岩土力学 ›› 2022, Vol. 43 ›› Issue (4): 879-890.doi: 10.16285/j.rsm.2021.0894

• 基础理论与实验研究 • 上一篇    下一篇

多年冻土区L型挡墙水平冻胀效应计算方法与分析

董建华1, 2，吴晓磊1, 2，师利君1, 2，于小燕1, 2，何鹏飞1, 2   

  1. 1. 兰州理工大学 甘肃省土木工程防灾减灾重点实验室，甘肃 兰州 730050； 2. 兰州理工大学 西部土木工程防灾减灾教育部工程研究中心，甘肃 兰州 730050
  • 收稿日期:2021-06-15 修回日期:2021-10-14 出版日期:2022-04-15 发布日期:2022-04-15
  • 作者简介:董建华，男，1980年生，博士，教授，主要从事冻土静动力分析与设计方面的教学与研究工作。
  • 基金资助:
    国家自然科学基金（No. 51778275，No. 52178335）；中央引导地方科技发展资金项目（No. YDZX20216200001739）；陇原青年创新创业人才（团队）项目（No. 2020RCXM120）；兰州市十大科技创新项目（No. 2020-2-11）；甘肃省知识产权局高价值专利培育和转化项目（No. 20ZSCQ034）；甘肃省基础研究创新群体项目（No. 20JR10RA205）

Calculation method and analysis of horizontal frost heave effect of L-shaped retaining wall in permafrost regions

DONG Jian-hua1, 2, WU Xiao-lei1, 2, SHI Li-jun1, 2, YU Xiao-yan1, 2, HE Peng-fei1, 2   

  1. 1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
  • Received:2021-06-15 Revised:2021-10-14 Online:2022-04-15 Published:2022-04-15
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (51778275, 52178335), the Central Government Guides Local Science and Technology Development Fund Projects (YDZX20216200001739), the Longyuan Youth Innovation and Entrepreneurship Talent (Team Project) (2020RCXM120), the Ten Science and Technology Innovation Projects in Lanzhou City (2020-2-11), the High Value Patent Cultivation and Transformation Project of Gansu Intellectual Property Office (20ZSCQ034) and the Gansu Basic Research Innovation Group Project (20JR10RA205).

PDF (Chinese)

413

PDF (English)

16

摘要： 针对多年冻土区L型挡墙设计中水平冻胀力计算方法不完善的问题，基于利夫金地基模型及挡墙?土体之间的协同变形原理，分别建立了墙后有无换填土两种情况下的L型挡墙水平冻胀效应计算模型，利用叠加原理及有限差分法对所提出的计算模型进行了求解，并依托MATLAB自行编制了水?热?力耦合分析软件。结合工程实例，应用提出的L型挡墙水平冻胀效应计算方法得到的水平冻胀力值分别与现场实测值、修正土压力值、规范经验值及水?热?力耦合软件模拟值进行对比分析，结果表明：提出L型挡墙水平冻胀效应计算方法得到的水平冻胀力值与现场实测值及数值模拟值在大体趋势上吻合较好，修正土压力值、规范经验值低估了水平冻胀力对挡墙的作用；相比规范经验值及现场实测值，提出的L型挡墙水平冻胀效应计算方法得到的水平冻胀力沿墙高呈抛物线和梯形两种分布模式，更具有普遍性；通过多场耦合分析可知，所提出L型挡墙水平冻胀效应计算方法与水?热?力耦合方法得到冻胀力趋势相似，表明了计算方法的可行性，可为多年冻土区L型挡墙设计提供一定的理论支持和指导。

关键词: L型挡墙, 水平冻胀力, 冻胀量, 变形协调, 有限差分法

Abstract: In view of the imperfection of the calculation method of horizontal frost heaving force in the design of L-shaped retaining wall in permafrost area, based on the Lifking foundation model and the cooperative deformation principle between retaining wall and soil, a simplified calculation model of horizontal frost heave effect of L-shaped retaining wall with or without replacement soil behind the wall is established, and the proposed calculation model is solved by superposition principle and finite difference method. Furthermore, the water-thermal-mechanical coupling analysis software is developed by MATLAB. Combined with an engineering example, the horizontal frost heaving force obtained by using the proposed calculation method is compared with the field measured value, the corrected earth pressure value, the code empirical value and the simulation value of the coupling software. The results show that: (1) the horizontal frost heaving force obtained by the proposed calculation method is in good agreement with the field measured value and numerical simulation value, while the corrected earth pressure value and the code empirical value underestimate the effect of horizontal frost heaving force on the retaining wall; (2) compared with the code empirical value and field measured value, the horizontal frost heaving force obtained by the proposed calculation method presents two distribution modes of parabola and trapezoid along the wall height, which is more general; (3) the multifield coupling analysis shows that the frost heaving force trend obtained by the proposed calculation method is similar to the trend obtained by the coupling method, which indicates the feasibility of the calculation method and can provide some theoretical support and guidance for the design of L-shaped retaining wall in permafrost area.

Key words: L-type retaining wall, horizontal frost-heaving forces, frost heave, deformation coordination, finite difference method

中图分类号: TU 43
[1] 李文博, 甘晓露, 刘念武, 吴昊, 谌珊珊. 基于短梁−弹簧模型的盾构隧道施工期上浮变形计算方法[J]. 岩土力学, 2024, 45(12): 3755-3767.
[2] 莫品强, 刘尧, 黄子丰, 滕鸿博, 陈斌, 陶祥令, . 复杂支护条件下深基坑支护桩−冠梁−支撑 的变形协调及空间效应研究[J]. 岩土力学, 2022, 43(9): 2592-2601.
[3] 雷华阳, 张文振, 霍海峰, 冯双喜, 李其昂, 刘汉磊, . 水汽补给下砂土冻胀量与微观结构参数关联研究[J]. 岩土力学, 2022, 43(9): 2337-2346.
[4] 马建军, 韩书娟, 高笑娟, 李达, 郭颖, . 层状土场中冲刷作用下部分埋置单桩动力响应分析[J]. 岩土力学, 2022, 43(6): 1705-1716.
[5] 夏才初, 徐英俊, 王辰霖, 赵海鸥, 薛小代, . 基于非稳态渗流过程的压气储能 洞室空气渗漏率计算[J]. 岩土力学, 2021, 42(7): 1765-1773.
[6] 向伏林, 杨天亮, 顾凯, 施斌, 刘春, 刘苏平, 张诚成, 姜月华, . 钻孔全断面分布式光纤监测中光缆-土体变形协调性的离散元数值模拟[J]. 岩土力学, 2021, 42(6): 1743-1754.
[7] 江文豪, 詹良通. 考虑井阻效应及径向渗透系数变化下砂井 地基的大变形固结[J]. 岩土力学, 2021, 42(3): 755-766.
[8] 仉文岗, 王琦, 陈福勇, 陈龙龙, 王鲁琦, 王林, 张艳梅, 王玉琦, 朱星, . 考虑岩体空间变异性的边坡可靠度分析 及抗滑桩随机响应研究[J]. 岩土力学, 2021, 42(11): 3157-3168.
[9] 贺志军, 雷皓程, 夏张琦, 赵炼恒. 多层软土地基中单桩沉降与内力位移分析[J]. 岩土力学, 2020, 41(2): 655-666.
[10] 刘忠玉, 夏洋洋, 张家超, 朱新牧. 考虑Hansbo渗流的饱和黏土 一维弹黏塑性固结分析[J]. 岩土力学, 2020, 41(1): 11-22.
[11] 陈栋, 王恩元, 李楠, . 不同煤岩介质模型的波场特征研究[J]. 岩土力学, 2019, 40(S1): 449-458.
[12] 龚文惠, 赵旭东, 邱金伟, 李逸, 杨晗. 饱和软土大应变自重固结非线性分析[J]. 岩土力学, 2019, 40(6): 2099-2107.
[13] 刘忠玉, 崔鹏陆, 郑占垒, 夏洋洋, 张家超. 基于非牛顿指数渗流和分数阶Merchant模型的 一维流变固结分析[J]. 岩土力学, 2019, 40(6): 2029-2038.
[14] 黄生根，刘东军，胡永健，. 电磁波CT技术探测溶洞的模拟分析与应用研究[J]. , 2018, 39(S1): 544-550.
[15] 周 勇，朱亚薇, . 深基坑桩锚支护结构和土体之间协同作用[J]. , 2018, 39(9): 3246-3252.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 《岩土力学》编辑部
地址：湖北武汉武昌小洪山中国科学院武汉岩土力学研究所(430071)　邮编：200042　电话：027-87198484　E-mail: ytlx@whrsm.ac.cn
本系统由北京玛格泰克科技发展有限公司设计开发