Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Construction method of complex overlapping tunnels in urban rail transit

A technology for urban rail transit and tunnel construction, which is applied in the field of traffic road construction, can solve the problems of complex overlapping tunnel construction methods, large cross-section changes of overlapping tunnels, and frequent staggering, and achieve the effects of shortening the construction period, significant economic benefits, and shortening the construction period

Active Publication Date: 2020-12-01
RANKEN RAILWAY CONSTR GROUP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: for overlapping tunnels with large section changes, frequent staggering, and long overlapping sections, construction is difficult and progress is slow. Due to the delay in demolition of the second lining and the slow construction of the second lining, the construction period was ensured, the structure was stable and the construction was safe.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Construction method of complex overlapping tunnels in urban rail transit
  • Construction method of complex overlapping tunnels in urban rail transit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The invention provides a rapid construction method for complex overlapping tunnels of urban rail transit, and the specific technological process is as follows:

[0037] Excavation→initial support, temporary support→inverted arch construction, and at the same time remove the upper temporary support→remove the lower temporary support→construction of the second lining of the lower side wall and driving slab→construction of the second lining of the upper arch wall.

[0038] The specific construction method is as follows:

[0039] Step 1: Use the CRD method to excavate, and apply initial support and temporary support, and divide the large-section tunnel into 8 relatively independent pilot tunnels for construction. The number of the pilot tunnels is from left to right, from The order from top to bottom is sorted as guide holes 1-8, such as figure 1 shown.

[0040] Specifically, the operation is as follows:

[0041] (1) The tunnel is constructed by smooth blasting. In the p...

Embodiment 2

[0069] A section of the Chongqing Rail Transit Loop Line consists of one station and two sections. The two section tunnels have a typical overlapping tunnel of 710m in total, including five sections of E, F, 5, 6, and 7. The clearance and length of the sections are different, and Cross-sections are frequently staggered. Aiming at the characteristics of the overlapped tunnels with frequent staggered sections and long overlapping sections, in order to ensure the construction period and construction safety, according to the actual geological conditions, the present invention provides a rapid construction method for urban rail transit complex overlapping tunnels, which effectively restrains the construction of the second lining Due to the lag of temporary support and the slow construction of the secondary lining, the self-stabilizing ability of the secondary lining structure was enhanced, the construction safety was ensured, and the construction period was ensured, which was succes...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an urban rail traffic complex overlapping tunnel construction method. The urban rail traffic complex overlapping tunnel construction method comprises the following steps that 1, excavation is conducted by adopting a CRD method, preliminary supporting and temporary supporting are conducted, a large-section tunnel is divided into eight relatively independent pilot tunnels tobe constructed separately, and the serial numbers of the pilot tunnels are sequentially sorted from one to eight according to the sequence from left to right and the sequence from top to bottom; 2, inverted arch construction and upper temporary supporting dismantling construction are synchronously conducted; 3, after construction in the step 2 reaches the safe construction distance, lower temporary supporting is dismantled; 4, lower side wall and driving plate second lining construction is conducted by adopting a sizing hydraulic trolley; and 5, after construction in the step 4 reaches the qualified strength and the safe distance, upper arch wall second lining construction is conducted by adopting a simple formwork bracket. According to the urban rail traffic complex overlapping tunnel construction method, the problems that second lining lags due to temporary supporting dismantling and second lining construction is slow are effectively solved, the construction period is guaranteed, andit is guaranteed that the structure is stable, and construction is safe.

Description

technical field [0001] The invention relates to the technical field of traffic road construction, in particular to a construction method for complex overlapping tunnels of urban rail transit. Background technique [0002] The height of the heavy fall tunnel of the subway is high, and the section changes greatly, which makes the construction difficult and the progress slow. In particular, the CRD method is generally used to excavate and support overlapping tunnels by the drill and blast method, and the construction of conventional inverted arches and secondary linings cannot be constructed until the temporary support is removed. If the temporary support is removed too early, it will affect the stability of the primary support structure, and if it is removed too late, it will affect the construction progress of the inverted arch and the secondary lining structure. In this era when work efficiency is economic benefits, how to quickly complete the inverted arch and the secondar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/10E21D11/18E21D11/38E21D11/40
CPCE21D9/00E21D11/10E21D11/107E21D11/18E21D11/381E21D11/383E21D11/40
Inventor 廖建东方涛彭艳郭俊强韩永刚邵文彬
Owner RANKEN RAILWAY CONSTR GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com