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Sciences in Cold and Arid Regions ›› 2015, Vol. 7 ›› Issue (4): 340–347.doi: 10.3724/SP.J.1226.2015.00340

• ARTICLES • 上一篇    

Numerical analysis of applying special pavements to solve the frost heave diseases of high-speed railway roadbedsin seasonally frozen ground regions

Chang Yuan1,2, FuJun Niu1, QiHao Yu1, XinBin Wang1, Lei Guo1,2, YanHui You1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2015-02-23 修回日期:2015-05-06 发布日期:2018-11-23
  • 通讯作者: Ph.D.,QiHao Yu, Professor of Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. No. 320, West Donggang Road, Lanzhou, Gansu 730000, China. Tel: +86-931-4967283; E-mail: yuqh@lzb.ac.cn E-mail:yuqh@lzb.ac.cn
  • 基金资助:
    The authors would like to thank the anonymous reviewers for their critical reviews and comments on drafts of this manuscript. This research was supported by the National Science and Technology Support Program (No.2014BAG05B03); the National Key Basic Research Program of China (973 Program) (No.2012CB026106), and the Program for Innovative Research Group of the Natural Science Foundation of China (No.41121061).

Numerical analysis of applying special pavements to solve the frost heave diseases of high-speed railway roadbedsin seasonally frozen ground regions

Chang Yuan1,2, FuJun Niu1, QiHao Yu1, XinBin Wang1, Lei Guo1,2, YanHui You1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-02-23 Revised:2015-05-06 Published:2018-11-23
  • Contact: Ph.D.,QiHao Yu, Professor of Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. No. 320, West Donggang Road, Lanzhou, Gansu 730000, China. Tel: +86-931-4967283; E-mail: yuqh@lzb.ac.cn E-mail:yuqh@lzb.ac.cn
  • Supported by:
    The authors would like to thank the anonymous reviewers for their critical reviews and comments on drafts of this manuscript. This research was supported by the National Science and Technology Support Program (No.2014BAG05B03); the National Key Basic Research Program of China (973 Program) (No.2012CB026106), and the Program for Innovative Research Group of the Natural Science Foundation of China (No.41121061).

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摘要： The Haerbin-Dalian Passenger Dedicated Line is the first high-speed railway constructed in the seasonally frozen ground regions of northeastern China. Frost heave diseases occurred in the first winter of its operation (between October 2012 and January 2013), and frost heave was observed mainly in the roadbed fills that were considered not susceptible to frost heave. This paper proposes applying two special pavements—black pavement and insulation-black pavement—to improve the thermal regime of the roadbed. Three numerical models of the roadbed temperature field were built based on the field conditions of the Changchun section (D3K692+840 to D3K692+860).The results show that: (1) Compared with cement pavement, black pavement and insulation-black pavement could reduce the freezing index at the roadbed surface by 37% and 64%, respectively, which could influence the maximum frozen depth; (2) the maximum frozen depths under the black pavement and insulation-black pavement were respectively 1.3-1.4 m and 1 m. Compared with cement pavement, they could reduce the maximum frozen depth by 0.4m and 0.7-0.8m, respectively, which would reduce the permitted amount of frost heave by 4 mm and 7-8 mm, which would meet the deformation limitestablished by the Code for Design on Special Subgrade of Railway; (3) the freezing periods of the black pavement and the insulation-black pavement were, respectively, approximatelyfour months and two months. Compared with cement pavement, they could reduce the freezing period by approximately 19 days and 40 days, respectively, and delay the initial freezing time by 9 days and 18 days; and (4) compared with cement pavement, black pavement and black-insulation pavement could reduce the frozen areas of roadbeds in the cold season, which suggeststhat these two special pavements could provide better thermal stability for roadbeds.

关键词: frost heave, numerical simulation, special pavement, thermal regime

Abstract: The Haerbin-Dalian Passenger Dedicated Line is the first high-speed railway constructed in the seasonally frozen ground regions of northeastern China. Frost heave diseases occurred in the first winter of its operation (between October 2012 and January 2013), and frost heave was observed mainly in the roadbed fills that were considered not susceptible to frost heave. This paper proposes applying two special pavements—black pavement and insulation-black pavement—to improve the thermal regime of the roadbed. Three numerical models of the roadbed temperature field were built based on the field conditions of the Changchun section (D3K692+840 to D3K692+860).The results show that: (1) Compared with cement pavement, black pavement and insulation-black pavement could reduce the freezing index at the roadbed surface by 37% and 64%, respectively, which could influence the maximum frozen depth; (2) the maximum frozen depths under the black pavement and insulation-black pavement were respectively 1.3-1.4 m and 1 m. Compared with cement pavement, they could reduce the maximum frozen depth by 0.4m and 0.7-0.8m, respectively, which would reduce the permitted amount of frost heave by 4 mm and 7-8 mm, which would meet the deformation limitestablished by the Code for Design on Special Subgrade of Railway; (3) the freezing periods of the black pavement and the insulation-black pavement were, respectively, approximatelyfour months and two months. Compared with cement pavement, they could reduce the freezing period by approximately 19 days and 40 days, respectively, and delay the initial freezing time by 9 days and 18 days; and (4) compared with cement pavement, black pavement and black-insulation pavement could reduce the frozen areas of roadbeds in the cold season, which suggeststhat these two special pavements could provide better thermal stability for roadbeds.

Key words: frost heave, numerical simulation, special pavement, thermal regime

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