CFRP层数对约束海砂混凝土圆柱轴压性能的影响  

Effect of CFRP layers on the axial compression performance of confined sea-sand concrete cylinders

作　　者：张学磊 Zhang Xuelei(China Building Materials Industry Geologic Exploration Genter Liaoning Branch,Shenyang Liaoning 110004,China)

机构地区：[1]中国建筑材料工业地质勘查中心辽宁总队,辽宁沈阳110004

出　　处：《山西建筑》2025年第9期68-71,共4页Shanxi Architecture

基　　金：辽宁省自然科学基金指导项目(项目编号:20180550297)。

摘　　要：为研究CFRP对约束海砂混凝土轴向力学性能的改善效果,基于1层、2层CFRP约束海砂混凝土室内试验值,利用ABAQUS软件进行数值仿真验证;通过比较分析得到了可靠的CFRP层数及海砂混凝土材料数值模拟参数,进而模拟分析了3层、4层及5层CFRP对约束海砂混凝土圆柱轴向力学性能的影响。结果表明:4层CFRP约束海砂混凝土无侧限抗压强度最大,3层约束海砂混凝土无侧限抗压强度最小,5层CFRP约束海砂混凝土延性最好,3层的延性最差;增加CFRP层数在一定程度上可以有效提高海砂混凝土的无侧限抗压强度,但增加CFRP层数在一定范围内对约束海砂混凝土的延性性能改善效果不是很明显。The effect of CFRP on the improvement of axial mechanical properties of sea-sand concrete was studied.The numerical simulation was carried out by using ABAQUS based on the laboratory test values of one-layer and two-layer CFRP-confined sea-sand concrete.Through comparative analysis,reliable CFRP layers and numerical simulation parameters of sea-sand concrete materials are obtained,and then the effects of three,four and five-CFRP layer on the axial mechanical properties of constrained sea-sand concrete columns are simulated and analyzed.The unconfined compressive strength of four-layer CFRP-confined sea-sand concrete is the largest,while the unconfined compressive strength of three-layer confined sea-sand concrete is the smallest.The ductility of five-layer CFRPconfined sea-sand concrete was the best,and the worst with three-layer.The increases in the number of CFRP layers can effectively improve the unconfined compressive strength of sea-sand concrete,while increases in the number of CFRP layers is not obviously effective in improving the ductility performance of sea-sand concrete.

关 键 词：海砂混凝土 FRP ABAQUS 抗压性能 

分 类 号：TU377.9[建筑科学—结构工程]