A treatment method for grout running out of prefabricated piles planted in crushed stone layers

Abstract

The invention discloses a grout runout treatment method for planting of a precast pile in a rubble layer. Through the grout runout treatment method, the grout runout problem occurring to the precast pile in the rubble layer is solved. A protective barrel is used during hole forming, thus stratum stability during hole forming is ensured, hole collapse is not liable to occur, after poured grout is poured in, conditions can be provided for initial setting time of the grout, and the effect that before initial setting of the grout, the rubble layer containing water does not collapse towards the inside of the hole is ensured. According to the technical scheme of the grout runout treatment method, the grout runout treatment method comprises the following steps that the precast pile is made and is transported to a pile planting site; the hole position of the precast pile is determined, the precast pile is put into the pile hole after drilling, and the protective barrel is put in the pile hole; the poured grout is made with a set ratio, and the grout is poured into the pile hole from bottom to top; the protective barrel is clamped by a vibration hammer to be matched with a crawler crane and is taken out, and grouting is completed; after grout is solidified for the set time, coring observation is conducted on the grout, and whether the grout runs off is judged; and if yes, holes are formed in the two sides of the pile hole, grout is sprayed, and the grout is reinforced.

Description

Technical field [0001] The invention relates to the fields of foundation engineering and foundation pit engineering, and in particular to a method for mortar-running treatment of precast piles planted in gravel layers. Background technique [0002] At present, in the construction of foundation pit engineering, the structural form of bored piles or ground connecting walls is commonly used in the enclosure structure, but the quality of the piles or ground connecting walls of the cast-in-place structure is easily affected when the ground is poor. And the pile formation speed is slow. [0003] The use of prefabricated piles in conjunction with pile delivery, pile planting and slurry transportation equipment to complete the construction of the enclosure structure can avoid the construction quality problems of traditional cast-in-place piles, increase the construction speed, shorten the construction period, reduce the project cost, and help realize the project Green production. [0004] ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a treatment method for grout leakage of prefabricated piles planted in gravel layers, which solves the problem of cement-soil grout leakage in water-bearing gravel formations

Images