FRP-混凝土-钢管组合方柱偏心受压性能研究  

Behavior of square FRP-concrete-steel tube combined columns under eccentric compression

作　　者：王勇智[1] 王代[1,2] 雷庆强 李趁趁[2] 

机构地区：[1]中州大学工程技术学院,河南郑州450044 [2]郑州大学新型建材与结构研究中心,河南郑州450002 [3]中交第一公路工程局桥隧工程有限公司,河北保定074000

出　　处：《河北工业大学学报》2015年第4期106-109,共4页Journal of Hebei University of Technology

基　　金：国家自然科学基金(50579068);郑州市科技攻关项目(112PPTGY251-6)

摘　　要：通过9根方柱的偏心受压试验,重点研究偏心距、FRP层数对FRP-混凝土-钢管组合方柱性能的影响.结果表明:随着偏心距的增大,试件的极限承载力下降.相同偏心距下,随着轴向FRP布层数的增加,试件极限承载力有所增大.偏心距对试件的极限承载力、侧向挠度和组合柱受压侧轴向应变的影响显著.轴向FRP布层数对试件的侧向挠度和组合柱受拉侧轴向应变的影响较小.Through the experiments of nine FRP-concrete-steel tube composite square columns subjected to axial eccentric compression, the effects of the eccentricity and the FRP layers outside the column on the axial compression behavior were investigated. The test results show that the ultimate bearing-capacity of specimens appears to decrease with the increase of eccentricity. And the bearing-capacity of specimens with the same eccentricity appears to slightly approve as the axial FRP layers increase. The eccentricity has significant influence on the bearing-capacity, lateral deflection and the compression-side axial strain of composite columns. The axial FRP layers have little effect on the lateral deflection and the tensionside axial strain of composite columns.

关 键 词：FRP 偏心荷载 轴压试验 组合柱 方形截面 

分 类 号：TU398.9[建筑科学—结构工程]