Wood truss support structure for arch cap formwork of rigid frame arch bridge and construction method of wood truss support structure

Abstract

The invention relates to a wood truss support structure for an arch cap formwork of a rigid frame arch bridge and a construction method of the wood truss support structure. The structure comprises a lower suspension pull and support rod and an upper suspension arc longitudinal beam, wherein the two ends of the upper suspension arc longitudinal beam are fixedly connected with the two ends of the lower suspension pull and support rod to form a closed bowstring structure, a plurality of vertical wood rods are fixedly connected between the lower suspension pull and support rod and the upper suspension arc longitudinal beam, inclined support rods are arranged among the vertical wood rods, the lower suspension pull and support rod, the upper suspension arc longitudinal beam, the vertical wood rods and the inclined support rods are fixedly connected with one another to form a truss with multiple triangular stable structures, and horizontal pull rods and vertical bridging rods are arranged among a plurality of trusses and are pulled to form an integrated structure. The construction method comprises the following steps of: reinforcing a foundation; constructing arch foot bearing table; elastically setting a control line; installing the lower suspension pull and support rod; and symmetrically installing the plurality of trusses and the like. The structure has a combined effect of effectively supporting a constant load and a construction load, and the construction safety and the shaping quality of an arch cap structure of the rigid frame arch bridge are improved.

Description

[0001] technical field [0002] The invention relates to an arch helmet template wooden truss support structure of a rigid arch bridge and a construction method thereof, belonging to the technical field of municipal bridge construction. [0003] Background technique [0004] At present, the construction method of arch helmet formwork support of rigid-frame arch bridges mostly adopts the steel pipe full frame method, that is, vertical steel pipes, horizontal steel pipes, sweeping poles, adjustable brackets, fasteners, wooden back corrugations, etc. Made of buckle. The spacing and step distance of the steel pipes are determined according to the joint action of the constant load and the construction load. The steel pipes are fastened with construction fasteners. The upper end of the vertical poles is inserted into the adjustable bracket and supported on the main flute made of horizontal steel pipes. The upper layer of the main corrugated corrugated wood is used as the seconda...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing arch helmet formwork support system cannot effectively ensure the quality of concrete molding and has poor economic efficiency, the present invention proposes a wooden arch helmet formwork wooden truss support structure for a rigid arch bridge and a construction method thereof, which can When pouring concrete for the arch helmet structure, use the multi-triangular stability system of the truss structure to form a whole to improve the overall mechanical performance of the system, effectively ensure the forming effect of the concrete for the arch helmet structure of the rigid arch bridge, and effectively reduce the lower radial defects of the structural forming

Images