摘要
根据现有钢管钢纤维混凝土的研究,对这种组合结构的轴心受压短柱、偏心受压长柱、均布荷载作用下的梁以及低周反复荷载作用下的长柱性能进行了介绍。钢纤维对钢管混凝土柱受压承载力的提高幅度不大,在钢管混凝土柱中掺入钢纤维的作用主要是提高钢管混凝土柱的延性,而不是提高其受压承载力;在钢管混凝土梁中掺入钢纤维,能改善梁受拉区的工作性能,从而提高梁的承载能力;钢纤维能提高钢管混凝土柱在水平低周反复荷载作用下的水平承载力及延性。
Based on the current analysis of steel fiber reinforced concrete-filled steel tube（SFCFT）,the properties of this structure were introduced,which concluded short columns under axial compression,long columns under eccentric axial load,rectangular beam under uniform load and long columns under combined constant axial compression and cyclic loading.Steel fiber has little effect on capacity of concrete-filled steel tube columns under compression;the main function of steel fiber is to improve the ductility of columns.Steel fiber can improve the working performance of tensile area of concrete-filled steel tube beam;thereby increase the capacity of beam.And steel fiber can increase the lateral capacity and ductility of high strength concrete-filled steel tube columns under cyclic loading.
出处
《四川建筑科学研究》
北大核心
2011年第1期67-69,共3页
Sichuan Building Science
关键词
钢管混凝土
钢纤维
延性
承载力
concrete-filled steel tube
steel fiber
ductility
capacity
