DOI:10.11973/fsyfh-202302015华南地区通明海特大桥混凝土结构耐久性设计胡正涛1,李国力2,杨海成3,范志宏3,王彭生3(1.广东省南粤交通东雷高速公路管理中心,湛江524000;2.北京建工路桥集团有限公司,北京101318;3.水工构造物耐久性技术交通行业重点实验室,广州510230)摘要:通过腐蚀环境调查、工程调研、暴露试验等明确了影响华南通明海特大桥混凝土结构耐久性的主要因素,确定了典型构件的腐蚀作用等级。通过典型构件中应力的数值分析及荷载、环境等共同作用的室内模拟试验,研究了荷载对混凝土中氯离子扩散的影响。考虑实际工程荷载作用,建立了符合实际环境与工程特点的混凝土结构耐久性设计方法,明确了工程耐久性设计参数,确定了全寿命周期成本最优的附加防腐蚀措施方案。关键词:跨海大桥;混凝土结构;暴露试验;耐久性设计;附加防腐蚀措施中图分类号:TG174文献标志码:A文章编号:1005-748X(2023)02-0087-07DurabilityDesignofConcreteStructureofTongminghaiBridgeinSouthChinaHUZhengtao1,LIGuoli2,YANGHaicheng3,FANGZhihong3,WANGPensheng3(1.GuangdongNanyueTransportationDongleiHighwayManagementCenter,Zhanjiang524000,China;2.BCEGBridgeConstructionGroupCo.,Ltd.,Beijing101318,China;3.KeyLaboratoryofHarbor&MarineStructureDurabilityTechnology,MinistryofCommunications,Guangzhou510230,China)Abstract:ThemainfactorsaffectingthedurabilityofconcretestructuresforTongminghaiBridgeinSouthChinawereidentifiedandthecorrosiongradesoftypicalcomponentsweredeterminedthroughcorrosiveenvironmentinvestigation,engineeringinvestigationandexposuretest.Theeffectofloadonchlorideiondiffusioninconcretewasstudiedthroughnumericalanalysisofstressintypicalstructures,indoorsimulationtestunderinteractionofloadandenvironment.Consideringtheactualengineeringload,durabilitydesignmethodofconcretestructurewasestablishedinaccordancewiththeactualenvironmentandengineeringcharacteristics.Theengineeringdurabilitydesignparametersweredefinedandtheadditionalanti-corrosionmeasureschemewithoptimallifecyclecostwasdetermined.Keywords:cross-seabridge;concretestructure;exposuretest;durabilitydesign;additionalanti-corrosionmeasure广州湛江东海岛至雷州高速公路工程是广东省2015年重点交通建设项目,也是湛...
