4.7 Article

Experimental study on skew inverted-T bent caps with minimum traditional and skew transverse reinforcing

期刊

ENGINEERING STRUCTURES
卷 230, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2020.111653

关键词

inverted-T bridge cap; Skewed bridge; Shear reinforcement; Failure mechanisms; Shear failure; Torsion failure

资金

  1. Texas Department of Transportation (TxDOT) [0-6905]

向作者/读者索取更多资源

This study investigates the shear behavior of six full-scale Inverted-T Bent Caps (ITBC) specimens with different skew angles, comparing traditional and uniform skewed reinforcement design. The research explores the impact of skew angle and rebar arrangement on structural performance, providing insights into the design and construction of skewed reinforcing in ITBCs.
In this paper, the shear behavior of six full-scale Inverted-T Bent Caps (ITBC) specimens with skew angles of 30 degrees, 45 degrees, and 60 degrees are reported to study the effect of skew angle and rebar arrangement on structural performance. The transverse reinforcement in skewed ITBCs is designed as per the traditional methods the TxDOT Bridge Design Manual LRFD, which conform to the AASHTO LRFD Bridge Design Specifications. The traditional design of flaring the transverse rebar in skew ITBCs brings notable difficulty in manufacturing. An alternative way is to apply uniform skewed reinforcing, which is compared to traditional design in this research. The minimum ratio of transverse reinforcement required by AASHTO LRFD specifications was adopted in this research to investigate the most unfavorable design. The load-displacement curves, the internal force diagrams, the strength and displacement capacity, and the strain measuring results are reported in detail. The specimens with a skew angle of 30 degrees or 45 degrees fail in shear-critical mode, while the specimens with a skew angle of 60 degrees fail in torsion-critical mode. The experimental results show that replacing the traditional reinforcement with the skew reinforcement does not reduce the capacity of ITBCs. The cracking behavior of ITBCs with skew rebar are better than the ITBCs with traditional rebar. Based on the extensive experimental study on ITBCs, general design guidelines for the design and construction of the skewed reinforcing in ITBCs are provided.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据