Construction method of fabricated steel trestle

Abstract

The invention discloses a construction method of a fabricated steel trestle. The method comprises the following steps: completing the installation construction of a beret piece assembly frame with a preset length of a first span, installing an upper positioning frame on the upper surface of a preset position of the beret piece assembly frame, installing a lower positioning frame at a corresponding position of the lower surface of the beret piece assembly frame, and connecting the lower positioning frame with the upper positioning frame; inserting and driving the steel pipe piles by using the upper and lower positioning frames, sinking the lower positioning frame to the bottom and fixing, mounting a counterweight piece on the upper part of the lower positioning frame, and mounting a support frame between the adjacent steel pipe piles; cutting off steel pipe piles with preset sizes, mounting cap beams on each group of steel pipe piles in the length direction of the steel trestle, mounting carrying pole beams on the cap beams in the width direction of the steel trestle, removing the upper positioning frame, fixing the beret piece assembly frame, and paving transverse distribution beams and bridge deck steel plates on the beret piece assembly frame; and connecting the beret piece assembly frames with the preset length in the next span arrangement direction. According to the method, the integrity and stability of a bottom supporting system during steel trestle construction can be effectively and quickly enhanced.

Description

technical field [0001] The invention belongs to the technical field of water transportation engineering construction, and in particular relates to a construction method of an assembled steel trestle bridge. Background technique [0002] At present, in the construction of municipal bridges in water, steel trestles and working platforms need to be installed to meet the construction needs. Floating cranes or heavy machinery are often used for construction by fishing methods. The steel trestle foundation needs a certain bearing layer to ensure the stability of the foundation. If there is no bearing layer bare rock foundation steel trestle installation, it is necessary to use water boats to carry out the pilot hole, the construction work is difficult and the construction period is long, especially the water boats are required to cooperate with the construction, and the operators and ships work under the condition of rapid water flow. There are potential safety hazards, and it is ...

AI Technical Summary

Problems solved by technology

The steel pipe piles of this method have certain disadvantages in the construction of steel trestle bridges in the environment of large water flow and deep river water, especially in the environment of bare rock without bearing layer. Safety risk. Subsequent construction of the bottom support of the steel pipe pile is complicated and the operator spends a long time in deep underwater construction, which poses certain safety risks.

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