scholarly journals A potential new frost heave mechanism in high-speed railway embankments

Géotechnique ◽  
2014 ◽  
Vol 64 (2) ◽  
pp. 144-154 ◽  
Author(s):  
D. SHENG ◽  
S. ZHANG ◽  
F. NIU ◽  
G. CHENG
Keyword(s):  
High Speed ◽  
Frost Heave ◽  
High Speed Railway

A deep learning forecasting method for frost heave deformation of high-speed railway subgrade

2021 ◽  
pp. 103265
Author(s):  
Jing Chen ◽  
Anyuan Li ◽  
Chunyan Bao ◽  
Yanhua Dai ◽  
Minghao Liu ◽  
...  
Keyword(s):  
Deep Learning ◽  
High Speed ◽  
Frost Heave ◽  
High Speed Railway ◽  
Forecasting Method

Assessing the effects of subgrade frost heave on vehicle dynamic behaviors on high-speed railway

2019 ◽  
Vol 158 ◽  
pp. 95-105 ◽  
Author(s):  
Xiaopei Cai ◽  
Yanke Liang ◽  
Tao Xin ◽  
Chaozhi Ma ◽  
Haoyu Wang
Keyword(s):  
High Speed ◽  
Frost Heave ◽  
Vehicle Dynamic ◽  
High Speed Railway ◽  
Dynamic Behaviors

New insights into the frost heave behavior of coarse grained soils for high-speed railway roadbed: Clustering effect of fines

2019 ◽  
Vol 167 ◽  
pp. 102863 ◽  
Author(s):  
Wei She ◽  
Luansu Wei ◽  
Guotang Zhao ◽  
Guotao Yang ◽  
Jinyang Jiang ◽  
...  
Keyword(s):  
High Speed ◽  
Coarse Grained ◽  
Frost Heave ◽  
High Speed Railway ◽  
Clustering Effect

Delamination frost heave in embankment of high speed railway in high altitude and seasonal frozen region

2018 ◽  
Vol 153 ◽  
pp. 25-32 ◽  
Author(s):  
X.Y. Wu ◽  
F.J. Niu ◽  
Z.J. Lin ◽  
J. Luo ◽  
H. Zheng ◽  
...  
Keyword(s):  
High Altitude ◽  
High Speed ◽  
Frost Heave ◽  
High Speed Railway

scholarly journals The mechanism analysis of micro frost heave coarse-grained filling material in the high-speed railway

2016 ◽  
Vol 2 (47) ◽  
pp. 1660-1663 ◽  
Author(s):  
Yang-sheng Ye ◽  
De-goui Cai ◽  
Hong-ye Yan ◽  
Jian-ping Yao ◽  
Qian-li Zhang ◽  
...  
Keyword(s):  
High Speed ◽  
Coarse Grained ◽  
Frost Heave ◽  
Filling Material ◽  
Mechanism Analysis ◽  
High Speed Railway

Possible frost heave mechanisms in an unsaturated high-speed railway formation

2014 ◽  
pp. 3-14 ◽  
Author(s):  
Daichao Sheng ◽  
Guotang Zhao ◽  
Sheng Zhang ◽  
Fujun Niu
Keyword(s):  
High Speed ◽  
Frost Heave ◽  
High Speed Railway

Study on Frost-Resistant Experiments of Concrete for High Speed Railway Pile Foundation Protection

2010 ◽  
Vol 150-151 ◽  
pp. 603-607
Author(s):  
Fu Hai Li ◽  
Yue Zhong Ye ◽  
Yan Ke Yang
Keyword(s):  
High Speed ◽  
Steel Pipe ◽  
Frost Heave ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Steel Pipes ◽  
Concrete Piles ◽  
Bridge Steel ◽  
Better Than ◽  
Durability Of Concrete

. In order to protect cast-in place piles of high speed railway bridge, steel pipes which used to be used during the work progress are left forever to increase the durability of concrete piles. The relative experiments are carried out indoor. On one hand, steel pipe can separate the concrete from exterior environment; on the other hand, under the condition of freezing, steel pipe can produce hoop effect to the concrete which can reduce crack expansion stress because of frost heave. Mass loss, relative dynamic modulus of elasticity and strength about steel pipe concrete are studied. The conclusion shows that the durability of concrete piles with steel pipe protection is much better than common concrete piles with no protection.

scholarly journals Studies for Frost Heave Characteristics and the Prevention of the High-Speed Railway Roadbed in the Zoige Wetland, China

2021 ◽  
Vol 9 ◽  
Author(s):  
Fujun Niu ◽  
He Hu ◽  
Minghao Liu ◽  
Qinguo Ma ◽  
Wenji Su
Keyword(s):  
Water Content ◽  
High Speed ◽  
Cold Climate ◽  
Coarse Grained ◽  
Frost Heave ◽  
Tibet Plateau ◽  
High Speed Railway ◽  
Fines Content ◽  
Zoige Wetland ◽  
Flat Ground

The Xining–Chengdu high-speed railway crosses the Zoige Wetland, located on the northeast edge of the Qinghai-Tibet Plateau and the upper reaches of the Yellow River. The cold climate and frost-heave-sensitive subgrade soil cause a large frost heave deformation of the roadbed, threatening the safety of trains. This article systematically studied the ground temperature development, frost heave characteristics, soil water content, and groundwater level variations by field investigation and monitoring. The maximum frost heave deformations of the natural flat ground and hillslope reached 25.64 and 3.17 mm, respectively, and this significant discrepancy was mainly caused by the groundwater supply conditions. Future roadbed stability on the flat ground may be compromised by frost heave deformation. To solve this problem, contrasting indoor tests were conducted to analyze the frost heave characteristics of natural ground clay and replacement coarse-grained soil (CGS). It was shown that the absorbed external water mainly changed into dispersed pore ice in the freezing CGS, while it mainly changed into the layered ice lens in the freezing clay. Further tests showed that the frost susceptibility of the CGS was proportional to the fines content and initial water content. The poorly graded CGS had weaker frost susceptibility than the well-graded CGS. The results suggest that anti-frost methods should be fully considered, including strict control of fines content and water content, prioritizing the use of poorly graded filling, and disruption of local water accumulation in the filling layer.

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