Method and system for calculating overall elasticity modulus of cracked reinforced concrete

A technology of reinforced concrete and elastic modulus, which is applied in the field of infrastructure engineering to achieve the effect of clear mechanical concept, simple calculation and simple calculation method

Active Publication Date: 2019-10-25
GUANGDONG RES INST OF WATER RESOURCES & HYDROPOWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is still a lack of effective methods for calculating the stress stiffness of reinforced concrete after cracking.

Method used

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  • Method and system for calculating overall elasticity modulus of cracked reinforced concrete
  • Method and system for calculating overall elasticity modulus of cracked reinforced concrete
  • Method and system for calculating overall elasticity modulus of cracked reinforced concrete

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Embodiment Construction

[0059] The present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments of the description. For the step numbers in the embodiment of the present invention, it is only set for the convenience of explanation and description, and there is no limitation on the order of the steps. The execution order of each step in the embodiment can be carried out according to the understanding of those skilled in the art Adaptive adjustment.

[0060] refer to figure 1 , the embodiment of the present invention provides a method for calculating the bulk modulus of elasticity of cracked reinforced concrete, comprising the following steps:

[0061] Analyze the stress-strain performance data of the steel bars and concrete at the cracking position of the concrete;

[0062] Based on the stress-strain performance data, the tensile mechanical model of reinforced concrete at the crack position is established;

[0063] Determine ...

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Abstract

The invention discloses a method and a system for calculating the overall elastic modulus of cracked reinforced concrete. The method comprises the following steps of analyzing and simplifying the common stress characteristic of the reinforced concrete at a crack position; then determining the lengths of the steel bars with higher stress on the two sides of the crack; combining and considering thesimplification result of the crack position and the calculation result of the length of the tensioned steel bar; finally, obtaining the overall elasticity modulus of the cracked reinforced concrete. The method is clear in mechanical concept and simple and convenient to calculate, an effective, simple and convenient practical calculation method can be provided for modulus change of the cracked reinforced concrete, reference can be provided for composite linings and other projects needing to apply modulus change application after concrete cracking, and the method can be widely applied to the technical field of capital construction projects.

Description

technical field [0001] The invention relates to the technical field of infrastructure engineering, in particular to a method and system for calculating the integral modulus of elasticity of cracked reinforced concrete. Background technique [0002] High-pressure water delivery tunnel is an important structural type in water delivery engineering. If reinforced concrete lining is used, the lining will easily crack under high internal water pressure; If the elastic modulus of the inner lining changes before and after cracking, the stress state of the outer lining and surrounding rock will also change accordingly. [0003] It can be seen that the change of elastic modulus before and after cracking of reinforced concrete lining is the key to the joint stress of composite lining and surrounding rock. At present, there is still a lack of an effective method for calculating the stress stiffness of reinforced concrete after cracking. Contents of the invention [0004] In view of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01N3/08
CPCG01N3/08G01N2203/0075G01N2203/0682G01N2203/0017G06F30/20G06F30/13Y02T90/00
Inventor 杨光华贾恺姜燕徐传堡李志云
Owner GUANGDONG RES INST OF WATER RESOURCES & HYDROPOWER
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