Combined connection component of rigidity-controllable section steel and concrete, and use method thereof
A combined connection and concrete technology, which is applied to bridge parts, erection/assembly of bridges, bridge materials, etc., can solve the problems that cannot consider the requirements of construction process and material performance, limit concrete shrinkage and deformation, and high shear stiffness of connectors. Meet the requirements of material performance and construction process, reduce the impact of concrete shrinkage deformation, and prevent concrete shrinkage cracks
Inactive Publication Date: 2011-01-19
TONGJI UNIV
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Problems solved by technology
The main connecting parts currently used all have a common feature, that is, the connecting parts have a large shear stiffness from the beginning, and the requirements of the construction process and material properties cannot be considered.
Especially in the construction stage of applying prestress to the concrete of composite structure bridges, due to the high shear stiffness of the connectors, the steel and concrete work together, resulting in prestress loss and concrete damage; another unfavorable situation is that the steel structure limits the concrete. The shrinkage deformation of the concrete leads to secondary internal forces in the concrete, and shrinkage cracks are prone to occur
Method used
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[0019] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.
[0020] Such as figure 1 As shown, the rigidity-controllable combined connector of the present invention mainly includes a round pipe 1, which can be a steel pipe, and the hollow round pipe is filled with a mixture 2 of high-hardness resin and silica sand. The wall thickness, inner diameter and height of the hollow circular pipe 1 are selected according to the requirements of structural stress; the hardness of the resin and the mixing ratio of resin and silica sand are selected according to the requirements of stiffness and lag time. At the same time, the hollow round pipe 1 can also adopt the type with thread 11 on the pipe wall, or the form with a nut 12 at the end.
[0021] Such as figure 2 As shown, when the round pipe 1 is directly welded on the steel plate 3, the end of the hollow round pipe 1 is welded together with the steel plate 3, ...
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The invention belongs to the technical fields of structural engineering and bridge engineering, in particular to a combined connection component of rigidity-controllable section steel and concrete and a use method thereof. The combined connection component comprises a circular pipe and a filling component, wherein the outer wall of the circular pipe is smooth and also can be provided with screw threads, or the end part is provided with a screw cap, the hollow circular pipe which is filled with the mixture of high-hardness resin and siliceous sand is welded on a steel plate of a combination face of the steel and the concrete, or an apertured steel plate is welded on the steel plate of the combination face of the steel and the concrete, then the circular pipe which is filled with the mixture of the high-hardness resin and the siliceous sand is penetrated into the apertured steel plate, reinforced bars are configured according to the requirement, and the combined connection component is formed after the concrete is poured. The invention has simple manufacture and can improve the adverse influence of the construction process, the concrete shrinkage deformation and the like on the stress performance of the combined structure.
Description
technical field [0001] The invention belongs to the technical field of structural engineering and bridge engineering, and in particular relates to a composite connector of steel and concrete with controllable shear stiffness and a use method thereof. Background technique [0002] The mechanical properties of steel-concrete composite structures are not only affected by their own material properties, but also have a great relationship with the shear resistance of the joint surface connectors. The main connecting parts currently used all have a common feature, that is, the connecting parts have a large shear stiffness from the beginning, and the requirements of the construction process and material properties cannot be considered. Especially in the construction stage of applying prestress to the concrete of composite structure bridges, due to the high shear stiffness of the connectors, the steel and concrete work together, resulting in prestress loss and concrete damage; anothe...
Claims
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IPC IPC(8): E04B1/38E04B1/14E04B1/16E01D19/00E01D21/00E01D101/30E01D101/26
Inventor 刘玉擎赵晨王倩邢昕
Owner TONGJI UNIV