Exceeding thousand tons of linear steel trussed beam floating pushing erecting construction method

Abstract

The invention relates to the technical field of construction, in particular to an exceeding thousand tons of linear steel trussed beam floating pushing erecting construction method. The exceeding thousand tons of linear steel trussed beam floating pushing erecting construction method is characterized in that a steel trussed beam is assembled in advance in an offshore assembling site and then is continuously pushed through a hydraulic jack to enable a cantilever to be appropriate, then one end of the steel trussed beam is arranged on a bearing beam bracket supporting system which is formed by a barge, the barge drains water to lift and support the beam and continuously pushes the steel trussed beam to be advanced, the direction is adjusted in real time until the steel trussed beam is in place, water is injected into the barge, the support is converted, the top is mounded and the beam falls off, and the support is installed. Compared with the prior art, the exceeding thousand tons of linear steel trussed beam floating pushing erecting construction method has the advantages of being simple in equipment, convenient to operate, low in labor intensity, low in cost investment, high in construction efficiency and easy to popularize, not polluting river, not damaging the river bank, being short in construction navigation closing time, small in navigation interference, enabling main procedures such as steel trussed beam assembling and barge supporting to operate in a parallel mode and being beneficial to shortening of the working period.

Description

[technical field] [0001] The invention relates to the field of construction technology, in particular to a construction method for super-kiloton-line steel truss girder buoy-supported jacking structures suitable for construction in navigable rivers with slow water depth, relatively stable water levels or complex geological conditions. [Background technique] [0002] During the installation of steel truss girders, construction methods such as gantry crane, walking crane construction method, floating crane construction method, cantilever construction method, longitudinal dragging method, lateral movement construction method, and cable crane method are generally used in China. When installing and constructing steel truss girders in the river, if the above method is used, firstly, the navigable river is busy, ships are not allowed to occupy it for a long time, and temporary buttresses are not allowed to be set in the river, so the above method is not suitable for the construction...

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Problems solved by technology

[0003] The main bridge of Renmin Bridge in Danyang City is designed as a steel truss girder with a span of 104m and a bridge deck width of 32.9m. The Sunan Canal where the site is located is one of the main channels of water transportation in the country and an important part of the Beijing-Hangzhou Canal. The waterway planning level is three. During the construction period, the navigation of the waterway must be guaranteed. The construction of the main bridge is technically difficult and risky

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