EarthquakeResistantEngineeringandRetrofittingJun.2023o.Ltd,S1AertJun.2023EarthquakeResistantEngineeringandRetrofitting2023年6月Vol.45,No.3第45卷第3期工程抗震与加固改造[文章编号]1002-8412(2023)03-0150-09D0I:10.16226/j.issn.1002-8412.2023.03.019波纹钢加固混凝土箱涵的效果及影响参数分析牟开，黄帅，武飞？，刘保东（1.山西省交通新技术发展有限公司，山西太原030006;2.北京交通大学土木与建筑工程学院，北京100044）[提要]为明确波纹钢加固混凝土箱涵的受力性能，本文在考虑原涵洞的二次受力状态以及界面接触属性的基础上利用两步法建模的方法分析了组合程度、波纹钢板的波形参数、混凝土填充层的强度等级、混凝土填充层厚度对结构承载力的影响以及荷载分配规律。结果表明：波纹钢板加固箱涵后承载力提升1倍以上，结构的延性得到进一步的提升；混凝土填充层强度等级的提高对结构承载力的影响甚少；关键位置的凿毛以及全截面的凿毛、植筋和波纹钢板上设置剪力连接件有助于承载力的大幅提高；拱顶位置混凝土填充层厚度增加承载力大幅提高；结构的承载力和延性与波形参数不成正比例关系；各个截面的荷载分配与各部分的抗弯刚度占比成正比例关系。[关键词]混凝土箱涵加固；波纹钢；有限元模型；参数分析[中图分类号]U445.7*2[文献标识码]AnalysisofreinforcementeffectandinfluencingparametersofreinforcedconcreteboxculvrengthenedbycorrugatedsteelMouKai',HuangShuai',WuFei?²,LiuBao-dong'(1.ShanxiCommunicationsNewTechnologyDevelopmentCTaiyuan030006,China;2.SchoolofCivilEngineering,BeijingJiaotongUniversity,Beijing100044,China)Abstract:Inordertoanalysisthemechanicsperformanceofreinforcedconcreteboxculvertstrengthenedbycorrugatedsteel,afiniteelementmodelisestablishedusingthetwo-stepmethod,whichconsiderstheinitialinternalforceoftheoriginalculvertandtheinterfacecontactproperties.Thefiniteelementmodelisusedtoanalyzetheinfluenceofthedegreeofcombination,stffnessofcorrugatedsteelplate,strengthofconcretefillinglayer,thicknessofconcretefillinglayerabovethevaultonthestructuralbearingcapacity,andtheloaddistributionlaw.Theresultsshowthatthebearingcapacityisincreasedbymorethanonetimeandtheductilityisfurtherimproved.Thestrengthoftheconcretefillerlayerhaslittleeffect...
