Construction method of main and auxiliary arches of double-flying-wing arch bridge and temporary support used by adopting same

Abstract

A temporary support for construction of main and auxiliary arches of a double-flying-wing arch bridge comprises two main and auxiliary arch crossed sections, a main arch non-crossed section, two firstauxiliary arch non-crossed sections, a second auxiliary arch non-crossed section and a main and auxiliary arch support transverse connector. Each main and auxiliary arch cross section comprises a cross section main arch temporary pier support and a cross section auxiliary arch temporary pier support fixed to the top of the cross section main arch temporary pier support. The main arch non-crossedsection is positioned between the two main and auxiliary arch crossed sections; the two first auxiliary arch non-crossed sections are located on the sides, back on to the main arch non-crossed sections, of the two main and auxiliary arch crossed sections correspondingly; the second auxiliary arch non-crossed section is located between the two main and auxiliary arch crossed sections and comprisesa plurality of second non-crossed section auxiliary arch temporary pier supports, one side of each second non-crossed section auxiliary arch temporary pier support is supported on the main beam, and the other side of each second non-crossed section auxiliary arch temporary pier support is fixed to a main beam support; and the main and auxiliary arch supports are transversely connected with the second non-crossed section auxiliary arch temporary pier supports and the main arch non-crossed section. The temporary support is suitable for construction of main and auxiliary arches of the double-flying-wing arch bridge. The invention further provides a construction method of the main arch and the auxiliary arch of the double-flying-wing arch bridge.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction method for a main and auxiliary arch of a double-flying-wing arch bridge and a temporary support used therein. Background technique [0002] The arch ribs of conventional arch bridges usually consist of a pair of vertical parallel arch ribs, and the installation of the arch ribs usually adopts cable hoisting construction, bracket construction and swivel construction. With the development of bridge construction technology and the improvement of the appreciation of urban arch bridges, double-wing arch bridges have begun to receive attention and promotion. See figure 1 The double-flying wing arch bridge 300 usually includes a main girder 310 formed by a steel box and two arch ribs 320 arranged on opposite sides of the main girder 310. Both arch ribs 320 include an outward-inclining main arch 321 and an inward-inclining secondary arch 323. , and the ...

AI Technical Summary

Problems solved by technology

The traditional arch rib installation process can well satisfy the installation of vertical parallel arch ribs or only one-sided inclined arch ribs, but it cannot meet the construction of cross main and auxiliary arches, or additional labor costs, construction period and material costs are added during construction, and There are major construction safety hazards

Images