空心砖填充墙RC框架抗震性能足尺试验研究

发布时间：2018-04-06 23:37

本文选题：填充墙　切入点：RC框架　出处：《西南交通大学学报》2017年03期

【摘要】：为了研究空心砖填充墙钢筋混凝土框架结构的抗震行为,进行了1榀足尺空心砖完全填充、1榀足尺带洞口的单层单跨空心砖填充RC框架结构模型的水平低周循环荷载加载试验,研究了空心砖填充RC框架结构的破坏形式、滞回特性及位移延性等试验指标.在此基础上,结合国内外大量单层单跨填充墙RC框架模型的试验数据,分析了洞口对填充墙RC框架极限抗侧承载力和初始刚度的影响,给出了相应的折减系数计算式.研究结果表明:与带洞口的RC框架相比,完全填充的RC框架的水平峰值荷载在早期加载阶段最少可增加70%;随着填充墙破坏程度的加大,当层间位移角达到1%时,两者水平峰值荷载基本相等;洞口降低了填充墙RC框架的抗侧承载力,但结构的变形能力得到了改善,填充墙的开裂及破坏明显减轻.
[Abstract]:In order to study the seismic behavior of reinforced concrete frame structure filled with hollow brick, the horizontal low cycle load loading test of a single-story single-span hollow brick filled RC frame structure model is carried out.The failure mode, hysteretic characteristics and displacement ductility of RC frame structure filled with hollow brick are studied.Based on the experimental data of a large number of RC frame models of single-story single-span infilled wall at home and abroad, the influence of openings on ultimate lateral bearing capacity and initial stiffness of RC frame with infilled wall is analyzed, and the corresponding formula for calculating the coefficient of reduction is given.The results show that, compared with RC frames with openings, the horizontal peak loads of fully filled RC frames can increase at least 70% in the early loading stage, and with the increase of the damage degree of the filled walls, when the interstory displacement angle reaches 1%,The lateral bearing capacity of RC frame with infilled wall is reduced, but the deformation ability of the structure is improved, and the crack and damage of infilled wall are obviously reduced.
【作者单位】：西南交通大学土木工程学院;同济大学土木工程学院;
【基金】：四川省住房及城乡建设厅科技基金资助项目(2014S20025)
【分类号】：TU352.11;TU375.4

【相似文献】