Article(id=1245389868575081185, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1245389858412282468, articleNumber=null, orderNo=null, doi=10.13197/j.eeed.2024.0216, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1680537600000, receivedDateStr=2023-04-04, revisedDate=1685894400000, revisedDateStr=2023-06-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1774853682893, onlineDateStr=2026-03-30, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774853682893, onlineIssueDateStr=2026-03-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774853682893, creator=13701087609, updateTime=1774853682893, updator=13701087609, issue=Issue{id=1245389858412282468, tenantId=1146029695717560320, journalId=1241701559352995854, year='2024', volume='44', issue='2', pageStart='1', pageEnd='232', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1774853680470, creator=13701087609, updateTime=1774854277127, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1245392361031840387, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1245389858412282468, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1245392361031840388, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1245389858412282468, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=147, endPage=159, ext={EN=ArticleExt(id=1245389868877071094, articleId=1245389868575081185, tenantId=1146029695717560320, journalId=1241701559352995854, language=EN, title=Study on the influence of wide-frequency tuned mass damper on rail corrugation, columnId=null, journalTitle=Earthquake Engineering and Engineering Dynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to solve the rail corrugation in the curve section of steel spring floating slab track in a metro, firstly, the characteristics of rail corrugation were tested on site. Secondly, according to the characteristics of rail corrugation, the precise tuning and development of wide-frequency tuned mass damper (WTMD) were carried out. Then, the parameters such as mass, stiffness and damping of WTMD were input to the established Vehicle-WTMD-Steel spring floating slab coupled dynamic model. The floating slab and foundation were considered as flexible bodies in the model. The wheel-rail contact was solved by the Kik-Piotrowski model, a multi-point non-Hertzian contact model. The 5th grade power spectral destiny formula from USA superimposed on the measured corrugation irregularity spectrum were used as excitation. The finite element software ANSYS and the multi-body dynamics simulation software UM were used to carry out the coupled dynamics analysis, and the WTMD parameters were optimized iteratively. At the same time, the rail vibration accelerations obtained by simulation analysis with or without WTMD were compared with the field measured data, and the influence of WTMD on rail vibration was studied. Finally, the total rail vibration level, track decay rate and three times corrugation tracking tests, with or without WTMD, were carried out to study the influence of WTMD on the rail vibration, the track decay rate and the corrugation development. The results show that: The first three dominant frequencies of the designed WTMD are 518 Hz, 700 Hz and 759 Hz, which are consistent with the vehicle passing frequency (520~830 Hz). The simulation and measured data are in good agreement, and the rail vertical vibration acceleration RMS is reduced from 200 g to 20 g after the installation of WTMD, and the vibration reduction effect is 8.1 dB. The WTMD can improve the vertical and lateral track decay rate and suppress the vertical and lateral rail pinned-pinned resonance. The three times corrugation tracking tests find that the rail corrugation develops slowly after the installation of WTMD, the rail corrugation is invisible.
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为了解决某地铁钢弹簧浮置板轨道曲线段钢轨波磨问题,首先对钢轨波磨进行了现场测试,其次依据波磨特征进行宽频式钢轨动力吸振器(wide-frequency tuned mass damper,WTMD)的精准调频和研制。然后将WTMD的质量、刚度和阻尼等参数输入到建立的车辆-WTMD-钢弹簧浮置板耦合动力学模型。模型中浮置板和基础考虑为柔性体,轮轨接触采用多点非赫兹接触的Kik-Piotrowski模型求解。以美国5级谱叠加现场实测的波磨不平顺谱作为激励,运用有限元软件ANSYS和多体动力学仿真软件UM进行联合耦合动力学分析,逐次迭代优化WTMD参数。同时,将有无WTMD的仿真分析得到的钢轨振动加速度和现场实测数据进行对比,研究了WTMD对钢轨振动的影响。最后进行了有无WTMD的钢轨振动总振级、钢轨振动衰减率和3次波磨跟踪测试,研究了WTMD对钢轨振动、钢轨振动衰减率和波磨发展的影响。研究表明:设计的WTMD前3阶振动主频分别为518、700、759 Hz,与车辆通过波磨频率(520~830 Hz)一致;仿真和实测的钢轨振动加速度数据吻合较好,安装WTMD后钢轨振动加速度均方根值由200 g降低为20 g,减振效果为8.1 dB;WTMD可以提高钢轨的垂向和横向振动衰减率,抑制钢轨的垂向和横向pinned-pinned共振;3次波磨跟踪测试发现,WTMD安装后,钢轨波磨发展缓慢,无肉眼可见的波磨。通过以上的仿真和试验都验证了WTMD可以有效地抑制钢轨波磨。
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1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
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1.西南交通大学 土木工程学院,四川 成都 610031
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许孝堂(1987—),男,博士研究生,主要从事减振降噪及车-线-桥耦合动力学研究。E-mail:sky_xxtang@yeah.net
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许孝堂(1987—),男,博士研究生,主要从事减振降噪及车-线-桥耦合动力学研究。E-mail:sky_xxtang@yeah.net
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2012. (in Chinese), articleTitle=Study on the mechanism of rail corrugation on subway track, refAbstract=null)], funds=[Fund(id=1245389890494514004, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, awardId=桂科AA21077011-4, language=CN, fundingSource=广西创新驱动发展专项(桂科AA21077011-4), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1245389883053818418, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, xref=1., ext=[AuthorCompanyExt(id=1245389883062207027, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, companyId=1245389883053818418, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China), AuthorCompanyExt(id=1245389883066401332, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, companyId=1245389883053818418, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.西南交通大学 土木工程学院,四川 成都 610031)]), AuthorCompany(id=1245389883154481724, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, xref=2., ext=[AuthorCompanyExt(id=1245389883162870333, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, companyId=1245389883154481724, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Qingdao Create Environment Control Technology Co., Ltd., Qingdao 266101, China), AuthorCompanyExt(id=1245389883171258942, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, companyId=1245389883154481724, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.青岛科而泰环境控制技术有限公司,山东 青岛 266101)])], figs=[ArticleFig(id=1245389885939499711, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 1, caption=
Rail corrugation measuring device, figureFileSmall=lNuOSkGi6uDKfJqKp2h/Cg==, figureFileBig=8PfClIxBmfRbQbJPZxs72A==, tableContent=null), ArticleFig(id=1245389886019191494, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图1, caption=
波磨测试小车, figureFileSmall=lNuOSkGi6uDKfJqKp2h/Cg==, figureFileBig=8PfClIxBmfRbQbJPZxs72A==, tableContent=null), ArticleFig(id=1245389886270849744, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 2, caption=
Rail corrugations in curve section of floating slab track (R =450 m), figureFileSmall=VbodKG46tBK8ePbJtuWRuA==, figureFileBig=5Ln1XSlRYP/WWaX2Z7ITLA==, tableContent=null), ArticleFig(id=1245389886388290261, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图2, caption=
浮置板轨道曲线段钢轨波磨(R = 450 m), figureFileSmall=VbodKG46tBK8ePbJtuWRuA==, figureFileBig=5Ln1XSlRYP/WWaX2Z7ITLA==, tableContent=null), ArticleFig(id=1245389886589616860, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 3, caption=
Roughness level of rail surface, figureFileSmall=QdbPAr1DiALZVXyES5oARg==, figureFileBig=d6EmU3dzmxo4BDclVJt8JQ==, tableContent=null), ArticleFig(id=1245389886715445987, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图3, caption=
钢轨表面粗糙水平, figureFileSmall=QdbPAr1DiALZVXyES5oARg==, figureFileBig=d6EmU3dzmxo4BDclVJt8JQ==, tableContent=null), ArticleFig(id=1245389886803526374, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 4, caption=
Wide-frequency tuned mass damper, figureFileSmall=1vyWsJ6Q9lhRZ8ZeJRRTCg==, figureFileBig=0kbybha1CFmGGHN2Q84l5w==, tableContent=null), ArticleFig(id=1245389886895801066, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图4, caption=
宽频式钢轨吸振器, figureFileSmall=1vyWsJ6Q9lhRZ8ZeJRRTCg==, figureFileBig=0kbybha1CFmGGHN2Q84l5w==, tableContent=null), ArticleFig(id=1245389886983881452, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 5, caption=
Spectrum diagram of WTWD, figureFileSmall=IwmSy9CRK276PJC39HFrlA==, figureFileBig=iWCF50HXsWDUUiBV9097qQ==, tableContent=null), ArticleFig(id=1245389887076156143, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图5, caption=
WTMD频谱图, figureFileSmall=IwmSy9CRK276PJC39HFrlA==, figureFileBig=iWCF50HXsWDUUiBV9097qQ==, tableContent=null), ArticleFig(id=1245389887160042228, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 6, caption=
WTMD installation, figureFileSmall=i4SPk0u3vEIDmVdDSajBQg==, figureFileBig=4QdelbqKGA4M52egrrEbnA==, tableContent=null), ArticleFig(id=1245389887269094133, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图6, caption=
WTMD现场安装, figureFileSmall=i4SPk0u3vEIDmVdDSajBQg==, figureFileBig=4QdelbqKGA4M52egrrEbnA==, tableContent=null), ArticleFig(id=1245389887361368824, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 7, caption=
Vehicle-WTMD-Steel spring floating slab coupled dynamic model, figureFileSmall=0QYD6BcP1+BR+KVhp0KUPQ==, figureFileBig=yuLRCk6lZXzBE2xD3g70Kw==, tableContent=null), ArticleFig(id=1245389887470420731, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图7, caption=
车辆-WTMD-钢弹簧浮置板耦合动力学模型, figureFileSmall=0QYD6BcP1+BR+KVhp0KUPQ==, figureFileBig=yuLRCk6lZXzBE2xD3g70Kw==, tableContent=null), ArticleFig(id=1245389887571084032, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 8, caption=
Vehicle model established with UM9136, figureFileSmall=/H+VNbQbnlQlqGR2ZJr5Ig==, figureFileBig=2qOF2/CygmcNmUES3bKtvA==, tableContent=null), ArticleFig(id=1245389887688524544, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图8, caption=
UM9136建立的车辆模型, figureFileSmall=/H+VNbQbnlQlqGR2ZJr5Ig==, figureFileBig=2qOF2/CygmcNmUES3bKtvA==, tableContent=null), ArticleFig(id=1245389887797576451, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 9, caption=
Spring floating slab model established with ANSYS15.1 and UM9136, figureFileSmall=G3aMwkHniU/awiGYwoREIA==, figureFileBig=mNniDBJBryNisoWgfI5LDw==, tableContent=null), ArticleFig(id=1245389887894045447, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图9, caption=
ANSYS15.1和UM9136联合建立的钢弹簧浮置板模型, figureFileSmall=G3aMwkHniU/awiGYwoREIA==, figureFileBig=mNniDBJBryNisoWgfI5LDw==, tableContent=null), ArticleFig(id=1245389887986320136, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 10, caption=
Diagram for judging contact area with the Kik-Piotrowski method, figureFileSmall=atuS7t/HMrt6nxIyjLwQ6g==, figureFileBig=AKjhzIs+vhWXsxOIo7LUOA==, tableContent=null), ArticleFig(id=1245389888086983437, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图10, caption=
Kik-Piotrowski方法判断接触区域示意图, figureFileSmall=atuS7t/HMrt6nxIyjLwQ6g==, figureFileBig=AKjhzIs+vhWXsxOIo7LUOA==, tableContent=null), ArticleFig(id=1245389888179258125, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 11, caption=
Track irregularity excitation spectrum, figureFileSmall=LwD77+eVtcPpK3/QySsDvQ==, figureFileBig=n8PK77wrjNWZ+7aHzwAvJw==, tableContent=null), ArticleFig(id=1245389888384779026, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图11, caption=
轨道不平顺激励谱, figureFileSmall=LwD77+eVtcPpK3/QySsDvQ==, figureFileBig=n8PK77wrjNWZ+7aHzwAvJw==, tableContent=null), ArticleFig(id=1245389888468665110, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 12, caption=
Vehicle-WTMD-Steel spring floating slab coupled dynamic model, figureFileSmall=xDyBxuzFHZultOw6UzW94Q==, figureFileBig=8rlnTzfc0Q0cKY+uFtUMVw==, tableContent=null), ArticleFig(id=1245389888548356888, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图12, caption=
车辆-WTMD-钢弹簧浮置板耦合动力学仿真模型, figureFileSmall=xDyBxuzFHZultOw6UzW94Q==, figureFileBig=8rlnTzfc0Q0cKY+uFtUMVw==, tableContent=null), ArticleFig(id=1245389888640631579, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 13, caption=
Measured and simulated rail vibration acceleration, figureFileSmall=AgHCWjP9SgCO5x5W599eOA==, figureFileBig=ktaHuK4nmQZ+BzkiSDMAnw==, tableContent=null), ArticleFig(id=1245389888749683487, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图13, caption=
钢轨振动加速度的实测和仿真, figureFileSmall=AgHCWjP9SgCO5x5W599eOA==, figureFileBig=ktaHuK4nmQZ+BzkiSDMAnw==, tableContent=null), ArticleFig(id=1245389888812598050, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 14, caption=
Installation diagram of rail vibration acceleration sensor, figureFileSmall=LLs36IN/JSpfbo/ggprhow==, figureFileBig=+c5VCcxRIhVxR0t0eEqjYQ==, tableContent=null), ArticleFig(id=1245389888913261350, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图14, caption=
钢轨振动加速度传感器安装, figureFileSmall=LLs36IN/JSpfbo/ggprhow==, figureFileBig=+c5VCcxRIhVxR0t0eEqjYQ==, tableContent=null), ArticleFig(id=1245389888997147432, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 15, caption=
Total rail vertical vibration level measurod 20 times, figureFileSmall=xq5s/WYNnI2CXZXfEWhp0A==, figureFileBig=UFfXdh8WSSnnHKcz0/IKTA==, tableContent=null), ArticleFig(id=1245389889064256298, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图15, caption=
20次测量钢轨垂向总振级, figureFileSmall=xq5s/WYNnI2CXZXfEWhp0A==, figureFileBig=UFfXdh8WSSnnHKcz0/IKTA==, tableContent=null), ArticleFig(id=1245389889181696814, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 16, caption=
Measurement points and excitation points of track decay rate, figureFileSmall=5vbSIwOJA748SPzZKqIlEA==, figureFileBig=Jzi3LIChF2xViBiUMTFx3w==, tableContent=null), ArticleFig(id=1245389889248805680, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图16, caption=
钢轨振动衰减率测试点和激烈点示意图注:a为轨枕正上方锤击点;b为轨枕中间锤击点;c为传感器安装点;d为轨枕中间编号。
, figureFileSmall=5vbSIwOJA748SPzZKqIlEA==, figureFileBig=Jzi3LIChF2xViBiUMTFx3w==, tableContent=null), ArticleFig(id=1245389889328497458, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 17, caption=
Track decay rates in vertical direction before and after WTMD installation, figureFileSmall=qp5kApJIy4qhmRK5A+1L4g==, figureFileBig=KwuR7H22rB9za2AIU2HVoA==, tableContent=null), ArticleFig(id=1245389889504658230, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图17, caption=
WTMD安装前后钢轨振动衰减率, figureFileSmall=qp5kApJIy4qhmRK5A+1L4g==, figureFileBig=KwuR7H22rB9za2AIU2HVoA==, tableContent=null), ArticleFig(id=1245389889588544314, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 18, caption=
Rail surface photos before and after WTMD installation, figureFileSmall=kO7Hwe2EhLXd5ualuK3LHg==, figureFileBig=GjTgja+eLgrBUtU0zLfDKQ==, tableContent=null), ArticleFig(id=1245389889693401916, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图18, caption=
WTMD安装前后钢轨表面照片, figureFileSmall=kO7Hwe2EhLXd5ualuK3LHg==, figureFileBig=GjTgja+eLgrBUtU0zLfDKQ==, tableContent=null), ArticleFig(id=1245389889852785470, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Fig. 19, caption=
Roughness level of rails, figureFileSmall=m2gEI0Ewai/tH85AryDZsg==, figureFileBig=WDaU5299BX8HINLwGqXkyg==, tableContent=null), ArticleFig(id=1245389889940865857, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=图19, caption=
钢轨粗糙度水平, figureFileSmall=m2gEI0Ewai/tH85AryDZsg==, figureFileBig=WDaU5299BX8HINLwGqXkyg==, tableContent=null), ArticleFig(id=1245389890028946245, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Table 1, caption=
Model parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参数 | 单位 | 项目 | 参数 | 单位 |
|---|
| 轴重 | 14 | t | 隔振器垂向刚度 | 6.6 | kN/mm |
| 车速 | 75 | km/h | 隔振器纵向间距 | 1.8 | m |
| 转向架中心距 | 12.6 | m | 隔振器横向间距 | 2.0 | m |
| WTMD设计频率 | 520~830 | Hz | 曲线半径 | 450 | m |
| WTMD质量 | 13.8 | kg/m | 曲线轨底坡 | 1∶40 | — |
| WTMD阻尼比 | 0.4 | — | 曲线超高 | 120 | mm |
| 扣件垂向刚度 | 40 | kN/mm | 混凝土密度 | 2500 | kg/m3 |
| 扣件横向刚度 | 60 | kN/mm | 混凝土泊松比 | 0.2 | — |
| 浮置板截面尺寸 | 3×0.45 | m | 混凝土弹性模量 | 3.251010 | Pa |
| 浮置板长度 | 4.8 | m | | | |
), ArticleFig(id=1245389890129609544, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=表1, caption=
模型主要参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 参数 | 单位 | 项目 | 参数 | 单位 |
|---|
| 轴重 | 14 | t | 隔振器垂向刚度 | 6.6 | kN/mm |
| 车速 | 75 | km/h | 隔振器纵向间距 | 1.8 | m |
| 转向架中心距 | 12.6 | m | 隔振器横向间距 | 2.0 | m |
| WTMD设计频率 | 520~830 | Hz | 曲线半径 | 450 | m |
| WTMD质量 | 13.8 | kg/m | 曲线轨底坡 | 1∶40 | — |
| WTMD阻尼比 | 0.4 | — | 曲线超高 | 120 | mm |
| 扣件垂向刚度 | 40 | kN/mm | 混凝土密度 | 2500 | kg/m3 |
| 扣件横向刚度 | 60 | kN/mm | 混凝土泊松比 | 0.2 | — |
| 浮置板截面尺寸 | 3×0.45 | m | 混凝土弹性模量 | 3.251010 | Pa |
| 浮置板长度 | 4.8 | m | | | |
), ArticleFig(id=1245389890268021581, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=EN, label=Table 2, caption=
Process of tracking tests
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测试时间 | 测试内容 |
|---|
| 2020-12-16 | 波磨第一次观测和测试 |
| 2020-12-20—2020-12-27 | WTMD安装 |
| 2021-01-20 | 对安装WTMD的钢轨进行打磨 |
| 2021-02-21 | 波磨第二次观测和测试 |
| 2021-06-11 | 波磨第三次观测和测试 |
), ArticleFig(id=1245389890385462097, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245389868575081185, language=CN, label=表2, caption=
跟踪测试进程
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测试时间 | 测试内容 |
|---|
| 2020-12-16 | 波磨第一次观测和测试 |
| 2020-12-20—2020-12-27 | WTMD安装 |
| 2021-01-20 | 对安装WTMD的钢轨进行打磨 |
| 2021-02-21 | 波磨第二次观测和测试 |
| 2021-06-11 | 波磨第三次观测和测试 |
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