预应力混凝土连续刚构在铁路桥梁中的创新应用  

Innovative Application of Prestressed Concrete Continuous Rigid Frame in Railway Bridge

作　　者：文望青[1] 林骋[2] 武兵 WEN Wangqing;LIN Cheng;WU Bing(China Railway SIYUAN Survey and Design Group Co Ltd,Wuhan Hubei 430063,China;Bridge Design and Research Institute,China Railway SIYUAN Survey and Design Group Co Ltd,Wuhan Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063 [2]中铁第四勘察设计院集团有限公司桥梁设计研究院,湖北武汉430063

出　　处：《中国铁路》2021年第9期40-45,共6页China Railway

摘　　要：随着铁路不断向山区、海洋延伸,铁路桥梁技术迎来新的机遇与挑战。以宜昌—郑万高铁联络线高岚河特大桥、福州—厦门高铁泉州湾跨海大桥为例,论述基于整体设计思想的连续刚构在铁路桥梁中的创新应用。高岚河特大桥基于“桥墩协同作用、刚度合理匹配”的设计思想,将单向放坡桥墩创新性地应用于山区超高墩桥梁中,在经济性、景观效应方面取得了良好的效果;泉州湾跨海大桥引桥采用无支座连续刚构体系,在对结构刚度、耐久性和运营养护便利性有更高要求的跨海高速铁路桥梁中取得了良好的效果。研究结论为铁路连续刚构桥在复杂环境中的创新应用提供一定的参考,提出了新体系、新手段、新材料等方面研究创新的思路与方向。With the continuous extension of railways to mountainous areas and oceans,railway bridge technology has ushered in new opportunities and challenges.Taking Gaolan River Super Major Bridge of Yichang-Zhengzhou-Wanzhou HSR connecting line and Quanzhou Bay Sea-crossing Bridge of Fuzhou-Xiamen HSR as examples,this paper discusses the innovative application of continuous rigid frame in railway bridges based on the overall design concept.Based on the design concept of“pier synergy and reasonable stiffness matching”,the unidirectional sloping pier is innovatively applied by Gaolan River Super Major Bridge to the super-high pier bridge in mountainous area,which has achieved good results in economical efficiency and landscape effect;a continuous rigid frame system without bearing is adopted for the approach bridge of Quanzhou Bay Seacrossing Bridge,which has achieved good results in the sea-crossing HSR bridge with higher requirements for structural rigidity,durability and operation and maintenance convenience.The research conclusion provides some reference for innovative application of railway continuous rigid frame bridge in complex environment,and puts forward thought and orientation of research and innovation in the aspects of new system,new means and new materials,etc.

关 键 词：连续刚构桥 铁路桥梁 超高墩 跨海桥梁 无支座 桥梁设计 

分 类 号：U448.23[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]