基于弹性力学考虑冰水相变过程下多年冻土冻胀系数与冻胀率之间的关系

doi:10.13722/j.cnki.jrme.2018.0411

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (239 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要在多年冻土热–力耦合数值模拟中，冻胀系数是二场耦合的关键热物性参数。现阶段大多学者均以负的热膨胀系数作为冻胀系数，仅考虑温度的变化，但冻胀系数实则受多种因素影响。以弹性力学为理论依据，在不考虑水分迁移引起土体冻胀的情况下，研究原位水分冻结引起冻胀过程中土体冻胀率与冻胀系数之间的关系。综合考虑温度、土体泊松比以及不同土质在冻结状态下冰水相变速率等影响因素，推导出二者之间的关系公式。结合青藏高原清水河地区土质的实测基本物理参数，利用本文推导的公式计算冻胀系数并与传统计算方法相比较。结果表明考虑多因素的计算方法误差更小。能够在数值模拟中更准确地模拟土体由于原位水分冻结引起的冻胀过程。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王贺
	郭春香
	吴亚平
	蒋代军

关键词 ：土力学, 冻土, 弹性力学, 冻胀率, 冻胀系数, 冰水相变

Abstract：In the numerical simulation of the thermal-force coupling of permafrost soils，the frost expansion coefficient is the key thermal physical parameter. At present，the negative thermal expansion coefficient is taken by most scholars as the frost expansion coefficient，and only the change of the temperature is considered. However，the frost expansion coefficient is actually affected by many factors. Based on the theory of elastic mechanics and without considering the frost heave caused by water migration，the relationship between the frost heave rate and the frost heave coefficient of soil body during freezing process caused by in-situ water freezing was studied. Taking into account the factors such as the temperature，the poisson ratio of soil body and the phase change rate of ice water under freezing state of different soil materials，a formula between the frost heave rate and the frost heave coefficient was derived. Comparisons between the developed method and the traditional calculation method were performed based on the basic physical parameters of soil mass measured in Qingshuihe area of Qinghai—Tibetan Plateau. As is shown by the results，the method considering multiple factors has smaller errors and can be used to accurately simulate the frost heaving process caused by water freezing in situ.

Key words： soil mechanics frozen soil elastic mechanics frost-heaving ratio frost-heaving coefficient ice water phase transformation

引用本文:

王贺，郭春香，吴亚平，蒋代军. 基于弹性力学考虑冰水相变过程下多年冻土冻胀系数与冻胀率之间的关系[J]. 岩石力学与工程学报, 2018, 37(12): 2839-2845.
WANG He，GUO Chunxiang，WU Yaping，JIANG Daijun. Relationship between the frost-heaving coefficient and the frost-heaving#br# rate of permafrost soils considering the ice water phase transformation#br# based on elastic mechanics. , 2018, 37(12): 2839-2845.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2018.0411 或 http://www.rockmech.org/CN/Y2018/V37/I12/2839

[11]	马巍，王大雁. 冻土力学[M]. 北京：科学出版社，2014：41-62.(MA Wei，WANG Dayan. Mechanics of frozen soil[M]. Beijing：Science Press，2014：41-62.(in Chinese))
[1]	李洪升，刘增利，李南生. 基于冻土水分温度和外荷载相互作用的冻胀模式[J]. 大连理工大学学报，1998，38(1)：33-37.(LI Hongsheng，LIU Zengli，LI Nansheng. Frost heave pattern based on frozen soil moisture temperature and external load interaction[J]. Journal of Dalian University of Technology，1998，38(1)：33-37.(in Chinese))
[9]	程佳，赵相卿，杨晓明. 青藏铁路多年冻土区典型土样冻胀率特性研究[J]. 冰川冻土，2011，33(4)：863-866.(CHENG Jia，ZHAO Xiangqing，YANG Xiangming. Research of frost-heaving ratio of typical soil samples from permafrost regions of golmud-lhasa railway[J]. Journal of Glaciology and Geocryology，2011，33(4)：863-866.(in Chinese))
[14]	王正中，牟声远，牛永红，等. 横观各向同性冻土弹性常数及强度预测[J]. 岩土力学，2008，29(增1)：475-480.(WANG Zhengzhong，MOU Shengyuan，NIU Yonghong，et al. Elastic constants and strength prediction of transversely isotropic frozen soils[J]. mechanics of Geotechnical，2008，29(Supp.1)：475-
[15]	王正中，张长庆，沙际德. 冻土与扩大台基相互作用的有限元分析[J]. 西北农业大学学报，1998，26(5)：12-17.(WANG Zhongzheng，ZHANG Changqing，SHA Jide. Finite element analysis of the interaction between permafrost and expanded platform[J]. Journal of Northwest Agricultural University，1998，26(5)：12-17.(in Chinese))
[18]	张国光. 多年冻土区浅埋建筑物水平冻胀力的理论研究[硕士学位论文][D]. 北京：北京交通大学，2014.(ZHANG Guoguang. Theoretical study on horizontal frost heave force of shallow buried buildings in permafrost regions[M. S. Thesis][D]. Beijing：Beijing Jiaotong University，2014.(in Chinese))
[7]	周家作，韦昌富，李东庆，等. 饱和粉土冻胀过程试验研究及数值模拟[J]. 岩石力学与工程学报，2017，36(2)：485-495. (ZHOU Jiazuo，WEI Changfu，LI Dongqing，et al. Experimental study and numerical simulation to the process of frost heave in saturated silt[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(2)：485-495.(in Chinese))
[16]	张茹，王正中，牟声远，等. 基于横观各向同性冻土的U形渠道冻胀数值模拟[J]. 应用基础与工程科学学报，2010，18(5)：773-783.(ZHANG Ru，WANG Zhengzhong，MOU Shengyuan，et al. Numerical simulation of frost heave of u-shaped channel based on trans-versely isotropic frozen soil[J]. Journal of Applied Basic and Engineering Sciences，2010，18(5)：773-783.(in Chinese))
[2]	刘鸿绪. 冻胀量与冻胀力关系分析[J]. 低温建筑技术，1982，(1)：59-61.(LIU Hongxu. Analysis of the relationship between frost heave and frost heave[J]. Low Temperature Construction Technology，1982，(1)：59-61.(in Chinese))
[3]	刘鸿绪，朱卫中，朱广祥，等. 再论冻胀量与冻胀力之关系[J].冰川冻土，2001，23(1)：63-66.(LIU Hongxu，ZHU Weizhong，ZHU Guangxiang，et al. Discussion on the relationship between frost heave and frost heave force[J]. Journal of Glaciology and Geocryology，2001，23(1)：63-66.(in Chinese))
[12]	王正中，沙际德，蒋允静，等. 正交各向异性冻土与建筑物相互作用的非线性有限元分析[J]. 土木工程学报，1999，32(3)：55-60.(WANG Zhongzheng，SHA Jide，JIANG Yunjing，et al. Nonlinear finite element analysis of the interaction of orthotropic frozen soil with buildings[J]. Journal of Civil Engineering Society，1999，32(3)：55-60.(in Chinese))
[13]	李超. 弧底梯形混凝土衬砌渠道冻胀力学模型及数值模拟[硕士学位论文][D]. 石河子：石河子大学，2010.(LI Chao. Mechanical model and numerical simulation of frost heave of trapezoidal concrete lining channel[M. S. Thesis][D]. Shihezi：Shihezi University，2010.(in Chinese))
[5]	周扬. 冻土冻胀理论模型及冻胀控制研究[博士学位论文][D]. 徐州：中国矿业大学，2009.(ZHOU Yang. Study on frost heave model and frost heave control of frozen soils[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2009.(in Chinese))
48	0.(in Chinese))
[4]	徐学祖，何平，张健明. 土体冻结和冻胀研究的新进展[J].冰川冻土，1997，19(3)：280-283.(XU Xiaozhu，HE Ping，ZHANG Jianming. New advances in research on soil freezing and frost heave[J]. Journal of Glaciology and Geocryology，1997，19(3)：280-283.(in Chinese))
[6]	耿琳. 土的冻胀力学模型及冻胀变形数值模拟[博士学位论文][D]. 哈尔滨：哈尔滨工业大学，2016.(GENG Lin. Mechanical model and numerical prediction on deformation of soil under the action of frost heave[Ph. D. Thesis][D]. Harbin：Harbin Institute of Technology，2016.(in Chinese))
[8]	刘泉声，黄诗冰，康永水，等. 低温饱和岩石未冻水含量与冻胀变形模型研究[J]. 岩石力学与工程学报，2016，35(10)：2 000-2 012.(LIU Quansheng，HUANG Shibing，KANG Yongshui，et al. Study of unfrozen water content and frost heave model for saturated rock under low temperature[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(10)：2 000-2 012.(in Chinese))
[10]	中华人民共和国行业标准编写组. JGJ 118—2011冻土地区建筑地基基础设计规范[S]. 北京：中国建筑工业出版社，2011. (The Professional Standards Compilation Group of People?s Republic of China. JGJ 118—2011 Code for design of foundation foundation of frozen foundation[S]. Beijing：China Construction Industry Press，2011.(in Chinese))
[17]	孙杲辰. 砼衬砌渠道冻胀破坏断裂力学模型及数值模拟研究[硕士学位论文][D]. 咸阳：西北农林科技大学，2013.(SUN Gaochen. Study on fracture mechanics model and numerical simulation of frost heave damage in concrete lining channel[M. S. Thesis][D]. Xianyang：Northwest Agriculture and Forestry University of Science and Technology，2013.(in Chinese))
[19]	吴亚平，朱元林，郭春香，等. 寒区桩基础的多场耦合分析模型及其应用[J]. 中国科学(D辑：地球科学)，2005，35(4)：378-385.(WU Yaping，ZHU Yuanlin，GUO Chunxiang，et al. Multi- field coupling analysis model of pile foundation in cold region and its application[J]. Chinese Science(Series D：Earth Science)，2005，35(4)：378-385.(in Chinese))