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Title:: Experimental Study on the Influence of Core Hole Size on the Seismic Performance of Expansive Polystyrene Granule Cement Latticed Concrete Wall

作者:: 李小军¹; 2; 曹鑫雨¹; 唐柏赞³; (1.北京工业大学城市建设学部,北京 100124; 2.中国地震局地球物理研究所,北京 100081; 3.华东交通大学铁路环境振动与噪声教育部工程研究中心,江西南昌 330013)

Author(s):: LI Xiaojun¹; 2; CAO Xinyu¹; TANG Baizan³; (1.Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China)(2.Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)(3.Engineering Research Center of Railway Environment Vibration and Noise,Ministry of Education,East China Jiaotong University,Nanchang 330013,Jiangxi,China)

Keywords:: core-hole size; expansive polystyrene granule cement(EPSC); latticed concrete wall; pseudo-static test; seismic performance

摘要:: 为研究芯孔尺寸对传统型水泥聚苯模壳(EPSC)格构式混凝土墙体抗震性能的影响,对2个传统型EPSC格构式混凝土墙体原型试件进行低周往复荷载试验,2个试件芯孔直径分别为160 mm和120 mm; 对比分析了2个试件的破坏特征和承载力、滞回曲线、骨架曲线、刚度退化等抗震性能。结果表明:芯孔直径大的复合墙体具有更优良的抗震性能; 芯孔直径增加,复合墙体的承载力、抗侧刚度和耗能能力均有不同程度的提高。

Abstract:: In order to study the influence of the core-hole size on the seismic performance of the traditional expansive polystyrene granule cement(EPSC)latticed concrete walls,two traditional EPSC latticed concrete walls are subjected to lateral cyclic loading.The core-hole diameters of the specimens are 160 mm and 120 mm respectively.By the test,the failure mode and bearing capacity,hysteresis curve,skeleton curve,stiffness degradation and other seismic performance of each specimen were compared.The results show that the composite wall with a large core-hole diameter has better seismic performance; as the core-hole diameter increases,the bearing capacity,lateral stiffness and energy dissipation capacity of the composite wall improve to some degree.