Construction process of vibrating and sinking of steel cylinder through vibration hammer in linkage mode

Abstract

The invention provides a construction process of vibrating and sinking of a steel cylinder through a vibration hammer in a linkage mode. The construction process comprises the specific steps that a foundation trench is excavated; the steel cylinder is made and transported; hard stratum needing to be treated is treated through a DMS foundation treatment method; and the steel cylinder is vibrated and sunken. The soil mass property of an original natural foundation can be changed, the hard stratum is broken, the driving resistance of the steel cylinder or a similar foundation structure object is reduced, nonuniform stress in the driving process is reduced, and driveability is improved. According to the construction process, the complex foundation can be treated, limitation of geological conditions is avoided, and the using range of the steel cylinder or the similar foundation structure object can be widened. According to the vibrating and sinking process, the vibration hammer is used for linkage, timely monitoring and rectifying are achieved, efficiency is high, and the vibrating and sinking process is scientific and reliable .

Description

technical field [0001] The invention relates to the field of vibratory sinking construction of steel cylinders, in particular to a construction technique for vibrating and sinking steel cylinders linked by vibrating hammers. Background technique [0002] The large-diameter steel cylinder is an important cofferdam structure for constructing artificial islands at sea. During the project, steel cylinders need to be inserted tens of meters below the seabed foundation. In the current process of laying large-diameter steel cylinders, due to the uneven soil quality of the foundation and the existence of hard soil layers with sand, the steel cylinders are prone to uneven force, stress concentration, and structural deformation during the sinking process, resulting in steel The cylinder drilling progress is slow, the positioning is inaccurate, and the operation efficiency is low, which further affects the construction progress. For the foundation with a thick sand layer in some place...

AI Technical Summary

Problems solved by technology

In the current process of laying large-diameter steel cylinders, due to the uneven soil quality of the foundation and the existence of hard soil layers with sand, the steel cylinders are prone to uneven force, stress concentration, and structural deformation during the sinking process, resulting in steel The cylinder drilling progress is slow, the positioning is inaccurate, and the operation efficiency is low, which further affects the construction progress. For the foundation with a thick sand layer in some positions, there will also be a phenomenon of shutdown due to insufficient vibration force for drilling and setting.

Furthermore, the vibratory hammer vibrating and sinking process of the steel cylinder that exists today is relatively simple and cannot form a self-contained system. The vibration and sinking process is immature and the vibration and sinking effect is not good.

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