Construction method of conical pile and tip pipe pile with post-grouting

Abstract

The invention relates to the technical field of pipe pile construction, and discloses a post-grouting conical pile tip pipe pile construction method, which includes the following construction steps: firstly determine the construction position of the pipe pile body according to the design drawing, lay out the axis sample, and make a mark , adjust the positions of the pile hammer, pile frame, and pile cap to ensure that the pile hammer strikes the pipe pile body vertically, then use the pile machine's own crane to lift the pipe pile body, insert the pipe pile body into the center of the pile position, Adjust the positions of the pipe pile body, pile hammer, and pile cap again so that the pipe pile body is always vertical. After the last pipe pile body is driven to the ground level, the pile is sent. After the pile is sent, the grouting is performed. When the grout covers the grouting hole, the grout enters the grouting hole, and as the grout increases, the The grout is extruded from the other end of the grouting hole to fix the pipe pile body with the external soil layer and increase the bearing capacity of the pipe pile.

Description

technical field [0001] The invention relates to the technical field of pipe pile construction, in particular to a construction method of a conical pile tip pipe pile capable of post-grouting. Background technique [0002] Through years of practice, prestressed concrete pipe piles have been widely used in building foundations due to their advantages of quick and convenient construction, stable and reliable quality, and good durability; however, many problems have also been found during the construction process, such as prestressed concrete pipe piles It is one of many problems that it is difficult for piles to pass through dense sandy soil to obtain greater bearing capacity. Conventional methods to solve this problem include: pre-drilling pilot holes, using bored piles for construction, etc., but the above methods have a long construction period and cost high. [0003] In the prior art, sometimes clever use of prestressed pipe pile tips can achieve good results, and the cons...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a post-grouting conical pile pointed pipe pile construction method, aiming to solve the problem in the prior art that the pipe pile cannot meet the larger bearing capacity due to the insufficient depth of pipe pile embedding for the hard bottom layer

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