Construction method of fast demolition of locking steel cofferdam by means of water head difference in sea

Abstract

The invention discloses a construction method for quickly demounting anchored steel cofferdam by skillfully adopting water head difference in the sea. The construction method includes skillfully utilizing natural phenomenon of oceanic tide rising and falling, damaging binding force between the cofferdam and bottom sealing concrete by the pressure difference generated by water head difference inside and outside the cofferdam so as to separate the cofferdam from the bottom sealing concrete; pulling out and craning the whole cofferdam by a craning ship to the next pier for next construction. Therefore, the construction method has the advantages that construction procedures are simple and easy to operate; large jacking or underwater equipment is omitted, cost and investment are kept low; efficiency, quickness and safety are achieved at the same time; by the aid of natural resources, the construction method is energy saving and environment friendly.

Description

technical field [0001] The invention relates to a bridge engineering construction method, in particular to a construction method for quickly removing a lock steel cofferdam by means of a water head difference in the sea. Background technique [0002] In recent years, sea-crossing bridges in coastal cities have developed rapidly. Underwater bridge construction and underwater foundation construction must be completed with the help of temporary facilities, and temporary facilities are frequently used or after the foundation construction is completed, the temporary facilities have to be dismantled and restored to their original appearance. How to safely and smoothly complete the underwater foundation construction in a complex marine environment and how to quickly, energy-saving, and environmentally friendly complete the demolition and reuse of temporary facilities has become an important and difficult point in bridge construction. [0003] As a temporary facility for bridge foun...

AI Technical Summary

Problems solved by technology

This dismantling method has the following disadvantages: 1. It takes a long time to dismantle a single block; 2. It takes a long time to reassemble after dismantling a single block; 3. It takes a large vibrating hammer to dismantle, which is costly; 4. Vibration The hammer is not only noisy, but also there is oil leakage when the equipment is abnormal, which will pollute the environment

Therefore, considering factors such as high efficiency, safety, economy, and environmental protection, it is not the best choice to use a vibratory hammer for single-block removal.

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