新闻搜索
文章正文
考虑下部柱支承四角锥网架结构动力响应分析
作者:管理员    发布于:2014-12-20 17:27:32    文字:【】【】【
摘要:土木工程学报——2014.12(47) CHINA CIBIL ENGINEERING JOURNAL
考虑下部柱支承四角锥网架结构动力响应分析
孙梦涵1,2范 峰1,2支旭东1,2孔德文1,2
( 1. 哈尔滨工业大学结构工程灾变与控制教育部重点实验室,黑龙江哈尔滨 150090;2. 哈尔滨工业大学土木工程学院,黑龙江哈尔滨 150090)
摘要: 近些年来破坏性地震造成了很多大空间网架结构中的支承杆件的屈曲、支座处支承杆的断裂等不同程度的破坏,如汶川地震、芦山地震均有此类情况发生,使得国内外的学者对其破坏机理的研究给予更高的重视。同时,对以往仅考虑上部网架结构本身结构特点而忽略下部支承结构在振动中的偶联影响的分析方法做了重新的审视。对地震作用下考虑下部结构的整体网架结构进行分析,以带有柱支承的正放四角锥和斜放四角锥的两种典型网架形式为例,在水平和竖向地震作用下,对不同刚度下部支承构件的网架结构抗震性能进行对比分析,同时研究了场地类型条件对于考虑下部柱支承网架结构的影响,分析给出不同刚度支撑在水平地震动反应谱和竖向地震动反应谱作用下对整体网架结构抗震性能的影响的具体范围,并提出对于两类常用四角锥网架结构的水平刚度作用系数和修正了原有的竖向地震作用系数。
关键词: 正放四角锥网架; 斜放四角锥网架; 水平向地震加速度反应谱; 竖向地震加速度反应谱; 抗震性能
中图分类号: TU311.3 文献标识码: A 文章编号: 1000-131X( 2014) 12-0009-07
Analysis on dynamic response of quadrangular pyramidgrid structure with supporting columns
Sun Menghan1,2Fan Feng1,2Zhi Xudong1,2Kong Dewen1,2
( 1. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education,Harbin Institute of Technology,Harbin 150090,China;2. School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China)
Abstract: In recent years,destructive earthquakes,such as the Wenchuan earthquake and the Lushan earthquake,havecaused buckling of supporting members in large space grid structures and certain damages of bracing members,whichattracted intense attentions of scholars to its failure mechanism. As a result,the conventional analyzing method,whichonly considers the characteristics of upper structure,and ignores the coupling effect between the supporting members andthe upper structure,is reviewed. In this study,the grid structures with supporting columns are analyzed. With theregularly and obliquely placed quadrangular pyramid grid structures taken as the example,the seismic performances ofgrid structures with supporting columns of different stiffness are compared. In addition,the influence of site type on thiskind of grid structure is evaluated. Consequently,the specific influence ranges from the varied stiffness on the gridstructure under the impact of horizontal and vertical response spectrum are provided. Furthermore,the preliminaryaseismic design methods are proposed for the two common types of grid structures.
Keywords: regularly placed quadrangular pyramid grid structure; obliquely placed quadrangular pyramid grid structure;horizontal response spectrum; vertical response spectrum; seismic performance
E-mail: sunmenghan163@sina.com


分享到: 更多
附件下载: (已下载0次)
脚注信息
版权所有 Copyright(C)2009-2021 东华理工大学薛凯喜博士教学科研团队
分享到: