竹缠绕复合管-薄壁钢管组合结构轴压性能研究
Research on Mechanical Properties of Bamboo Winding Composite Pipe Reinforced Thin-Walled Steel Tube Composite Structures Under Axical Compression
张鹏 1杨丝棋 1邓宇 1倪淼 1凌道远1
作者信息
- 1. 广西科技大学土木建筑工程学院,广西柳州 545000
- 折叠
摘要
竹缠绕复合管是由我国独立研发的一种新型环保材料,为研究其约束薄壁圆钢管组合结构的轴压性能,对组合试件进行轴压试验,研究组合试件的破坏形式、承载能力;分析了荷载与位移、应变的变化趋势;并提出组合试件轴压极限承载力理论计算公式.最后运用ABAQUS有限元软件对组合试件进行参数化分析,分析了竹缠绕复合管厚度等参数对轴压性能的影响.试验结果表明:组合试件的破坏形式为试件中部侧向弯曲破坏;相比纯竹缠绕复合管和钢管,组合试件的极限承载力分别提高了 6.5倍和1.5倍;试验结果与有限元模拟结果吻合较好,理论计算承载力算式与试验结果误差为5.9％.
Abstract
The bamboo winding composite pipe is a new type of environmentally-friendly material independ-ently developed in China.In order to study the reinforced thin-walled circular steel tube composite struc-tures,axial compression tests were conducted on the composite specimens,and the failure modes and bear-ing capacity of the composite specimens were studied.Trends of load versus displacement and strain were analyzed,and a theoretical calculation formula for the axial compression ultimate bearing capacity of the composite specimens was proposed.Finally,ABAQUS finite element software was used to analyze the para-metric analysis of the composite specimen,as well as the influence of the thickness of bamboo winding com-posite pipe and other parameters on the axial compression performance.The experimental results showed that the failure mode of the composite specimens was lateral bending failure in the middle section of the specimen.Compared to pure bamboo winding composite pipes and steel tubes,the ultimate bearing capaci-ty of the composite specimens had increased by 6.5 times and 1.5 times,respectively.The experimental results were in good agreement with the finite element simulation results,and the error between the theoreti-cal calculation bearing capacity formula and the experimental results was 5.9％.
关键词
竹缠绕复合管/薄壁圆钢管/组合试件/轴压性能Key words
bamboo winding composite pipe/thin-wall round steel pipe/combined test piece/axial com-pression performance引用本文复制引用
基金项目
国家自然科学基金项目(52168016)
国家自然科学基金项目(52268021)
广西自然科学基金项目(2019JJA160137)
出版年
2024
NETL
NSTL
万方数据