连廊设计对非对称高层结构地震响应影响

Influence of Corridor on Seismic Response of Asymmetric High-rise Structure

随着建筑结构形式的多样化发展,带连廊的非对称高层结构日益涌现,连廊设计对整体结构的抗震性能影响成为关注的重点。以某框架剪力墙高层办公楼为工程背景,利用SAP2000有限元软件建立模型,采用时程分析法,分析了多遇地震作用下,连廊连接方式和连廊设计位置对整体结构地震响应的影响。结果表明,连廊采用刚接或铰接对整体结构的地震响应影响较小,从结构优化设计角度则可优先采用铰接。连廊设在低楼层位置时,结构振幅、连廊内力和基底反力较小;连廊设置在较高楼层位置时,顶层侧移较小;在设计过程中应根据功能需要和受力特点综合考虑连廊位置。

With the diversified of architectural structures,asymmetrical high-rise structures with corridors are emerging. The impact of corridors on the seismic performance of the whole structure becomes the focus of attention. Taking a high-rise office building which is frame-shear wall structure as the engineering background. SAP2000,a finite element software,was used to establish the model. And time-history analysis method was used to analyze the influence of the corridor connection method and the design position on the integral structure. The results showed that there was less affection on the overall structure when the corridor was rigidly connected or articulated. But the use of articulated can optimize the design of structure. When the corridor is set at the lower floor,the amplitude of the structure,the internal force of the corridor and the reaction force of the base are small. When the corridor is set at a higher floor,the displacement of the top floor is smaller. The corridor position should be taken into account during the design.