Article(id=1242132549573620078, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1242132535975686481, articleNumber=null, orderNo=9, doi=10.3981/j.issn.1000-7857.2014.27.007, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1402329600000, receivedDateStr=2014-06-10, revisedDate=1405008000000, revisedDateStr=2014-07-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1412048440170, onlineDateStr=2014-09-30, pubDate=1411833600000, pubDateStr=2014-09-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1412048440170, onlineIssueDateStr=2014-09-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774077077522, creator=sys-migrate, updateTime=1774077077522, updator=sys-migrate, issue=Issue{id=1242132535975686481, tenantId=1146029695717560320, journalId=1146031591421210625, year='2014', volume='32', issue='27', pageStart='1', pageEnd='96', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=3, issueType=-1, specialIssue=null, createTime=1774077074279, creator=sys-migrate, updateTime=1774077074279, updator=sys-migrate, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=43, endPage=48, ext={EN=ArticleExt(id=1242132555990905237, articleId=1242132549573620078, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Numerical Simulation of Thermal Field in Permafrost Embankmentbridge Transition Section of Qinghai-tibet Railway Bridge, columnId=1242116080374710456, journalTitle=Science & Technology Review, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=A 3-D numerical simulation model of the permafrost roadbed-bridge transition section thermal field is built and the finite element method is adopted to predict and compare the thermal field for different transition section heights and different types of permafrost by raising temperature by 2.6℃ in the coming 50 years. The calculated results show that with the time, the maximum thawing depth profile parts move gradually from the transition section to the place behind the embankment,and the positions of the largest cross-sectional thawing depth and the maximum thawing rate move from the northern slope foot between the slope shoulders to the subgrade center. The cross sectional northern slope foot thawing rate becomes greater than the natural thawing permafrost foundation rate. For the rest parts of the transect before the operational 25 years, the artificial permafrost table degradation rate is lower than the natural permafrost table, and 25 years later, the artificial permafrost table degradation rate is higher than that of the natural permafrost table gradually., correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=SOAIDcipD+XRxPm66SJ/bw==, pdfFileSize=3295496, 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=1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;
2. School of Architecture and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China, fund=null, authors=YIN Qixiang¹, ZHOU Guoqing^1,2, WANG Tao¹, XIA Lijiang¹, LIU Yuyi¹, authorsList=YIN Qixiang, ZHOU Guoqing, WANG Tao, XIA Lijiang, LIU Yuyi), CN=ArticleExt(id=1242132553252024713, articleId=1242132549573620078, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=青藏高原多年冻土区铁路路桥过渡段温度场三维数值分析, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=基于过渡段相变三维传热分析模型，对未来30 年路桥过渡段温度场进行分析与预测，研究了过渡段阴阳坡时空效应对路桥过渡段长期热稳定性的影响。计算结果表明：随着路桥过渡段运营时间的增长，各纵断面最大融化深度部位逐渐由过渡段转移到台背后路基，各横断面最大融深及最大融化速率位置均由阳坡坡脚转移到路基中心与阳坡路肩之间，相同运营时间，沿台背方向阴坡坡脚冻土上限变化并不明显；随着运营时间的增长，各横断面阳坡坡脚融化速率均大于天然冻土地基融化速率；各横断面除阳坡坡脚的其余部位在运营25 年以前，人为上限退化率基本小于天然冻土上限，运营25 年后，人为上限退化率逐渐大于天然冻土上限。, correspAuthors=null, authorNote=阴琪翔，博士研究生，研究方向为冻土路基工程，电子信箱：yinqixiang1988@163.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=8XQlkraNXQZJfpRWulh0zQ==, pdfFileSize=3295496, 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=1. 中国矿业大学深部岩土力学与地下工程国家重点实验室, 徐州221116;
2. 中国矿业大学力学与建筑工程学院, 徐州221116, fund=国家重点基础研究发展计划（973计划）项目（2012CB026103）；国家高技术研究发展计划（863计划）项目（2012AA06A401）；国家自然科学基金项目（41271096）, authors=阴琪翔¹, 周国庆^1,2, 王涛¹, 夏利江¹, 刘宇翼¹, authorsList=阴琪翔, 周国庆, 王涛, 夏利江, 刘宇翼)}, authors=null, keywords=[Keyword(id=1242132552836788611, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242132549573620078, language=CN, orderNo=1, keyword=热稳定性预测), Keyword(id=1242132552950034819, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242132549573620078, language=CN, orderNo=1, keyword=数值模拟), Keyword(id=1242132553033920900, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242132549573620078, language=CN, orderNo=1, keyword=路桥过渡段), Keyword(id=1242132553109418374, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242132549573620078, language=CN, orderNo=1, keyword=多年冻土), Keyword(id=1242132555584057740, tenantId=1146029695717560320, journalId=1146031591421210625, 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