Bridge structure design profile finding method and device

Abstract

Embodiments of the invention provide a bridge structure design shape finding method and device, and the method comprises the steps: S1, building an initial structure model of a bridge, and carrying out the static structure analysis of the initial structure model; S2, based on a static structure analysis result, performing topological optimization on the initial structure model by taking the volumereduction amount as a constraint condition and taking the maximum rigidity as an objective function to obtain an optimized structure model; and S3, if it is known through judgment that the optimizedstructure model meets the optimization design target, taking the optimized structure model as the structure model of the bridge. According to the embodiment of the invention, topological optimizationis carried out on an initial structure model by taking the volume reduction amount as a constraint condition and taking the maximum rigidity as an objective function. Compared with an initial structure model obtained by a traditional bridge design method, the obtained optimized structure model has higher stress and lower mass, so that the material cost can be reduced, and greater economic benefitscan be obtained.

Description

technical field [0001] The embodiments of the present invention relate to the field of structural design, and more specifically, to a type-finding method and device for bridge structure design. Background technique [0002] The design goal of the bridge structure is to meet the performance requirements at the minimum cost. In traditional structural design, the initial shape of the structure is mainly derived from the experience and intuition of the designer. Although the structure needs to be further optimized and checked to ensure that it meets various requirements on this basis, the structural form will not change much. At the early stage of structural design, every decision has an important and profound impact on the performance of the structure throughout its life cycle. The traditional design mode based on experience and intuition has great chance and blindness, and limits the innovation of bridge system and form to a certain extent. Contents of the invention [00...

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Problems solved by technology

The traditional design mode based on experience and intuition has great chance and blindness, and limits the innovation of bridge system and form to a certain extent

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