178内蒙古工业大学学报（自然科学版）2023年第42卷第2期2023年4月内蒙古工业大学学报（自然科学版）JournalofInnerMongoliaUniversityofTechnology（NaturalScienceEdition）Vol.42No.2Apr.2023文章编号：1001-5167（2023）02-0178-06公路路基穿越高铁桥墩墩顶变形敏感因素分析冯志文1，晏长根2（1.山西诚达公路勘察设计有限公司，太原030006；2.长安大学公路学院，西安710054）AnalysisofsensitivefactorsofpierTopdeformationofhighwaysubgradecrossinghigh-speedrailwaybridgeFENGZhiwen1,YANChanggen2收稿日期：2022-08-23基金项目：国家自然科学基金项目（42077265）第一作者：冯志文（1989—），男，硕士，高级工程师，主要从事岩土工程、公路路基等领域的设计研究。E-mail:datongfengzw@163.com(1.ShanxiChengdaHighwaySurveyandDesignCo.,Ltd,Taiyuan030006,China;2.HighwayCollege,Chang'anUniversity,Xi'an710054,China)Abstract：Inviewofthepiertopdeformationcausedbythetrunkhighwaycrossingthehigh-speedrailwaypierintheformofsubgrade,inordertoclarifythemaininfluencingfactorsofpiertopdeformationandtheircorrelation,basedontheactualproject,numericalsimulationisusedtocalculateandanalyzethedisplacementanddeformationofeachpointonthepiertopfromtheintersectionangleofhighwayandrailway,thefillingheightofhighwaysubgrade,thesubgradereplacementdepth,andtheinternalfrictionangleoftheoriginalgroundsoil.Theresultsshowthatwiththedecreaseofthecrossingangle,thedeformationofthepiertopbecomeslarger,andthelateralinclinationdifferencealsoincreases;thehigherthesubgradefillingheightis,thegreaterthedeformationofthepiertopis,andtheinfluenceisverysignificant;theincreaseofsubgradereplacementdepthwillleadtotheobviousincreaseofpiertopdeformation;theinternalfrictionangleofthestratumsoilwherethebridgepierislocatedincreases,andthedeformationofthetopofthebridgepierdecreases.Keywords：geotechnicalengineering;highwaycrossingrailway;numericalsimulation;crossingangle;topdeformationofbridgepier;fillingheight摘要：针对干线公路采用路基形式穿越高速铁路桥墩所导致的墩顶变形，为明确墩顶变形的主要影响因素及其相关性，以实际项目为依托，采用数值模拟分别从公路与铁路的交叉角...
