Sinking leveling and reinforcing method for caisson

Abstract

The invention discloses a sinking leveling and reinforcing method for a caisson. The sinking leveling and reinforcing method for the caisson includes the following steps that (1) after the caisson is towed to a sinking point according to an air floatation method, the caisson sinks, a plurality of transverse apron boards and a plurality of longitudinal apron boards are arranged at a bottom board of the caisson and are intercrossed to form a plurality of cabins, and towing and sinking of the caisson are achieved by inflating and deflating the cabins; (2) the caisson is ballasted, the longitudinal apron boards and the transverse apron boards are inserted to mud on the seabed, and the cabins are filled with sea water; (3) the sea water in the cabins is pumped, so that the bottom board of the caisson sinks to the mud on the seabed, and the cabins are grouted for reinforcement. The apron boards are arranged at the bottom of the caisson to form the cabins, the sinking posture of the caisson is adjusted rapidly by adjusting the gas contents in the different cabins in the sinking process, and after the caisson sinks, grouting is carried out through a valve to reinforce a foundation. The controllability of the caisson is improved in the sinking process, and the sinking safety and stability of the foundation of the caisson are improved effectively.

Description

technical field [0001] The invention relates to a caisson sinking, leveling and reinforcing method, which belongs to the field of offshore oil and gas storage. Background technique [0002] Caisson foundations are widely used in marine engineering such as ports, wharves, and breakwaters. A caisson in marine engineering is similar to a box with a closed bottom and an open top. The caissons in traditional marine engineering are generally manufactured on the shore or in the dock, and then floated in place, filled with water and filled to sink, so that they can sink smoothly to the leveled foundation or riprap foundation bed. If the soil quality in the lower part of the foundation is poor, the soil will have a certain degree of uneven consolidation and settlement after the caisson is placed, which will easily cause the inclination of the caisson, and it is difficult to level the caisson foundation after inclination, and the sinking process is difficult to control. If the opera...

AI Technical Summary

Problems solved by technology

If the soil quality in the lower part of the foundation is poor, the soil will have a certain degree of uneven consolidation and settlement after the caisson is placed, which will easily cause the inclination of the caisson, and it is difficult to level after the caisson foundation is inclined, and the sinking process is difficult to control

If the operation is not done properly during the sinking process, it is likely to cause the caisson foundation to tilt and cause local damage, which is extremely detrimental to the safety and stability of the foundation.

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