Method for Determination of Equivalent Static Load of Explosion-Reinforced RC Beam with Wave Reinforcement

Abstract

The invention discloses a method for determining the equivalent static load of an RC beam with wave reinforcement, which includes the following steps: (10) Acquisition of parameters of the static bearing capacity of the component: the quasi-static uniform loading test of the RC beam with wave reinforcement and two The quasi-static uniform loading test of the wave-reinforced RC beam with wave-end waves is carried out to obtain the parameters of the static bearing capacity of the component; (20) Estimation of the dynamic coefficient of resistance: according to the parameters of the static load-bearing capacity of the component, the dynamic coefficient of the resistance of the wave-reinforced RC beam is estimated . (30) Calculation of equivalent static load: According to the dynamic coefficient of the resistance force, the equivalent static load of the explosion effect of the wave-reinforced RC beam is calculated. According to the method for determining the equivalent static load of the blasting effect of the wave-reinforced RC beam of the present invention, the error between the calculation result and the actual situation is small.

Description

technical field [0001] The invention belongs to the field of anti-explosion technology of structures and components, in particular to a method for determining the equivalent static load of an RC beam with wave reinforcement and explosion effect with little error from the actual situation. Background technique [0002] Sometimes it is inconvenient or even impossible to carry out explosion simulation or test directly on wave-reinforced RC (Reinforced Concrete, reinforced concrete) beams. In order to provide the most important input parameters for the equivalent static simulation or test of RC beams with corrugated reinforcement, the blast load needs to be equivalent to the static load. [0003] In order to obtain the equivalent static load of the blast load, it is first necessary to determine a crucial dimensionless constant when scaling the blast load—the dynamic coefficient of resistance. [0004] The document "Underground Protective Structure" (Beijing: China Water Conserv...

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Problems solved by technology

[0008] However, since the wave-reinforced RC beam produces a weak resistance platform during the stress process, it is very different from the ordinary RC beam

Only the ductility ratio β of the RC beam obtained by dividing the deflection deformation after cracking by the deflection deformation of the elastic section is substituted into this formula for calculation. Since the plane yield resistance ratio of the member and the deformation of the platform section are ignored, the calculation result of the equivalent static load is different from the actual large error

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