对城市轨道交通既有线技术改造的思考

Considerations about Technical Reform for the Operated Urban Rail Transit Lines

从建立改造评价体系、加强改造工程技术风险研究、改造工程对新线建设的启示3个方面,对城市轨道交通既有线技术改造进行阐述,提出既有线改造技术的发展方向。改造评价体系主要包括前期规划、风险控制、改造指标考核,改造方案要有系统性、完整性,并做好工程筹划。改造工程对新线建设的启示有:提高隧道联络通道的设置密度,在墙、板、梁等部位适当预留孔洞,为未来新增管线创造条件;合理控制车站规模;适当考虑设计标准的前瞻性;车站设计为端头厅有利于节能。

Based on setting up the evaluation system of reform,strengthening the study on project technical risk and the inspiration from the reform on the construction of new lines,the development orientation of technical reform for the operated urban rail transit lines is presented in this article.The reform scheme should be systematic and perfect with the project planning prepared beforehand.The inspirations from the reform project to the new line construction inlude：increasing the density of connection passages between tunnels;reserving holes on walls and beams for installing new pipe facilities in the future;properly controlling the station scale;properly considering the design criteria and the end-hall design of the station for energy-saving.