Vertical swiveling construction method of dual-steel-arch tower

Abstract

The invention relates to a vertical swiveling construction method of a dual-steel-arch tower, belonging to the field of bridge construction. A vertical swiveling construction mode is adopted in the vertical swiveling construction method which is characterized in that the vertical swiveling construction of dual steel arcs is realized by utilizing the self durable structure of a bridge. The method comprises the following steps of: firstly, mounting a plate-lifting tripod, a steering cable saddle and a steel stranded wire on an inner arch tower for vertically swiveling an inwards arch tower and finishing the welding of an annual welding line of the inwards arch tower; then, carrying out the swiveling construction on an outer arch tower: firstly penetrating the plate-lifting steel stranded wire through the steering cable saddle on the inwards arch tower before construction and carrying out the vertical swiveling construction on the outer arch tower by utilizing the inwards arch tower as a support for swiveling the outer arch tower; and finally, finishing the welding of the annual welding line of the outer arch tower. The invention has the advantages of simple construction, high mounting accuracy, convenience of welding, quality guarantee, smaller danger, less overhead operation, low manufacture cost, short construction period, high construction efficiency, and the like.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, in particular to a construction method for the vertical rotation of double-set steel arch towers. Background technique [0002] At present, the high-altitude docking, positioning, welding and high-altitude operation safety of steel towers are all problems that have not been completely solved. The vertical assembly method is usually used for construction: by setting up scaffolding and supporting platforms, use large-tonnage tower cranes or cranes to assemble piece by piece. The disadvantages of this construction technique are as follows: 1) It is difficult to guarantee the welding quality of the steel arch tower space; 2) It is difficult to control the accuracy of space installation; 3) It is dangerous to work at heights. [0003] In order to ensure the quality of steel tower positioning welding, ensure construction safety, and reduce high-altitude operations, there is currently a "ve...

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Problems solved by technology

[0004] In order to solve the existing technical difficulties and problems in construction, the present invention proposes a construction method for the vertical rotation of double sets of steel arch towers that has not been used in China, that is, the temporary cable towers are not separately set up, and the permanent structure of the bridge itself is used to realize the dual construction method. Vertical swivel construction of steel arch

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