Prestressed mud jacking trolley and circulating mud jacking method

Abstract

The invention provides a prestressed mud jacking trolley and a circulating mud jacking method. The prestressed mud jacking trolley comprises a mortar pump, a high-speed pulping machine, a low-speed pulp storage barrel, a water-binder ratio test instrument, a pressure sensor, an electromagnetic flow-meter, a pulp inlet-overflow valve, a pulp return valve, a pressure regulating valve and a computer, wherein the low-speed pulp storage barrel is connected with the water-binder ratio test instrument, and is connected with the mortar pump through a pulp suction pipe; the mortar pump is connected with a prestressed pipeline of a constructed object through a pulp inlet pipe; the prestressed pipeline is connected with the low-speed pulp storage barrel through a pulp return pipe; the pressure sensor, the electromagnetic flow-meter, the pulp inlet-overflow valve, the pulp return valve and the pressure regulating valve are arranged on the pulp inlet pipe and the pulp return pipe; and the computer receives measurement data and controls the power-on and power-off of the pulp inlet-overflow valve, the pulp return valve and the pressure regulating valve through signals. The prestressed mud jacking trolley and the circulating mud jacking method have the advantages as follows: the prestressed mud jacking trolley achieves high integration and is convenient to use; the mud jacking pressure and the pulp performance can be controlled accurately; the pulp amount can be metered accurately; and the technical problem that the mud jacking in the prestressed pipeline is not full and not compact can be solved by exhausting air in the pipeline in a circulating manner.

Description

technical field [0001] The invention relates to the technical field of grouting in bridge construction, in particular to a prestressed intelligent grouting trolley and a circulating grouting method. Background technique [0002] During bridge construction, the quality of prestressed grouting construction is crucial to the safety and durability of prestressed bridges. Therefore, post-tensioning prestressed pipeline grouting construction has become a key process in prestressed bridge construction. [0003] At present, the most widely used traditional grouting method in the field of prestressed bridge construction consists of grouting barrels, single-cylinder pumps, grouting nozzles, connecting pipelines and other components. The implementation methods are as follows: [0004] ①: Cement, grouting agent and water are all poured into the slurry tank and stirred into cement slurry; [0005] ②: Connect the pulping barrel-single-cylinder pump, single-cylinder pump-squeezing nozzle,...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a prestressed intelligent grouting trolley and a circulating grouting method to solve the above-mentioned technical problem that the grouting of the prestressed pipeline is not dense

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