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Post grouting system of Cast-in-place concrete piles and the post grouting method for increasing end bearing capacity at pile base
Post grouting system of Cast-in-place concrete piles and the post grouting method for increasing end bearing capacity at pile base
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机译：现浇混凝土桩后注浆系统及提高桩基端承力的后注浆方法
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摘要
The present invention provides a method for grouting the contact ground of the cast-in-place concrete pile tip in order to reinforce the tip bearing capacity of the cast-in-place concrete pile and to reduce the amount of settlement of the pile, and the cast-in-place pile used in the grouting method. For a tip post-grouting device.;The tip post grouting device of the present invention is attached to the cast-in-place reinforcing bar network and an even number of transfer pipes (consisting of inlet and outlet pipes) and packers, which transfer grout from the vicinity of the ground to the pile tip, and the L-shaped portion at the tip of the pile It is a structure consisting of a menjet tube connected to both ends of the inlet tube and the outlet tube by the connector.;The post grouting method for reinforcing the site bearing pile tip bearing capacity using the tip post grouting device is based on the construction procedure of a typical large diameter site casting concrete pile. Then, as the tip reinforcing grouting process through the pre-installed grout injection device is added, the bearing capacity of the pile tip ground can be strengthened to solve the problem of reducing the bearing capacity and increasing the settlement amount due to the weakening of the tip, and also simple measurement during the grouting process. It can serve as a simple pile static load test to verify the axial bearing capacity of the pile.;Cast-in-place concrete pile, tip post grouting, tip bearing capacity, menjet tube
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