Rigid connection structure between upper precast concrete column and lower precast concrete column and rigid connection structure of precast concrete beam using the same

Abstract

Provided is a rigid connection structure including: a lower PC column having column concrete, a lower column plate disposed on top of the column concrete, and a plurality of lower column reinforcing bars buriedly arranged vertically in the interior of the column concrete and having upper ends penetrated into the lower column plate in such a manner as to be exposed to the outside; and an upper PC column having column concrete, an upper column plate disposed on top of the column concrete, and a plurality of upper column reinforcing bars buriedly arranged vertically in the interior of the column concrete and having lower ends penetrated into the upper column plate in such a manner as to be exposed to the outside.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to a rigid connection structure between an upper precast concrete column and a lower precast concrete column and a rigid connection structure of a precast concrete beam using the same that improve a column-column connection and a column-beam connection, while performing moment connection, that is, rigid connection, in a dry construction method, thereby enhancing the constructability thereof to allow the rigid connection to be achieved only by the connection of reinforcing bars before concrete is cast on the connections.Background of the Related Art[0002]So as to ensure good constructability and reduce a construction period, recently, a precast concrete (hereinafter, referred to as “PC”) method has been increasingly adopted.[0003]Examples of the conventional PC method include a method for simply mounting a PC beam onto a PC column and a method for unitarily casting a PC column and a PC beam.[0004]The...

AI Technical Summary

Benefits of technology

The present invention aims to improve rigid connections between PC columns and beams by introducing new methods to achieve moment connections during construction. These methods enhance constructability and allow for rigid connections to be achieved with reinforcing bars only, prior to the casting of concrete. This results in improved performance and efficiency in the construction process.

Problems solved by technology

The method for simply mounting the PC beam onto the PC column is one of methods widely used currently, which is capable of somewhat reducing the construction period, but since a column and beam connection in the method is made through simple jointing, a moment cannot be transferred in this method when a lateral force like an earthquake is applied.

Accordingly, lateral force reinforcing means like shear walls, braces and so on should be additionally located, thereby failing to provide the advantages of the PC method planned for reducing the construction period and unavoidably increasing construction cost and period.

When the PC beam is simply mounted on the PC column, further, the escape of the column-beam connection may be generated to cause safety accidents.

Accordingly, the structural instability in the column-beam connection may be undesirably generated, so that the method for simply mounting the PC beam onto the PC column is limited in the use in high-rise buildings.

In case of the method for unitarily casting the PC column and the PC beam, concrete is cast on a column-beam connection, so that the construction period may be delayed by concrete curing and the structural instability in the column-beam connection may be caused during the concrete curing, thereby being limited in the use in high-rise buildings.

So as to solve the above-mentioned disadvantages of the conventional PC method, recently, many studies on a PC method with moment connection have been made, but such PC method has complicated construction details, a low economic efficiency, and bad constructability, so that it is really hard to apply the PC method to high-rise buildings.

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