Study on the sunny-shady slope effect on the subgrade of a high-speed railway in a seasonal frozen region

被引：9

作者：

Wang, QingZhi ^{[1
]}

Tai, BoWen ^{[1
]}

Liu, ZhenYa ^{[1
]}

Liu, JianKun ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China

来源：

SCIENCES IN COLD AND ARID REGIONS | 2015年 / 7卷 / 05期

基金：

中国国家自然科学基金;

关键词：

high-speed railway; sunny-shady slope effect; frost heave; temperature field;

D O I：

10.3724/SP.J.1226.2015.00513

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The temperature distributions of different parts of a subgrade were analyzed based on the results of three years of monitoring data from the Harbin-Qiqihaer Passenger Dedicated Line, a high-speed railway, including the slope toes, shoulders, and natural ground. The temperature variation with time and the maximum frozen depths showed that an obvious sunny-shady effect exists in the railway subgrade, which spans a seasonal frozen region. Development of frost heave is affected by the asymmetric temperature distribution. The temperature field and the maximum frozen depths 50 years after the subgrade was built were simulated with a mathematical model of the unsteady phase transition of the geothermal field.

引用

页码：513 / 519

页数：7