Energy dissipation auxiliary cushion block and method for shear-resisting strengthening of concrete element

Abstract

The invention discloses an energy dissipation auxiliary cushion block and method for shear-resisting strengthening of concrete element. The energy dissipation auxiliary cushion block is of a plate-type structure which is provided with an anchor hole. The two ends of the energy dissipation auxiliary cushion block are 1 / 4 profile bevels. The energy dissipation auxiliary cushion block and a beam / column element needing to be subjected to shear-resisting are fixed, then one end of a fiber sheet material is fixed at the side top of the beam / column element, and the other end of the fiber sheet material bypasses the bottom surface of the beam / column element and then fixed at the top of the other side surface of the beam / column element. In the process that the fiber sheet material bypasses the bottom surface of the beam / column element, the fiber sheet material is put on the energy dissipation auxiliary cushion block. The energy dissipation auxiliary cushion block is simple in structure, light in shape and easy to machine, shear-resisting strengthening is conducted on the beam / column element by using the energy dissipation auxiliary cushion block, the ductility of the beam / column element under a sheared state is improved, the brittle failure problem of the beam / column element after shear-resisting strengthening is solved, and the foreseeability and safety of the strengthened beam / column element before being damaged are improved.

Description

technical field [0001] The invention belongs to the technical field of shear reinforcement of reinforced concrete in civil engineering, and in particular relates to an energy-dissipating auxiliary block for shear-reinforcing beam / column members and using the energy-dissipating auxiliary block for rapid shear-reinforcement of beam / column members Methods. Background technique [0002] In recent years, engineers and technicians have carried out a lot of research work on the shear reinforcement method of reinforced concrete beams / columns. It has the characteristics of high strength, corrosion resistance and simple operation, and when it is used for structural reinforcement, it basically does not increase the weight and size of the structure, so it becomes an ideal reinforcement material, and fiber sheet reinforcement technology has quickly become an international civil engineering technology. It is a popular research and application field in the world. Therefore, in the prior a...

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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides an energy-dissipating auxiliary pad for shear reinforcement of concrete members and a method for rapidly shear-strengthening beam / column members using the energy-dissipating auxiliary pad, which not only saves grinding Concrete surface and glue coating stage, and overcome the obvious defects of the conventional external reinforcement method, such as easy peeling, easy heat softening, fear of aging and degumming, and time-consuming static curing. Lower ductility, improve the brittle failure of beam / column members after shear strengthening, and improve the predictability and safety of strengthened beam / column members before failure

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