地震动摇摆分量对非对称结构的影响  

Effects of the Seismic Rocking Component on Asymmetric Structures

作　　者：潘康[1] 罗奇峰[2] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]同济大学上海防灾救灾研究所,上海200092

出　　处：《结构工程师》2013年第3期93-97,共5页Structural Engineers

基　　金：国家自然科学基金项目(51078273)

摘　　要：利用MATLAB软件,从汶川地震一地震记录的平动分量计算得到摇摆分量,并采用ABAQUS有限元分析软件,分析两偏心结构的三维模型分别在地震动水平分量和水平加摇摆分量作用下的弹性位移响应。结果表明,地震动摇摆分量对双向偏心结构的影响比单向偏心结构大,在结构的较低层,摇摆分量对结构的位移有减弱作用,而在结构的较高楼层处,摇摆分量对结构位移响应的不利影响显著增加,在这类结构的抗震设计中应对摇摆分量的影响予以足够重视。The paper calculated the rocking component of the Wenchuan earthquake wave by using the MAT-LAB. Elastic displacement responses of two asymmetric structures subjected to translational component or both translational and rocking component were studied. The results show that the effect of rocking component to the two-way eccentric structure is greater than that of the one-way eccentric structure. For both structures, the dis- placement response is reduced on the lower floors when considering the rocking component, but the impact of rocking component increases significantly on the upper floors, which should be paid more attention to in seis-mic design.

关 键 词：摇摆分量 偏心结构 有限元分析 

分 类 号：TU311.3[建筑科学—结构工程]