Novel lining device of cast-in-place large-diameter pipe pile and pipe pile construction method

Abstract

The invention discloses a novel lining device of a cast-in-place large-diameter pipe pile and a pipe pile construction method. The novel lining device comprises a lining pipe formed by splicing two lining steel molds, a guide pipe extending in the same direction is slidably connected to the outer side wall of the lining pipe, the guide pipe is pulled up along with the liquid level height of concrete in the pouring process, and a cross support is arranged in the lining pipe. The two lining steel molds are detachably and fixedly connected through the cross support, the bottom end of the lining pipe is fixedly connected with a pile bottom sealing formwork, the pile bottom sealing formwork is disconnected with the lining pipe and is taken out when recycled, before pouring, the outer wall of the lining pipe is coated with a release agent and a reinforcement cage sleeves the outer wall of the lining pipe, and the lower end of the guide pipe extends to the bottom end of the lining pipe. The strength of the pipe pile is guaranteed, meanwhile, material recycling is achieved to the maximum extent, and the manufacturing cost is effectively saved.

Description

technical field [0001] The invention relates to a novel lining device for cast-in-situ large-diameter pipe piles and a construction method for the pipe piles. Background technique [0002] The Yangtze River Delta region and the Yangtze River Basin have wide distribution of soft soil, poor geological conditions, distinct seasons, and dense second- and third-tier cities. The characteristics of foundation pits in these areas are: the second-floor basement, soft soil is widely distributed, but the thickness is not too large. How to find a The support form that can not only ensure the safety of the foundation pit but also save the cost is the key problem that the industry needs to solve urgently. At present, the cast-in-place construction of large-diameter foundation pit support pipe piles can not only save the cost, but also ensure a certain strength of the pipe piles. It is also more convenient to implement, and it is a support form close to the requirements. However, it is di...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of lining device for cast-in-situ large-diameter pipe piles and a construction method for pipe piles, so as to solve the problem of inability to effectively recycle construction in the prior art under the premise that steel cages are installed in pipe piles to improve structural strength. The non-pipe pile materials used lead to the waste of some materials and cannot further save the technical problem of cost

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