Study on thermal-state variation of high-grade highway embankment under different pavement conditions

doi:10.3724/SP.J.1226.2021.21026.

Sciences in Cold and Arid Regions ›› 2021, Vol. 13 ›› Issue (5): 419–429.doi: 10.3724/SP.J.1226.2021.21026.

• • 上一篇

收稿日期:2021-04-20 接受日期:2021-09-14 出版日期:2021-10-31 发布日期:2021-12-03

Study on thermal-state variation of high-grade highway embankment under different pavement conditions

QingZhi Wang¹(),AnHua Xu²,KeJin Wang³

^1.School of Civil Engineering, Qinghai University, Xining, Qinghai 810016, China
^2.Qinghai Communications Technical College, Xining, Qinghai 810016, China
^3.Qinghai Transportation Holding Group Co. LTD, Xining, Qinghai 810016, China

Received:2021-04-20 Accepted:2021-09-14 Online:2021-10-31 Published:2021-12-03
Contact: QingZhi Wang E-mail:wangqingzhi87@qhu.edu.cn
Supported by:
the National Natural Science Foundation of China (Nots. 41801046, 42161026), the Natural Science Foundation of Qinghai Province(2021-ZJ-716);the Transportation Science and Technology Project of Qinghai Province(2019-06 & 2018-02)

摘要/Abstract

Abstract:

The research shows that the selection of pavement type is very important for the thermal stability of high-grade highway embankment in permafrost regions because of the different solar absorption rates between asphalt concrete and asphalt concrete pavement. In this paper, the common embankment of high-grade highway in permafrost regions is selected as the research object to study the influence of asphalt concrete and cement concrete pavement on the embankment temperature, freeze-thaw cycle process and the change law of the permafrost table, which provides a basis for the use of reasonable pavement materials in permafrost regions.

Key words: high-grade highway embankment, pavement, thermal-state, permafrost table

. [J]. Sciences in Cold and Arid Regions, 2021, 13(5): 419–429.

QingZhi Wang,AnHua Xu,KeJin Wang. Study on thermal-state variation of high-grade highway embankment under different pavement conditions[J]. Sciences in Cold and Arid Regions, 2021, 13(5): 419–429.

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Variation	Asphalt concrete pavement		Cement concrete pavement
Variation	Shady-shoulder	Sunny-shoulder	Shady-shoulder	Sunny-shoulder
Average temperature (℃)	0.71	1.51	0.96	1.35
Amplitude (℃)	9.21	9.03	9.71	10.91

Variation	Asphalt concrete pavement		Cement concrete pavement
Variation	Sunny-shoulder	Shady-shoulder	Sunny-shoulder	Shady-shoulder
Average temperature (°C)	0.29	1.51	0.25	1.29
Amplitude (°C)	3.41	4.01	3.52	4.88

Item	Natural ground	Embankment	Shady-shoulder	Center	Sunny-shoulder
Degradation rate (cm/a)	0.075	asphalt concrete pavement	0.21	0.28	0.32
Degradation rate (cm/a)	0.075	cement concrete pavement	0.23	0.31	0.33

Study on thermal-state variation of high-grade highway embankment under different pavement conditions

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