吉林大学学报(工学版) ›› 2020, Vol. 50 ›› Issue (1): 156-164.doi: 10.13229/j.cnki.jdxbgxb20181171

• 交通运输工程·土木工程 • 上一篇    

非饱和重塑黄土⁃混凝土接触面修正双曲线模型

高登辉1,2(),邢义川2,郭敏霞3,张爱军3,王献涛4,马保红5   

  1. 1. 黄淮学院 建筑工程学院, 河南 驻马店 463000
    2. 中国水利水电科学研究院, 北京100048
    3. 西北农林科技大学 水利与建筑工程学院, 陕西 杨凌712100
    4. 驻马店职业技术学院 建筑工程系, 河南 驻马店 463000
    5. 甘肃公航旅工程咨询有限公司, 兰州 730030
  • 收稿日期:2018-11-26 出版日期:2020-01-01 发布日期:2020-02-06
  • 作者简介:高登辉（1988-），男，博士研究生. 研究方向：非饱和土的力学性质及工程应用.E-mail:1403970876@qq.com
  • 基金资助:
    国家自然科学基金项目(51379220)

Modified hyperbola model of interface between unsaturated remolded loess and concrete

Deng-hui GAO1,2(),Yi-chuan XING2,Min-xia GUO3,Ai-jun ZHANG3,Xian-tao WANG4,Bao-hong MA5   

  1. 1. Department of Architectural and Civil Engineering, University of Huanghuai, Zhumadian 463000, China
    2. China Institute of Water Resources and Hydropower Research, Beijing 100048, China
    3. College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China
    4. Department of Architectural Engineering, Zhumadian Vocational and Technical College, Zhumadian 463000, China
    5. Gansu Provincial Highway Aviation Tourism Investment Group, Lanzhou 730030, China
  • Received:2018-11-26 Online:2020-01-01 Published:2020-02-06

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摘要：

为解决非饱和土与结构物接触计算中的力水耦合问题，进行了不同含水率重塑黄土与混凝土接触面的直剪试验，首先根据试验规律分别简化了双曲线模型中初始剪切劲度系数、极限抗剪强度与法向应力间的关系表达式，然后引入含水率这一变量，建立了适用于非饱和土的接触面修正双曲线模型，该模型具有6个参数，通过不同含水率的接触面直剪试验即可获得。计算结果与试验结果的对比证明了该模型的可行性。该修正双曲线模型可以同时考虑法向应力与含水率两变量，可以较好地实现非饱和黄土与结构物的接触计算。

关键词: 岩土工程, 非饱和黄土, 接触面, 直剪试验, 双曲线模型

Abstract:

In order to solve the problem of interface calculation between unsaturated soil and structure coupled force and water, the direct shear tests of remolded loess and concrete interface with different moisture content were carried out. Firstly, the relationships between the initial shear stiffness coefficient, the ultimate shear strength and the normal stress in the hyperbolic model are simplified based on the test rule. Then the water content is introduced to establish the modified hyperbolic model suitable for unsaturated soil, which has six parameters and can be obtained by direct shear test of interface with different moisture content. The feasibility of the model is demonstrated by comparing the calculated results with the test results. The modified hyperbola model can consider both normal stress and moisture content, and can be used to calculate the interface mechanics between unsaturated soil and structure.

Key words: geotechnical engineering, unsaturated loess, interface, direct shear test, hyperbolic model

中图分类号: 

  • TU4

表1

原状黄土的基本物理特性"

埋深/m 比重 干密度/(g?cm-3) 液限/% 塑限/%
3 2.71 1.27 35.3 17.9
4 2.71 1.29 33.3 17.4
5 2.71 1.27 34.6 16.6

图1

试验图片"

图2

不同含水率试样 τ - u 数据点及拟合曲线"

图3

不同法向应力下 Δ τ ? w 关系曲线"

图4

k?σ n关系曲线"

表2

k s i 和 τ u 值"

σ n /kPa w=10% w=15% w=20% w=25%
k s i /(kPa·mm-1) τ u /kPa k s i /(kPa·mm-1) τ u /kPa k s i /(kPa·mm-1) τ u /kPa k s i /(kPa·mm-1) τ u /kPa
50 63.3 41.0 59.9 36.5 45.0 32.3 40.0 26.8
100 76.3 70.0 63.3 61.7 48.3 59.2 48.8 53.2
200 96.2 149.3 88.5 131.6 82.0 126.6 75.8 108
300 122.0 222.2 117.6 200.0 114.9 178.6 109.9 164
400 138.9 303.0 137.0 277.8 128.2 250.0 123.5 192

图5

k si?σ n关系曲线"

图6

τ u?σ n关系曲线"

表3

k si?σ n和 τ u ?σ n线性拟合参数值"

w/% s t m n
10 0.218 53.54 0.733 -1.28
15 0.234 44.12 0.693 -4.03
20 0.261 28.98 0.615 -0.69
25 0.254 26.25 0.516 2.74

图7

t?w 关系曲线"

图8

m ? w 关系曲线"

图9

模型计算与试验结果的对比"

1 夏红春，周国庆 .土-结构接触面剪切力学特性及其影响因素试验[J].中国矿业大学学报,2010,39(6):831-836.
Xia Hong-chun , Zhou Guo-qing . Experimental study of the shear mechanical characteristics at a soil-structure interface and the factors affecting them[J]. Journal of China University of Mining & Technology, 2010, 39(6):831-836.
2 Potyondy J G . Skin friction between various soils and construction materials[J]. Géotechnique, 1961, 11(4):339-353.
3 胡黎明，濮家骝 . 土与结构物接触面物理力学特性试验研究[J].岩土工程学报, 2001,23(4):431-435.
Hu Li-ming , Pu Jia-liu . Experimental study on mechanical characteristics of soil-structure interface[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(4):431-435
4 金子豪，杨奇，陈琛，等 .粗糙度对混凝土‒砂土接触面力学特性的影响试验研究[J].岩石力学与工程学报, 2018,37(3):754-765.
Jin Zi-hao , Yang Qi , Chen Chen , et al . Experimental study on effects of the roughness on mechanical behaviors of concrete-sand interface[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(3):754-765.
5 张冬霁，卢廷浩 . 一种土与结构接触面模型的建立及其应用[J].岩土工程学报, 1998, 20(6):65-69.
Zhang Dong-ji , Lu Ting-hao . Establishment and application of a interface model between soil and structure [J]. Chinese Journal of Geotechnical Engineering, 1998, 20(6):65-69.
6 王永洪，张明义，刘俊伟，等 . 超孔隙水压力对低塑性黏性土桩土界面抗剪强度的影响[J].岩土力学, 2018,39(3): 831-838.
Wang Yong-hong , Zhang Ming-yi , Liu Jun-wei , et al . Influence of excess pore water pressure on shear strength of pile-soil interface in clayey soil[J]. Rock and Soil Mechanics, 2018, 39(3):831-838.
7 Clough G W , Duncan J M . Finite element analysis of retaining wall behavior[J]. Journal of Soil Mechanics and Foundation Engineering Division, ASCE, 1971,97(12):1657-1673.
8 Boulon M , Nova R . Modeling of soil structure interface behavior: a comparison between elastoplastic and rate-type laws[J]. Computers and Geotechnics, 1990, 17(9): 21-46.
9 殷宗泽，朱泓，许国华 .土与结构材料接触面的变形及其数学模拟[J].岩土工程学报, 1994,10(3):14-22.
Yin Zong-ze , Zhu Hong , Xu Guo-hua . Numerical simulation of the deformation in the interface between soil and structural material[J]. Chinese Journal of Geotechnical Engineering, 1994, 10(3): 14-22.
10 栾茂田，武亚军 .土与结构间接触面的非线性弹性-理想塑性模型及其应用[J].岩土力学, 2004,25(4):507-513.
Luan Mao-tian, Wu Ya-jun, A nonlinear elasto-perfectly plastic model of interface element for soil-structure interaction and its applications[J]. Rock and Soil Mechanics, 2004, 25(4):507-513.
11 张嘎，张建民 .粗粒土与结构接触面统一本构模型及试验验证[J]. 岩土工程学报, 2005,27(10):1175-1179.
Zhang Ga , Zhang Jian-min . Unified modeling of soil-structure interface and its test confirmation [J]. Chinese Journal of Geotechnical Engineering, 2005, 27(10):1175-1179.
12 Lashkari A , Torkanlou E . On the constitutive modeling of partially saturated interfaces[J]. Computers and Geotechnics, 2016(74):222-233.
13 GB/T 50123―1999.土工试验方法标准［S］.
14 于友成 . 黄土浸水入渗特性原位试验研究[D].西安：长安大学公路学院，2003.
Yu You-cheng . Test study in situ for specific property of infiltrating loess[D]. Xi’an: College of Highway, Chang’an University, 2003.
15 刘方成，尚守平，王海东 .粉质黏土-混凝土接触面特性单剪试验研究[J]. 岩石力学与工程学报, 2011,30(8):1720-1728.
Liu Fang-cheng , Shang Shou-ping , Wang Hai-dong . Study of shear properties of silty clay-concrete interface by simple shear test[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(8):1720-1728.
16 赵春风，龚辉，赵程，等 .考虑法向应力历史的黏土-混凝土界面弹塑性分析[J].岩石力学与工程学报, 2012,31(4):848-855.
Zhao Chun-feng , Gong Hui , Zhao Cheng , et al . Elastoplastic analysis of interface between clay and concrete considering effect of normal stress history effects[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(4):848-855.
17 卢廷浩，鲍伏波 . 接触面薄层单元耦合本构模型[J]. 水利学报, 2000(2):71-75.
Lu Ting-hao , Bao Fu-bo . A coupled constitutive model for interface thin-layer element[J]. Journal of Hydraulic Engineering, 2000(2):71-75.
18 张嘎，张建民 . 粗粒土与结构接触面单调力学特性的试验研究[J].岩土工程学报, 2004,26(1):21-25.
Zhang Ga , Zhang Jian-min . Experimental study on monotonic behavior of interface between soil and structure [J]. Chinese Journal of Geotechnical Engineering, 2004, 26(1):21-25.
19 张明义，白晓宇，高强，等 . 黏性土中桩-土界面受力机制室内试验研究[J]. 岩土力学, 2017,38(8):2167-2174.
Zhang Ming-yi , Bai Xiao-yu , Gao Qiang , et al . Experimental study on interfacial bearing mechanism of piles in cohesive soil[J]. Rock and Soil Mechanics, 2017, 38(8):2167-2174.
20 殷宗泽 .土工原理［M］.北京：中国水利水电出版社,2007.
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