高层钢框架-混凝土核心筒混合结构振动台试验研究
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摘要
为了研究高层钢框架-混凝土核心筒混合结构的整体抗震性能,本文设计了一个典型的比例为1/15的20层钢框架-混凝土核心筒混合结构的缩尺模型,在同济大学土木工程防灾国家重点实验室实施了模拟地震振动台试验。本文重点介绍试验中模型结构在各级水准地震作用下的动力特性、加速度和位移反应,描述了模型结构的破坏位置及过程,并根据相似理论得到了原型结构的地震反应。试验研究表明:原型结构基本能够满足我国现行规范"小震不坏、大震不倒"的抗震设防标准;核心筒发挥了主要抗侧力作用;结构在大震作用下有较好的延性;钢框架与核心筒的连接节点在结构设计时应给予重视。
In order to study the seismic performance of a high-rise hybrid structure building with steel frame-concrete core wall,a 1/15 scale model of a typical 20-story steel frame-concrete core wall hybrid structure is designed and tested on the shaking table in State key laboratory for disaster reduction in civil engineering of Tonji University.This paper focuses on the study of the dynamic characteristics,acceleration and displacement responses of the model structure under different earthquake levels.The location and process of structure damage is analyzed and the seismic responses of the prototype structure are interpreted according to the similitude relation.It is shown that the prototype structure can satisfy the requirements of no damage under frequent earthquakes and no collapse under rare earthquakes basically;concrete core wall plays a major role in resisting lateral force;structural system has good ductility under rare earthquake;and the connection between the steel frame beam and the core wall should be paid attention to in the design of the structure.
In order to study the seismic performance of a high-rise hybrid structure building with steel frame-concrete core wall,a 1/15 scale model of a typical 20-story steel frame-concrete core wall hybrid structure is designed and tested on the shaking table in State key laboratory for disaster reduction in civil engineering of Tonji University.This paper focuses on the study of the dynamic characteristics,acceleration and displacement responses of the model structure under different earthquake levels.The location and process of structure damage is analyzed and the seismic responses of the prototype structure are interpreted according to the similitude relation.It is shown that the prototype structure can satisfy the requirements of no damage under frequent earthquakes and no collapse under rare earthquakes basically;concrete core wall plays a major role in resisting lateral force;structural system has good ductility under rare earthquake;and the connection between the steel frame beam and the core wall should be paid attention to in the design of the structure.
引文
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[7]周颖,吕西林,卢文胜,等.双塔连体高层混合结构抗震性能研究[J].地震工程与工程振动,2008,28(5):71-78.ZHOU Ying,LU Xilin,LU Wensheng,et al.Seismic performance of a multi-tower hybrid tall building[J].Journal of Earthquake Engineering andEngineering Vibration,2008,28(5):71-78.(in Chinese)
[8]周颖,吕西林,卢文胜.不同结构的振动台试验模型等效设计方法[J].结构工程师,2006,22(4):37-40.ZHOU Ying,LU Xilin,LU Wensheng.Shaking table test model design in different structure[J].Structure Engineers,2006,22(4):37-40.(inChinese)
[9]JGJ 3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002:25-33.JGJ 3-2002 Technical Specification for Concrete Structures of Tall Building[S].Beijing:China Architecture&Building Press,2002:25-33.(inChinese)
[10]GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008:38-41.GB 50011-2001 Code for Seismic Design of Building[S].Beijing:China Architecture&Building Press,2008:38-41.(in Chinese)
[2]张令心,郭风雨.钢-混凝土混合结构抗震研究述评[J].地震工程与工程振动,2004,24(3):51-56.ZHANG Lingxin,GUO Fengyu.Review of seismic research on steel-concrete mixed structures[J].Journal of Earthquake Engineering and Engi-neering Vibration,2004,24(3):51-56.(in Chinese)
[3]李国强,周向明,丁翔.高层建筑钢-混凝土混合结构模型模拟地震振动台试验研究[J].建筑结构学报,2001,22(2):2-7.LI Guoqiang,ZHOU Xiangming,DING Xiang.Shaking table study on a model of steel-concrete hybrid structure tall buildings[J].Journal ofBuilding Structures,2001,22(2):2-7.(in Chinese)
[4]卢文胜,苏宁粉,丁鲲,等.立面收进超限高层建筑结构振动台模型试验研究[J].地震工程与工程振动,2009,29(3):39-44.LU Wensheng,SU Ningfen,DING Kun,et al.Shaking table test on super high-rise building with setback in elevation[J].Journal of EarthquakeEngineering and Engineering Vibration,2009,29(3):39-44.(in Chinese)
[5]邹昀,吕西林,卢文胜,等.上海环球金融中心大厦整体结构振动台试验设计[J].地震工程与工程振动,2005,25(4):54-59.ZOU Yun,LU Xilin,LU Wensheng,et al.Shaking table model test design for Shanghai World Financial Center[J].Journal of Earthquake Engi-neering and Engineering Vibration,2005,25(4):54-59.(in Chinese)
[6]吕西林,孟春光,田野.消能减震高层方钢管混凝土框架结构振动台试验研究和弹塑性时程分析[J].地震工程与工程振动,2006,26(4):231-238.LU Xilin,MENG Chunguang,TIAN Ye.Shaking table test and elasto-plastic time history analysis of a high-rise CFRT frame structure withdampers[J].Journal of Earthquake Engineering and Engineering Vibration,2006,26(4):231-238.(in Chinese)
[7]周颖,吕西林,卢文胜,等.双塔连体高层混合结构抗震性能研究[J].地震工程与工程振动,2008,28(5):71-78.ZHOU Ying,LU Xilin,LU Wensheng,et al.Seismic performance of a multi-tower hybrid tall building[J].Journal of Earthquake Engineering andEngineering Vibration,2008,28(5):71-78.(in Chinese)
[8]周颖,吕西林,卢文胜.不同结构的振动台试验模型等效设计方法[J].结构工程师,2006,22(4):37-40.ZHOU Ying,LU Xilin,LU Wensheng.Shaking table test model design in different structure[J].Structure Engineers,2006,22(4):37-40.(inChinese)
[9]JGJ 3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2002:25-33.JGJ 3-2002 Technical Specification for Concrete Structures of Tall Building[S].Beijing:China Architecture&Building Press,2002:25-33.(inChinese)
[10]GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008:38-41.GB 50011-2001 Code for Seismic Design of Building[S].Beijing:China Architecture&Building Press,2008:38-41.(in Chinese)
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