Device for removing barrier pile and operation method

Abstract

The invention discloses a device for removing a barrier pile and an operation method. The method for removing the barrier pile comprises the barrier pile, a jack, a pile feeder and a reaction frame. The barrier pile is a pile foundation affecting a subway tunnel shield and penetrates through a subway tunnel. The pile feeder is mounted on the top surface of the barrier pile. The section shape of the pile feeder is the same as the section shape of the barrier pile. The pile feeder is formed by a plurality of sections, and all the sections of the pile feeder are connected through flanges. The jack is mounted at the top end of the pile feeder. The reaction frame is mounted on the jack and is anchored on a ground beam of a building. According to the device, the barrier pile is pressed into a position, where the shield is not affected, of the bottom of the tunnel to remove construction barriers for a shield tunneling machine; the barrier pile is pressed into the position, where the shield isnot affected, of the bottom of the subway tunnel through the reaction frame and the pile feeder with the self gravity of the building as the counterforce, and finally, the pile feeder is taken out and a hole is sealed with soil. The device has the advantages that the construction period is short, the cost is low, the ambient environment is slightly affected, and the construction difficult is low.

Description

technical field [0001] The invention relates to the field of subway tunnel construction, in particular to a device and an operation method for removing obstacle piles when a subway tunnel passes through old building pile foundations. Background technique [0002] In recent years, many cities in China are building subway projects. The line selection of subway lines often passes through the downtown area and passes through existing buildings, and for buildings with pile foundations, there is also the problem of clearing obstacle piles. Because these obstacle piles are mostly reinforced concrete prefabricated piles, it is very difficult for the shield machine to pass through. Therefore, in actual projects, the shield tunneling is often performed after removing the obstacle piles. Therefore, there is a huge potential for the development of obstacle removal pile technology in my country. It is particularly important to conduct integrated research on the existing key technologie...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of obstacle piles encountered in the shield tunneling of subway tunnels, and provide a device and operation method for removing obstacle piles, which have the advantages of short construction period, low cost, little influence on the surrounding environment, and low construction difficulty.

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