Grouting device and method for prefabricated concrete pile hole

Abstract

The invention discloses a grouting device for a prefabricated concrete pile hole. The grouting device is characterized by comprising at least two grouting hoses, a hose storing and releasing device, a high-pressure grouting device body and an annular grouting head; the high-pressure grouting device body is provided with the high-pressure grouting head communicating with the interiors of pipe cavities of the grouting hoses; one end of each grouting hose is fixedly connected with the hose storing and releasing device, each grouting hose is arranged on the hose storing and releasing device in a stored and released manner, and the other end of each grouting hose is fixedly connected to the annular grouting head; the annular grouting head is provided with bottom grout inlets corresponding to the grouting hoses, annular grouting grooves formed in the annular grouting head, and a plurality of bottom grout outlets annularly distributed in the side lower portion of the annular grouting head; and the interiors of the pipe cavities of the grouting hoses communicate with the annular grouting grooves through the bottom grout inlets, and the annular grouting grooves communicate with the outer portion through the bottom grout outlets. The invention further discloses a grouting method utilizing the grouting device. The grouting device and method have the beneficial effects that energy is saved, environment friendliness is achieved, and the construction process is rapid and convenient.

Description

technical field [0001] The invention relates to a pile hole grouting device and a grouting method, in particular to a grouting device and a grouting method for a prefabricated concrete pile hole. Background technique [0002] Prefabricated concrete piles have a long history of application, and have a high degree of end resistance and side resistance after pile formation. They are strong and durable, fast in construction speed, and their bearing capacity to cost ratio is greater than other pile types. [0003] So far, the construction methods of prefabricated concrete piles have basically adopted hammering method and static pressure method. The main defects of these two methods of pile sinking are: to produce a soil squeezing effect, which will affect the engineering pile and the surrounding original facilities; The elevation is difficult to control, and the integrity of the pile body cannot be guaranteed; the vibration and noise generated by the hammering method will affect ...

AI Technical Summary

Problems solved by technology

[0003] So far, the construction methods of prefabricated concrete piles have basically adopted hammering method and static pressure method. The main defects of these two methods of pile sinking are: to produce a soil squeezing effect, which will affect the engineering pile and the surrounding original facilities; The elevation is difficult to control, and the integrity of the pile body cannot be guaranteed; the vibration and noise generated by the hammering method will affect the surrounding environment. Therefore, there are many disadvantages in the pile sinking construction using the hammering method or static pressure method

However, this method needs to pour cement slurry into the mud hole to form a mixed slurry before sinking the pile. The discharge volume of the mixed slurry is the actual volume of the prefabricated concrete pile or concrete pipe pile, and the discharged mixed slurry contains cement slurry, resulting in waste, while affecting the environment, and the overall construction progress is slow

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