A quick connection method for prefabricated steel pipe-constrained steel concrete pier columns and cap beams

Abstract

The invention discloses a quick connection method for prefabricated steel pipe constraint type steel concrete pier columns and a cover beam. The method comprises the steps that when the steel concrete cover beam is prefabricated, reserved holes used for connecting the two elements are formed in the portions, corresponding to the pier columns, of the steel concrete cover beam; at the bottom interfaces of the steel pipe constraint type steel concrete pier columns and the cover beam, profile steel flange plates extend to the positions under stressed reinforcing steel bars arranged at the top of the cover beam, steel pipes at the peripheries of the pier columns do not extend, and steel bars connected with the cover beam need to be embedded in stand column sections at the top ends of the pier columns, wherein the anchorage length of the steel bars and the depth that the steel bars are embedded into the cover beam need to meet the related bridge design specification construction requirements; transverse steel bars are arranged in profile steel flange plate anchorage holes formed in the reserved holes of the cover beam in a penetrating mode and connected together with the steel bars arranged at the peripheries of the reserved holes of the cover beam, and concrete is poured in the reserved holes. According to the method, the problems that the construction occupation site is large, the construction period is long, part of connection work procedures are trouble, and welding is difficult are solved, the connection reliability and bearing capacity of this kind of bridge piers are guaranteed, and the resistance, the shock resistance and the rigidity of the bridge piers are improved.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a quick connection method for a prefabricated steel pipe-constrained steel concrete pier column and a cover beam. Background technique [0002] In bridge engineering, with the development of the iron and steel industry and the decline of material prices, in addition to the conventional cast-in-place reinforced concrete piers and foundations, some steel pipe concrete, steel concrete piers and aluminum alloy pipes are gradually proposed and adopted in the engineering field. Confined steel concrete bridge piers and columns, especially steel pipe confined steel concrete combines the advantages of steel pipe concrete and steel concrete, and has the characteristics of high rigidity, high bearing capacity, good seismic performance, and convenient prefabricated construction and assembly. However, due to the relatively lagging limitations of current research and engineering design, my co...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of traditional cast-in-place reinforced concrete piles and cap beams, which occupy a large space for construction, long construction period, troublesome part of the connection process, difficult welding, low reliability, high cost of construction delay, etc.

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