【作者】 王伟；

【导师】 林树枝； 郭子雄；

【作者基本信息】 华侨大学 ， 建筑与土木工程， 2012， 硕士

【摘要】 为了实现震后快速加固修复和建筑节能改造等综合加固改造要求，提出采用预制自保温RC墙板(PSHW)对损伤RC框架快速加固的技术方案。自保温墙板由两片RC墙板及聚乙烯泡沫板组成。进行了2片PSHW以及1片RC剪力墙的低周往复加载试验，研究配筋率对PSHW抗震性能的影响以及与RC剪力墙性能的差异。通过实验结果对各试件的破坏特征、滞回曲线、骨架曲线、开裂荷载以及开裂位移角进行分析。试验研究结果表明：（1）试件两片墙板协同工作性能良好；（2）预制自保温RC墙板的开裂荷载大于普通剪力墙。进行了4片PHSW加固震损框架的低周往复加载试验，研究PHSW和损伤框架之间的连接构造以及墙板配筋率对加固效果的影响，对各试件的破坏特征、滞回曲线、骨架曲线、刚度退化、强度退化规律等进行分析。试验结果表明：（1）采用PHSW的加固方法可大幅度提高震损框架的承载能力；（2）震损框架修复后的抗剪强度以及PHSW与损伤框架之间的连接构造是决定试件最终承载能力的主要因素。通过对损伤加固试件的受力机理的分析提出了损伤加固框架的强度和刚度的实用计算公式，并给出了加固试件骨架曲线模型。针对“弱填充墙，强框架”以及“强填充墙，弱框架”进行静力弹塑性分析，重点研究填充墙的布置形式对主体框架在周期折剪、承载能力、塑性铰分布、性能点的影响规律更多还原

【Abstract】 A technology for retrofitting damaged reinforced concrete(RC) frames withprefabricated heat-insulation sandwich wall panels(PHSW) is proposed to meet theurgent need of rapid retrofitting of damaged structures after earthquake. The PHSW iscomprised bye two pieces of RC wall panels at the outside and one piece of foampanel in the middle.Two PHSWs and one RC shear wall were tested under cyclic loading to investigatethe influence of reinforcement ratio to the seismic behavior of PHSWs and theperformance difference between PHSWs and RC shear walls. The failure modes,hysteretic characteristics, deformation capacity and load carrying capacity wereanalyzed based on test data. It is indicated that:(1) the RC wall panels of the PHSWcooperated together well;(2) the cracking load of PHSWs was higher than the RCwall.Four damaged RC frame retrofitted by PHSW were tested under cyclic loading toinvestigate the influence of the connection details between PHSW and the damagedframe, reinforcement ratio of PHSWs to the seismic behavior of retrofitted specimens.The failure modes, hysteretic curves, skeleton curves, stiffness and strengthdeterioration were analyzed. Experimental study indicated that:(1) the strength ofretrofitted frames using PHSW was remarkably enhanced;(2) the shear strength ofretrofitted frames, the connection details between PHSW and the damaged framewere the main parameters which affected the strength of the specimens.The calculation formula of strength and stiffness and restoring force model of theretrofitted frames with PHSW was proposed based on the mechanism analysis of thespecimens. Elastic-plastic analysis method for seismic responses of infilled RC frameis studied. To research the effect of configuration of infill wall on RC framestructure， push-over analysis of4and12storey RC infilled frame were carried out. Based on the calculation results, the period-reduction factor, bearing capacity,distribution of plastic hinge and performance point were investigated.更多还原