玻璃纤维增强复合材料筋-海砂混凝土路面现场车载试验及数值分析  

Field Vehicle Load Test and Numerical Analysis of GFRP Reinforced Sea Sand Concrete Pavement

作　　者：杨浩 黄靓[1] 吴曦 魏令港 YANG Hao;HUANG Liang;WU Xi;WEI Linggang(School of Civil Engineering,Hunan University,Changsha 410082,China;School of Civil Engineering,Hunan City University,Yiyang 413000,China)

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]湖南城市学院土木工程学院,湖南益阳413000

出　　处：《工业建筑》2024年第4期200-206,共7页Industrial Construction

基　　金：国家重点研发计划项目(2017YFC0703300)。

摘　　要：为研究玻璃纤维增强复合材料(GFRP)筋-海砂混凝土路面车载作用下的力学响应特征,将GFRP筋-海砂混凝土路面运用于实际工程。本研究结合项目浇筑一条17 m×98 m的GFRP筋-海砂混凝土路面进行现场车载试验,现场试验表明:改变筋材种类以及单层筋材配筋率对车载作用下路面板应变影响较小。同时,基于现场试验数据建立GFRP筋-海砂混凝土路面有限元模型进行参数敏感性分析,结果表明:有限元模型计算结果与试验数据接近,模型具有较高可靠度,改变GFRP面板筋弹性模量、GFRP纵筋间距、传力杆直径和传力杆弹性模量对GFRP筋-海砂混凝土面板最大拉应力影响较小,GFRP传力杆荷载传递性能弱于钢筋传力杆,实际工程中可通过增大GFRP筋传力杆直径来提高横缝传荷能力。In order to study the mechanical response characteristics of GFRP reinforced sea sand concrete pavement under vehicle loads,GFRP reinforced sea sand concrete pavement is applied to engineering practice.In this study,a 17 m×98 m GFRP reinforced sea sand concrete pavement was poured in the field vehicle test,and the field test showed that the change of rebar type and single-layer reinforcement ratio had little effect on the strain of the road panel under vehicle loads.At the same time,based on the field test data,the finite element model of the GFRP reinforced sea sand concrete pavement was established for parameter sensitivity analysis,and the results showed that the calculation results of the finite element model were close to the experimental data,and the model had high reliability,and the changes of the elastic modulus of GFRP panel rebars,the spacing of GFRP longitudinal rebars,the diameter of dowel bars and the elastic modulus of dowel bars had little effect on the maximum tensile stress of the GFRP reinforced sea sand concrete panel,and the load transfer performance of GFRP dowel bars was weaker than that of reforcing steel dowel bars.In actual engineering,the load transfer capacity of transverse joints can be improved by increasing the diameter of GFRP dowel bars.

关 键 词：GFRP筋 海砂混凝土 混凝土路面 试验研究 数值模拟 

分 类 号：U416.2[交通运输工程—道路与铁道工程]