双塔连体复杂结构抗震性能数值分析  

Numerical Analysis for Seismic Performance of A Double-tower Connected Complex Structure

作　　者：刘照球[1] 齐虎[2] 李云贵[2] 

机构地区：[1]盐城工学院土木工程学院,盐城224051 [2]中国建筑科学研究院,北京100013

出　　处：《工程抗震与加固改造》2012年第4期107-112,95,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家"十一五"科技支撑计划重点课题(2006BAJ01B01-07)

摘　　要：针对双塔连体复杂高层结构,结合ABAQUS强大的非线性求解能力,通过SATWE建立结构分析模型导入ABAQUS中进行弹塑性动力数值模拟分析。所研究工程采用不等高的主、副双塔,副塔立面一侧成斜线向上扩张,刚度和质量均不对称,超出国家现行设计规范和规程规定。选用修正的弹塑性损伤本构模型在ABAQUS中二次开发,地震波采用上海某人工波SHW2,得到结构在7度多遇和罕遇地震作用下的破坏模式和内力、变形情况。将计算结果和振动台试验数据进行比较,结果表明:采用修正的本构模型在ABAQUS软件中的分析结果与振动台试验结果在结构自振频率、振型形态、最大楼层位移、顶层位移时程等方面符合较好,为双塔连体类型的复杂高层结构在地震作用下的受力状态和反应特点提供了一种行之有效的弹塑性数值模拟方法。Owing to the powerful ability for the nonlinear analysis of structures, the ABAQUS software is adopted to analyze the elastic- plastic dynamic performance for a partial double-tower connected building under the effect of earthquake. The structural analysis model of the building is established by SATWE （Space Analysis of Tall-Buildings with Wall-Element） software, and is extracted to the ABAQUS by a conversion interface. The selected building is comprised by two unequal towers, and is connected on the upper part. The vertical side of the vice-tower is designed to expand to its top with diagonal style, which leads to the dissymmetry stiffness and quality, and beyond the current national design codes. Based on the modified elastic-plastic model developed in ABAQUS, the deformations, internal forces and damage patters of the building under the frequent and rate intensity of 7 degree earthquake are analyzed by inputting an artificial simulation seismic wave （named SI-IW2）. Comparing with the shaking table test, the computing results show that the time history of the natural frequency, mode shapes and maximum floor displacements of the building are closed to the test results of shaking table. From the paper, it also provides an effective elastic-plastic numerical simulation method for analysis of the response characteristics and damage patters of double-tower complex connected high-rise building under the effect of earthquake.

关 键 词：局部双塔楼 上连体结构 复杂高层建筑 抗震性能 数值分析 

分 类 号：TU352.11[建筑科学—结构工程] TU347