Reinforcing member for punching resistance and construction method

Abstract

The present invention provides: a reinforcing material for preventing punching shear, whereby punching shear is prevented by constituting a conical or semi-spherical reinforcing material, of which the cross-sectional size gradually increases downwards, such that the range of resistance to shearing forces is spread widely; and a construction method using same for areas where slabs join with pillars and where pillars join with spread foundations. The reinforcing material for preventing punching shear of the present invention comprises: an upper disk having a predetermined thickness; a skirt section which extends from the circumference of the upper disk, and widens from the top to the bottom as the cross sectional area gradually spreads in a zone of a fixed height; and a concrete charging chamber which opens towards the bottom such that the inside of the skirt section can be filled with concrete.

Description

technical field [0001] The present invention relates to reinforcement members for punching resistance For resisting punching at the junction of a plate and a pillar, or at a junction of a pillar and an enlarged foundation, particularly, a reinforcing member for punching resistance, a board and a pillar using the reinforcing member, and a junction of a pillar and an enlarged foundation A construction method that broadly expands the range of resistance to shear force by forming conical or hemispherical reinforcement members to resist punching Background technique [0002] The general forms of ordinary reinforced concrete structures include: slab, the slab The ground of each layer is formed and a preset area is provided; the pillar is used to support the plate and can transmit the self-weight of the structure and the use load generated by each layer to the foundation part. In such a reinforced concrete structure, a shear force acts on the joint between the plate and the pil...

AI Technical Summary

Problems solved by technology

Since this punching failure is brittle unlike other forms of failure, it has a fatal impact on the safety of the plate-pillar joint

[0004] As a method of reinforcing the plate-pillar junction in this structure, the method adopted has a supporting plate and a column head around the column, but the problem that it exists is that the mold for setting the supporting plate or the column head is cumbersome to manufacture, and Not very effective at enhancing performance either

[0007] However, the above-mentioned former background art has disadvantages of increased workload due to installation of GFRP poles and laying work of fiber-reinforced concrete, and increased construction costs due to fiber-reinforced concrete

In addition, the latter background art has a problem that since its structure is that the steel shear strip is welded to the pillar, it increases the connection work and has the possibility of causing a defect in the welded joint.

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