含减震外挂墙板装配式混凝土框架结构混合试验研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (18) : 276-285.

论文

侯林兵1, 2，种迅1, 3，霍璞1，苗启松4，陈曦4，黄亮1,3

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Hybrid test of precast concrete frame structures with energy dissipation cladding panels

HOU Linbing1, 2, CHONG Xun1 ,3, HUO Pu1, MIAO Qisong4, CHEN Xi4, HUANG Liang1, 3

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摘要

在外挂墙板与主体结构间引入耗能连接可形成减震外挂墙板。现阶段缺乏对含减震外挂墙板装配式混凝土结构动力响应和减震效果的试验研究。为此，本文设计了一榀6层3跨含减震外挂墙板平面框架结构（简称“减震结构”）以及一榀作为对比的纯框架结构（简称“抗震结构”），取底部中跨两层作为试验子结构，其余部分作为数值子结构，开展了两结构的混合试验。基于试验结果，分析了含减震外挂墙板装配式混凝土框架结构的损伤模式和动力响应，揭示了外挂墙板与主体结构协同工作的减震机理。结果表明：减震结构与抗震结构的损伤模式基本一致，均为梁端、柱底先后出现塑性铰，减震外挂墙板未改变主体结构的损伤演化模式；试验过程中，外挂墙板本身以及墙板与结构连接处均未出现裂缝，墙板可将结构层间变形有效传递至消能器；设防、罕遇和极罕遇地震下，减震结构的最大层间位移角较抗震结构分别减小了12.59%、17.68%和10.34%，具有较好的减震效果。

Abstract

Energy dissipation connections are introduced between the precast concrete (PC) frame structure and cladding panels, thereby forming the energy dissipation cladding panel (EDCP). The experimental investigations on dynamic responses and damping effect of the PC frame structure with EDCPs are lacking. Hence, a six-story, three-span planar frame structure with EDCPs (named “damping structure”) and a counterpart planar bare frame structure (named “seismic structure”) were designed. Then the middle span, bottom two stories of the frame was chosen as the test substructure, while the rest of structure was regarded as the numerical substructure. Hybrid tests on the damping and seismic structures were conducted, the damage modes and dynamic responses of the seismic and damping structures were analyzed. The damping effect and seismic performance of damping structure were clarified, as well as the collaborative mechanism of vibration reduction was revealed. The results indicated that damage evolution mode of the two structures were basically the same, with plastic hinges appearing successively at the ends of beams and the roots of columns, therefore the EDCP did not change the damage evolution mode of the main structure. No cracks were observed on the cladding panels and joints between the EDCP and main structure, and the structural inter-story displacement can effectively be transferred to USD through EDCPs. The maximum inter-story drift ratio of the damping structure was reduced by 12.59%, 17.68% and 10.34% under design-based earthquake, maximum considered earthquake and very rare earthquakes respectively, showing a satisfactory damping effect.

导出引用

侯林兵1, 2，种迅1, 3，霍璞1，苗启松4，陈曦4，黄亮1,3. 含减震外挂墙板装配式混凝土框架结构混合试验研究[J]. 振动与冲击, 2023, 42(18): 276-285

HOU Linbing1, 2, CHONG Xun1,3, HUO Pu1, MIAO Qisong4, CHEN Xi4, HUANG Liang1, 3. Hybrid test of precast concrete frame structures with energy dissipation cladding panels[J]. Journal of Vibration and Shock, 2023, 42(18): 276-285

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