浏览全部资源
扫码关注微信
- About Journal
- Aims & scope
- Overview
- Indexing
- All issues
- Latest Issue
- Archive
- Online First
- Virtual Issues
- Authors
- Author’s Home
- Guide for Authors
- Copyright and License Term
- Peer Review
- Open access
- Ethics Policy
- Publication Agreement
Upper bound solution of ultimate resistance of berm-retained excavations under rotating failure mode
- Journal of Civil and Environmental Engineering Vol. 45, Issue 5, Pages: 116-124(2023)
- 作者机构：
重庆大学 土木工程学院，重庆 400045
- 作者简介：
ZHANG Hui (1997- ), main research interest: geotechnical engineering, E-mail: 13883690532@163.com.
WU Shuguang （corresponding author）, associate professor, E-mail: wushuguang@cqu.edu.cn.
- 基金信息：The National Key Technologies R&D Program of China(2018YFC1505501)
DOI：10.11835/j.issn.2096-6717.2021.197
CLC： TU432Received：13 June 2021，
Published：25 October 2023
- 稿件说明：
移动端阅览
ZHANG Hui, WU Shuguang, YANG Kaicheng. Upper bound solution of ultimate resistance of berm-retained excavations under rotating failure mode[J]. Journal of Civil and Environmental Engineering, 2023, 45(5): 116-124.
ZHANG Hui, WU Shuguang, YANG Kaicheng. Upper bound solution of ultimate resistance of berm-retained excavations under rotating failure mode[J]. Journal of Civil and Environmental Engineering, 2023, 45(5): 116-124. DOI： 10.11835/j.issn.2096-6717.2021.197.
摘要
对于支撑式或锚拉式支挡结构，进行预留土辅助支护时需验算绕支点的抗倾覆稳定性，然而目前还未找到合理的计算方法。基于极限分析上限定理，提出预留土支护基坑的3种可能破坏模式，运用斜条分法对被动区土体进行离散，并构建相容速度场，分别推导3种破坏模式下基坑抗倾覆力矩的计算表达式，采用遗传算法编程，分析支挡结构与土体间摩擦系数、土体黏聚力及预留土几何参数等对破裂角及抗倾覆力矩的影响规律。结果表明：当墙背光滑且土体黏聚力为零时，利用朗肯被动土压力理论计算得到的抗倾覆力矩为一上限解；存在黏聚力时，朗肯被动土压力理论计算值偏于保守，存在摩擦系数时，库伦土压力理论计算的抗倾覆力矩偏大；与预留土宽度和坡度相比，预留土高度对抗倾覆力矩的影响更加显著。
Abstract
For strutted or anchored retaining structures
the anti-overturning stability around the fulcrum needs to be checked for the berm-retained excavations. However
a reasonable calculation method has not yet been found. Based on the upper limit theorem of limit analysis
three possible failure modes of the berm-retained excavations were proposed
the slice method with inclined interfaces was used to separate the passive soil area
and a compatible velocity field was constructed. The expressions for calculating the anti-overturning moment of foundation pit under three failure modes were derived respectively. Through the calculation example
the effects of friction coefficient between retaining structure and soil
soil cohesive force and the berm-retained geometric parameters on the rupture angle and anti-overturning moment were analyzed by using genetic algorithm. The results show that when the wall is smooth and the soil cohesion is zero
the anti-overturning moment calculated by Rankine's passive earth pressure theory is an upper bound solution. When cohesive force exists
the theoretical value of Rankine's passive earth pressure theory is conservative
when friction coefficient exists
the anti-overturning moment calculated by coulomb earth pressure theory is too large. In addition
the berm-retained height has a more significant influence on the anti-overturning moment than the berm-retained width and slope.
关键词
Keywords
references
李顺群 , 郑刚 , 王英红 . 反压土对悬臂式支护结构嵌固深度的影响研究 [J]. 岩土力学 , 2011 , 32 ( 11 ): 3427 - 3431, 3436 .
LI S Q , ZHENG G , WANG Y H . Influence of earth berm on embedment depth of cantilever retaining structure for pit excavation [J]. Rock and Soil Mechanics , 2011 , 32 ( 11 ): 3427 - 3431, 3436 . (in Chinese)
郑刚 , 陈红庆 , 雷扬 , 等 . 基坑开挖反压土作用机制及其简化分析方法研究 [J]. 岩土力学 , 2007 , 28 ( 6 ): 1161 - 1166 .
ZHENG G , CHEN H Q , LEI Y , et al . A study of mechanism of earth berm and simplified analysis method for excavation [J]. Rock and Soil Mechanics , 2007 , 28 ( 6 ): 1161 - 1166 . (in Chinese)
建筑基坑支护技术规程 ： JGJ 120—2012 [S]. 北京 : 中国建筑工业出版社 , 2012 .
Technical specification for retaining and protection of building foundation excavations : JGJ 120—2012 [S]. Beijing : China Architecture & Building Press , 2012 . (in Chinese)
韩同春 , 谢灵翔 , 刘振 . 坑中坑条件下基坑有限土体的被动土压力计算 [J]. 岩土力学 , 2018 , 39 ( 12 ): 4404 - 4412 .
HAN T C , XIE L X , LIU Z . Calculation of passive earth pressure for finite soil in foundation pit under pit-in-pit condition [J]. Rock and Soil Mechanics , 2018 , 39 ( 12 ): 4404 - 4412 . (in Chinese)
陈富强 , 杨光华 , 孙树楷 , 等 . 考虑基坑坑内反压土作用的实用方法及应用 [J]. 地下空间与工程学报 , 2019 , 15 ( Sup1 ): 299 - 304 .
CHEN F Q , YANG G H , SUN S K , et al . A practical method and engineering application considering the effect of earth berm in foundation pits [J]. Chinese Journal of Underground Space and Engineering , 2019 , 15 ( Sup1 ): 299 - 304 . (in Chinese)
SMETHURST J A , POWRIE W . Effective-stress analysis of berm-supported retaining walls [J]. Proceedings of the Institution of Civil Engineers-Geotechnical Engineering , 2008 , 161 ( 1 ): 39 - 48 .
DALY M P , POWRIE W . Undrained analysis of earth berms as temporary supports for embedded retaining walls [J]. Proceedings of the Institution of Civil Engineers-Geotechnical Engineering , 2001 , 149 ( 4 ): 237 - 248 .
POWRIE W , DALY M P . Centrifuge model tests on embedded retaining walls supported by earth berms [J]. Géotechnique , 2002 , 52 ( 2 ): 89 - 106 .
陈福全 , 吴国荣 , 刘毓氚 . 基坑内预留土堤对基坑性状的影响分析 [J]. 岩土工程学报 , 2006 , 28 ( Sup1 ): 1470 - 1474 .
CHEN F Q , WU G R , LIU Y C . Effect of berms on behaviors of excavation supported by sheet-pile walls [J]. Chinese Journal of Geotechnical Engineering , 2006 , 28 ( Sup1 ): 1470 - 1474 . (in Chinese)
尹盛斌 . 基坑预留土台的简化分析方法研究 [J]. 岩土力学 , 2016 , 37 ( 2 ): 524 - 536 .
YIN S B . A simplified analysis method for earth berm in foundation pit [J]. Rock and Soil Mechanics , 2016 , 37 ( 2 ): 524 - 536 . (in Chinese)
刘畅 , 孙盼盼 , 赵露伟 , 等 . 基坑开挖反压土截面特性对基坑性状影响的有限元分析 [J]. 地下空间与工程学报 , 2017 , 13 ( 3 ): 788 - 795 .
LIU C , SUN P P , ZHAO L W , et al . Finite element analysis of earth berm wxcavation pit traits affect section properties [J]. Chinese Journal of Underground Space and Engineering , 2017 , 13 ( 3 ): 788 - 795 . (in Chinese)
FAN J L , REN Y H , WU Y H , et al . Application of earth berm in foundation pit engineering [J]. Applied Mechanics and Materials , 2014 , 638/ 639 / 640 : 389 - 392 .
LEE M H , KIM T H . Parametric study on displacement of earth retaining wall by the bermed excavation using back analysis [J]. Journal of the Korean Geosynthetic Society , 2015 , 14 ( 4 ): 23 - 33 .
秦会来 , 周予启 , 黄茂松 , 等 . 基于上限理论的预留土支护基坑极限抗力分析 [J]. 岩土工程学报 , 2020 , 42 ( 6 ): 1101 - 1107 .
QIN H L , ZHOU Y Q , HUANG M S , et al . Passive earth pressure analysis of berm-retained excavation by upper bound method [J]. Chinese Journal of Geotechnical Engineering , 2020 , 42 ( 6 ): 1101 - 1107 . (in Chinese)
ZHANG G , NIE D Q , DIAO Yet al . Numerical and experimental study of multi-bench retained excavations [J]. Geomechanics and Engineering , 2017 , 13 ( 5 ): 715 - 742 .
GOURVENEC S M , POWRIE W . Three-dimensional finite element analyses of embedded retaining walls supported by discontinuous earth berms [J]. Canadian Geotechnical Journal , 2000 , 37 ( 5 ): 1062 - 1077 .
EL-SHERBINY M M , EL-SHERBINY R M , EL-MAMLOUK H . Three dimensional effect of grouted discontinuous berms for passive support of diaphragm walls [C]// Grouting 2017 . Honolulu, Hawaii . Reston, VA : American Society of Civil Engineers , 2017 : 571 - 583 .
EL-SHERBINY M M , EL-SHERBINY R M , EL-MAMLOUK H H . Three dimensional analysis of diaphragm walls supported by passive berms [C]// Engineering Challenges for Sustainable Underground Use , 2018 : 115 - 127 .
FANG Y S , CHEN T J , WU B F . Passive earth pressures with various wall movements [J]. Journal of Geotechnical Engineering , 1994 , 120 ( 8 ): 1307 - 1323 .
夏元友 , 陈春舒 . 考虑土体多参数非均质性及各向异性锚固边坡抗震稳定性极限分析 [J]. 岩石力学与工程学报 , 2018 , 37 ( 4 ): 829 - 837 .
XIA Y Y , CHEN C S . Seismic stability limit analysis of reinforced soil slopes with prestressed cables considering inhomogeneity and anisotropy of multiple parameters [J]. Chinese Journal of Rock Mechanics and Engineering , 2018 , 37 ( 4 ): 829 - 837 . (in Chinese)
年廷凯 , 刘凯 , 黄润秋 , 等 . 多阶多层复杂边坡稳定性的通用上限方法 [J]. 岩土力学 , 2016 , 37 ( 3 ): 842 - 849 .
NIAN T K , LIU K , HUANG R Q , et al . A generalized upper-bound limit analysis approach for stability analysis of complex multistep and multilayer slopes [J]. Rock and Soil Mechanics , 2016 , 37 ( 3 ): 842 - 849 . (in Chinese)
洪利 , 仉文岗 . 渐近搜索算法在软土基坑基底抗隆起上限分析中的应用 [J]. 土木与环境工程学报(中英文) , 2020 , 42 ( 6 ): 46 - 53 .
HONG L , ZHANG W G . Application of progressive search algorithm in upper bound analysis of basal stability for braced excavations in soft clay [J]. Journal of Civil and Environmental Engineering , 2020 , 42 ( 6 ): 46 - 53 . (in Chinese)
李泽 , 胡政 , 彭普 , 等 . 基坑稳定性的塑性极限分析上限法研究 [J]. 水资源与水工程学报 , 2019 , 30 ( 3 ): 230 - 236 .
LI Z , HU Z , PENG P , et al . Research on upper bound method of plastic limit analysis for excavation stability [J]. Journal of Water Resources and Water Engineering , 2019 , 30 ( 3 ): 230 - 236 . (in Chinese)
瑜璐 , 杨庆 , 张金利 . 基于上限法分析椭圆形结构的极限承载力 [J]. 岩土工程学报 , 2021 , 43 ( 2 ): 356 - 364 .
YU L , YANG Q , ZHANG J L . Ultimate bearing capacity of elliptical tip by upper bound analysis [J]. Chinese Journal of Geotechnical Engineering , 2021 , 43 ( 2 ): 356 - 364 . (in Chinese)
王桂林 , 赵飞 , 张永兴 . 重力式挡土墙地震旋转位移下的屈服加速度 [J]. 岩土力学 , 2013 , 34 ( 6 ): 1579 - 1585 .
WANG G L , ZHAO F , ZHANG Y X . Earthquake yield acceleration of seismic rotational displacement of gravity retaining wall [J]. Rock and Soil Mechanics , 2013 , 34 ( 6 ): 1579 - 1585 . (in Chinese)
李志浩 , 肖世国 . 不同运动模式的悬臂式挡墙地震永久位移算法 [J]. 岩土力学 , 2021 , 42 ( 3 ): 723 - 734 .
LI Z H , XIAO S G . Calculation method for seismic permanent displacement of cantilever retaining walls considering different movement modes [J]. Rock and Soil Mechanics , 2021 , 42 ( 3 ): 723 - 734 . (in Chinese)
金亚兵 , 周志雄 . 挡土墙(桩)前堆载反压或预留土体分析与计算 [J]. 岩土力学 , 1999 , 20 ( 3 ): 56 - 60, 65 .
JIN Y B , ZHOU Z X . Analysis and calculation method of surcharge reaction and remaining soils near retaining wall [J]. Rock and Soil Mechanics , 1999 , 20 ( 3 ): 56 - 60, 65 . (in Chinese)
0
Views
5
下载量
0
CSCD
- L-PDFDownload
- Meta-XMLDownload
- BibTeXDownload
- EndnoteDownload
- RefMan Download
- NoteExpressDownload
- NoteFirstDownload
Publicity Resources
Related Articles
Related Author
Related Institution
AI问答- Address：Journals Department, Chongqing University, 174 Shazhengjie, Chongqing 400044, P.R.China Postal code：400044
- Tel：+86-23-65111322 Email：xuebao@cqu.edu.cn
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.