Article(id=1156986622068741013, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156963927277003616, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2401918, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1710691200000, receivedDateStr=2024-03-18, revisedDate=1732204800000, revisedDateStr=2024-11-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1753776706473, onlineDateStr=2025-07-29, pubDate=1742227200000, pubDateStr=2025-03-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753776706473, onlineIssueDateStr=2025-07-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753776706473, creator=13701087609, updateTime=1753776706473, updator=13701087609, issue=Issue{id=1156963927277003616, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='8', pageStart='3079', pageEnd='3528', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1753771295613, creator=13701087609, updateTime=1753777038876, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156988016305726153, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156963927277003616, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156988016305726154, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156963927277003616, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=3382, endPage=3390, ext={EN=ArticleExt(id=1156986623582884760, articleId=1156986622068741013, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Load-displacement Characteristics and Bearing Capacity Prediction on Anti-floating Anchor of Screw-thread Steel Bars, columnId=1156963932482130535, journalTitle=Science Technology and Engineering, columnName=Architectural Science, runingTitle=null, highlight=null, articleAbstract=
Based on the field pull destructive test of 9 anti-floating anchor of screw-thread steel bars in a foundation pit anti-float project in Qingdao, the load-displacement characteristics of anti-floating anchor of screw-thread steel bars under different anchoring lengths were studied, and the bearing performance of anti-floating anchor of screw-thread steel bars was determined. The results show that the ultimate uplift bearing capacity of the anti-floating anchor of screw-thread steel bars with the same diameter is 681 kN for the 3.0 m and 3.5 m anchors anchored in medium-weathered granite, and 1 004 kN for the 4.0 m anchors anchored in medium-weathered granite. At the initial stage of loading, the displacement of anchor head increase linearly, and with the increase of load, the displacement of anchor head increase abruptly, all of which exceed 50 mm. The agreement between the hyperbolic function and the power function load-displacement curve model and the measured value is good when the load level is low, but is relatively poor when the failure is near, and the predicted ultimate tensile strength is much different from the measured value. The exponential function load-displacement curve model can predict the ultimate uplift bearing capacity of the test anchors with high accuracy and good agreement with the measured curve.
, correspAuthors=Nan 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, authorCompany=null, fund=null, authors=null, authorsList=Huan-long DU, Zhong-sheng WANG, Nan YAN, Cheng-lu LÜ, Xiao-yu BAI, Shi-xiang JIA, Gan SUN, Lei ZHU, Peng WANG), CN=ArticleExt(id=1156986725219258410, articleId=1156986622068741013, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=精轧螺纹钢抗浮锚杆荷载-位移特性及承载力预测, columnId=1154013916129648643, journalTitle=科学技术与工程, columnName=建筑科学, runingTitle=null, highlight=null, articleAbstract=
基于青岛某基坑抗浮工程中9 根精轧螺纹钢抗浮锚杆的现场拉拔破坏性试验,研究不同锚固长度下精轧螺纹钢抗浮锚杆的荷载-位移特性,明确精轧螺纹钢抗浮锚杆的承载性能。结果表明:相同直径的精轧螺纹钢抗浮锚杆,锚入中风化花岗岩3. 0 m 与3. 5 m 的锚杆其极限抗拔承载力为681 kN,锚入中风化花岗岩4. 0 m 的锚杆其极限抗拔承载力为1 004 kN;加载初期,锚头位移呈线性增加,随荷载增加,锚头位移突增,均超过50 mm。双曲线函数与幂函数荷载-位移曲线模型与实测值在荷载水平较低时吻合度较好,临近破坏时吻合度相对较差,且极限抗拔承载力预测值较实测值偏差较大;指数函数荷载-位移曲线模型对本次试验锚杆的极限抗拔承载力预测精度较高,与实测值曲线吻合度较好。
, correspAuthors=闫楠, authorNote=null, correspAuthorsNote=
*闫楠(1982-),女,汉族,山东潍坊人,博士,副教授。研究方向:环境岩土工程及基础工程。E-mail: yannan0527@163.com。
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杜焕龙(2000—),男,汉族,山东济南人,硕士研究生。研究方向:地基与基础工程。E-mail:1944180846@qq.com。
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1 School of Civil Engineering Qingdao University of Technology Qingdao 266520 China
2 Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources Qingdao 266000 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1156986736543879343, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986736409661610, language=CN, stringName=杜焕龙, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 青岛理工大学 土木工程学院 青岛 266520
2 自然资源部滨海城市地下空间地质安全重点实验室 青岛 266000, bio={"content":"
杜焕龙(2000—),男,汉族,山东济南人,硕士研究生。研究方向:地基与基础工程。E-mail:1944180846@qq.com。
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杜焕龙(2000—),男,汉族,山东济南人,硕士研究生。研究方向:地基与基础工程。E-mail:1944180846@qq.com。
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2 自然资源部滨海城市地下空间地质安全重点实验室 青岛 266000)])]), Author(id=1156986736837480634, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=yannan0527@163.com, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1156986738347430080, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986736837480634, language=EN, stringName=Nan YAN, firstName=Nan, middleName=null, lastName=YAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 School of Civil Engineering Qingdao University of Technology Qingdao 266520 China
2 Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources Qingdao 266000 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1156986738418733249, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986736837480634, language=CN, stringName=闫楠, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 青岛理工大学 土木工程学院 青岛 266520
2 自然资源部滨海城市地下空间地质安全重点实验室 青岛 266000, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1156986735927316627, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, xref=1, ext=[AuthorCompanyExt(id=1156986735931510932, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, companyId=1156986735927316627, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 自然资源部滨海城市地下空间地质安全重点实验室 青岛 266000)])]), Author(id=1156986738469064900, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1156986738611671240, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986738469064900, language=EN, stringName=Cheng-lu LÜ, firstName=Cheng-lu, middleName=null, lastName=LÜ, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 Qingdao Shiyun Construction Machinery Co., Ltd. Qingdao 266042 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1156986738729111758, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986738469064900, language=CN, stringName=吕承禄, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 青岛施运机械施工有限责任公司 青岛 266042, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1156986736116060316, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, xref=3, ext=[AuthorCompanyExt(id=1156986736120254621, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, companyId=1156986736116060316, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 School of Civil Engineering Qingdao University of Technology Qingdao 266520 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1156986738913661145, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986738775249106, language=CN, stringName=白晓宇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources Qingdao 266000 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1156986739207262438, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, authorId=1156986738963992798, language=CN, stringName=贾世祥, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Position diagram of test bolt, figureFileSmall=JVS8U05DUmlfUMnBPbvm7A==, figureFileBig=9PWrOObSUrLT5gF8PhAwvA==, tableContent=null), ArticleFig(id=1156986750846456244, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=图1, caption=
试验锚杆位置示意图, figureFileSmall=JVS8U05DUmlfUMnBPbvm7A==, figureFileBig=9PWrOObSUrLT5gF8PhAwvA==, tableContent=null), ArticleFig(id=1156986750905176502, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Fig. 2, caption=
Schematic diagram and physical diagram of the loading device, figureFileSmall=MgyOJbl7eeEWHdU8XyafGQ==, figureFileBig=TDR8rURbzD7PN5ztY4QvbA==, tableContent=null), ArticleFig(id=1156986750968091063, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=图2, caption=
加载装置示意图及实物图, figureFileSmall=MgyOJbl7eeEWHdU8XyafGQ==, figureFileBig=TDR8rURbzD7PN5ztY4QvbA==, tableContent=null), ArticleFig(id=1156986751031005625, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Fig. 3, caption=
Failure load and the ultimate uplift bearing capacity of anti-floating anchor, figureFileSmall=78CIu34o6kAQMHAdy9yn7Q==, figureFileBig=8JakL7g0YUVds/OjvFIx4w==, tableContent=null), ArticleFig(id=1156986751081337275, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=图3, caption=
抗浮锚杆破坏荷载与极限抗拔承载力, figureFileSmall=78CIu34o6kAQMHAdy9yn7Q==, figureFileBig=8JakL7g0YUVds/OjvFIx4w==, tableContent=null), ArticleFig(id=1156986751131668925, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Fig. 4, caption=
Load-displacement curve of anti-floating anchor, figureFileSmall=U51LLkPTzDVDkvHTMsLQnQ==, figureFileBig=alE7G5F7KOXvTw270VKRXQ==, tableContent=null), ArticleFig(id=1156986751182000574, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=图4, caption=
抗浮锚杆杆体荷载-位移曲线, figureFileSmall=U51LLkPTzDVDkvHTMsLQnQ==, figureFileBig=alE7G5F7KOXvTw270VKRXQ==, tableContent=null), ArticleFig(id=1156986751249109439, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Fig. 5, caption=
Comparison of load-displacement curve models, figureFileSmall=x/TKFK1cw8L0fxu4c/yzdg==, figureFileBig=idYQ3h1eBhYqt1CR+OfDCw==, tableContent=null), ArticleFig(id=1156986751316218304, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=图5, caption=
荷载-位移曲线模型对比, figureFileSmall=x/TKFK1cw8L0fxu4c/yzdg==, figureFileBig=idYQ3h1eBhYqt1CR+OfDCw==, tableContent=null), ArticleFig(id=1156986751370744257, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Table 1, caption=
The main physical and mechanical indexes of foundation pit rock, figureFileSmall=null, figureFileBig=null, tableContent=
| 土层 | 平均厚度 $/\mathrm{m}$ | 重度 $/\left({\mathrm{{kN}}\cdot {\mathrm{m}}^{-3}}\right)$ | 黏聚力/kPa | 内摩擦角/(${}^{\circ }$) | 模量/MPa |
| 第①层杂填土 | 5.76 | 15.0 | 5.0 | 10.0 | - |
| 第②层粗砂砾 | 3.65 | 18.0 | 4.0 | 18.0 | 10. 0 (变形模量) |
| 第③层粉质黏土 | 1.43 | 18.8 | 13.2 | 5.8 | 2.82 (压缩模量) |
| 第④层粉质黏土 | 1.13 | 19.7 | 32.9 | 14.9 | 5.77 (压缩模量) |
| 第⑤层粗砾砂 | 4.35 | 21.0 | 2.5 | 25.0 | 20. 0 (变形模量) |
| 第⑥层全风化花岗岩 | 2.13 | 21.0 | 3.0 | 30.0 | 25.0(变形模量) |
| 第 ⑦层强风化花岗岩 | 1.53 | 24.0 | 2.0 | 35.0 | 40. 0 (变形模量) |
| 第 ⑧ 层中风化花岗岩 | - | 27.0 | - | 50.0 | 3 000.0 (弹性模量) |
), ArticleFig(id=1156986751437853122, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=表1, caption=
基坑岩层主要物理力学指标, figureFileSmall=null, figureFileBig=null, tableContent=
| 土层 | 平均厚度 $/\mathrm{m}$ | 重度 $/\left({\mathrm{{kN}}\cdot {\mathrm{m}}^{-3}}\right)$ | 黏聚力/kPa | 内摩擦角/(${}^{\circ }$) | 模量/MPa |
| 第①层杂填土 | 5.76 | 15.0 | 5.0 | 10.0 | - |
| 第②层粗砂砾 | 3.65 | 18.0 | 4.0 | 18.0 | 10. 0 (变形模量) |
| 第③层粉质黏土 | 1.43 | 18.8 | 13.2 | 5.8 | 2.82 (压缩模量) |
| 第④层粉质黏土 | 1.13 | 19.7 | 32.9 | 14.9 | 5.77 (压缩模量) |
| 第⑤层粗砾砂 | 4.35 | 21.0 | 2.5 | 25.0 | 20. 0 (变形模量) |
| 第⑥层全风化花岗岩 | 2.13 | 21.0 | 3.0 | 30.0 | 25.0(变形模量) |
| 第 ⑦层强风化花岗岩 | 1.53 | 24.0 | 2.0 | 35.0 | 40. 0 (变形模量) |
| 第 ⑧ 层中风化花岗岩 | - | 27.0 | - | 50.0 | 3 000.0 (弹性模量) |
), ArticleFig(id=1156986751513350595, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Table 2, caption=
Main design parameters of bolts, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆编号 | 杆体直 径/mm | 锚杆总 长/mm | 锚固段长 度/mm | 锚入中风化花 岗岩长度/mm | 加载段长 度/mm |
| S3.0-1 | 36 | 12 600 | 11 800 | 3000 | 800 |
| S3.0-2 | 36 | 12 600 | 11 800 | 3000 | 800 |
| S3.0-3 | 36 | 12 600 | 11 800 | 3000 | 800 |
| S3.5-1 | 36 | 13 100 | 12 300 | 3 500 | 800 |
| S3.5-2 | 36 | 13 100 | 12300 | 3 500 | 800 |
| S3.5-3 | 36 | 13 100 | 12300 | 3 500 | 800 |
| S4.0-1 | 36 | 13 600 | 12 800 | 4000 | 800 |
| S4.0-2 | 36 | 13 600 | 12 800 | 4000 | 800 |
| S4.0-3 | 36 | 13 600 | 12 800 | 4000 | 800 |
), ArticleFig(id=1156986751559487940, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=表2, caption=
锚杆主要设计参数, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆编号 | 杆体直 径/mm | 锚杆总 长/mm | 锚固段长 度/mm | 锚入中风化花 岗岩长度/mm | 加载段长 度/mm |
| S3.0-1 | 36 | 12 600 | 11 800 | 3000 | 800 |
| S3.0-2 | 36 | 12 600 | 11 800 | 3000 | 800 |
| S3.0-3 | 36 | 12 600 | 11 800 | 3000 | 800 |
| S3.5-1 | 36 | 13 100 | 12 300 | 3 500 | 800 |
| S3.5-2 | 36 | 13 100 | 12300 | 3 500 | 800 |
| S3.5-3 | 36 | 13 100 | 12300 | 3 500 | 800 |
| S4.0-1 | 36 | 13 600 | 12 800 | 4000 | 800 |
| S4.0-2 | 36 | 13 600 | 12 800 | 4000 | 800 |
| S4.0-3 | 36 | 13 600 | 12 800 | 4000 | 800 |
), ArticleFig(id=1156986751626596805, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Table 3, caption=
Test results statistics, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆 编号 | 破坏荷 载/kN | 极限抗拔承 载力/kN | 极限抗拔承载力 对应位移 $/\mathrm{{mm}}$ | 破坏方式 |
| S3.0-1 | 750 | 645 | 14.992 | 错头位移不收敛 |
| S3.0-2 | 709 | 645 | 11.413 | 错头位移不收敛 |
| S3.0-3 | 840 | 753 | 13.716 | 错头位移不收敛 |
| S3.5-1 | 837 | 753 | 15.089 | 错头位移不收敛 |
| S3.5-2 | 720 | 645 | 13.495 | 错头位移不收敛 |
| S3.5-3 | 738 | 645 | 12.631 | 错头位移不收敛 |
| S4.0-1 | 1 075 | 968 | 11.856 | 锚头位移不收敛 |
| S4.0-2 | 1 186 | 1 075 | 12.806 | 错头位移不收敛 |
| S4.0-3 | 1 075 | 968 | 12.386 | 错头位移不收敛 |
), ArticleFig(id=1156986752142496198, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=表3, caption=
试验结果统计, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆 编号 | 破坏荷 载/kN | 极限抗拔承 载力/kN | 极限抗拔承载力 对应位移 $/\mathrm{{mm}}$ | 破坏方式 |
| S3.0-1 | 750 | 645 | 14.992 | 错头位移不收敛 |
| S3.0-2 | 709 | 645 | 11.413 | 错头位移不收敛 |
| S3.0-3 | 840 | 753 | 13.716 | 错头位移不收敛 |
| S3.5-1 | 837 | 753 | 15.089 | 错头位移不收敛 |
| S3.5-2 | 720 | 645 | 13.495 | 错头位移不收敛 |
| S3.5-3 | 738 | 645 | 12.631 | 错头位移不收敛 |
| S4.0-1 | 1 075 | 968 | 11.856 | 锚头位移不收敛 |
| S4.0-2 | 1 186 | 1 075 | 12.806 | 错头位移不收敛 |
| S4.0-3 | 1 075 | 968 | 12.386 | 错头位移不收敛 |
), ArticleFig(id=1156986752209605065, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Table 4, caption=
Common load-displacement curve model ${}^{\left\lbrack {10}- {11},{14}\right\rbrack }$, figureFileSmall=null, figureFileBig=null, tableContent=
| 函数模型 | 函数公式 | 备注 |
| 双曲线模型 ${}^{\left\lbrack {10}\right\rbrack }$ | $Q =\frac{{Q}_{\mathrm{m}}S}{S + a}$ | $S$ 为锚杆位移,单位:$\mathrm{{mm}};{Q}_{\mathrm{m}}$ 为抗浮锚杆实测极限抗拔承载力,$\mathrm{{kN}};a$ 为拟合 参数 |
| 指数函数模型[11] | $Q ={Q}_{\mathrm{m}}\left({1 -{\mathrm{e}}^{bS}}\right)$ | $b$ 为沉降衰减因子,单位:mm ${}^{-1}$ |
| 幂函数模型[14] | $Q ={Q}_{\mathrm{m}}\left\{{1 -{\left\lbrack 1 +\frac{\left({n - 1}\right){K}_{i}}{{Q}_{\mathrm{m}}}S\right\rbrack }^{\frac{1}{1 - n}}}\right\}$ | ${K}_{i}$ 为初始抗拔刚度,取拉拔试验中杆体第一级荷载与对应位移的比值,单 位:kN/mm;$n$ 为切向刚度指数,因抗浮锚杆可视为微型等截面抗拔桩,故 $n ={2.122}$ |
), ArticleFig(id=1156986752259936714, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=表4, caption=
常见的荷载-位移模型 ${}^{\left\lbrack {10}- {11},{14}\right\rbrack }$, figureFileSmall=null, figureFileBig=null, tableContent=
| 函数模型 | 函数公式 | 备注 |
| 双曲线模型 ${}^{\left\lbrack {10}\right\rbrack }$ | $Q =\frac{{Q}_{\mathrm{m}}S}{S + a}$ | $S$ 为锚杆位移,单位:$\mathrm{{mm}};{Q}_{\mathrm{m}}$ 为抗浮锚杆实测极限抗拔承载力,$\mathrm{{kN}};a$ 为拟合 参数 |
| 指数函数模型[11] | $Q ={Q}_{\mathrm{m}}\left({1 -{\mathrm{e}}^{bS}}\right)$ | $b$ 为沉降衰减因子,单位:mm ${}^{-1}$ |
| 幂函数模型[14] | $Q ={Q}_{\mathrm{m}}\left\{{1 -{\left\lbrack 1 +\frac{\left({n - 1}\right){K}_{i}}{{Q}_{\mathrm{m}}}S\right\rbrack }^{\frac{1}{1 - n}}}\right\}$ | ${K}_{i}$ 为初始抗拔刚度,取拉拔试验中杆体第一级荷载与对应位移的比值,单 位:kN/mm;$n$ 为切向刚度指数,因抗浮锚杆可视为微型等截面抗拔桩,故 $n ={2.122}$ |
), ArticleFig(id=1156986752301879755, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Table 5, caption=
Calculation accuracy of ultimate uplift bearing capacity of load-displacement curve model, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆编号 | 实测极限抗拔 承载力/kN | 双曲线函数模型 | 指数函数模型 | 幂函数模型 |
| 预测值/kN | 相对误差 $/\%$ | 预测值 $/\mathrm{{kN}}$ | 相对误差 $/\%$ | 预测值/kN | 相对误差 $/\%$ |
| S3.0-1 | 645 | 606.52 | -5.97 | 641.65 | -0.52 | 604.24 | -6.32 |
| S3.0-2 | 645 | 581.17 | -9.90 | 621.61 | -3.63 | 563.27 | -12.67 |
| S3.0-3 | 753 | 696.75 | -7.47 | 741.70 | -0.13 | 681.34 | -9.52 |
| S3.5-1 | 753 | 710.42 | -5.65 | 754.09 | 0.14 | 707.32 | -6.07 |
| S3.5-2 | 645 | 605.14 | -6.18 | 642.20 | -0.43 | 599.93 | -6.99 |
| S3.5-3 | 645 | 576.14 | -10.68 | 612.98 | -4.96 | 561.41 | -12.96 |
| S4.0-1 | 968 | 801.12 | -17.24 | 846.90 | -12.51 | 733.52 | -24.22 |
| S4.0-2 | 1 075 | 962.77 | -10.44 | 1031.61 | -4.04 | 943.27 | -12.25 |
| S4.0-3 | 968 | 814.22 | -15.89 | 854.99 | -11.67 | 791.64 | -18.22 |
), ArticleFig(id=1156986752364794316, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=表5, caption=
荷载-位移曲线模型极限抗拔承载力计算精度, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆编号 | 实测极限抗拔 承载力/kN | 双曲线函数模型 | 指数函数模型 | 幂函数模型 |
| 预测值/kN | 相对误差 $/\%$ | 预测值 $/\mathrm{{kN}}$ | 相对误差 $/\%$ | 预测值/kN | 相对误差 $/\%$ |
| S3.0-1 | 645 | 606.52 | -5.97 | 641.65 | -0.52 | 604.24 | -6.32 |
| S3.0-2 | 645 | 581.17 | -9.90 | 621.61 | -3.63 | 563.27 | -12.67 |
| S3.0-3 | 753 | 696.75 | -7.47 | 741.70 | -0.13 | 681.34 | -9.52 |
| S3.5-1 | 753 | 710.42 | -5.65 | 754.09 | 0.14 | 707.32 | -6.07 |
| S3.5-2 | 645 | 605.14 | -6.18 | 642.20 | -0.43 | 599.93 | -6.99 |
| S3.5-3 | 645 | 576.14 | -10.68 | 612.98 | -4.96 | 561.41 | -12.96 |
| S4.0-1 | 968 | 801.12 | -17.24 | 846.90 | -12.51 | 733.52 | -24.22 |
| S4.0-2 | 1 075 | 962.77 | -10.44 | 1031.61 | -4.04 | 943.27 | -12.25 |
| S4.0-3 | 968 | 814.22 | -15.89 | 854.99 | -11.67 | 791.64 | -18.22 |
), ArticleFig(id=1156986752419320269, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=EN, label=Table 6, caption=
Calculation parameters of load-displacement curve model, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆编号 | 双曲线函数 模型 $a$ | 指数函数模型 $b/\left({\mathrm{{mm}}}^{-1}\right)$ | 幂函数模型 ${K}_{i}/\left({\mathrm{{kN}}\cdot {\mathrm{{mm}}}^{-1}}\right)$ |
| S3.0-1 | 5.890 6 | -0.138 0 | 145.552 6 |
| S3.0-2 | 4.939 8 | -0.1729 | 134.161 5 |
| S3.0-3 | 5.125 4 | -0.162 2 | 146.938 8 |
| S3.5-1 | 4.676 7 | -0.014 2 | 195.298 4 |
| S3.5-2 | 3.719 2 | -0.1931 | 288.000 0 |
| S3.5-3 | 5.996 2 | -0.1395 | 121.076 2 |
| S4.0-1 | 7.875 2 | -0.1183 | 117.009 8 |
| S4.0-2 | 6.335 5 | -0.142 3 | 192.170 8 |
| S4.0-3 | 7.510 9 | -0.1187 | 147.139 0 |
), ArticleFig(id=1156986752482234830, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156986622068741013, language=CN, label=表6, caption=
荷载-位移曲线模型计算参数, figureFileSmall=null, figureFileBig=null, tableContent=
| 锚杆编号 | 双曲线函数 模型 $a$ | 指数函数模型 $b/\left({\mathrm{{mm}}}^{-1}\right)$ | 幂函数模型 ${K}_{i}/\left({\mathrm{{kN}}\cdot {\mathrm{{mm}}}^{-1}}\right)$ |
| S3.0-1 | 5.890 6 | -0.138 0 | 145.552 6 |
| S3.0-2 | 4.939 8 | -0.1729 | 134.161 5 |
| S3.0-3 | 5.125 4 | -0.162 2 | 146.938 8 |
| S3.5-1 | 4.676 7 | -0.014 2 | 195.298 4 |
| S3.5-2 | 3.719 2 | -0.1931 | 288.000 0 |
| S3.5-3 | 5.996 2 | -0.1395 | 121.076 2 |
| S4.0-1 | 7.875 2 | -0.1183 | 117.009 8 |
| S4.0-2 | 6.335 5 | -0.142 3 | 192.170 8 |
| S4.0-3 | 7.510 9 | -0.1187 | 147.139 0 |
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