广州北二环高速公路路基含水率现场测试研究  

Research on Site Measurement of Water Content in Subgrade of Guangzhou North Second Ring Expressway

作　　者：谢世有 徐国元[1] 何培勇[1,2] 龙翔 

机构地区：[1]华南理工大学土木与交通学院,广州510640 [2]广州市北二环高速公路有限公司,广州510540

出　　处：《路基工程》2016年第3期83-87,共5页Subgrade Engineering

基　　金：国家自然科学基金资助(51078151)

摘　　要：为了研究路基含水率的变化情况,以广州市北二环高速公路某段为依托,采用在路基中埋设土壤水分计和孔隙水压计的方法,对路基含水率以及孔隙水压力进行了测试研究。结果表明:路基含水率及孔隙水压随降雨条件而变化,但是不同类型路基的变化情况及幅度有所不同。因此,必须做好不同类型路基的排水设计和施工,确保其强度和稳定性。To study the change of water content of subgrade,relying on a section of Guangzhou North Second Ring Expressway,the soil moisture meter and porewater pressure gauge were buried in the subgrade to measure the water content and porewater pressure of subgrade. The results showed that the water content and porewater pressure of subgrade varied with the rainfall condition. However,the change condition and amplitude of different types of subgrade may be different. Therefore,the drainage design and construction shall be properly carried out for different types of Subgrade to ensure its strength and stability.

关 键 词：高速公路路基 含水率 土壤水分计 孔隙水压计 降雨 

分 类 号：U416.1[交通运输工程—道路与铁道工程]