Unlock instant, AI-driven research and patent intelligence for your innovation.

Optimum Design Method for Stiffness and Construction Timing of Secondary Lining Structure of Tunnel with Weak Rheological Surrounding Rock

A technology of secondary lining and structural rigidity, applied in the direction of tunnel lining, tunnel, shaft lining, etc.

Active Publication Date: 2021-04-06
NINGBO COMM PLANNING INST CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the common problems in the design of the existing tunnel lining structure, and to provide an optimal design theory and method for the reasonable stiffness and the best timing of the secondary lining structure of the soft rheological surrounding rock tunnel

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
  • Optimum Design Method for Stiffness and Construction Timing of Secondary Lining Structure of Tunnel with Weak Rheological Surrounding Rock
  • Optimum Design Method for Stiffness and Construction Timing of Secondary Lining Structure of Tunnel with Weak Rheological Surrounding Rock
  • Optimum Design Method for Stiffness and Construction Timing of Secondary Lining Structure of Tunnel with Weak Rheological Surrounding Rock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments.

[0026] Combined with the engineering practice of a rheological soft rock tunnel in a mountainous area, the structure of the secondary lining is optimally designed. Based on the calculation, operation and implementation of the above research results, the specific implementation of this method is made in this section as follows.

[0027]The tunnel has a gross width of 18.66m and a gross height of 12.71m. The entrance and exit are loose and broken rocks, shallow buried tunnel sections, and the fault fracture zone and joint-intensive zone in the cave are all excavated using the optimized CRD construction method. The excavation sequence is as follows: the upper half section of the left pilot pit - the upper half section of the right pilot pit - the lower half section of the left pilot pit - the lower half section of the right pilot ...

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 method for optimally designing the rigidity of a secondary lining structure of a tunnel with weak rheological surrounding rock and its construction timing, and belongs to the technical field of civil engineering. This method combines three-dimensional viscoelastic / viscoelastic-plastic numerical simulation calculation with the "convergence-constraint characteristic curve method" to optimize the stiffness and construction timing of the secondary lining structure of tunnels with weak rheological surrounding rock. The method provided by this invention, in addition to theoretical significance, also has important engineering practical value, and its economic benefits will be very considerable. are very significant.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to an optimal design method for the stiffness of the secondary lining structure of a tunnel with weak rheological surrounding rock and its construction timing. Background technique [0002] Since the beginning of the 21st century, my country's cross-mountain tunnels and various rock underground projects have achieved unprecedented rapid development, but there are problems in engineering design, such as: the fuzziness and random changes in the mechanical characteristics of the tunnel lining structure in each stress deformation stage Uncertainty of the load, uncertainty of mountain loads, incompleteness of underground engineering construction information, etc., all need to be systematically explored in depth to achieve the basic requirements of design safety, rationality, applicability and economy. [0003] In addition, due to the complexity of on-site constructio...

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): G06F30/13E21D11/00G06F119/14G06F111/10
Inventor 陈孟冲孙钧朱汉华荣耀张承客
Owner NINGBO COMM PLANNING INST CO LTD