| 多层钢管混凝土柱-铰接钢梁-混凝土核心筒结构振动台试验研究 |
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| 引用本文： | 张鸿森,黄炎生,周靖.多层钢管混凝土柱-铰接钢梁-混凝土核心筒结构振动台试验研究[J].地震工程与工程振动,2020(2):227-238. |
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| 作者姓名： | 张鸿森 黄炎生 周靖 |
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| 作者单位： | 华南理工大学土木与交通学院;华南理工大学亚热带建筑科学国家重点实验室 |
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| 基金项目： | 华南理工大学亚热带建筑科学国家重点实验室项目(2017KC18);广东省自然科学基金项目(2018A030313688);湖南省自然科学基金项目(2018JJ2401)。 |
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| 摘 要： | 验证研究新型多层钢管混凝土柱-铰接钢梁-混凝土核心筒结构的震损和反应特点。制作9层1/40的缩尺模型进行振动台测试,调查结构的震损特点、动力特性和地震反应。结果表明:震损出现在楼板与钢管混凝土柱、核心筒以及钢梁连接处的楼板上,震损破坏为变形引起的连接构造破坏和结构性破坏;自振周期随震损增加而增大,动力放大效应减小,侧向变形和层间位移显著增大;结构平均最大层间位移角超过规范框架-核心筒结构不倒塌限值的4.08倍而未出现倒塌;外排架抗扭刚度小,结构扭转反应由核心筒主导;相对于超高层结构,多层结构的剪重比显著增大,未出现因倾覆力矩过大而导致核心筒破坏的情况,较大层间位移角与损伤破坏的相关性提高。
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| 关 键 词： | 多层钢管混凝土柱-铰接钢梁-混凝土核心筒结构 铰接节点 振动台试验 抗震性能 |
Experimental study on multi-rise CFST column-pinned steel beam-RC core tube structure |
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| ZHANG Hongsen,HUANG Yansheng,ZHOU Jing.Experimental study on multi-rise CFST column-pinned steel beam-RC core tube structure[J].Earthquake Engineering and Engineering Vibration,2020(2):227-238. |
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| Authors: | ZHANG Hongsen HUANG Yansheng ZHOU Jing |
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| Institution: | (School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China;State Key Laboratory of Subtropical Architecture Science,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The seismic damage and response characteristics of a new type of multi-rise CFST(concrete-filled steel tube) column-pinned steel beam-RC(reinforced concrete) core tube structure was studied. A 9-story 1/40 scaled model structure was constructed and carried out the shaking table tests. The damage characteristics, dynamic characteristics and seismic response of the structure were studied. The experimental results showed that the seismic damage mainly occurs on the concrete slab at the connection between the concrete slab and the CFST column, the concrete core tube and the steel beam. These damages include the connection damage and structural damage caused by deformation. The natural vibration periods increase with the increase of the seismic damage, the amplification factors decrease, and the lateral deformation and the inter-story drift significantly increase. The average maximum inter-story drift angle of the model structure exceeds 4.08 times of the no-collapse limit for the frame-core tube structure system, but multi-rise CFST column-pinned steel beam-RC core tube structure has no collapse. The torsion stiffness of the outer shelf is small, and the structural torsion response is dominated by the RC core tube. Compared with the super high-rise CFST column-pinned steel beam-RC core tube structure, the shear-weight ratio of the multi-rise structure significantly increases, but there is no seismic damage of the core wall due to excessive overturning moment. The correlation between the inter-story drift angle and seismic damage increases. |
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| Keywords: | multi-rise CFST column-hinged steel beam-RC core tube structure pinned connection shaking table test seismic behavior |
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