Concrete super-high pumping simulation verification apparatus and method

Abstract

The invention provides a concrete super-high pumping simulation verification apparatus and method, belongs to the technical field of concrete super-high pumping, and is intended to verify the precision of a concrete super-high pumping simulation model. The apparatus comprises a test pipe connected to the tail end of a concrete pump pipe via flange butting, and also comprises a rotary blade wheel system perpendicularly mounted on the inner wall of the test pipe; the rotary blade wheel system includes rotary blades and a rotary shaft mating with the same; the other end of the rotary shaft is provided with a measurement control system; the measurement control system measures rotational velocity of the rotary blades; concrete plastic viscosity and yielding stress can be calculated according toa set fitting formula. Therefore, the apparatus herein is capable of measuring rheological parameters of concrete during concrete pumping conveniently and simply with no need for setting devices on apump pipe, such as a pressure sensor, and without damaging the safety of the pump pipe.

Description

technical field [0001] The invention relates to the technical field of super-high concrete pumping, in particular to a simulation verification device and method for super-high concrete pumping. Background technique [0002] Some people in China have already started research on concrete superelevation pumping through numerical simulation method. Based on the rheology of concrete, this method studies key parameters such as the flow state and pressure loss of concrete during the pumping process through numerical methods such as computational fluid dynamics or discrete elements, which is conducive to the control of super-high concrete pumping construction from traditional experience. The method has changed to a scientific and quantitative control method, thus laying the foundation for realizing the digital construction of concrete super-high pumping. However, there is no good method for how to verify the simulation results of concrete superelevation pumping. [0003] Most of t...

AI Technical Summary

Problems solved by technology

The laboratory verification method is mainly aimed at the flow behavior of concrete under gravity, which is quite different from the state of concrete pumping (the flow of concrete under pressure), and its scale and scale cannot be compared with pumping.

Although the ground coil method adopts the pumping method, it does not consider the influence of gravity. Whether the result of horizontal pumping can reflect the state of vertical pumping is still open to question.

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