Article(id=1308453933295366920, tenantId=1146029695717560320, journalId=1146123302524792850, issueId=1308453915104665783, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1672-6073.2026.02.011, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1736956800000, receivedDateStr=2025-01-16, revisedDate=1759939200000, revisedDateStr=2025-10-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1789889327595, onlineDateStr=2026-09-20, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789889327595, onlineIssueDateStr=2026-09-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789889327595, creator=13701087609, updateTime=1789889327595, 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=89, endPage=96, ext={EN=ArticleExt(id=1308453933521859337, articleId=1308453933295366920, tenantId=1146029695717560320, journalId=1146123302524792850, language=EN, title=Impact of Straddle-Type Viaduct Construction on Existing Metro Tunnels, columnId=1152669336394183038, journalTitle=Urban Rapid Rail Transit, columnName=Civil Engineering Technology, runingTitle=null, highlight=null, articleAbstract=

To investigate the dynamic impact of straddle-type viaduct construction on existing metro tunnels, this study takes the Wangsheren Station to Wangsheren North Station section of Jinan Metro Line 6 as the engineering background. Field tests and numerical simulations were conducted to systematically analyze the deformation patterns of tunnels under the multi-stage coupled effects of "pile foundation excavation, foundation pit unloading, and bridge superstructure loading." The findings reveal that: (1) Foundation pit excavation induces significant tunnel uplift (maximum 4.62 mm), accompanied by horizontal contraction (maximum 1.74 mm) and vertical expansion (maximum 3.25 mm). After bridge loading, the tunnel subsides, with horizontal expansion and vertical convergence observed. (2) The clearance between the tunnel and foundation pit significantly influences uplift deformation: as the clearance increases from 6.7 m to 20 m, the uplift decreases from 5.74 mm to 0.90 mm (approaching zero at ≥15 m), while subsidence remains stable at approximately 5.2 mm. A clearance of ≥12 m is recommended for risk mitigation. (3) Stratigraphic characteristics dominate deformation responses: silty clay layers exhibit greater uplift during excavation (+1.2 mm), whereas gravelly sand layers experience more pronounced subsidence during bridge operation (–1.5 mm). Deformations in moderately and slightly weathered rock strata are negligible. (4) Interval construction of multiple pile caps reduces subsequent excavation-induced uplift (with a 12% reduction for the second pile cap), supporting a "alternate excavation" construction strategy. Innovatively, this study proposes a deformation prediction model based on stratigraphic heterogeneity, which overcomes the limitations of traditional homogeneous assumptions and provides a theoretical foundation for optimizing the design and risk assessment of straddle-type viaduct projects.

, authors=Chuan LI¹, Ningning LI², Jin YAN², Tongtong WANG³, Jiancheng SUN⁴, Kerui ZHU⁵, Xuxu YANG⁶, authorsList=Chuan LI, Ningning LI, Jin YAN, Tongtong WANG, Jiancheng SUN, Kerui ZHU, Xuxu YANG, authorCompany=null, correspAuthors=Jin YAN, 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=1308453933903541002, articleId=1308453933295366920, tenantId=1146029695717560320, journalId=1146123302524792850, language=CN, title=骑跨式高架桥施工对既有地铁隧道的影响, columnId=1152669336603898239, journalTitle=都市快轨交通, columnName=土建技术, runingTitle=null, highlight=null, articleAbstract=

为探究骑跨式高架桥施工对既有地铁隧道的动态影响，以济南地铁6号线王舍人站—王舍人北站区间为工程背景，结合现场试验与数值模拟方法，系统分析骑跨式高架桥施工时“桩基-基坑-桥梁荷载”多阶段耦合作用下的隧道变形规律。研究结果表明：1）基坑开挖引发隧道显著上浮（最大4.62 mm），水平收缩（最大1.74 mm）与竖向膨胀（最大3.25 mm）；桥梁加载后，隧道下沉，水平方向转为膨胀，竖向收敛；2）隧道净距对基坑开挖影响显著：净距从6.7 m增至20 m时，上浮量由5.74 mm降至0.90 mm（净距大于或等于15 m时上浮量趋近于0），而下沉量稳定于5.2 mm左右，建议净距大于或等于12 m以控制风险。3）地层特性主导变形响应：粉质黏土地层在基坑阶段上浮量更大（+1.2 mm），砾砂层在桥梁运营阶段下沉更显著（–1.5 mm），而中风化及微风化岩层变形可忽略。4）多承台间隔施工可降低后续开挖引起的上浮量（第二承台上浮减少12%），推荐“隔一挖一”施工策略。

, authors=李川¹, 李宁宁², 闫瑾², 王彤彤³, 孙建成⁴, 朱可睿⁵, 杨旭旭⁶, authorsList=李川, 李宁宁, 闫瑾, 王彤彤, 孙建成, 朱可睿, 杨旭旭, authorCompany=null, correspAuthors=闫瑾, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=I1gn7GPiuI9injWjlWvOtA==, magXml=I18/7AaqirmF5NK5aYJQCA==, pdfUrl=null, pdf=20x7WWqBm97R35ICCfE/4Q==, pdfFileSize=6160193, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=YXjwVbfXavF20bsiSbKqgg==, mapNumber=null, fund=null)}, authors=[Author(id=1308453934696264478, tenantId=1146029695717560320, journalId=1146123302524792850, articleId=1308453933295366920, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ynlichuan@126.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1308453934759179040, tenantId=1146029695717560320, journalId=1146123302524792850, articleId=1308453933295366920, authorId=1308453934696264478, language=EN, stringName=Chuan LI, firstName=Chuan, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1.Qingdao Urban Renewal Development Co., Ltd., Qingdao, Shandong 266035, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1308453934822093601, tenantId=1146029695717560320, journalId=1146123302524792850, articleId=1308453933295366920, authorId=1308453934696264478, language=CN, stringName=李川, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=¹, address=^1．青岛城市更新发展有限公司，山东 青岛 266035, bio={"content":"

李川，男，硕士，高级工程师，主要从事城市市政工程及轨道交通工程建设、施工的技术管理，ynlichuan@126.com

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李川，男，硕士，高级工程师，主要从事城市市政工程及轨道交通工程建设、施工的技术管理，ynlichuan@126.com

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