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High-precision numerical simulation calculation method for carrying out static characteristic analysis on concrete gravity dam based on h-p type finite element method

A finite element method and numerical simulation technology, applied in the field of simulation, can solve the problems of large error, slow convergence speed, low precision, etc., and achieve the effect of avoiding repeated calculation, saving calculation cost, and good inheritance.

Active Publication Date: 2019-07-23
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

The technical problem solved by the present invention is: the existing simulation calculation technology based on the traditional finite element method applied in the analysis of hydraulic structures, due to the limitations of the calculation method itself, the calculation results cannot meet the needs of practical engineering applications, such as in the actual engineering problems When performing numerical simulation calculations, the convergence speed is slow, the error is large, and the accuracy is low

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  • High-precision numerical simulation calculation method for carrying out static characteristic analysis on concrete gravity dam based on h-p type finite element method
  • High-precision numerical simulation calculation method for carrying out static characteristic analysis on concrete gravity dam based on h-p type finite element method
  • High-precision numerical simulation calculation method for carrying out static characteristic analysis on concrete gravity dam based on h-p type finite element method

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Embodiment 1

[0060] A hydropower station is developed in the form of dykes. The central hub is composed of barrages, flood discharge and sediment discharge structures, water tending power generation systems, vertical ship lifts, and alternating power stations. The material of the river retaining dam is a roller compacted concrete gravity dam, the entire dam crest elevation is as high as 622m, and the entire maximum dam height is 108m. The normal storage level of the reservoir is at 612m. The rock performance parameters used in the calculation are as follows:

[0061] Mass density: 2.8t / m 3 , Poisson's ratio: 0.25, elastic modulus: 10000MPa; the concrete parameters used in the gravity dam are as follows: mass density: 2.4, Poisson's ratio: 0.2, elastic modulus: 22000MPa; the parameters used in the plant are as follows: mass density: 2.50t / m 3 , Poisson's ratio: 0.167, elastic modulus: 25500MPa.

[0062] The main loads used in the design calculations of concrete gravity dams are as follow...

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Abstract

The invention relates to a high-precision numerical simulation calculation method for carrying out static characteristic analysis on concrete gravity dam based on h-p type finite element method, and belongs to the technical field of simulation. The high-precision numerical simulation calculation method for carrying out static characteristic analysis on concrete gravity dam based on h-p type finiteelement method comprises the following steps of building a calculation model of the hydraulic concrete gravity dam; calculating a displacement field and a stress field of the hydraulic concrete gravity dam model by a h-p type finite element method; judging whether the obtained displacement field and stress field meet the precision requirement or not, if the obtained displacement field and stressfield do not meet the precision requirement, encrypting the grid again, improving the order of the interpolation polynomial, and repeating the steps until a satisfactory result is obtained. The invention provides a novel high-precision finite element calculation and analysis method for a concrete gravity dam in order to solve the problems that an existing concrete gravity dam model based on traditional finite element static analysis is too long in calculation time, too large in error and low in precision.

Description

technical field [0001] The invention relates to a high-precision numerical simulation calculation method for analyzing the static characteristics of a concrete gravity dam based on an h-p type finite element method, and belongs to the technical field of simulation. Background technique [0002] Gravity dam is one of the earliest important dam types used by human beings. Because of its simple design and construction, strong reliability, good adaptability to terrain, and high durability, it has been widely used. Effective safety assessment standards for hydraulic structures are generally aimed at the displacement and stress of each part of the dam body. When the displacement and stress exceed the safety standard, the dam body will be damaged, so static analysis (including stress analysis and displacement analysis) is a research It is an inevitable and significant topic in hydraulic structures. At present, the calculation methods of static analysis in the safety analysis of hy...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23G06F2119/06
Inventor 张建铭高峰武亮陆阳春
Owner KUNMING UNIV OF SCI & TECH
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