深圳罗湖商务大厦模型振动台对比试验
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摘要
深圳罗湖商务大厦结构由密柱框架-筒体结构体系改为稀柱框架-筒体结构体系.为比较结构的抗震性能,对设计修改前后的结构进行了整体模型模拟地震振动台试验.首先介绍了振动台试验的过程及现象并分析了结构的破坏模式,然后对比分析了结构的动力特性和加速度及位移反应.研究表明在7度罕遇烈度地震动作用下,在等效刚度下降幅度、结构主体部分(钢筋混凝土部分)最大加速度反应、结构顶点位移反应等方面,设计修改后的结构均小于设计修改前的结构.
Shenzhen Luohu Commercial Tower frame-tube structural system with dense columns was modified as a system with sparse columns.To compare seismic behavior of the structures,shaking table tests on models of original and modified structures were carried out.This paper presents the test process and result as well as an analysis of the structural cracking patterns.A comparative study of the original and modified models was conducted on their structural dynamic characteristics,acceleration and displacement responses.The results indicate that under rarely-occured earthquake of magnitude 7,the descending range of equivalent stiffness,maximum acceleration response of main structure(reinforced concrete part) and displacement response of structure top point of modified structure model are all less than those of the original one.
Shenzhen Luohu Commercial Tower frame-tube structural system with dense columns was modified as a system with sparse columns.To compare seismic behavior of the structures,shaking table tests on models of original and modified structures were carried out.This paper presents the test process and result as well as an analysis of the structural cracking patterns.A comparative study of the original and modified models was conducted on their structural dynamic characteristics,acceleration and displacement responses.The results indicate that under rarely-occured earthquake of magnitude 7,the descending range of equivalent stiffness,maximum acceleration response of main structure(reinforced concrete part) and displacement response of structure top point of modified structure model are all less than those of the original one.
引文
[1]邱仓虎,詹永勤,吴彦明,等.深圳罗湖商务大厦结构修改设计[J].建筑结构学报,2002,23(3):80.QIU Canghu,ZHAN Yongqin,WU Yanming,et al.The modi-fied structural design of Luohu Commercial Plaza[J].Journal ofBuilding Structures,2002,23(3):80.
[2]同济大学土木工程防灾国家重点实验室.深圳商隆大厦整体模型振动台试验研究报告[R].上海:同济大学土木工程防灾国家重点实验室,1997.Tongji University.State Key Laboratory of Disaster Reduction inCivil Engineering.Report of shaking table model test on ShenzhenShanglong Building[R].Shanghai:Tongji University.State KeyLaboratory of Disaster Reduction in Civil Engineering,1997.
[3]同济大学土木工程防灾国家重点实验室.深圳罗湖商务大厦整体模型振动台试验研究报告[R].上海:同济大学土木工程防灾国家重点实验室,2002.Tongji University.State Key Laboratory of Disaster Reduction inCivil Engineering.Report of shaking table model test on ShenzhenLuohu Commercial Tower[R].Shanghai:Tongji University.State Key Laboratory of Disaster Reduction in Civil Engineering,2002.
[4]徐磊,施卫星,张钧.超高层结构整体模型振动台试验研究[J].建筑结构学报,2001,22(5):15.XU Lei,SHI Weixing,ZHANG Jun.Simulated earthquake ex-periment study of a highrise building stucture model[J].Journalof Building Structures,2001,22(5):15.
[5]李素贞.两种不同结构型式的超高层建筑抗震性能比较研究[D].上海:同济大学结构工程与防灾研究所,2003.LI Suzhen.Comparative research on seismic behavior of two superhighrise buildings[D].Shanghai:Tongji University.ResearchInstitute of Structural Engineering and Disaster Reduction,2003.
[2]同济大学土木工程防灾国家重点实验室.深圳商隆大厦整体模型振动台试验研究报告[R].上海:同济大学土木工程防灾国家重点实验室,1997.Tongji University.State Key Laboratory of Disaster Reduction inCivil Engineering.Report of shaking table model test on ShenzhenShanglong Building[R].Shanghai:Tongji University.State KeyLaboratory of Disaster Reduction in Civil Engineering,1997.
[3]同济大学土木工程防灾国家重点实验室.深圳罗湖商务大厦整体模型振动台试验研究报告[R].上海:同济大学土木工程防灾国家重点实验室,2002.Tongji University.State Key Laboratory of Disaster Reduction inCivil Engineering.Report of shaking table model test on ShenzhenLuohu Commercial Tower[R].Shanghai:Tongji University.State Key Laboratory of Disaster Reduction in Civil Engineering,2002.
[4]徐磊,施卫星,张钧.超高层结构整体模型振动台试验研究[J].建筑结构学报,2001,22(5):15.XU Lei,SHI Weixing,ZHANG Jun.Simulated earthquake ex-periment study of a highrise building stucture model[J].Journalof Building Structures,2001,22(5):15.
[5]李素贞.两种不同结构型式的超高层建筑抗震性能比较研究[D].上海:同济大学结构工程与防灾研究所,2003.LI Suzhen.Comparative research on seismic behavior of two superhighrise buildings[D].Shanghai:Tongji University.ResearchInstitute of Structural Engineering and Disaster Reduction,2003.
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