| 偏心支撑半刚接钢框架的动力特性及抗震性能试验研究 |
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| 引用本文： | 郭兵,刘国鹏,徐超,王金涛,鲍镇,梁田. 偏心支撑半刚接钢框架的动力特性及抗震性能试验研究[J]. 建筑结构学报, 2011, 32(10): 90-96 |
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| 作者姓名： | 郭兵 刘国鹏 徐超 王金涛 鲍镇 梁田 |
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| 作者单位： | 山东建筑大学 土木工程学院， 山东济南 250101 |
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| 基金项目： | 国家自然科学基金项目(50778106); 教育部新世纪优秀人才支持计划项目(NCET-08-0880) |
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| 摘 要： | 偏心支撑半刚接钢框架是一种新型抗震结构体系，为研究其动力特性及抗震性能，进行了4个三层空间框架试件的试验研究。动力特性测试表明，随着梁柱节点转动刚度的降低，结构自振频率减小，阻尼比增加。循环加载试验表明，节点刚度和承载力对偏心支撑框架结构的滞回性能有显著影响，节点刚度和承载力越高，滞回性能越好，节点刚度较低的偏心支撑框架不宜用于抗震设防区；偏心支撑显著增加了半刚接钢框架的抗侧刚度，使得节点刚度对框架刚度的影响减弱，但降低了结构延性；结构的塑性变形主要来自节点域、消能梁段及梁柱节点连接件；多层偏心支撑框架的侧移变形为剪切型，层间屈服位移角较大。
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| 关 键 词： | 动力特性 抗震性能 梁柱半刚性节点 拟静力试验 偏心支撑钢框架 |
Experimental study on dynamic characteristics and seismic performance of semi-rigid steel frame with eccentric brace |
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| GUO Bing,LIU Guopeng,XU Chao,WANG Jintao,BAO Zhen,LIANG Tian. Experimental study on dynamic characteristics and seismic performance of semi-rigid steel frame with eccentric brace[J]. Journal of Building Structures, 2011, 32(10): 90-96 |
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| Authors: | GUO Bing LIU Guopeng XU Chao WANG Jintao BAO Zhen LIANG Tian |
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| Affiliation: | School of Civil Engineering, Shandong Jianzhu University, Ji’nan 250101, China |
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| Abstract: | Semi-rigid steel frame with eccentric brace is a new type of seismic structural system.In order to study its dynamic characteristics and seismic performance,four three-story space frame specimens were tested.Dynamic test results show that,with the reduction of rotational stiffness of beam-column connections,the natural frequency of frames decreases,and the vibration period and damping ratio increase.Cyclic loading test results show that the stiffness and strength of beam-column connections have a significan... |
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| Keywords: | eccentric braced steel frame semi-rigid beam-column connection quasi-static test seismic performance dynamic characteristic |
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