Field Test Study on Frost-Heave of Subgrade in Seasonal Frozen Region along Haerbin-Dalian Passenger Dedicate Line

被引：1

作者：

Hou, Jinfang ^{[1
]}

Wang, Rongli ^{[1
]}

Feng, Jun ^{[1
]}

机构：

[1] PRC, Minist Commun, Key Lab Geotechn Engn Tianjin, CCCC Tianjin Port Engn Inst Ltd,Key Lab Port Geot, Tianjin, Peoples R China

来源：

CONSTRUCTION AND URBAN PLANNING, PTS 1-4 | 2013年 / 671-674卷

关键词：

Soil Temperature; Settlement; Water Content; Subgrade; Seasonal Frozen Region; Passenger Dedicate Line;

D O I：

10.4028/www.scientific.net/AMR.671-674.45

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The new constructing railway Haerbin-Dalian Dedicate Line runs through the typical seasonal frozen region. For the purpose of estimating the quality of subgrade construction, a field test was played. Placed the monitoring instrument and measure the soil temperature, settlement and soil pressure etc.. The monitoring data shows that the change of soil temperature is less than the environment temperature. The maximum frost depth is 1.66m. In this depth, the fine-grained soil with high frost-heave characteristic should not be as the subgrade. The effective measure to prevent the rain percolated through the subgrade is important. And the filling of subgrade should be constructed strictly according to the maximal degree of compaction and keep the best water content. The settlement of subgrade is less than 15mm, the water content is also less than the prime frost-heave water content and the frost-heave force is very small. Thus, the construction technique subgrade is feasible.

引用

页码：45 / 49

页数：5