Results 31 to 40 of about 9,019 (250)

Influence of Uneven Subgrade Frost Heave on Deformation and Damage of CRTSIII Slab Track

open access: yesApplied Sciences, 2023
The problem of uneven frost heave deformation of high-speed railway subgrade in seasonal freezing areas seriously affects the service state and service life of slab track structures and threatens the safe operation of high-speed vehicles.
Hongge Wang   +5 more
doaj   +1 more source

Research on Frost Heaving Distribution of Seepage Stratum in Tunnel Construction Using Horizontal Freezing Technique

open access: yesApplied Sciences, 2022
During the horizontal freezing construction of a subway tunnel, the delay of the closure of the frozen wall occurs frequently due to the existence of groundwater seepage, which can be directly reflected by a freezing temperature field.
Mengkai Li   +4 more
doaj   +1 more source

A method of safety monitoring and measurement of overall frost heaving pressure of tunnel in seasonal frozen area

open access: yesApplied Rheology, 2023
Antifreeze design, scientific operation, and maintenance of tunnels with broken surrounding rock in seasonal frozen areas are key factors that affect the safety of tunnel.
Cui Guangyao, Xiong Yong
doaj   +1 more source

Low temperature tensile properties of line pipe steels [PDF]

open access: yes, 2015
Given the expected increase in Arctic oil and gas exploitation, there is a demand for high-strength line pipe steels able to cope with the Arctic climate. The state-of-the-art of the tensile properties of API 5L steels at low temperatures is reviewed and
De Waele, Wim   +2 more
core   +2 more sources

Predicting the frost heaving of bottom ash value for road design

open access: yesВестник СибАДИ, 2020
Introduction. Most of the researchers dealing with the use of ash and slag materials (especially in the construction) have focused on the study of their mechanical characteristics or assessment of their impact on the environment.
A. A. Lunev   +3 more
doaj   +1 more source

A Generalized Secondary Frost Heave Model

open access: yesSIAM Journal on Applied Mathematics, 1994
A generalized model for secondary frost heave is developed. Secondary frost heave arises during freezing owing to cryostatic suction effects that can increase the upward water permeation to facilitate ice-lens growth and increased heave. Nondimensionalization and scaling are used to simplify the model equations and to identify a dimensionless group ...
Fowler, A, Krantz, W
openaire   +3 more sources

Experimental study on water transfer of soil-rock mixtures under freezing action

open access: yesYantu gongcheng xuebao
The frost-heaving failure of earth-rock dam slopes is mainly caused by the combined action of sand and gravel cushion, frost heaving of dam fills and water migration.
LI Zhuo 1, 2, JIANG Xin 3, ZHANG Jixun 3, ZHAO Yu 3, WANG Yuqing 3, LU Yang 3
doaj   +1 more source

Experimental Research on Frost Heave Characteristics of Gravel Soil and Multifactor Regression Prediction

open access: yesAdvances in Materials Science and Engineering, 2018
Gravel soil is usually considered to be insensitive to frost heave. However, many frost heave deformations of foundation in seasonal frozen region indicate that gravel soil may also produce frost heave under certain special conditions. In order to gain a
Xiaoyong Long   +3 more
doaj   +1 more source

Frost heaving of foundation pit for seasonal permafrost areas

open access: yesИнженерно-строительный журнал, 2019
Frost heaving can cause support structures to crack and even instability of the foundation pit. This paper describes the frost heaving features of the steel pile pre-stressed tendon composite foundation pit support system (SPPTCFPSS). As a combined rigid–
Guo Chao, Zhengran Lu
doaj   +1 more source

Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions

open access: yesSoils and Foundations, 2023
The Manzhouli 500 kV electrical transmission line travels more than 218 km through seasonal frozen regions, which result in many freezing soil engineering problems with respect to the transmission tower foundations.
Liang Tang   +3 more
doaj   +1 more source

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