钢管高强混凝土柱轴向受压承载力试验研究  

Experimental Study of Bearing Capacity of Steel Tube Confined High-strength Concrete Columns Under Axial Loads

作　　者：王力尚[1] 钱稼茹[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《建筑结构》2003年第7期46-49,共4页Building Structure

基　　金：教育部博士点基金 (2 0 0 0 0 0 0 3 45 );北京市自然科学基金 (80 0 2 0 12 )

摘　　要：22根钢管高强混凝土柱的轴向受压试验结果表明 ,钢管高强混凝土短柱的轴向受压破坏为剪切破坏 ,长柱的破坏为弯曲破坏。根据试验和有关文献的结果 ,提出了混凝土强度等级不大于C80、套箍指标不大于 1 1的钢管高强混凝土柱的轴向受压承载力计算公式 。Experimental study on 22 steel tube confined high strength concrete columns was carried out under the axial compressive load.The test results showed that the short columns failed due to shear failure of core concrete,the long columns failed due to flexure.Based on the test results of this study and others,a formula for calculating the axial compressive strength of short steel tube confined high strength concrete columns,as well as the strength reduction factor for long columns are proposed.The formula and the factor are suitable for the grade of core concrete not larger than C80 and the steel tube confinement index not larger than 1.1.

关 键 词：钢管高强混凝土 轴向受压 承载力 短柱 弹性模量 

分 类 号：TU375.3[建筑科学—结构工程]