内填再生混凝土墙的柔性钢框架结构抗震性能试验研究

发布时间：2018-01-08 10:18

本文关键词：内填再生混凝土墙的柔性钢框架结构抗震性能试验研究　出处：《建筑结构学报》2017年07期 　论文类型：期刊论文

【摘要】：将再生粗骨料轻质墙板内填至柔性钢框架结构中,通过对4榀单层单跨1∶3缩尺试件的拟静力试验,分析了结构的破坏模式、承载力、延性及耗能能力,研究了节点刚度对结构性能的影响及再生混凝土墙板作为主要抗侧力构件的可行性,并对结构的内力分配进行了分析。研究结果表明:再生混凝土墙板在增加结构承载力和刚度的同时,能缓解梁柱节点的转动变形,改善节点受力;内置墙板后,结构的承载力提高140%,初始刚度提高330%~360%,位移延性系数为2.44~3.28,层间位移角为0.02 rad时,承载力退化系数仍大于0.8,表明该结构具有较高的安全储备;同时,内填取代率100%再生骨料墙板的试件比普通混凝土墙板试件屈服荷载提高22%,而峰值荷载基本一致,表明墙板与柔性钢框架组合后结构的整体性能退化较小,可以作为主要抗侧力构件使用;结构中内填墙板承担的水平剪力较多时,钢框架承担的倾覆弯矩较少。
[Abstract]:Recycled lightweight wallboard filled to flexible steel frame structure, the 4 storey single span 1: 3 scale hysteretic test, analysis of failure mode of the structure, bearing capacity, ductility and energy dissipation capacity, studied the effect of joint stiffness on the performance of structure and regeneration of concrete wall the feasibility of the main anti lateral force components, and the internal force distribution of structure is analyzed. The results show that the recycled concrete wall to increase the structure bearing capacity and stiffness, can alleviate the rotational deformation of beam column joints, improve joints; built-in wall plate, the bearing capacity is increased by 140%, the initial to improve the stiffness of 330%~360%, displacement ductility coefficient 2.44~3.28, interlayer displacement angle of 0.02 rad, bearing capacity degradation coefficient is more than 0.8, shows that the structure has high safety; at the same time, filled in the specimen than substitution rate 100% recycled aggregate wallboard Through the concrete wall specimens yield load increased by 22%, while the peak load is basically the same, the wallboard and flexible steel frame combined structure overall performance degradation is small, can be used as the main component to resist lateral force; structure filled with horizontal shear more bear wall, steel frame bear overturning moment is less.

【作者单位】：西安理工大学土木建筑工程学院;西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51308454) 中国博士后科学基金项目(2013M542371) 陕西省博士后自然科学基金陕西省住房和城乡建设厅建设科技专项(2014-K12)
【分类号】：TU352.11;TU398.9
【正文快照】： 0引言再生混凝土既能减轻废弃混凝土对环境的污染,又能节省天然骨料资源,减少自然资源和能源的消耗,是发展循环经济、绿色建筑的主要途径之一[1]。早期再生混凝土的应用主要集中在路基路面及非承重构件方面[2-3]。肖建庄等[4]系统研究了再生混凝土抗压强度与再生粗骨料取代率

【参考文献】