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含预制内嵌外围护墙装配式剪力墙结构抗震性能计算分析*
赵德鹏1,周剑2,田春雨2,潘冰洪1,刘嵘1
摘 要

(1 华润置地有限公司, 深圳 518057; 2 中国建筑科学研究院有限公司,  北京 100013)

[摘要]为研究装配式剪力墙结构中预制内嵌外围护墙对主体结构抗震性能的影响及为结构设计提供依据,选取了3个典型工程作为案例,对整体结构模型进行了弹性分析和弹塑性分析,从结构模态、层间位移角、层剪力、侧向刚度、整体及局部破坏情况等角度,分析了围护墙对结构抗震性能的影响。结果表明:弹性分析时围护墙对主体结构刚度贡献显著,导致结构周期减小,层间位移角减小且在围护墙起始层存在层间位移角突变现象,层剪力增大;弹塑性分析时与不含围护墙的模型相比,含围护墙模型的层间位移角减小,层剪力增大,围护墙未优化时与结构构件共同受力破坏,采用优化构造可显著减小围护墙的不利影响。基于分析结果,建议工程中应优先在围护墙与主体结构之间采取有效的隔离措施;当围护墙未优化时应根据工程情况补充进行弹塑性分析,并采取局部加强措施。

[关键词]装配式剪力墙结构;预制内嵌外围护墙;抗震性能;弹塑性分析

中图分类号:TU973-2文献标识码:A文章编号:1002-848X(2021)05-0017-10

 

Calculation analysis of seismic behavior of assembled shear wall structure with precast embedded enclosure wall

ZHAO Depeng1, ZHOU Jian2, TIAN Chunyu2, PAN Binghong1, LIU Rong1

(1 China Resources Land Co., Ltd., Shenzhen 518057, China; 2 China Academy of Building Research Co., Ltd., Beijing 100013, China)

Abstract:To study the effects of precast embedded enclosure walls on the seismic behavior of main structure in assembled shear wall structure and provide evidence for structural design, three typical projects were chosen as cases, elastic analysis and elastic-plastic analysis were carried out for their whole structural models, the effects of enclosure walls on  the seismic behavior of structures were analyzed from the respects of structural modal, story drift, story shear force, lateral stiffness, whole and local damage. It is indicated that enclosure walls make a great contribution for structural stiffness, thus structural period is shorten, story drift decreases and a sudden change appears in the start floor of enclosure walls, and story force increases for the elastic analysis.  Compared with the model without enclosure walls, the elastic-plastic analysis of the model with enclosure walls shows that the story drift decreases, the story shear force increases, and enclosure walls without optimization  bear loads and fail with structural elements integrally. The negative impact of enclosure walls can be alleviated observably by adopting optimized measures. Based on the analysis results, it is suggested that effective isolation measures should be adopted between enclosure walls and main structure preferentially, elastic-plastic analysis and local strengthening measures could be taken according to the project situation when the enclosure walls without optimization are used.

Keywords:assembled shear wall structure;precast embedded enclosure wall;seismic behavior;elastic-plastic analysis

 

*中国建筑科学研究院有限公司课题(20190106330730003)。

 

作者简介:赵德鹏,学士,高级工程师,一级注册结构工程师,Email:zhaodepeng@crland.com.cn;通信作者:周剑,硕士,工程师,Email:zhoujian@cabrtech.com。

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