2015•Unpublished venueRequires access

Application and Prospect Analysis of Large-Diameter Shield-Driven Tunnels Combined with Enlarged Metro Stations

Hong Li

Abstract

Considering that complex construction environments bring more and more challenges to metro construction, and based on the construction of the large-diameter shield-driven tunnel and enlarged station at the North Dongfeng Bridge- Jingshun Road section of Beijing Metro line 14, this paper discusses the problems encountered in the preliminary planning and design stage, such as a limited selection of alignments, a limited selection of construction methods, and rigorous external environment requirements. In this context, the combined construction method of a large-diameter shield-driven tunnel with an enlarged metro station is presented. Based on design optimization, process control, and a construction cost comparison, this construction method is proved to be technically feasible and cost effective.

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Key concepts: Shield, Bridge (graph theory), Context (archaeology), Engineering, Civil engineering, Beijing, Process (computing), Selection (genetic algorithm)