Concrete pier/column reinforcing device based on aluminum alloy and construction method thereof

Abstract

The invention discloses a concrete pier / column reinforcing device based on aluminum alloy. The reinforcing device is of a rectangular structure defined by four special-shaped hollow aluminum alloy plates and is arranged outside a concrete pier / column in a sleeving mode. Every two adjacent special-shaped hollow aluminum alloy plates are in welded or bolt connection. Structural adhesives are poured between the inner wall of the rectangular structure and the outer wall of the concrete pier / column. The rectangular structure and the concrete pier / column are fastened through bolts. The reinforcing device is diversified in structural form, has good corrosion resistance and durability, and is low in weight, high in strength, convenient to manufacture, machine, transport and mount, easy to construct and low in cost.

Description

technical field [0001] The invention belongs to the technical field of bridge structures, in particular to an aluminum alloy-based concrete pier / column reinforcement device and a construction method thereof. Background technique [0002] Concrete has become the most widely used building material due to its superior pressure bearing, fire prevention, abundant material sources and economical cost performance. The reason is that the bearing capacity of the reinforced concrete pier / column is insufficient. The reason for the insufficient bearing capacity is that the fire reduces the strength of the concrete and steel bars of the reinforced concrete column, or the load on the column increases due to the change of the use function of the structure, etc. When these situations occur, reinforced concrete columns need to be reinforced. There are many reinforcement methods for reinforced concrete piers / columns, and the commonly used traditional reinforcement methods include outsourcing...

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Problems solved by technology

[0003] Outsourcing concrete reinforcement method, pouring a certain thickness of concrete around the piers and columns, wrapping the piers and columns to form an overall force bearing, has disadvantages or problems: the improvement of the bearing capacity of the piers and columns is limited; the compression resistance of concrete cannot be fully utilized Advantages; outsourcing concrete has durability problems, especially in coastal areas; it is difficult to ensure the connection of new and old concrete; after reinforcement, it is inconvenient for secondary maintenance within the service life of piers and columns

[0004] Outsourcing steel pipe reinforcement method, pouring a certain thickness of concrete around piers and columns, and outsourcing steel pipes outside the concrete to form a whole for stress, there are shortcomings or problems: outsourcing steel pipes have durability problems, and more costs are required for anti-corrosion maintenance in the later stage , especially in coastal areas; after reinforcement, it is inconvenient for secondary maintenance within the service life of piers and columns; the structural form is single, and the bearing capacity is limited

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