KR102553171B1 - Lifter Apparatus For Bridge Upper Part Structure And Anti-seismic Bridge Bearing Replacement System Method Using The Same - Google Patents

Abstract

The present invention provides a simultaneous lifting device for a bridge superstructure capable of raising the upper structure according to a target lifting height while stably maintaining the lifting state of the upper structure after simultaneous lifting of the upper structure of the bridge, a simultaneous lifting device for the upper structure of a bridge, and a bridge support for seismic and seismic isolation reinforcement It relates to a bridge support replacement method using a jack block portion including a steel block disposed on a pier or abutment constituting the bridge, a cylinder disposed at the top of the jack block portion and into which hydraulic pressure is drawn, and an inner circumferential surface of the cylinder It is coupled to and moved up and down by hydraulic pressure drawn into the cylinder, the upper side of the other end not coupled to the cylinder includes a spherical groove, and the upper side of the spherical groove is formed with a piston consisting of a screw thread and the above A rotating hemisphere plate that forms a spherical jaw that comes into contact with the spherical groove of the piston constituting the impression unit and the other end includes a flat friction surface, and a safety nut including a screw thread that engages with a screw thread formed in the piston constituting the impression unit. It consists of a lifting part that controls the lifting part, a friction part formed between the lower part of the upper structure of the bridge and the lifting part, and a lifting control part that controls the lifting part. It is possible to prevent damage to the upper structure due to exceeding the lifting height by maintaining the raised state of the upper structure and recognizing it when the worker reaches the target lifting height at which the worker wants to raise the upper structure by the stone control unit. In addition, When the upper structure is raised, the coupling pin of the piston control unit moves while being guided through the pin groove of the piston control block of the piston control block, so the upper structure can be raised or lowered while maintaining a horizontal state, and the upper structure can be raised or lowered simultaneously. It is possible to know whether the structure is raised or lowered in a horizontal state depending on whether an overload occurs, so that the operator's convenience can be improved. Provides a replacement method for used bridge bearings.

Description

Bridge bearing replacement method using simultaneous lifting device for bridge upper part structure and bridge bearing for seismic and seismic isolation reinforcement {Lifter Apparatus For Bridge Upper Part Structure And Anti-seismic Bridge Bearing Replacement System Method Using The Same}

The present invention provides a bridge superstructure simultaneous lifting device and a bridge superstructure simultaneous lifting device capable of raising the upper structure according to the target lifting height while stably maintaining the lifting state of the upper structure after simultaneous raising of the bridge superstructure, a bridge support for seismic and seismic isolation reinforcement It is about the replacement method of bridge bearings using

Bridges can be largely divided into upper structures and lower structures, and a bridge support is installed between the upper and lower structures to transfer the load of the upper part to the lower part.

The superstructure of the bridge undergoes horizontal displacement in which the length changes horizontally due to temperature, etc., and rotation occurs at the end of the superstructure. The bridge bearing must not only support the vertical load of the superstructure, but also accommodate the horizontal displacement and the rotational displacement.

When a bridge is initially built, the bridge bearings will need to be replaced due to deterioration over time. In order to replace the bridge bearing, several hydraulic jacks are temporarily installed to replace the role of the bridge bearing, and several millimeters are simultaneously raised above the installation height of the bridge bearing to support the vertical load instead of the bridge bearing. do.

(Patent Document 1) KR 10-1812729 B1 Bridge raising system and raising method

However, during the simultaneous lifting of hydraulic jacks, excessive pressure is transmitted to some hydraulic jacks due to a worker's mistake or equipment instability, causing damage to the upper structure by exceeding the target lifting value. In addition, after the completion of the lifting, the hydraulic jack does not properly accommodate the horizontal displacement, resulting in cracks in the upper structure or a dangerous situation in which the entire upper structure slides in the vertical and horizontal directions.

In order to solve the above problems, the bridge support replacement method using the bridge superstructure simultaneous lifting device and the bridge superstructure simultaneous lifting device and the bridge support for seismic and seismic isolation reinforcement according to the present invention to solve the above problems is after lifting the superstructure through a safety nut An object of the present invention is to provide a bridge superstructure simultaneous lifting device capable of maintaining the raised state of the superstructure even when hydraulic pressure is unstable or hydraulic pressure is removed, and a bridge superstructure lifting method using the same.

Another object of the present invention is to form a round on the edge of the upper surface inside the cylinder of the impression unit and the edge of the bottom surface of the piston, so that when the upper structure is raised through the impression unit and the hydraulic pressure is removed during descent, the horizontal force acting on the piston causes the piston to It is to prevent the piston from not descending due to the inclination of the cylinder and damage to the inner circumferential surface of the cylinder.

Another object of the present invention is to make it possible to measure the displacement direction as well as the amount of displacement for the horizontal force of an upper structure in normal times when a displacement recorder is applied.

Another object of the present invention is to prevent damage to the upper structure due to exceeding the lifting height by allowing the piston control unit to recognize when the operator has reached a target lifting height to raise the upper structure.

Another object of the present invention is to check whether the upper structure is lifted in a horizontal state because the piston control coupling pin moves while being guided through the piston control pin groove of the piston control block when the upper structure is raised. During simultaneous lifting and lowering, it is possible to know whether the upper structure is raised in a horizontal state according to whether an overload occurs, thereby increasing operator convenience.

The present invention can maintain the raised state of the upper structure even when the hydraulic pressure is unstable or the hydraulic pressure is removed after the upper structure is raised through the safety nut.

In addition, by forming a round on the edge of the upper surface inside the cylinder of the impression unit and the edge of the bottom surface of the piston, when the upper structure is raised through the impression unit and the hydraulic pressure is removed during descent, the horizontal force acting on the piston causes the piston to tilt. It can prevent the piston from not descending and damage to the inner circumferential surface of the cylinder.

In addition, when the displacement recorder is applied, it is possible to measure the displacement direction as well as the displacement amount for the horizontal force of the upper structure in normal times.

In addition, it is possible to prevent damage to the upper structure due to exceeding the lifting height by recognizing when the operator has reached a target lifting height to raise the upper structure by the piston control unit.

In addition, when the upper structure is raised, since the piston control coupling pin moves while being guided through the piston control pin groove of the piston control block, it can be confirmed whether the upper structure is raised in a horizontal state, and when the upper structure is simultaneously raised and lowered It is a useful invention that can increase the convenience of the operator by knowing whether or not the upper structure is raised in a horizontal state according to whether overload occurs.

1 is a side view showing a simultaneous lifting device for a bridge superstructure according to the present invention.
Figure 2 is a side view showing another embodiment of Figure 1;
Figure 3 (a) is a side view of the piston control unit in the present invention, Figure 3 (b) is a front view of the piston control unit.
Figure 4 (a) is a side view of the friction part in the present invention, Figure 4 (b) is a bottom view of the friction part in the present invention.
Figure 5 is an exploded perspective view of a bridge bearing for seismic or seismic isolation reinforcement in the present invention.
6 is an exploded perspective view showing another embodiment of a bridge bearing for seismic or seismic isolation reinforcement in the present invention.

Hereinafter, looking at the present invention in more detail using the accompanying drawings as follows.

1. impression part

As shown in FIG. 1 , the lifting unit 200 includes a lifting unit 210 , a rotating hemisphere plate 220 , and a safety nut 230 .

First, the lifting unit 210 is disposed on a pier or abutment to form a cylinder 211 into which hydraulic pressure is drawn, and a piston that is coupled to the inner surface of the cylinder 211 and moves up and down by hydraulic pressure drawn into the cylinder 211. (212).

The piston 212 has a structure in which a spherical groove 212a is formed on the other end inserted into the cylinder 211, that is, the upper side, and a screw thread 212b is formed on the side surface of the upper side where the spherical groove 212a is formed. made up of

Here, it is preferable that the upper surface edge of the inside of the cylinder 211 constituting the lifting part 200 and the bottom surface edge of the piston 212 are formed with a round shape R.

Next, the rotating hemisphere plate 220 forms a spherical jaw 221 that comes into contact with the mouth groove 212a formed in the piston 212 constituting the impression unit 210, and the other end of the spherical jaw 221 is It consists of a structure forming a flat friction surface 222.

Next, the safety nut 230 includes a screw thread 231 that engages with the screw thread 212b formed on the piston 212 of the lifting unit 210 described above.

The safety nut 230 is rotated by the user so that it can move upward and downward in the screw 212b of the piston 212 of the impression unit 210.

2. Friction part

The friction part 300 in the present invention is configured to be disposed between the lower part of the upper structure 1c of the bridge 1 and the lifting part 300 disposed on the pier 1a or abutment 1b.

Specifically, the friction part 200 is coupled to the friction cover plate 310 coupled to the lower side of the upper structure 1c of the bridge 1 and the friction cover plate 310, but the other end constitutes the lifting part 200. It consists of a friction material 320 including a friction contact surface 321 that comes into contact with the friction surface 222 formed on the rotating hemisphere plate 220 to do.

Here, the friction cover plate 310 is a steel material for a welded structure and is a horizontal plate 311 coupled to the upper structure 1c of the bridge 1 so that the friction material 320 does not directly contact the upper structure 1c of the bridge 1. ) and a vertical plate 312 formed on the side of the horizontal plate 311.

In addition, the friction material 320 is not particularly limited, but among synthetic resins, polyethylene and polyamide materials among engineering plastics having heat resistance of 100° C. or more, compressive strength of 30 MPa or more, and tensile strength of 10 MPa or more are used.

In particular, as shown in (a) and (b) of FIG. 4, one or more friction material grooves 322 may be formed on the frictional contact surface 321 of the friction material 320, and when there are a plurality of friction material grooves 322 It can be configured to respond to the frictional force required for each bridge 1 by adjusting the surface area of the frictional contact surface 322 by processing concentric circular bands with a certain width into intaglios to adjust the frictional force generated from the surface area.

The shape of the friction material 320 as described above may be formed in various shapes such as a circular shape or a rectangular shape.

3. Impression control unit

The lifting control unit 600 controls the lifting unit 210 of the above-described lifting unit 200 to lift the upper structure 1c of the bridge 1 and can be configured in various forms.

4. Displacement record book

In the present invention, a displacement recording unit 400 may be further included.

As shown in FIG. 1, the displacement recorder 400 is formed to measure the amount of horizontal displacement and the direction of displacement of the upper structure 1c of the bridge 1, and the displacement to the upper side of the pier 1a or abutment 1b A recording unit holder 410 is formed.

The displacement recording unit holder 410 includes a marking means coupling hole 411 on the inside.

In addition, an elastic part 420 inserted into the marking means coupling hole 411 of the displacement recording unit holder 410 is configured.

Also, the marking means 430 coupled to the marking means coupling hole 411 of the displacement recording unit holder 410 and elastically supported by the elastic part 420 is configured.

In addition, the upper structure 1c of the bridge 0 further includes a displacement recording unit upper plate 440 and a recording sheet 450 formed in the displacement recording unit upper plate 440 so that marking can be performed by the marking means 430. can be configured.

In particular, the recording paper 450 may further include a displacement scale 451 to measure the displacement amount and displacement direction of the upper structure 1c.

5. Piston control unit

In the present invention, a piston controller 500 for controlling the lifting height of the upper structure 1c of the bridge 1 may be further included.

In order to configure the piston control unit 500, as shown in FIG. 1, a coupling hole 232 should be further included on the side of the safety nut 230 constituting the lifting unit 200.

In addition, as shown in (a) and (b) of FIG. 3, a piston control block 510 including a piston control pin groove 511 is formed on the side of the cylinder 211 constituting the lifter 200. .

The piston control pin groove 511 of the piston control block 510 may be formed in the form of a hole, or may be formed by a space in which two piston control blocks 511 are spaced apart at regular intervals as shown in the drawing. there is.

In addition, a piston control coupling pin 520 coupled to the aforementioned coupling hole 232 of the safety nut 230 and the piston control pin groove 511 of the piston control block 510 is configured.

The piston control coupling pin 520 is bent at the first pin 521 coupled to the coupling hole 232 of the safety nut 230 and the first pin 521 to form a piston control pin groove of the piston control block 510 It consists of a second pin 522 coupled to 511 and a piston control bolt 523 extending from the second pin 522, and a piston control nut 530 is coupled to the piston control bolt 523. has been

In addition, the outer circumferential side of the cylinder 211 constituting the lifting unit 210 of the lifting unit 200 includes a piston control scale 540 for measuring the height position of the piston control bolt 523.

6. Jack block part

As shown in FIG. 2, the jack block portion 100 includes a steel block 110 further disposed between the pier 1a or abutment 1b constituting the bridge 1 and the lifting portion 200. are doing

Although the steel block 110 is not particularly limited, it is composed of an upper flange 111, a lower flange 112, a vertical member 113, and a web plate 114 as a material of rolled steel for welding structure, each of which can be joined by welding. there is.

In particular, when the steel block 110 is disposed on the piers 1a or abutments 1b constituting the bridge 1, an L-shaped support plate 120 may be further included.

The L-shaped support plate 120 may be installed on the side of the steel block 110, for example, on the side of the abdominal plate 114.

In the present invention, when adding the steel block 100, the lifting unit 210 constituting the lifting part 200 is the top of the jack block part 100, specifically the upper flange 111 constituting the steel block 110 ) is placed in

In addition, a first non-slip portion 111a is further included on the upper side of the steel block 110 constituting the jack block portion 100, and the lower portion of the cylinder 211a constituting the corresponding lifting unit 210 A second non-slip portion 211a may be further included.

One of the first non-slip portion 111a and the second non-slip portion 211a may be formed in the shape of a groove, and the other may be formed in the form of a chin that can be inserted into the groove.

In addition, a displacement recording unit holder 410 may be formed above the jack block unit 100 .

Looking at the lifting method using the simultaneous lifting device for the upper structure of a bridge according to the present invention having the above configuration, the following will be given.

1. Installation step of the simultaneous lifting device for the upper structure of the bridge

In this step, the bridge upper structure simultaneous lifting device 1000 is placed in the lower mold space between the upper structure 1c constituting the bridge 1 and the pier 1a or abutment 1b, the lifting unit 210, the rotating hemisphere plate ( 220), the lifting unit 200 including the safety nut 230, the friction unit 300, and the lifting control unit 600 for controlling the lifting unit 200 to move up and down, and additionally the steel block unit 110 in addition to the mold space. This is a step of installing the jack block portion 100 including a).

The lifting part 200 is installed on the upper part of the pier 1a or abutment 1b, but if the upper surface is uneven, sand is laid on the lower surface or a rubber plate (not shown in the drawing) is installed to load the load. so that it can be evenly transmitted to the piers 1a or abutments 1b.

Then, after installation of the lifting unit 210 to which the safety nut 230 is coupled, installation of the rotating hemisphere plate 220 may be completed.

Looking at the process, the raising unit 210 in a state in which the cylinder 211 and the piston 212 constituting the raising unit 210 are coupled is placed on the upper part of the pier 1a or the abutment 1b to raise the unit 210 ) to complete the installation.

Here, in the present invention, the steel block 100 may be installed between the upper structure 1c constituting the bridge 1 and the pier 1a or the abutment 1b and the lifting unit 200.

The jack block part 100 is installed on the upper part of the pier 1a or abutment 1b, but when the upper surface is uneven, sand is laid on the lower surface of the steel block 110 or a rubber plate (not shown in the drawing) When) etc. are installed so that the load transmitted to the steel block 110 can be evenly transmitted to the pier (1a) or abutment (1b).

Then, the upper flange 111, the lower flange 112, the vertical member 113, and the abdominal plate 114 constituting the steel block 110 are coupled through welding.

In particular, when pushing of the above-described steel block 110 is expected, an L-shaped support plate 120 fixed to the bottom surface of the pier 1a or abutment 1b and the abdominal plate 114 is further installed

When the installation of the steel block 110 is completed as described above, the lifting unit 200 is installed on the upper side of the steel block 110.

Looking at the process, the lifting unit 210 in a state in which the cylinder 211 and the piston 212 constituting the lifting unit 210 are coupled is placed on the upper side of the steel block 110, specifically, on the upper flange 111. Thus, the installation of the impression unit 210 is completed.

Here, the above-described lifting unit 210 disposed on the steel block 110 is configured to further include a first anti-slip portion 111a on the upper side of the steel block 110 to improve the fixing force to the horizontal force, facing this When the second anti-slip part 211a is further formed in the lower part of the cylinder 211 of the lifting unit 210, the second anti-slip part 211a is placed on the first anti-slip part 111a for convenience of construction. In addition, it can be constructed to prevent pushing due to the occurrence of horizontal force.

Then, the spherical jaw 221 constituting the rotating hemisphere plate 220 is brought into contact with the spherical groove 212a formed on the upper surface of the piston 212 of the lifting unit 210 to complete the installation of the lifting unit 220 can do.

When the installation of the lifting part 200 is completed, this step may be completed by installing the friction part 300 .

The friction part 300 attaches the friction cover plate 310 to which the friction material 320 is coupled to the upper structure 1c of the bridge 1.

In particular, before installing the friction part 300, the molded space between the rotating hemisphere plate 220 and the upper structure 1c is measured to calculate whether the pool plate 330 is applied and the number of pool plates 330 is measured. It is possible, if the pool plate 300 needs to be used, after combining the pool plate 330 with the friction cover plate 310, the pool plate 330 is placed in contact with the upper structure 1c. .

Here, the friction cover plate 310 has a structure in which the vertical plate 312 is formed on the side of the horizontal plate 311, so that the friction material 320 does not come into direct contact with the upper structure 1c.

When the installation of the friction unit 300 is completed as described above, the present step may be completed by installing the lifting control unit 600 in the present invention.

The lifting control unit 600 may be configured to simultaneously lift two or more lifting units 200 .

That is, the lifting control unit 600 including a linear variable differential transformer (LVDT) (not shown in the drawing) and a hydraulic distributor (not shown in the drawing) is installed, and the hydraulic hose ( Connected with a cable (not shown in the drawing) and a cable (not shown in the drawing) to control the amount of hydraulic pressure supplied to the lifting unit 200, the displacement is controlled according to the target lifting value of the upper structure 1c, and the plurality of lifting units 200 ) can be raised evenly and simultaneously.

In addition, in the step of installing the simultaneous lifting device for the upper structure of a bridge according to the present invention, a displacement recording unit 400 may be further installed.

The displacement recording unit 400 combines the elastic part 420 and the marking unit 430 into the marking unit coupling hole 411 of the displacement recording unit holder 410, and then couples them to the upper end of the jack block unit 100. The upper structure 1c may be completed by combining the upper plate 440 and the recording paper 450 of the displacement recording unit.

In particular, when the displacement recording unit lower plate 460 is added to the side of the jack block unit 100, the displacement recording unit holder 410 is coupled to the displacement recording unit lower plate 460, and then the corresponding upper structure 1c has the displacement recording unit upper part. The plate 440 and the recording paper 450 may be combined. In this case, the displacement recording unit 400 does not need to be coupled to the upper end of the jack block unit 100, so that the lower plate of the displacement recording unit ( 460), it is possible to manufacture by reducing the size, so it is possible to obtain the effect of reducing the load as well as securing space.

In the displacement recorder 400, when the horizontal displacement of the upper structure 1c occurs in normal times, the marking means 430 is marked on the recording paper 450 so that the amount of horizontal displacement can be visually confirmed, and the displacement direction can also be measured when the displacement occurs. will do

Here, when the recording paper 450 further includes a displacement scale 451, the accuracy of the horizontal displacement amount and displacement direction can be improved.

In addition, in this step, a piston control unit 500 composed of a piston control block 510, a piston control coupling pin 520, and a piston control nut 530 may be further installed.

2. Bridge superstructure lifting stage

This step is a step for lifting the upper structure 1c of the bridge 1 using the simultaneous lifting device 1000 for the upper structure of the bridge in the previous step of installing the simultaneous lifting device for the upper structure of the bridge, and is a step for lifting the upper structure 1c of the bridge 1, The hydraulic pressure is supplied to the plurality of impression units 210 formed in the plurality of impression members 200 through the impression control unit 600 including a differential transformer (not shown) and a hydraulic pressure distributor (not shown) at the same time. It allows the upper structure 1c to be raised simultaneously in several positions.

Looking specifically at the above process, since there is a slight gap between each of the friction parts 300 and the upper structure 1c after the bridge superstructure installation step is completed, the linear variable converter is pulled up to a portion where the measured amount does not fluctuate. The piston 212 of the lifting unit 210 constituting the part 200 is first raised to bring the upper structure 1c and the friction part 300 into close contact, and then the linear variable converter is calibrated.

After that, hydraulic pressure for lifting the upper structure 1c is supplied through the hydraulic distributor by the measurement amount of the linear variable converter of the lifting control unit 600, and the simultaneous lifting is performed by the target lifting height through the plurality of lifting units 200. to complete this step.

In particular, rounds R are formed on the bottom edge of the piston 212 constituting the lifter 200 and the upper edge inside the cylinder 211 .

Therefore, in the process of lifting and lowering the lifting unit 210, horizontal force acts to prevent the piston 212 from being caught in the cylinder 211, as well as preventing damage caused by the corner. be able to get

Here, when the piston controller 500 is installed in the step of installing the simultaneous lifting device for the upper structure of the bridge, the upper structure 1c is raised using the piston controller 500 before the upper structure 1c is raised through the lift controller 600. Height can be limited.

That is, the lifting height can be limited by moving the piston control nut 530 coupled to the piston control bolt 523 of the piston control coupling pin 520 of the above-described piston control unit 500 in the upward and downward directions.

That is, in the piston coupling pin 520 constituting the piston control unit 500, the first pin 521 is coupled to the coupling hole 232 of the safety nut 230, and the second pin 522 is the piston control unit It is configured to be guided to the piston control pin groove 511 of the block 510, and has a structure in which a piston control bolt 523 is formed at one end of the second pin 522.

In addition, a piston control scale 540 is formed on the side surface of the cylinder 211 in the piston control part 500 .

Therefore, when the worker raises the lifting unit 210 after adjusting the position of the piston control nut 530 while checking the piston control scale 540 according to the position where the upper structure 1c is to be lifted, the safety coupled thereto The piston control coupling pin 520 of the piston control unit 500 coupled to the nut 230 and the safety nut 230 is also moved.

At this time, when the piston control nut 530 set by the operator comes into contact with the piston control block 510, the lift control unit 600 detects a change in the amount of load to limit the lift height.

In particular, the piston control coupling pin 520 in the piston control unit 500 is guided by the piston control block 510.

Therefore, when lifting the upper structure 1c of the bridge 1, it is possible to obtain an effect of determining whether or not the lifting work is properly performed in the vertical direction.

3. Step of maintaining the impression of the upper structure of the bridge

In this step, the safety nut 230 constituting the lifting part 200 is installed so that the piston 212 of the lifting unit 210 constituting the lifting part 200 can maintain an elevated state after the bridge superstructure lifting step. This step can be completed by moving to the lowest level so that the lifting unit 210 does not descend due to the weight of the upper structure 1c.

As described above, the simultaneous lifting device 1000 for a bridge upper structure according to the present invention forms a safety nut 230 on the piston 212 of the lifting unit 210 constituting the lifting part 200 to raise the lifting unit 210. By moving the safety nut 230 to the lowest level after lifting the upper structure 1c by the above structure, it is possible to obtain an effect of maintaining the raised state even when the hydraulic pressure is unstable or the hydraulic pressure is removed.

In addition, a round R is formed at the edge of the inner upper surface of the cylinder 211 of the raise unit 210 constituting the lift unit 200 and the edge of the bottom surface of the piston 212 to form an upper portion through the lift unit 210. A phenomenon in which the piston 212 does not descend due to the inclination of the piston 212 due to the horizontal force acting on the piston 212 when the hydraulic pressure is removed when the structure 1c is raised and lowered, and damage to the inner circumferential surface of the cylinder 211 You can get the action effect that can prevent.

In addition, in the case of applying the displacement recorder 400 in the present invention, it is possible to obtain an effect capable of measuring the displacement direction as well as the amount of displacement relative to the horizontal force of the upper structure 1c at normal times.

In addition, in the present invention, when the piston control unit 500 is further applied, the operator recognizes when the target lifting height to raise the upper structure 1c is reached, thereby preventing damage to the upper structure 1c due to exceeding the lifting height It can be prevented.

Moreover, when the upper structure (1c) is raised, since the piston control coupling pin 520 moves while being guided through the piston control pin groove 511 of the piston control block 510, the upper structure (1c) is maintained horizontally. It can be checked whether the upper structure (1c) is raised simultaneously, and whether the upper structure (1c) is raised in a horizontal state can be determined according to whether overload occurs, so that the operator's convenience can be improved. there will be

3. bridge support replacement stage

This step is a step for replacing the bridge bearing 10 after the step of maintaining the impression of the upper structure of the bridge, and will be described in detail as follows.

go. existing bridge support elimination step

Although not shown in detail in the drawing, this step is a step of removing the old bridge bearings coupled to the existing bridge upper structure 1c and the coping portion of the pier 1a or abutment 1b.

To this end, while removing the upper plate and the bearing coupled to the bridge superstructure 1c, it is necessary to block out the existing mortar formed on the coping part of the pier or abutment to remove the lower plate and anchor socket.

At this time, when the existing mortar is blocked out, the reinforcing bars 2 or shear reinforcing bars 3 constituting the coping portion of the pier 1a or the abutment 1b are exposed, but the bridge support for seismic and seismic isolation reinforcement (700 ), the concrete at the location where the anchor socket 14 constituting the bridge bearing 10 is to be placed must be selectively removed so that it is exposed to the bottom of the lowermost reinforcement bar 2 or shear reinforcing bar 3.

In the above, if the shear reinforcing bar (3) is cut due to the previous bridge support installation or replacement during blockout of the existing mortar, it is connected to the previously installed shear reinforcing bar (3) with a steel material having physical properties equal to or greater than the diameter of the cut reinforcing bar. However, as a connection method, it is possible to use a coupler (not shown in the drawing), or to perform a connection of reinforcing bars through welding or overlapping, filling adhesive joint through metal or mortar.

Here, when the reinforcing bars 2 or shear reinforcing bars 3 are not exposed or it is difficult to connect the cut reinforcing bars, the ∩-shaped reinforcing bars (not shown in the drawing) with the anchorage length secured are directed in the direction perpendicular to the bridge axis. It can be connected with a U-shaped bolt (not shown in the drawing) by placing the reinforcement.

me. Support plate arrangement step

This step is for installing the supporting plate 30 on the coping part of the pier 1a or the abutment 1b.

To this end, the support plate 30 is placed on the upper side of the reinforcing bars 2 or shear reinforcing bars 3 reinforced in the coping part of the pier 1a or abutment 1b at the position where the bridge bearing 10 is to be placed.

Here, the support plate 30 in the present invention is one support plate 30 by combining two anchor sockets 14 constituting the bridge support 10 or by anchoring one support plate 30 Since all four places of the socket 14 can be combined, the position must be aligned well. ) should be placed considering that it will be placed in a position to prevent the sliding phenomenon.

all. Support plate fixing step

This step is a step for fixedly coupling the support plate 30 to the reinforcing bar 2 or the shear reinforcing bar 3.

To this end, in this step, as shown in FIG. 4, the supporting support plate 30 is connected using the connecting bracket 70 and the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 60 to the reinforcing bar 2 or shear reinforcing bar 3 ) is connected to

That is, the lower surface of the upper part 71 constituting the connecting bracket 70 is brought into contact with the upper surface of the above-described supporting support plate 30, and the lower surface of the lower part 73 constituting the connecting bracket 70 is in contact with the existing It is placed on the reinforcing bars (2) or shear reinforcing bars (3) selectively exposed in the bridge support removal step.

In addition, the bolt portion 51 of the integral U-shaped bolt 50 is coupled to the U-shaped bolt coupling hole 73a of the lower end 73 constituting the connecting bracket 70, but the integral U-shaped bolt 50 The hooking part 52 formed in is placed to a position where it can be fixed by contacting the reinforcing bar 2 or the shear reinforcing bar 3, and when the arrangement is completed, the bolt part 51 of the integral U-shaped bolt 50 This step can be completed by welding the upper end 71 of the connection bracket 70 and the support plate 30 after fastening the nut N to the.

Here, in the above-described integral U-shaped bolt 50, the bolt part 51 and the locking part 52 are integrally formed, so the gap between the reinforcement bar 2 or shear reinforcing bar 3 and the bottom surface of the exposed concrete If it is narrow, insertion may be difficult.

In this case, after disposing the nut block 62 of the locking part 62 constituting the prefabricated U-shaped bolt 60 on the bottom surface of the concrete, the second bolt 61b of the bolt part 61 is coupled with the second bolt. The coupling may be made in a manner of coupling to the hole 62b.

Here, the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 60 is coupled to at least two or more anchor sockets 14 constituting the bridge bearing 10, in particular, shear reinforcement ( 3), the U-shaped bolts 50 are arranged to come into contact with the U-shaped bolts 50 so that the sliding phenomenon of the bridge support 10 does not occur.

For example, when the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 60 is coupled to the position where one anchor socket 14 is formed, the integral U-shaped bolt 50 or the prefabricated U-shaped bolt disposed on the left side (60) is in contact with the right side of the reinforcing bar (2) or shear reinforcing bar (3), and the integral U-shaped bolt 50 or prefabricated U-shaped bolt 60 disposed on the opposite right side is the reinforcing bar ( 2) Alternatively, construction may be performed in a form in which the sliding phenomenon of the bridge support 10 is prevented by contacting the left side of the shear reinforcing bar 3.

In addition, unlike the above method, the support plate 30 is formed by using the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 60 and the nut N in the U-shaped bolt coupling hole 31 of the support plate 30 It can be directly connected to the reinforcing bar (2) or shear reinforcing bar (3).

Here, when directly connected to the support plate 30 and the reinforcing bar 2 or the shear reinforcing bar 3, the bolt part 51 of the integral U-shaped bolt 50 is formed in the support plate 30 U-shaped bolt coupling hole (31), but arrange it to a position where the locking part 52 formed on the integral U-shaped bolt 50 can be fixed by abutting the reinforcing bar 2 or shear reinforcing bar 3, and the arrangement is complete. When this is done, this step can be completed by fastening the nut N to the bolt part 51 of the integral U-shaped bolt.

Here, in the above-described integral U-shaped bolt 50, since the bolt part 51 and the locking part 52 are integrally formed, it is difficult to insert the reinforcing bars 2 or the shear reinforcing bars 3 when the reinforcement spacing is narrow. can

In this case, after disposing the nut block 62a of the locking part 62 constituting the prefabricated U-shaped bolt 60 on the bottom surface of the concrete, the second bolt 61b of the bolt part 61 is coupled with the second bolt. The coupling may be made in a manner of coupling to the hole 62b.

Here, the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 60 is coupled to at least one anchor socket 14 constituting the bridge support 10, and in particular, the integral U-shaped bolt When the prefabricated U-shaped bolts (60) are coupled to the shear reinforcing bars (3), the U-shaped bolts (50) are arranged so that the U-shaped bolts are in contact with the shear reinforcing bars (3) so that the sliding phenomenon of the bridge support (10) does not occur. shall.

For example, when the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 60 is coupled to the position where one of the anchor sockets 14 is formed, the integral U-shaped bolt 50 or the prefabricated U-shaped bolt 50 disposed on the left side The bolt 60 is in contact with the right side of the reinforcing bar 2 or the shear reinforcing bar 3, and the integral U-shaped bolt 50 or prefabricated U-shaped bolt 60 disposed on the right side opposite to the reinforcing bar 2 or the shear reinforcing bar 3 (2) Alternatively, construction may be performed in a form in which the sliding phenomenon of the bridge support 10 is prevented by contacting the left side of the shear reinforcing bar 3.

la. Anchor socket fixing plate coupling step

This step is a step for fixing the anchor socket fixing plate 20 to the support plate 30.

The anchor socket fixing plate 20 forms an anchor socket coupling hole 22 on the inside, and an anchor socket fixing plate bolt hole 21 having a plurality of threads is formed on the outer circumferential surface of the anchor socket coupling hole 22. After adjusting and matching the position of the bolt hole 32 for the seat holder board in which the thread of the support plate 30 is formed, the anchor socket fixing plate 20 can be fixedly coupled using a normal bolt (B). .

Here, in order to more firmly fix the anchor socket fixing plate 20, the support plate 30 and the anchor socket fixing plate 20 may be additionally fixedly coupled through welding.

The anchor socket fixing plate 20 can complete this step by combining four anchor sockets 14 of the bridge support 10 with the support plate 30 as many as four.

mind. Bridge support installation step

This is a step of coupling the anchor socket 14 of the bridge support 10 to the anchor socket fixing plate 20 coupled to the support plate 30 in the anchor socket fixing plate coupling step.

That is, the bridge bearing 10 in the present invention has a structure in which the bearing 12 is coupled between the upper and lower plates 11 and 13, and the anchor socket 14 is coupled to the lower plate 13 In this step, the anchor socket 14 can be seated in the anchor socket coupling hole 22 formed in the anchor socket fixing plate 20 to complete this step.

Here, in order to further increase the fixing force of the bridge support 10 to the anchor socket fixing plate 20 through this step, the anchor socket 14 coupled to the anchor socket coupling hole 22 of the anchor socket fixing plate 20 is welded. It may be fixed and combined.

In particular, when the above-described bridge bearing 10 is not level, one or more thin gong plates 80 may be inserted into the anchor socket coupling hole 22 of the anchor socket fixing plate 20 to level the work.

Here, the bridge bearing 10 described above is an elastic bearing, a pot bearing, a spherical bearing, a rubber bearing, a pendulum type bearing, an Earthquake Protection System (EPS) that absorbs or dissipates earthquake force with an ER (Mass Energy Regulator) spring, etc. It can be of various forms.

bar. Bridge bearing installation completion stage

This step is a step of completing the construction by pouring earthquake-resistant mortar or non-shrinkage mortar up to the anchor socket 14 constituting the bridge bearing 10 when the installation to the bridge bearing 10 is completed.

In the present invention , the seismic mortar or non-shrinkage mortar can be placed in the form of shotcrete or self-filling with high fluidity.

Here, the earthquake-resistant mortar has a compressive strength of 60 to 200 mpa and has increased toughness by mixing steel fiber and synthetic fiber alone or in combination, and is used when the height of the anchor socket is less than 3 cm and crack resistance is required. use.

In general, the pouring surface of seismic mortar or non-shrinkage mortar should be higher than the coping part of the pier (1a) or abutment (1b). To prevent water from pooling, V-shaped grooves are made on the pouring surface to allow drainage.

On the other hand, the bridge bearing 700 for seismic and seismic isolation reinforcement according to the present invention, which has been installed through the replacement method as described above, is formed by reinforcing bars 2 or shear reinforcing bars ( 3) After fixing and integrating the support plate 30 using U-shaped bolts 50, the anchor socket fixing plate 20 and the bridge support 10 are sequentially fixed and coupled to the upper side of the support plate 30 Even if the length of the anchor socket 14 of the bridge bearing 10 is short, sufficient bearing capacity is formed to perform seismic and seismic isolation functions.

In particular, in the present invention, even if the length of the anchor socket 14 is shortened as described above, earthquake resistance and seismic isolation performance are exhibited, so that even when another bridge bearing 10 is replaced later, the reinforcing bars of the coping portion 1 do not need to be cut. Even if the bridge bearing 10 is replaced, the same seismic and seismic isolation performance is maintained as in the first replaced bridge bearing 10, thereby reducing the load-bearing capacity due to the cutting of the reinforcing bars of the coping part 1 during replacement construction. that can be prevented.

In addition, even when the bridge support 10 is replaced later, the anchor socket fixing plate 20 coupled to the upper side of the support support plate 30 in a state where the support plate 30 is connected to the shear reinforcement 3 of the coping part 1 The replacement work of the bridge support 10 is performed only by removing the anchor socket 14 of the bridge support 10 or by replacing the anchor socket fixing plate 20, so that the same seismic and seismic isolation performance after replacement as well as the ease of replacement can be expected

On the other hand, when installing the bridge bearing 700 for seismic and seismic isolation reinforcement of the present invention, the bridge bearing 10 does not slide the U-shaped bolt 50 for fixing the support plate 30 to the shear reinforcing bar 3 By arranging and fastening so as to prevent sliding of the bridge bearing 10, resistance against horizontal force can be improved.

In addition, by pouring seismic mortar or non-shrinkage mortar in the form of shotcrete or self-filling with high fluidity, voids do not occur in a narrow space, and trapped air generated during mixing is removed by the compaction effect, so seismic mortar or non-shrinkage mortar The effect of increasing the density of can also be obtained.

Although the above-described embodiment is described for a preferred embodiment of the present invention, the present invention is not limited thereto and can be changed and used in various forms within a range that does not deviate from the technical spirit of the present invention. It is clear to those skilled in the art.

1: bridge 1a: pier 1b: abutment 1c: superstructure
2: reinforcement bar 3: shear reinforcing bar
100: jack block part
110: steel block
111: upper flange 111a: first non-slip portion 112 lower flange
113: vertical member 114: abdominal plate
120: L-shaped support plate
200: impression part
210: impression unit
211: cylinder 211a: second anti-slip part
212: piston 212a: spherical groove 212b: thread 212c:
220: rotating hemisphere plate
221: spherical jaw 222: friction surface
230: safety nut
231: screw thread 232: coupling hole
300: friction part
310: friction cover plate 311: horizontal plate 312: vertical plate
320: friction material 321: friction contact surface 322: friction material groove
330: Goimpan
400: displacement record book
410: Displacement recorder holder 411: Marking means coupling hole
420: elastic part 430: marking means 440: upper plate of displacement recording part
450: recording paper 451: displacement scale
460: lower plate of displacement recorder
500: piston control unit
510: piston control block 511: piston control pin groove
520: piston control coupling pin 521: first pin 522: second pin
523: piston control bolt
530: piston control nut 540: piston control scale
600: impression control unit
700: Bridge bearing for seismic and seismic isolation reinforcement
10: bridge support
11: upper plate 12: bearing 13: lower plate 14: anchor socket
20: anchor socket fixing plate
21: anchor socket fixing plate bolt hole 22: anchor socket coupling hole
30: supporting plate
31: U-shaped bolt coupling hole 32: bolt groove for support plate
50: integral U-shaped bolt
51: bolt part 52: locking part
60: prefabricated U-shaped bolt
61: bolt part 61a: first bolt 61b: second bolt
62: hooking part 62a: nut block 62b: second bolt coupling hole
80: Goim thin plate
1000: Simultaneous lifting device for bridge superstructure

Claims (24)

In the bridge upper structure simultaneous lifting device installed in the mold space between the piers or abutments constituting the bridge and the upper structure,
A cylinder disposed on a pier or abutment constituting the bridge and coupled to an inner circumferential surface of the cylinder to which hydraulic pressure is drawn is raised and lowered by hydraulic pressure drawn into the cylinder, and the upper surface, which is the other end not coupled to the cylinder, includes a spherical groove, An impression unit made of a piston forming a screw thread on the side surface of the upper end on which the spherical groove is formed, a spherical jaw that contacts the spherical groove of the piston constituting the impression unit, and a rotating hemisphere plate having a flat friction surface at the other end, an lifting unit including a safety nut including a screw thread engaged with a screw thread formed on a piston constituting the lifting unit;
a friction part formed between the lower part of the upper structure of the bridge and the lifting part; and
Including an impression control unit for controlling the impression unit,
A coupling hole is formed on the side surface of the safety nut constituting the lifting unit, a piston control block including a piston control pin groove inside the side surface of the cylinder, and a first pin coupled to the coupling hole of the safety nut are formed. A piston control coupling pin made of a piston control bolt that is bent from the first pin to form a second pin coupled to the piston control pin groove of the piston control block and extended to one end of the second pin, and a piston of the piston control coupling pin The bridge upper structure simultaneous lifting device characterized in that it further comprises a piston control unit consisting of a piston control nut coupled to the control bolt and a piston control scale formed on the side surface of the cylinder to measure the height position of the piston control bolt.
The method of claim 1, further comprising a jack block portion including a steel block between the pier or abutment and the lifting portion constituting the bridge,
A first non-slip portion made of either a groove or a jaw is further formed on the upper side of the steel block constituting the jack block portion, and a lower portion of the cylinder constituting the lifting portion is formed in the form of a jaw or groove corresponding to the first anti-slip portion. A bridge upper structure simultaneous lifting device characterized in that the second anti-skid portion is further included.
delete delete [Claim 3] The displacement recording unit holder of claim 2, wherein an upper side of the jack block unit includes a marking means coupling hole, an elastic part inserted into the marking unit coupling hole of the displacement recording unit holder, and a marking unit inserted into the displacement recording unit holder. A bridge upper structure simultaneous lifting device characterized in that it further includes a displacement recording unit formed of a displacement recording unit upper plate formed on the upper structure of the bridge and a recording paper formed in the displacement recording unit upper structure so as to be marked by the marking means.
delete delete delete [Claim 2] The simultaneous lifting device for a bridge upper structure according to claim 1, wherein a bottom edge of the piston constituting the lifting part and an upper edge of the inside of the cylinder are rounded.
The friction part of claim 1, wherein the friction part is coupled to the friction cover plate and the friction cover plate coupled to the lower side of the upper structure of the bridge, and the other end is a friction material having a friction contact surface in contact with the friction surface formed on the rotating hemisphere plate constituting the lifting part. including,
The friction cover plate is composed of a horizontal plate coupled to the lower side of the upper structure of the bridge and a vertical plate extending downward at both ends of the horizontal plate,
The bridge upper structure simultaneous lifting device, characterized in that one or more friction material grooves are formed in a concave shape on the frictional contact surface of the friction material.
delete In the lifting method using the simultaneous lifting device for the upper bridge structure of claim 1,
A bridge upper structure simultaneous lifting device including a lifting unit including a lifting unit, a rotating hemisphere plate, and a safety nut in the lower mold space between the upper structure of the bridge and the pier or abutment, and a lifting control unit that controls the friction unit and the lifting unit to raise and lower the upper structure Simultaneous lifting device installation step of the bridge superstructure to install;
A bridge upper structure lifting step of raising the upper structure of the bridge by raising the piston of the lifting unit constituting the lifting unit using the lifting control unit in the bridge upper structure simultaneous lifting device installation step;
A bridge upper structure lifting and maintaining step of moving a safety nut constituting the lifting part so that the piston of the lifting unit constituting the lifting part can maintain an elevated state after the bridge superstructure lifting step; and
It includes a bridge support replacement step of replacing the bridge support,
In the step of installing the simultaneous lifting device for the bridge upper structure, a coupling hole is formed on the side surface of the safety nut constituting the lifting part of the simultaneous lifting device for the upper bridge structure, and a piston control block including a piston control pin groove on the inside of the side surface of the cylinder, A piston formed by forming a first pin coupled to the coupling hole of the safety nut, bending the first pin to form a second pin coupled to the piston control pin groove of the piston control block, and extending to one end of the second pin A piston control unit consisting of a piston control unit coupling pin made of a control unit bolt, a piston control unit nut coupled to the piston control unit bolt of the piston control unit coupling pin, and a piston control scale formed on the side surface of the cylinder to measure the height position of the piston control unit bolt By further installing, after the bridge superstructure lifting device installation step and before the bridge superstructure lifting step, the piston control nut of the piston control unit is used to control the rising height of the piston constituting the lifting unit of the lifting unit to increase the lifting height of the bridge superstructure. A bridge support replacement method using a simultaneous lifting device for the upper structure of a bridge, which is characterized by controlling it. delete delete delete delete delete delete delete delete delete delete delete delete

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