建筑钢结构进展2018，Vol.20Issue(2)：74-78,109,6.DOI:10.13969/j.cnki.cn31-1893.2018.02.010
脱空缺陷对长期荷载作用下圆钢管混凝土构件静力性能的影响研究
Study on the Effect of Gap on the Static Behavior of Circular Concrete-Filled Steel Tubular (CFST) Members Under Long-term Loading
摘要
Abstract
The gap between steel and concrete core is found in some concrete-filled steel tubular (CFST) structures in the inspection.However,the effect of gap on the behavior of CFST structures under long-term loading is yet not clear.Therefore,this paper carries out a series of tests on the circular CFST specimens with gap under long-term loading.The creep deformation of core concrete and the ultimate of CFST specimens are measured.The measured data shows the gap has influence on creep of concrete core and ultimate capacity of the whole specimens.Based on the test results,the effect of gap on CFST members under long-term loading is evaluated,and the results of this paper are used in practical engineering to evaluate the safety of CFST bridges.This paper can provide a reference for the detection and assessment of CFST arch bridge structures.关键词
钢管混凝土/脱空/长期荷载/徐变/极限承载力Key words
concrete-filled steel tube (CFST)/gap/long-term loading/creep deformation/ultimate capacity分类
建筑与水利引用本文复制引用
林挺伟..脱空缺陷对长期荷载作用下圆钢管混凝土构件静力性能的影响研究[J].建筑钢结构进展,2018,20(2):74-78,109,6.基金项目
福建省财政厅科技专项资助项目(K81600002) （K81600002）
