侧向刚度不规则的超高层建筑振动台试验研究

摘要

A super high-rise RC frame-shearwall building with irregular horizontal stiffness is researched .Height of the building and horizontal stiffness are not satisfied with request of the Code for Seismic Design of Building .In order to study seismic behavior of the building , a 1/30 scale model is constructed and shaking table test is completed, and the corresponding finitee-lement model is established .The natural characteristics , acceleration, displacement and rotation of the model on/under three level earthquake are studied throught test and calculation in detail.The results of test indicate that seismic behaviors of the buildings is basically satisfied with request of the code for seismic design of the building , the same as the result finite element analysis of the model .But the seismic ability of the building in Y direction should be strengthed so as to avoid potential seismic safety risk .%一座具有多道加强层的超限高层框架剪力墙住宅建筑，其高度超过了规范的限值，侧向刚度不规则。为研究该建筑的抗震性能，对其进行了1／30模型的振动台试验研究，并建模分析了该结构的抗震性能，包括结构的自振特性、加速度反应、位移反应、扭转作用等。采用试验宏观现象、实测数据和有限元软件等手段分析，结果表明该超高层结构基本满足初步设计目标的抗震设防要求，建议在弱轴方向予以稍微加强，以提高结构弱轴方向的抗震能力，确保地震安全。