端板厚度对PEC柱与型钢梁连接框架延性的影响  

The end plate thickness influence on ductility of the PEC column and steel beam connection framework

作　　者：赵根田[1] 王达[1] ZHAO Gentian WANG Da(School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010

出　　处：《四川建筑科学研究》2017年第1期8-11,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(51268042)

摘　　要：为研究端板厚度对框架耗能及延性的影响,对2榀PEC柱与型钢梁端板连接框架进行了低周反复荷载试验,在分析试验数据的基础上进行了有限元模拟。试验结果表明,端板厚度从12 mm增加到20 mm,框架极限承载力变化不大,滞回环面积增加了12.90%,延性系数提高了14.77%,两个试件的延性系数均大于3,说明此类框架具有良好的延性。有限元分析结果与试验结果基本相同,增加端板厚度可以改善框架的耗能能力和延性性能。In order to study the effect of the end plate thickness to energy dissipation and ductility of the frame, two PEC column-steel beam frames connected by end plate were designed and tested under low frequency cyclic load. Finite element analysis was carried out based on the results of experimental data. The test results show that with the thickness of end plate the increasing from 12 mm to 20 mm, the ultimate bearing capacity does not change, but the hysteresis loop area increases 12. 90% and the ductility increases 14. 77%. The ductility coefficients of the two specimens are both greater than 3, which prove the ductility of PEC column-steel beam frame connected by end plate is good. The finite element analysis results are basically the same as the experimental results, the energy dissipation capacity and ductility of the frame can be improved by increasing the thickness of the end plate.

关 键 词：端板连接 部分包裹混凝土柱 框架 延性 

分 类 号：TU398.9[建筑科学—结构工程]