Compressibility influence rule of subgrade soil in cold area under the condition of freeze-thaw cycles

被引：0

作者：

Ding F. ^{[1
]}

Cai L. ^{[2
]}

Ding W. ^{[1
,2
]}

Cao S. ^{[1
,2
]}

Meng D. ^{[1
,2
]}

机构：

[1] Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an Shaanxi

[2] Air Force First Construction Installation Engineering Corps, Beijing

来源：

Journal of Computational and Theoretical Nanoscience | 2016年 / 13卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Analysis Rules; Compressibility; Freeze-Thaw Cycles; Freezing Temperature; Thawing Settlement Coefficient; Water Content;

D O I：

10.1166/jctn.2016.5022

中图分类号：

学科分类号：

摘要：

Through determination of the thawing settlement coefficient of remoulded soil specimens with different water contents and different freezing temperature under different number of freeze-thaw cycles, the paper tries to find the main factors and rules influencing the thawing settlement coeffi-cient changes. Experiments found that the most adverse condition of frozen soil thawing settlement should be one cycle of freeze-thaw cycle from the third time to the sixth time. So it is unsafe to perform design according to thawing settlement coefficient obtained by one melting in the project, which would also bring some hidden troubles to the normal work of future subgrade. Based on indoor experimental data, the paper draws the relationship curve between relative compressibility and pressure, finds the influence rule of freeze-thaw cycle on the compressibility changes of thawed soil, and puts forward the concept of compression modulus loss, to measure the damage of soil compressibility by freeze-thaw cycles. © 2016 American Scientific Publishers All rights reserved.

引用

页码：1124 / 1129

页数：5

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