不同路面结构参数下高速公路路面的受力响应  

Stress Response of Expressway Pavement Under Different Pavement Structure Parameters

作　　者：陈华 CHEN Hua(Hubei Jiaotou Yunchu Construction Management Co.,Ltd.,Shiyan,Hubei 442000,China)

机构地区：[1]湖北交投郧楚建设管理有限公司,湖北十堰442000

出　　处：《黑龙江交通科技》2024年第11期32-36,42,共6页Communications Science and Technology Heilongjiang

摘　　要：为了研究不同路面结构参数下高速公路路面的受力特征,采用数值模拟方法,分析了路基不均匀沉降对路面结构附加应力的影响,以及基层、底基层、面层参数改变对路面结构附加应力的影响,研究结果表明:(1)随着新老路基不均匀沉降的增大,路面各结构受到的最大附加应力呈线性增大。(2)在基层模量相同条件下,随着基层厚度的增大,路面结构受到的最大弯拉应力随之增大。(3)随着路面面层模量的增大,不同路面面层厚度下路面结构受到的最大弯拉应力逐渐增大。(4)在公路扩建工程中,建议对新路基采取加固措施,减少新老路基的不均匀沉降,同时路面基层和面层选取合适厚度,以防止因厚度过大导致的路面早期开裂和后期车辙问题。In order to study the stress characteristics of expressway pavement under different pavement structure parameters,the influence of uneven settlement of subgrade on additional stress of pavement structure is analyzed by numerical simulation method,the results show that:(1)With the increase of the differential settlement of the new and old roadbed,the maximum additional stress of the pavement structure increases linearly.(2)Under the condition of the same base modulus,with the increase of the base thickness,the maximum bending-tensile stress of the pavement structure increases.(3)With the increase of pavement layer modulus,the maximum bending tensile stress of pavement structure under different pavement layer thicknesses increases gradually.(4)In the highway expansion project,it is suggested to take reinforcement measures for the new subgrade,it can reduce the uneven settlement of the new and old roadbed,and select the proper thickness of the base and surface to prevent early cracking and late rutting of the pavement.

关 键 词：路面结构 路基沉降 附加应力 

分 类 号：U416.02[交通运输工程—道路与铁道工程]