KR20160055330A - Reinforcing Method by External Precast Concrete Wall Panel Using Prestressing Strands - Google Patents

Abstract

The present invention relates to a pre-cast wall for reinforcing lateral strength resistance and a method for reinforcing seismic resistance of a non-seismic structure using prestressing. More particularly, the present invention relates to a precast wall between columns and columns of non- And more particularly, to a precast wall for reinforcement of a lateral force resistance and a method of reinforcing an earthquake-resistant structure of a non-earthquake-resistant structure using prestressing so as to reinforce a non-seismic structure by introducing prestressing.
In a preferred embodiment of the present invention, (a) a precast wall in which widthwise perforations are formed at regular intervals in the height direction, the perforation holes penetrating from the rear surface to the front surface or from the rear surface to the front surface, And positioning it on the outer surface of the column and the column; (b) installing a reinforcing member and a fixing anchor on a corner or a side of the column; (c) fixing one end of the strand to the fixing anchor, passing the strand through the perforation hole of the precast wall, and winding the strand around the column; (d) tensioning the strand and fixing the other end to the fixing anchor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcement method of a non-seismic structure using a precast wall for reinforcing lateral force resistance and a prestressing method,

The present invention relates to a pre-cast wall for reinforcing lateral resistance and a method of reinforcing a seismic-resistant structure of a non-seismic structure using prestressing, and more particularly to a method of constructing a precast wall on the outer surface between columns and columns of non- The present invention relates to a pre-cast wall for reinforcing a lateral force resistance and a method of reinforcing a seismic resistant structure of a non-seismic structure using prestressing, in which seismic reinforcement of a non-seismic structure can be reinforced by introducing prestressing by joining columns and precast walls.

Recent earthquakes in neighboring countries, such as the Sichuan earthquake in China and the Great East Japan Earthquake, have increased the number of cases of serious human and property damage, and domestic anxiety about earthquake risk is rising.

In Korea, the seismic design was mandatory in 1988, but many of the domestic structures were built before 1988, which failed to satisfy the current seismic design regulations. Therefore, there is a growing need for seismic retrofitting of existing structures with non - seismic detail, and attempts have been made to improve seismic performance in various ways. In the case of seismic strengthening of a structure having such non-seismic detail, generally, a method of a wall-wall type is used in order to improve rigidity and strength, but there is a problem such as an increase in construction period and lowering of workability.

As a background technique of the present invention, there is a patent application No. 1277752 entitled " Remodeling construction method in which an outer wall precast concrete panel is fitted in an inner section of a building beam-column structure " In the above background art, as shown in FIG. 5, a step of molding a PC panel having an engaging hole to which an engaging member is connected to an outer periphery of a proof stressor non-stress plate type PC panel so as to be installed between a beam and a column of a building to be constructed ; Installing the PC panel between the beam and the column, wherein the PC panel is mounted on the lower slab so that the PC panel is sandwiched between the beam and the column at a predetermined error interval; Joining the PC panel to the existing beam and the column by coupling the joining hole and the beam and the column of the installed PC panel to each other using the connecting iron as the joining member; Wherein the step of joining the PC panel to the beam and the column as the parent material is performed by partially reducing the space between the beam and the beam of the building to be installed and between the column and the column, Providing a PC panel having a reinforcing rib (2) formed of a plurality of projections on one surface or both surfaces thereof and having a coupling hole to which a coupling member is connected at a periphery thereof; And a step of covering the space between the column and the beam with one end of the installed PC panel with two urethane joints. [5] The method as claimed in claim 1, wherein the outer panel precast concrete panel is inserted into the inner space of the building beam- Installation remodeling construction method.

However, the above background art has a problem that the workability is poor due to the complexity of the details, so that the construction period is increased and the strength of the column itself can not be increased.

Patent Registration No. 1277752 "Remodeling construction method to install exterior wall precast concrete panel in the inside section of building beam - column structure"

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a non-earthquake-resistant structure in which a precast wall is formed on the outer surface between columns and columns, So that the shear strength of the column is increased by external prestressing and the precast wall is joined to the column by prestressing to resist the lateral force so that the construction can be easily carried out and the lateral resistance It is an object of the present invention to provide a seismic reinforcing method of a non-earthquake-resistant structure using reinforced precast walls and prestressing.

(A) A precast wall in which widthwise perforations are formed at regular intervals in the height direction, the perforation holes penetrating the side surface or the rear surface to the front surface in the rear surface portion are made to face each other at both ends of the rear surface, On an outer side surface between the outer surface and the outer surface; (b) installing a reinforcing member and a fixing anchor on a corner or a side of the column; (c) fixing one end of the strand to the fixing anchor, passing the strand through the perforation hole of the precast wall, and winding the strand around the column; (d) tensioning the strand and fixing the other end to the anchoring fixture, and to provide a seismic reinforcement method of a non-seismic structure using prestressing.

Also, in the step (a), a precast wall for reinforcing a lateral force resistance and an earthquake-proof reinforcement method of a non-earthquake-resistant structure using prestressing are provided, wherein an opening is formed through the central portion of the precast wall.

Also, in the step (a), a spiral reinforcing bar is embedded outside the perforation hole of the precast wall, and a method of reinforcing a seismic reinforcement of a non-seismic structure using prestressing.

In the step (b), the reinforcing member is formed integrally with the entire height of the column or at a position where the strand of the strand passes. The pre-cast wall for reinforcing the lateral force resistance and the seismic reinforcement of the non-seismic structure using the prestressing Method.

Also, in the step (b), the reinforcing member is provided with a seating groove having the same thickness as the strand of the strand, and a method of reinforcing the seismic reinforcement of a non-seismic structure using prestressing.

Further, in step (c), the stranded wire is wound and fixed on the column for each height at which the perforation hole is formed, or one stranded wire is wound and spirally wound from the lower part to the upper part of the column, Earthquake-resistant structures using precast walls and prestressing.

The pre-cast wall for reinforcing the lateral force resistance and the seismic reinforcement method for a non-seismic structure using the prestressing structure constitute a precast wall between the column and the column of the non-seismic structure, and the column and the precast wall are combined using the strand, The shear strength of the column is increased by external prestressing and the precast wall is bonded to the column by prestressing to resist the lateral force so that the construction can be facilitated and the nonseismic structure can be effectively Can be reinforced.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a construction flowchart showing a precast wall for reinforcing the lateral force resistance of the present invention and an earthquake-proofing method for a non-seismic structure using prestressing in the order of construction.
2 is a view showing a precast wall for reinforcing the lateral force resistance of the present invention and a precast wall used in a seismic-strengthening method of a non-seismic structure using prestressing.
FIG. 3A is a cross-sectional view of a column showing various embodiments of various reinforcing members in a seismic reinforcing method for a non-earthquake-resistant structure using a pre-cast wall for reinforcing the lateral force resistance of the present invention and a prestressing method.
3B is a perspective view showing another embodiment of the reinforcing member in the pre-cast wall for reinforcing the lateral force resistance of the present invention and the seismic reinforcement method of the non-seismic structure using the prestressing.
4 is a perspective view illustrating an embodiment of a reinforced concrete structure of a non-earthquake-resistant structure using a pre-cast wall for reinforcing a lateral force resistance according to the present invention and a prestressing method.
FIG. 5 is a view showing a remodeling construction method in which an outer wall precast concrete panel is installed in an interior section of a conventional building beam-column structure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

The precast wall for reinforcing the lateral force resistance of the present invention and the seismic reinforcement method of the non-seismic structure using the prestressing structure constitute the precast wall of the outer side between the columns and the columns of the non-seismic structure, and the columns and the precast walls And reinforcing the non-seismic structure by introducing prestressing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a construction flowchart showing a precast wall for reinforcing the lateral force resistance of the present invention and an earthquake-proofing method for a non-seismic structure using prestressing in the order of construction.

The present invention firstly secures the precast wall 30 to the column 10 of the non-seismic structure, as shown in Figs. 1A and 1B (a).

The precast wall body 30 is placed between the pillars 10 on the pillars 10 such that both side ends of the pillars 10 face the pillars 10 and 10, respectively.

That is, the precast wall 30 is positioned between the column 10 and the column 10 so that both sides of the precast wall 30 face the one side of each column 10.

The precast wall 30 of the present invention is formed by perforating the perforation holes 31 at both sides in the width direction at a predetermined height.

The perforation hole 31 may be formed to penetrate from the rear portion of the precast wall 30 to the side or penetrate from the rear portion to the front portion of the precast wall 30, .

The perforation hole 31 of the precast wall 30 may be formed to penetrate the precast wall 30 in a straight line and penetrate the precast wall 30 in a curve similar to the traveling direction of the strand 40 So that the prestress can be efficiently introduced.

The portion of the rear wall of the precast wall 30 where the perforation hole 31 is formed is spaced inwardly from the lateral end of the precast wall 30 at a greater distance than the width of the column 10, When the precast wall 30 is fixed to the column 10 of the non-earthquake-resistant structure, the perforation hole 31 is not blocked or interfered by the column 10. [

2A is a cross-sectional view of a precast wall for reinforcing a lateral force resistance according to the present invention and a precast wall used in a seismic reinforcement method of a non-seismic structure using prestressing, in front, side and plane.

As shown in FIG. 2A, the perforation holes 31 are formed at predetermined intervals in the height direction of the precast wall 30 so that a stranded wire 40, which will be described later, covers the column 10 at regular intervals.

The reinforcing effect around the perforation hole 31 is enhanced by embedding the spiral reinforcing bar 32 on the outer side of the perforation hole 31 of the precast wall body 30, Reinforcement rods may be additionally formed on both sides of the precast wall 30 where the holes 31 are formed.

1C, the reinforcing member 20 and the fixing anchor 50 are installed on the column 10, the strand 40 is wound around the column 10 and wound (c) The strand 40 is tensed and a prestress is introduced to fix the anchor 50 (d).

The reinforcing member 20 is provided with a reinforcing member 20 for reinforcing the reinforcing member 20 such that the reinforcing member 20 is directly supported by the edge of the pillar 10 when the pillar 10 is tensed, And the reinforcing member 20 is previously formed at a position where the reinforcing member 20 passes. The reinforcing member 20 can also be formed on the edge or side portion of the precast wall 30, if necessary, for the same reason as the column 10, as in FIG.

FIG. 2B is a front view of a precast wall for reinforcing the lateral force resistance of the present invention and another embodiment of the precast wall used in the method for seismic strengthening of a non-seismic structure using prestressing. FIG.

In addition, as shown in FIG. 2B, the opening 33 may be formed through the center of the precast wall 30.

like this. The precast wall 30 previously manufactured in the factory can be provided with an opening 33 in advance to secure a view and can be used in various ways such as installing a separate window between the column 10 and the column 10.

The opening 33 may be formed in various sizes and formed at the center of the precast wall 30, but may be formed at an upper portion, a lower portion, or a side portion at a central portion.

FIG. 3A is a cross-sectional view of a column showing various embodiments of various reinforcing members in a seismic reinforcing method for a non-earthquake-resistant structure using a pre-cast wall for reinforcing the lateral force resistance of the present invention and a prestressing method.

3A, 3B, and 3C, the reinforcing member 20 may be formed of various shapes and materials such as an angled angle or the like. The inner side may be formed at the corner of the column 10 and the inner side may be formed at the corner of the column 10 as shown in FIG. The side surface may be formed in a shape that is convexly formed in a semicircular or arcuate shape so as to be formed on the side of the column 10.

3B is a perspective view showing another embodiment of the reinforcing member in the pre-cast wall for reinforcing the lateral force resistance of the present invention and the seismic reinforcement method of the non-seismic structure using the prestressing.

The reinforcing member 20 may be formed to have the same height as or similar to the overall height of the column 10 so that the reinforcing member 20 can be formed integrally with the entire height of the column 10, As shown in FIG. 3B (a), they may be formed individually at a short height and at a position where the stranded wire 40 passes.

3B, the reinforcing member 20 is formed to have a seating groove 21 having the same thickness as that of the strand 40 so that the strand 40 can be stably wound and slip can be prevented have.

The fixing anchor 50 may be formed to have various cross-sectional shapes such as a c-shaped section, a b-section, an ellipse, and an H-section.

The fixing anchor 50 is fixed to one side of the column 10 to facilitate the fixing of the strand 40.

The strand 40 is fixed on the fixing anchor 50 and then passed through the perforation hole 31 of the precast wall 30 so that the strand 40 is wound around the column 10 to be wound and the strand 40 is wound After the tension, the other end is fixed to the fixing anchor 50 again.

4 is a perspective view showing an embodiment of a reinforced concrete structure of a non-earthquake-resistant structure using a pre-cast wall for reinforcing the lateral force resistance of the present invention and a prestressing structure, and the reinforcement member 20 is not shown for the sake of convenience.

As shown in FIG. 4A, the reinforcement is reinforced by the pre-cast wall for reinforcing the lateral force resistance of the present invention and the seismic reinforcement method of the non-seismic structure using the prestressing. 4a (b), the stranded wire 40 may be fixed to the column 10 separately for each height at which the perforation hole 31 is formed, It may be wound and rotated to individually join.

In the case where the strand 40 is wound and fixed to the column 10 at each height at which the perforation hole 31 is formed, the fixing anchor 50 is formed for each height at which the perforation hole 31 is formed, One end of the strand 40 is fixed to the fixing anchor 50 and the other end is fixed to the same fixing anchor 50.

When one strand 40 is spirally wound and fixed from the bottom to the top of the column 10, the fixing anchor 50 is formed on the top and bottom of the column 10, After one end of the strand is fixed to the anchor 50, the column 10 is spirally wound around the perforation hole 31 of the precast wall 30 and the other end of the strand 40 is wound around the fixing anchor 50 And the other end is fixed.

As shown in FIG. 4B, when the precast wall 30 is formed with the opening 33, there is an opening 33 opened between the column 10 and the column 10.

The column 10 of the existing non-earthquake-resistant structure tilts the strand 40 so that the shear strength is increased by introducing the prestress, and the column 10 of the existing non-seismic structure is additionally provided between the column 10 and the column 10 The precast wall 30 is bonded to the column 10 by introducing a prestress so as to resist the lateral force.

The pre-cast wall for reinforcing the lateral force resistance and the seismic reinforcement method for the non-seismic structure using the prestressing structure of the present invention constitute a precast wall between columns and columns of the non-seismic structure, The shear strength of the column is increased by the external prestressing and the precast wall is bonded to the column by the prestressing to resist the lateral force so that the construction can be facilitated, The structure can be effectively reinforced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Columns
20: reinforcing member
21: seat groove
30: Precast wall
31: Perforated hole
32: Spiral reinforcing bars
33: opening
40: Strand
50: Settling anchor

Claims (6)

(a) A precast wall (30) having perforated holes (31) penetrating from both sides in the width direction to the front or back side at regular intervals in the height direction is inserted into the columns (10) (10) and the column (10), respectively;
(b) installing a reinforcing member (20) and a fixing anchor (50) on the edge or side of the column (10);
(c) fixing the one end of the strand 40 to the fixing anchor 50, passing the perforation hole 31 of the precast wall 30 and winding the strand 40 on the column 10;
(d) tensioning the strand (40) and then fixing the other end to the anchoring fixture (50). The method according to claim 1,
In step (a)
A precast wall for reinforcing a lateral force resistance and an earthquake-proof reinforcement method of a non-earthquake-resistant structure using prestressing, characterized in that an opening (33) is formed through the center portion of the precast wall (30). The method according to claim 1,
In step (a)
And a spiral reinforcement (32) is embedded in the outer side of the perforation hole (31) of the precast wall (30). The pre-cast wall The method according to claim 1,
In the step (b)
The reinforcing member (20) is integrally formed at the entire height of the column (10), or is formed at a position where the strand (40) passes. The precast wall for reinforcing the lateral force resistance and the seismic resistance of the non- Reinforcement method. The method according to claim 1,
In the step (b)
Wherein the reinforcing member (20) is formed with a seating groove (21) having the same thickness as the strand (40), and a method for reinforcing seismic resistance of a non - seismic structure using prestressing. The method according to claim 1,
In the step (c)
The strand 40 may be wound and fixed to the column 10 for each height at which the perforation hole 31 is formed or may be formed by winding one strand 40 in a spiral manner from the bottom to the top of the column 10 Precast walls for reinforcement of lateral force resistance and seismic strengthening method of non - seismic structures using prestressing.

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