考虑墙-框连接方式的砌体填充墙框架结构有限元计算及试验对比  

Finite element calculation and experiment comparison about masonry-infilled frame structure considering connection ways between infill wall and frame

作　　者：周晓洁[1] 陈培奇[1] 王玉良[1] 

机构地区：[1]天津城建大学土木工程学院,天津300384

出　　处：《世界地震工程》2015年第2期188-195,共8页World Earthquake Engineering

基　　金：天津市科技支撑计划重点项目(12ZCZDSF00500);国家973项目(2011CB013603);天津市青年基金项目(12JCQNJC05000)

摘　　要：墙-框柔性连接可减小墙-框相互作用,减轻填充墙破损程度,其相关研究具有重要的理论和工程意义。针对砌体填充墙框架结构有限元建模问题,本着简单高效的原则,提出了一种考虑墙-框连接方式的有限元建模方法:采用平面应力单元模拟填充墙,非线性弹簧单元模拟填充墙与框架梁、柱的连接。在粉煤灰空心砌块砌体填充墙框架结构水平往复荷载试验的基础上,分别进行了刚性连接和柔性连接填充墙框架结构水平往复荷载作用下的有限元分析。计算结果表明:利用有限元建模方法计算得到的滞回曲线和试验滞回曲线吻合较好,能够有效模拟填充墙开裂及破坏过程,反应不同连接方案时墙-框相互作用的特点,为砌体填充墙框架结构提供了一种新的建模思路。Flexible connection can reduce interaction between infill wall and frame and ease the damage extent of infill walls, so studies on that are significant both in theory and engineering. Aiming at the numerical simulation of masonry-infilled frame structure, meanwhile in view of the principle of simple and efficient, a method of finite ele- ment modeling considering connection ways between infill wall and frame was proposed. The plane stress element was utilized to simulate the infill wall and the nonlinear spring element was utilized to simulate the connection be- tween filled walls and frame beams or columns. Based on the cyclic horizontal load tests of fly-ash hollow block wall-infilled frame structure, the finite element analysis of wall-infilled frame structure with rigid connection and flexible connection under cyclic horizontal load were performed respectively. The calculation results show that the hysteretic curve calculated by the proposed finite element modeling method was in good agreement with experimental hysteretie curve. The proposed method which was able to simulate the development of crack and damage effectively and reflect the characteristics of wall-frame interactions under different connection schemes provided a new modeling thinking for wall-infilled frame structure.

关 键 词：填充墙框架结构 刚性连接 柔性连接 有限元分析 

分 类 号：TU323.5[建筑科学—结构工程] TU375.4