A method for constructing numerical simulation model of hydraulic asphalt concrete

Abstract

The invention discloses a method for constructing a hydraulic asphalt concrete numerical simulation model. The method comprises the following steps: step 1, making hydraulic asphalt concrete samples with the required mix ratio, and actually measuring the stress-strain curves of each hydraulic asphalt concrete sample; step 2, obtaining the hydraulic asphalt concrete sample internal mesoscopic structure, and establish the corresponding initial numerical simulation model of the hydraulic asphalt concrete sample according to the internal mesoscopic structure; step 3, take the stress-strain curve obtained in step 1 as the target, and use the optimal inversion method to adjust the initial numerical simulation The mesoscopic parameters of the model make the stress-strain curve calculated by the numerical simulation model coincide with the stress-strain curve obtained by the actual measurement, so that the numerical simulation model of hydraulic asphalt concrete under this mix ratio is obtained. The invention also discloses a method for determining the optimal mixing ratio of hydraulic asphalt concrete and a method for evaluating the construction quality of hydraulic 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 ...

AI Technical Summary

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 discrete; The mechanical properties of the core sample are too different from the test results of the laboratory sample preparation, which cannot accurately evaluate the mechanical properties of the in-situ asphalt concrete in the project, and it is difficult to fully control the construction quality on site

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