Article(id=1236334634200519317, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236334630450819368, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2023.06.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1688054400000, receivedDateStr=2023-06-30, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772694746780, onlineDateStr=2026-03-05, pubDate=1701360000000, pubDateStr=2023-12-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772694746780, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772694746780, creator=13701087609, updateTime=1772694746780, updator=13701087609, issue=Issue{id=1236334630450819368, tenantId=1146029695717560320, journalId=1235980550691926019, year='2023', volume='43', issue='6', pageStart='1', pageEnd='183', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772694745886, creator=13701087609, updateTime=1772694896382, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236335261735506524, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236334630450819368, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236335261735506525, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236334630450819368, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=34, endPage=40, ext={EN=ArticleExt(id=1236334634565423769, articleId=1236334634200519317, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Experimental Study on Mechanical Properties of Surrounding Silty Clay of Foundation Pit with Different Stress Paths, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=

Based on a deep foundation pit project for Pazhou Station of Guangzhou Metro, numerical simulation was conducted with FLAC3D finite element software for foundation pit excavation. Shear test schemes with different stress paths were prepared based on the stress state of the surrounding soil of the foundation pit, and the influence of different stress path on the mechanical properties of the soil was also studied. The results indicate that stress path can bring significant impact to the stress-strain relationship, pore pressure, and shear strength indicators of the soil. The shear strength of the soil in consideration of the unloading stress path of the foundation pit is lower than the shear strength obtained from conventional tests.

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依托广州地铁琶洲站深基坑项目,采用FLAC3D有限元软件对基坑开挖进行数值模拟,基于基坑工程周围土体的应力状态制定不同应力路径剪切试验方案,研究了不同应力路径条件对土体力学性状的影响。结果表明,应力路径可对土体的应力-应变关系、孔隙压力、抗剪强度指标产生较大影响;考虑基坑卸荷应力路径土体的抗剪强度低于常规试验所得土体抗剪强度。

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王利军(1971—),男,山西兴县人,高级工程师,主要从事地铁工程建设与管理工作。

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王利军(1971—),男,山西兴县人,高级工程师,主要从事地铁工程建设与管理工作。

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王利军(1971—),男,山西兴县人,高级工程师,主要从事地铁工程建设与管理工作。

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不同应力路径下基坑周边粉质黏土力学性状试验研究
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王利军 1 , 刘洋 2 , 何忠明 3 , 王盘盘 3
矿冶工程杂志 | 采矿 2023,43(6): 34-40
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矿冶工程杂志 | 采矿 2023, 43(6): 34-40
不同应力路径下基坑周边粉质黏土力学性状试验研究
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王利军1, 刘洋2, 何忠明3, 王盘盘3
作者信息
  • 1.广州地铁集团有限公司,广东 广州 510380
  • 2.平江县交通局,湖南 平江 414000
  • 3.长沙理工大学 交通运输工程学院,湖南 长沙 410114
  • 王利军(1971—),男,山西兴县人,高级工程师,主要从事地铁工程建设与管理工作。

Experimental Study on Mechanical Properties of Surrounding Silty Clay of Foundation Pit with Different Stress Paths
Lijun WANG1, Yang LIU2, Zhongming HE3, Panpan WANG3
Affiliations
  • 1.Guangzhou Metro Group Co Ltd, Guangzhou 510380, Guangdong, China
  • 2.Pingjiang County Transportation Bureau, Pingjiang 414000, Hunan, China
  • 3.School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, Hunan, China
出版时间: 2023-12-01 doi: 10.3969/j.issn.0253-6099.2023.06.008
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依托广州地铁琶洲站深基坑项目,采用FLAC3D有限元软件对基坑开挖进行数值模拟,基于基坑工程周围土体的应力状态制定不同应力路径剪切试验方案,研究了不同应力路径条件对土体力学性状的影响。结果表明,应力路径可对土体的应力-应变关系、孔隙压力、抗剪强度指标产生较大影响;考虑基坑卸荷应力路径土体的抗剪强度低于常规试验所得土体抗剪强度。

基坑开挖  /  数值模拟  /  应力路径  /  三轴试验  /  粉质黏土  /  土力学性状

Based on a deep foundation pit project for Pazhou Station of Guangzhou Metro, numerical simulation was conducted with FLAC3D finite element software for foundation pit excavation. Shear test schemes with different stress paths were prepared based on the stress state of the surrounding soil of the foundation pit, and the influence of different stress path on the mechanical properties of the soil was also studied. The results indicate that stress path can bring significant impact to the stress-strain relationship, pore pressure, and shear strength indicators of the soil. The shear strength of the soil in consideration of the unloading stress path of the foundation pit is lower than the shear strength obtained from conventional tests.

foundation pit excavation  /  numerical simulation  /  stress path  /  triaxial test  /  silty clay  /  mechanical properties
王利军, 刘洋, 何忠明, 王盘盘. 不同应力路径下基坑周边粉质黏土力学性状试验研究. 矿冶工程杂志, 2023 , 43 (6) : 34 -40 . DOI: 10.3969/j.issn.0253-6099.2023.06.008
Lijun WANG, Yang LIU, Zhongming HE, Panpan WANG. Experimental Study on Mechanical Properties of Surrounding Silty Clay of Foundation Pit with Different Stress Paths[J]. Mining and Metallurgical Engineering, 2023 , 43 (6) : 34 -40 . DOI: 10.3969/j.issn.0253-6099.2023.06.008
  • 广州地铁集团有限公司科研项目(HT200856)
  • 长沙理工大学研究生科研创新项目(CXCLY2022014)
2023年第43卷第6期
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doi: 10.3969/j.issn.0253-6099.2023.06.008
  • 接收时间:2023-06-30
  • 首发时间:2026-03-05
  • 出版时间:2023-12-01
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  • 收稿日期:2023-06-30
基金
广州地铁集团有限公司科研项目(HT200856)
长沙理工大学研究生科研创新项目(CXCLY2022014)
作者信息
    1.广州地铁集团有限公司,广东 广州 510380
    2.平江县交通局,湖南 平江 414000
    3.长沙理工大学 交通运输工程学院,湖南 长沙 410114
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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