KR20040076107A - bridge bearing and it's install method made use of an oil pressure - Google Patents

Abstract

PURPOSE: A hydraulic shoe is provided to prevent the damage of a structure by installing an elastic bearing to the existing bridge exactly and safely, to decrease the time and manpower required for construction and to improve the load carrying capacity of a bridge. CONSTITUTION: The hydraulic shoe comprises the steps of fixing an upper plate(12) on the lower part of an upper structure of a bridge by an anchor bolt(10), installing an elastic pad(16) on the lower part of the upper plate(12), and installing a convex lower plate(14) provided with a tilting saddle(22), then installing a hydraulic jack(20) provided with a piston rod which contains a flange(24) to be adhered closely to the tilting saddle(22) installed on the lower part of the lower plate(14).

Description

Bridge bearing and it's install method made use of an oil pressure

The present invention relates to a bridge device using a hydraulic pressure and a method for installing the same, and in particular, the load applied to each part of the bridge upper structure when the old bridge device replacement of the bridge is different, the upper portion of the bridge using a piston rod rising by hydraulic pressure The present invention relates to a hydraulic device and a method of installing the same, which can be installed to correspond to different working loads on each part of the structure.

The present invention is a hydraulic jack in which the tilting saddle and the piston rod is installed in the center of the upper plate is installed on the bottom of the upper structure of the bridge by the anchor bolt and the lower plate is installed on the bottom of the elastic pad and the bottom of the elastic pad To install on the side on which the shift or pier is installed and fixed to the side on which the alternating or pier is installed using the anchor bolt of the lower plate.

The method of installing the bridge device comprises the steps of arranging the lower surface of the bridge upper structure and the upper surface of the bridge or bridge to remove the old bridge device of the bridge and fixing and fixing using anchor bolts installed on the upper plate on the lower surface of the bridge upper structure And installing an elastic pad in the lower part of the upper plate, and installing a lower plate in the lower part of the elastic pad, and then installing a hydraulic jack in which a tilting saddle and a piston rod are installed at the center of the pier or alternately, and injecting hydraulic pressure into the hydraulic jack. Adjusting the ascending position of the piston rod while observing the pressure gauge to cope with the load acting on each part of the bridge upper structure while raising the piston rod; Secure the support by installing the pedestal on the bottom of the plate The step of injecting air into the inlet of the hydraulic jack to discharge the hydraulic oil injected into the hydraulic jack through the outlet installed on the opposite side and when the hydraulic oil is completely discharged through the outlet to seal the outlet and the epoxy or no Inject hardening the shrinkage mortar to fix the raised position of the piston rod and then fixed to the surface on which the alternating or pier is installed with the anchor bolt of the lower plate to support the bridge superstructure.

Generally, the bridge device transmits the load applied to the bridge superstructure to the bridge or the bridge, and has the function to accommodate the displacement between the bridge superstructure and the bridge or the bridge, and is installed between the bridge superstructure and the bridge or bridge bridge do.

In addition, if the bridge device is damaged in the bridge, it may not be able to cope with the concentrated load on the bridge superstructure or the expansion of the bridge superstructure, which may cause the bridge superstructure to be destroyed. A problem arises in that bridges fail because they are separated from the bridge piers or the bridges.

In this case, if the classifier device is classified based on the main material, it can be largely classified into an elastic bearing (lead bearing support, rubber bearing) and a steel bearing (POT bearing).

First, the lead rubber bearing (LBR) is a rubber bearing composed of laminated rubber and lead in the form of core, which is installed between the upper and lower structures of bridges and buildings to reduce the seismic force when an earthquake occurs. It is a product that has a characteristic of being recovered.

Secondly, the elastomeric bearing is a kind of bearing having the purpose of transferring the load acting on the upper structure to the lower structure, which is more efficient in load transfer than other bearings, and the movement due to shear deformation and rotation about elastic deformation. free.

In addition, there is little corrosion, there is no big difficulty in maintenance, and it is an economical support that is easy to install.

Third, the POT bearing (Pot bearing) absorbs the impact load while the rubber enclosed in the metal jar behaves like a fluid to accommodate the rotation, the friction coefficient (0.03) is small and the increase of the friction coefficient due to long-term use is small, The height of the base is small, the rotation moment for the horizontal load is small, the allowable amount of expansion and contraction for the longitudinal stretching is large, and the structure type is easy to install and repair and simple to replace.

In particular, as shown in FIGS. 1 and 2, the elastic support mainly used in the present teaching device has an upper plate 12, a lower plate 14, an elastic pad 16, according to the magnitude of the load acting as a single structure. A bridge device (E) in which the size and thickness of the anchor bolt (10) is determined in accordance with the relevant regulations is used, and the new bridge and the bridge to be repaired are currently being constructed by the bridge device (E) having the same structure.

Here, in the new bridges, when the lower structure of the bridge is generally installed at the same time by installing the elastic support at the same time can be precise construction, and after the construction of the upper structure, the planned load is accurately transmitted to each elastic support, so the use of the elastic support It doesn't cause any problems.

However, when replacing and repairing the elastic support for the bridge system of the existing bridge, the aging of the bridge, the increase of heavy vehicles and traffic, the concentration of load, the difference in the geometry space between the superstructure and the substructure, the narrowness of the space where the elastic support is located, Repair and construction of elastic bearings due to the upper structure, vehicle traffic, and traffic control, although the installation and conditions of elastic bearings on new bridges are greatly different, they are treated the same, so that all new bridges and repair bridges use the same elastic bearings. Due to this, there are many difficulties in repairing the elastic support of the existing bridge.

In addition, the replacement of the old bridge device may cause damage to the upper structure and the lower structure, and since it is impossible to precise construction, damage of the upper structure and the lower structure continues even after the replacement and repair of the elastic bearing. It is happening frequently.

Hereinafter, the construction according to the replacement and repair of the elastic support for the bridge device to the existing existing bridge as described above in more detail.

First, install temporary reinforcements or brackets between the upper structure and the lower structure, install the temporary support after hydraulic jack work on the upper structure, and measure the deformation degree of the old structure by visually measuring the deformation of the old structure. Remove all and replace with a new elastomeric bearing.

At this time, in order to fit the clearance between the upper plate and the lower plate in consideration of the deformation degree of the aging device, which is visually measured while installing the upper plate and the lower plate of the new elastic bearing, the upper structure is repeatedly operated by hydraulic jacks. To ensure that

After fixing the anchor bolts of the upper plate and the lower plate and the reinforcement and welding in the upper structure and the lower structure, after placing and curing the non-shrink mortar, the hydraulic jack work and the temporary support are removed at the same time to repair and replace the elastic support. Is complete.

Conventional elastic support for a conventional teaching device that is replaced through a series of processes as described above has the following problems.

First, the elastic support for the conventional stabilization device not only causes damage to the upper structure due to the hydraulic jack operation of the upper structure repeated several times to match the clearance between the upper plate and the lower plate, but also the transportation of the upper structure due to the hydraulic jack operation. There is a problem that control, accidents of workers, prolonged construction period, increase in construction cost, etc.

Secondly, the conventional elastic support for the stabilization device has a method of accurately assigning the design load to each elastic support while installing the elastic support, and there is no method of separately checking whether each elastic support supports the design load even after the installation of the elastic support. Even after the repair of the elastic bearing, there is a problem that the damage of the upper structure and the lower structure continues to proceed.

Accordingly, the present invention has been made in order to solve the above problems, the bridge rod of the upper structure while observing the lifting amount of the piston rod of the bridge device installed between the alternating surface or the bridge is installed through the pressure gauge The purpose of the present invention is to provide a simple and engineering hydraulic bridge device and a method of installing the same so that the upper part of the bridge is not subjected to eccentric loads while being adjusted to cope with various loads applied to each part. have.

1 is a perspective view showing an elastic support for a conventional teaching device,

Figure 2 is a cross-sectional view showing an elastic support for a conventional teaching device;

Figure 3 is a perspective view of the elastic support for the chair according to the invention,

Figure 4 is a cross-sectional view showing the elastic support for the chair according to the invention,

5 is a structural view showing the elastic support for the chair according to the invention,

Figure 6 is an exemplary view showing an elastic foot for the chair apparatus according to the present invention.

Explanation of symbols on the main parts of the drawing

10: anchor bolt 12: upper plate

14: lower plate 16: elastic pad

18: injection hole 20: hydraulic jack

22: tilting saddle 24: flanger

26: outlet 28: hydraulic hose

30: pressure gauge 32: hydraulic pump

34: quick coupler 35: bolt hole

36: fixing bolt 37: rubber ring

38: piston rod 40: pedestal

E: Chair Unit

The hydraulic device according to the present invention for achieving the above object is the upper plate is installed by the anchor bolt on the lower surface of the upper structure of the bridge and the lower plate is installed on the lower surface of the elastic pad and elastic pad is installed on the lower surface of the upper plate In the lower surface of the tilting saddle and the piston rod is installed in the center of the hydraulic jack is installed on the surface of the alternating or pier is installed by using the anchor bolt of the lower plate fixed to the side of the pier or alternating installation.

The installation method of the bridge device is the step of arranging the lower surface of the bridge upper structure and the upper surface of the bridge or bridge to remove the old bridge device of the bridge and the step of fixing and fixing using an anchor bolt installed on the upper plate on the lower surface of the bridge upper structure And installing an elastic pad in the lower part of the upper plate, and installing a lower plate in the lower part of the elastic pad, and then installing a hydraulic jack in which the tilting saddle and the piston rod are installed at the center of the pier or alternately, and injecting hydraulic pressure into the hydraulic jack. Adjusting the ascending position of the piston rod while observing the pressure gauge so as to correspond to the load acting on each part of the bridge upper structure while raising the piston rod; Support by installing the stand between the bottom of the plate Determining and injecting air into the inlet of the hydraulic jack to discharge the air and hydraulic oil injected into the hydraulic jack through the outlet installed on the opposite side and when the hydraulic oil is completely discharged through the outlet to seal the outlet and epoxy through the inlet B. After the non-shrink mortar is fixed by injection hardening to fix the raised position of the piston rod, it is characterized in that the anchor bolt of the lower plate is fixed to the surface on which the alternating or pier is installed to support the bridge upper structure.

Hereinafter, described in detail by the accompanying drawings illustrating the configuration and operation of the present invention.

3 is a perspective view showing the elastic support for the bridge device according to the present invention, by fixing the upper plate 12 using the anchor bolt 10 on the lower surface of the bridge upper structure, the elastic pad 16 on the lower surface The lower plate 14 is installed integrally with the center of the tilting saddle 22, which is convex outward, and then tilted with a hemispherical shape installed in the center of the lower plate 14. The hydraulic jack 20 in which the cylindrical piston rod 38, which forms a hemispherical flanged flanger 24, which is concave inwardly so as to be in close contact with the saddle 22, is installed on the surface on which the alternating or piers are installed. .

The hemispherical tilting saddles 22 and the lower plate 14 and the piston rod 38 are formed by fixing bolts 36 by using bolt holes 35 respectively formed to be integrated.

In addition, the hemispherical tilting birds 22 and the concave hemispherical flanger 24 formed inwardly contact each other precisely so that the piston rod 38 can function to be smoothly lifted when lifted by hydraulic pressure. To do this.

In the hydraulic jack 20, as shown in FIG. 3 and FIG. 4 to be described later, the injection port 18 capable of injecting hydraulic pressure by the hydraulic pump 32 and the injection of hydraulic pressure are completed to fix the piston rod 38. When the hydraulic jack 20 is injected to form an outlet 26 for discharging the air and hydraulic pressure.

The rubber ring 37 is installed in the circumferential direction of the piston rod 38 so that the hydraulic pressure does not leak out when the hydraulic pressure acts on the hydraulic jack 20.

In addition, the pedestal 40 injects hydraulic pressure into the hydraulic jack 20 so that the piston rod 38 is raised by a predetermined amount and the pedestal 40 is fixed to the desired position by the hydraulic jack 20 and the lower plate ( It is installed between the lower surface of 14) to fix the upper structure of the bridge.

Figure 4 is a cross-sectional view showing the elastic support for the chair according to the present invention, after installing the device described in Figure 3 by using the hydraulic pump 32 to the hydraulic pressure using the inlet 18 of the hydraulic jack 20 Observation of the pressure gauge 30 while injecting causes different loads to be applied to each part of the upper structure of the bridge, for example, the center portion of the bridge and the inlet portion of the bridge or both sides of the bridge. Since the moving load acting on the bridge is diversified, the displacement of the bridge itself is different, so that the load acting on each part is different, so that the piston rod (38) according to the amount of hydraulic pressure in the pressure gauge (30) is appropriately responded thereto. ), And adjust the lift amount appropriately, and fix the pedestal 40 between the hydraulic jack 20 and the lower plate 14 at the lower portion thereof. To remove the hydraulic pressure and air injected into the hydraulic jack 20 through the outlet 26 installed on the opposite side, and then bolted to the outlet 26 and then injecting epoxy or non-shrink mortar through the inlet 18. After charging, the anchor bolt 10 of the lower plate 14 is fixedly installed on the surface on which the pier or alternator is installed to install the bridge device E between the bridge upper structure and the surface on which the alternating or pier is installed.

FIG. 5 is an operation structural view showing an elastic bearing for a pedestal device according to the present invention.

6 is an exemplary view showing the elastic support for the seating apparatus according to the present invention, showing that the tilting birds 22 described in FIG. 3 are separated from the lower plate 14 and formed as a separate object, and the operation and installation method thereof. Is the same, but different in convenience in manufacturing and installation, using the bolt hole 35 formed in the tilting birds 22 formed as a separate object and the lower plate 14 is integrated into the fixing bolt 36 by FIG. Follow the procedure described in the section to install it and make it work.

In addition, the tilting saddle 22 may be integrally formed on the flanger 24, which is a concave surface inside the piston rod 38, and may be used as the piston rod 38.

Here, the hydraulic jack 20 fixed to the lower surface of the lower plate 14 is buried in the concrete of the surface on which the alternating or piers are installed to sufficiently support the design load and lower the height of the installation of the teaching apparatus E as a whole. There is an effect that does not need to remove the concrete of the portion where the device (E) is installed more than necessary.

In addition, the tilting saddle 22 of the lower plate 14 and the flanger 24 portion of the hydraulic jack 20 are formed to be in close contact with the hemispherical shape, so that the flanger 24 and the lower plate 14 of the hydraulic jack 20 are in close contact with each other. The contact surface with the tilting saddles 22 located on the lower surface prevents the detachment during the lifting operation of the piston rod 38 of the hydraulic jack 20 and can securely support the design load while being in close contact.

Lower flanger 24 in order to prevent the stability of the work, the piston rod 38, while fixing the piston rod 38 after applying the design load accurately by using the hydraulic jack 20 fixed to the lower plate 14 The pedestal 40 is installed between the lower surface and the hydraulic jack 20.

Here, the inlet 18 is provided with a quick coupler 34 for the connection with the hydraulic hose (28).

The reason for installing the quick coupler 34 in this way is that when connecting and disconnecting the pressure gauge 30 with the hydraulic hose 28 to the inlet 18, the quick coupler located at both ends of the hydraulic hose (28) ( 34), to facilitate the installation and removal of the hydraulic hose 28 and the pressure gauge (30).

In addition, the pedestal 40 is installed in the left and right symmetrical to the upper both ends of the hydraulic jack 20 to prevent the displacement of the piston rod 38 after the operation of the hydraulic jack 20, to ensure the stability of the work.

The bridge device according to the present invention having the configuration as described above is the upper plate 12 and the lower plate of the prescribed standard that can support the design load for each of the bridge device (E) required in the bridge made of various structures ( 14) and the support capacity of the hydraulic jack 20 that can support the design load while making and using the elastic pad 16, the size of the tilting saddle 22 and the flanger 24, the height and size of the fixed pedestal 40 , The specification of the hydraulic hose 28, the pressure gauge 30, the hydraulic pump 32 and the like will be apparent that it can be changed and used as appropriate in the field.

In other words, the hydraulic device according to the present invention made of the configuration as described above the lower plate 14, the tilting saddle 22, the flanger 24, the hydraulic jack 20, the hydraulic hose 28, the pressure gauge ( 30) and the hydraulic pump 32 are organically coupled, the hydraulic jack 20 is fixed to the lower surface of the lower plate 14 to operate the hydraulic pump 32 to push up the piston rod 38 of the hydraulic jack 20. The clearance between the upper plate 12 and the lower plate 14 can be easily secured, and the design load applied to each of the teaching devices E can be precisely applied while using the pressure gauge 30 of the hydraulic jack 20. Check and ensure that the load is properly and evenly distributed to prevent damage to the upper and lower structures.

Hereinafter, a method of installing the chair apparatus using the hydraulic pressure according to the present invention having the configuration as described above will be described.

a) arranging the lower surface of the bridge superstructure and the upper surface of the bridge or the bridge after installing the support between the bridge superstructure and the bridge or shift to remove the old bridge device of the bridge;

b) fixing and fixing using an anchor bolt 10 installed on the upper plate 12 on the lower surface of the bridge upper structure and installing an elastic pad 16 on the lower portion thereof;

c) Install the lower plate 14 in the lower portion of the elastic pad 16, and then the hydraulic jack (integrated with the fixing bolt 36 in the bolt hole 35 formed in the tilting saddle 22 and the piston rod 38 to be installed subsequently) Installing the hydraulic jack 20 on the side where the pier or the shift is installed while being installed in the center of the groove;

d) While observing the pressure gauge 30 to inject hydraulic pressure into the hydraulic jack 20 to raise the piston rod 38 while responding to the load acting on each part of the bridge superstructure, Adjusting the ascending position;

e) when the piston rod 38 is completed, the support 40 is installed by fixing the support 40 between the periphery of the hydraulic jack 20 and the lower surface of the lower plate 14;

f) injecting air into the inlet port 18 of the hydraulic jack 20 to discharge the air and hydraulic pressure injected into the hydraulic jack 20 through the outlet 26 installed on the opposite side; And

g) When the hydraulic pressure is completely discharged through the outlet 26, the outlet 26 is sealed and the epoxy or non-shrink mortar is injected and cured through the inlet 18 to fix the raised position of the piston rod 38. The anchor bolt 10 of the plate 14 is characterized in that it is installed in a step of fixing to the surface on which the alternating or piers are installed to support the bridge superstructure.

What has been described above is merely illustrative in all respects, and should not be construed as limited thereto, and all embodiments that fall within the true spirit and scope of the present invention are included in the claims of the present invention.

For example, when installing the H-beam for improving the load capacity of the RC slab bridge by using the elastic support for the bridge device according to the present invention when installing by using the hydraulic jack 20 used in the present invention as well as precisely applying the load. It is easy to get close to the bottom of the slab to solve the problems caused by the reinforcement work.

As described above, the method using the hydraulic device and its installation method according to the present invention has the following effects.

First, the hydraulic apparatus and the installation method thereof using the hydraulic pressure according to the present invention has the advantage of preventing the damage of the structure by accurately and safely installing the elastic support on the existing bridge using the elastic support.

Second, the hydraulic device and the installation method according to the present invention by fixing the hydraulic jack to the elastic bearing to secure the clearance between the upper plate and the lower plate using the hydraulic jack and to give the design load to each elastic bearing accurately the load is By working evenly there is an advantage that can prevent damage to the structure.

Third, the hydraulic device and the installation method thereof according to the present invention can significantly reduce the construction period and work force when using the lower plate on which the hydraulic jack that can support the design load is used for the repair of the elastic bearing. Rather, it has the effect of improving the load capacity of the bridge with precise construction.

Claims (8)

Alternating between the upper plate installed by the anchor bolt on the lower surface of the bridge and the elastic pad installed on the lower surface of the upper plate, and the hydraulic jack with the tilting birds and the piston rod installed on the lower surface of the lower plate sequentially installed on the lower surface thereof Or installed on the pier is installed, the hydraulic bridge device, characterized in that the fixed installation in the shift or pier using the anchor bolt of the lower plate. The method of claim 1, The lower plate and the tilting birds are formed integrally, the lower plate and the tilting saddle and the piston rod is a hydraulic device using a hydraulic device, characterized in that the fixed bolt by a bolt. The method of claim 1, The lower plate and the tilting bird is separated and formed as a separate object, the lower plate and the tilting saddle and the piston rod is a hydraulic device using a hydraulic device, characterized in that the bolt is fixed by a fixed bolt. The method according to claim 1, wherein The tilting bird is a hydraulic device, characterized in that formed in a convex hemispherical shape to the outside. The method according to claim 1, wherein In the center of the upper portion of the piston rod installed in the center of the hydraulic jack has a flanger formed in a concave hemispherical shape inwardly to be in close contact with the convexly protruding hemisphere of the tilting bird and is a packing member for preventing hydraulic leakage to the piston rod body A hydraulic device using a hydraulic ring, characterized in that the rubber ring is installed. The method according to claim 1 or 5, The flanger portion of the piston rod and the tilting bird is integrated so that the lower flanger and the tilting saddle and the piston rod is connected to the fixed bolt by a bolt hole. The method of claim 1, The hydraulic jack is a hydraulic injector device, characterized in that the inlet for the injection of hydraulic or air and epoxy or non-shrink mortar and the injection of the hydraulic pressure is completed on the opposite side is formed for the discharge of air and hydraulic pressure. a) installing a support between the bridge superstructure and the bridge or shift to remove the old bridge device and removing the old bridge device and then arranging the lower surface of the bridge superstructure and the top of the bridge or bridge; b) fixing and fixing an anchor pad on the lower surface of the bridge upper structure and installing an elastic pad on the lower portion of the upper structure; c) Install the lower plate on the lower side of the elastic pad and then the lower convex hemispherical tilting birds and the lower plate and the tilting birds are placed in a flanger having a hemispherical shape concave inward in the center of the piston rod. Integrating the fixing bolt using the bolt hole formed in the piston rod to install in the hydraulic jack while installing the hydraulic jack on the piers or shifts; d) adjusting the raised position of the piston rod while injecting hydraulic pressure into the hydraulic jack to raise the piston rod while observing the pressure gauge to correspond to the load acting on each part of the bridge superstructure; e) installing and supporting a support between the periphery of the hydraulic jack and the lower plate of the lower plate when the ascending of the piston rod is completed; f) injecting air into the inlet of the hydraulic jack so that the air and hydraulic oil injected into the hydraulic jack are discharged through the outlet installed on the opposite side; And g) When the hydraulic oil is completely discharged through the discharge port, the discharge port is sealed and epoxy or non-shrink mortar is injected and cured through the injection hole to fix the raised position of the piston rod. Method of installation of a device using a hydraulic pressure, characterized in that consisting of steps fixed to.