成都至自贡高速铁路引入天府机场方案分析

Scheme Analysis of Introducing Chengdu-Zigong High-speed Railway into Chengdu Tianfu International Airport

成都至自贡高速铁路以时速350 km斜向下穿同步建设的天府国际机场航站区并在航站区负二层设站,引入方案复杂,控制因素众多,且诸多方面尚无工程经验可供借鉴。本文从两个方面对高铁引入机场方案进行了分析,一是宏观到局部逐步比选了高铁引入机场线路方案,梳理了高铁引入机场线路方案的主要控制因素和边界条件,总结了高铁引入机场线路方案比选的思路、方法和原则;二是从振动、隧道结构安全、空气动力学效应及电磁干扰等方面对高铁引入机场方案的关键技术进行了分析,验证高铁引入机场方案合理性,并对工程措施的设置提出了指导性意见。

Chengdu-Zigong High-speed Railway underpasses the terminal area of Chengdu Tianfu International Airport at a speed of 350 km/h in an oblique direction,with a station set up on the second basement floor of the terminal area.The introduction scheme is complicated and there are many control factors,and there is no engineering experience in many aspects for reference.This paper analyzes the scheme of introducing the high-speed railway into the airport from two aspects.Firstly,the schemes are compared and selected from macro to local,the main control factors and boundary conditions of the schemes are sorted out,and the thoughts,methods,and principles of comparison and selection of schemes are summarized;second,it analyzes the key technologies of the schemes from the aspects of vibration,tunnel structure safety,aerodynamic effect,and electromagnetic interference,verifies the rationality of the schemes,and puts forward guiding opinions on the setting of engineering measures.