著者
田中 享二 田村 哲郎 宮内 博之
出版者
東京工業大学
雑誌
基盤研究(B)
巻号頁・発行日
2008

金属・メンブレン防水層の性能のひとつとして耐風性は重要である。この中で近年普及の著しい金属・メンブレン機械的固定工法では、防水層が部分的にしか下地に固定されていないため、台風時に破損する事故が多発している。この問題解決のために、強風時における防水層の挙動を、実大試験体を用いた風洞実験、台風時の屋外観測により調べ、鉛直吸い上げ力に加えて、大きな横力も発生していることを見出した。この知見をもとに防水層の耐風性評価試験装置を開発し、これら工法の耐風性評価を可能とした。
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

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
岡本 肇 田中 享二 小林 茂 山中 勇人 内海 孝康
出版者
一般社団法人 日本建築学会
雑誌
日本建築学会技術報告集 (ISSN:13419463)
巻号頁・発行日
vol.16, no.33, pp.435-440, 2010-06-20 (Released:2010-06-18)
参考文献数
2
被引用文献数
1 1

This paper is described about the failures of waterproofing membranes for underground structures applied on earth retaining walls prior to wall concreting. In this waterproofing system the quality of waterproofing work may become worse and failures increase because waterproofing membrane is applied to irregular surface of the earth retaining wall, waterproofing work is complicated with demolition work of earth retaining wall and concreting work. So it must be recognized the note of this system and needs to make standard of this system. Before standardizing, we researched the failures of this method and classified.
著者
市川 裕一 バルトコ ミハエル 加藤 信男 宮内 博之 佐々木 孝基 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.70, no.593, pp.17-24, 2005
参考文献数
8
被引用文献数
4 3

A waterproofing membrane is partially fixed to a substrate by fasteners in mechanically anchored systems. For designing a safer anchored waterproofing system against typhoons, it is needed to make clear the behavior of it under strong wind. Two kinds of full size specimens with a parapet and without one were exposed to high wind speed of a wind tunnel. The behavior of the system was investigated from the three aspects such as wind forces to a membrane, deformation of a membrane and tensile forces of fasteners induced by high wind. Strong wind force was observed in the area close to the windward edge for the roof without a parapet and about 1m on the leeward from a parapet for the roof with a parapet. The membrane was lifted up by wind to about 60mm in maximum height and was extended to about 0.6% in maximum elongation and it oscillated about 5-20Hz in periodic time. The tensile force of more than 160N was observed in some fasteners, depending on the location in the roof.