Rapidly-formed expansion steel pipe pile and construction method thereof

Abstract

The invention discloses a rapidly-formed expansion steel pipe pile and a construction method thereof. The rapidly-formed expansion steel pipe pile comprises an outer steel pipe with an expansion anchor claw, and an inner steel pipe with a wedge-shaped bottom end. The expansion anchor claw is firstly fixed in the outer steel pipe, and after the outer steel pipe is lowered to a hole well, the innersteel pipe is inserted into the outer steel pipe through a steel rope and a winch; in the insertion process, the wedge-shaped bottom end of the inner steel pipe extrudes the expansion anchor claw andpushes the expansion anchor claw out of the outer steel pipe; and the expansion anchor claw is wedged into soil around a pile body, so that the bearing capacity of a pile foundation is provided. The rapidly-formed expansion steel pipe pile has the advantages of short pile forming period, no vibration and low noise on the construction site, no environmental pollution, simple construction equipment,standardization design, batch production and assembly construction, is widely applicable to various civil engineering such as buildings and bridges, and has positive significance for meeting the current urban construction requirements and promoting industrial innovation and development.

Description

technical field [0001] The invention belongs to the technical field of pile foundations, and in particular relates to a steel pipe pile capable of rapid pile formation, and a steel pipe pile and a construction method thereof which utilize pile body expansion and anchor claws to be wedged into soil to obtain bearing capacity. Background technique [0002] Since the beginning of the 21st century, the process of urbanization and motorization in China has been accelerating, and the rapid growth of population, vehicles, and buildings has continued to compress urban space, causing more and more serious traffic congestion problems. At the same time, the environmental problems brought about by urbanization are becoming increasingly prominent. Under such circumstances, the traditional civil construction methods, which have a long construction period, occupy a large area, rely on the handicraft production mode, and easily cause traffic congestion and environmental pollution, are incre...

AI Technical Summary

Problems solved by technology

Cast-in-situ piles have no vibration and low noise during construction, and are suitable for use in urban areas with dense population and buildings. However, they are highly dependent on on-site wet work, the construction process is cumbersome, the pile-forming period is long, and the quality of poured concrete is unstable. and other problems, it is difficult to meet the needs of construction industrialization

Sinking piles can be produced on a large scale, and piles can be quickly formed, which has certain industrial characteristics. However, problems such as vibration, noise, and pollution caused by pile sinking operations restrict its application in urban areas.

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