后张无粘结混合装配式框架静力弹塑性分析  

Pushover analysis of unboned post-tensioned hybrid precast concrete frame

作　　者：张晨[1,2] 徐勋倩 葛文璇 孟少平 ZHANG Chen;XU Xunqian;GE Wenxuan;MENG Shaoping(School of Xinglin,Nantong University,Nantong 226019,China;School of Transportation and Civil Engineering,Nantong University,Nantong 226019,China;School of Textile and Clothing,Nantong University,Nantong 226019,China;Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China)

机构地区：[1]南通大学杏林学院,江苏南通226019 [2]南通大学交通与土木工程学院,江苏南通226019 [3]南通大学纺织服装学院,江苏南通226019 [4]东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096

出　　处：《四川建筑科学研究》2019年第5期42-46,共5页Sichuan Building Science

基　　金：南通大学博士科研启动基金项目(2018B11);南通大学杏林学院自然科学基金项目(2016K129);江苏省大学生创新创业训练计划项目(201910304123Y)

摘　　要：基于OpenSees平台,提出了一种后张无粘结混合装配式框架(PTHP)的有限元建模方法。首先对框架节点进行了建模和分析,与试验结果比较,该建模方法可以较为准确地模拟节点在低周往复荷载下的力学性能;其次对1榀框架进行了静力弹塑性分析,由分析可知,罕遇地震下框架的层间位移角、梁端转角、柱端转角均低于限值。该框架的出铰情况属于“梁铰耗能”机制,体现了现行抗震规范中“强柱弱梁”的设计思想。结果表明,PTHP具有良好的抗震性能,是一种值得深入研究、推广的结构形式。The modeling method of the PTHP is established by using the finite element software OpenSees.First,the seismic behavior of the PTHP joint is analyzed under the low cycle reciprocal load.The results got from simulations agree well with the test results.Second,the pushover analysis of the PTHP is carried out.The storey drift of structure,the rotation angle of beam-column joint and plastic hinge of bottom part of column can meet the specification deformation requirements under the rare earthquake.The hinge of the frame is accord to the“beam hinge energy dissipation mechanism”which reflects the design idea of“strong column and weak beam”in the current seismic code.The results show that PTHP has good seismic performance,and it is worth of further study and popularization.

关 键 词：后张 无粘结 装配式 框架 静力弹塑性分析 

分 类 号：TU378.8[建筑科学—结构工程]