Typical geology PHC pipe pile construction method

Abstract

The invention relates to a typical geology PHC pipe pile construction method. The method includes the following steps: (1) matching piles, according to typical geological exploration data, selecting afirst joint of pipe pile and a second joint of pipe pile; (2) first time of piling, firstly, causing the bottom end of the first joint of pipe pile to evenly press natural ground so that the first joint of pipe pile is struck to a bearing stratum of typical geology; (3) pile splicing, welding the second joint of pipe pile together with the first joint of pipe pile after an interval of over 8h; (4) second time of piling, which is carried out immediately after pile splicing until the second joint of pipe pile is caused to even the natural ground; and (5) pile following. Therefore, the method conducts second time of piling / pressing pipe piles after the generated soil stress is completely vanished, in a time interval after the first time of piling / pressing piles, and can effectively strike and press the pipe piles into the bearing stratum of typical geology, thus solving the problems of the prior art. The method is simple and convenient for operation.

Description

technical field [0001] The invention relates to a PHC pipe pile (prestressed concrete pipe pile) construction method, in particular to a PHC pipe pile construction method under typical geological conditions (referring to soil / rock layers with little compressibility). Background technique [0002] With the rapid development of modern cities, there are more and more high-rise buildings. However, in the construction of foundation buildings, PHC pipe piles are widely used because of their high single pile bearing capacity, good hammer resistance and low cost. However, when the pipe pile is constructed under typical geological conditions, it is difficult for the PHC pipe pile to reach the ideal bearing layer depth during the continuous hammering process of the PHC pipe pile with a pile driver, and some even cannot be driven / pressed at all. If it enters the bearing layer or causes the pipe pile to be cracked or exploded, it will seriously affect the quality of the project, bring t...

AI Technical Summary

Problems solved by technology

However, when the pipe pile is constructed under typical geological conditions, it is difficult for the PHC pipe pile to reach the ideal bearing layer depth during the continuous hammering process of the PHC pipe pile with a pile driver, and some even cannot be driven / pressed at all. into the bearing layer or cause the pipe pile to be cracked or exploded, which seriously affects the quality of the project, brings troubles to the construction, and is not conducive to the promotion of construction