城市主干路下穿高速铁路设计技术研究

Research on Design Technology of Urban Trunk Road Crossing High-speed Railway

摘要:

随着我国高速铁路的快速发展，市政道路与高速铁路交叉点位增多。受高铁桥梁桥墩的净距限制及城市主干路的宽路幅制约，下穿设计方案的合理度直接着影响工程的可行性。为实现对下穿工程在设计、施工及监测等阶段的全过程指导，首先理论分析下穿工程对高速铁路安全影响的控制要素；然后以汕头市某城市主干路下穿汕汕铁路为例，从全专业角度详细分析道路、桩板结构、管线的设计原则和方案设计要点，并利用有限元分析方法论证方案的合理性；最终系统阐述施工要求和监测水平，为类似工程提供经验。

Abstract:

With the rapid development of high-speed railway in China, the intersection of municipal roads and high-speed railway has increased. Restricted by the clear distance of high-speed railway bridge piers and the wide road width of urban trunk roads, the reasonableness of undercrossing design scheme directly affects the feasibility of the projects. In order to guide the whole process of the undercrossing engineering in the design, construction and monitoring stages, the control factors of the undercrossing engineering impact on the safety of high-speed railway are theoretically analyzed firstly. And then taking an urban trunk road crossing Shantou-Shanwei High-speed Railway in Shantou City as an example, the design principles of roads, pile plate structures and pipelines and the design essentials of the schemes are analyzed in detail from a professional perspective. And the finite element analysis method is used to demonstrate the rationality of the scheme. Finally, the construction requirements and monitoring level are systematically expounded, which provide the experience for similar projects.