2 0 0 0 OA CLT 床版を用いた小規模橋梁の補修設計と施工
- 著者
- 豊田 淳 佐々木 貴信 荒木 昇吾 林 知行 有山 裕亮 後藤 文彦
- 出版者
- 公益社団法人 土木学会
- 雑誌
- 構造工学論文集 A (ISSN:1881820X)
- 巻号頁・発行日
- vol.65A, pp.799-806, 2019-03-15 (Released:2020-01-27)
- 参考文献数
- 14
Cross laminated timber (CLT) is a new type of engineered wood panel consist of several layers of structural lumber boards stacked crosswise at 90° angles and glued together on their faces. It is possible to produce CLT panels of 3 m wide, 12 m long, and 270 mm thick. CLT is light-weight material which the unit weight of CLT made of Japanese cedar is about 1/6 of reinforced concrete, therefore it's has advantage in terms of the transport and construction works. The authors consider using CLT elements for bridge deck replacement instead of a concrete deck slab. The overview of the design and construction of the bridge deck replacement of an existing bridge using CLT srlabs is reported herein.
1 0 0 0 OA プレストレスト木・コンクリート合成桁橋における新橋梁形式の提案
- 著者
- 荒木 昇吾
- 出版者
- 公益社団法人 土木学会
- 雑誌
- 構造工学論文集 A (ISSN:1881820X)
- 巻号頁・発行日
- vol.57A, pp.890-899, 2011 (Released:2011-08-01)
Durability of timber bridges is improved by using concrete decks, because it substitutes a roof. In this case, dead load is increased but this disadvantageous point is canceled by making the timber-concrete composite girder. In Japan, Design Criteria for this type of timber bridges have been developed in 2002 at Nagano Prefecture. And this bridge had been constructed for the first in 2003. In this paper, the improvement method for this type of timber bridge is suggested, that is to product a composition precast girder that has T-beam cross section with the web made of timber and the upper flange made of concrete. And the advantage is discussed from the viewpoints of cost reduction and labor saving.