摘要
北京工人体育场改造复建项目屋面采用聚碳酸酯波形板,对单块跨度3.5m的聚碳酸酯波形板分别进行了弹性阶段和破坏阶段的力学性能试验。试验通过设置不同数量支座以模拟不同跨度的聚碳酸酯波形板,试件分别是2支座约束的单跨板和3支座约束的双跨板,并根据项目的聚碳酸酯波形板实际安装情况,设置了水平和倾角安装方式。结果表明:在弹性阶段,3支座约束的双跨板刚度和承载能力显著增强;倾角安装方式下2支座约束的单跨板刚度大于水平安装方式,水平安装方式的双跨板在前6级加载下的刚度大于倾角安装方式。水平安装方式的双跨板破坏形式为局部发生断裂的脆性破坏,破坏时试验加载荷载为2.05kPa,最大应力为12.32MPa。研究结果表明3支座约束的双跨板在水平安装方式下的使用性能更优。
The roof of the Beijing Workers'Stadium renovation and rehabilitation project adopts polycarbonate corrugated boards,and the experimental on mechanical properties of the single polycarbonate corrugated board with a span of 3.5m were tested in the elastic stage and the failure stage respectively.The test set up different numbers of supports to simulate different spans of polycarbonate corrugated board,the test specimens were 2-support constrained single-span plate and 3-support constrained double-span plate,and according to the actual installation of the project engineering polycarbonate corrugated board,horizontal and inclined installation methods were set up.The results show that the stiffness and bearing capacity of the 3-support constrained double-span plate is significantly enhanced in the elastic stage.The stiffness of the 2-support constrained single-span plate under the inclination installation method is greater than that of the horizontal installation method,the double-span plate of the horizontal installation method has a greater stiffness than the inclination installation method under the first 6 stages of loading.The double-span plate failure form of the horizontal installation method is the brittle failure of local fracture,and the test load is 2.05kPa and the maximum stress is 12.32MPa.The results show that the 3-support constrained double-span plate is better in horizontal installation.
作者
王猛
王彬
张发强
李夏杰
WANG Meng;WANG Bin;ZHANG Faqiang;LI Xiajie(Beijing Construction Engineering Group Co.,Ltd.,Beijing 100055,China;Yatai Construction Science&Technology Consulting Institute Co.,Ltd.,Beijing 100120,China;Hebei Key Laboratory of Civil Engineering Catastrophe Control and Disaster Emergency Response,Langfang 065201,China;Architectural Engineering College,North China Institute of Science and Technology,Langfang 065201,China)
出处
《建筑结构》
北大核心
2023年第6期59-64,136,共7页
Building Structure
基金
河北省省级科技计划资助(22375410D)。
关键词
北京工人体育场
聚碳酸酯波形板
力学性能
约束类型
Beijing Workers Stadium
polycarbonate corrugated board
mechanical properties
constraint type
