常见填充墙竖向不均匀布置对框架结构抗震性能的影响研究*
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(1 中国建筑科学研究院， 北京 100013； 2 住房和城乡建设部防灾研究中心， 北京 100013)
［摘要］历次震害调查表明，填充墙竖向不均匀布置会对框架结构产生不利影响，而传统设计方法并不能较好地考虑这些不利影响因素。基于OpenSees软件，通过自编代码建立了填充墙可自动退出计算的有限元模型，较真实地模拟了带填充墙框架结构在7条地震波作用下的反应；并从结构整体响应、构件内力以及结构破坏机制等方面比较全面地研究了填充墙竖向不均匀布置对框架结构的不利影响。通过理论分析，提出了填充墙抗侧移刚度的计算公式，揭示了这种不利影响的作用机理并提出改进方案，通过动力弹塑性时程分析验证了改进方案的正确性和有效性。［关键词］框架结构; 填充墙竖向不均匀布置; 动力弹塑性分析; 改进方案中图分类号：TU375.4 文献标识码：A 文章编号：1002-848X(2016)03-0024-08
Research on the influence of the vertical irregularities of infilled wall on the seismic performance of frame structuresLuo Rui1, Tang Caoming1,2, Luo Kaihai1,2, Yang Tao1,2(1 China Academy of Building Research, Beijing 100013, China; 2 Disaster Prevention Research Center, Ministry of Housing and Urban-Rural Development, Beijing 100013, China)Abstract:The previous earthquake damage investigations show that vertical irregularities of infilled wall have adverse impact on the structure, and traditional design method can not consider this adverse impact very well. A finite element model was established based on OpenSees software to achieve automatically exit of the infilled wall by self-compiled codes. The model factually simulated the response of the frame structure with infilled wall under the actions of 7 earthquake waves. The adverse effects of vertical irregularities of infilled wall on the frame structure were comprehensively studied from perspectives of the overall structural response, member internal forces and structure failure mechanism. By theoretical analysis, the calculation formula was proposed to calculate lateral stiffness of infilled wall, and the mechanism of this adverse effect was revealed and improved scheme was proposed. Through dynamic elasto-plastic time-history analysis, the correctness and effectiveness of the improved scheme was verified.Keywords:frame structure; vertical irregularities of infilled wall; dynamic elasto-plastic analysis; improved scheme
*中国建筑科学研究院应用基金项目(20120122330730044)。作者简介：罗瑞，硕士研究生，Email：915583959@qq.com。
