摘要
提出了一种新型阵列式组合模架体系,其由阵列式铝框、可调钢管支撑、水平杆及塑料平板模板组成。通过选取一单跨四柱框架单元,对该模架体系进行了足尺抗倾覆稳定性试验。结果表明:水平荷载作用下,模板架体结构保持稳定且表现出良好的侧向刚度,其与梁、柱模板协同工作下能满足整体抗倾覆稳定性要求。在此基础上,采用有限元软件MIDAS/Gen对试验架体结构建立考虑节点半刚性的三维分析模型,进行了几何非线性分析,并与试验对比得出:有限元结果与试验数据总体较为一致,说明建模和分析方法与实际试验模架结构受力基本相符;构件质量、材料缺陷、搭设操作及连接构造等因素对架体结构的整体稳定具有一定的影响。
A new type of array combined formwork support system is composed of array aluminium frames,adjustable steel pipe supports,horizontal tubes and plastic templates. A single-span four-column frame unit was selected to perform a full-scale anti-overturning stability experiment on the formwork support system. The experiment results showed that the formwork support system remained stable and exhibited good lateral stiffness under horizontal load. It could meet the requirements of overall anti-overturning stability with the cooperation of beam and column formworks.On this basis,the finite element software MIDAS/Gen was used to establish a three-dimensional analysis model of the experiment frame structure considering the semi-rigidity of joints,and the geometric non-linear analysis was carried out. By comparison,the analysis results were generally consistent with the experimental data,which showed that the modeling and analysis methods in the paper were basically consistent with the actual stress state of the experiment frame structure. The inevitable or expected randomness of member quality,material defects,installation operation and connection construction had a certain effect on the overall stability of the formwork support system.
作者
石开荣
林金龙
许洁槟
姜正荣
孙晖
陈炬
林林
SHI Kairong;LIN Jinlong;XU Jiebin;JIANG Zhengrong;SUN Hui;CHEN Ju;LIN Lin(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,China;State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510641,China;China Construction Science&Technology Co.,Ltd.,Shenzhen Branch,Shenzhen 518000,China;SSCZ Pangole New Material Co.,Ltd.,Shenzhen 516473,China)
出处
《工业建筑》
CSCD
北大核心
2020年第3期142-146,共5页
Industrial Construction
基金
亚热带建筑科学国家重点实验室开放课题(2019ZB27)。
关键词
模架
稳定
试验
有限元
formwork support
stability
experiment
finite element
作者简介
第一作者:石开荣,男,1978年出生,博士,副教授;通信作者:姜正荣,zhrjiang@scut.edu.cn。
