[1]荣广秋,王淼,孟上九,等.季冻区典型土类冻胀特性试验研究[J].自然灾害学报,2020,29(02):044-53.[doi:10.13577/j.jnd.2020.0205]
 RONG Guangqiu,WANG Miao,MENG Shangjiu,et al.Experimental study on frost heaving characteristics of typical soils in seasonal frozen area[J].,2020,29(02):044-53.[doi:10.13577/j.jnd.2020.0205]
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季冻区典型土类冻胀特性试验研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
29
期数:
2020年02期
页码:
044-53
栏目:
出版日期:
2020-04-28

文章信息/Info

Title:
Experimental study on frost heaving characteristics of typical soils in seasonal frozen area
作者:
荣广秋1 王淼12 孟上九123 孙义强2
1. 哈尔滨理工大学 建筑工程学院, 黑龙江 哈尔滨 150080;
2. 中国地震局工程力学研究所, 黑龙江 哈尔滨 150080;
3. 佳木斯大学, 黑龙江 佳木斯 154007
Author(s):
RONG Guangqiu1 WANG Miao12 MENG Shangjiu123 SUN Yiqiang2
1. College of Civil Engineering and Architecture, Harbin University of Science and Technology, Harbin 150080, China;
2. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China;
3. Jiamusi University, Jiamusi 154007, China
关键词:
季冻土冻胀试验封闭系统冻胀率
Keywords:
seasonal frozen soilfrost heave testclosed systemfrost heave ratio
分类号:
TU44;X43;X9
DOI:
10.13577/j.jnd.2020.0205
摘要:
冻胀是季冻区工程常见灾害,为了研究季冻区不同土类的冻胀特性,本文选取3种季冻土—黏土、粉质黏土和分散土,基于单向冻结封闭系统,考虑含水率、干密度和土质3个因素,采用单因素冻胀试验设计方法,给出了3种土类冻胀的特性。结果表明:随含水率的增大,3种土的冻胀率随之增大而后波动较小,粉质黏土的冻胀效应最强,黏土次之,分散土冻胀率最小;随干密度的增大,黏土和粉质黏土的冻胀率先增大后减小,分散土的冻胀率则不断增大;多数情况下,3种土类冻胀率均在冻结温度-10℃左右达到最大值。
Abstract:
Frost heaving is a common disaster in the seasonal frozen area. In order to study the frost heaving characteristics of different soil types in the seasonal frozen area, basing on the closed system and considering three factors which are water content, dry density and the types of soil, using the single factor frost heave test design method, this paper give three types of soil which are clay, silty clay and dispersed soil frost heave characteristics. The results show that with the increase of water content, the frost heave rates of the three types of soil increase and then fluctuated less. The frost heave effect of silty clay is the strongest, the clay is the second, and the frost heave rate ofthe dispersed soil is the smallest. With the increase of dry density, the frost heave rates of clay and silty clay increase first and then decrease, and the frost heave rate of dispersed soil increases continuously. In most cases, the frost heaving rates of the three types of soil reach the maximum at freezing temperature of -10℃.

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备注/Memo

备注/Memo:
收稿日期:2019-08-09;改回日期:2019-09-03。
基金项目:黑龙江省普通高校基本科研业务费专项资金资助(LGYCJC038);黑龙江省自然科学基金项目(E2017064,ZD2019E009);国家自然科学基金项目(51378164);中国地震局工程力学研究所基本科研业务费专项资助项目(2018D12)
作者简介:荣广秋(1994-),女,硕士研究生,主要从事季节冻土冻胀试验与模拟方向的研究.E-mail:rgq369123@163.com
通讯作者:王淼(1990-),男,讲师,博士,主要从事土动力学与季冻土试验技术方向的研究.E-mail:jyllwm1990@126.com
更新日期/Last Update: 1900-01-01