Method for building numerical simulation model of hydraulic engineering asphalt concrete

An asphalt concrete and numerical simulation technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of inability to accurately evaluate the mechanical properties of asphalt concrete, difficulty in comprehensively controlling the quality of on-site construction, and large differences in test results. Achieve the effect of reducing the test workload, reducing the test cost, and reducing the discreteness

Inactive Publication Date: 2014-02-26
HOHAI UNIV
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Problems solved by technology

It can be seen that the mechanical parameters of asphalt concrete measured according to indoor physical tests are very sensitive to the mechanical properties of asphalt concrete due to factors such as test methods, test conditions, and measurement techniques, and the results of indoor physical tests are highly

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  • Method for building numerical simulation model of hydraulic engineering asphalt concrete
  • Method for building numerical simulation model of hydraulic engineering asphalt concrete
  • Method for building numerical simulation model of hydraulic engineering asphalt concrete

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Embodiment Construction

[0028] The technical scheme of the present invention will be described in detail below in conjunction with the drawings:

[0029] The inventive idea of ​​the present invention is based on the inherent mechanism of hydraulic asphalt concrete, with the help of mesomechanics and discrete element methods, through high-precision CT scanning and reconstruction technology, a numerical simulation model is established and the meso-parameters are inverted based on indoor physical test data , So as to obtain a hydraulic asphalt concrete numerical simulation model that more accurately reflects the actual situation; then the established hydraulic asphalt concrete numerical simulation model can be used to calculate the physical and mechanical characteristic parameters, and the optimal hydraulic asphalt concrete mix ratio can be determined according to the actual needs of the project , Or based on the testing data of the project site, through the established hydraulic asphalt concrete numerical ...

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Abstract

The invention discloses a method for building a numerical simulation model of hydraulic engineering asphalt concrete. The method includes steps of 1, manufacturing hydraulic engineering asphalt concrete test samples with a required mixture ratio, and actually measuring stress-strain curves of the various hydraulic engineering asphalt concrete test samples; 2, acquiring internal microstructures of the hydraulic engineering asphalt concrete test samples and building an initial numerical simulation model corresponding to the hydraulic engineering asphalt concrete test samples according to the internal microstructures; 3, using the stress-strain curves obtained in the step 1 as targets to adjust microcosmic parameters of the initial numerical simulation model by an optimization inversion process, enabling actually measured stress-strain curves to be matched with the stress-strain curves which are acquired by means of computation by the aid of the numerical simulation model so as to obtain the numerical simulation model of the hydraulic engineering asphalt concrete with the mixture ratio. The invention further discloses a method for determining the optimal mixture ratio of the hydraulic engineering asphalt concrete and a method for evaluating the construction quality of the hydraulic engineering asphalt concrete.

Description

technical field [0001] The invention relates to a method for simulating the mechanical properties of concrete materials by using a computer, in particular to a method for constructing a numerical simulation model of hydraulic asphalt concrete, a method for determining the optimal mix ratio of hydraulic asphalt concrete, and a method for evaluating the construction quality of hydraulic asphalt concrete . Background technique [0002] Hydraulic asphalt concrete is a mixture made by artificially selecting mineral aggregates with a certain gradation composition and a certain proportion of asphalt materials under strictly controlled conditions. It needs to meet the anti-seepage performance of hydraulic structures and at the same time It has sufficient modulus and strength to meet the deformation control and safety requirements of hydraulic structures. Based on good anti-seepage function, mechanical properties and competitive engineering cost, hydraulic asphalt concrete has been ...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 朱晟何咏睿武利强万连兵何顺宾邓石德
Owner HOHAI UNIV
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