基于改扩建工程的旧路路基湿度变化规律研究  

Study on the variation law of humidity of old road subgrade based on reconstruction and extension project

作　　者：张晓萌 姚望 徐希忠 闫翔鹏 倪广聪 陈婷婷 张正超 ZHANG Xiaomeng;YAO Wang;XU Xizhong;YAN Xiangpeng;NI Guangcong;CHEN Tingting;ZHANG Zhengchao(Shandong Transportation Institute,Shandong Jinan 250031 China;Shandong Hi-speed Company Limited,Shandong Jinan 250014 China;Don State Technical University,Russia Rostov-on-Don 344022 Russia)

机构地区：[1]山东省交通科学研究院,山东济南250031 [2]山东高速股份有限公司,山东济南250014 [3]顿河国立技术大学,俄罗斯罗斯托夫344022

出　　处：《山东交通科技》2021年第3期1-3,共3页

基　　金：国家重点研发计划项目,项目名称:道路基础设施全寿命服役性能衰变机理及预测理论,项目编号:2018YFB1600100;山东省自然科学基金项目,项目名称:基于沥青路面应变检测的碳纳米管低密度聚乙烯改性沥青混合料压阻特性规律与机理,项目编号:ZR2020QE271。

摘　　要：为了准确获取旧路路基的湿度状态,对高速公路改扩建工程中旧路全线的不同深度路基含水率和液塑限进行实测,并计算路基土的天然稠度,分析了路基湿度随深度和路线长度的空间分布规律。结果表明:旧路路基在不同深度下的路基土含水率基本不随路基的深度变化而变化;路基土最大含水率为46%,最小为11%,含水率在10%~25%区间内占比为85%;旧路路基土的天然稠度基本分布在0.8~1.4之间,保持中湿或干燥状态。In order to accurately obtain the humidity status of the old roadbed,the actual measurement of the water content and liquid plastic limit of the different depths of the old roads in the reconstruction and expansion of the expressway was carried out,and calculate the natural consistency of the roadbed soil,the spatial distribution law of subgrade humidity with depth and route length was analyzed.The result shows:the soil moisture content of the old roadbed at different depths basically does not change with the depth of the roadbed;the moisture content of subgrade soil is up to 46%,the minimum is 11%.The percentage of water content in the range of 10%~25%can reach 85%;the natural consistency of the old road subgrade soil is basically distributed between 0.8~1.4,and it is kept in the medium wet or dry state.

关 键 词：改扩建 路基 含水率 天然稠度 湿度 

分 类 号：U416.1[交通运输工程—道路与铁道工程]