KR100453746B1 - Restoration method and apparatus of bridge bearing - Google Patents

Abstract

The present invention relates to a bridge restoring method and apparatus for easily restoring a shear deformation of an elastic rubber layer of a bridge support to a state of standard temperature without dismantling it. ,

Its configuration is in the bridge support installed between the superstructure and the substructure of the bridge; A restoration device installation step of installing a case having a lower portion sealed and receiving a transparent window so as to receive water around the bridge bearing, and installing heating means for heating water into the case; An upper structure raising step of installing a plurality of jacks on an upper surface of the lower structure to one side of the case to raise the upper structure; A bridge bearing heating step of injecting water into the case in an elevated state of the upper structure and heating the injected water so that the inclined elastic rubber layer of the bridge bearing is restored to its original state; A visual inspection step of visually inspecting whether the elastic rubber layer is restored to its original state through the transparent window; A dismantling device disassembling step of discharging water and dismantling a restoring device installed around the bridge support after recognizing that the elastic rubber layer is restored to its original state through the visual inspection step; Lowering the jack is configured to include an upper structure lowering step to lower the upper structure to its original state.

By providing the restoration method and apparatus of the bridge support as described above, the loss of human and material resources due to the input of heavy equipment is remarkably reduced, the construction period is remarkably shortened by the restoration construction, and the risk of accidents due to the dismantling of the bridge support is delayed. It is possible to restore the desired amount of restoration quickly and easily even in bad weather in the summer and winter, and it is possible to prevent large accidents such as bridge collapse by eliminating the unstable support function by simple construction.

Description

Restoration method and apparatus of bridge bearing

The present invention provides a method for restoring a bridge support easily recovering the elastic rubber layer of the bridge support excessively sheared from the standard state to a state of standard temperature without dismantling the bridge support during construction in high and low temperatures in summer or winter. And to an apparatus.

In general, the bridge support safely supports the vertical load acting on the superstructure of a bridge or building and allows horizontal movement, thereby reducing the amount of excessive horizontal force acting on the undercarriage or the bridge, and also functioning as a cushioning effect. Refers to a laminated rubber elastomer produced in a square or circle.

Such a bridge bearing is formed by forming an elastic rubber layer having a thin rubber and a steel sheet in a stacked form between an upper plate and a lower plate, and the rubber is vulcanized to have durability.

However, when the bridge bearing is constructed at a high temperature in the summer and a low temperature in the winter, the elastic rubber layer causes excessive shear deformation than the state of the standard temperature, thereby failing to adequately support the vertical load of the superstructure. have.

Due to the shear deformation of the elastic rubber layer as described above, there is a problem in that the support function of the bridge support becomes unstable, so that there is a possibility that a large accident such as bridge collapse occurs.

In order to solve the above problems, conventionally, the upper structure of the bridge is raised and the bridge bearing is dismantled by heavy equipment such as a crane to remove the bridge and then heated to restore the elastic rubber layer to its original state.

However, by dismantling the bridge bearing by putting heavy equipment into the lower part of a huge structure such as a bridge as described above, there is a problem that causes a serious economic loss, such as a lot of manpower and resources are required.

In addition, there is a problem that the restoration construction period becomes very long due to the complicated process and inconvenient working environment, such as dismantling and restoring and reassembling the bridge bearings one by one using heavy equipment.

In addition, as the restoration construction period becomes longer as described above, there is a problem that the risk of an accident due to the dismantling of the bridge support remains during the construction period.

In addition, when dismantling the bridge bearing in winter, when the elastic rubber layer is heated and restored, there is a problem in that the rubber layer is heated to a high temperature due to carelessness of the operator, and thus the vulcanized rubber layer is reverse vulcanized, thereby deteriorating the durability of the elastic rubber layer.

In addition, by reassembling the bridge bearing having the elastic rubber layer in the reverse vulcanized state to be used as a support means for the vertical load generated by the superstructure, there is a problem that causes a large accident such as bridge collapse.

Accordingly, the present invention has been made to solve the conventional problems as described above,

Its purpose is to provide a bridge restoring method that easily restores the shear deformation of the elastic rubber layer of the bridge bearing to the state of standard temperature without dismantling the bridge bearing in high and low temperatures in summer or winter. .

It is also an object of the present invention to provide a method for restoring a bridge support such that water flowing into the circumference of the bridge support is heated to a constant temperature for a predetermined time.

It is also an object of the present invention to provide a method for restoring a bridge bearing which is allowed to cool naturally by leaving the bridge bearing restored by heated water for a predetermined time.

In addition, an object of the present invention is a bridge restoring device for easily restoring the elastic rubber layer of the bridge support to the state of the standard temperature by the construction of the bridge in the hot and cold state of the summer or winter without dismantling the bridge bearing In providing.

It is also an object of the present invention to provide an apparatus for restoring a bridge support to allow the water introduced around the bridge support to be heated to a constant temperature.

In order to achieve the above object, the present invention provides a bridge support provided between the upper structure and the lower structure of the bridge; A restoration device installation step of installing a case having a lower portion sealed and receiving a transparent window so as to receive water around the bridge bearing, and installing heating means for heating water into the case; An upper structure raising step of installing a plurality of jacks on an upper surface of the lower structure to one side of the case to raise the upper structure; A bridge bearing heating step of injecting water into the case in an elevated state of the upper structure and heating the injected water so that the inclined elastic rubber layer of the bridge bearing is restored to its original state; A visual inspection step of visually inspecting whether the elastic rubber layer is restored to its original state through the transparent window; A dismantling device disassembling step of discharging water and dismantling a restoring device installed around the bridge support after recognizing that the elastic rubber layer is restored to its original state through the visual inspection step; Lowering the jack is characterized in that it comprises an upper structure lowering step for lowering the upper structure to its original state.

In addition, the bridge between the heating step and the visual inspection step is characterized in that it further comprises a temperature maintaining step for maintaining the heated water for a predetermined time at a temperature of 60 ~ 70 ℃.

The method may further include a natural cooling step of maintaining the superstructure for a predetermined time in a state where the upper structure is raised between the dismantling step of the restoring device and the descending step of the superstructure.

In addition, in the bridge support is provided between the upper structure and the lower structure of the bridge; the case of the upper and lower parts and one side is opened around the bridge support is inserted into the upper surface of the lower structure is provided for sealing Wealth; A visual inspection unit provided with a transparent window sealed at its side and a lower surface to an open side of the case; A water inlet and outlet having an inlet opening and closing valve at one upper portion of the case and a water outlet having an outlet opening and closing valve at the other side of the case; It is characterized in that consisting of a water heating unit provided with a plurality of heater rods connected to the power supply inside the case.

In addition, the temperature control sensor is provided with a inside of the case, characterized in that the temperature control unit consisting of a control box for controlling the supply of electricity to the heater rod by the detection of the temperature sensor.

1 is a process chart showing a method of restoring a bridge bearing according to the present invention;

1A is a process chart showing a method of restoring a bridge bearing;

FIG. 2B is a process chart showing a restoration method following FIG. 1A;

2 is a block diagram showing another embodiment of a restoration method according to the present invention;

3 is a partially exploded perspective view showing a restoring apparatus according to the present invention;

4 is a longitudinal sectional view showing a state of use of the restoration apparatus according to the present invention;

4A is a longitudinal sectional view showing a state before a bridge bearing is restored;

4B is a longitudinal sectional view showing a state after the bridge receiving is restored;

5 is a partially exploded perspective view showing another embodiment of the restoration apparatus according to the present invention.

* Explanation of symbols for the main parts of the drawings

1: Restoration device

10: water holding part

11: case

20: visual inspection

21: transparent window

30: water inlet and outlet

31: water inlet 32: inlet opening and closing valve 33: water outlet

34: discharge opening and closing valve

40: water heater

41: heater rod 42: power

50: temperature control unit

51: temperature sensor 52: control box

2: bridge bearing 3: superstructure 4: undercarriage

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a process chart showing a method of restoring a bridge bearing according to the present invention.

1A is a process chart showing a restoration method in winter,

FIG. 1B is a process chart showing a restoration method following FIG. 1A.

Looking at the process of the restoration method according to the present invention as shown in FIG.

This restoration method is used to restore the shear deformation of the bridge bearing due to the high temperature in winter.

The restoration method is roughly shown by installing a restoring device around the bridge support to inject water to fill it, and then heating the water so that the elastic rubber layer is heated so that the elastic rubber layer is restored to its original state. will be.

Such a restoration method is the restoration device installation step (S10), the upper structure rising step (S20), bridge bearing heating step (S30), visual inspection step (S40), the restoration device dismantling step (S50), the upper structure descending step (S60) ) Is made sequentially to restore the elastic rubber layer of the bridge support.

In more detail, as shown in Figure 1a, the restoring device installation step (S10) can accommodate the water around the bridge support installed between the upper structure and the lower structure of the bridge and has a transparent window on one side A restoration device provided with a furnace heating means is provided, and a sealing treatment is performed between the lower portion of the restoration device and the upper surface of the lower structure with a sealant or the like so as to prevent leakage.

Then, the step of raising the upper structure (S20) is a step of raising the upper structure by using a jack or the like after the restoration device installation step (S10), that is, the restoring device is installed so that the elastic rubber layer is not subjected to the vertical load. It is

In addition, the elastic rubber layer is transferred to the bridge bearing heating step (S30) in a state in which the elastic rubber layer is not subjected to the vertical load by the upper structure rising step (S20), wherein the bridge bearing heating step (S30) injects water into the case. After the filling, the water is heated by heating means such as a heater rod, and the elastic rubber layer deformed at low temperature by the heated water is heated to restore the original shape.

Here, the bridge receiving heating step (S30) is preferably filled by injecting water as the water is heated and evaporated, and the heating temperature of the water is more preferably maintained at about 60 ~ 70 ℃ constant.

In addition, the visual inspection step (S40) is a step made after the bridge bearing heating step (S30), as shown in Figure 1b, it is clear that the elastic rubber layer is heated and restored by the bridge bearing heating step (S30) Through this, the worker recognizes visually and checks the restoration state, and the worker proceeds to the next step after recognizing that the elastic rubber layer is properly restored and made vertical.

Next, the recovery device dismantling step (S50) is discharged the water injected after the operator recognizes that the elastic rubber layer is properly restored to the vertical state by the visual inspection step (S40) and in the installation of the recovery device (S10) The process of dismantling an installed restoration device.

In addition, the upper structure lowering step (S60) is to lower the jack after the restoring device is dismantled to lower the upper structure to its original state so that the bridge support is in a state of supporting the upper structure under vertical load.

Therefore, by the bridge restoring method as described above, the bridge rest can be easily restored without dismantling and restoring a plurality of bridge rests at once, so that the restoring work can be easily performed in a safe working environment and at the same time, low cost. It will be possible to restore the bridge bearing.

On the other hand, as shown in Figure 2 looking at a block diagram showing another embodiment of the restoration method according to the present invention,

FIG. 2 shows another embodiment of a method for restoring a bridge bearing by heating in winter.

Restoration method of the winter is the restoration device installation step (S10), the upper structure rising step (S20), bridge bearing heating step (S30), temperature maintenance step (S31), visual inspection step (S40), the recovery device dismantling step (S50) ), The natural cooling step (S51), the upper structure descending step (S60) is made to sequentially restore the bridge bearing.

Here, the temperature maintenance step (S31) is added between the bridge bearing heating step (S30) and the visual inspection step (S40), the temperature maintenance step (S31) of the water heated through the temperature sensor and the control box, and the like. By maintaining the temperature about 60 ~ 70 ℃ for a certain time,

This is to prevent the loss of durability of the rubber due to reverse vulcanization occurs in the vulcanized elastic rubber layer due to a very high heating temperature due to long time heating.

In addition, the natural cooling step (S51) is added between the decommissioning device dismantling step (S50) and the upper structure lowering step (S60), the natural cooling step (S51) is a restoration device in a state in which the restoration of the bridge support is finished. After dismantling, the bridge structure is kept elevated for a certain time to allow the bridge bearing to cool naturally.

This is to prevent the sagging of the elastic rubber layer generated by receiving a vertical load by immediately lowering the upper structure in a state where it is heated for a long time and heated to the inside of the elastic rubber layer.

Therefore, the bridge support by the temperature maintenance step (S31) and the natural cooling step (S51) is to be able to properly perform the vertical support of the upper structure, which is its inherent role even after being restored.

On the other hand, as shown in Figure 3 is a partial exploded perspective view showing a restoring apparatus according to the present invention,

The bridge restoring apparatus 1 is provided with a visual inspection unit 20 provided as a transparent window 21 in the water receiving portion 10 provided as a case 11 and a water entry and exit portion to one side of the case 11. 30 is provided and is provided with a water heater 40 having a heater rod 41 to the inside of the case (11).

In a more detailed configuration, the water receiving portion 10 is composed of a case 11, the upper and lower portions and one side is opened, and at the same time serves as a space for receiving the water introduced by the water inlet and outlet unit 30 The visual inspection unit 20 is to be provided.

In addition, the visual inspection unit 20 is a transparent window 21 is configured to be airtightly attached to one side of the open case 11, the operator can easily see the inside of the case 11 elasticity of the bridge bearing It is to be able to visually recognize the restored state of the rubber layer.

In addition, the water inlet and outlet part 30 is provided with a water inlet 31 having an inlet opening and closing valve 32 to the upper side of the case 11, the outlet opening and closing valve 34 to the other lower side of the case (11) The water discharge port 33 having is provided is configured.

Here, the water entry and exit unit 30 serves to introduce or discharge water into the case 11 and the transparent window 21 which are installed in an airtight state on the upper surface of the lower structure.

In addition, the on-off valves 32 and 34 serve to receive water into the case 11 by the opening and closing operation so as to be properly heated, and at the same time, to fill the water reduced by the heating.

In addition, the water heating part 40 is composed of a heater rod 41 provided in the case 11 and a power supply 42 for supplying electricity to the heater rod 41, the case of the case 11 After the water is filled therein, the heater rod 41 is operated so that the water is heated due to the heat generated, and the bridge bearing is excessively deformed than the standard temperature state by the construction of summer or winter by the heated water. It is to be restored by heating.

Here, the heater rod 41 is preferably configured to generate heat in the water by the supply of electricity, the power source 42 is preferably provided with an electric generator that is easy to move.

Therefore, the restoring apparatus 1 is installed around the bridge support with a simple structure and is configured to restore the bridge support sheared in summer or winter by heating, so that the restoration work can be easily performed in a safe working environment and a short working time. The low cost and ease of installation make it possible to restore multiple bridge bearings at once.

On the other hand, Figure 4 is a longitudinal sectional view showing a state of use of the restoration apparatus according to the present invention,

4A is a longitudinal sectional view showing a state before the bridge bearing is restored,

4B is a longitudinal sectional view showing a state after the bridge receiving is restored.

As shown in FIG. 4A, the bridge support 2 installed between the upper structure 3 and the lower structure 4 is formed by laminating rubber and steel sheets between the upper plate 2a and the lower plate 2b. The elastic rubber layer 5 is provided.

And, the upper plate (2a) is mounted to the lower portion of the upper structure (3), the lower plate (2b) is mounted to the upper portion of the lower structure (4), between the upper plate (2a) and lower plate (2b) The elastic rubber layer 5 is to be placed on.

Here, when the elastic rubber layer (5) is sheared by the expansion and contraction of the upper structure (3) due to the change of air temperature in the summer or winter, and tilted or twisted to one side, the device is installed around the bridge support (2) to restore It is done.

First, the case 11 is inserted around the bridge support 2 and the bottom surface thereof is hermetically sealed. Then, the jack 6 is installed on one side of the case 11 to lift the upper structure 3 to lift the elastic rubber layer. (5) prevent vertical loads from occurring.

In such a state that the upper structure (3) is lifted so that the vertical load is not generated, water is injected through the water inlet 31 into the case 11 to fill the heater rod to maintain a constant temperature for a predetermined time. 41), which heats the water so that the elastic rubber layer 5 is heated and the elastic rubber layer 5 is restored by the heating.

As such, the bridge bearing 2, which is deformed excessively than the standard temperature state by construction at high and low temperatures in summer and winter, is heated by the heater rod 41 of the elastic rubber layer 5 as shown in FIG. 4B. This is to restore the original state of the vertical state.

After restoring the elastic rubber layer 5, the device is dismantled and the jack 6 is lowered to lower the upper structure 3 to its original state.

Here, since the elastic rubber layer 5 is heated even after dismantling the restoring device, the elastic rubber layer 5 is left to rest for a predetermined time in the state in which the jack 6 is raised after restoring, so that the elastic rubber layer 5 is cooled and properly cooled. The upper structure 3 is later lowered to prevent sagging of the elastic rubber layer 5 generated by immediately lowering the upper structure 3 after being restored after heating.

On the other hand, as shown in Figure 5 looking at a partial exploded perspective view showing another embodiment of the restoration apparatus according to the present invention,

The bridge restoring device 1 has a transparent window 21 mounted on one side of the case 11 having an upper and lower side and one side open, and a water inlet 31 and a water outlet at both sides of the case 11. 33 is provided, a plurality of heater rods 41 electrically connected to the power source 42 are provided inside the case 11, and the temperature control unit 50 is provided between the heater rods 41. It is composed.

Here, the temperature control unit 50 is provided with a temperature sensor 51 into the case 11, and is electrically connected to the temperature sensor 51 and at the same time of the power supply 42 and the heater rod 41 The control box 52 which is electrically connected between is provided.

In addition, the temperature controller 50 controls the heat generation of the heater rod 41 to fill the inside of the case 11 so that the water heated by the heater rod 41 has a constant temperature.

The temperature sensor 51 detects a temperature of water heated in the case 11 and transmits the temperature to the control box 52. The control box 52 is the temperature sensor 51. In accordance with the signal sensed by) serves to intercept the electricity supply to the heater rod (41).

Therefore, it is more preferable that the control box 52 is provided with a display unit or an operation unit so that the operator can set it to a constant temperature.

As described above, the temperature control unit 50 is provided in the restoring apparatus 1 to maintain a constant temperature, thereby preventing reverse vulcanization of the elastic rubber layer of the bridge bearing due to high temperature heating, thereby restoring the bridge bearing. The heating prevents the elastic rubber layer from deteriorating due to its heating and preventing its inherent role.

As described above, the present invention facilitates restoration of shear deformation of the elastic rubber layer of the bridge bearing at high or low temperatures in summer or winter without dismantling the bridge bearing, thereby significantly reducing the loss of human and physical resources due to heavy equipment input. The construction period is reduced significantly due to the reduced construction, and the risk of accidents due to the dismantling of the bridge bearing is prevented in advance, and it is possible to quickly and easily restore the desired restoration amount even in bad weather in summer and winter. By eliminating the function, it is possible to prevent large accidents such as bridge collapse.

In addition, the present invention is to ensure that the water flowing into the circumference of the bridge support is heated to a constant temperature for a certain time, so that the elastic rubber layer of the bridge support having a vulcanization and durability is heated to a high temperature to reverse vulcanization and thereby lose durability This prevents the bridge bearing from being damaged by restoration and thus prevents the bridge from performing its proper role.

In addition, the present invention by allowing the bridge restored by the heated water to be left for a certain time and thereby naturally cooled, the deflection occurs under the vertical load of the superstructure in the state in which the elastic rubber layer is heated after the restoration of the bridge rest. It has the effect of preventing from becoming.

In addition, the present invention is to facilitate the installation of the elastic rubber layer of the bridge support shear deformation by the construction of the bridge at high or low temperature in the summer or winter without dismantling the bridge support, easy installation and simple manufacturing cost It is inexpensive, and the loss of human and material resources due to the input of heavy equipment during restoration construction is remarkably reduced, the construction period due to restoration construction is remarkably shortened, and the risk of accidents due to the dismantling of the bridge bearing is prevented in advance, and the bad weather in summer and winter In addition, it can be quickly and easily restored as much as the desired amount of restoration, and it is possible to prevent large accidents such as bridge collapse by eliminating the unstable support function by simple construction.

In addition, the present invention is to ensure that the water flowing into the circumference of the bridge bearing is heated to a constant temperature, the elastic rubber layer of the vulcanized bridge bearing is heated at a high temperature to maintain a constant temperature in a simple structure and accordingly durable It is prevented from being vulcanized, and has an effect of properly preventing the elastic rubber layer from being damaged during the restoration work so that it cannot perform its own role after the restoration work.

Claims (5)

In the bridge support is installed between the upper structure and the lower structure of the bridge; A restoration device installation step (S10) for installing a case having a lower portion sealed to receive water around the bridge bearing and having a transparent window, and installing heating means for heating water into the case; An upper structure raising step (S20) of raising the upper structure by installing a plurality of jacks on an upper surface of the lower structure toward one side of the case; A bridge bearing heating step (S30) for injecting water into the case in the elevated state of the upper structure and heating the injected water so that the inclined elastic rubber layer of the bridge bearing is restored to its original state; A visual inspection step (S40) for visually inspecting whether the elastic rubber layer is restored to its original state through the transparent window; Recognizing step (S50) of disassembling the restoring device to disassemble the restoring device installed in the periphery of the bridge bearing after discharging water after recognizing that the elastic rubber layer is restored to its original state through the visual inspection step (S40); And lowering the jack to lower the upper structure so that the upper structure is in an original state. The method of claim 1; The bridge is characterized in that it further comprises a temperature maintaining step (S31) to maintain the heated water for a predetermined time at a temperature of 60 ~ 70 ℃ between the bridge receiving heating step (S30) and visual inspection step (S40) How to restore the base. The method of claim 1; It further comprises a natural cooling step (S51) for maintaining the upper structure is raised for a predetermined time between the restoration device dismantling step (S50) and the upper structure descending step (S60) for a certain time to allow the bridge bearing to be naturally cooled. Method of restoration of bridge bearing In a bridge support (2) provided between an upper structure (3) and a lower structure (4) of a bridge; A water receiving part 10 provided with a case 11 having upper and lower sides and one side opened around the bridge bearing 2 so that the lower part of the case 11 is sealed and adhered to an upper surface of the lower structure 4; A visual inspection unit 20 provided with a transparent window 21 sealedly mounted to side and bottom surfaces thereof on an open side of the case 11; A water inlet 31 having an inlet opening and closing valve 32 is provided at an upper portion of the case 11, and a water outlet 33 having an outlet opening and closing valve 34 is provided at the lower side of the case 11. A water inlet and outlet unit 30; Restoration apparatus for a bridge support, characterized in that consisting of a water heater 40 is provided with a plurality of heater rods 41 connected to the power source 42 into the case (11). The method of claim 4; Temperature control unit consisting of a temperature sensor 51 provided in the case 11 and the control box 52 to control the electricity supply of the heater rod 41 by the detection of the temperature sensor 51. Bridge restoring device, characterized in that 50 is provided.