KR200318454Y1 - Section enlargement repairing and reinforcing apparatus for reinforcing earing power of reinforced concrete structures by introducing prestress to entended section - Google Patents

Abstract

In order to enhance the bearing capacity of reinforced concrete structures, the present invention is to install a section reinforcement reinforcement device around the bridge and introduce prestressing to the enlarged section to reinforce the load bearing capacity of the bridge. The method of the present invention relates to a method in which a lateral support groove for inserting an H-beam and a vertical reinforcing bar is formed in a bridge support of a bridge, and then the flange of one side of the H-beam is in contact with the pier surface at regular intervals around the pier. While installing, the lower part is inserted into the insertion groove, and the vertical reinforcing bars having a predetermined distance between the H-beams are disposed, and the lower end is inserted into the insertion grooves, and the horizontal reinforcing bars are installed in the abdomen of the H-beams. After the fixed strand guide device is fixedly installed on the other flange of the H-beam, the strand wire is inserted into the groove of the strand guide device. After installation, the strands are fixed using the bidirectional strand fixing device using the anchorage, and then the cross-sectional expansion repair reinforcement device is installed. The present invention relates to a reinforcement construction method for increasing load bearing capacity by enlarging the cross section of a pier by installing concrete to form a uniform coating thickness on the outside of the expansion reinforcement reinforcing device.

Description

Section enlargement repairing and reinforcing apparatus for reinforcing earing power of reinforced concrete structures by introducing prestress to entended section}

In order to enhance the load bearing capacity of reinforced concrete bridges, the present invention is to install a cross-sectional extension repairing reinforcement around the bridge and introduce prestress to the enlarged section to enhance the load bearing capacity of the bridge. A method of construction, in which the flange of one side of the H-beam is formed on the pier surface at regular intervals around the pier after forming an insertion groove of a certain depth into which the H-beam and the vertical reinforcing bar can be inserted into the bridge support of the bridge. The lower part is inserted into the insertion groove while being installed in contact with each other, and vertical reinforcing bars having a predetermined interval are disposed between the H-beams, and the lower end is inserted into the insertion grooves, and horizontal reinforcing bars are installed in the abdomen of the H-beams. After the strand strand guide device is fixedly installed on the other flange of the H-beam, the strand strand is installed around the piers. After installing the cross-section reinforcement reinforcement device in which the stranded line is fixed to the bidirectional stranded line fixing device, after installing it in the groove of the stranded line guide device, the tension line is introduced into the stranded line fixed to one anchorage using the tensioned line tension hydraulic jack. The present invention relates to a repair and reinforcement construction method that increases the load bearing capacity by expanding the cross section of a pier by installing concrete and forming a form so that a constant coating thickness is formed on the outside of the cross-sectional repair and reinforcement device.

The purpose of the present invention is to consist of the stiffeners and the vertical reinforcement H-beams and the vertical and horizontal reinforcement bars, which are the tension members that play the role of horizontal reinforcement and compressive stiffeners. The enlarged cross section around the prestressed cross section allows to increase the required load bearing capacity while maintaining a small cross section.

Another object of the present invention is structural performance such as load capacity, toughness, ductility, and deformation performance by combining H-beam and tension strands and horizontal and vertical rebars and concrete, rather than conventional structural section expansion reinforcement reinforced with conventional reinforced concrete. In addition, it is possible to improve the performance of the existing structure by providing compressive force to the H-beam installed in the vertical direction, and to increase the required structural performance without making the cross section of the pier larger than necessary. In order to improve the disadvantage of damaging the structure by applying a large number of perforations to the pier surface in order to install anchors in the structure, the pulling force is fixed by applying the compressive force to the H-beam installed in the vertical direction through tension of the strand. Structure by anchoring and fixing force and role of horizontal reinforcing bars While minimizing the damage to provide a construction method for enhancing the load-bearing capacity.

In addition, it is to provide a construction method that can ensure the seismic performance resistant to damage factors such as earthquake applied from the outside by expanding the cross section of the bridge to improve the strength and performance of the structure.

Conventional technology is a method of expanding the cross section using anchors and reinforcing bars, and drilling anchor holes in the existing concrete piers by filling and filling the fixing filler to fix the anchors, and then reinforcing the reinforcing bars around the piers and placing concrete. As the anchor holes need to be drilled as many anchor holes as necessary to anchor the existing structures, the increase in the number of anchor holes damages the existing structures, and also injects fixing anchors into the anchor holes and reinforces the reinforcing bars. The work done is quite cumbersome and requires a lot of work and labor. In order to increase the structural performance required for the structure consisting of reinforcing steel and concrete only, the cross section and the amount of material required there will be increased, thereby increasing the construction cost. If you follow, there is a problem that is difficult to apply.

Another conventional technique is a method of fixing steel fixing plate and reinforcing plate made in the form of covering the whole structure around the outer circumferential surface of the structure by installing anchors, and by reinforcing the concrete by applying tension after installing the strand. However, there is no application for actual construction, and the steel fixing plate is in contact with all areas of the pier between the existing structure and the newly placed concrete, so that the adhesive strength of new and old concrete is reduced, which may cause the degradation of crack and reinforcement performance due to material separation. As a relationship, there is a problem that is difficult to apply to actual construction.

The present invention has been proposed to solve the above problems, and it is a vertically installed H-shaped beam that acts as a vertical stiffener and a compressive steel, and as a reinforcing bar and reinforcing bars, which are tension members serving as compressive stiffeners and horizontal rebars. After installing the section enlargement repair reinforcement device and introducing tensile force to the strand, the concrete is poured and the cross section of the bridge can be expanded to reinforce the load bearing capacity of the bridge and to repair the bridge. It can improve the shearing force by installing and provide compressive reinforcement by introducing tension force through the stranded wire installed on the outer circumferential surface of the H-beam to improve the performance of existing structures and secure the required structural performance without increasing the enlarged cross section. Conventional methods make a large number of perforations for anchoring structures As a result of damaging the structure by applying the compressive force through the tension of the strands installed on the outer circumferential surface of the H-shaped beam installed in the vertical direction, the anchors of the pulling and fixing forces and the strands play the role of horizontal reinforcing bars. The cross-section can be minimized, and the cross-section becomes smaller than the conventional reinforcement method, and the cross-sectional enlargement that can be effectively applied to a structure that could not be performed due to the uncertainty about the constraints and the reinforcement performance in applying the conventional technology can be effectively applied. It is to provide a construction method using the reinforcement device of the structure through.

1 is a view showing that the cross-sectional enlargement maintenance reinforcement device of the present invention installed in a reinforced concrete structure.

FIG. 2 shows a portion “A” of FIG. 1;

Figure 3 is a view showing the fixed anchoring of the strand and the installation of the cross-sectional enlargement maintenance reinforcement device of the present invention.

4 is a detailed view of portion “C” of FIG. 3;

5 is a view showing a strand guide device of the present invention.

Figure 6 is a view showing a bidirectional strand wire fixing device of the present invention.

7 is a view showing a unit assembly constituting the strand guide tube of the present invention.

8 is a view showing a wire tension hydraulic jack of the present invention.

<Explanation of symbols for the main parts of the drawings>

A ... reinforced concrete structures 1 ... bridge

2 ... slab 3 ... pier

4 ... Pier Support

10 ... Sectional extension reinforcement device 11 ... H beam

12 ... Insertion groove 13 ... Strand

14 ... Horizontal rebar 15 ... Vertical rebar

20 ... Strand guide 21 ... Separator

22 ... Support 23 ... Home

24 ... H-beam mounting groove

30 ... Two-way strand restraint 31 ... Fixture

32 ... side 33 ...

40 ... Strand tension hydraulic jack 50 ... Strand guide

51 ... Unit Assembly 52 ... Spherical Convex

53 ... Body 54 ... Insertion groove

55 ... through hole

60 ... Hydraulic jack for tension 61 ... Hydraulic inlet for disassembly

62 ... Tension hydraulic inlet 63 ... Fixing head

In order to achieve the above object, the present invention is to install a cross-sectional enlargement repair reinforcement around the bridge to increase the load-bearing capacity of the bridge, which is a reinforced concrete structure, to introduce a prestress on the enlarged cross-section to increase the load bearing capacity of the bridge. The present invention relates to a reinforcement construction method using a reinforcement device, wherein an insertion groove 12 having a predetermined depth for inserting an H-beam 11 and a vertical reinforcing bar 15 into a bridge support 4 of a bridge 1 is provided. After forming, one side flange of the H-beam 11 is installed in contact with the pier at regular intervals around the pier 3 while the lower portion is inserted into the insertion groove 12, between the H-beam 11 Arrange the vertical reinforcing bars 15 having a predetermined interval in the lower end is inserted into the insertion groove 12, the horizontal reinforcing bar 14 is installed in the abdomen of the H-beam 11, the H-shaped On the other flange of the beam 11 After the strand strand guide device 20 is fixedly installed, the strand strand 13 is installed around the piers 3 while being installed to span the groove 23 of the strand strand guide device 20, and then the strand strand is attached to the bidirectional strand strand fixing device 30. After installing the section enlargement repair reinforcing device 10 having the fixed section (13), the tension line is introduced into the stranded line 13 fixed to the anchorage port 31 on one side by using the tension line tension hydraulic jack 40, and then the section enlarged. After installing the formwork to form a constant coating thickness on the outside of the reinforcing reinforcement device 10 is characterized by a reinforcing reinforcement construction method to increase the load bearing capacity by expanding the cross section of the pier (3) by pouring concrete.

The construction method for installing the cross-sectional enlargement maintenance reinforcement device and performing reinforcement is as follows.

The step of arranging the surface of the piers (3) after the reinforcement reinforcement and the insertion groove 12 for inserting the H-beam (11) and the vertical reinforcement (15) at a certain interval on the pier support (4) is formed And installing the H-beam 11 and the vertical reinforcing bar 15 over the outer circumferential surface of the pier 3, and installing a lower end to be inserted into the insertion groove 12. Reinforcing the horizontal reinforcing bars (14) at regular intervals in the longitudinal direction to the abdomen and installing the strand conductor guide device (20) in the longitudinal direction at regular intervals in the outer flange of the H-beam (11) and guide the strand Insert the stranded wire 13 into the groove 23 formed in the device 20 to install the stranded wire 13 over the entire length of the outer circumferential surface of the piers 3 and in one place the stranded wire using the bidirectional stranded wire fixing device 30 (13) the fixing step and the steel settled on one side of the bidirectional strand wire fixing device 30 Connecting the stranded wire tension hydraulic jack 40 to the stranded wire 13 to introduce prestress to the stranded wire 13 and to fix and fix the stranded wire 13 to install the cross-sectional enlargement maintenance reinforcement device 10 and the cross-sectional enlargement maintenance reinforcement device. It is characterized in that the construction through the step of installing the formwork to pour the concrete to maintain the coating thickness on the outside of the (10) and removing the formwork and to clean the surface and the surroundings.

Hereinafter, with reference to the accompanying drawings the configuration and operation of the present invention in detail as follows.

1 is a view showing the installation of the cross-sectional enlarged reinforcing reinforcement device of the present invention in a reinforced concrete structure, the pier (3) and pier supporting the slab (2) of the bridge (1) of reinforced concrete structure (A) As previously designed, the insertion groove 12 for installing the H-beam 11 and the vertical reinforcing bar 15 on the bridge support 4 on the bridge 3 made of the bridge support 4, which is the basis of 3). After forming at regular intervals, the H-beam 11 is inserted into the insertion groove 12 and installed in the insertion groove 12, and then the vertical reinforcing bar 15 is disposed between the H-beams 11 at regular intervals. Install a horizontal reinforcing bar 14 installed in the circumferential direction of the piers 3, and install it by welding a penetrating or reinforcing bar stud on the abdomen of the H-beam 11, The strand conductor guide device 20 is installed on the outer flange of the H-beam 11 and formed in the strand conductor guide device 20. The strands 13 installed in each circumferential direction are installed at the circumferential direction at regular intervals on the outer circumferential surface of the piers 3 while allowing the strands 13 to be mounted on the grooves 23. Passing the stranded wire 13 through the stranded wire passing groove 31 formed in the opposite direction by the fixing device 30 and fixing the stranded wire 13 by using the anchorage 31 to install the cross-sectional enlargement maintenance reinforcement device 10. And after connecting the strand wire tension hydraulic jack 40 to the strand wire 13 installed on one side of the bidirectional strand wire fixing device 30 by introducing a prestress to the strand wire and fixed and fixed, the outer surface of the cross-sectional maintenance repair device 10 constant After the formwork is installed to maintain the thickness and the concrete is poured, the formwork is demolded and the surface and surroundings are cleaned up and the prestress is introduced to the enlarged section to support the load of the reinforced concrete structure. It is a reinforcement construction method to increase the intelligence.

The H-beam 11 is installed on one side of the two flanges in contact with the outer circumferential surface of the piers (3), the other side of the flange is exposed to the outside to install the strand conductor guide device 20, H The abdomen of the beam (11) is used to install horizontal reinforcing bars (14) which are installed at regular intervals on the entire length of the bridge (3) over the outer peripheral surface of the bridge (3), the perforated holes in the abdomen to install through Either or welding the studs on the abdomen and welding the rebar on the studs.

The H-shaped beam 11 thus installed resists the compressive force acting on the bridge 1 while acting as a vertical reinforcing bar while introducing a compressive force, ie prestress, into the cross section by the compressive force introduced into the strand 13.

FIG. 2 is a view showing a portion “A” of FIG. 1, in which an H-beam 11 is installed, a vertical rebar 15 is disposed, and a horizontal rebar 14 is bridged 3 of a bridge 1. While installing in the longitudinal direction on the outer circumferential surface of the H-shaped beam 11, the penetration or studs are installed in the abdomen to be welded and installed, and the entire outer circumferential surface of the piers 3 at regular intervals on the outer flange of the H-shaped beam 11 The strand wire guide device 20 is installed over the length, and the strand wire 13 is installed between the grooves 23.

3 and 4 are views showing the installation of the cross-sectional enlargement reinforcement reinforcing device in the pier and the fixed anchoring of the stranded wire, which is installed on the outer circumferential surface of the pier (3) to be installed over the entire length of the pier (3). do.

The stranded wire 13, which is installed at regular intervals over the entire length of the outer flange of the H-shaped beam 11, is manufactured in a "d" shape as shown in FIG. After passing one end of the (13) through the strand wire passing groove 33, it is fixed by using the anchoring hole 31, the strand wire 13 in the strand wire passing groove 33 provided on the opposite side of the strand wire (13). After passing through it, it is fixed using the fixing tool 31 so as to be fixed to the strand 13 in opposite directions. The stranded wire 13 of one side thus installed is connected to the stranded tensile hydraulic jack 40 to introduce prestress to the stranded wire, and fix the anchoring device using the anchorage 31.

5 is a view showing the strand guide device of the present invention as being installed at a predetermined distance in the longitudinal direction on the H-beam 11 installed on the outer peripheral surface of the piers (3) "H" shaped H-beam installation groove ( 24) and the support 22 provided on both sides of the H-beam mounting groove 24, the H-beam mounting groove 24 is fitted to the outer flange of the H-beam 11, the support 22 is a flange Both sides of the support is fixed and installed, the upper portion of the H-shaped beam installation groove 24, the separation plate 21 is installed on both sides so that the center groove 23 is formed. In this way, the groove 23 is inserted so that the strand 13 is inserted so that it does not deviate outward when the prestress is introduced into the strand 13, and the strands 13 into which the prestress is introduced firmly form the H-beam. This is to apply pressure to the cross section of the pier so that the prestress can be accurately introduced into the cross section.

Figure 6 is a view showing a bidirectional strand wire fixing device of the present invention, the description of this drawing has been mentioned in the description of Figures 3 and 4, the description is omitted in this figure.

Figure 7 is a view showing a unit assembly constituting the strand guide pipe of the present invention, having a body portion 53 of the cylindrical body, the insertion groove 54 is formed in the center and the strand wire 13 in the center of the front portion It is as a unit assembly 51 provided with the spherical convex part 52 in which the through hole 55 through which ()) is penetrated is provided. When the unit assembly 51 is connected to the spherical convex portion 52 in the insertion groove 54 in succession, a flexible strand guide tube 50 is formed so that the strand strand is narrow even in a place where prestress is introduced into the strand 13. By inserting the strand to the guide tube 50 to the side to introduce the prestress.

8 is a view showing a stranded tension hydraulic jack of the present invention, the stranded wire 13 installed on one side of the bidirectional stranded wire fixing device 30 is inserted into the stranded wire guide tube 50 to be fixed through the stranded wire tensile hydraulic jack 40 After fixing the stranded wire 13 to the head 63 and injecting hydraulic pressure into the tensioned hydraulic inlet 62 installed in the tensioned wire tension hydraulic jack 40 to introduce prestress into the stranded wire 13 and fix and fix the hydraulic inlet for dismantling. The hydraulic pressure is gradually released while injecting hydraulic pressure into the 61.

The present invention relates to a method of reinforcing and reinforcing a structure by expanding a cross section that can improve the performance of the structure by reinforcing the load bearing capacity of the structure by introducing a prestress by expanding a cross section of a structure such as a pier, which is a reinforced concrete structure. By introducing prestress to the enlarged cross section, there is no need to enlarge the cross section more than necessary, thus reducing construction cost by reducing the amount of rebar and concrete used, and there is no need to install anchors for cross section expansion around the piers. It does not damage the structure and minimizes the enlarged cross section, so it can be effectively applied to the structure of the bridge and the lower space in the downtown area. In addition, when the present invention is applied to the lower structure of the bridge, it is possible to secure the resistance against damage factors from the earthquake, etc. through the improvement of the strength performance, so that the construction is easy to apply to the seismic reinforcement purpose and increase or decrease the steel It is possible to control the reinforcing performance through the efficient and excellent reinforcing effect that can expect a certain improvement in performance.

Claims (4)

In the device for the reinforcement of the circumference of the bridge to enhance the load bearing capacity of the reinforced concrete structure, Form an insertion groove with a certain distance and depth to insert the H-beam and vertical reinforcing bar into the bridge support of the bridge, and install one flange of the H-beam in contact with the pier surface at regular intervals around the bridge. Is inserted into the insertion groove, the vertical reinforcing bars having a predetermined interval between the H-shaped beams are arranged, the lower end is inserted into the insertion groove, the pier at regular intervals over the outer peripheral surface of the abdomen and piers of the H-beams Horizontal reinforcing bars are installed over the entire length of the reinforcement, and the strand guide device is fixedly installed at regular intervals in the longitudinal direction on the other flange of the H-beam. Install the stranded wires in the anchorages formed on opposite sides to install the cross-sectional reinforcement reinforcement device, and settle in the bidirectional stranded ship fixing device. The prestress is introduced into the enlarged cross section, which is characterized by connecting the strand on one side to the pull line tensile hydraulic jack to introduce prestress to the strand, then installing the formwork and pouring concrete to introduce the prestress to the enlarged cross section around the piers. Extended section reinforcement device for reinforcing bearing capacity of reinforced concrete structures. The method of claim 1, The strand guide device is installed at a predetermined distance in the longitudinal direction to the H-beams installed on the outer peripheral surface of the piers, consisting of the support is installed on both sides of the "c" shaped H-shaped beam installation grooves and H-shaped beam installation grooves The H-beam mounting groove is inserted into the outer flange of the H-beam, and the support is fixed by supporting both sides of the flange, and the separation plate is installed on both sides so that a groove is formed in the middle of the H-beam mounting groove. When the prestress is introduced by inserting the strand into the formed groove, the strand does not deviate outward and the prestressed strand is firmly pressurized by the H-beam to the cross section of the pier to ensure the prestress on the cross section. Reinforced concrete structure by introducing prestress to the enlarged cross section, characterized in that it can be introduced Cross-sectional close-up rehabilitation device for bearing reinforcement. The method of claim 1, The bidirectional strand anchoring device is manufactured in a "d" shape, and the one side end of the stranded ship, which is installed to one side, passes through the strand line passing groove, and then is fixed by using a fixing unit, and the strand line passing groove of the other end is installed on the opposite side. After passing through the stranded wire, the anchorage can be settled using the anchorage so that the stranded wire can be settled in opposite directions. The stranded hydraulic jack inserts the stranded wire into the stranded guide tube to penetrate the tensioned hydraulic jack to fix the stranded wire to the fixing head. And injecting hydraulic pressure into the tension hydraulic inlet installed in the tension hydraulic jack to introduce prestress into the strand, and fix and fix it, and then gradually release the hydraulic pressure while injecting hydraulic pressure into the dismantling hydraulic inlet to introduce prestress into the strand. Reinforced concrete by introducing prestressed sections Cross-sectional close-up rehabilitation device for bearing reinforcement in the tree structure. The method of claim 1, Horizontal reinforcing bars installed in the abdomen of the H-beams are provided through the horizontal reinforcing bars after drilling holes at a predetermined interval in the abdomen of the H-beams, or studs are installed in the abdomen of the H-beams and the horizontal reinforcement is installed. Sectional expansion and reinforcement for reinforcing the bearing capacity of reinforced concrete structures by introducing prestresses to the enlarged cross section, characterized in that the reinforcement is carried out over the outer circumferential surface of the piers by welding the reinforcing bars.