Article(id=1153992828783944559, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153992827261412198, articleNumber=1671-1807(2025)05-0100-08, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1724688000000, receivedDateStr=2024-08-27, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1753062930532, onlineDateStr=2025-07-21, pubDate=1741536000000, pubDateStr=2025-03-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753062930532, onlineIssueDateStr=2025-07-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753062930532, creator=13701087609, updateTime=1753062930532, updator=13701087609, issue=Issue{id=1153992827261412198, tenantId=1146029695717560320, journalId=1146123222451335185, year='2025', volume='25', issue='5', pageStart='1', pageEnd='368', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1753062930169, creator=13701087609, updateTime=1753063450817, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1153995011059340165, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153992827261412198, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1153995011063534470, tenantId=1146029695717560320, journalId=1146123222451335185, issueId=1153992827261412198, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=100, endPage=107, ext={EN=ArticleExt(id=1153992829224346484, articleId=1153992828783944559, tenantId=1146029695717560320, journalId=1146123222451335185, language=EN, title=Impact Factors for New Double I-Steel Plate Composite Beams, columnId=1151876674645226399, journalTitle=Science Technology and Industry, columnName=Technology Innovation, runingTitle=null, highlight=null, articleAbstract=
The finite-element model was used to simulate the double I-steel and concrete composite beam bridge with a span of 4×35 meters in the approach bridge outside the dike of Shouchun Huaihe River Bridge.The results indicate that the impact factor of the steel beam increases with speed and then decreases, reaching a maximum at 60 km/h. In contrast, the impact factor of the bridge deck continues to rise with speed, exceeding the design value of the standard local impact factor by 91.67% at 120 km/h. Both the steel main beam and the bridge deck’s impact factors decrease with the increase in vehicle weight. Specific trends in the variation of impact coefficients with vehicle speed and weight are identified, the limitations of existing bridge design codes in accurately describing the actual dynamic response to vehicle loading is revealed, the importance of considering local dynamic effects in bridge design and evaluation is emphasized.
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以寿春淮河特大桥堤外引桥中跨径为4×35 m的双工字钢-混凝土组合梁桥为例,采用动力有限元模型进行数值模拟。结果显示:钢梁的冲击系数随车速增加先升高后降低,在60 km/h达到最大值;而桥面板的冲击系数则随车速增加而持续上升,在120 km/h时超过规范局部冲击系数设计值的91.67%;钢主梁和桥面板的冲击系数都会随着车辆重量的增加而降低。明确了冲击系数随车速和车重变化的具体趋势,揭示了现有桥梁设计规范在准确描述车辆荷载实际动力响应方面的局限性,强调了在桥梁设计和评估中考虑局部动力效应的重要性。
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王子浩(1999—),男,山东东营人,硕士研究生,研究方向为桥梁结构分析;
杨洋(1990—),男,安徽合肥人,工程师,研究方向为公路建设和养护管理。
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1 School of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1245743560243396644, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, authorId=1245743559970766858, language=CN, stringName=王子浩, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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38(2): 68-70., articleTitle=曲线双工字钢板组合梁桥受弯破坏全过程分析, refAbstract=null)], funds=[Fund(id=1245743572398490088, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, awardId=52278227, language=CN, fundingSource=重载交通下曲线梁桥性能化抗倾覆设计理论基金(52278227), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1245743559622640610, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, xref=1, ext=[AuthorCompanyExt(id=1245743559635223525, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, companyId=1245743559622640610, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 School of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China), AuthorCompanyExt(id=1245743559643612133, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, companyId=1245743559622640610, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 浙江工业大学土木工程学院, 杭州 310014)]), AuthorCompany(id=1245743559811384309, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, xref=2, ext=[AuthorCompanyExt(id=1245743559823967224, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, companyId=1245743559811384309, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 安徽省交通控股集团有限公司, 合肥 230088)])], figs=[ArticleFig(id=1245743564311871718, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=bi9VpZGjUrMQHPqYn0ngHQ==, figureFileBig=zI11FE/HUVck0shMp88L3A==, tableContent=null), ArticleFig(id=1245743564458672366, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图1, caption=
寿春淮河特大桥堤外引桥现场, figureFileSmall=bi9VpZGjUrMQHPqYn0ngHQ==, figureFileBig=zI11FE/HUVck0shMp88L3A==, tableContent=null), ArticleFig(id=1245743564647416056, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=dsE5OHtTRoyKT3BNYg5mrw==, figureFileBig=FgXOIb1azKyndE2YvcTQvw==, tableContent=null), ArticleFig(id=1245743564823576840, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图2, caption=
4×35 m跨径形式的钢板组合梁桥示意图, figureFileSmall=dsE5OHtTRoyKT3BNYg5mrw==, figureFileBig=FgXOIb1azKyndE2YvcTQvw==, tableContent=null), ArticleFig(id=1245743564991349009, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=cgNFmowBxlHl9uEx5ef0aw==, figureFileBig=Dunygr0EJYiAQ1hPHuF1vQ==, tableContent=null), ArticleFig(id=1245743565184287004, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图3, caption=
钢横梁构造, figureFileSmall=cgNFmowBxlHl9uEx5ef0aw==, figureFileBig=Dunygr0EJYiAQ1hPHuF1vQ==, tableContent=null), ArticleFig(id=1245743565322699042, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=cgZIpiQQvgjCdrkNEQEGsw==, figureFileBig=ZkUis/tw8dKAC/3lex57TQ==, tableContent=null), ArticleFig(id=1245743565452722476, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图4, caption=
桥面板示意图, figureFileSmall=cgZIpiQQvgjCdrkNEQEGsw==, figureFileBig=ZkUis/tw8dKAC/3lex57TQ==, tableContent=null), ArticleFig(id=1245743565591134519, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=zviO0e7HW0P8T62lGp1pHA==, figureFileBig=wL0I/GgivzN/qCJbWtLIAA==, tableContent=null), ArticleFig(id=1245743565721157952, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图5, caption=
试验桥梁示意图, figureFileSmall=zviO0e7HW0P8T62lGp1pHA==, figureFileBig=wL0I/GgivzN/qCJbWtLIAA==, tableContent=null), ArticleFig(id=1245743567319187786, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=rLdwImJ90Ya0+a3J+ewORg==, figureFileBig=7YlhdHmPDtE8gZRme43wLw==, tableContent=null), ArticleFig(id=1245743567470182737, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图6, caption=
标准的31 t四轴卡车示意图, figureFileSmall=rLdwImJ90Ya0+a3J+ewORg==, figureFileBig=7YlhdHmPDtE8gZRme43wLw==, tableContent=null), ArticleFig(id=1245743567642149207, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=5sPjlapiPIYtShYNudT62A==, figureFileBig=/h9chAv9iv/x/xXxuWzgfQ==, tableContent=null), ArticleFig(id=1245743567818309985, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图7, caption=
案例桥上部结构有限元模型, figureFileSmall=5sPjlapiPIYtShYNudT62A==, figureFileBig=/h9chAv9iv/x/xXxuWzgfQ==, tableContent=null), ArticleFig(id=1245743568002859368, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=vIDYLFfYHc/ai6JJTRARaw==, figureFileBig=huATyJAdk9fMsTepAnarAg==, tableContent=null), ArticleFig(id=1245743568174825842, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图8, caption=
车辆模型, figureFileSmall=vIDYLFfYHc/ai6JJTRARaw==, figureFileBig=huATyJAdk9fMsTepAnarAg==, tableContent=null), ArticleFig(id=1245743568350986617, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=zrCuxzqanRZgS92lYidI1g==, figureFileBig=6YPLd5TusmDijedo2offCQ==, tableContent=null), ArticleFig(id=1245743568506175874, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图9, caption=
不同纵向位置加载下钢梁与桥面板的实测与模拟静态挠度响应对比, figureFileSmall=zrCuxzqanRZgS92lYidI1g==, figureFileBig=6YPLd5TusmDijedo2offCQ==, tableContent=null), ArticleFig(id=1245743568648782217, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=Uy7HJVlZHQNy/El/F7NEzA==, figureFileBig=FhJ5C7T25fNzE8wr8QO9ew==, tableContent=null), ArticleFig(id=1245743568795582866, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图10, caption=
不同车速加载下钢梁的实测动态挠度响应, figureFileSmall=Uy7HJVlZHQNy/El/F7NEzA==, figureFileBig=FhJ5C7T25fNzE8wr8QO9ew==, tableContent=null), ArticleFig(id=1245743568908829082, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=geJnTR41rHuquY/NBekw1w==, figureFileBig=oPFzxU+COqfXq1D0cdirrw==, tableContent=null), ArticleFig(id=1245743569022075296, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图11, caption=
不同车速加载下混凝土桥面板的实测动态挠度响应, figureFileSmall=geJnTR41rHuquY/NBekw1w==, figureFileBig=oPFzxU+COqfXq1D0cdirrw==, tableContent=null), ArticleFig(id=1245743569135321510, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=UzcsCSShzL6kxfwKoNMPaQ==, figureFileBig=OymravcTJHkTfYSqd2GNGg==, tableContent=null), ArticleFig(id=1245743569315676591, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图12, caption=
不同车速时钢梁与混凝土桥面板的动挠度响应, figureFileSmall=UzcsCSShzL6kxfwKoNMPaQ==, figureFileBig=OymravcTJHkTfYSqd2GNGg==, tableContent=null), ArticleFig(id=1245743569454088628, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=0KV34wYOwMWKr1uIERTAtA==, figureFileBig=H3TcIauYh90IR4oCKRXjfQ==, tableContent=null), ArticleFig(id=1245743569571529144, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图13, caption=
不同车速下的钢梁与混凝土桥面板冲击系数变化情况, figureFileSmall=0KV34wYOwMWKr1uIERTAtA==, figureFileBig=H3TcIauYh90IR4oCKRXjfQ==, tableContent=null), ArticleFig(id=1245743569718329790, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=TvjhhIwF1VMxTjGX3WHGUQ==, figureFileBig=WP4bct3UhnbLxRDm1xnPfQ==, tableContent=null), ArticleFig(id=1245743569835770304, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图14, caption=
不同车重时钢梁与混凝土桥面板的动挠度响应, figureFileSmall=TvjhhIwF1VMxTjGX3WHGUQ==, figureFileBig=WP4bct3UhnbLxRDm1xnPfQ==, tableContent=null), ArticleFig(id=1245743569944822213, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=19jJphvTyUhXZ1FHhJ0PyQ==, figureFileBig=/oOORJs/ic07GXFe5Osncw==, tableContent=null), ArticleFig(id=1245743570070651341, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=CN, label=图15, caption=
不同车重下的钢梁与混凝土桥面板冲击系数变化情况, figureFileSmall=19jJphvTyUhXZ1FHhJ0PyQ==, figureFileBig=/oOORJs/ic07GXFe5Osncw==, tableContent=null), ArticleFig(id=1245743570188091855, tenantId=1146029695717560320, journalId=1146123222451335185, articleId=1153992828783944559, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 车辆型号 | 载荷/t | 总重/t | L1/m | L2/m | L3/m |
| 1轴 | 2轴 | 3轴 | 4轴 |
| 四轴卡车 | 5.7 | 5.7 | 9.8 | 9.8 | 31.0 | 1.80 | 3.50 | 1.35 |
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车辆实际加载
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| 车辆型号 | 载荷/t | 总重/t | L1/m | L2/m | L3/m |
| 1轴 | 2轴 | 3轴 | 4轴 |
| 四轴卡车 | 5.7 | 5.7 | 9.8 | 9.8 | 31.0 | 1.80 | 3.50 | 1.35 |
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| 材料/部位 | 网格尺寸/ m | 弹性模量/ GPa | 泊松比 | 密度/ (kg·m-3) |
| 钢梁 | 0.2 | 206 | 0.3 | 7 850 |
| 混凝土 | 0.5 | 32.5 | 0.2 | 2 549 |
| 沥青路面 | 0.02 | 1.0 | 0.2 | 2 400 |
| 支座垫石 | 0.5 | 206 | 0.3 | 2 500 |
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有限元模型的材料特性及网格尺寸
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| 材料/部位 | 网格尺寸/ m | 弹性模量/ GPa | 泊松比 | 密度/ (kg·m-3) |
| 钢梁 | 0.2 | 206 | 0.3 | 7 850 |
| 混凝土 | 0.5 | 32.5 | 0.2 | 2 549 |
| 沥青路面 | 0.02 | 1.0 | 0.2 | 2 400 |
| 支座垫石 | 0.5 | 206 | 0.3 | 2 500 |
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| 车辆参数 | 数值 |
| 车体质量M1/kN | 303.56 |
| 前轮质量m2/kN | 15.58 |
| 后轮质量m3/kN | 45.56 |
| 横向轴间距L/m | 1.8 |
| 刚度k1/(N·m-1) | 2×106 |
| 阻尼c1/(Ns·m-1) | 0.98×106 |
| 刚度k2/(N·m-1) | 2.535×106 |
| 阻尼c2/(Ns·m-1) | 1.96×106 |
| 车体尺寸/m | 2.0×2.5×7.5 |
| 前轮尺寸/m | 0.2×0.2×0.4 |
| 后轮尺寸/m | 0.2×0.2×0.4 |
| 纵向轴间距L1、L2、L3/m | 1.8/3.5/1.35 |
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车辆模型参数
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| 车辆参数 | 数值 |
| 车体质量M1/kN | 303.56 |
| 前轮质量m2/kN | 15.58 |
| 后轮质量m3/kN | 45.56 |
| 横向轴间距L/m | 1.8 |
| 刚度k1/(N·m-1) | 2×106 |
| 阻尼c1/(Ns·m-1) | 0.98×106 |
| 刚度k2/(N·m-1) | 2.535×106 |
| 阻尼c2/(Ns·m-1) | 1.96×106 |
| 车体尺寸/m | 2.0×2.5×7.5 |
| 前轮尺寸/m | 0.2×0.2×0.4 |
| 后轮尺寸/m | 0.2×0.2×0.4 |
| 纵向轴间距L1、L2、L3/m | 1.8/3.5/1.35 |
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