High-bearing-capacity sand filling pipe pile with pile joints and manufacturing and construction method of pile

Abstract

The invention discloses a high-bearing-capacity sand filling pipe pile with pile joints, which is characterized in that the pile joints 0.5-20 cm larger than a pile body are arranged on the pile body of the pipe pile at intervals of 0.3-4 m; the width of each pile joint is 0.5-20 cm; longitudinal drainage holes are formed in the pile joints; filled sand or gravel about 0.5-20 cm thick is arranged outside the pile body; a pipe pile part or a precast pile capable of entering a harder supporting layer is arranged at the lower part of the pile body; and a pile tip is a steel pile tip or a reinforced concrete pile tip with a steel sharp corner. Compared with the prior art, stress water in a soil layer caused by piling can be drained economically, effectively and more quickly along the filled sand or the gravel at the periphery of the pile; mucky soil solidification can be accelerated; side friction resistance of soil at the periphery of the pile can be increased; the pipe pile part or the precast pile at the lower end of the pile can be punctured into the harder supporting layer to increase end bearing force; and the pile is applicable to coastal reclamation regions of China.

Description

technical field [0001] The invention relates to the field of building foundations, in particular to a sand-filled tubular pile with pile sections with high bearing capacity and a manufacturing and construction method thereof. Background technique [0002] In my country's coastal cities, soft soil foundations are widely distributed, especially land reclamation, and the water content of silt or flowing mud (ω 0 )70-94, and poor water permeability. To build dock yards, highways, factory buildings, and multi-storey buildings on this type of foundation soil, the foundation must be treated. At present, the sand piles, gravel piles, cement mixing piles, powder spray piles, rotary spray piles, plastic inserts and vacuum preloading used in foundation treatment have the disadvantage that the post-construction settlement can reach tens of centimeters to one or two meters , causing a lot of inconvenience to users. The use of pile foundation designs such as pipe piles, sinking piles, ...

AI Technical Summary

Problems solved by technology

At present, the sand piles, gravel piles, cement mixing piles, powder spray piles, rotary spray piles, plastic inserts and vacuum preloading used in foundation treatment have the disadvantage that the post-construction settlement can reach tens of centimeters to one or two meters , causing a lot of inconvenience to users

The use of pile foundation designs such as pipe piles, sinking piles, and prefabricated piles is costly. Second, the stress water pressure in the silt caused by piling increases and cannot be discharged, causing the ground to bulge and wrap the driven piles. Tens of centimeters, reduce the bearing capacity, resulting in displacement of the pile body, until the pile breaks

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