Intelligent mud jacking measurement and control system of large-circulation prestress pipeline

Abstract

The invention discloses an intelligent mud jacking measurement and control system of a large-circulation prestress pipeline, and the system comprises a slurrying system, a three-cylinder piston type grouting pump (24), a slurry feeding measurement and control apparatus, a slurry returning measurement and control apparatus and a computer (25). The intelligent mud jacking measurement and control system is characterized in that the three-cylinder piston type grouting pump (24) is connected with the slurrying system through a slurry sucking pipe (17), the slurry feeding measurement and control pipe is connected with the three-cylinder piston type grouting pump (24) through a slurry feeding pipe (18) and connected with the slurrying system through a slurry returning pipe (9), the terminal of the slurry feeding measurement and control apparatus is connected with a prestress pipeline (15), the inlet end of the slurry returning measurement and control apparatus is connected with the prestress pipeline (15), and the slurry returning measurement and control apparatus is connected with the slurrying system through a slurry returning pipe (20). According to the invention, automatic control is realized, the working intensity of workers is reduced, and the construction quality is improved.

Description

technical field [0001] The invention relates to an automatic control system for civil engineering construction, in particular to an intelligent grouting measurement and control system for large-cycle prestressed pipelines. Background technique [0002] Post-tensioned prestressed pipeline grouting construction is a key process that determines the durability and safety of the structure, while the traditional common grouting method is mainly completed by manual control, and the performance parameters of the grout and the technical parameters of the grouting process are controlled. It is relatively extensive and irregular, resulting in insufficient grouting of pipelines, causing early corrosion of steel strands, thereby affecting the service life of the structure, resulting in waste of resources and adverse social impacts. [0003] At present, the post-tensioned prestressed pipeline grouting construction in China mainly has the following shortcomings: [0004] A. The pressure i...

AI Technical Summary

Problems solved by technology

The pressure of traditional grouting is relatively random, and it cannot be adjusted adaptively according to the type, length and shape of the pipeline. Pressure is the key factor affecting the compaction of the grouting. failure related

[0005] B. The air in the channel cannot be completely exhausted

Ordinary grouting methods cannot effectively remove the air in the pipeline, especially for prestressed pipelines in the negative bending moment section, the highest point of the inflection point often has voids left by grouting because the air cannot be exhausted

[0006] C. The water-binder ratio cannot be accurately controlled

The water-binder ratio is the main performance parameter of the grout. Ordinary grouting does not strictly control the water-binder ratio. The site often increases the water consumption to improve the flow performance, which eventually leads to an excessive bleeding rate, forming voids in the pipeline and exuding free water. , to accelerate the corrosion of the steel strand

[0007] D. Low credibility of grouting records

Traditional ordinary grouting is manually recorded, and grouting is a hidden project. With the completion of grouting, it is no longer possible to accurately trace the quality with existing technical means

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