基于工程实例的新型预制剪力墙结构静力弹塑性推覆分析

Pushover Analysis of New Prefabricated Shear Wall Structure based on Engineering Examples

鉴于采用套筒灌浆连接的装配整体式剪力墙结构存在灌浆施工质量难以检测等问题,开展新型预制剪力墙结构研究工作至关重要。本文利用某软件建立新型预制剪力墙和现浇剪力墙模型,进行PUSHOVER(静力弹塑性推覆)分析,研究边缘构件钢筋采用后浇混凝土连接、墙身部分墙体通过坐浆法施工的新型节点剪力墙应用于整体结构时的性能表现,并与现浇结构对比,评估其抗震能力。结果表明,新型剪力墙的性能表现接近现浇结构的性能,两种结构的剪力墙受力状态和构件塑性铰分布情况接近,结构各项计算指标均达到性能要求。该新型剪力墙结构体系具有一定的工程应用前景。

In view of the problems that the prefabricated integral shear wall structure connected by sleeve grouting is difficult to detect the grouting construction quality,it is very important to carry out the research on the new prefabricated shear wall structure.In this paper,a new model of prefabricated shear wall and cast-in-situ shear wall with partial vertical reinforcement unconnected is established by certain software,and PUSHOVER(static elastic-plastic pushover)analysis is carried out to study the performance of partial vertical reinforcement unconnected shear wall when it is applied to the overall structure,and compare with the cast-in-situ structure to evaluate its seismic capacity.The results show that the performance of the new shear walls is close to that of cast-in-situ structure,the stress state of shear walls and the distribution of plastic hinges of the members of the two structures are similar,and the calculation indexes of the structure meet the performance requirements.It is proved that the new shear wall structures have certain engineering application prospects.