钢—HSSFC中PBL剪力键力学试验研究  

Experiment Study on Mechanical Behavior of Perfobond Shear Connectors in Steel-HSSFC Composite Structure

作　　者：王序 端茂军[1] 魏洋[1] 李国芬[1] 周晓栋 张世宇 WANG Xu;DUAN Maojun;WEI Yang;LI Guofen;ZHOU Xiaodong;ZHANG Shiyu(College of Civil Engineering,Nanjing Forestry University,Nanjing,Jiangsu 210037,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《公路工程》2018年第6期6-10,77,共6页Highway Engineering

基　　金：国家自然科学基金(51208262);江苏省自然科学基金(BK20151520);江苏高校优势学科建设工程资助项目(PAPD);江苏高校品牌专业建设工程项目(PPZY2015A063)

摘　　要：为研究钢-HSSFC (High Strength Steel Fiber Concrete,高强钢纤维混凝土)组合结构中PBL剪力键的力学性能,共设计制作了4组12个试件,并进行推出试验,研究其破坏形态、荷载-滑移曲线,分析破坏机理。试验结果表明:采用HSSFC的PBL剪力键具有更高的极限承载力、延性、抗剪刚度和裂缝抑制能力。最后基于本试验提出的极限承载力计算公式物理意义明确,与试验结果吻合良好,可以指导钢-HSSFC组合结构下PBL剪力键的设计。A test was carried to investigate the properties of PBL connectors in steel-HSSFC(High Strength Steel Fiber Concrete)composite structure.12 specimens were sorted into 4 groups and they were designed and fabricated.According to the experimental results,the load slip curves were obtained,the failure modes and failure mechanisms were described.The results show that PBL connector with HSSFC has higher ultimate bearing capacity,ductility and shear stiffness,it also can inhibit the expansion of cracks and delay the occurrence of cracks.The calculation formula of bearing capacity based on the experiment has the clear physical meaning,and it is in good agreement with the test results.Also,it can guide the design of PBL shear key in steel-HSSFC composite structure.

关 键 词：HSSFC PBL剪力键 破坏机理 荷载-滑移 极限承载力计算公式 

分 类 号：TU398.9[建筑科学—结构工程]