(1 河北工业大学土木与交通学院, 天津 300401; 2 河北省土木工程技术研究中心, 天津 300401)

摘要: 在装配式混凝土梁柱框架节点抗震性能试验基础之上,通过 ABAQUS 有限元软件创建了边节点试件模型,设计制作了 8 个试件,以模拟施工缝的不同留设位置. 在柱顶轴向力一定的情况下,水平方向施加循环往复荷载,通过模拟结果与试验结果的对比,分析得到了该试件的破坏形式、荷载-位移滞回曲线、骨架曲线、刚度退化曲线及其延性性能. 结果表明:施工缝留设位置在梁端至梁跨 1 / 4 区域时,试件的承载能力较差,不利于实际工程中的应用,留设位置在梁跨 1 / 3 ~ 3 / 5 区域时,试件的承载能力较高;施工缝留设位置在梁端 1 / 5 区域时,试件的刚度退化较快,且最终残余刚度较小;施工缝在节点核心区附近留设时,试件的整体延性较差.

关键词: 施工缝; 装配式框架节点; 有限元分析; 抗震性能

中图分类号:TU375. 4 文献标志码:A 文章编号:1002-848X(2023)11-0116-06

DOI:10. 19701 / j. jzjg. 20201743

Influence of construction joint position on seismic performance of prefabricated frame structure

YAN Xikang1,2, GUO Boshen1, ZHANG Jiameng1, XIE Hanlin1

(1 School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;2 Hebei Civil Engineering Technology Research Center, Tianjin 300401, China)

Abstract:Based on the seismic performance test of prefabricated concrete beam-column frame joints, the edge jointspecimen model was created by ABAQUS finite element software, and eight specimens were designed to simulate thedifferent positions of construction joints. Under the condition of certain axial force, cyclic load was applied in horizontaldirection. By comparing the simulation results with the experimental results, the failure mode, load-displacement hysteresiscurve, skeleton curve, stiffness degradation curve and ductility of the specimen were obtained. The results show that:When the construction joint is located in the quarter area from the beam end to the beam span, the bearing capacity of thespecimens is poor, which is not conducive to the application in practical engineering. When the position is 1 / 3~ 3 / 5 of thebeam span, the bearing capacity of the specimen is higher. When the construction joint is reserved in the 1 / 5 area of thebeam span, the stiffness degradation of the specimen is fast, and the final residual stiffness is small. When the constructionjoint is set near the core area of the joint, the overall ductility of the specimen is poor.

Keywords:construction joint; fabricated frame joint; finite element analysis; seismic performance

∗河北省自然科学基金(E2017202111).

第一作者:阎西康,博士,教授,博士生导师,主要从事地震作用下的结构性能、工程结构加固与维修等方面研究,Email:tjsyxk@ 126. com.

[引用本文] 阎西康,郭博深,张佳梦,等. 施工缝位置对装配式框架结构抗震性能影响[ J]. 建筑结构,2023,53(11):116-121. YAN Xikang,GUO Boshen,ZHANG Jiameng,et al. Influence of construction joint position on seismicperformance of prefabricated frame structure[J]. Building Structure,2023,53(11):116-121.