A reinforced concrete structural member evaluation method based on an equivalent single-degree-of-freedom method

A technology for reinforced concrete and reinforced concrete beams, which is applied in the field of reinforced concrete structural member evaluation by the effective single-degree-of-freedom method, and can solve the problems of accuracy of damage analysis, failure of structural shear damage, failure of analysis and calculation of explosive load conditions, etc.

Pending Publication Date: 2019-05-10
INST OF DEFENSE ENG ACADEMY OF MILITARY SCI PLA CHINA
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Problems solved by technology

[0002] At present, there are two main problems in the application of the equivalent single-degree-of-freedom method analysis method for structural damage under explosive loads: (1) the analysis and calculation of explosive loads with non-uniform loading cannot be performed; (2) the structural shear cannot be calculated. These problems restrict the accuracy of the equivalent single-degree-of-freedom method algorithm for rapid damage analysis of reinforced concrete structures

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  • A reinforced concrete structural member evaluation method based on an equivalent single-degree-of-freedom method
  • A reinforced concrete structural member evaluation method based on an equivalent single-degree-of-freedom method
  • A reinforced concrete structural member evaluation method based on an equivalent single-degree-of-freedom method

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Embodiment Construction

[0059] The present invention is described in conjunction with accompanying drawing and specific embodiment:

[0060] An evaluation method for reinforced concrete structural members based on an equivalent single-degree-of-freedom method, the specific steps of the evaluation method are as follows:

[0061] 3) 1) The maximum allowable ductility rate and support rotation angle of the selected component type are determined by the protection design level; the damage level of bending failure is determined by the angle of the support rotation angle θ, when θ is 2°, 5° and 12° The corresponding damage levels are mild damage, moderate damage and severe damage; the damage level of shear failure is judged by the size of shear strain γ, when γ is 0.5%, 1% and 1.5%, the corresponding damage levels for minor injuries, moderate injuries and severe injuries;

[0062] (2) Calculate the equivalent blast load and establish the construction resistance function R(x);

[0063] Assuming that the re...

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Abstract

The invention belongs to the technical field of weapon damage assessment, and provides a reinforced concrete structural member assessment method based on an equivalent single-degree-of-freedom method.The reinforced concrete structural member evaluation method based on the equivalent single-degree-of-freedom method comprises the steps that determining the maximum allowable ductility and the support corner of a selected member type according to the protection design grade; calculating an equivalent explosion load and establishing a resistance function R (x); wherein the equivalent uniform distribution peak explosion pressure is unrelated to the length-width ratio a of the reinforced concrete slab and is only related to the peak pressure of four feature points; comparing the calculated maximum ductility and the support corner with the pre-maximum allowable ductility and the support corner; if the calculated response satisfies an allowable response, the component is secure, otherwise thecomponent reaches a corresponding damage level. According to the method, the damage effect of the target can be quickly calculated by combining a relatively accurate equivalent single-degree-of-freedom analysis method.

Description

technical field [0001] The invention belongs to the technical field of weapon damage assessment, and in particular relates to an assessment method for reinforced concrete structural components based on an equivalent single-degree-of-freedom method. Background technique [0002] At present, there are two main problems in the application of the equivalent single-degree-of-freedom method for structural damage under blast loads: (1) the analysis and calculation of blast loads with non-uniform distribution cannot be performed; (2) the structural shear cannot be calculated. These problems restrict the accuracy of the equivalent single-degree-of-freedom method algorithm for rapid damage analysis of reinforced concrete structures. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to propose a method for evaluating reinforced concrete structural members based on the equivalent single degree of freedom method. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 汪维吴飚刘瑞朝周松柏任新见杨建超赵强周朝阳黄家蓉
Owner INST OF DEFENSE ENG ACADEMY OF MILITARY SCI PLA CHINA
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