Shield tunnel section structure based on city D-type vehicle clearance design

Abstract

The invention discloses a shield tunnel section structure based on city D-type vehicle clearance design. The shield tunnel section structure comprises a shield tunnel segment, and a track structure and a city D-type vehicle are sequentially arranged in the shield tunnel segment from bottom to top; an evacuation platform is fixed to the side edge of the shield tunnel segment and positioned betweenthe building clearance in the segment and the vehicle clearance of the city D-type vehicle; and an electrical device and a firefighting device are arranged on the two sides of the track structure. According to the scheme, the requirements of the vehicle clearance, the building clearance, structural arrangement, equipment installation, personnel evacuation and other aspects are fully considered, the requirement for train driving safety is met, interference between a train and a building and equipment is avoided, thereby reasonably effectively ensuring that over-limit problem cannot be caused inthe vehicle driving process, the tunnel section area is reduced, and the engineering investment is reduced.

Description

technical field [0001] The invention belongs to the field of urban railway tunnels, and in particular relates to a section structure of a shield tunnel based on the boundary design of D-type vehicles in the urban area. Background technique [0002] Common tunnel mining methods include mining method, roadheader method, immersed tube method, jacking method, open cut method, etc. According to the importance of the project, engineering geological conditions, hydrogeological conditions, construction technical conditions, economic value, construction safety conditions, environmental protection requirements, etc., combined with the technical characteristics of different mining methods, select the most suitable mining method. [0003] A shield tunnel is a structure formed by tunneling with a shield machine while assembling segments. The structure is generally circular. When constructing high-speed railways, subways and highways, when encountering geological conditions with soft soi...

AI Technical Summary

Problems solved by technology

[0004] Existing tunnel section forms include those designed for cars, subways, and EMUs. These sections are often designed according to specific limits. When the vehicle type changes, the section form will not change, which will cause the vehicle to exceed the limit, and the surrounding buildings and equipment. Interference occurs, endangering driving safety, or the cross-sectional area is too large, resulting in waste of human and financial resources

The urban railway connects the metropolis and the satellite city, and it is defined as between urban rail transit and high-speed trains. The vehicle type is different from subway vehicles and high-speed EMUs. The existing shield tunnel section cannot be effectively matched, and improvements need to be made for the boundary. Make the cross-sectional area as small as possible under the premise of meeting the vehicle limit requirements

Images