Article(id=1153992990134624440, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153992986405888144, articleNumber=1671-1807(2025)07-0058-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1724428800000, receivedDateStr=2024-08-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1753062969001, onlineDateStr=2025-07-21, pubDate=1744214400000, pubDateStr=2025-04-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753062969001, onlineIssueDateStr=2025-07-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753062969001, creator=13701087609, updateTime=1753062969001, updator=13701087609, issue=Issue{id=1153992986405888144, tenantId=1146029695717560320, journalId=1146123222451335185, year='2025', volume='25', issue='7', pageStart='1', pageEnd='372', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1753062968112, creator=13701087609, updateTime=1753063464821, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1153995069800567734, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153992986405888144, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1153995069800567735, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153992986405888144, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=58, endPage=62, ext={EN=ArticleExt(id=1153992990566637761, articleId=1153992990134624440, tenantId=1146029695717560320, journalId=1146123222451335185, language=EN, title=Creep Effect of Concrete-filled Steel Tube Tied Arch Bridge Considering Temperature Action, columnId=1151876674645226399, journalTitle=Science Technology and Industry, columnName=Technology Innovation, runingTitle=null, highlight=null, articleAbstract=
In order to study the creep effect of concrete-filled steel tube tied arch bridge, taking 1-128 m concrete-filled steel tube arch bridge as an example, a three-dimensional finite element calculation model was established. According to the creep model of concrete-filled steel tube under the action of steel content, core concrete strength and temperature proposed by Jung Ling Chang, the influence of creep on the long-term deformation and internal force of concrete-filled steel tube tied arch bridge was analyzed. The results show that the arch rib creep will cause the arch rib and tie beam of the concrete-filled steel tube tie arch bridge to produce flexural deformation, and the arch rib stress will redistribute, resulting in the arch rib stress increasing and the core concrete stress decreasing. The stress redistribution of arch rib, girder and arch rib caused by the creep of arch rib under the consideration of temperature is greater than that without the consideration of temperature. The influence of temperature on creep should be considered in bridge design, construction monitoring and later use stage, so as to reasonably predict long-term creep deformation and stress redistribution during operation stage.
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为研究考虑温度作用的钢管混凝土系杆拱桥徐变效应,以1-128 m钢管混凝土拱桥为实例,建立有限元三维计算模型,按照张戎令提出的含钢率、核心混凝土强度、温度三者共同作用下钢管混凝土的徐变模型开展徐变对钢管混凝土系杆拱桥长期变形和内力的影响分析。研究结果表明:拱肋徐变会导致钢管混凝土系杆拱桥的拱肋和系梁产生下挠变形,拱肋发生应力重分布,致使拱肋钢管应力不断增大,核心混凝土应力不断减小;考虑温度作用下拱肋徐变引起的拱肋、系梁下挠和拱肋应力重分布大于不考虑温度作用下拱肋徐变影响值。因此,在桥梁设计、施工监控以及后期使用阶段应考虑温度对徐变的影响,以便能合理预测运营阶段长期徐变变形和应力重分布。
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祁强(1993—),男,甘肃平凉人,硕士,讲师,研究方向为干寒地区材料与结构耐久性、系杆拱桥力学性能。
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祁强(1993—),男,甘肃平凉人,硕士,讲师,研究方向为干寒地区材料与结构耐久性、系杆拱桥力学性能。
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祁强(1993—),男,甘肃平凉人,硕士,讲师,研究方向为干寒地区材料与结构耐久性、系杆拱桥力学性能。
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拱脚截面下弦杆混凝土下缘应力, figureFileSmall=ZvO8FrlZs1w4X0OWvnMIMg==, figureFileBig=HUzlRgz98E0jvznOmNxOKw==, tableContent=null), ArticleFig(id=1199769405983916654, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992990134624440, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 结构 | 型号 | 弹性模量/(kN·mm-2) |
| 1 | 系梁混凝土 | C55 | 3.60×101 |
| 2 | 拱肋混凝土 | C50 | 3.55×101 |
| 3 | 预应力钢绞线 | 1860钢管绞线 | 1.95×102 |
| 4 | 吊杆 | 1670钢丝 | 2.05×102 |
| 5 | 拱肋钢管 | Q335 | 2.06×102 |
| 6 | 横撑、缀板 | Q235 | 2.06×102 |
), ArticleFig(id=1199769406118134397, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992990134624440, language=CN, label=表1, caption=
建模用材料
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 结构 | 型号 | 弹性模量/(kN·mm-2) |
| 1 | 系梁混凝土 | C55 | 3.60×101 |
| 2 | 拱肋混凝土 | C50 | 3.55×101 |
| 3 | 预应力钢绞线 | 1860钢管绞线 | 1.95×102 |
| 4 | 吊杆 | 1670钢丝 | 2.05×102 |
| 5 | 拱肋钢管 | Q335 | 2.06×102 |
| 6 | 横撑、缀板 | Q235 | 2.06×102 |
), ArticleFig(id=1199769406319460999, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992990134624440, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
截面 位置 | 项目 | 实测值 | 计算值 |
| 考虑温度 | 不考虑温度 |
| L/2 | 钢管上缘应力/MPa | 87.48 | 83.97 | 81.03 |
| 钢管下缘应力/MPa | 40.19 | 38.64 | 37.05 |
| 上弦杆混凝土应力/MPa | 5.72 | 5.81 | 6.19 |
| 下弦杆混凝土应力/MPa | 2.65 | 2.72 | 2.88 |
| 拱肋位移/mm | 66.21 | 63.78 | 61.30 |
| L/4 | 拱肋位移/mm | 42.05 | 40.38 | 39.13 |
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成桥4个月计算值与实测值对比
, figureFileSmall=null, figureFileBig=null, tableContent=
截面 位置 | 项目 | 实测值 | 计算值 |
| 考虑温度 | 不考虑温度 |
| L/2 | 钢管上缘应力/MPa | 87.48 | 83.97 | 81.03 |
| 钢管下缘应力/MPa | 40.19 | 38.64 | 37.05 |
| 上弦杆混凝土应力/MPa | 5.72 | 5.81 | 6.19 |
| 下弦杆混凝土应力/MPa | 2.65 | 2.72 | 2.88 |
| 拱肋位移/mm | 66.21 | 63.78 | 61.30 |
| L/4 | 拱肋位移/mm | 42.05 | 40.38 | 39.13 |
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