Pile-forming construction equipment for composite foundation piles

Abstract

Pile-forming construction equipment for composite foundation piles comprises a base plate and a pile frame. The pile frame is arranged in the middle of the base plate and perpendicular to the base plate. A hammer is suspended at the centre point of the pile frame. A steel cable connected with the suspended hammer is connected with a hoist through a pulley on a top beam of the pile frame and a pulley mounted on the base plate. The hammer and a shield casing are disposed in the core of the base plate, and the hammer is suspended in the shield casing to do up and down movement such as lifting or falling repeatedly. The shield casing is arranged between two main hydraulic devices; bottom ends and top ends of the two main hydraulic devices are respectively hinged to a steel beam of the base plate and a side-grip clamp, thus the shield casing is pressed or lifted through repeated clamping or releasing of a collar clamp. The base plate is supported on the ground through a travelling support plate or four hydraulic supporting legs arranged below. Besides, the two hydraulic devices are respectively vertically arranged on two sides of the shield casing, and the side-grip clamp is a ring-shaped component which sleeves the shield casing. The pile-forming construction equipment has high controllability and operability, is light and has low requirement for construction sites.

Description

technical field [0001] The invention relates to the field of foundation treatment in geotechnical engineering, in particular to a pile-forming construction equipment for composite foundation piles with loose piles as reinforcements on different soft soil layers. Background technique [0002] Generally speaking, when building fixed facilities or structures on different soft soil foundations, corresponding foundation treatment plans must be provided to prevent quality accidents caused by deformation and collapse of the foundation. In order to improve the bearing capacity of the foundation, people often use the construction method of composite foundation piles. At present, in view of the above-mentioned construction schemes, some of the commonly used pile-forming construction equipment for composite foundation piles use prestressed tubular pile static pile drivers. The construction speed of this equipment is relatively fast. The requirements are very high. During the construct...

AI Technical Summary

Problems solved by technology

At present, in view of the above-mentioned construction schemes, some of the commonly used pile-forming construction equipment for composite foundation piles use prestressed tubular pile static pile drivers. The construction speed of this equipment is relatively fast. The requirements are very high. During the construction process, pile breakage or pile tip displacement often occur; some use hammer-type diesel pile drivers, which are noisy. Due to the concentrated stress at the pile head of the prestressed pipe pile, the pile head is often damaged. , pile body cracking and other phenomena, which greatly reduce the bearing capacity of single piles; The technology is limited, the construction period is long, water and electricity resources are consumed, and mud is discharged to pollute the environment, etc.; Feeding starts after the design elevation. Since there is only one feeding port on the immersed tube, the feeding hopper can only be lifted by the hoist, and then the tube is pulled out by vibration while filling, and the gravel is shaken compactly. The noise is high, the packing density is insufficient through vibration, the material is single, the replacement rate is not high, the replacement depth is small, and the pile diameter is not large

[0003] Therefore, when it is necessary to deal with different weak formations, there are many technical problems that are difficult to overcome in the above-mentioned commonly used construction equipment.

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