Grouting device and grouting method

Abstract

The invention provides a grouting device which is high in construction speed, simple in structure, convenient to operate, high in efficiency and economical and a corresponding grouting method. The grouting device is characterized by being matched with a prefabricated pipe pile, and the grouting device carries out grouting after the prefabricated pipe pile is put into a pile hole with a larger diameter; the grouting device comprises an end plate which is used for sealing the bottom end of the prefabricated pipe pile, a grouting cushion chamber which is arranged in the end plate and is hollow inside, a grouting pipe, a plurality of grout outlet pipes, a plurality of reversing grout stopping valves and a plurality of end caps, wherein a grouting opening is formed in the upper end of the grouting pipe, and the lower end of the grouting pipe communicates with the grouting cushion chamber; the multiple grout outlet pipes are evenly arranged on the periphery of the grouting cushion chamber, a grout inlet of each grout outlet pipe communicates with the grouting cushion chamber, grout outlets can penetrate reserved holes in the side wall of the prefabricated pipe pile and face the space to be grouted on the outer side of the prefabricated pipe pile; the multiple reversing grout stopping valves are arranged on the grout outlet pipes correspondingly and stop grout from reversely flowing in the direction from the grout outlets to the grout inlets; and the multiple end caps block the grout outlets.

Description

technical field

[0001] The invention belongs to the technical field of building pile foundation engineering construction, and in particular relates to a grouting device and a corresponding grouting method. Background technique

[0002] The pile foundation of transmission line pole and tower is not only required to bear vertical pressure, but also to bear horizontal load and uplift load caused by factors such as tower line and wind. The requirements for horizontal bearing capacity and uplift bearing capacity of single pile foundation are relatively high.

[0003] When the bored pile needs to be constructed, the hole is usually drilled first, then the steel cage is placed in the pile hole, and the pile body concrete is poured at last; large-scale drilling machinery, steel cage lifting equipment and concrete mixer are required, the construction period is long, and the pile body concrete Quality cannot be guaranteed. If prefabricated pipe piles are used as the foundation of tra...

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