基于SAP2000的框剪-摇摆墙结构抗震性能研究

Research on seismic performance of frame rocking wall structure based on SAP2000

建立一个按照规范设计的10层框架-剪力墙结构作为研究模型,通过替换模型中纵向的剪力墙为摇摆墙从而改造得到框架-摇摆墙结构模型.采用SAP2000有限元分析软件对上述两种模型进行Push over分析和非线性动力时程分析,以此对比分析两者的抗震性能.分析结果表明:框架-摇摆墙结构较框架-剪力墙结构抗震性能优越,层间变形基本一致,结构损伤趋于均匀,显著改善了框架-剪力墙结构损伤过于集中的破坏方式,更容易达到"强柱弱梁"和"强剪弱弯"的设计准则,提高了结构的抗震性能,为新建框架-剪力墙结构改造成高抗震性能框架-摇摆墙结构体系提供参考,为后续提出其设计方法奠定基础.

This paper establishes a 10 layers frame shear wall structure model designed basis on the Chinese code with the rocking wall frame structure generated replacing the lengthwise frame shear wall with a rocking wall. Non linear dynamic analysis and Push over analysis have been done by SAP2000 in order to compare the the results of seismic performance of them. It is showed that rocking wall frame structure has a better seismic performance in contrast with the frame shear wall structure. Since rocking wall uniformly distributed inter sto ry drifts, suppressing the bottom story failure mechanism, the results demonstrate that the rocking wall frame structure is an effective solution to control of the structural deformation and distribution, enhances the seismic ability and provides a reference for the design of frame shear wall structure, and it sets a foundation for the design method.