Supercharge Your Innovation With Domain-Expert AI Agents!

Feet-arch-free principle based reinforcing type lining construction method for steel frame in tunnel transition section

A technology of gradual change section and steel frame, which is applied to the construction field of lining steel frame of the gradual change section of tunnel reinforcement by the principle of footless arch, and achieves the effect of good reinforcement effect, simple production and construction, and simplified construction.

Active Publication Date: 2015-04-01
CHINA RAILWAY NO 3 GRP CO LTD
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems existing in the existing lining construction method of the tunnel gradient section, the present invention provides a construction method for strengthening the lining steel frame of the tunnel gradient section with the principle of no foot arch

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
  • Feet-arch-free principle based reinforcing type lining construction method for steel frame in tunnel transition section
  • Feet-arch-free principle based reinforcing type lining construction method for steel frame in tunnel transition section
  • Feet-arch-free principle based reinforcing type lining construction method for steel frame in tunnel transition section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Example: Taking the grade V surrounding rock gradual change section as an example, the gradual change process of the inner arc contour line of the arch wall lining is gradually formed by the "three-centered circle" structure of the standard section DK158+836, that is, the centers of 1# circle, 2# circle, and 3# circle. The center of the 1# circle and the center of the 2# circle gradually overlap to become a circle center, and finally evolve into a "two-centered circle" structure with a widened section DK158+851.

[0020] Known parameters: L1—the length of the gradient section (15m), L2—the length of the combined template (1.5m), and the element parameters in Table 2.

[0021] Table 2: Element parameter table

[0022]

[0023] 1. Determination of the number of steel frames in the gradient section: According to the formula (1), the number n of steel arch frames to be processed in the gradient section is 11. , 2. Use formula 2) to calculate the change rate β of each g...

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 belongs to the technical field of lining construction for tunnel transition sections, provides a feet-arch-free principle based reinforcing type lining construction method for a steel frame in a tunnel transition section, an aims at solving the problems of the existing lining construction for the tunnel transition sections. The method comprises the steps of determining seven processing factor data of the steel frame, and the processing truss quantity n of the steel frame in the tunnel transition section; calculating the change rate beta per meter of the seven factors of the steel frame, and the seven processing factor data X1, X2,..., Xn of the steel frames of the n truss; calculating the seven processing factor data at each truss and the size of the transition section according to the processing truss quantity n of the steel frame in the tunnel transition section; processing a steel arch frame according to the calculation dimension, and then reinforcing the steel arch frame. According to the method, the circle center transition data analyzing technology is performed to analyze the transition rules of the circle center, so as to calculate the seven processing factors for the steel arch frame at each truss and accurately control the processing size of the steel arch frame, so as to meet the design clearance requirement; the feet-arch-free principle based reinforcing type lining construction method for the steel frame in the tunnel transition section is carried out; the reinforcing method can be conveniently operated, the reinforcing materials are high in generality, the technology saves both time and work, and the effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of lining construction of tunnel transition sections, and in particular relates to a construction method for reinforcing steel frames of tunnel transition section linings based on the principle of foot arches. Background technique [0002] At present, in the lining construction of the gradual section of the tunnel in China, one method is to use an adjustable integral lining trolley. Because the one-time investment cost of this trolley is too large and cannot be recycled, it is rarely used in construction. Another way is to use simple I-steel lining platform to construct the transition section. In the data processing of the steel frame processing size of the transition section, due to improper method, the processing size deviation of each steel frame is large, resulting in the clearance of the lining and the aesthetic appearance of the line shape. In terms of other aspects, it cannot meet the design and speci...

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 Applications(China)
IPC IPC(8): E21D11/18
CPCE21D11/20
Inventor 李繁旺李建光程川李国英李德龙李会军周国华吕燕军
Owner CHINA RAILWAY NO 3 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