内嵌轻质混凝土墙板部分包裹混凝土T形柱-H型钢梁装配式框架的抗震性能试验研究

扫码查看

原文链接

万方数据
维普

中文摘要：为研究内嵌轻质混凝土(ALC)墙板的部分包裹混凝土(PEC)T形柱-H型钢梁装配式框架的抗震性能,进行了两层一跨的1榀PEC-T形柱框架和1榀内嵌ALC墙板PEC-T形柱框架低周反复荷载对比试验,观察框架破坏现象,分析其滞回曲线、骨架曲线、刚度退化、耗能能力等.试验研究结果表明:PEC-T形柱-H型钢梁框架结构具有良好的抗震性能,两榀框架的屈服位移角约为1/130和1/110,而破坏位移角约为1/35,两榀框架各层的位移延性系数均大于2,满足结构抗震设计的要求;ALC墙板对框架刚度、承载力及耗能能力的贡献主要体现在受力初期,随着结构变形的进一步增加,ALC墙板提前退出工作,荷载主要由主体结构承担,且屈服后由于ALC墙板与主体结构的相互滑移导致框架后期整体耗能能力降低.通过有限元软件ABAQUS建立装配式框架有限元模型,发现弱填充墙对框架节点区影响较小,但随着上部层间刚度的增加,底层框架柱截面剪力占比提高,导致底层框架柱出现剪切滞后以及剪切破坏.

外文标题：Experimental study on seismic performance of prefabricated frames with embedded lightweight concrete wall panels partially wrapped in concrete T-shaped columns and H-shaped steel beams

外文摘要：To study the seismic performance of partially encased concrete(PEC)T-columns and H-shaped steel beam prefabricated frames with embedded lightweight concrete(ALC)wall panels,low-cycle repeated load comparative tests were conducted on one PEC T-column frame with two floors and one span,and one PEC T-column frame with embedded ALC wall panels.The failure phenomena of the frames was observed,and its hysteresis curves,skeleton curves,stiffness degradation,energy dissipation capacities,etc.were analyzed.The experimental results show that the PEC T-column H-shaped steel beam frame structure has good seismic performance,with yield drift angles of about 1/130 and 1/110 for the two frames,and failure drift angles of about 1/35.At the same time,the ductility coefficients of each floor of the two specimens are greater than 2,meeting the requirements of structural seismic design.The contribution of ALC wall panels to the stiffness,load-bearing capacity,and energy dissipation capacity of the frame is mainly reflected in the initial stage of stress.As the structure further deforms,the ALC wall panels withdraw from work early,with the load becoming mainly borne by the main structure.After yielding,the overall energy dissipation capacity of the frame decreases due to the sliding between the ALC wall panels and the main structure in the later stage.Using the finite element software ABAQUS,a prefabricated frame finite element model was established.The finite element analysis results show that weak infill walls have a relatively small impact on the frame node region.However,as the upper inter-story stiffness increases,the proportion of shear force in the bottom frame column section increases,leading to shear lag and shear failure of the bottom frame column.

外文关键词：

prefabricated framePEC T-shaped columnsALC panelsquasi-static testfinite element analysisseismic performance

作者：

王波、杨帆、王静峰、孙嘉

展开 >

作者单位：

合肥工业大学土木与水利工程学院,安徽合肥 230009

合肥工业大学土木工程结构与材料安徽省重点实验室,安徽合肥 230009

合肥工业大学水泥基材料低碳技术与装备教育部工程研究中心,安徽合肥 230009

关键词：

装配式框架部分包裹混凝土 T形柱 ALC墙板拟静力试验有限元分析抗震性能

基金：

国家自然科学基金项目国家自然科学基金项目中央高校基本科研业务费专项安徽高校协同创新项目

项目编号：

5217813652278170PA2023GDSK0066GXXT-2019-005

出版年：

2024

DOI：

10.14006/j.jzjgxb.2023.0344

建筑结构学报

中国建筑学会

建筑结构学报

CSTPCD北大核心

影响因子：1.546

ISSN：1000-6869

年,卷(期)：2024.45(11)