Method for intercepting by utilizing temporary construction traffic bridge

Abstract

The invention discloses a method for intercepting by utilizing a temporary construction traffic bridge. The method is realized by adopting the temporary construction traffic bridge, intercepting piers, a laminated beam and an intercepting berm. According to the technical scheme, a closure gap in the most difficult intercepting time period is arranged between the two piers of the temporary construction traffic bridge; the closure is realized by mounting the laminated beam on the piers; when the construction traffic bridge is designed, the requirement on intercepting is taken into consideration, and the piers at the two dike head ends of the closure gap is reformed to a certain degree, wherein the upstream end part of each pier is changed from a vertical surface into an inclined surface with a certain slope, and a slideway is arranged in the inclined surface; sliding grooves are formed in the two ends of the laminated beam, so that the laminated beam and the slideway are positioned and are engaged; the laminated beam is placed to a preset position under the control of a winch which is arranged on a bridge surface. According to the method, the laminated beam is placed for intercepting by utilizing the temporary construction traffic bridge, so that the success closure of a high-difficulty intercepting project can be realized quickly; the method has the characteristics of high safety, reliability, and rapidness.

Description

technical field [0001] The technical field of the invention belongs to the field of hydropower project construction closure, in particular to a river course closure method with a temporary construction traffic bridge. Background technique [0002] Closure is an important part of hydropower project construction, and the success or failure of closure directly affects project investment and construction period. For difficult closure projects, most of the previous engineering practices used wide dikes, double dikes or multiple dikes combined with throwing large stones (strings), steel gabions (strings) and artificial shaped objects (strings) to achieve closure. There are many problems such as large materials and special materials, large loss, complicated construction organization, low construction safety and high construction cost. During the construction of hydropower projects, there is a large amount of logistics deployment on the left and right banks, and it is often necessa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a closure method using temporary construction traffic bridge closure, so as to solve the problem of high hydraulic index, large particle size of throwing materials, large amount of special materials, large loss of interception materials, and construction safety during the difficult period of closure. low, or even failure to successfully intercept and many other problems

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