Method and system for acquiring ultimate bearing capacity and failure mode of special-shaped structural slab

Abstract

The embodiment of the invention provides a method and system for acquiring ultimate bearing capacity and failure mode of special-shaped structural slab, and the method comprises the following steps: carrying out the discrete processing of the special-shaped structural slab through employing a grid dot matrix based on a numerical analysis model of the special-shaped structural slab according to a plastic stranded wire theory, and obtaining a plurality of nodes and connecting lines among the plurality of nodes; solving a preset mathematical optimization equation to obtain a structural ultimate failure load coefficient and a critical failure mode of the special-shaped structural plate; wherein the preset mathematical optimization equation taking the plurality of nodes and connecting lines among the plurality of nodes as research objects, and taking a node geometric compatibility equation, a flow rule and a boundary condition as constraint modulation conditions. It avoids the deficienciesof the artificially assumed yield line failure mode in the prior art, improves the calculation efficiency and accuracy of determining the ultimate bearing capacity of the special-shaped structural plates, and more directly reveals the damage of the plate structure, enriches the structural design and the analysis methods of the researchers and method.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of structural engineering, and more specifically, to a method and system for acquiring the ultimate bearing capacity and failure mode of a special-shaped structural plate. Background technique [0002] Reinforced concrete slabs are one of the main load-bearing members in structural engineering and are widely used. Since the elastic design cannot effectively utilize the plastic properties of the material and the economy is poor, it is inevitable to consider the plasticity development of the design formed by the ductile material, and the determination of the plastic limit bearing capacity of the plate has an important guiding role for the plastic design in the engineering design . [0003] For limit state analysis of reinforced concrete slabs, limit analysis and numerical simulation methods are usually used. Compared with the numerical simulation method, such as the finite element m...

AI Technical Summary

Problems solved by technology

Due to the complex geometric shape or action load form of the special-shaped plate structure, it is difficult to work in the conventional method (graphic method or trial method), and sometimes it is not feasible, so it is subject to many restrictions in engineering applications, and the scope of application is limited.

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