FRP约束钢管混凝土长柱承载力研究  

STUDY ON THE BEARING CAPACITY OF FRP-CONFINED LONG CONCRETE FILLED STEEL TUBULAR COLUMN

作　　者：于峰[1,2] 武萍[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]安徽工业大学建筑工程学院,马鞍山243002

出　　处：《玻璃钢／复合材料》2011年第4期60-62,共3页Fiber Reinforced Plastics/Composites

基　　金：国家自然科学基金(51008001);西部建筑科技国家重点实验室(筹)开放研究基金资助(10KF03)

摘　　要：已有研究表明,钢管混凝土柱和FRP约束混凝土柱承载力的计算方法不适用于FRP约束钢管混凝土柱承载力的计算。为研究FRP约束钢管混凝土长柱的承载力,本文以钢管约束效应系数ξs和FRP约束效应系数ξf为主要参数,考虑混凝土强度等级对FRP约束钢管混凝土柱承载力提高效果的调整系数,建立了FRP约束钢管混凝土短柱承载力的计算模型。在此基础上,分别引入钢管混凝土稳定系数φs和FRP约束混凝土柱稳定系数φf,建立FRP约束钢管混凝土长柱的承载力计算模型。并将模型的计算结果与试验数据进行比较。Existing research results show that the calculating method of concrete filled steel tube and FRP-confined concrete are not applicable to predict the bearing capacity of FRP-confined concrete filled steel tubular column.In order to study the bearing capacity of FRP-confined concrete filled steel tubular long column,this paper takes the confinement effect coefficient of steel tube ξs and the confinement effect coefficient of FRP ξf as main parameter,the adjusted coefficient of concrete strength is well considered,and the calculating model of the bearing capacity for FRP-confined concrete filled steel tubular short column is established.Based on the proposed model,the stability coefficient of concrete filled steel tube φs and FRP-confined concrete column φf are respectively introduced,then the calculating model of bearing capacity for FRP-confined concrete filled steel tubular long column is established.The comparison between the calculating results and test data are also carried out.

关 键 词：FRP 钢管混凝土 承载力 稳定系数 约束 

分 类 号：TB33[一般工业技术—材料科学与工程]