Method for building numerical simulation model of hydraulic engineering asphalt concrete

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 ...

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

Images