用变形模量计算黄土自重湿陷量方法探讨  

Exploring on Calculation of Self-weight Collapse Settlement of Loess Taking Advantage of Deformation Modulus

作　　者：井彦林[1] 闫祥 王超[1,2] 田威 张银洲[3] JING Yanlin;YAN Xiang;WANG Chao;TIAN Wei;ZHANG Yinzhou(School of Civil Engineering,Chang an University,Xi an Shaanxi 710061,China;The No.1 Hydropower Corps of the People s Armed-Police,Nanning Guangxi 530028,China;China Coal Xi an Design&Engineering Co.Ltd.,Xi an Shaanxi 710054,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]中国人民武装警察部队水电第一总队,广西南宁530028 [3]中煤西安设计工程有限责任公司,陕西西安710054

出　　处：《铁道建筑》2018年第10期73-77,共5页Railway Engineering

基　　金：国家自然科学基金(41472267)

摘　　要：采用室内试验计算法与现场试坑浸水试验所得到的黄土自重湿陷量存在较大差异,故提出依据变形模量计算黄土自重湿陷量的方法,并用实际工程对该算法进行验证。用变形模量计算黄土自重湿陷量为333. 6 mm,野外试坑浸水试验的实测值为380. 5 mm,两者接近。从工程的角度而言误差较小,说明该计算方法有一定的理论价值。自重湿陷底界深度是计算中的重要参数,其测试比较困难,论文对其研究方法提出了建议。The self-weight collapse settlement of the loess based on the lab test is different from the result of the in-situ soaking test.Thus,a method based on deformation modulus is proposed in this paper,and this method is verif ied through the application into actual engineering program.The self-weight collapse settlement of the loess based on deformation modulus is 333.6 mm while that measured based on the soaking f ield test is 380.5 mm.These two values are close.From the aspect of engineering,the error is small,verifying the theoretical value of the method.The lower limit depth of the collapsible loess is an important parameter and it is very diff icult to test.Suggestion on the research on this parameter is provided in this paper.

关 键 词：路基工程 自重湿陷量 变形模量 黄土 计算深度 

分 类 号：U213.1[交通运输工程—道路与铁道工程]