高强玻纤格栅在路基拓宽工程中工作性能研究  

A dissertation on application performance research of high strength glass fiber grating in roadbed widening

作　　者：马良 MA Liang(Hunan Sunshine Construction Co.,Ltd.,Changsha,Hunan 410022,China)

机构地区：[1]湖南尚上公路桥梁建设有限公司,湖南长沙410022

出　　处：《黑龙江交通科技》2018年第4期4-5,共2页Communications Science and Technology Heilongjiang

摘　　要：随着近年来高速公路快速发展,结合既有公路改造高速公路工程时有发生。路基拓宽搭接部受力及变形特性一直是工程实践关注的核心技术问题,高强格栅因具有较强的抗拉能力逐渐在路基拓宽工作中推广应用,但目前对高强格栅在路基拓宽部位的工作性能研究相对较少。为此结合某高速公路路基拓宽工程,采用数值模拟和现场测试相结合方法,对高强玻纤格栅在路基拓宽部位的工作性能进行研究。研究结果表明:路基拓宽部位采用高强玻纤格栅连接后,新旧路基差异沉降控制在5 mm以内,说明格栅与路基土耦合作用中发挥横向抗拉竖向承载功效较好。With the rapid development of expressways in recent years,the reconstruction of expressways with existing lines has occurred frequently. Subgrade widening the stress and deformation characteristics of lap has been the focus of engineering practice the core technical issues,high strength grille because of the strong tensile strength and gradually expand the work of subgrade wide application,but the current high-strength grille in the widened parts of the roadbed on the performance of the study is relatively small. In this paper,combining with a highway subgrade widening project,the combination of numerical simulation and on-site testing is used to study the performance of high-strength glass fiber grid in the widened subgrade. The results show that the difference subsidence of old and new subgrade is controlled within 5 mm when the widened parts of subgrade are connected with high-strength fiberglass grilles,which shows that the lateral tensile vertical bearing function is better in the coupling between grille and subgrade soil.

关 键 词：高速公路路基工程 高强格栅 现场测试 路基拓宽 

分 类 号：U416.1[交通运输工程—道路与铁道工程]