Check patentability & draft patents in minutes with Patsnap Eureka AI!

Design method for local pre-buried channel of contact network foundation of shield tunnel of high-speed railway

A technology of pre-buried channels and shield tunnels, which is applied to tunnels, tunnel linings, mining equipment, etc., and can solve problems such as large hole diameters, low channel utilization rates, and engineering waste

Active Publication Date: 2021-07-23
CHINA RAILWAY DESIGN GRP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relatively speaking, large-diameter shield tunnels for railways have the characteristics of large hole diameters and pipelines entering troughs. The channel utilization rate of the full-ring pre-buried method is low, which will cause great project waste

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
  • Design method for local pre-buried channel of contact network foundation of shield tunnel of high-speed railway
  • Design method for local pre-buried channel of contact network foundation of shield tunnel of high-speed railway
  • Design method for local pre-buried channel of contact network foundation of shield tunnel of high-speed railway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Taking a domestic high-speed rail large-diameter shield tunnel project as an example, the present invention will be described in detail below with reference to the accompanying drawings and embodiments. The cross-sectional view of the shield tunnel scheme is as follows figure 1 As shown, the design speed of the shield section is 120km / h, the inner diameter of the segment is 11.1m, the outer diameter is 12.2m, the ring width is 2m, the minimum curve radius is 800m, and the design wedge is 64mm.

[0029] like Figure 2-10 As shown, a design method for local pre-embedded channels of the catenary foundation of large-diameter shield tunnels for high-speed railways, including catenary pre-embedded channels optimization, pre-embedded channel segment ring structure design, pre-embedded channel segment ring arrangement Cloth design, segment assembly design of different line segments. Specifically include the following steps:

[0030] (i) Optimization of catenary pre-buried cha...

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 a design method for a local pre-buried channel of a contact network foundation of a large-diameter shield tunnel of a high-speed railway. The design method for the local pre-buried channel of the contact network foundation of the large-diameter shield tunnel of the high-speed railway comprises the following steps of (1) optimizing the type of the pre-buried channel of a contact network, and selecting a proper type as required; (2) carrying out targeted design on a duct piece structure and determining an annular duct piece scheme of the pre-buried channel by combining the engineering general situation and the function requirements of the pre-buried channel of the contact network; (3) arranging and designing the cross section and the longitudinal section of an annual duct piece of the pre-buried channel on the basis; and (4) carrying out annual splicing design on the channel of different curve sections on the basis of the step (3). The design method for the local pre-buried channel of the contact network foundation of the large-diameter shield tunnel of the high-speed railway is systematically provided for the first time, the application range is wide, the channel utilization rate is high, hanging of the contact network in the shield tunnel of the high-speed railway can be completed safely, reliably and precisely, meanwhile, damage to the duct piece structure is avoided, the durability of a project is guaranteed, and the method has very high application and popularization values.

Description

technical field [0001] The invention relates to the field of design of high-speed railway shield tunnels, in particular to a design method for partial pre-buried channels of catenary foundations of large-diameter shield tunnels of high-speed railways. Background technique [0002] The catenary foundation installation methods in railway tunnels mainly include post-planted anchor bolts and pre-embedded channels. The post-planting anchor bolt is to drill holes in the tunnel structure, and provide a fulcrum for the catenary foundation by implanting chemical anchor bolts; the pre-embedded channel refers to pre-embedding the channel in the structure during the tunnel lining pouring process. The force between it and the concrete provides a fulcrum for the catenary foundation. Compared with the traditional post-planting anchor bolt method, the pre-embedded channel has the advantages of no damage to the tunnel structure, high strength, good durability, corrosion resistance, convenie...

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
IPC IPC(8): E21F17/02E21F17/06E21D11/08
CPCE21F17/02E21F17/06E21D11/08
Inventor 苏伟冯天炜孟庆余王乐明刘撞撞苏哿曾青夏勇吴强王平王朋乐李佳琪韩璐
Owner CHINA RAILWAY DESIGN GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com