Precast RC Blocks with Connections Composed of Steel Shear Keys and CFRP Sheets for the Superstructure of Temporary Bridges in a Postdisaster Situation

被引：1

作者：

Ishibashi, Hiroki ^{[1
]}

Akiyama, Mitsuyoshi ^{[2
]}

Fujiwara, Masanori ^{[2
]}

Uno, Yoshiki ^{[3
]}

Hiromitsu, Taro ^{[3
]}

机构：

[1] Nihon Univ, Dept Civil Engn, Coll Engn, 1 Nakagawara, Koriyama, Fukushima 9638642, Japan

[2] Waseda Univ, Dept Civil & Environm Engn, 3-4-1,Okubo,Shinjuku Ku, Tokyo 1698555, Japan

[3] Sato Kogyo Co Ltd, 14-10 Morinosatoaoyama, Atsugi, Kanagawa 2430123, Japan

来源：

JOURNAL OF BRIDGE ENGINEERING | 2022年 / 27卷 / 08期

关键词：

Temporary bridge; Accelerated bridge construction; Resilience; Precast; Shear key; Carbon fiber reinforced polymer sheet; STRESS-SLIP MODEL; BOND BEHAVIOR; CONCRETE; CONSTRUCTION;

D O I：

10.1061/(ASCE)BE.1943-5592.0001907

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Many bridges would be washed away due to giant tsunamis caused by the anticipated Nankai Trough earthquake. The accelerated bridge construction (ABC) concept should be applied to temporary bridge construction to save on-site construction time and help roads reopen immediately after the event. In this paper, a temporary bridge using precast reinforced concrete (RC) blocks with connections composed of steel shear keys and carbon fiber-reinforced polymer (CFRP) sheets is proposed. The proposed bridge facilitates rapid recovery from natural disasters and accordingly enhances disaster resilience. Bending and shear tests are conducted to investigate the effects of the proposed connection on the structural performance of beams. The experimental results indicate that the connection with an adequate CFRP sheet length provides sufficient flexural capacity for temporary bridges and does not negatively affect the shear capacity. Moreover, a 3D finite-element (FE) model is applied to simulate the bending tests. The FE model provides good agreement with the experimental results and can be applied to design the structural details of full-scale RC blocks.

引用

页数：14