港珠澳大桥大节段钢箱梁海上运输关键技术研究  

Research on key technology of maritime transport of large segments of steel box girder in Hong Kong-Zhuhai-Macao Bridge

作　　者：刘鹏[1] 贺拴海[1] 赵英策[2] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]中交公路规划设计院有限公司,北京100088

出　　处：《合肥工业大学学报（自然科学版）》2015年第1期85-90,共6页Journal of Hefei University of Technology：Natural Science

基　　金：交通运输部西部交通建设科技资助项目(2011318812970);中央高校基本科研业务专项资金资助项目(CHD2012JC001)

摘　　要：针对青州航道桥边跨和连接线深水区非通航孔桥,采用了大节段整体吊装架设方法,驳船海上运输梁段数量多、超长、超重,且途经航区海况复杂,钢箱梁及附属支撑、限位结构局部受力现象突出。文章采用中国船级社(CSS)规则对复杂海况下钢箱梁船运三向受力进行了分析,考虑施工可行性进而确定支撑、限位装置的排布和构造,对工字梁船运支撑结构进行了优化设计;分析了大节段船运过程中支撑、限位装置和钢箱梁船船运期间的局部受力和稳定性,确保钢箱梁和支撑、限位构造受力处于可控状态。计算结果表明,在不采取钢箱梁内部加劲的前提下,通过合理布置、设计局部支撑限位构造,钢箱梁和支撑结构在复杂海况环境下驳船运输期间的强度、变形和局部稳定性满足要求。研究结果可为今后大节段钢箱梁海上运输提供有益参考。The overall lifting erection method is used in the construction of the side span of Qingzhou channel bridge and the non-navigation bridge in deep water district and a large number of segments of steel box girder are needed to transport by barge to construction site which are super long and overweighted,and the navigation area has complex conditions,and all these lead to the local stress of steel box girder and limit structures in an unfavorable state.In order to analyze the force state of box girder under the complex sea conditions,China Classification Society（CSS）rules are used to calculate the three-direction force state and the arrangement of support and limit devices is determined considering the construction feasibility.Further,the optimized design of the vertical support structure is carried out and the intensity and stability of support and limit devices are also calculated to ensure the force controllable.The results show that without taking internal stiffening of steel box girder,through the rational layout of support and limit structures,the intensity and stability of the steel box girders and support structures meet requirements during the maritime transport under complex sea conditions,which provides a useful reference for the maritime transport of large steel box girder segment in the future.

关 键 词：大节段 钢箱梁 海上运输 关键技术 

分 类 号：TU391[建筑科学—结构工程]