弹性楼板开洞的多层钢框架地震反应  

Seismic Response Analysis of Multistory Steel Structure Considering Elastic Floor with Openings

作　　者：贾连光[1] 胡伟政[1] 王宇[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2005年第1期8-11,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：建设部2002年科技攻关项目(2002)

摘　　要：目的分析对弹性楼板的不同开洞比例和开洞位置的多层钢框架房屋的地震作用反应.方法用有限元分析软件ANSYS建模、进行动力时程分析,用多高层建筑结构三维分析与设计软件TAT进行比较来说明用ANSYS建模和计算的有效性.结果分析和比较了楼板不同开洞对自振周期,模态的参与系数,结构名义基底剪力和构件的最大剪力系数的影响.结论地震作用下对于偏心开洞的结构比较不利,对称开洞比较有利.多层钢框架结构不利于在Ⅲ、Ⅳ场地应用.This article aims to analyze the seismic response of multistory steel structure considering elastic floor with different openings such as different positions and different proportions. The method being used is the FEM soft ANSYS, to create the model and analysis. In order to identify the accuracy of the method creating the model with the FEM soft ANSYS, the article uses the practical FEM design soft TAT to verify the results. With the result that the effect of different elastic floor opening to the self-vibration frequency, participate coefficient of mode, nominal base shear and maximum shear coefficient are researched, the article draws the conclusion that the asymmetrical openings of the floor is comparative disadvantage under the seismic load and multistory steel structure is suggested not be constructed in III, IV ground.

关 键 词：弹性楼板 开洞位置 多层钢框架 地震反应 基底剪力 ANSYS 有限元计算 

分 类 号：TU337[建筑科学—结构工程] TU352.11