蒋庆, 王瀚钦, 冯玉龙, 种迅. 损伤可控的含减震外挂墙板RC框架结构抗震性能分析[J]. 工程力学, 2019, 36(10): 144-151. DOI: 10.6052/j.issn.1000-4750.2018.10.0549
引用本文: 蒋庆, 王瀚钦, 冯玉龙, 种迅. 损伤可控的含减震外挂墙板RC框架结构抗震性能分析[J]. 工程力学, 2019, 36(10): 144-151. DOI: 10.6052/j.issn.1000-4750.2018.10.0549
JIANG Qing, WANG Han-qin, FENG Yu-long, CHONG Xun. SEISMIC PERFORMANCE ANALYSES OF A DAMAGE-CONTROLLING RC FRAME WITH DAMPING CLADDING PANELS[J]. Engineering Mechanics, 2019, 36(10): 144-151. DOI: 10.6052/j.issn.1000-4750.2018.10.0549
Citation: JIANG Qing, WANG Han-qin, FENG Yu-long, CHONG Xun. SEISMIC PERFORMANCE ANALYSES OF A DAMAGE-CONTROLLING RC FRAME WITH DAMPING CLADDING PANELS[J]. Engineering Mechanics, 2019, 36(10): 144-151. DOI: 10.6052/j.issn.1000-4750.2018.10.0549

损伤可控的含减震外挂墙板RC框架结构抗震性能分析

SEISMIC PERFORMANCE ANALYSES OF A DAMAGE-CONTROLLING RC FRAME WITH DAMPING CLADDING PANELS

  • 摘要: 预制混凝土外挂墙板作为一种高性能外围护构件在装配式建筑中得到广泛应用。为利用外挂墙板与主体结构之间的相对变形,提出在外挂墙板上部和下部分别采用钢筋线连接和U型耗能器(USD)的连接方式,形成含减震外挂墙板RC框架(F-USD)结构;进一步,在结构中加入摇摆墙,形成损伤可控的F-USD结构(F-USDRW)。基于校准的数值模型,进行了动力时程分析,对比了外挂墙板RC框架、F-USD和F-USDRW罕遇地震下USD耗能和结构响应。结果表明:提出的含USD外挂墙板可以实现减震目标;在F-USD中,各层USD耗能分布不均匀,某些楼层USD甚至不屈服;在F-USDRW中,摇摆墙可以有效地控制结构层间剪力和位移分布,各层USD均能够进入塑性阶段,提高了耗能的效率和能力,更有效地降低了结构位移响应和残余变形。

     

    Abstract: As a high-performance envelope component, precast concrete cladding panels are widely used in assembled buildings. To use the relative deformation between the cladding panels and the main structure, the steel bar and U-shaped damper (USD) connection methods are adopted at the top and the bottom of the cladding panels respectively to form an RC frame with damping cladding panels (F-USD). Furthermore, a damage-controlling RC frame with damping cladding panels (F-USDRW) is proposed through setting rocking walls in the F-USD. Based on a calibrated numerical model, a series of dynamic time-history analyses are performed to compare the USD energy dissipation with the structural responses of the frame, F-USD and F-USDRW under major earthquakes. The results show that the proposed cladding panels can achieve a damping target. In the F-USD, the USDs among stories occur with an uneven distribution of energy consumption, and the USDs at certain stories even do not yield. In the F-USDRW, the rocking wall can effectively control the distribution of inter-story shear and displacement, and the USDs at all stories can enter the plastic stage; thus, the energy consumption efficiency is improved and the structural displacement responses and the residual deformations are more effectively reduced.

     

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