某6层钢框架加层房屋动静力学性能探讨

英文篇名：Discussion on static and dynamic mechanical properties of a six-story steel frame building with added story
中文刊名：世界地震工程
英文刊名：World Earthquake Engineering
作者：褚云朋 ; 姚勇 ; 杨亚龙 ; 王秀丽
英文作者：CHU Yunpeng1 ; 2 ; YAO Yong1 ; YANG Yalong1 ; WANG Xiuli2 ((1.College of Civil engineering ; Southwest University of Technology ; Mianyang 621010 ; China ; 2.School of civil Engineering ; Lanzhou University of Technology ; Lanzhou 730050 ; China))
中文关键词：轻钢加层 ; 地震作用 ; 动力特性分析 ; 支撑优化设计 ; 破坏模式
英文关键词：added story by lightweight steel ; earthquake action ; dynamic characteristic analysis ; the optimal design of the support ; failure mode
出版日期：2013-03-15
机构：西南科技大学土木工程与建筑学院;兰州理工大学土木工程学院;
年：2013
期：01
出版单位：世界地震工程

摘要

因房屋功能要求增加,对某六层钢框架房屋采用轻刚门架进行加层改造,经验算,基础及原结构不需进行加固,满足相关设计规范要求。利用有限元软件ETABS对上部主体结构进行了动静力学特性分析,探讨了加层前后静荷载下的承载力、变形,地震作用下结构自振频率、振型、层间位移角、加速度和破坏模式等性能变化,通过加设支撑改善结构刚度分布和动力特性,减小地震作用,使之满足相关设计规范要求,为类似加层改造工程提供设计参考。
In the story-adding transformation design of a six-story steel frame by added-story of light-weight portal frame for the increased functional requirements,it is found out that the foundation and original structure can be used and meet the design specification requirements without strengthening.This paper nalyzes the static and dynamic characteristics of its upper main structure by the software ETABS,explores the bearing capacity,deformation under static load before and after story-adding transformation and the changes of natural frequency,vibration mode,inter-story drift angle,acceleration and the failure mode of the structures under earthquake.By added support it is possible to improve the structural stiffness distribution and dynamic characteristics,reduce the seismic action,make it meet the design specifications.The paper provides a reference to similar story-adding transformation project.

引文

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