Optimization design method of drainage structure based on VR-BIM technology

Abstract

The invention discloses an optimization design method of a drainage structure based on a VR-BIM technology. The innovative application of the VR-BIM technology in the field of drainage and energy dissipation structure design is achieved, according to the core of the method, water flow physical characteristics and water flow and structure collision characteristics are simulated in a VR platform, and a VR water flow subsystem is formed. According to the system, a smoothed particle hydrodynamics (SPH) method is used for simulating the water flow physical characteristics, a tree-shaped search method is used for searching for closest adjacent particles, and a condition is provided for simulation of interaction of water drop particles. Finally, in the VR platform, by using a fluid-solid collision design method based on a bounding box technology, a drainage structure BIM information model and a VR water flow subsystem which are generated at the primary design stage are fused into a VR-BIM system, and according to the water flow state in the system and hydraulics element distribution rules, whether or not the drainage and energy dissipation design is reasonable is judged. If not, corresponding optimization is conducted, and meanwhile the BIM information model is updated until the hydraulic engineering and hydraulics requirement is met.

Description

technical field [0001] The invention relates to a method for optimal design of a drainage structure based on VR-BIM technology, which belongs to the field of wading engineering design. Background technique [0002] The optimal design of hydraulic structure discharge and energy dissipation plays an important role in the design of dam engineering. The structural shape of the discharge dam surface, the opening method of the gate and the design of energy dissipation work have a great influence on the discharge flow. The traditional method is to rely on empirical formulas and hydraulic model tests, but this method is time-consuming, laborious and expensive. At the same time, the hydraulic model experiment is carried out in the laboratory. According to the corresponding model laws, the model is made in a reduced scale for simulation experiments. The model fluid flow and the prototype water flow should satisfy geometric similarity, similarity in motion and similarity in dynamics. ...

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Problems solved by technology

However, the numerical simulation method has shortcomings such as real-time performance and poor interactivity, and there is an "information island" effect between t

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