摘要
为了研究组合管桁架的承载性能,对2根简支组合管桁架进行了竖向加载试验。分析了组合管桁架在竖向荷载作用下的受力性能、破坏机理、变形能力以及管桁架的内力分布规律。结果表明:组合管桁架具有良好的承载能力和变形能力;混凝土板厚的组合管桁架的承载能力高于板薄的组合桁架;上弦杆的轴力跨中较小,支座处较大;下弦杆的轴力跨中较大,支座处较小;跨中部分腹杆的轴力较小,支座部分腹杆的轴力较大。
In order to research load-bearing capacity of composite tube truss,two simply supported composite tube truss test under vertical loads is presented.The carrying capacity and failure mechanism,ductility,the regulation of the internal force distribution of composite tube truss were analyzed.The result of the test indicates the composite tube truss has good carrying capacity and deformation ability under vertical loads.The carrying capacity of thickness concrete slab composite tube truss is more than the thin concrete slab composite tube truss.The axial force of upper chord is small in midspan and close to the support axial force gradually increased.The axial force of lower chord is larger in midspan and close to the support axial force gradually decreases.Axial force of web member near support is large than web in midspan.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2012年第4期102-107,共6页
Journal of Wuhan University of Technology
基金
江苏省青蓝工程资助项目
关键词
组合管桁架
承载力
试验研究
破坏机理
composite tube truss
load carrying capacity
experimental investigation
failure mechanism
