短肢剪力墙结构动力特性分析的半解析法  

Dynamic analysis for short-pier shear walls by semi-analytic approach

作　　者：黄东升[1] 程文瀼[2] 

机构地区：[1]南京航空航天大学土木工程系,江苏南京210016 [2]东南大学混凝土及预应力混凝土教育部重点实验室,江苏南京210096

出　　处：《振动工程学报》2005年第3期309-313,共5页Journal of Vibration Engineering

摘　　要：在进行短肢剪力墙结构的横向振动分析时,将其简化为质量集中在楼层标高处的串联质点系,采用半解析法导出了任意肢数短肢剪力墙结构的侧移刚度矩阵。这种方法在推导短肢剪力墙侧移刚度矩阵时,考虑了所有楼层之间的相互影响,因而得到的结果比传统的剪切型模型更能反映结构的实际状况。通过对一榀双肢对称短肢剪力墙的分析表明,本文方法所得出的结果与有限元法的结果能较好地吻合。Under the assumption that the mass of story is lumped at the floor and roof diaphragms, the short-pier shear wall structures may be idealized as a multiple-degree-of-freedom system with lumped masses in series linked by line elements, which are axially inextensible but laterally flexible. The lateral stiffness matrix for dynamic analysis of this system is derived by semi-analytic approach. The contribution of each lumped mass on each story has been considered in this method so that the results are more closed to actual cases than those given by shearing model. Analysis of a symmetry shear wall with double short piers are implemented as an exemplification to illustrate the validity of this approach. The results indicate that the lateral displacements and the periods of top 6 lateral vibration modes are in well accordance with those obtained by finite element method.

关 键 词：动力学 短肢剪力墙 侧移刚度矩阵 半解析法 

分 类 号：TU375[建筑科学—结构工程]