Method and device for integral river entering of high narrow steel cofferdam and fully-enclosed supporting bracket

Abstract

The invention discloses a method and device for integral river entering of a high narrow steel cofferdam and a fully-enclosed supporting bracket, and relates to the field of bridge construction. The fully-enclosed supporting bracket comprises a bottom supporting plate and a supporting frame, wherein an airbag is arranged below the bottom supporting plate, the bottom supporting plate is in detachable connection with the high narrow steel cofferdam, and the bottom supporting plate is arranged to be matched with the bottom of the high narrow steel cofferdam in a sealed mode; and the supporting frame is arranged on the bottom supporting plate and comprises a plurality of steel beams which are horizontally arranged and connected in a vertically staggered mode, the two ends of each steel beam are provided with blocking blocks, and each steel beam tightly abuts against the high narrow steel cofferdam through the corresponding blocking block. According to the method for integral river enteringof the high narrow steel cofferdam, the fully-enclosed supporting bracket and a cofferdam structure jointly form a floating body with high rigidity to resist impact overturning during river entering,so that the floating body integrally enters a river, there is no need to arrange a river entering sliding channel and a bottom partition bin structure to assist river entering and floating, and requirements of rapid construction are met.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a method, a device and a fully enclosed bracket for a high-narrow steel cofferdam to go down a river as a whole. Background technique [0002] The air bag method is the most common and economical method in the river construction of existing ships and large bridge engineering water foundations, but it is only suitable for double-walled steel cofferdams and ships with an aspect ratio of less than 1. For a high-narrow cofferdam with a larger aspect ratio, if the airbag is used to slide down the river, the down-river slideway and the bottom compartment structure need to be set up to assist in the down-river and flotation, and it needs to be subdivided into the river and then connected to the water. , in order to avoid its overturning. In addition, to ensure that the cofferdam is normally floated in place, the water depth is required to be high. In the shallow area of ​​the riverbe...

AI Technical Summary

Problems solved by technology

In addition, to ensure that the cofferdam is normally floated in place, the requirements for water depth are relatively high. In areas where the river bed is shallow, a large amount of dredging work is required, which is time-consuming and laborious.

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