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Study of the seismic response of a recycled aggregate concrete frame structure 预览 被引量:1

Study of the seismic response of a recycled aggregate concrete frame structure
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摘要 把三维的摇晃表格测试基于 six-degree-of-freedom,再循环的总数水泥的地震反应(皇家装甲兵) 框架被获得。分析结果显示最大的故事砍力量和翻的时刻还原剂按比例沿着在一样的地震下面的模型的高度飘动。这个故事砍力量,底砍当加速振幅增加,系数和结构的翻的时刻日益增多地增加。底砍系数被山峰地面加速(针网阵列) 首先控制。在 PGA 和 shear 系数之间以及在 PGA 和动态扩大因素之间的关系被数学适合获得。动态扩大因素在有弹性塑料的阶段很快减少,但是与有弹性粘性的阶段的发展慢慢地减少。当与自然总数水泥相比框架组织时,结果证明 RAC 框架结构有合理 deformability。分别地,在 8 测试分阶段执行的经常、稀罕的紧张下面的 RAC 框架模型的最大的内部故事的飘移比率是 1/266 和 1/29 它根据中国地震设计要求比 1/500 和 1/50 的许可的价值大。不过, RAC 框架结构不从 0.066 g 与针网阵列在基础刺激下面崩溃直到 1.170 g。 Based on six-degree-of-freedom three-dimensional shaking table tests, the seismic response of a recycled aggregate concrete (RAC) frame was obtained. The analysis results indicate that the maximum story shear force and overturning moment reduce proportionally along the height of the model under the same earthquake wave. The story shear force, base shear coefficient and overturning moment of the structure increase progressively as the acceleration amplitude increases. The base shear coefficient is primarily controlled by the peak ground acceleration (PGA). The relationships between the PGA and the shear coefficient as well as between the PGA and the dynamic amplification factor are obtained by mathematical fitting. The dynamic amplification factor decreases rapidly at the elastic-plastic stage, but decreases slowly with the development of the elastic-plasticity stage. The results show that the RAC frame structure has reasonable deformability when compared with natural aggregate concrete frame structures. The maximum inter-story drift ratios of the RAC frame model under frequent and rare intensity 8 test phases are 1/266 and 1/29, respectively, which are larger than the allowable value of 1/500 and 1/50 according to Chinese seismic design requirements. Nevertheless, the RAC frame structure does not collapse under base excitations with PGAs from 0.066 g up to 1.170 g.
作者 Wang Changqin Changqing Wang (1) (3) ; Jianzhuang Xiao (1) (2) ;
出处 《地震工程与工程振动:英文版》 SCIE EI CSCD 2013年第4期669-680,共12页 Earthquake Engineering and Engineering Vibration
基金 the Key Projects of the China National Science & TechnologyPillar Program under GrantNo. 2008BAK48B03, and the National Natural Science Foundation of China under Grant No. 51178340
关键词 混凝土框架结构 再生骨料混凝土 地震响应 峰值加速度 底部剪力系数 倾覆力矩 基底剪力 塑性阶段 recycled aggregate concrete (RAC) frame structure seismic response shear coefficient dynamicamplification factor
作者简介 Correspondence to: Xiao Jianzhuang, Department of Building Engineering, Tongji University, Shanghai 200092, China Tel: +86-21-65982787; Fax: +86-21-65986345 E-mail: jzx@tongji.edu.cn Assistant Professor; Professor
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