京雄城际铁路桥梁设计关键技术

Review of Key Technologies for Bridge Design of Beijing-Xiongan Intercity Railway

京雄城际铁路作为新时代智能高铁的代表,在现有高速铁路桥梁建设经验基础上进行了多项技术探索与创新,在桥梁装配式一体化结构、全封闭声屏障桥梁结构、边墩牵引长悬臂墩顶转体及雄安高架站的设计情况等方面进行研究。桥梁装配式一体化结构和全封闭声屏障桥梁结构的首次应用,具有较好的生态环保社会效益,满足高速铁路技术标准要求;边墩牵引长悬臂墩顶转体在跨越高速公路重大立交节点方面做出了创新尝试,提供一种新的设计思路;雄安高架站咽喉区桥梁布置方式为雄安新区后续土地利用提供了便利条件。

In constructing the Beijing-Xiongan Intercity Railway,an emblem of intelligent high speed railways in the new era,technological explorations and innovations have been conducted based on experience in constructing high speed railway bridges.Research has been carried out on the prefabricated integrated bridge structure,bridge structure incorporating fully enclosed noise barriers,pier top rotation with a long cantilever drawn from the side pier,and the design of Xiongan elevated station.The introduction of the prefabricated integrated bridge structure and the bridge structure with fully enclosed noise barriers marks their inaugural application,yielding notable ecological,environmental,and social benefits while meeting the technical standards for high speed railways.Pier top rotation with a long cantilever drawn from the side pier signifies an innovative approach to crossing major expressway interchanges,providing a new design concept.The layout of the bridge in the throat area of Xiongan elevated station creates favorable conditions for future land use in the Xiongan New Area.