多腔T形钢管混凝土柱偏压性能试验研究
Experimental study on eccentric compression behavior of multi cavity T-shaped concrete-filled steel tubular columns
袁健 1潘智桓 1王靖普 1胡壹1
作者信息
- 1. 中南林业科技大学土木工程学院,长沙 410004
- 折叠
摘要
为研究偏心荷载作用下多腔T形钢管混凝土柱的力学性能,开展1 根普通T形钢管混凝土柱和5 根多腔T形钢管混凝土柱在不同偏心距下的轴心或偏心受压试验,主要考察偏心距和高宽比对多腔T形钢管混凝土柱受压性能的影响.试验结果表明,与含钢率基本相当的T形钢管混凝土柱相比,采用多腔T形截面能更好地发挥钢管对核心混凝土的约束作用,且具有更高的承载力和更好的变形性能.多腔T形钢管混凝土柱的极限承载力随偏心距的增大而降低;当试件高度由 720mm增大至 1 800mm时,多腔T形钢管混凝土柱的极限承载力呈降低趋势,但试件未出现失稳破坏特征.
Abstract
In order to study the mechanical behavior of multi cavity T-shaped concrete-filled steel tubular columns under eccentric load,one ordinary T-shaped concrete-filled steel tubular column and five multi cavity T-shaped concrete-filled steel tubular columns were tested under axial or eccentric compression loading with different eccentricities,and the influence of eccentricity and height-width ratio on the compression behavior of multi cavity T-shaped concrete-filled steel tubular columns were mainly investigated.The test results show that compared with T-shaped concrete-filled steel tubular column with similar steel content,using the multi cavity T-shaped section can better exert the confinement of steel tubes to the core concrete,and has higher bearing capacity and better deformation performance.The ultimate bearing capacity of multi cavity T-shaped concrete-filled steel tubular columns decrease with the increase of eccentricity.When the height of the specimen increases from 720mm to 1 800mm,the ultimate bearing capacity of the multi cavity T-shaped concrete-filled steel tubular column shows a decreasing trend,but the specimen does not exhibit any unstable failure characteristics.
关键词
钢管混凝土柱/多腔T形/偏心距/受压性能Key words
concrete-filled steel tubular column/multi cavity T-shaped/eccentricity/compression behavior引用本文复制引用
出版年
2024
NETL
NSTL
万方数据