摘要
以郑州南站雨棚项目为实例,基于ABAQUS软件对比分析了异型曲面叠合板在吊装工况、运输工况、堆放工况等三种工况下的受力性能。对异型曲面叠合板的设计、生产过程进行了研究。模拟结果表明:在脱模工况下,桁架筋的间距对因脱模产生的挠度并未起到控制作用,构件并未在不同桁架筋间距布置下产生较大位移;采用四点支撑的方式运输,减少叠合板的堆放层数,比改变支撑方式效果好。由于曲面叠合板弧度较大,龄期较短以及堆放层数过多,会造成叠合板挠度过大,即使采用了两边支撑的方式,过大的挠度仍然不再适合工程使用。通过对三种不同工况下异型曲面叠合板的受力性能研究,获取异型曲面叠合板最佳桁架筋排布间距及支撑方式,具有较高的工程应用价值。
Taking the canopy project of Zhengzhou South Railway Station as an example,based on ABAQUS software,the mechanical performance of special-shaped curved laminated plate under three working conditions,such as hoisting condition,transportation condition and stacking condition,is analyzed.In this paper,the design and production process of special-shaped curved laminated plate are studied.The simulation results show that:under the condition of demoulding,the spacing of truss bars does not control the deflection caused by demoulding,and the member does not produce large displacement under different spacing arrangement of truss bars;It is better to reduce the stacking layers of laminated plates by using four point support mode than by changing the support mode.Because of the large curvature,short age and too many stacking layers,the deflection of the laminated plate will be too large.Even if the support method is adopted on both sides,the excessive deflection is still not suitable for engineering use.Through the research on the mechanical performance of special-shaped curved composite plate under three different working conditions,the optimal truss reinforcement spacing and support mode of special-shaped curved composite plate are obtained,which has high engineering application value.
作者
李旭光
魏金桥
孟旭
吴耀清
潘晓蒙
刘靖
LI Xuguang;WEI Jinqiao;MENG Xu;WU Yaoqing;PAN Xiaomeng;LIU Jing(China Construction Seventh Engineering Division Co.,Ltd.,Xi’an 710000,China;CSCEC Science&Technology Henan Co.,Ltd.,Zhengzhou 450000,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期1142-1146,共5页
Building Structure
关键词
装配式站房雨棚
异型曲面叠合板
支撑方式
prefabricated station canopy
special curved composite plate
support mode
