著者

平山 育男

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.83, no.743, pp.113-119, 2018 (Released:2018-01-30)

参考文献数

3

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This article examined about the Osaka Post and Telegraphic office completed in December, 1892. It is following points to become clear. The report of "Kentiku Zassi" 77 by Nakajima Senjirou recorded the Osaka Post and Telegraph Office main building with 2 stories, but "NOTES" by J. Condor reported main building 4 corner with 3 stories. The plane dimensions, main dimensions of the vertical plane and wall-thickness are equal to the new report written down by Nakajima Senjirou in the drawing placed in "Kentiku Zassi" 77 are equal. 4 corners of the Osaka Post and Telegraphic office Main Building were designed to 3 stories tower, at first by Satati Senjirou, and this plan was shown in "AN ARCHITECT'S NOTES ON THE GREAT EARTHQUAKE OF OCTOBER, 1891." by J. Condor. After the Nobi earthquake, the office was changed to 2 stories by Nakajima Senjirou, and the building which was finally designed was placed in "Kentiku Zassi" 77 as a "new report" and drawings. At the time of the Nobi earthquake, in the Osaka Post and Telegraph Office, the completion was already imminent. The main building was not seen in the damage point for the Nobi earthquake. So, this building did not make a change to plane constitution, a basic vertical plane, wall-thickness after the Nobi earthquake, and the third floor part of 4 corners of the main building were changed on the second floor. "Sintiku-Houkoku" of Nakajima Senjirou wrote down the start of work day of the Osaka Post and Telegraph Office with November 4, 1890, however it was open bill day of the construction contract bid on that day. The cement was not used for the seam materials of the brick before the Nobi earthquake by the construction of the Osaka Post and Telegraph Office, but cement was used in the construction after the earthquake.

著者

小野 芳朗

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.76, no.659, pp.67-74, 2011-01-30 (Released:2011-03-07)

参考文献数

17

被引用文献数

1 1

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After the Meiji-era, the forest around Shin-to shrine was refined as Shin-en (The forest for God) in order to keep shrine's authority. This Shin-en had also function as the Urban Park. This paper discusses an example of building of a shrine and a park in Okayama City. The Shokon-sha shrine (the Shin-to shrine dedicated the sprits of war dead soldiers) was built in 1869 on a hill Higashi-yama where the shrine dedicated Tokugawa Shogun from 1644 that was the most important memorial space for the governor Daimyo Ikeda. After the stationing of Army 17 division in 1907, the Shokon-sha shrine was rebuilt with the refined Shin-en Parks designed by the technocrat belong to Ministry of Imperial House as the authority for the sprit of soldiers of Imperial Army.

著者

酒谷 粋将

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.85, no.774, pp.1661-1671, 2020 (Released:2020-08-30)

参考文献数

12

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The aim in this paper is to clarify how each subject views the design target, what kind of frame difference is created there and how the difference affect their design process and the final design proposal in the process of design by dialogue between two design subjects. We first conducted a design experiment for architectural design practitioners and analyzed the design process. We took up the design process of one team, which was expected to have a very different way of understanding the design target despite having formed agreements on the design content between the members. Through the analysis of the team’s design process, we clarified what meaning and value was created in the team's design proposal and pointed out how the dialogue between design subjects under different frames affects the design process and the design target. The contents are shown below.  1) Denotation and connotation of design ideas It was confirmed that there was a large difference between designers in the frame recognizing the design target. Therefore, the content of the ideas related to the design target was roughly classified into denotation and connotation.  2) Categorized ideas and relationships between designers We analyzed the contents of their design based on the classification of ideas, denotation and connotation and the relationship between the designers who generated the design ideas. The result is that the difference in the way of thinking of design target causes each designer to play a different role, leading to the development of design thinking through more active dialogue between designers.  3) Overlapping conflicting meanings and values There are sometimes various contradictions in the various meanings and values given to the design target. However, the intent of each design based on the evaluation axis of each designer leads to the process of constructing polysemy of design target which contains the value from multiple perspectives.

著者

中島 章博 上野 佳奈子 坂本 慎一 橘 秀樹

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.73, no.626, pp.415-422, 2008-04-30 (Released:2008-08-20)

参考文献数

13

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In Japan, “open-plan” type classroom is becoming popular in elementary schools. Although this planning has various merits for educational activities, sound propagation between adjacent classrooms tends to be a serious acoustical problem. In this study,therefore, the sound propagation between closely located two classrooms connected by an open-space was investigated by numerical simulation using FDTD method. In the simulation, two classrooms and the open-space connecting them were modeled and the configuration of the rooms and sound absorption treatment on the room boundaries were examined. As a result, it has been found that sound absorption treatment on the ceiling and architectural/acoustic treatment for the wall of the open-space which makes mirror-reflection are effective to mitigate the sound propagation between the classrooms.

著者

川島 智生

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.63, no.514, pp.207-215, 1998-12-30 (Released:2017-02-02)

参考文献数

54

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By the study some knowledge was acquired as follows. 1. Sixty-six municipal elementary schools were built of reinforced-concrete in Kobe between 1920 and 1939. At 1923, the Architectural Section was founded in Kobe Municipal Office and placed in charge of its design. 2. The building of those schools resulted from not only the abolition of school district system at 1919, but also a promotion of a memeber of municipal assembly. 3. In elementary schools in Kobe-city, the size of classrooms, the span of columns and the height of story were standardized. 4. Characteristics in Kobe schools were mentioned as follows, an auditorium on the 3rd floor, double-loaded corridor type under the 2nd floor. 5. At first the design was influenced under that of wooden schools but new patterns were created one after another and settled at last.

著者

中嶋 友美 山口 健太郎

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.85, no.768, pp.253-263, 2020 (Released:2020-02-28)

参考文献数

8

被引用文献数

1

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Background In Japan, which is becoming a high-mortality society in addition to a super-aging society, the establishment of a suitable residence for older people to spend their last days is an urgent concern. In a home type hospice, which is a residence wherein home care services are provided and covered under nursing insurance, 5-6 individuals live together. Although home type hospices are expected to play an important role in the future as one of the residential options for patients to spend the terminal stage of their life, no study has assessed the actual living conditions and physical characteristics of home type hospices. Reserch Objectives By understanding the actual environment, such as resident attributes and nursing care provision system, this study aimed to clarify the characteristics of home hospices, which primarily utilize existing residences. Research Methods The target residences were 28 business establishments and 37 buildings in Japan, which were certified by the Japan Home Hospice Association. Surveys were conducted through interviews with the administrator of each business establishment. Conclusion 1. There are age limitations for moving elderly people to facilities and residences providing home care services. However, home type hospices accept residents regardless of their age. While the majority of the residents are aged >80 years, there are some residents aged <60 years. 2. If we assess the reason and duration of occupancy of such facilities on the basis of disease type, cancer-centric home type hospices mostly accept patients in need of medical care, and most residents remain in the facility for a short duration, usually <1 year. These facilities provide hospice care for patients in the terminal stage of their life. Dementia-centric home hospices support patients with severe dementia. It is believed that these houses complement the insufficiency of facilities in different regions and the variety in the levels of care that is provided. Complex home hospices mostly accept patients in need of medical care and who could not live at their own residence. Thus, home hospices may accept residents regardless of the patient’s age and disease type, including older people and those with malignant diseases, respectively. In addition, these facilities function as a safety net for patients with severe conditions, who are difficult to deal with in the existing system . 3. Apart from home type hospices, there were 25 business establishments that were serving as home-visit nursing agencies, accounting for approximately 90% of the surveyed facilities. Cooperation between resident staff, which is responsible for providing daily living support, and home-visit nursing agencies is necessary to provide continuous support before moving patients. Therefore, in many cases, home-visit nursing was provided in the business establishments. 4. Renovation of buildings could be classified into four types, namely “improvement in building performance, ” “improvement in accessibility, ” “space expansion, ” and “barrier-free design.” Increase in the number of bathrooms/washrooms and toilets as well as renovation to accommodate wheelchairs were the most common. To utilize existing buildings as home type hospices, emphasis should be particularly given to the barrier-free design of plumbing fixtures. 5. Introduction through acquaintances was the most common method of property selection. It tended to reflect a higher level of connection and recognition with the local residents. This must be because of the owner’s connection with the region, which is shared with the new property owner.

著者

奥村 俊道 勝又 英明

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.83, no.745, pp.525-534, 2018 (Released:2018-03-30)

参考文献数

2

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This paper is a study based on surveys conducted for Tokujin-do at Koishikawa Korakuen Garden, a site designated as a Special Historic Site and a Place of Special Scenic Beauty, located in Bunkyo Ward in Tokyo. Tokujin-do was reroofed and partially repaired from December 2012 to March 2014 during which time traces and marks left in the building were examined and historical materials were analysed. A separate study discusses Tokujin-do from a historical point of view while also investigating the changes made to the alcove and the images which it enshrined. However, previous studies which focus mainly on the early modern period have not examined changes that occurred thereafter. Furthermore, there is no reference to an architectural examination of the building other than its alcove. Since the latest surveys conducted for the building have revealed that parts of the roof and some of the fixtures had been renovated during and after the late modern period, this study will analyse the survey results and summarize the changes made to Tokujin-do from its construction to the present. Based on this study, the changes made to Tokujin-do can be summarized as follows. (1) Tokujin-do was constructed during the period of 1665 and 1669 (Kanbun 5-9) to enshrine the images of Tai Bo, Boyi and Shuqi. It is possible that vegetal materials were used for the roof covering. (2) During the period of 1700 and 1702 (Genroku 13-15), the building changed its name firstly to Koshi-do, then to Shaka-do. Tile roofing was used at this point. (3) After 1718 (Kyoho 3), the name was changed to Hachiman-do and the alcove was made smaller. This was also when the images of Tai Bo, Boyi and Shuqi were transferred to a different place. (4) In 1820 (Bunsei 3), when the building was renamed Tokujin-do once again, the frontage of the alcove was widened to hold the newly created images of Boyi and Shuqi. Thereafter, the building and images were partially repaired during the Edo period. (5) During the first half of the Meiji period (1868-1887), extensive repair works took place, which involved the dismantling of the roof truss, frame and its surroundings as well as the floor face. The roof covering was made with shingles. (6) From then on until this day, the building has been repeatedly reroofed using different roofing material such as iron sheets and copper sheets. This study examines Tokujin-do from historical sources as well as from surveys and an analysis of the building itself. The findings from the paper will not only help explain the importance of Tokujin-do in relation to Confucianism architecture, but should also contribute to further studies of garden design history as well as in the fields of politics, philosophy and religion.

著者

稲益 祐太

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.82, no.741, pp.3023-3030, 2017 (Released:2017-11-30)

参考文献数

32

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From the middle ages, Tavoliere plain in Apulia Region was the center of the wool industrial and customs for the sheep farming was placed. Sheeps had moved looking for grass from the settlements of Apennnes during for winter. Tavoliere plain was a grain-growing district in Italy. A peculiarity of agriculture in southern Italy were land-use of extensive agriculture and an existence of a large land owner. The purpose of this study is to clarify the spatial structure of Tavoliere plain where grazing and cultivation coexisted in pre-modern times. In this paper, we look at the atlas of the pasture land in detail, and analyze the spatial structure while comparing it with the statistics and drawings of farmland. In this plain, the sheep tracks and pasture lands for migration were developed by the kingdom of Naples. Three kinds of sheep tracks are decided, the thickest roads extended from the mountains to Foggia. The narrow roads were stretched in Tavoliere plain to move to the assigned pasture land. The grazing area set in 23 blocks was about 15,400 carri (3802.5 km2) in total, of which about 8930 carri (2,205 km2) was pasture. Other than that it was crop cultivated land, vineyard, vegetable field and pasture ground for dairy animals etc. In the atlas “Atlante delle locazioni del Tavoliere di Puglia di Antonio e Nunzio di Michele di Rovere” (1686), roads for movement of sheep, lodging with livestock houses (posta), large-scale farmers (masseria) and dairy pastures (mezzana) ware drawn, but crop cultivation (portata) was hardly drawn. Compared with the drawing of the individual cultivated land, it turns out that there was also rotatable cultivated land in fact. On the other hand, there were few settlements in the plains, many in the surrounding hills. And around the village there were subdivided vegetable fields and fruit tree plantations. In conclusion, there were not only grazing lands for sheeps and posta in Tavoliere plain, fragmented land use including cereal crop rotation cultivated lands, pasture grounds for domestic animals, vegetable gardens and fruit tree plantations were done. And it was the movement of people and sheep from other areas that supported the development of the large-scale farm in the plain and the wool industry in southern Italy.

著者

太記 祐一

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.64, no.523, pp.301-306, 1999-09-30 (Released:2017-02-03)

参考文献数

73

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The palace of Bonos was founded by Romanes I Lekapenos as his summer residence. This palace is now lost to us and the information on it were delivered only through literary sources. This study re-examines the literary sources and tries to find out the characteristic features of the palace. In this palace, the courtyard or 'Aule' was used as the ceremonial space, and the palace church (St. Constantine) was facing the 'Aule'. Therefore the courtyard or 'Aule' might be the functional core of this palace. And the situation of the palace, on the north slope of 'the fourth Hill' in Constantinople, is ideal for a summer residence.

著者

馬渕 浩一 堀越 哲美

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.69, no.578, pp.41-48, 2004-04-30 (Released:2017-02-09)

参考文献数

66

被引用文献数

1 1

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The aim of this study is to provide some suggestion on the establishment of Nagoya Municipal Science Museum (NMSM). The result of the analysis are as follows: 1)NMSM was established by Nagoya City as a first public museum of science and industry in Japan after the World War II, being introduced the concept of German Museum in Munich. 2) Dr. Shimizu, the president of Nagoya Institute of Technology and the former director of Education Ministry, designed the exhibition of NMSM to encourage the practical science and technology education for visitors. His plan was supported by both local private sectors and universities.

著者

ダニアル アフマッド 飛ヶ谷 潤一郎

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.86, no.787, pp.2358-2367, 2021-09-30 (Released:2021-09-30)

参考文献数

25

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This study attempts to figure-out the characteristics of suggestive artificially intelligent architecture by case-studying the cybernetic projects and relevant theoretical discourse presented by Japanese architects Kenzo Tange and Arata Isozaki during the decade of the 1960s. First, the reason behind selecting Tange for this study is the fact that being inspired by the technological optimism of the 1960s, he presented an elaborate theoretical discourse on information and communications society and also attempted to portray this element as a significant design characteristic in the form of a central civic axis for the processing of information and communications in his projects A Plan for Tokyo (1960-61), Tsukiji Project in Tokyo (1963), Yamanashi Communications Center (1964-67), Plan for Skopje (1965) and Japan World Exposition Osaka (1967-70). This information and communications discourse led him to explore the characteristics of cybernetic environments such as tactual, auditory and visual approaches by following Norbert Wiener’s line of thought. Afterwards, he approached suggestive artificially intelligent architecture and attempted to define it through human, emotional, sensual, and technologically intelligent elements and social-communicational structure of the space. Secondly, the reason behind the selection of Isozaki is the fact that he – following in the footsteps of Tange but adopting an approach featuring arts, technology and architecture – experimented with cybernetic environments while following Norbert Wiener as his ideal in the projects of Electric Labyrinth: 14th Triennale Di Milano, Milan, Italy (1968), Arai House (1968-69), Computer Aided City, Makuhari, Chiba (1970-72) and Osaka Expo ’70 (1967-70). Computer Aided City is of particular significance as he introduced the concept of a brain of the city through this project that eliminated all the discrimination among the functions of a city hall, hospital, school, art museum, etc. and controlled the city via artificially intelligent information processing system – a concept being implemented these days through artificial intelligence. He also presented the characteristics of suggestive artificially intelligent environment as enclosed in a protective membrane, possessing interchangeable spaces, movable equipment, enjoying a man-machine symbiosis and handling a self-instructing feedback loop. Finally, both architects realized their dreams of suggestive artificially intelligent environment in the Festival Plaza of the Osaka Expo ’70. Especially Isozaki being inspired by NASA’s space missions and science-fiction based movies of the 1960s, attempted to control the entire environment via artificially intelligent brain of the Expo ’70 – that is the main control room.

著者

柴田 晃宏 増留 麻紀子 朴 光賢

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.87, no.797, pp.1141-1152, 2022-07-01 (Released:2022-07-01)

参考文献数

14

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This study aims to clarify the morphological representation of the sloping roof of contemporary architectures that were published in Japanese architectural magazine “A+U” that publishes articles on world architecture. The rooftop view and section figures were analyzed based on convexoconcave, straight or curved, breakpoints, and symmetry. Subsequently, the section figures were analyzed based on their deformation, the grounding angle, finishing material of their walls or roofs and the presence or absence of eaves. Consequently, 33 types of slant roof designs and 6 combination patterns in contemporary architectures were defined by the relationship of the roof surface figures.

著者

鈴木 千里

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.71, no.599, pp.165-172, 2006-01-30 (Released:2017-02-17)

参考文献数

3

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Department of Social Welfare in Ministry of Health and Welfare organized the Housing Corporation in 1941. Just before it, the department held a conference and made 'the designing standards for housing and its surroundings.' Until now we have considered the house types of the designing standards to be lacking relationship with family members. This study reviews the plans for designing standards in the conference, and clarifies that they were planned based on family members and uses of rooms while asleep and made to determine the designing standards.

著者

足立 壮太 大月 敏雄 谷口 尚弘 安武 敦子 橋本 泰作

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.86, no.788, pp.2410-2421, 2021-10-30 (Released:2021-10-30)

参考文献数

37

被引用文献数

1

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Coal-producing areas experienced declines ahead of the rest of the country. We believe that clarifying transformation patterns of those areas will provide knowledge that will contribute to the planning of residential areas in the shrinking society. However, to understand the shrinkage process, it is necessary to understand the peculiarities of the formation mechanism of coal mining settlements. Therefore, this study aimed to reveal the construction process of coal mining company housing in the Mitsui Miike Coal Mine which is a representative example. The methodology is as follows. we studied the construction process of coal mining company housing by the historical records of Miike Mining and Miike Port Office, Company Housing Registry (Shataku Daichō), the information of architectural approval applications, documents of Teruo Takematsu, data of the applications for building confirmation, and Company Housing Plan of Miike Mining. Second, we divide the construction process of coal mining company housing into periods based on the social condition, and developments of the coal mining industry and coal mining company housing areas. Third, we plotted the construction process of coal mine company housing on the map for each period category. Through this study, we made the following things clear; 1) In Mitsui Miike Mine, the construction of coal mining company housing can be divided into nine periods: Phase 1 (1889-1902): the founding period, Phase 2.1-2.1 (1903-1924): the southwest move period, Phase 3 (1925-1935): the stagnation period, Phase 4 (1936-1944): the construction promotion period (the wartime regime), Period 5 (1946-1948): the construction promotion period (the postwar reconstruction), Phase 6 (1950-1958): the intermediate period between increased production and decline, and Phase 7 (1961-1997): the decline period. 2)In Phase 1, construction activities were taken place near the mine shafts near the outcrop. In Phase 2.1, construction activities moved to the south with the mine shaft development (coal mining company houses for officers were built near the office and the port). In Phase 2.2, construction activities of coal mine company housing for miners moved to the southwest with the mine shaft development. In Phase 3, construction activities moved to the west even under the recession. In Phase 4.1, construction activities of coal mine company houses for miners began to be observed in the east and west regardless of the mine shafts' location. In Phase 4.2, coal mining company houses were built in the east and west regardless of the location of mine shafts. In Phase 5, construction activities were carried out over a wide area from east to west, regardless of the mine shaft's location. In Phase 6, construction activities were carried out over a wide area from east to west. In Phase 7, construction activities were concentrated in the western part near the mine shafts. In the company housing plan, the policy was to maintain the coal mine company houses in the northwest near the mine shafts. From the above, we can infer that we can classify the formation process of coal mining settlements into (1) the modernization process, in which coal mining settlements move along the geological structure, (2) the production increase process, in which coal mining settlements expand under the influence of social conditions and national policy, and (3) the decline process, in which coal mining settlements shrink again along with the geological structure.

著者

辛 殷美 讃岐 将嗣 青木 ゆい 藤田 香織

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.80, no.711, pp.757-766, 2015 (Released:2015-06-24)

参考文献数

22

被引用文献数

3 3

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This study aims to clarify the structural performance of two typical Japanese traditional timber joints used in Kenchoji-temple in Kamakura, Japan. The frame consisting of column and penetrating beam is one of the most important structural elements of traditional wooden structures. More often, there is a connecting joint of the beam, which penetrates through the column. Therefore the shape of the joint is hidden inside the column, not visibly apparent. For this reason, we operated X-ray inspection of the column and penetrating beam, on-site. Through this result we were able to estimate the shape of joint. Bending test of the joint was performed on models of the joints. The results of the bending tests of the connecting joints were compared with those without connecting joint inside the column. Consequently, it was possible to understand the difference between the strength of the each joint by the above results.

著者

丸山 俊明 日向 進

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.65, no.535, pp.223-230, 2000-09-30 (Released:2017-02-03)

参考文献数

47

被引用文献数

3 3

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This study aims to clarify the building regulations in agricultural district of Yamashiro province through the Edo period. In Yamashiro province, official notices by Kyoto machibugyosho (magistrate's office) obligated every farmers to present the application forms for building up to Kyoto machibugyosho till 1767. But, in south Yamashiro province, there are some documents prove the existence of buildingregulations by Kyoto daikansho (regional office of administrative official) or Jito (manner's lord ) till the late 1730's. This paper takes up them.

著者

岡本 肇 田中 享二

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.76, no.667, pp.1569-1576, 2011-09-30 (Released:2012-01-13)

参考文献数

10

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This paper reports the evaluation method of the waterproofing system for underground structure applied on earth retaining walls prior to concrete casting. The most important part for evaluating waterproofing properties of this system is a penetrated part through waterproofing, or a damaged part of waterproofing. For the penetrated part, the specimen of this system should be made of concrete casting vertically. For the damaged part, the specimen should be made of concrete using tall frame and casting vertically, or using small frame and rotating to accelerate bleeding. Then waterproofing property of this system is evaluated by pressurizing permeability test.

著者

小槻 祥江 磯田 和彦 清成 心 半澤 徹也

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.86, no.786, pp.1156-1167, 2021-08-30 (Released:2021-08-30)

参考文献数

14

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It has been reported that the vibration generated in a live hall located in an urban area during a live performance causes unpleasant vibration to surrounding buildings. This is because the vertical motion performed by a large number of audiences in accordance with a song and music. This vertical motion works as an excitation force to generate vibration and the vibration propagates to surrounding buildings through the ground. As a countermeasure against this vibration problem, we have developed a vibration-proof floor system using inertial mass devices. The feature of this vibration-proof floor system is that the forces of the spring supporting the floor and the inertial mass device arranged in parallel with the spring cancel each other out in opposite phases. Due to this feature, the force transmitted to the ground within a certain frequency range can be greatly reduced. In this paper, first, we show the response characteristics of the vibration-proof floor system in the frequency domain. From this response characteristics, it is confirmed that this vibration-proof floor system is effective countermeasure for the vibration problem caused by vertical motion of audiences in a live hall. Next, an excitation test of the principle model of the vibration-proof floor system is reported. Four disc spring units support weight of the model and an inertial mass device composed of a ball screw and a rotational weight is arranged in parallel. In this test, the model was excited with a sinusoidal wave using an excitation device. As a result of this excitation test, it is confirmed that the expected response characteristics for sinusoidal excitation can be realized. In addition, since the disc spring units and the inertial mass device have a slight hysteresis, it is necessary to evaluate this hysteresis damping in order to determine the performance of the vibration-proof floor system. The vibration-proof floor system is installed in an actual live hall with standing seats of 1,600. The specifications of the hall, the device configuration and the design performance of the vibration-proof floor system are shown. An excitation test was conducted in which the vibration-proof floor was excited by vertical motion of 1025 people. In this test, the verticals motions to the tempo of 2.0, 2.5 and 3.0 Hz and free verticals motions to the actual song were performed. From the measurement value obtained by the test, the vibration-proof floor behavior at the time of vertical motion was almost as designed. The reaction force response magnification of the vibration-proof floor system applied to the actual hall during the excitation test is obtained through a simulation analysis of the test. In this analysis, the device characteristics are evaluated using bilinear model that expresses friction of devices. The excitation wave used in this analysis is created as a combination of a sinusoidal wave of excitation frequency and twice and three times frequency of that. As a result of this analysis, it was confirmed that the reaction force reduction effect of proposed vibration-proof system is higher than that of the vibration-proof floor without inertial mass device. Through this paper, it is proved that the proposed vibration-proof floor system is very effective for the vibration problem caused by vertical motion of audiences during live performance.

著者

岡辺 重雄

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.74, no.641, pp.1593-1602, 2009-07-30 (Released:2010-01-18)

参考文献数

40

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The Building Standard Law requires site corner-cutoff at each crossing when constructing a building with new road, while it doesn't require corner-cutoff if the site is located onto an existing road (i.e. Construction of a new road is not necessary). This paper reveals the historic reason of this double standard. Before World War II, the corner-cutoff rule for new roads was included in the building line guideline set by the central government, and the corner-cutoff rule for existing roads was included in the local government rules. After World War II, however, the new Building Standard Law was established, under which private citizens can apply for a road construction to the government, and two old corner-cutoff rules were abolished. In 1970, when the new road standards were established, the details about corner-cutoff for newly constructed roads was stipulated, but those about existing roads were left untouched.Then this paper studies following three thoughts on how to resolve this double standard: 1) the corner-cutoff rule should be regulated for all road, 2) necessity to unify regulatory criteria, 3) the exclusion of the corner-cut off rule is also necessary.

著者

東 実千代 新谷 恵 八木 成江 守屋 好文 疋田 洋子

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.67, no.552, pp.29-35, 2002-02-28 (Released:2017-02-04)

参考文献数

32

被引用文献数

3 2

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The purpose of this study is to accumulate long term field-measurement data of the concentration of formaldehyde(HCHO) and volatile organic compounds(VOCs) found in indoor air, and to investigate the behavior of these concentrations. In addition, we studied the lifestyle and any symptoms of the occupants. The duration of the field measurements was 1996-1999(HCHO) and 1996-1998(VOCs). The results showed that a higher concentration of HCHO was detected during the heat of the summer. decreasing as temperatures decreased. While each summer showed a fluctuation in these levels, over a four year period, there was an overall decline in the concentration. A high concentration of total volatile oreranic compounds (TVOC) was detected in newly constructed houses. All of the TVOC concentrations exceeded the interim target level and the VOCs components were influenced by the habits and lifestyles of the occupants. We did not find any association between the concentration of HCHO or the VOCs in the indoor air and the symptoms experienced by the occupants.