Article(id=1273953336253506473, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, articleNumber=null, orderNo=null, doi=10.20174/j.JUSE.2026.02.31, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1749916800000, receivedDateStr=2025-06-15, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1781663744270, onlineDateStr=2026-06-17, pubDate=1776614400000, pubDateStr=2026-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1781663744270, onlineIssueDateStr=2026-06-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1781663744270, creator=13701087609, updateTime=1781663744270, updator=13701087609, issue=Issue{id=1273953231114887613, tenantId=1146029695717560320, journalId=1272209045839646724, year='2026', volume='22', issue='2', pageStart='377', pageEnd='752', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1781663719203, creator=13701087609, updateTime=1781663760928, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1273953406235467954, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1273953406235467955, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=696, endPage=705, ext={EN=ArticleExt(id=1273953336429667243, articleId=1273953336253506473, tenantId=1146029695717560320, journalId=1272209045839646724, language=EN, title=Study on Deformation and Redundancy of Special-shaped Soil-rock Foundation Pit with Suspended Piles, columnId=null, journalTitle=Chinese Journal of Underground Space and Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Based on the actual project, a three-dimensional simulation model is constructed to study the deformation and stress characteristics of the special-shaped soil-rock foundation pit excavation of the suspended pile. By adopting bar demolition method, a strength redundancy expression method based on the ultimate bearing capacity of the inner support is proposed, and two inner support importance evaluation indexes of the associated bar and the correlation coefficient are proposed. The findings indicate: (1) Deformation of special-shaped soil-rock foundation pit with the suspended pile mainly concentrates in the upper soil layers, the position of the positive angle and the middle of the longest side of the foundation pit., achieving a peak value of 17.02 mm. This deformation is linked to the geometric composition and stiffness distribution of the support system itself. Notably, the upper deformation of the supporting structure at the positive corner of the foundation pit is larger, and the influence range is about 2 times that at the negative corner; (2) The strength redundancy based on ultimate bearing capacity can comprehensively and quantitatively evaluate the redundancy of deep foundation pits, where the associated bar can pinpoint which component would be most affected after damage occurs, while the correlation coefficient can, to some extent, reflect critical components within support structures; (3) The redundancy of the inner support based on the ultimate bearing capacity is related to its own load and the arrangement of adjacent support bars. The minimum is 4.18. The associated bar are mainly concentrated in the adjacent bars. In the design of the correlation coefficient, should be optimized to decrease the correlation coefficient of the bar and improve the overall reliability of the support structure.

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基于实际工程,构建三维仿真模型,研究了土岩地层吊脚桩异形基坑开挖变形与受力特征,并基于拆除杆件法,提出基于支撑极限承载力的强度冗余度表达方式,并建立了关联杆件与关联系数两种杆件重要程度评价指标。结果表明:(1)异形土岩地层吊脚桩基坑变形主要集中于上部土层段、阳角点与基坑长边中段,最大值为17.02 mm,且与支护体系自身几何构成、刚度分布相关,土岩地层基坑阳角位置支护结构上部变形更大,影响范围约为阴角处的2倍;(2)基于极限承载力的强度冗余度指标可以全面与量化地评价基坑冗余度,关联杆件能明确构件受损后影响最大支撑杆件,关联系数可以一定程度反映支护结构关键杆件;(3)基于极限承载力的支撑杆件冗余度大小与自身承担荷载、相邻支撑杆件布置存在关系,最小为4.18,联杆件主要集中在相邻杆件,关联系数设计中应优化设计降低杆件关联系数,提高支护结构整体可靠度。

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周小涵(1988—),男,重庆人,博士,副研究员,主要从事岩土工程、地下工程领域研究工作。E-mail:
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刘新荣(1969—),男,浙江开化人,博士,教授,主要从事岩土工程、地下工程领域教学与研究工作。E-mail:

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刘新荣(1969—),男,浙江开化人,博士,教授,主要从事岩土工程、地下工程领域教学与研究工作。E-mail:

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土岩地层吊脚桩异形基坑开挖变形与冗余度研究
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刘新荣 1 , 王自强 1 , 李隆平 2 , 周小涵 1 , 王林枫 1
地下空间与工程学报 | 设计、施工、监测 2026,22(2): 696-705
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地下空间与工程学报 | 设计、施工、监测 2026, 22(2): 696-705
土岩地层吊脚桩异形基坑开挖变形与冗余度研究
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刘新荣1 , 王自强1, 李隆平2, 周小涵1 , 王林枫1
作者信息
  • 1.重庆大学 土木工程学院,重庆 400045
  • 2.中铁大桥勘测设计院集团有限公司,武汉 430056
  • 刘新荣(1969—),男,浙江开化人,博士,教授,主要从事岩土工程、地下工程领域教学与研究工作。E-mail:

通讯作者:

周小涵(1988—),男,重庆人,博士,副研究员,主要从事岩土工程、地下工程领域研究工作。E-mail:
Study on Deformation and Redundancy of Special-shaped Soil-rock Foundation Pit with Suspended Piles
Xinrong Liu1 , Ziqiang Wang1, Longping Li2, Xiaohan Zhou1 , Linfeng Wang1
Affiliations
  • 1.College of Civil Engineering, Chongqing University, Chongqing 400045, P. R. China
  • 2.China Railway Major Bridge Reconnaissance and Design Institute Co., Ltd., Wuhan 430056, P. R. China
出版时间: 2026-04-20 doi: 10.20174/j.JUSE.2026.02.31
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基于实际工程,构建三维仿真模型,研究了土岩地层吊脚桩异形基坑开挖变形与受力特征,并基于拆除杆件法,提出基于支撑极限承载力的强度冗余度表达方式,并建立了关联杆件与关联系数两种杆件重要程度评价指标。结果表明:(1)异形土岩地层吊脚桩基坑变形主要集中于上部土层段、阳角点与基坑长边中段,最大值为17.02 mm,且与支护体系自身几何构成、刚度分布相关,土岩地层基坑阳角位置支护结构上部变形更大,影响范围约为阴角处的2倍;(2)基于极限承载力的强度冗余度指标可以全面与量化地评价基坑冗余度,关联杆件能明确构件受损后影响最大支撑杆件,关联系数可以一定程度反映支护结构关键杆件;(3)基于极限承载力的支撑杆件冗余度大小与自身承担荷载、相邻支撑杆件布置存在关系,最小为4.18,联杆件主要集中在相邻杆件,关联系数设计中应优化设计降低杆件关联系数,提高支护结构整体可靠度。

冗余度  /  土岩地层  /  异形基坑  /  吊脚桩  /  变形响应

Based on the actual project, a three-dimensional simulation model is constructed to study the deformation and stress characteristics of the special-shaped soil-rock foundation pit excavation of the suspended pile. By adopting bar demolition method, a strength redundancy expression method based on the ultimate bearing capacity of the inner support is proposed, and two inner support importance evaluation indexes of the associated bar and the correlation coefficient are proposed. The findings indicate: (1) Deformation of special-shaped soil-rock foundation pit with the suspended pile mainly concentrates in the upper soil layers, the position of the positive angle and the middle of the longest side of the foundation pit., achieving a peak value of 17.02 mm. This deformation is linked to the geometric composition and stiffness distribution of the support system itself. Notably, the upper deformation of the supporting structure at the positive corner of the foundation pit is larger, and the influence range is about 2 times that at the negative corner; (2) The strength redundancy based on ultimate bearing capacity can comprehensively and quantitatively evaluate the redundancy of deep foundation pits, where the associated bar can pinpoint which component would be most affected after damage occurs, while the correlation coefficient can, to some extent, reflect critical components within support structures; (3) The redundancy of the inner support based on the ultimate bearing capacity is related to its own load and the arrangement of adjacent support bars. The minimum is 4.18. The associated bar are mainly concentrated in the adjacent bars. In the design of the correlation coefficient, should be optimized to decrease the correlation coefficient of the bar and improve the overall reliability of the support structure.

redundancy  /  soil rock stratum  /  special-shaped foundation pit  /  suspended pile  /  deformation response
刘新荣, 王自强, 李隆平, 周小涵, 王林枫. 土岩地层吊脚桩异形基坑开挖变形与冗余度研究. 地下空间与工程学报, 2026 , 22 (2) : 696 -705 . DOI: 10.20174/j.JUSE.2026.02.31
Xinrong Liu, Ziqiang Wang, Longping Li, Xiaohan Zhou, Linfeng Wang. Study on Deformation and Redundancy of Special-shaped Soil-rock Foundation Pit with Suspended Piles[J]. Chinese Journal of Underground Space and Engineering, 2026 , 22 (2) : 696 -705 . DOI: 10.20174/j.JUSE.2026.02.31
  • 国家自然科学基金(41972266)
  • 重庆市研究生科研创新项目(CYS22047)
2026年第22卷第2期
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doi: 10.20174/j.JUSE.2026.02.31
  • 接收时间:2025-06-15
  • 首发时间:2026-06-17
  • 出版时间:2026-04-20
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  • 收稿日期:2025-06-15
基金
国家自然科学基金(41972266)
重庆市研究生科研创新项目(CYS22047)
作者信息
    1.重庆大学 土木工程学院,重庆 400045
    2.中铁大桥勘测设计院集团有限公司,武汉 430056

通讯作者:

周小涵(1988—),男,重庆人,博士,副研究员,主要从事岩土工程、地下工程领域研究工作。E-mail:
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2种不同金属材料的力学参数

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种数
Number of
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种数
Number of
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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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