考虑填充墙作用的钢筋混凝土框架结构抗震性能研究  

Seismic Performance of Reinforced Concrete Frame Structure in Consideration of the Effects of Infilled Wall

作　　者：齐正欣 周洋 张学坦 QI Zhengxin;ZHOU Yang;ZHANG Xuetan(Collage of Civil Engineering,Institute of Disaster Prevention,Sanhe 065201,China;Key Laboratory of Building Collapse Mechanism and Disaster Prevention,China Earthquake Administration,Sanhe 065201,China;Hebei Technology Innovation Center for Multi-Hazard Resilience and Emergency Handling of Engineering Structures,Sanhe 065201,China;Langfang Key Laboratory of Anti-Seismic Collapse of Engineering Structures,Sanhe 065201,China)

机构地区：[1]防灾科技学院土木工程学院,河北三河065201 [2]中国地震局建筑物破坏机理与防御重点实验室,河北三河065201 [3]河北省工程结构多灾害韧性与应急处置技术创新中心,河北三河065201 [4]廊坊市工程结构抗倒塌重点实验室,河北三河065201

出　　处：《防灾科技学院学报》2024年第3期30-41,共12页Journal of Institute of Disaster Prevention

基　　金：中央高校基本科研业务费研究生科技创新基金资助(ZY20220320);地震科技星火计划攻关项目(XH21055);河北省高等学校科学研究项目(ZC2024116)。

摘　　要：通过纯框架结构模型和半高填充墙框架结构模型拟静力试验,研究半高填充墙对框架柱破坏模式的影响。基于试验结果建立了钢筋混凝土框架结构抗震分析模型并开展参数化研究,分析了砌筑材料、墙体高度对结构抗震性能的影响。结果表明:填充墙的存在提高了结构的承载能力和刚度,但降低了结构的延性;随着墙体砌筑高度增加,混凝土柱自由高度降低,墙柱高度比为0.2时,砌体墙对框架结构的抗震性能影响不显著,当墙柱高度比达到0.6时,柱子破坏模式由弯曲破坏转变为剪切破坏;砌筑材料在墙柱高度比在0.4及以下时,对结构抗震性能影响的差异不显著,墙柱高度比在0.6及以上时对抗震性能影响的差异逐渐显现;相同砌筑高度下加气混凝土砌块填充墙对钢筋混凝土框架结构抗震性能影响最小,因此,在不采取其他改良措施的情况下,建议采用加气类混凝土砌块来降低填充墙对钢筋混凝土框架结构抗震性能的不利影响。In this paper,the impact of half-height infilled walls on the failure modes of reinforced concrete(RC)columns was studied by quasi-static experiments of the frame structure model and the half-height infilled walls frame structure model.On the basis of experimental results,the seismic analysis model of the RC frame structure was established,and then the parameter of the model was studied.The impact of materials properties and masonry height of walls on the seismic performance of RC frame structures was also analyzed.The results show that the bearing capacity and stiffness of the structure with the infilled walls are improved and the ductility of it is reduced.With the increase of masonry height of walls,the free height of concrete column decreases.When the wall-column height ratio reaches 0.2,the effect of masonry walls on the seismic performance of frame structure is not significant,and when the wall-column height ratio reaches 0.6,the column failure mode changes from bending failure to shear failure.When the wall-column height ratio is 0.4 or below,the influence of masonry materials of walls on the seismic performance of composite structure is not significant,but when the wall-column height ratio is 0.6 or above,the influence of masonry materials of walls on the seismic performance of frame structure gradually appears.When the structure with the same masonry height of walls,the impact of the aerated concrete block infilled walls on the seismic performance of RC frame structure is the least.Therefore,without other improvement measures,aerated concrete block is recommended to reduce the adverse impact of infilled walls on seismic performance of RC frame structure.

关 键 词：砌体填充墙 钢筋混凝土框架结构 砌筑高度 砌筑材料 地震破坏机理 

分 类 号：TU375.4[建筑科学—结构工程] TU352.11