Structure of alternative folding flange type steel plate shear key and construction method thereof
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A steel plate shear force and flange plate technology, applied in bridge parts, erection/assembly of bridges, bridges, etc., can solve problems such as difficulty in penetrating round holes, and achieve the effect of reducing perforation operations, avoiding cumbersome procedures and facilitating processing
Active Publication Date: 2018-02-09
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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[0004] The object of the present invention is to provide a structure and construction method of an alternately turned flange-type steel plate shear key, which overcomes the shortcomings of the traditional shear key in the background technology, and the shear key ensures that the steel beam and concrete The space between the flanges has sufficient shear strength, and the structure of the alternately folded flanges improves the pull-out performance between the steel beam and the concrete. It is difficult to penetrate the round hole from the side, and it has the advantages of simple structure, convenient and quick construction, and less waste of steel
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Embodiment 1
[0043] A structure of alternately folded flange-type steel plate shear keys, such as Figure 1~4 As shown, the lower steel girder 1 adopts section steel, and the upper flange of the lower steel girder 1, that is, the top plate 9 of the steel girder, is welded with alternately folded flange-shaped steel plate shear keys, and the shear key ribs 2 are provided with semicircular holes 8 , the upper part is the trapezoidal flange plate 3 and the semicircular end plate 4 which are alternately folded, the transverse through steel bar 5 is placed in the semicircular hole 8, and the longitudinally bent steel bar 6 is placed between the flange plates.
[0044] The ribs 2 are vertically arranged with the steel beam roof 9, the ribs 2 are arranged along the length direction of the steel beam roof 9, the ribs 2, the trapezoidal flange plate 3, the semicircular end plate 4, the transverse through reinforcement 5 and the longitudinal bending reinforcement 6 is completely poured into the conc...
Embodiment 2
[0061] A structure of alternately folded flange-type steel plate shear keys, such as Figure 11 As shown, a steel box girder 10 is used including the lower steel girder, and 2 sets of alternately folded flange-shaped steel plate shear keys are welded on the upper flange of the steel box girder, that is, the top plate 7 of the steel girder.
[0062] In the present embodiment, the thickness of the rib plate 2 and the trapezoidal flange plate 3 is 16mm, the height of the rib plate 2 is 100mm, the height of the trapezoidal flange plate 3 is 80mm, and the included angle of the trapezoidal flange plate 3 is 90 °, and the semicircle hole 8 and The diameter of the semicircular end plate 4 is 60mm, the spacing is 200mm, the diameter of the transverse through reinforcement 5 and the longitudinal bending reinforcement 6 is 28mm, and the bending radius of the longitudinal bending reinforcement 6 is 40mm.
[0063] Other structures and construction methods of this embodiment are the same as...
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Abstract
Provided are a structure of an alternative folding flange type steel plate shear key and a construction method thereof. The steel plate shear key includes a ribbed plate which has semicircular holes,trapezoidal flange plates alternatively folding, and semicircular end plates. The semicircular hole is internally provided with a horizontal through rebar. A vertical bending rebar is arranged among the flange plates. An upper concrete panel is poured on a steel beam top plate, and the upper concrete panel completely covers the steel plate shear key. The construction method comprises the followingsteps: cutting and forming steel plates used in the shear key, alternatively folding the trapezoidal flange plates and the end plates, welding the ribbed plate integrally with the steel beam top plate, placing the horizontal through rebars and the vertical bending rebar, binding the structure using a reinforcing mesh, pouring the upper concrete panel and normally maintaining to set time, dismounting a formwork. The alternative folding flange type steel plate shear key is welded integrally with a steel beam, cooperative work of upper concrete and a lower steel beam is realized. The structure is advantaged by simple structure, convenient and fast construction, and little steel material waste, and is beneficial for popularization and application of a steel-concrete combined bridge.
Description
technical field [0001] The invention belongs to the technical field of bridge engineering and steel-concrete composite structures, and in particular relates to a structure and a construction method of an alternately folded flange-shaped steel plate shear key. Background technique [0002] The steel-concrete composite structure uses steel and concrete as the main building materials, and works together through bonding, mechanical occlusion, and connectors to give full play to the advantages of the properties of the two materials. In steel-concrete composite bridges, the shear key is the key to ensure the cooperation between steel and concrete, which not only bears the shear force of the joint surface of steel and concrete, but also bears the pulling force. There are various forms of shear keys, which can be divided into two types according to the deformation capacity: flexible shear keys (mainly studs) and rigid shear keys (mainly perforated steel plates). Existing shear key ...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D21/00
CPCE01D19/00E01D21/00
Inventor 徐宙元
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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