Calculation method and system for numerical simulation of rockfill concrete pouring process

Abstract

The embodiment of the invention provides a calculation method and system for numerical simulation of a rockfill concrete pouring process. The calculation method comprises the following steps: according to a finite element / discrete element coupling analysis method FEM / DEM, calculating and analyzing a stacking process and a final stacking form of a three-dimensional model of an initial state of a rockfill block; after calculating and analyzing the packing process and final packing state of the initial state three-dimensional model of rockfill, calculating and analyzing the pouring process and final filling state of self-compacting concrete in the final packing state of rockfill based on the SPH method. The method and the system provided by an embodiment of the present invention can accurately simulate the pouring process of self-compacting concrete, and not only can the flow state of self-compacting concrete in rockfill pores be observed directly, but also the final compaction state ofrockfill concrete can be known, which saves a lot of manpower cost, experiment cost and economic cost, and avoids the difficult problem that the experiment method is difficult to observe on-line.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of rockfill concrete pouring, and more specifically, to a calculation method and system for numerical simulation of a rockfill concrete pouring process. Background technique [0002] Mass concrete occupies an important position in modern engineering construction, especially in water conservancy and hydropower engineering construction. More than 10 million cubic meters of large-volume concrete is poured in water conservancy and hydropower projects in my country every year. In addition, large-volume concrete is often used in ports, airport buildings, and heavy machine foundations. Rockfill concrete reduces the amount of cement by using a large number of rocks (particle size greater than 30cm), thereby effectively reducing the heat of hydration and reducing CO 2 Discharge, has the characteristics of small shrinkage of concrete structure, improved crack resistance and shear resistance, fas...

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Problems solved by technology

[0003] During the construction of rock-fill concrete, the accumulation process and final accumulation form of the rock-fill concrete have a great influence on the mechanical properties of the formed rock-fill concrete. However, due to the high cost of the experiment and the shape of the rock-fill body in the actual project The pattern is complex, so it is difficult to carry out more accurate experiments to analyze the actual project, so it is an inevitable trend to carry out numerical calculation methods to analyze and calculate the accumulation process of rockfill concrete rockfill bodies

But so far, how to accurately simulate and calculate the pouring construction process of rockfill concrete, there are no achievements and methods for reference

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