Rectangular caisson lifting and launching device and method

Abstract

The invention discloses a rectangular caisson lifting and launching device and method, relates to the technical field of lifting and launching a whole caisson and in particular belongs to a whole undertaking lifting and launching technique of a rectangular caisson. The rectangular caisson lifting and launching device comprises an upper lifting rope (2), a clamping ring (3), steel protective angles (4) and a lower lifting rope (5), wherein one end of the upper lifting rope is suspended on double hooks (1) of a crane ship, the other end of the upper lifting rope is connected with the lower lifting rope through the clamping ring, the lower lifting rope undertakes the rectangular caisson through the steel protective angles, and the steel protective angles are clamped on inclined toe parts of the rectangular caisson. The rectangular caisson lifting and launching method comprises a rectangular caisson ground hooking step, a rectangular caisson undertaking step and integral lifting, an underwater automatic removing step and the like. The rectangular caisson ground hooking step is operated by constructors on the ground so as to avoid the danger of hooking in air; and the underwater automatic removing step of the steel protective angles and the rectangular caisson is automatically and integrally carried out underwater without human assistance. Therefore, the rectangular caisson lifting and launching device and method disclosed by the invention have the beneficial effects that the operation is simple, convenient, easy, safe and reliable; and the rectangular caisson lifting and launching device can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of overall hoisting and launching of caissons, in particular to a technology of integral hoisting and launching of a bottom of a rectangular caisson. Background technique [0002] At present, most of the methods for hoisting and launching prefabricated rectangular caissons in our country adopt the ceiling method and the hanging wall method. Usually, when the ceiling method and the wall hanging method are used, it is necessary to set up lifting rings, steel sleeves for lifting holes, hanging bars, and steel mesh above the lifting holes, etc. The non-recyclable lifting point strengthening device increases the construction cost and reduces the construction efficiency, and after the caisson is installed, the exposed lifting point strengthening device is exposed to water, which will corrode and damage the concrete around the lifting point; in addition, the use of suspended ceiling When using the method and hangin...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the methods for hoisting and launching prefabricated rectangular caissons in our country adopt the ceiling method and the hanging wall method. Usually, when the ceiling method and the wall hanging method are used, it is necessary to set up lifting rings, steel sleeves for lifting holes, hanging bars, and steel mesh above the lifting holes, etc. The non-recyclable lifting point strengthening device increases the construction cost and reduces the construction efficiency, and after the caisson is installed, the exposed lifting point strengthening device is exposed to water, which will corrode and damage the concrete around the lifting point; in addition, the use of suspended ceiling In the operation mode of the method and hanging wall method, the hooking process needs to be completed by the construction personnel with the high-altitude hook, and the decoupling process also needs manual assisted decoupling. In this way, there are many problems such as long time-consuming hooking and decoupling, cumbersome work, and great danger.

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