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A Design Method for Reinforcement Bar Area of ​​Reinforced Concrete Lining Section of Tunnel

A technology of reinforced concrete and cross-sectional area, which is applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of cumbersome calculation process, achieve the effect of simplifying the design calculation process and improving design efficiency

Active Publication Date: 2019-06-04
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the maximum crack width controls the reinforcement area (reinforcement amount) of the lining section, it may be necessary to repeatedly calculate the reinforcement area (reinforcement amount) using the traditional method, and the calculation process is cumbersome

Method used

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  • A Design Method for Reinforcement Bar Area of ​​Reinforced Concrete Lining Section of Tunnel
  • A Design Method for Reinforcement Bar Area of ​​Reinforced Concrete Lining Section of Tunnel
  • A Design Method for Reinforcement Bar Area of ​​Reinforced Concrete Lining Section of Tunnel

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] refer to figure 1 , the present invention is a method for designing the reinforcement area of ​​the tunnel reinforced concrete lining section. When the eccentricity of the lining section is greater than 0.55 times the effective section height, the maximum crack width limit ω max As a known parameter, the lining section can be calculated according to the following steps to meet the maximum crack width limit ω max The required cross-sectional area of ​​longitudinal reinforcement in the tension zone A s :

[0038] ① Determine the basic calculation parameters, the basic calculation data include structural calculation internal force, structural size, physical and mechanical parameters of building materials and the maximum crack width limit ω max ;

[0039] ② Calculate the cross-sectional area A of the longitudinal reinforcement in the tension zone...

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Abstract

The invention discloses a design method for a sectional reinforcement area of a reinforced concrete lining of a tunnel. According to the method, the design calculation efficiency of the reinforced concrete lining of the tunnel is effectively improved; and the method has the characteristics of quickness and accuracy. When a sectional eccentric distance of the lining is greater than an effective sectional height by 0.55 times, a maximum crack width limit value omega max is taken as a known parameter, and then calculation is performed according to different conditions, so that a longitudinal reinforcement section area As of a tensile region of the section, meeting the requirement of the maximum crack width limit value omega max, of the lining is obtained.

Description

technical field [0001] The invention relates to a tunnel, in particular to a method for designing the cross-section reinforcement area (reinforcement amount) of the reinforced concrete lining of the tunnel. Background technique [0002] When designing the reinforced concrete lining structure of the tunnel, the internal force of the lining section is calculated according to the design load, and then the steel bar area that meets the bearing capacity requirements is calculated according to the internal force of the section and the safety factor specified in the code. When the eccentricity of the lining section is greater than 0.55 times the effective section height, A maximum crack width requirement also needs to be met. [0003] The traditional method of checking and calculating the maximum crack width is to first calculate the maximum crack width of the lining section according to the reinforcement area (reinforcement amount) that meets the bearing capacity requirements. If ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50E21D11/10
CPCE21D11/10G06F30/13
Inventor 赵东平谭信荣高焱喻渝胡炜张建风宋玉香
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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