|本期目录/Table of Contents|

[1]张常光,吴 凯,李宗辉,等.考虑中间主应力的非饱和土上埋式涵洞竖向土压力公式[J].建筑科学与工程学报,2021,38(06):177-185.[doi:10.19815/j.jace.2021.04092]
 ZHANG Chang-guang,WU Kai,LI Zong-hui,et al.Formulation of Vertical Earth Pressure Against Positive Buried Culvert in Unsaturated Soils Considering Intermediate Principal Stress[J].Journal of Architecture and Civil Engineering,2021,38(06):177-185.[doi:10.19815/j.jace.2021.04092]
点击复制

考虑中间主应力的非饱和土上埋式涵洞竖向土压力公式(PDF)
分享到:

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
38卷
期数:
2021年06期
页码:
177-185
栏目:
出版日期:
2021-11-05

文章信息/Info

Title:
Formulation of Vertical Earth Pressure Against Positive Buried Culvert in Unsaturated Soils Considering Intermediate Principal Stress
文章编号:
1673-2049(2021)06-0177-09
作者:
张常光12吴 凯1李宗辉1关港辉1
(1. 长安大学 建筑工程学院,陕西 西安 710061; 2. 成都理工大学 地质灾害防治与地质环境保护国家重点实验室,四川 成都 610059)
Author(s):
ZHANG Chang-guang12 WU Kai1 LI Zong-hui1 GUAN Gang-hui1
(1. School of Civil Engineering, Chang’an University, Xi’an 710061, Shaanxi, China; 2. Stake Key Laboratory of Geohazard Prevetion and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China)
关键词:
非饱和土 上埋式涵洞 竖向土压力 基质吸力 中间主应力
Keywords:
unsaturated soil positive buried culvert vertical earth pressure matric suction intermediate principal stress
分类号:
TU432
DOI:
10.19815/j.jace.2021.04092
文献标志码:
A
摘要:
基于非饱和土的平面应变抗剪强度公式,考虑中间主应力和基质吸力的共同影响,分别建立了均匀与线性2种吸力分布下非饱和土上埋式涵洞的竖向土压力公式,并对其进行可比性分析,对比文献数值模拟和模型试验进行正确性验证,最后探讨了各参数的影响特性。研究结果表明:所建立的上埋式涵洞竖向土压力公式为系列化的有序解析解,可退化为文献已有解答并包含众多新解答,并能计算涵顶上方不同高度处的竖向土压力,工程应用前景广泛; 基质吸力对涵顶竖向土压力具有重要影响,且线性吸力影响不如均布吸力明显,应考虑回填土的非饱和特性并实测吸力分布; 中间主应力效应随基质吸力和填土高度的增大而更加显著,同时均布吸力下中间主应力效应较明显,应合理选取强度准则以反映回填土强度的中间主应力作用; 等沉面高度与回填土物理力学性质、中间主应力效应、基质吸力及分布形式等有关; 基质吸力及其分布影响、中间主应力效应均与填土高度密切相关,体现了多因素对涵顶竖向土压力的综合影响。
Abstract:
Based on the shear strength equation of unsaturated soils in the plane strain condition to account for interaction influences of intermediate principal stress and matric suction, the formulations of vertical earth pressure against positive buried culvert in unsaturated soils under uniform and linear distributions of matric suction were established, respectively. Comparability analysis of the proposed formulation was then carried out. Comparing validations against numerical simulations and model tests reported in the literature were performed, and parametric studies were finally discussed. The study results show that the proposed formulation of vertical earth pressure is a series of orderly analytical solutions, which can reduce to available results and involve many new ones to calculate vertical earth pressure at different depths above the culvert top. Therefore, the proposed formulation has good comparability and broad applicability. The influence of matric suction on vertical earth pressure at the culvert top is significant, and the influence of linear suction is not as obvious as that of uniform suction, so the unsaturated characteristics of backfill soils should be considered and suction distributions should be field measured. The influence of intermediate principal stress on vertical earth pressure increases with matric suction and backfill soil height and is more obvious for uniform suction, so a reasonable strength criterion should be adopted to describe the influence of intermediate principal stress on backfill soil strength. The height of equal settlement plane is dependent on physical and mechanical properties of backfill soils, intermediate principal stress, matric suction and its distribution. The influence of matric suction and its distribution as well as the influence of intermediate principal stress are closely related to backfill soil height, which indicates comprehensive influences of multiple factors on vertical earth pressure at the culvert top.

参考文献/References:

[1] 曾国熙.土坝下涵管竖向土压力的计算[J].浙江大学学报,1960,4(1):79-97.
ZENG Guo-xi.Calculation of Vertical Earth Pressure on Culverts Under Earth Dams[J].Journal of Zhejiang University,1960,4(1):79-97.
[2]顾安全.上埋式管道及洞室垂直土压力的研究[J].岩土工程学报,1981,3(1):3-15.
GU An-quan.Investigation of the Vertical Earth Pressure on Projecting Conduit and Underground Chamber Under a High Embankment[J].Chinese Journal of Geotechnical Engineering,1981,3(1):3-15.
[3]刘全林,杨 敏.上埋式管道上竖向土压力计算的探讨[J].岩土力学,2001,22(2):214-218.
LIU Quan-lin,YANG Min.Study of Vertical Soil Pressure on Positive Buried Pipeline[J].Rock and Soil Mechanics,2001,22(2):214-218.
[4]边学成,申文明,马祖桥,等.不同填土管涵土压力模型试验和数值模拟研究[J].土木工程学报,2012,45(1):127-133.
BIAN Xue-cheng,SHEN Wen-ming,MA Zu-qiao,et al.Model Test and Numerical Simulation of Earth Pressure on Culvert Under Different Earth Backfill Conditions[J].China Civil Engineering Journal,2012,45(1):127-133.
[5]ZHANG H F,ZHANG P,ZHOU W,et al.A New Model to Predict Soil Pressure Acting on Deep Burial Jacked Pipes[J].Tunnelling and Underground Space Technology,2016,60:183-196.
[6]QIN X G,NI P P,ZHOU M.Improved Analytical Solution of Vertical Pressure on Top of Induced Trench Rigid Culverts[J].Geosynthetics International,2017,24(6):615-624.
[7]张业勤,陈保国,孟庆达,等.减载条件下高填方涵洞受力机制及基底压力[J].岩土力学,2019,40(12):4813-4818,4847.
ZHANG Ye-qin,CHEN Bao-guo,MENG Qing-da,et al.Stress Mechanism and Foundation Contact Pressure of High Fill Culvert Under Load Reduction Condition[J].Rock and Soil Mechanics,2019,40(12):4813-4818,4847.
[8]黄亚娟,赵均海,田文秀,等.上埋式涵管的竖直土压力计算的统一解[C]//中国土木工程学会.中国土木工程学会第十届土力学及岩土工程学术会议论文集.重庆:重庆大学出版社,2008:475-478.
HUANG Ya-juan,ZHAO Jun-hai,TIAN Wen-xiu,et al.Unified Solution of Vertical Earth Pressure of Positive Buried Culverts[C]//China Civil Engineering Society.Proceedings of the 10th Academic Conference on Soil Mechanics and Geotechnical Engineering of China Civil Engineering Society.Chongqing:Chongqing University Press,2008:475-478.
[9]陈正汉.非饱和土与特殊土力学的基本理论研究[J].岩土工程学报,2014,36(2):201-272.
CHEN Zheng-han.On Basic Theories of Unsaturated Soils and Special Soils[J].Chinese Journal of Geotechnical Engineering,2014,36(2):201-272.
[10]蔺 港,孔令刚,詹良通,等.基于太沙基土拱效应考虑基质吸力影响的松动土压力计算模型[J].岩土力学,2015,36(7):2095-2104.
LIN Gang,KONG Ling-gang,ZHAN Liang-tong,et al.An Analytical Model for Loosening Earth Pressure Considering Matric Suction Based on Terzaghi Soil Arch Effect[J].Rock and Soil Mechanics,2015,36(7):2095-2104.
[11]ALZABEEBEE S.Influence of Backfill Soil Saturation on the Structural Response of Buried Pipes[J].Transportation Infrastructure Geotechnology,2020,7(2):156-174.
[12]FANG X,KIKUMOTO M,CUI Y.A Theory of Loosening Earth Pressure Above a Shallow Tunnel in Unsaturated Ground[J].International Journal for Numerical and Analytical Methods in Geomechanics,2020,44(10):1495-1508.
[13]MATSUOKA H,SUN D A,KOGANE A,et al.Stress-strain Behavior of Unsaturated Soil in True Triaxial Tests[J].Canadian Geotechnical Journal,2002,39(3):608-619.
[14]HOYOS L R,PEREZ-RUIZ D D,PUPPALA A J.Refined True Triaxial Apparatus for Testing Unsaturated Soils Under Suction-controlled Stress Paths[J].International Journal of Geomechanics,2012,12(3):281-291.
[15]ZHANG C G,CHEN X D,FAN W,et al.A New Unified Failure Criterion for Unsaturated Soils[J].Environmental Earth Sciences,2015,74(4):3345-3356.
[16]方瑾瑾,冯以鑫,王立平,等.真三轴条件下非饱和黄土的有效应力屈服特性[J].岩土力学,2020,41(2):492-500.
FANG Jin-jin,FENG Yi-xin,WANG Li-ping,et al.Effective Stress Yielding Behavior of Unsaturated Loess Under True Triaxial Conditions[J].Rock and Soil Mechanics,2020,41(2):492-500.
[17]ZHENG F,SHAO S J,WANG J,et al.Experimental Study on the Mechanical Behaviour of Natural Loess Based on Suction-controlled True Triaxial Tests[J].KSCE Journal of Civil Engineering,2020,24(8):2304-2321.
[18]张常光,胡云世,赵均海.平面应变条件下非饱和土抗剪强度统一解及应用[J].岩土工程学报,2011,33(1):32-37.
ZHANG Chang-guang,HU Yun-shi,ZHAO Jun-hai.Unified Solutions of Shear Strength for Unsaturated Soil Under Plane Strain Condition and Its Application[J].Chinese Journal of Geotechnical Engineering,2011,33(1):32-37.
[19]张常光,赵均海,朱 倩.非饱和土刚性挡墙抗倾覆临界嵌固深度研究[J].岩石力学与工程学报,2014,33(11):2360-2369.
ZHANG Chang-guang,ZHAO Jun-hai,ZHU Qian.Critical Embedment Depth of Rigid Retaining Walls in Foundation Pit of Unsaturated Soils[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(11):2360-2369.
[20]任传健,贾洪彪,马淑芝.基于统一强度理论的非饱和土斜坡稳定性分析[J].水电能源科学,2015,33(9):139-142.
REN Chuan-jian,JIA Hong-biao,MA Shu-zhi.Stability Analysis of Unsaturated Soil Slope Based on Unified Strength Theory[J].Water Resources and Power,2015,33(9):139-142.
[21]张常光,赵均海,代 岩.硬壳层非饱和软基路堤的填土高度研究[J].力学学报,2016,48(2):482-494.
ZHANG Chang-guang,ZHAO Jun-hai,DAI Yan.Investigation on Filling Height of Embankment on Unsaturated Soft Ground with Stiff Crust[J].Chinese Journal of Theoretical and Applied Mechanics,2016,48(2):482-494.
[22]YAO C,YANG X L.Limit Analysis of Unsaturated Soil Slope Stability Considering Intermediate Principal Stress and Strength Nonlinearity[J].Geotechnical and Geological Engineering,2017,35(5):2053-2063.
[23]师晨翔,杨永平,马际首,等.考虑土体基质吸力刚性挡墙基坑抗倾覆稳定性分析[J].结构工程师,2018,34(3):152-157.
SHI Chen-xiang,YANG Yong-ping,MA Ji-shou,et al.Anti-overturning Stability Analysis of Rigid Wall Considering Soil Matric Suction[J].Structural Engineers,2018,34(3):152-157.
[24]俞茂宏.岩土类材料的统一强度理论及其应用[J].岩土工程学报,1994,16(2):1-10.
YU Mao-hong.Unified Strength Theory for Geomaterials and Its Applications[J].Chinese Journal of Geotechnical Engineering,1994,16(2):1-10.
[25]FREDLUND D G,MORGENSTEM N R,WIDGER R A.The Shear Strength of Unsaturated Soils[J].Canadian Geotechnical Journal,1978,15(3):313-321.
[26]李永刚,张善元.矩形沟埋涵洞顶部垂直土压力试验和理论研究[J].岩土力学,2008,29(4):1081-1086.
LI Yong-gang,ZHANG Shan-yuan.Experimental and Theoretical Study on Earth Pressure on Top of Rectangular Trench-buried Culverts[J].Rock and Soil Mechanics,2008,29(4):1081-1086.

相似文献/References:

[1]赵均海,殷 佳,张常光,等.降雨条件下非饱和朗肯土压力统一解[J].建筑科学与工程学报,2016,33(02):1.
 ZHAO Jun-hai,YIN Jia,ZHANG Chang-guang,et al.Unified Solution of Rankine’s Earth Pressure of Unsaturated Soil Under Rainfall[J].Journal of Architecture and Civil Engineering,2016,33(06):1.
[2]张常光,赵均海,朱倩.非饱和土抗剪强度公式分类及总结[J].建筑科学与工程学报,2012,29(02):74.
 ZHANG Chang-guang,ZHAO Jun-hai,ZHU Qian.Classification and Summary of Shear Strength Formulae for Unsaturated Soils[J].Journal of Architecture and Civil Engineering,2012,29(06):74.

备注/Memo

备注/Memo:
收稿日期:2021-04-27
基金项目:国家自然科学基金项目(41202191); 地质灾害防治与地质环境保护国家重点实验室开放基金项目(SKLGP2020K022); 中央高校基本科研业务费专项资金项目(300102280108)
作者简介:张常光(1982-),男,山东菏泽人,教授,工学博士,博士后,E-mail:zcg1016@163.com。
更新日期/Last Update: 2021-11-01