KR101840822B1 - Earthquake resistant reinforcement apparatus for bridge using prestress - Google Patents

Abstract

The present invention relates to a seismic reinforcement apparatus for a bridge using prestress. According to the present invention, a first connection part is disposed on an abutment and an upper surface of a bridge, both ends of a steel pipe part is connected thereto, and a second connection part is installed in a lower side of the first connection part, and is moved in abutment and bridge directions, respectively, by first and second pressing parts. Accordingly, the steel pipe part is pulled in the abutment and bridge directions to be prestressed and, at the same time, a compressive force with respect to the abutment and a pier is generated, thus distributing seismic load concentrated on a pier, where a fixed end bearing is installed in a conventional method, to surrounding abutments and the overall bridge as all lower structures of the bridge are integrated, thereby being able to prevent the bridge from being damaged by an earthquake. Moreover, as only the compressive force in accordance with the prestress of the steel pipe part is applied to the abutment and the pier, the abutment and the pier are not broken by tensile and shear forces; a compressive strength is determined when a horizontal displacement of the steel pipe part due to climatic change, and a fluid to supply a constant pressing force towards the abutment and the pier is filled in the second pressing part, thereby being able to always apply an identical compressive force of the steel pipe part to the abutment and the bridge.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an eccentric reinforcement for a bridge using a prestress,

The disclosed contents relate to an earthquake-proof reinforcement of an earthquake-proof bridge that is installed at an alternation of a bridge and at a pier and prevents collapse and breakage of the bridge when an earthquake occurs.

In general, bridges are structures that are constructed for the purpose of solving this problem when traffic or waterways are difficult to pass due to rivers and terrain.

These crampons consist of superstructures such as decks, floors, molds, bracing, interlocks, railing, and substructures such as alternating and piercing. The abutment in the substructure is located at both ends of the bridge, so that the vertical and horizontal loads from the top are transmitted to the ground and at the same time resist the earth pressure from the rear.

The bridge supports the upper structure of the bridge between the alternations and allows the load of the upper structure and the weight of the bridge to be transmitted to the foundation ground. The pier and the alternation are connected to the upper structure by a fixed stage support or a movable stage support. The fixed stage support allows the lower structure and the upper structure to be integrally connected to each other. The movable stage support is a structure in which the upper structure is seated on the upper structure .

On the other hand, most of existing bridges are not designed to withstand seismic earthquakes. In case of an earthquake, the horizontal load caused by the horizontal displacement of the upper structure is supported by the fixed stage support. Most are designed. However, in this case, since the earthquake load is concentrated on the bridge pier where the fixed end bearing is installed, there is a serious problem that the damage to the facilities and human life due to the breakage of the bridge pier,

1. Korean Patent Registration No. 10-1002232 (December 13, 2010) 2. Korean Utility Model Registration No. 20-0307518 (2003.04.04) 3. Korean Patent Registration No. 10-0666704 (2007.03.03)

The first connecting portion is disposed on the upper surface of the bridge and the both ends of the steel pipe portion are connected to the first connecting portion and the second connecting portion is provided on the lower side of the first connecting portion so that the second connecting portion is connected to the first pressing portion and the second pressing portion To move the steel pipe alternately and in the direction of the bridge so as to be subjected to the prestressing process and at the same time to generate a compressive force against the alternating and piercing angles.

In one embodiment, the alternate and bridged top surfaces of the bridges are disposed at opposite points of the bridges, one side of which is seated on an alternating, A steel pipe portion which is positioned between the bridge and the pier and is fixed to the side of the first connection portion where the opposite ends of the steel pipe portion are opposed to each other; A second connecting portion having a front surface and a rear front plate fixed to the upper surface of the front plate and the rear plate, and a second connecting portion having a front plate and a rear plate, the first connecting portion being located on one side of the first connecting portion, A plurality of first threaded rods which are inserted through the first threaded rods and threadedly formed on the outer periphery of the first threaded rods, A first pressing plate disposed in close contact with a side surface of the pier and causing a compressive force to be generated on the side of the pier and the pier when the second connecting portion and the first connecting portion are horizontally moved in the alternating and piercing directions, A first adjusting nut which is in contact with one surface of the front diaphragm and is in close contact with one surface and the other surface of the rear diaphragm to move the second connecting portion along the first screw rod toward or away from the alternating and piercing angle, And a second pressing portion which is located on the other side of the first connecting portion among the first connecting portions arranged to face each other and which is horizontally penetrated through the front and rear diaphragms, A second screw rod having a cylinder hole and a nozzle hole continuously formed therethrough, and a plurality of insertion grooves formed in a plate shape, A second presser plate for movably inserting and fixing the one end of the second screw rod therein and being disposed in close contact with the side surface of the alternating pier and the pier and for generating a compressive force at the side of the pier, And a second threaded portion that is threadedly engaged with the second threaded portion and is in contact with one surface of the front partition plate and one surface and the other surface of the rear partition plate so that the second connection portion is close to the alternation and pier And the other end is supported by the second pressing plate, so that a horizontal displacement occurs in the steel pipe portion due to a change in temperature, and the second adjusting nut is supported by the second adjusting nut, A first spring for causing a compression force of the second pressurizing plate to be primarily compensated for the alternating and pivoting angles when the first and second pressure plates are in contact with each other, And a second pressing portion provided in the insertion groove and having a compressive force compensating means for secondarily compensating a compressive force of the second pressurizing plate with respect to the alternating and piercing angles when a horizontal displacement is generated in the steel pipe portion due to a temperature change, And describes a seismic retrofitting apparatus for a bridge using a prestressing method.

In another embodiment, the alternate embodiment of the bridge is disposed at opposite points of the upper surface of the pier, and the lower surface of the bridge is seated on the upper and lower portions of the pier, A steel pipe portion which is positioned between the bridge and the pier and which is fixed to the first connection portion side where both ends of the steel pipe portion face each other; A second connecting portion fixed to an upper surface thereof and having a front diaphragm and a rear diaphragm, and a second connecting portion located in the first connecting portion disposed opposite to the front diaphragm and horizontally penetrating the front diaphragm and the rear diaphragm, A plurality of first threaded rods formed with threads and formed in a plate shape and fixed to one ends of the plurality of first threaded rods and closely disposed on the sides of the alternating and piercing rods A first pressing plate for generating a compressive force on the side of the alternating and piercing holes when the first and second connecting portions and the first connecting portion are horizontally moved in the alternating and piercing directions, And a first pressing portion provided with a first adjusting nut which is in close contact with one surface and the other surface of the rear partition so as to move the second connection portion along the first breaking bar toward or away from the pivot and pierce, And describes a seismic retrofitting apparatus for a bridge using a prestressing method.

In another embodiment, the alternate embodiment of the bridge is disposed at opposite points of the upper and lower surfaces of the bridge, the lower surface of which is seated on the upper and lower portions of the bridge, A steel pipe portion which is positioned between the bridge and the pier and is fixed to the side of the first connection portion where the opposite ends of the steel pipe portion are opposed to each other; A second connecting portion having a front face and a rear front plate fixed to the front face and the rear face, and a second connecting portion having a front face and a rear front face fixed to the front face and the rear face, respectively, A second screw rod having a cylinder hole and a nozzle hole continuously formed therein, and a plate shape, and a plurality of insertion grooves are formed to protrude A plurality of second threaded rods are movably inserted and fixed within the first and second threaded rods, and the second and third threaded rods are disposed in close contact with the alternate and pierced sides, and alternately when the second and third connecting portions are horizontally moved, 2 pressing plate, and a second screw thread, which is screwed to the second screw thread, is in contact with one surface of the front diaphragm, and is in contact with one surface and the other surface of the rear diaphragm, A second adjusting nut which is supported by the second adjusting nut which is in close contact with the rear diaphragm and whose other end is supported by the second pressing plate so as to move horizontally A first spring for primarily compressing the compression force of the second pressure plate with respect to the alternation and piercing when a displacement is generated, And a compression force compensating means provided in the nozzle hole and the insertion groove for compensating the compressive force of the second pressurizing plate with respect to the alternating and pivoting angles when the horizontal displacement is generated in the steel pipe portion due to a temperature change. The present invention relates to an apparatus for seismic retrofitting of a bridge using a prestressed portion including two pressing portions.

According to the seismic retrofitting apparatus for a bridge using a prestress as described above, the first connecting portion is disposed on the upper surface of the bridge and the bridge, both ends of the steel pipe portion are connected to the first connecting portion, and the second connecting portion is provided on the lower side of the first connecting portion. The second connecting portions are alternately moved in the alternating and bridge directions by the first pressing portion and the second pressing portion so that the steel pipe portions are pulled alternately and in the direction of the bridge to be subjected to the prestressing process while at the same time, As the entire lower structure of the bridge is integrated, there is an excellent effect that the earthquake load concentrated on the bridge piers provided with the fixed end pedestal is dispersed around the entire bridge and the entire bridge, so that the damage of the bridge due to the earthquake can be prevented.

Also, as the pure compressive force is applied to the alternation and pier in accordance with the prestress of the steel pipe, there is an advantage that the alternation and the pier are not damaged by the tensile force and shear force.

The compressive strength is determined in a state in which the horizontal displacement of the steel pipe due to the climatic change is considered and the fluid is filled in the second pressurizing portion so as to provide a constant pressing force to the alternate and pierced sides, There is an advantage that can be applied at all times.

1 is a side view of a seismic retrofitting apparatus for a bridge using a prestress according to an embodiment of the disclosure;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an anti-seismic reinforcing apparatus for a bridge,
FIGS. 3A and 3B are views showing another operation of a seismic retrofitting apparatus for a bridge using a prestress according to an embodiment of the disclosure; FIG.
FIG. 4 is a view illustrating a state of use of an apparatus for reinforcing seismic resistance of a bridge using a prestress according to an embodiment of the present disclosure; FIG.
5 is a schematic view illustrating an installation step of an anti-seismic apparatus for a bridge using a prestress according to an embodiment of the disclosure.
6 is a side view of a seismic retrofitting apparatus of a bridge using a prestress according to another embodiment of the disclosure.
7 is a side view of a seismic retrofitting apparatus for a bridge using a prestress according to another embodiment of the disclosure.

Brief Description of the Drawings The advantages and features of the disclosed subject matter, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It is to be understood, however, that the disclosure is not limited to the embodiments set forth herein, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, But is provided only to fully disclose the scope of the disclosure to those with ordinary skill in the art, and the disclosure is only defined by the scope of the claims. Like numbers refer to like elements throughout.

The detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present disclosure. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present invention. Therefore, the definition should be based on the contents throughout this specification.

Figures 1-5 illustrate one embodiment in accordance with one embodiment of the disclosure. Fig. 1 is a side view, Figs. 2 to 3B are operational diagrams, Fig. 4 is a state diagram of use, and Fig. 5 is a schematic diagram of an installation step.

Hereinafter, the constituent members of the seismic retrofitting apparatus 1 of a bridge using a prestress and the connection relation thereof will be described in detail with reference to Figs. 1 to 5.

First, referring to FIG. 1, the first connection part 100 serves to install a steel pipe part 200 and a second connection part 300 to be described later. These first connection portions 100 are disposed at opposite positions of the upper surface of bridge bridge 600 and bridge bridge 700. At this time, the lower surface of the one side is seated on the alternation 600 and the bridge 700, and is fixed horizontally. And the other side is projected to the outside of the shift 600 and the bridge 700.

In the case of the alternate 600, the first connection part 100 is disposed on both sides of the first connection part 100 and faces the first connection part 100 of the neighboring bridge. In the case of the bridge pier 700, four of the bridge pierces 700 are arranged on the front and rear sides of the bridge 700, respectively, and are opposed to the first connection portion 100 of the bridge 600 or the bridge 700 adjacent to each other.

In addition, an elongated hole 110 is formed in a lower surface of the first connection part 100. The slot 110 serves to allow horizontal displacement of the steel pipe. That is, the first anchor 120 inserted into the alternate 600 and the pierced hole 700 is inserted into the long hole 110. When the steel pipe part 200 is displaced in the horizontal direction during the prestressing and the temperature changes, (200) can be displaced horizontally by the length of the slot (110).

Next, the steel pipe section 200 is positioned between the shift 600 and the bridge pier 700, or between the bridge pier 700 and the bridge pier 700. The steel pipe section 200 is subjected to a prestressing process so that the compressive force is transmitted to the alternating 600 and the bridge 700. In addition, the shift 600 and the bridge 700, that is, the lower structures of the bridge are integrated, thereby connecting the earthquake load to the shift 600 and the bridge 700 when the earthquake occurs.

The steel pipe section 200 can be selectively used as a circular beam, a square beam, and an H-beam. Both ends thereof are fixedly connected by a second anchor 210 to the side of the first connection part 100 disposed opposite to each other.

In addition, since the steel pipe section 200 is made of metal, the displacement in the horizontal direction can be generated according to the temperature change. In other words, it can be stretched by high temperature during the summer season and stretched by low temperature during the winter season. This may be an important consideration in that a certain pressure must be applied in the direction of the alternating 600 and pier 700 by the prestressed steel pipe part 200. To this end, a first spring 540 and a compression force compensating unit 550 are provided on the side of the second pressing unit 500 to be described later, which will be described later in detail.

Next, the upper surface of the second connection part 300 is fixed to the lower surface of the other side of the first connection part 100 by the third anchor 330. The second connection part 300 is moved by a pressing part to be described later, and functions to allow the steel pipe part 200 to be subjected to a prestressing process. The second connecting portion 300 is provided with a front partition 310 and a rear partition 320.

Next, referring to FIG. 2, the first pressing portion 400 is positioned on the first connecting portion 100 side of one of the first connecting portions 100 disposed opposite to each other. The first pressing part 400 is pulled in the direction of the alternating 600 and the bridge 700 by the horizontal movement of the second connecting part 300 and the first connecting part 100 according to whether the first pressing part 400 is operated or not Prestressed, and at the same time serves to generate compressive forces on alternating 600 and pier 700. The first pressing portion 400 is passed through the front partition plate 310 and the rear partition plate 320 of the second connection portion 300 and one end of the first pressing portion 400 is in close contact with the sides of the alternation 600 and the bridge pillar 700.

The first pressing portion 400 includes a plurality of first screw rods 410 horizontally disposed on the front and rear plates 310 and 320 and formed with threads on the outer circumference thereof, A plurality of first screw rods 410 are fixed to one side and are closely disposed on the sides of the alternation 600 and the pier 700 so that the second connection portion 300 and the first connection portion 100 are alternately arranged A first pressing plate 420 that is formed on the sides of the pivot 600 and the pier 700 to generate a compressive force when horizontally moved in the direction of the first pivot shaft 700 and the first pivot shaft 410, The second connection part 300 is moved along the first screw rod 410 to the shift 600 and the bridge 700 and the second connection part 300 moves along the first screw rod 410. In other words, A first adjusting nut 430 for moving the first adjusting nut 430 is provided.

When the first adjusting nut 430 is rotated on the front side of the front diaphragm 310 and the rear diaphragm 320 (in the direction of the steel pipe 200), the second connecting portion 300 is rotated alternately along the first screw rod 410 600 and the bridge pier 700, and the steel pipe part 200 is pulled and prestressed. At this time, the first adjusting nut 430 in the rear side of the front diaphragm 310 and the rear diaphragm 320 (in the direction of the alternate 600 and 100 pillar 700) Thereby preventing loosening of the sheet. At the same time, the first connection part 100 is moved along the slot 110, and the first pressing plate 420 is pressed against the sides of the alternate 600 and the bridge 700, thereby applying a compressive force.

At this time, the compression force of the first pressing plate 420 with respect to the shift 600 and the bridge 700 generated by the first adjustment nut 430 is determined by considering the horizontal displacement of the steel pipe section 200 according to the temperature change . That is, the prestressing force applied to the steel pipe section 200 is calculated as α (T 1 - T 2) AE when the temperature at the time of installation is T 1 and the minimum temperature of the winter is T 2, where α is the coefficient of linear expansion of the steel pipe section 200 A is the cross-sectional area of the steel pipe section 200, and E is the elastic modulus of the steel pipe section 200.

Next, referring to FIGS. 3A and 3B, the second pressing portion 500 is positioned on the other side of the first connecting portion 100 among the first connecting portions 100 disposed to face each other. The second pressing portion 500 is rotated by the horizontal movement of the second connecting portion 300 and the first connecting portion 100 according to whether the first pressing portion 400 is operated or not, (600) and bridge columns (700) to be subjected to a prestressing process so as to generate compressive forces for the alternation (600) and bridge columns (700). Also, when the horizontal displacement is generated in the steel pipe section 200 due to the temperature change, the compressive force of the second pressure plate 520 relative to the alternation 600 and the bridge column 700 is also compensated. The second pressing portion 500 is passed through the front partition plate 310 and the rear partition plate 320 of the second connection portion 300 and one end of the second pressing portion 500 is in close contact with the sides of the alternation 600 and the bridge pillar 700.

The second pressing portion 500 is horizontally inserted into the front partition plate 310 and the rear partition plate 320. The second pressing portion 500 is formed with a thread on the outer periphery of the front partition plate 310 and the rear partition plate 320. A cylinder hole 511 and a nozzle hole 512 And a plurality of insertion grooves 521 are formed in a plate shape so that one end of the plurality of second screw rods 510 is movably inserted and fixed in the inside of the second screw rods 510, (600) and the bridge pierce (700), and the second pressurizing part (600) and the second piercing part (700) The plate 520 and the second threaded rod 510 are screwed to one side of the front diaphragm 310 so as to be in close contact with one side and the other side of the rear diaphragm 320, A second adjustment nut 53 (not shown) that moves toward or away from the alternating 600 and pier 700 along the second twisting rod 510 And the other end is supported by the second pressure plate 520 so that the horizontal displacement of the steel pipe part 200 due to the temperature change can be suppressed by the second adjusting nut 530, A first spring 540 for primarily compensating for the compressive force of the second pressure plate 520 relative to the alternating 600 and pierced holes 700 when the cylinder 511, When the horizontal displacement is generated in the steel pipe section 200 due to the temperature change, the compression force of the second pressure plate 520 with respect to the shift pivot 600 and the pierced hole 700 is secondarily compensated A compression force compensating means is provided.

The second pressing portion 500 is rotated by the horizontal movement of the second connecting portion 300 and the first connecting portion 100 in the same manner as the first pressing portion 400, (700) direction to be prestressed while at the same time causing a compressive force to be generated for alternating 600 and pierced angle 700. Therefore, it can be deduced from the description of the first pressing portion 400 described above, so that redundant description will be omitted.

The above described compressive force compensating means includes a cap 551 for closing the end of the cylinder hole 511, a moving plate 552 for moving in the cylinder hole 511, a cap 551 and a moving plate 552 A second spring 553 which is provided on the upper end of the moving plate 552 and is contracted and relaxed in accordance with the moving direction of the moving plate 552 and a second spring 553 which is filled in the cylinder hole 511, The position of the moving plate 552 is moved so that the spring is compressed or relaxed when the horizontal displacement is generated in the first pressing plate 200 to compensate the pressing force of the second pressing plate 520 with respect to the shift 600 and the pierced hole 700 And a fluid 554 that is phase-changed from a liquid state to a solid state upon occurrence of vibration.

As with the first pressing portion 400 described above, the second pressing portion 500 causes the pressing portion to be subjected to the prestressing process using the second adjusting screw, thereby applying a compressive force to the alternating 600 and the elevation angle.

However, when the steel pipe section 200 is horizontally displaced due to a change in temperature, it operates differently from the first pressing section 400. That is, referring to FIG. 3A, tensile of the steel pipe section 200 is generated during the summer season. At this time, the second threaded rod 510 is moved inward in the insertion groove 521 of the second pressure plate 520, and the first spring 540 is compressed. At the same time, the second spring 553 is also compressed as the fluid 554 pushes the moving plate 552 toward the cap 551. At this time, the first anchor 120 is moved along the slot 110 in the first connection part 100.

Referring to FIG. 3B, shrinkage of the steel pipe section 200 occurs during the winter season. At this time, the second threaded rod 510 is moved outward in the insertion groove 521 of the second pressure plate 520, and the first spring 540 is resiliently restored. At the same time, the second spring 553 is resiliently restored and the moving plate 552 is pushed in the direction of the alternating 600 and the pierce 700. At this time, the first anchor 120 is moved along the slot 110 in the first connection part 100.

The compression unit 550 is not provided in the first pressing unit 400 provided in the second connection unit 300 of the second connection unit 300 included in the both-side steel pipe unit 200, The compressive force compensating means 550 is provided in the second pressurizing unit 500 provided in the first and second compressing units 300 and 300 so that the compressive force due to the horizontal displacement of the steel pipe unit 200 due to the temperature change can be compensated.

Referring to FIG. 4, in a seismic retrofitting apparatus 1 for a bridge using a prestress, a first pressing portion 400 and a second pressing portion 500 are provided on both sides of one steel pipe portion 200, respectively. However, both sides may be provided with only the first pressing part 400 or only the second pressing part 500.

5, the seismic retrofitting apparatus 1 for a bridge using a prestress is installed in a bridge by the following steps.

First, a workbench 800 is installed in a work zone of an alternation 600 and a bridge 700 and a first connection 100 is installed on a bridge 600 and a bridge 700 using a workbench 800. At this time, the first connection part 100 is temporarily fixed and installed in the order from the center of the entire bridge to the outside.

Then, both ends of the steel pipe part 200 are fixed to the first side connecting parts 100 on both sides. The second connection portion 300 having the first pressing portion 400 and the second pressing portion 500 is installed below the first connection portion 100.

Then, the steel pipe portion 200 is subjected to the pre-stress treatment by using the first adjusting screw of the first pressing portion 400 and the second adjusting screw of the second pressing portion 500, To transfer the compressive force to alternating 600 and pier 700. At this time, the prestress of the steel pipe section 200 is determined in consideration of the horizontal displacement due to the temperature change.

6 is a side view of an anti-seismic apparatus of a bridge using a prestress according to another embodiment of the disclosure. It is noted that the same reference numerals are used for the same components as those of the seismic retrofitting apparatus 1 of a bridge using a prestress according to an embodiment of the present disclosure.

The prestressed bridge seismic retrofitting apparatus 1 'according to another embodiment of the present disclosure is disposed at opposite positions of the upper surface of the bridge 600 and the bridge pier 700, A first connection part 100 which is seated on the upper part 600 and the bridge 700 so as to be horizontally fixed and the other part is protruded from the outside of the bridge 600 and the bridge 700, A steel pipe part 200 which is positioned between the pier 700 and the bridge pier 700 and is fixed to the first connection part 100 with both ends thereof facing each other; The second connecting portion 300 having the upper surface fixed to the other lower surface of the first connecting portion 100 and the second connecting portion 300 having the front and rear dielectrics 310 and 320, A plurality of through holes horizontally disposed in the front partition plate 310 and the rear partition plate 320, A plurality of first screw rods 410 are fixed to one side of the first screw rods 410 and closely contact the side surfaces of the alternating rods 600 and the piercing rods 700, A first pressing plate 420 for generating a compressive force on the sides of the alternating 600 and the bridge 700 when the first connecting unit 100 is horizontally moved in the direction of the alternate 600 and the bridge 700, The second connection part 300 is screwed to the first screw rod 410 and is in contact with one surface of the front partition plate 310 and the other surface of the rear partition plate 320, 1 includes a first pressing portion 400 having a first adjusting nut 430 that moves along the threaded rod 410 to move toward or away from the alternating 600 and pierced 700. [

The first embodiment of the seismic retrofitting apparatus 1 'of a bridge using a prestressing method according to the present invention differs from the first embodiment only in that a first pressing portion 400 is provided in each of the first connecting portions 100 disposed opposite to each other. The configuration and the connection relationship are similar to the seismic retrofitting apparatus 1 'of a bridge using a prestress according to an embodiment of the present disclosure, so that the description will be omitted for the sake of simplicity of description. do.

7 is a side view of a seismic retrofitting apparatus for a bridge using a prestress according to another embodiment of the disclosure. It is noted that the same reference numerals are used for the same components as those of the seismic retrofitting apparatus 1 of a bridge using a prestress according to an embodiment of the present disclosure.

A prestressed bridge seismic retrofitting apparatus 1 "according to another embodiment of the present disclosure is disposed at opposite positions of the upper surface of the bridge 600 and the bridge pier 700, A first connection part 100 which is seated on the shift 600 and the pier 700 and is fixed to be movable horizontally and the other side is protruded from the outside of the shift 600 and the bridge 700, A steel pipe part 200 which is positioned between the bridge pier 700 and the pier 700 and the bridge pier 700 and is fixed to the first connection part 100 with both ends thereof facing each other; A second connection part 300 having a front side plate 310 and a rear side plate 320 fixed to the other side lower surface of the first connection part 100 and a second connection part 300 having the front side plate 310 and the rear side plate 320, And is disposed horizontally through the front partition plate 310 and the rear partition plate 320 and has a thread formed on the outer periphery thereof A second screw bar 510 having a cylinder hole 511 and a nozzle hole 512 formed in a continuous manner and a plurality of insertion grooves 521 protruding from the second screw bar 510, One end of the first connection part 510 is movably inserted and fixed in the interior of the first connection part 100 and is closely disposed on the sides of the alternation 600 and the bridge 700 so that the second connection part 300, And a second pressure plate 520 for generating a compressive force on a side surface of the bridge pier 700 and a second pressure plate 520 screwed to the second screw bar 510 and facing the front surface of the front partition plate 310, And the second connection part 300 is moved along the second screw rod 510 to move toward or away from the shift 600 and the bridge 700 according to the rotation direction, (530), one end of which is supported by the second adjusting nut (530) in close contact with the rear partition (320) When the second pressing plate 520 is supported by the second pressing plate 520 and a horizontal displacement is generated in the steel pipe section 200 due to a temperature change of the second pressing plate 520 relative to the alternate 600 and the pierced hole 700, A nozzle hole 512 and an insertion groove 521. The first spring 540 is provided in the cylinder hole 511, the nozzle hole 512, and the insertion groove 521, A second pressing portion 500 provided with a compression force compensating means 550 for compensating the compressive force of the second pressing plate 520 with respect to the alternation 600 and the pierced hole 700 when displacement occurs, .

The seismic retrofitting apparatus 1 "for a bridge using a prestress according to another embodiment of the present invention differs from the first embodiment only in that a second pressing portion 500 is provided in each of the first connecting portions 100 disposed opposite to each other. The construction and connection relationship of the bridge according to the present invention are similar to those of the apparatus 1 for reinforcing a bridge using a prestress according to an embodiment of the present invention and can be sufficiently deduced from the above description so that redundant description will be omitted for the sake of simplification of the description do.

According to the seismic retrofitting apparatus 1, 1 ', 1 "of the bridge using the above-mentioned prestress, the first connection part 100 is disposed on the bridge 600 and the upper part of the bridge, The second connection part 300 is provided on the lower side of the first connection part 100 and the second connection part 300 is connected to the first connection part 100 by the first connection part 400 and the second connection part 500 To move in alternation 600 and in the direction of the bridge so that the steel pipe section 200 is pulled in alternation 600 and in the direction of the bridge to be prestressed while compressive forces are generated on alternating 600 and bridge 700 As a whole of the lower structure of the bridge is integrated, the seismic load concentrated on the pier 700 having the fixed end pedestal conventionally dispersed is dispersed in the surrounding shift 600 and the entire bridge, so that the damage of the bridge due to the earthquake can be prevented.

As the pure compressive force according to the prestress of the steel pipe section 200 is applied to the alternation 600 and the bridge 700, the alternation 600 and the bridge 700 are not damaged by the tensile force and shear force.

The compressive strength is determined in a state in which the horizontal displacement of the steel pipe section 200 due to the climate change is considered and the fluid pressure is applied to the second pressurizing section 500 so as to provide a constant pressing force toward the alternate 600 and the bridge 700 side The compression force of the steel pipe section 200 with respect to the bridge 600 and the bridge 600 can always be applied equally.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. But is not limited to the example.

1,1 ', 1 ": Seismic retrofit of bridges using prestress
100: first connection part
110: long hole
120: First anchor
200: Steel pipe section
210: second anchor
300: second connection portion
310: front diaphragm
320: rear diaphragm
330: Third anchor
400: first pressing portion
410: No. 1
420: first pressure plate
430: first adjustment nut
500: second pressing portion
510: The second bar
511: Cylinder hole
512: nozzle hole
520: second pressure plate
521: Insertion groove
530: second adjusting nut
540: first spring
550: Compression force compensation means
551: cap
552: Movable plate
553: Second spring
554: Fluid
600: Shift
700: Pier
800: Workbench

Claims (5)

And the other side of which is positioned at the opposite position of the bridge top and the upper surface of the bridge, the lower side of which is seated on the upper part of the alternating and pierced bridge, ;
A steel pipe portion which is positioned between the bridge and the pier or between the pier and the pier, and is fixedly connected to the first connecting portion side with both ends thereof facing each other;
A second connection portion having an upper surface fixed to the other lower surface of the first connection portion and having a front partition and a rear partition;
A plurality of first screw rods disposed on the side of the first connecting portion on one side of the first connecting portions facing each other and horizontally penetratingly disposed on the front and rear diaphragms and formed with threads on the outer periphery thereof; A plurality of first threaded rods fixed at one end thereof and disposed closely to the alternating and piercing side surfaces, and alternately when the second connecting portion and the first connecting portion are horizontally moved in the alternating and piercing directions, And the second connecting portion is in contact with one surface of the rear partition so as to be in contact with the other surface of the rear partition so that the second connection portion is moved along the first breaking bar A first pressing portion provided with a first adjusting nut which moves toward or away from the alternating and piercing angles; And
The first and second connection portions being located on the other side of the first connection portion and horizontally penetrating the front and rear diaphragms and forming a thread on the outer periphery of the first and second connection portions, A second threaded rod formed in a plate shape and having a plurality of insertion grooves protruding therefrom so that one end of the plurality of second threaded rods is movably inserted and fixed inside the first threaded rod, A second pressing plate for causing a compressive force to be generated on the side of the piercing hole when the first connecting part is horizontally moved, and a second pressing plate which is screwed to the second breaking bar and rides on one surface of the front diaphragm, And the second connecting portion is moved along the second threaded rod in the direction of rotation so that the second connecting portion moves closer to or away from the piercing angle And a second adjusting nut which is supported by the second adjusting nut which is in close contact with the rear diaphragm and whose other end is supported by the second pressing plate so that when the horizontal displacement is generated in the steel pipe section due to a temperature change, A first spring which is provided in the cylinder hole, the nozzle hole, and the insertion groove, and which is provided in the steel pipe section when a horizontal displacement is generated in the steel pipe section due to a temperature change; And a second pressing portion provided with a compression force compensating means for secondarily compensating the compressing force of the second pressurizing plate with respect to the alternating and piercing angles.
And the other side of which is positioned at the opposite position of the bridge top and the upper surface of the bridge, the lower side of which is seated on the upper part of the alternating and pierced bridge, ;
A steel pipe portion which is positioned between the bridge and the pier or between the pier and the pier, and is fixedly connected to the first connecting portion side with both ends thereof facing each other;
A second connection portion having an upper surface fixed to the other lower surface of the first connection portion and having a front partition and a rear partition; And
A plurality of first screw rods disposed in the first connecting portion disposed facing each other and disposed horizontally through the front and rear diaphragms and formed with threads on the outer periphery thereof, A first pressing plate for fixing one end of the rod and being disposed in close contact with a side surface of the bridge and the pier and generating a compressive force on the side of the bridge and the pier when the second connection portion and the first connection portion are horizontally moved in the alternating and piercing directions, And the second connecting part is closely contacted with one surface of the rear partition and is in contact with the other surface of the rear partition so that the second connection part is moved along the first breaking bar to the alternating and piercing angle, And a first pressing part provided with a first adjusting nut for moving the first adjusting nut.
And the other side of which is positioned at the opposite position of the bridge top and the upper surface of the bridge, the lower side of which is seated on the upper part of the alternating and pierced bridge, ;
A steel pipe portion which is positioned between the bridge and the pier or between the pier and the pier, and is fixedly connected to the first connecting portion side with both ends thereof facing each other;
A second connection portion having an upper surface fixed to the other lower surface of the first connection portion and having a front partition and a rear partition; And
A second screw rod which is disposed in the first connection portion disposed facing each other and which is horizontally penetrated through the front and rear diaphragms and has a thread formed on the outer periphery thereof and has a cylinder hole and a nozzle hole continuously penetrated therein, And a plurality of insertion grooves are formed in a protruding shape so that one ends of the plurality of second screw rods are movably inserted and fixed in the first and second screw rods, And a second pressing plate which is screwed to the second threaded bar and which is in contact with one surface of the front diaphragm and is in close contact with the other surface of the rear diaphragm, A second adjusting nut for moving the second connecting portion close to or away from the piercing hole along the second breaking bar, And the other end of the second pressing plate is supported by the second adjusting nut which is in close contact with the rear diaphragm and the other end is supported by the second pressing plate to cause a horizontal displacement in the steel pipe portion due to a temperature change, And a second spring that is provided in the cylinder hole, the nozzle hole, and the insertion groove to allow the second pressurization with respect to the alternating and piercing angles when a horizontal displacement is generated in the steel pipe portion due to a temperature change, And a second pressing portion provided with a compressing force compensating means for compensating the pressing force of the plate to be secondarily compensated.
The method according to any one of claims 1 to 3,
And a first anchor inserted into the elongated hole and inserted into the elongated hole is inserted and allowed to horizontally displace the steel tubular part according to a temperature change. Seismic strengthening device of bridges.
The compressor according to claim 1 or 3,
A cap for closing an end of the cylinder hole;
A moving plate moved in the cylinder hole;
A second spring provided on the cap and the moving plate and contracted and relaxed according to a moving direction of the moving plate; And
And a second spring for moving the position of the moving plate so that the spring is compressed or relaxed when the horizontal displacement is generated in the steel pipe portion so as to be fluidly filled in the cylinder hole, the nozzle hole and the insertion hole, And a fluid that is phase-changed from a liquid state to a solid state at the time of occurrence of vibrations to compensate the compression force of the plate.

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