摘要
通过建立含套筒连接钢筋灌浆缺陷构件的装配式混凝土框架结构整体模型,研究不同程度与位置的灌浆缺陷对结构抗震性能的影响,为结构安全定性评价方法提供参考。采用商业有限元分析软件ABAQUS建立结构模型,分析相同楼层不同缺陷程度和不同楼层相同缺陷程度对结构整体抗震性能的影响,讨论单一楼层内灌浆缺陷的程度与分布对结构屈服机制的影响。灌浆缺陷将导致所在楼层的层间位移角增大;同一楼层内结构的层间位移角随着缺陷程度的增大而增大;灌浆缺陷柱屈服后造成结构内力重分布,影响结构整体屈服机制,且对于结构的影响角柱大于中柱,中列柱大于边列柱。整体上通过控制薄弱层的灌浆缺陷程度,楼层内通过控制角柱及受力较大的柱的灌浆缺陷程度可有效减小灌浆缺陷对结构整体抗震性能的影响。
In order to provide references for qualitative evaluation method of structure safety,precast concrete frame structure overall model with rebar sleeve connection grouting defects was established to study the impact of structure seismic performance caused by the diversity of defects’level and distribution.The commercial finite element software ABAQUS was used to set up a serial of overall structure model with different defects levels on the same floor and consistent defects levels on the different floors to discuss the influence of the levels and distribution of grouting defect on the structural yield mechanism in a single floor.The numerical simulation shows that the story drift increased on the floor with grouting defects,and the increment increase with the defect level.The yield of column with grouting defects caused redistribution of the structural internal force which subsequently influence the structural overall yield mechanism,and the impact is greater for corner columns than central columns,for central columns than side columns.The result shows that control the grouting defects of the weak story,corner columns and high stress columns could effectively reduce the negative impact on the seismic performance of the structure induced by grouting defects.
作者
瞿浩川
杨学林
周平槐
高超
王震
QU Haochuan;YANG Xuelin;ZHOU Pinghuai;GAO Chao;WANG Zhen(Zhejiang Province Institute of Architectural Design and Research,Hangzhou 310006,China;Department of Civil Engineering,Zhejiang University City College,Hangzhou 310015,China)
出处
《建筑结构》
北大核心
2023年第S02期960-966,共7页
Building Structure
基金
浙江省重点研发资助项目(2018C03033-1)
浙江省建设科研项目(2022K145)
浙江省建筑设计研究院科研项目院(科)立字(2022)05号
浙江省基础公益研究计划项目(LGG22E080005)。
关键词
装配式
框架结构
灌浆缺陷
抗震性能
有限元
precast concrete structure
frame structure
grouting defects
seismic performance
finite element method
作者简介
第一作者:瞿浩川,硕士,工程师,主要从事结构动力弹塑性行为的研究,Email:quhaochuan@ziad.cn;通信作者:王震,博士,副教授,主要从事超高层和复杂钢结构的科研研究,Email:wzjggc@163.com。
