Article(id=1308453939486150970, tenantId=1146029695717560320, journalId=1146123302524792850, issueId=1308453915104665783, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1672-6073.2026.02.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1747929600000, receivedDateStr=2025-05-23, revisedDate=1766678400000, revisedDateStr=2025-12-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1789889329072, onlineDateStr=2026-09-20, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789889329072, onlineIssueDateStr=2026-09-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789889329072, creator=13701087609, updateTime=1789889329072, updator=13701087609, issue=Issue{id=1308453915104665783, tenantId=1146029695717560320, journalId=1146123302524792850, year='2026', volume='39', issue='2', pageStart='1', pageEnd='160', issueExtLink='null', onlineDate='null', pubDate='1775750400000', pubDateStr='2026-04-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789889323259, creator='13701087609', updateTime=1789889766020, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1308455772237615687, tenantId=1146029695717560320, journalId=1146123302524792850, issueId=1308453915104665783, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1308455772237615688, tenantId=1146029695717560320, journalId=1146123302524792850, issueId=1308453915104665783, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=112, endPage=119, ext={EN=ArticleExt(id=1308453939884609851, articleId=1308453939486150970, tenantId=1146029695717560320, journalId=1146123302524792850, language=EN, title=Analysis of Differential Deformation Characteristics in Variable Cross-Section Metro Tunnels Induced by Asymmetric Backfill Loading, columnId=1152669336394183038, journalTitle=Urban Rapid Rail Transit, columnName=Civil Engineering Technology, runingTitle=null, highlight=null, articleAbstract=
Surface loading can cause certain deformations in subway tunnels, and excessive deformation will affect the safe operation of subway tunnels. To study the influence of asymmetric surface filling on variable-section subway tunnels, a finite element model of horseshoe-shaped and box-shaped tunnel structures was established based on the road backfilling reconstruction project above the side of a certain underground section of Shijiazhuang Metro. The surface settlement and tunnel stress-deformation patterns during road backfilling construction were analyzed and compared with field monitoring results for verification. Furthermore, the effects of parameters such as tunnel burial depth, loading magnitude, and loading dimensions on the underlying variable-section tunnel were discussed. The results show that: under asymmetric filling, the surface soil displacement field approximately exhibits a "V"-shaped settlement; the maximum surface settlements in the tunnel areas of horseshoe-shaped and box-shaped sections are 15.85 mm and 27.17 mm, respectively; tunnel structural deformation is dominated by vertical settlement with relatively small horizontal deformation; compared with the horseshoe-shaped section tunnel, the box-shaped section tunnel is more significantly affected by surface loading; the deformation of the tunnel at the intersection between the horseshoe-shaped and box-shaped sections shows a certain abrupt change, and cracking and water leakage issues in this junction area require close monitoring during construction; loading magnitude and loading range are positively correlated with tunnel vertical settlement, while the horizontal distance between the loading center and tunnel axis and tunnel burial depth are negatively correlated with tunnel vertical settlement; the loading range has a significant influence on the distribution range of tunnel settlement. When the tunnel burial depth exceeds 24 m or the horizontal distance between the loading centerline and tunnel axis exceeds 50 m, surface loading has almost no effect on tunnel settlement.
, authors=Jin GUO, Benkang JIAO, authorsList=Jin GUO, Benkang JIAO, authorCompany=null, correspAuthors=Benkang JIAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1308453941549748540, articleId=1308453939486150970, tenantId=1146029695717560320, journalId=1146123302524792850, language=CN, title=非对称填土荷载诱发地铁变截面隧道差异变形特征分析, columnId=1152669336603898239, journalTitle=都市快轨交通, columnName=土建技术, runingTitle=null, highlight=null, articleAbstract=
地表堆载导致地铁隧道产生一定的变形,过大的变形影响地铁隧道安全运营。为研究地表非对称填土对变截面地铁隧道的影响,以石家庄地铁某地下区间侧上方道路回填改造工程为背景,建立马蹄形及箱形断面隧道结构有限元模型,对道路回填施工中的地表沉降、隧道受力变形规律进行分析,并与现场监测结果进行对比验证。进一步探讨隧道埋深、堆载大小、堆载尺寸等参数对下方变截面隧道的影响。结果表明:在非对称填土作用下,地表土体位移场近似表现为“V”形沉降,马蹄形断面、箱形断面隧道区域地表土体最大沉降量分别为15.85、27.17 mm,隧道结构变形以竖向沉降为主,水平变形较小,相比于马蹄形截面隧道,箱形截面隧道受地表堆载影响更为明显;在马蹄形断面与箱形断面相交处隧道的变形量有一定突变,该结合部位的隧道结构开裂、渗漏水问题需要在施工时进行密切监控;堆载大小、堆载范围与隧道的竖向沉降呈正相关,堆载中心与隧道轴线水平距离、隧道埋深与隧道的竖向沉降呈负相关,堆载范围对隧道沉降的分布范围影响显著。当隧道埋深超过24 m或堆载中心线与隧道轴线之间的水平距离超过50 m时,地表堆载对隧道的沉降几乎没有影响。
, authors=郭金, 焦奔康, authorsList=郭金, 焦奔康, authorCompany=null, correspAuthors=焦奔康, authorNote=
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