第38卷第5期 2016年10月
土木建筑与环境工程
Journal of Civil,Architectural &.Environmental Engineering
doi:10. 11835/j.issn. 1674-4764. 2016. 05. 005
Vol. 38 No. 5 Oct.2016
GFRP肋式剪力连接件受力性能对比试验研究
黄海林，李邀，祝明桥，郭原草，曾垂军（湖南科技大学土木工程学院，湖南湘潭411201）
摘要：剪力连接件是保证GFRP混凝土组合梁/板中两种不同材料共同工作的重要构造，设计了矩形肋和T形肋两类GFRP肋式剪力连接件，进行了3组共8个GFRP肋式剪力连接件的推出试验，包括：矩形肋开孔、T形肋开孔、T形肋不开孔3组GFRP肋式剪力连接件，得到了其破坏形态、极限承载力、荷载一滑移曲线及荷载一应变变化规律，重点研究肋内开孔及肋的截面形式对GFRP肋
裂破坏；对比矩形肋开孔试件，T形肋开孔试件强度高、延性好；对比T形肋不开孔试件，T形肋开孔试件强度与延性均能提高。基于试验结果，建立了考虑肋内开孔及肋截面形式影响的GFRP肋式剪力连接件极限承载力计算公式，拟合得到了GFRP肋式剪力连接件的荷载一滑移曲线上升段的理论模型，建立了其抗剪刚度计算公式。
关键词：组合结构；肋式剪力连接件；推出试验；破坏机理；粘结滑移
中图分类号：U443；TU398
文章编号：1674-4764(2016)05-0034-09
文献标志码：A
Comparative analysis of push-out tests for two kinds
ofGFRPshearconnectors
Huang Hailin,Li Ao,Zhu Mingqiao,Guo Yuancao,Zeng Chuijun
(College of Civil Engineering , Hunan University of Science and Technology, Xiangtan 411201,Huan,P. R. China)
Abstract: Shear connectors are the important detailings affecting the mechanical properties of GFRP concrete composite beams/decks. Rectangular rib and T-type rib GFRP shear connectors are put forward to improve the interfacial bond properties between GFRP and concrete. Eight push-out tests are conducted to evaluate the mechanical behaviors of two rectangular perforated rib GFRP shear connectors and three T-type perforated rib GFRP shear connectors, as well as three T-type rib GFRP shear connectors. The failure patterns, ultimate bearing capacities, load-slip behaviors and load-strain regularities are obtained by contrast tests. Results show that T-type perforated rib GFRP shear connectors show higher strength and better ductility than rectangular perforated rib GFRP shear connectors, and T-type perforated rib GFRP shear connectors show higher strength and better ductility than T-type rib GFRP shear connectors. An empirical equation to predict the ultimate shear resistance is proposed and validated by the experimental
收稿日期：2015-12-02
基金项目：国家自然科学基金（51308207、51378202）；湖南省教育厅项目（14C0439）
作者简介：黄海林（1984-），男，博士，主要从事组合结构及新材料应用研究，（E-mail)hhlvsgenius163.com。 Received:2015-12-02
Foundation item:National Natural Science Foundation of China(No. 51308207, No. 51378202); Project of Hunan Province
Education Office (No. 14C0439).
Author brief: Huang Hailin(1984-), PhD, main research interests: composite structure and application of new materials,
万方数据-mail>hhlvsgenius@163.com.