斜向肋格水泥聚苯模壳格构式混凝土墙体抗震性能试验  

Seismic Performance Test of Expansive Polystyrene Granule Cement Latticed Concrete Wall with Diagonal Bracing

作　　者：李小军 曹鑫雨[1] 唐柏赞 邓小芳 LI Xiaojun;CAO Xinyu;TANG Baizan;DENG Xiaofang(Beijing Key Lab.of Earthquake Eng.and Structural Retrofit,Beijing Univ.of Technol.,Beijing 100124,China;Inst.of Geophysics,CEA,Beijing 100081,China;Eng.Research Center of Railway Environment Vibration and Noise,Ministry of Edu.,East China Jiaotong Univ.,Nanchang 330013,China)

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点实验室,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

出　　处：《工程科学与技术》2022年第2期81-89,共9页Advanced Engineering Sciences

基　　金：国家自然科学基金项目(51908216);江西省主要学科学术和技术带头人培养计划项目(20204BCJL23032);江西省自然科学青年基金项目(20202BAB214026)。

摘　　要：水泥聚苯免拆模壳格构式混凝土墙是一种保温结构一体化复合墙体,设置斜向肋格水泥聚苯免拆模壳格构式混凝土墙是一种新模式。为研究该斜向肋格格构式混凝土墙体的抗震性能,进行3个格构式墙体原型试件的水平低周反复荷载试验,包括2个设置斜向肋格的新型和1个传统型格构式墙体,得到各试件承载力、滞回曲线、骨架曲线、延性和刚度退化等力学性能,以及破坏模式的试验结果。对比分析设置斜向肋格新型和传统型格构式墙体抗震性能的差异,同时探讨水泥聚苯模壳(EPSC)对设置斜向肋格的新型复合墙体抗震性能的影响。试验结果表明:设置斜向肋格的新型水泥聚苯免拆模壳格构式墙体较传统格构式墙体具有更高的承载力、弹塑性变形能力和耗能能力;EPSC和钢筋混凝土骨架协同工作,显著提高了墙体的耗能能力,一定程度提高了墙体的承载能力、刚度等力学性能。研究结果为其工程应用提供技术支撑。Expansive polystyrene granule cement(EPSC) non-demoulding latticed concrete wall is a composite wall integrating insulation and structure. The setting of diagonal bracing is a new mode of the wall. To study the seismic performance of the latticed concrete walls with diagonal bracing, laterally reversed low-cyclic loading tests on three prototype test specimens, including two new latticed walls with diagonal bracing and one traditional type were performed to investigate the mechanical properties such as bearing capacity, hysteresis curve, skeleton curve, ductility,stiffness degradation as well as the failure mode. The seismic performance difference of the new with diagonal bracing and the traditional latticed walls were compared and analyzed, the effect of EPSC on the seismic performance of composite walls were discussed. The test phenomena and analytical results showed that the new EPSC non-demoulding latticed wall with diagonal bracing had the higher bearing capacity, elastoplastic deformation capacity and energy dissipation capacity than the traditional one;the EPSC and the reinforced concrete skeleton works together to improve the energy dissipation capacity significantly, and to a certain extent improve the bearing capacity, stiffness and other mechanical properties of the wall. The study revealed the seismic performance characteristics of this new lattice composite wall, providing technical support for the engineering application.

关 键 词：斜向肋格 格构式混凝土墙体 水泥聚苯模壳(EPSC) 拟静力试验 抗震性能 

分 类 号：TU352[建筑科学—结构工程]