Integrate the layout of subway stations and sections in a single section and mechanized rapid construction methods

Abstract

The invention discloses a layout and construction steps for integrating subway stations and sections in a single section, wherein the layout includes large-diameter single-hole tunnels that meet the requirements of double-layer subway tunnel boundaries and station platform hall building boundaries. The station hall section with functions such as access and buffering of passenger flow is tested; the underground shopping mall section is extended on both sides of the station hall floor; the construction method includes the following steps: using a large-diameter shield, and using a tunnel boring machine to construct several sections and stations at one time; Construction of the station platform plate and other structures in the station part of the diameter shield, and set up the wiring, and carry out the secondary construction of the station structure at the station; construct the urban pipe gallery, civil air defense, etc. in the spare space of the tunnel; construct the internal structure in the main line of the tunnel; Line track laying, electromechanical installation and decoration, joint debugging and joint testing, and trial operation; the construction method of the invention has the advantages of small comprehensive influence, fast construction speed, high safety factor, few abandoned projects, good quality assurance, and excellent comprehensive benefits.

Description

technical field [0001] The invention relates to the technical field of subway construction, in particular to a mechanized rapid construction method integrating the layout of subway stations and sections in a single section. Background technique [0002] The subway is an effective means of transportation to solve the congestion in the city, especially its prosperous core area. The construction of traditional subway stations generally adopts the open-cut method, cover-cut method and / or shallow buried method. Urban subway construction has made great contributions, but various methods also have the following shortcomings: [0003] 1. Various methods have a great impact on the city’s image, traffic, and commerce, especially in core areas; for example, open-cut and cover-cut subway stations generally need to occupy urban road traffic, carry out traffic guidance and reform, and have an impact on the flow of people in urban shopping malls, shops, etc. At the same time, construction...

AI Technical Summary

Problems solved by technology

[0003] 1. Various methods have a great impact on the city’s image, traffic, and commerce in the city, especially in the core area; such as the cut-and-cover method and the cover-and-excavation method, subway stations generally need to occupy urban road traffic and carry out traffic guidance reforms, which have an impact on the flow of people in urban shopping malls, shops, etc. At the same time, construction noise, earthwork dust, greening migration, etc. will have an impact on urban residents, and will have a long-term and large impact on the city's traffic, commerce, comprehensive image and people's production and life;

[0004] 2. The cost of demolition, modification and relocation is huge, and coordination is difficult and time-consuming;

[0005] 3. Open-cut and cover-excavated foundation pits and underground excavation tunnels require measures such as temporary enclosure structures and precipitation, which are expensive;

[0006] 4. It has a great impact on noise and environmental protection, and at the same time, the construction is affected by the weather and has a great impact on the construction period;

[0007] 5. Labor-intensive and low degree of mechanization;

[0008] Sixth, the process and process conversion is complicated, and the shield machine needs to start and receive multiple times;

[0009] 7. The safety risk is high and it is easy to collapse; the quality of waterproof and concrete is not easy to guarantee;

[0010] In addition, because the reinforced concrete structure is basically on-site construction, the operating conditions and environment are limited, and it is extremely difficult to guarantee waterproofing and concrete quality, which may easily lead to unstable quality, resulting in insufficient concrete strength, honeycomb pockmarks, and serious water leakage, which brings great harm to safe operation. major hidden danger

[0011] Due to the above-mentioned problems in the existing subway construction technology, it is the current technology to develop a subway construction method that has little comprehensive impact on the existing city image, fast construction speed, high safety factor, less abandoned projects, good quality assurance, and excellent comprehensive benefits. Problems that people need to solve

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