（1 西南交通大学土木工程学院， 成都 610031； 2 重庆交通大学土木建筑学院，重庆 400074）

［摘要］针对混凝土结构中局部区域拉应力过大的问题，提出了一种能有效提高抗裂性能和阻止裂缝发展的带肋钢板-混凝土组合构件（RSPC），试验设计制作了5片带肋钢板-混凝土组合构件（RSPC）、1片普通混凝土构件（RC）及1片常规粘贴钢板混凝土构件（RCS）。试验结果表明：带肋钢板-混凝土组合构件抗裂性能较普通钢筋混凝土构件和常规粘贴钢板混凝土构件大得多，梁下缘混凝土的极限拉应变较普通钢筋混凝土大得多。根据普通钢筋混凝土受弯构件的抗裂弯矩的计算原理，提出带肋钢板混凝土组合构件的抗裂弯矩计算公式。

［关键词］桥梁工程; 抗裂; 试验研究; 带肋钢板-混凝土组合构件; 增强机理

中图分类号：U441，TU398       文献标识码：A       文章编号：1002-848X(2014)09-0029-05

Experimental study on the cracking resistance performance of ribbed steel plate-concrete composite components

Xu Yong1,2, Zhou Zhixiang2

 (1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2 School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, China)

Abstract: Considering oversized tensile stress in the partial region of the concrete structure, a ribbed steel plate-concrete composite component (RSPC) was proposed to improve crack resistance capacity and limit crack development. Five ribbed steel plate-concrete composite components(RSPC), one normal reinforced concrete component (RC) and one epoxy-bonded steel plate-concrete component (RCS) were made in test. The test results indicate that the cracking load for the RSPC is higher than the RC and the RCS. The ultimate tensile strain of the bottom of the RSPC is higher than the RC. The calculation formula of crack resistance moment of the RSPC was proposed according to the calculation principle of crack resistance moment capacity of the RC flexural members.

Keywords: bridge engineering; crack resistance; experimental study; ribbed steel plate-concrete composite component; reinforcement mechanism

*国家自然科学基金资助项目（51078373），交通部西部交通建设科技项目（20113188141480），重庆市科委科技项目（cstc2012gg-yyjs30001）。

作者简介：徐勇，博士，副教授，Email: xuyong6266@163.com。

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