地震作用下框架-剪力墙结构动力响应研究

针对框架-剪力墙结构中框架与剪力墙相互作用下的地震响应求解问题,建立了高层框架-剪力墙结构的动力分析模型。框架结构部分对剪力墙结构部分的影响通过边界条件的引入,推导出框架-剪力墙结构的频率方程及振型正交条件,进一步对无限自由度框架-剪力墙结构的振动方程进行解耦,推导出框架-剪力墙结构的广义质量及广义荷载,然后通过振型叠...

Study of Seismic Earthquake for Frame-Shear Wall Structures Under Earthquake

Aimed to solution of earthquake effects for tall frame-shear wall buildings under the interaction of frame structures and shear wall structures, the dynamic modal for tall frame-shear wall buildings was presented. The influence of the part of frame structure to tall frame-shear wall buildings was considered by boundary conditions, and the frequency equation and mode orthogonal conditions of tall frame-shear wall buildings were derived. Then vibration equation of infinite-degrees frame-shear wall buildings was decoupled by these orthogonal conditions and the generalized mass and stiffness were obtained. Therefore, the seismic responses of tall frame-shear wall buildings can be solved by the mode superposition method. In order to validate the correctness of constructed dynamic modal and the method of solving earthquake effects for tall frame-shear wall buildings, a sixteen-story frame-shear wall building is chosen to analyze dynamic character and seismic response. Simulation results show dynamic character and seismic response obtained by constructed dynamic modal and the method of solving seismic response are basically consistent with finite element, the calculation accuracy can meet demand and calculation work can be reduced.