KR20240049704A - Bridge bearing with light weight for rapid construction, and rapid construction method for the same - Google Patents

Abstract

As a high-durability rubber pad in the form of a central groove is inserted into the rim-shaped port base member, the expansion of the high-durability rubber pad in the form of a groove in the center is suppressed by the border rim of the port base member, thereby supporting high loads and high durability rubber. Bridge bearings can be constructed quickly through weight reduction according to the pad. In addition, the durability of the bridge bearing can be increased by preventing corrosion by covering the piston member and port base member with a high-durability rubber pad in the form of a groove in the center. A lightweight bridge bearing that can be constructed and a rapid construction method thereof are provided.

Description

Lightweight bridge bearing capable of rapid construction and its rapid construction method {BRIDGE BEARING WITH LIGHT WEIGHT FOR RAPID CONSTRUCTION, AND RAPID CONSTRUCTION METHOD FOR THE SAME}

The present invention relates to a lightweight bridge bearing capable of rapid construction. More specifically, when constructing a bridge bearing that acts as a fixed end or movable end, a durable rubber pad in the form of a groove in the center is installed to support a high load and reduce weight by installing a durable rubber pad in the form of a groove in the center. This relates to a lightweight bridge bearing capable of rapid construction and its construction method.

In general, bridge bearings transmit the load acting on the bridge superstructure to the substructure and smoothly absorb displacement and deformation of the superstructure caused by temperature, drying shrinkage, creep, and movement and rotation of live loads. This refers to a mechanical device that minimizes secondary stress occurring within the bridge.

Figure 1 is a side view showing a bridge support installed on a general bridge.

As shown in Figure 1, a general bridge support 10 is installed between the lower structure and the upper structure of the bridge and supports the load of the upper structure while transmitting the load to the lower structure, for example, elastic It is used in various forms such as supports, pot supports, etc.

The functions of these bridge supports are divided into load transfer function, expansion function, and rotation function. Specifically, the load transfer function refers to the function of accurately transmitting the dead load and live load acting on the superstructure to the foundation ground of the substructure,

In addition, the expansion function refers to the function of absorbing expansion and contraction caused by load loading of the superstructure, temperature changes, concrete creep, drying shrinkage, etc., or smoothly absorbing the relative displacement between the superstructure and substructure during an earthquake.

In addition, the rotation function refers to the function of smoothly absorbing rotational displacement at the upper and lower holes, such as bending of the upper structure caused by the application of a load such as a live load.

These bridge supports are divided into movable end and fixed end depending on the direction of activity.

Specifically, the movable end refers to a support that can move in one or both directions, and the fixed end refers to a support that has limited movement in both directions.

In addition, such bridge supports include elastic supports that can be displaced or rotated by deformation of the elastic body, and port supports made of a rubber plate and a fluoroplastic sliding plate in a steel container.

In other words, bearings applied to bridges and other buildings may be composed of steel bearings or elastic bearings made of rubber.

For example, when a continuous load is applied to the upper steel plate of an elastic pad by a supporting object, as the load increases, the elastic rubber pad causes the tissue to sink due to compression and at the same time causes a bulge in which the lateral free surface is pushed out. As a result, the bearing capacity of the elastic support may be reduced.

Meanwhile, as a prior art related to bridge bearings, Japanese Patent No. 5,330,453 discloses an invention titled “Variable elastic constraint structure,” which will be described with reference to FIG. 2.

Figure 2 is a diagram showing a structure with variable elastic restraint according to the prior art.

Referring to Figure 2, in the case of a structure with variable elastic restraint according to the prior art,

In a state where the elastic body 23 is installed between the upper structure 21 and the lower structure 22 and is deformed by the load of the upper structure 21 with respect to the support device 20,

The convex portion 24 on the side of the elastic body 23 is in contact with the restraining surface 26a of the inner peripheral surface of the elastic deformable restraining body 26.

That is, before being installed between the upper structure 21 and the lower structure 22, the convex portion 24 on the side of the elastic body 23 is in a non-contact state between the restraining surface 26a of the inner peripheral surface of the elastic deformable restraining body 26. A gap is installed.

At this time, the upper structure 21 and the elastic deformable restraint body 26 may be coupled using a fixing means 26b such as a bolt or nut.

Specifically, when the support device 20 is installed between the upper structure 21} and the lower structure 22, the convex portion 24 on the side of the elastic body 23 is elastically deformed and constrained by the dead load of the upper structure 21. The inner peripheral surface of the sieve 26 is in contact with the constraining surface 26a.

In addition, when a normal load is applied, the convex portion 24 on the side of the elastic body 23 does not contact the restraining surface 26a on the inner peripheral surface of the elastic deformable restraining body 26,

When a high load exceeding the normal load is applied, the convex portion 24 on the side of the elastic body 23 comes into contact with the restraining surface 26a on the inner peripheral surface of the elastic deformable restraining body 26, and due to the higher high load, The bulging and deformed portions of the convex portion 24 and the concave portion 25 may be pressed to the restraining surface 26a.

According to the variable elastic restraint structure according to the prior art, in a support device supporting each main structure such as a building or bridge, it is possible to develop vertical spring performance appropriate for a wide range of inputs from low loads to high loads.

Meanwhile, as another prior art related to bridge bearings, Korea Registered Utility Model No. 20-222499 discloses a design titled "Lateral expansion suppression elastic bearing of bridge suspension device", which is explained with reference to FIG. 3. .

Figure 3 is a diagram showing a lateral expansion-suppressing elastic support of a bridge suspension device according to the prior art, where Figure 3 a) is a perspective view and Figure 3 b) is a lumbar cut perspective view.

As shown in a) of Figure 3, the lateral expansion suppression elastic support of the bridge suspension device according to the prior art is,

An external reinforcing member (60b) having the same function as the outer circumferential reinforcing member (60) is installed on the outer circumferential surface of the elastic pad (50),

By inserting and integrating a cylindrical internal reinforcing member (60a) with a relatively small diameter compared to the external reinforcing member (60b) inside,

Inside, as shown in b) of FIG. 3, an internal reinforcement pad 70a is formed, and an external reinforcement pad 70b is formed outside it, and the elastic pad 50 is two pads with independent functions. It consists of

At this time, when a load is applied from the upper steel plate 30, the deforming force applied to the elastic pad 50 is double blocked and supported by the external reinforcing member 60b and the internal reinforcing member 60a, so the elastic pad 50 ) It is possible to suppress the settlement and lateral bulge that occur in the area.

In addition, as shown in b) of Figure 3, a rubber coating layer (70c) is formed on the outer peripheral surface of the side of the elastic pad to which chemical fiber is applied, which not only improves aesthetics by maintaining a neat appearance, but also prevents dust, moisture, etc. It can prevent the inflow of foreign substances.

At this time, the arrangement of high-strength reinforcement means such as carbon fiber is,

As shown in a) of FIG. 3, in addition to the structure that reinforces only the outer peripheral surface of the elastic pad 50 in a cylindrical shape, such as the outer peripheral reinforcing member 60,

Depending on the size and purpose of the support, external reinforcing members (60b) and

In comparison, a cylindrical internal reinforcing member (60a) with a relatively small diameter is additionally inserted into the elastic pad (50), thereby forming the elastic pad through a plurality of external reinforcing members (60b) and internal reinforcing members (60a) with different diameters. An internal reinforcement pad (70a) and an external reinforcement pad (70b) may be formed on the outside and inside of (50), respectively.

In particular, by replacing the internal reinforcement pad (70a) with cylindrical lead or other high-strength elastomer, the load bearing capacity is improved and the effect of seismic isolation support is improved, and the different configurations of the central and outer parts of the load bearing point make it suitable for deflection deformation of the bridge. We can respond.

In other words, according to the lateral expansion-suppressing elastic bearing of the bridge suspension device according to the conventional technology, lateral physical deformation can be suppressed and reinforced by inserting and reinforcing reinforcing members using high-strength chemical fiber sheets such as carbon fiber in a cylindrical shape. Construct an elastic pad.

Accordingly, even if long-term load pressure is applied, it is possible to suppress the phenomenon of bulging of the side of the elastic support, and by replacing the center with cylindrical lead or other high-strength elastic material to reinforce it, the area of the support is reduced, seismic isolation and support functions are improved, The production, installation, and maintenance processes of the base can be simplified, and production costs can be reduced.

Meanwhile, as another prior art related to bridge bearings, Republic of Korea Patent No. 10-1913302 discloses an invention titled “Negative reaction force resistance spherical bearing,” which will be described with reference to FIG. 4.

Figure 4 is an exploded perspective view of a negative reaction resistance spherical support according to the prior art.

As shown in Figure 4, the negative reaction force resistance spherical support 80 according to the prior art,

It includes a first member 81 with a first spherical groove (81a) formed thereon, and a second member 83 disposed at a distance from the first member 81 while facing the first spherical groove (81a),

At this time, the bottom surface of the second member 83 is flat.

The first member 81 constitutes a lower plate installed on a pier or abutment, and a fastening hole 81b is formed in the first member 81 to enable it to be fixed to an anchor bolt or anchor nut installed on a pier or abutment. .

The second member 83 constitutes an upper plate that is attached to the bottom surface of the superstructure of the bridge, usually by welding or the like.

If the bottom of the bridge superstructure is made of a material that is not suitable for welding, separate fastening holes, etc. can be installed.

Additionally, the second member 83 may be indirectly installed on the bottom surface of the bridge superstructure through a member installed on the bottom surface of the bridge superstructure.

The second member 83 is provided with a hole 83a that is formed with a larger cross-section than the pin 84, which will be described later, and allows an inclination with respect to the pin 84, and a locking protrusion 83b installed outside the hole 83a. do.

Additionally, a sliding material 83c made of a stainless steel plate or the like is installed on the bottom of the second member 83.

In addition, the negative reaction force resistance spherical support 80 according to the prior art is provided with a first spherical bearing 82.

The first spherical bearing 82 is disposed between the first member 81 and the second member 83 to transfer the load between the first member 81 and the second member 83,

It is coupled to the first spherical groove (81a) and has a first convex spherical surface (82a) that contacts the first spherical groove (81a) to enable sliding movement.

At this time, the first convex spherical surface 82a is formed on the lower surface of the first spherical bearing 82. The upper surface of the first spherical bearing 82 is flat like the bottom surface of the second member 83.

In some cases, the bottom surface of the second member 83 and the top surface of the first spherical bearing 82 may also be formed into concave curved surfaces and convex curved surfaces that contact each other.

Here, the first spherical bearing 82 has through holes 82b formed vertically in the central portion.

In addition, the pin 84 functions to resist shear force when horizontal displacement occurs between the first member 81, the second member 83, and the first spherical bearing 82,

At this time, the lower end of the pin 84 is fixed to the first member 81, and the screw connection is performed using the male thread 84a formed on the lower end of the pin and the female thread 81c formed on the first member 81. 1 is fixed to member 81. In addition, the top of the pin 84 passes through the hole 83a and protrudes out of the hole, and a locking portion 84b that can be caught on the locking protrusion 83b is installed on the top of the pin 84 protruding outside the hole. do.

At this time, the locking portion 84b is screwed to the male thread 84a formed at the top of the pin 84 through the female thread 84c.

In addition, the elastic material 85 between the locking protrusion 83b and the locking portion 84b is preferably a polytron disc made of polyurethane with a hole in the center through which the pin 84 can pass.

At this time, when the elastic material 85 is interposed between the locking protrusion 83b and the locking portion 84b, even if a large negative reaction force acts on the second member 83 due to an earthquake, etc., the locking protrusion 83b and the locking portion ( Since there is no gap between 84b), the impact load between the locking protrusion 83b and the locking portion 84b can be reduced.

In addition, the spherical support 80 may additionally include a horizontal elastic body 85a installed between the outer side of the locking portion 84b and the inner wall of the groove formed above the locking protrusion 83b.

According to the negative reaction force-resisting spherical support according to the conventional technology,

Although the thickness of the lower plate or upper plate can be reduced, even when a large negative reaction force acts on the upper plate due to an earthquake, etc., the large impact due to the negative reaction force is not concentrated in the spherical bearing to a specific area, so there is a risk of the spherical bearing being deformed or damaged. There is no Even when a large horizontal shear force is applied to the pin due to an earthquake, etc., a large impact is not transmitted to the spherical bearing, preventing damage or deformation of the spherical bearing.

Meanwhile, in the case of bridge bearings, bridge bearings of various sizes can be used depending on the size of the applied load. For example, in the case of bridge bearings such as plate types, in order to ensure ease of maintenance and construction, If it has the same load resistance performance, its size must be optimized to be suitable for maintenance.

However, in the case of existing bridge bearings, there was a limitation in that a bridge bearing optimized for achieving this had not been introduced.

In addition, bridge supports must be manufactured according to the purpose, such as a movable end and a fixed end, but since each type is different and there is a limit to expandability, there is a need to provide a simple and lightweight bridge support that can solve this problem.

Japanese Patent No. 5,330,453 (Registration Date: August 2, 2013), Title of Invention: “Elastic Constraint Variable Structure” Republic of Korea Registered Utility Model No. 20-0222499 (registration date: February 21, 2001), designation name: "Lateral expansion suppression elastic support for bridge abutments" Republic of Korea Patent No. 10-1913302 (registration date: October 24, 2018), title of invention: “Negative reaction force resistance spherical support” Japanese Patent Laid-Open No. 2001-123416 (publication date: May 8, 2001), title of invention: “Friction sliding support” European Patent No. 0157605 (registration date: September 10, 1985), title of the invention: “Structural bearing assembly”

The technical problem to be achieved by the present invention to solve the above-described problems is to insert a high-durability rubber pad in the form of a central groove into a port base member in the form of a border rim, and to form a groove in the center by the border rim of the port base member. The purpose is to provide a lightweight bridge bearing capable of rapid construction and a rapid construction method that can support high loads by suppressing the expansion of the highly durable rubber pad.

Another technical problem to be achieved by the present invention is to provide a lightweight bridge bearing that can be rapidly constructed, which can increase the durability of the bridge bearing by preventing corrosion by covering and covering the piston member and the port base member with a high-durability rubber pad in the form of a groove in the central part. and to provide a rapid construction method thereof.

Another technical problem to be achieved by the present invention is to provide a lightweight bridge bearing capable of rapid construction that can suppress secondary reaction force by installing a hemispherical pin fixing nut and pin penetrating the central part of the upper plate of the bridge bearing to form a fixed end. and to provide a rapid construction method thereof.

Another technical problem to be achieved by the present invention is to form a movable end capable of moving in one direction by installing a hemispherical pin fixing nut in the long guide through hole of the upper plate of the bridge support, and to form a movable end capable of moving in one direction, and to form a molybdenum fixing nut on the surface of the hemispherical pin fixing nut. The purpose is to provide a lightweight bridge support that can be coated and rotated freely during movement, suppressing secondary reaction force, and enabling rapid construction, as well as a rapid construction method.

As a means of achieving the above-described technical problem, the lightweight bridge support capable of rapid construction according to the present invention is fixedly installed on the bridge substructure and includes a base plate that distributes the load applied to the bridge to the foundation ground along the substructure. ; A port base member installed on the base plate to support a vertical load; A high-durability rubber pad formed in the shape of a central groove and serving to support a rotating vertical load; A piston member that is seated in the central groove of the high-durability rubber pad and serves to support a vertical load; An upper plate coupled to the lower part of the bridge superstructure to correspond to the base plate and serving to distribute the load; A pin that is inserted through a through hole communicating with the upper plate, the piston member, the high-durability rubber pad, and the port base member and is fastened to the fastening hole of the base plate, and serves to support a horizontal load; and a pin fixing nut fastened to the top of the pin to fix the pin, wherein rapid construction of the bridge bearing is possible due to the lightweight of the high-durability rubber pad, and the upper plate is fixed to the bridge superstructure to support the bridge bearing. It is characterized by acting as a fixed end.

Here, the port base member has a cylindrical shape, has a rim formed on its outer peripheral surface, and a through hole through which a pin penetrates may be formed in its central part.

Here, the high-durability rubber pad is a rubber pad made of synthetic rubber and is formed in a cylindrical shape. The high-durability rubber pad covers the port base member and the piston member to prevent corrosion and increase durability inside the bridge support. You can.

Here, the pin has a thread formed at the lower end to be inserted into the fastening hole formed at the center of the base plate, and the thread is formed at the upper end so that a pin fixing nut is fastened thereto.

Here, the pin fixing nut has a hemispherical upper part and is installed in the central part of the upper plate 150 to suppress forward rotation and negative reaction force.

As a means of achieving the above-described technical problem, the lightweight bridge support capable of rapid construction according to the present invention is fixedly installed on the bridge substructure and includes a base plate that distributes the load applied to the bridge to the foundation ground along the substructure. ; A port base member installed on the base plate to support a vertical load; A high-durability rubber pad formed in the shape of a central groove and serving to support a rotating vertical load; A piston member that is seated in the central groove of the high-durability rubber pad and serves to support a vertical load; A fluoropolymer plate installed on the upper part of the piston member and below the upper plate to support and move the load; An upper plate having a long guide through hole formed in the center and being mounted on the lower part of the bridge superstructure to correspond to the base plate to distribute the load; A pin that is inserted through a through hole communicating with the upper plate, the fluoropolymer plate, the piston member, the high-durability rubber pad, and the port base member and is fastened to the fastening hole of the base plate, and serves to support a horizontal load; a pin fixing nut fastened to the top of the pin to secure the pin; And a stainless steel upper sliding plate that is attached to the bottom of the upper plate so that the bridge support acts as a movable end and plays the role of supporting and moving the load. Rapid construction of the bridge support is possible by reducing the weight of the high-durability rubber pad. And, the upper plate is simply mounted on the bridge superstructure and the bridge support acts as a movable end.

Here, the pin fixing nut has a hemispherical upper part, and can be easily moved in one direction while resisting negative reaction force by coating the surface with molybdenum.

Meanwhile, as another means of achieving the above-mentioned technical problem, the rapid construction method of a lightweight bridge bearing capable of rapid construction according to the present invention includes: a) a lightweight bridge bearing for the fixed end or a lightweight bridge bearing for the movable end to replace or construct a bridge bearing; Designing and manufacturing a bridge support; b) When replacing the bridge bearing, removing the existing bridge bearing installed between the lower structure and the upper structure; and c) rapidly constructing the lightweight bridge bearing for the fixed end or the lightweight bridge bearing for the movable end on the lower structure, wherein in the case of the lightweight bridge bearing for the fixed end in step c), it is fixed to the superstructure to act as a fixed end. In the case of a lightweight bridge support for a movable end, it is simply mounted on the superstructure to act as a movable end; In the case of the lightweight bridge support for the fixed end, a high-durability rubber pad is inserted into the lower port base member, and the expansion of the high-durability rubber pad in the form of a groove in the center is suppressed by the border rim of the port base member to support a high load, The high-durability rubber pad surrounds and covers the piston member and the port base member, and is characterized by resisting negative reaction force by applying a hemispherical pin fixing nut on the upper plate.

Here, in the case of the lightweight bridge support for the movable end, the upper plate is formed with a central guide through hole so that the pin fixing nut can move in one direction to suppress negative reaction force, and the lower port base member is provided with a highly durable rubber pad in the form of a central groove. When inserted, the expansion of the high-durability rubber pad is suppressed by the border rim of the port base member to support a high load. The high-durability rubber pad surrounds and covers the piston member and the port base member, and the pin fixing nut is attached to the upper part. It is formed in a hemispherical shape and is characterized by being coated with molybdenum to facilitate one-way movement while resisting negative reaction force.

According to the present invention, a high-durability rubber pad in the form of a central groove is inserted into a port base member in the form of a border rim, and the expansion of the high-durability rubber pad in the form of a groove in the center is suppressed by the border rim of the port base member, thereby maintaining high load capacity. can support, and rapid construction of bridge bearings is possible through weight reduction by these highly durable rubber pads.

According to the present invention, the durability of the bridge support can be increased by preventing corrosion by covering the piston member and the port base member with a highly durable rubber pad in the form of a central groove.

According to the present invention, the secondary reaction force can be suppressed by forming a fixed end by installing a hemispherical pin fixing nut and a pin penetrating the central part of the upper plate of the bridge support.

According to the present invention, a hemispherical pin fixing nut can be installed in the long guide through hole of the upper plate of the bridge support to form a movable end capable of moving in one direction, and the surface of the hemispherical pin fixing nut can be coated with molybdenum to enable rotation during movement. It is designed to be free, so the negative reaction force can be suppressed.

Figure 1 is a side view showing a bridge support installed on a general bridge.
Figure 2 is a diagram showing a structure with variable elastic restraint according to the prior art.
Figure 3 is a perspective view and a lumbar cut perspective view showing the lateral expansion-suppressing elastic support of a bridge seat device according to the prior art.
Figure 4 is an exploded perspective view of a negative reaction resistance spherical support according to the prior art.
Figure 5a is a cross-sectional view showing a fixed end of a lightweight bridge support capable of rapid construction according to the first embodiment of the present invention, and Figure 5b is a cut-away cross-sectional view.
Figure 6a is a perspective view showing a fixed end of a lightweight bridge support capable of rapid construction according to the first embodiment of the present invention, and Figure 6b is a cut-away perspective view.
Figure 7 is an exploded perspective view of a fixed end of a lightweight bridge support capable of rapid construction according to the first embodiment of the present invention.
Figure 8 is a view showing that a lightweight bridge support fixed end capable of rapid construction according to the first embodiment of the present invention is constructed on the bridge substructure.
Figure 9a is a perspective view showing a movable end of a lightweight bridge support capable of rapid construction according to a second embodiment of the present invention, and Figure 9b is a cut-away perspective view.
Figure 10 is an exploded perspective view of the movable end of a lightweight bridge support capable of rapid construction according to the second embodiment of the present invention.
Figure 11 is an exploded perspective view of the movable end of a lightweight bridge support capable of rapid construction according to a second embodiment of the present invention, and is a view showing the bottom of the upper plate.
Figures 12a to 12d are photographs to illustrate the material aging test of a high-durability rubber pad in a lightweight bridge bearing capable of rapid construction according to an embodiment of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts unrelated to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part "includes" a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

[First Example: Lightweight bridge support fixed end capable of rapid construction]

Figure 5a is a cross-sectional view showing a fixed end of a lightweight bridge support capable of rapid construction according to the first embodiment of the present invention, Figure 5b is a cut-away cross-sectional view, and Figure 6a is a lightweight bridge support capable of rapid construction according to the first embodiment of the present invention. It is a perspective view showing the fixed end of the bridge support, and Figure 6b is a cut-away perspective view.

Referring to FIGS. 5A, 5B, 6A, and 6B, the lightweight bridge support 100 capable of rapid construction according to the first embodiment of the present invention is

As a fixed end, a base plate (110), a pot base member (120), a high-durability rubber pad (130), a piston member (140), and a top plate (Top It consists of a plate (150), a pin (160), and a pin fix nut (170).

The base plate 110 is fixedly installed on the bridge substructure, as shown in FIGS. 5A, 5B, 6A, and 6B, and serves to distribute the load applied to the bridge to the foundation ground along the substructure.

That is, the base plate 110 is fixed to the bridge substructure through anchor bolts, etc. At this time, a fastening hole for a pin 160, which will be described later, is formed in the center of the base plate 110.

The port base member 320 is installed on the base plate 110 and serves to support a vertical load, as shown in FIGS. 5A, 5B, 6A, and 6B.

At this time, the port base member 320 has a cylindrical shape with a rim formed on its outer peripheral surface, and a through hole through which a pin 160, which will be described later, penetrates, is formed in its central part.

The high-durability rubber pad 130 is a rubber pad made of synthetic rubber with a central groove shape, as shown in FIGS. 5A, 5B, 6A, and 6B, and serves to support a rotational vertical load.

At this time, the high-durability rubber pad 130 has a cylindrical shape, and the concave portions on both sides of the bottom are inserted into the border rim protrusions of the port base member 320,

In addition, the central groove of the high-durability rubber pad 130 is inserted into the inner rim of the port base member 320.

In addition, the high-durability rubber pad 130 has a through hole through which the pin 160 penetrates is formed in the center thereof.

In addition, the high-durability rubber pad 130 surrounds the port base member 320 and the piston member 140 to form a coating to prevent corrosion.

The piston member 140 is seated in the central groove of the high-durability rubber pad 130 and serves to support a vertical load.

The upper plate 150 is coupled to the lower part of the bridge superstructure to correspond to the base plate 110, as shown in FIGS. 5A, 5B, 6A, and 6B, and serves to distribute the load.

In addition, the upper plate 150 has a through hole through which the pin 160 passes through its central portion.

At this time, as shown in FIG. 8, which will be described later, the upper plate 150 is fixed to the bridge superstructure so that the bridge support acts as a fixed end.

As shown in FIGS. 5A, 5B, 6A, and 6B, the pin 160 penetrates and communicates with the upper plate 150, the piston member 140, the high-durability rubber pad 130, and the port base member 320. It is inserted through the hole and fastened to the fastening hole of the base plate 110, and serves to support the horizontal load.

That is, the pin 160 has a thread formed at its lower end so that it is inserted into the fastening hole formed at the center of the base plate 110, and a thread is formed at its upper end so that the pin fixing nut 170 is fastened thereto.

The pin fixing nut 170 is a hemispherical nut fastened to the top of the pin 160, as shown in FIGS. 5A, 5B, 6A, and 6B, and serves to suppress negative reaction force.

Here, negative reaction refers to a force that acts in a direction that prevents upward deformation of the structure, and is also called upward force.

This negative reaction force is generated by a torsional moment, and for example, in order to suppress the negative reaction force when constructing a curved bridge, the girder outside the curve must be erected first.

The cause of this negative reaction force is when the curved center angle is large compared to the width of the bridge, when the flat square angle of the bridge is small, and when the bridge bearings are incorrectly placed whether it is a straight bridge, a curved bridge, or a square bridge.

In other words, as shown in FIGS. 6A and 6B, the sealed high-durability rubber pad suppresses external expansion and supports a high load, thereby reducing the weight.

In addition, the high-durability rubber pad 130 covers the port base member 320 and the piston member 140 to prevent corrosion and increase durability inside the bridge support.

In addition, rotation in all directions and negative reaction force (or upward force) can be suppressed by the hemispherical pin fixing nut 170 installed in the center of the upper plate 150.

Meanwhile, Figure 7 is an exploded perspective view of a fixed end of a lightweight bridge bearing capable of rapid construction according to the first embodiment of the present invention, and Figure 8 is a fixed end of a lightweight bridge bearing capable of rapid construction according to the first embodiment of the present invention. This is a drawing showing construction on the bridge substructure.

Referring to FIG. 7, the lightweight bridge support 100 capable of rapid construction according to the first embodiment of the present invention is a fixed end, and a high-durability rubber pad 130 is inserted into the lower port base member 320. The expansion of the central groove-shaped high-durability rubber pad 130 is suppressed by the border rim of the port base member 320 to support a high load, and weight reduction is possible due to the high-durability rubber pad 130.

In addition, the high-durability rubber pad 130 serves to surround and cover the piston member 140 and the port base member 320 to prevent corrosion, thereby increasing the durability of the inside of the bridge support.

In addition, the negative reaction force can be resisted and suppressed by applying a hemispherical pin fixing nut 170 disposed on the upper plate 150.

As shown in FIG. 8, the lightweight bridge support 100 capable of rapid construction according to the first embodiment of the present invention is disposed between the lower structure 210 and the upper structure 220,

The lower structure 210 is an abutment or pier, and the base plate 110 is fixed and installed on its upper surface through anchor bolts, etc.,

In addition, the upper structure 220 is a girder or slab. For example, as shown, the upper plate 150 is coupled to the bottom of an I-shaped steel girder, and the bridge support acts as a fixed end.

Ultimately, according to the lightweight bridge support fixed end capable of rapid construction according to the first embodiment of the present invention,

The internal structure of the bridge support is configured so that the edges of the rim shape protrude, and a port base member that supports vertical load is inserted into the durable rubber pad, and a piston member is inside the high durability rubber pad. By having a layered structure that is inserted,

The lateral pressure of the high-durability rubber pad that supports the load can prevent swelling, and can smoothly support high loads through weight reduction.

In addition, by forming a high-durability rubber pad in the form of a central groove, it is characterized by a structural shape that covers the port base member at the bottom and simultaneously surrounds the piston member inside. This structural feature prevents infinite expansion of the rubber pad by the border rim of the port base member, and can support a high load.

[Second Example: Movable stage of lightweight bridge support capable of rapid construction]

Figure 9a is a perspective view showing the operation of a lightweight bridge support capable of rapid construction according to the second embodiment of the present invention, and Figure 9b is a cut-away perspective view.

As shown in FIGS. 9A and 9B, the lightweight bridge support 300 capable of rapid construction according to the second embodiment of the present invention is

As a movable end, a base plate 310, a port base member 320, a high-durability rubber pad 330, a piston member 340, a fluoropolymer plate (PTFE) 350, an upper plate 360, and a pin 370. ) and a pin fixing nut 380 and a stainless steel upper sliding plate 390.

The base plate 310 is fixedly installed on the bridge substructure, as shown in FIGS. 9A and 9B, and serves to distribute the load applied to the bridge.

As shown in FIGS. 9A and 9B, the port base member 320 is installed on the base plate 310 and serves to support a vertical load. At this time, a border rim is formed on both sides of the port base member 320, and a through hole through which a pin 370, which will be described later, penetrates is formed in the center of the port base member 320.

As shown in FIGS. 9A and 9B, the high-durability rubber pad 330 is a rubber pad made of synthetic rubber with a central groove shape, and serves to support a rotational vertical load.

At this time, the concave portions on both sides of the high-durability rubber pad 330 are inserted into the outer protrusions of the border rim of the port base member 320, and the central grooves are inserted into the border rim of the port base member 320.

In addition, the high-durability rubber pad 330 has a through hole through which the pin 370 passes through its central portion.

In addition, the high-durability rubber pad 330 surrounds the port base member 320 and the piston member 340 to form a coating to prevent corrosion.

As shown in FIGS. 9A and 9B, the piston member 340 is seated in the central groove of the high-durability rubber pad 330 and serves to support a vertical load.

As shown in FIGS. 9A and 9B, the fluoroplastic plate (PTFE) 350 is installed on the upper part of the piston member 340 and the lower part of the upper plate 360 so that the bridge support acts as a movable end to support and move the load. It plays a role.

The upper plate 360 is coupled to the lower part of the bridge superstructure to correspond to the base plate 310, as shown in FIGS. 9A and 9B, and serves to distribute the load. Additionally, the upper plate 360 has a through hole through which the pin 370 passes through its central portion.

At this time, the upper plate 360 is not fixed to the bridge superstructure so that the bridge support acts as a movable end.

As shown in FIGS. 9A and 9B, the pin 370 includes the upper plate 360, the fluoroplastic plate 350, the piston member 340, the high-durability rubber pad 330, the port base member 320, and the base. It is inserted through a through hole that communicates with the plate 310, and serves to support a horizontal load.

That is, the pin 370 has a thread formed at its lower end so that it is inserted into the fastening hole formed at the center of the base plate 310, and a thread is formed at its upper end so that the pin fixing nut 380 is fastened thereto.

The pin fixing nut 380 is a hemispherical nut fastened to the top of the pin 370, as shown in FIGS. 9A and 9B, and serves to suppress negative reaction force.

As shown in FIGS. 9A and 9B, the stainless steel upper sliding plate 390 is attached to the bottom of the upper plate 360 so that the bridge support acts as a movable end and serves to support and move the load.

Specifically, Figure 10 is an exploded perspective view of the movable end of a lightweight bridge bearing capable of rapid construction according to a second embodiment of the present invention, and Figure 11 is a movable end of a lightweight bridge bearing capable of rapid construction according to the second embodiment of the present invention. This is an exploded perspective view showing the bottom of the upper plate.

As shown in Figure 10, the lightweight bridge support 300 capable of rapid construction according to the second embodiment of the present invention is installed on the upper part of the piston member 340 and the lower part of the upper plate 360 to act as a movable end. A fluoropolymer (PTFE) plate (350) is installed to support and move the load.

The upper plate 360 has a long guide through hole formed in the center, so that the hemispherical pin fixing nut 380 can move in one direction and suppress negative reaction force (or upward force).

In addition, as the high-durability rubber pad 330 in the form of a central groove is inserted into the lower port base member 320, expansion of the high-durability rubber pad 330 is suppressed by the border rim of the port base member 320. Supports high loads,

Since the high-durability rubber pad 330 makes it possible to reduce weight, the bridge support can be constructed quickly.

In addition, the high-durability rubber pad 330 serves to surround and cover the piston member 340 and the port base member 320, thereby increasing the durability of the inside of the bridge support through corrosion prevention.

In addition, the hemispherical pin fixing nut 380 resists negative reaction force and becomes easy to move in one direction by coating its surface with molybdenum.

As shown in Figure 11, the stainless steel upper sliding plate 390 is,

The bridge support is attached to the bottom of the upper plate 360 to act as a movable end and serves to support and move the load.

In addition, one-way movement is possible by seating the hemispherical pin fixing nut 380 in the long guide through hole (h2) in the center of the upper plate 360, and the surface of the hemispherical pin fixing nut 380 is coated with molybdenum. It is designed to rotate freely when moving, suppressing negative reaction force.

Ultimately, according to the second embodiment of the present invention, a high-durability rubber pad in the form of a central groove is inserted into a rim-shaped port base member, and the high-durability rubber pad in the form of a central groove is formed by the border rim of the port base member. By suppressing expansion, high loads can be supported, and bridge bearings can be constructed quickly through weight reduction through highly durable rubber pads.

In addition, the durability of the bridge support can be increased by preventing corrosion by covering the piston member and the port base member with a high-durability rubber pad in the form of a groove in the central part.

In addition, a hemispherical pin fixing nut can be installed in the long guide through hole of the upper plate of the bridge support to form a movable end capable of moving in one direction, and the surface of the hemispherical pin fixing nut is coated with molybdenum to allow free rotation during movement. This can suppress the negative reaction force.

[Rapid construction method for lightweight bridge supports]

In the rapid construction method of a lightweight bridge bearing according to an embodiment of the present invention, first, a lightweight bridge bearing 100 for the fixed end or a lightweight bridge bearing 300 for the movable end is designed and manufactured in order to replace or install a new bridge bearing.

Next, when replacing the bridge bearing, the existing bridge bearing installed between the lower structure and the upper structure is removed.

That is, in the case of a fixed end, the bridge support is separated from the already installed superstructure and then the superstructure is lifted.

Additionally, in the case of the movable end, the bridge support is lifted without separating it from the already installed superstructure.

Next, when replacing or installing a new bridge bearing, the lightweight bridge bearing 100 for the fixed end or the lightweight bridge bearing 300 for the movable end is rapidly constructed on the lower structure.

At this time, in the case of the lightweight bridge bearing 100 for the fixed end, it is fixed to the superstructure to act as a fixed end, and in the case of the lightweight bridge bearing 300 for the movable end, it is simply mounted on the superstructure to act as the movable end.

Specifically, in the case of the lightweight bridge support 100 for the fixed end,

As the high-durability rubber pad 130 is inserted into the lower port base member 320, the expansion of the high-durability rubber pad 130 in the form of a groove in the center is suppressed by the border rim of the port base member 320 to support a high load. It is possible to reduce weight while

The high-durability rubber pad 130 serves to surround and cover the piston member 140 and the port base member 320, thereby increasing the durability of the inside of the bridge support by preventing corrosion, and the hemispherical pin fixing nut 170 You can resist negative reaction force by applying .

In addition, in the case of the lightweight bridge support 300 for the movable end,

The upper plate 360 has a central guide through hole formed so that the pin fixing nut 380 can move in one direction to suppress negative reaction force (uplift force),

In addition, as the high-durability rubber pad 330 in the form of a central groove is inserted into the lower port base member 320, expansion of the high-durability rubber pad 330 is suppressed by the border rim of the port base member 320. It is possible to reduce weight while supporting high loads. In addition, the high-durability rubber pad 330 can prevent corrosion by covering the piston member and the port base member,

Accordingly, the durability of the inside of the bridge support can be increased, and the pin fixing nut 380 is formed in a hemispherical upper part, and is coated with molybdenum to facilitate one-directional movement while resisting negative reaction force.

Ultimately, according to the rapid construction method of a lightweight bridge bearing according to an embodiment of the present invention, a rim-shaped bridge bearing is constructed in an internal laminated form,

The internal structure of the bridge support is configured so that the edges of the rim shape protrude, and the port base member that supports the vertical load is inserted into the groove-shaped high durability rubber pad in the center,

By having a laminated structure in which a piston member is inserted inside the high-durability rubber pad, it is possible to prevent the phenomenon of swelling due to the lateral pressure of the high-durability rubber pad that supports the load, and smoothly supports high loads through weight reduction.

In addition, a hemispherical pin fixing nut is installed to penetrate the central part of the upper plate to form a fixed end, or

Alternatively, a hemispherical pin fixing nut can be installed in the long guide through hole and can move in one direction, and the hemispherical pin fixing nut can be configured with a movable end that is free to rotate during movement by coating the surface with molybdenum.

In addition, the high-durability rubber pad in the form of a groove in the center is an elastic synthetic rubber material that can smoothly support high loads, and by covering the inside of the internal bridge support with synthetic rubber material, it prevents corrosion and improves the durability of the bridge support. You can.

In addition, a stainless steel upper sliding plate 390 is attached to the bottom of the upper plate 360 so that the bridge support acts as a movable end,

In addition, the fluoropolymer plate 350 is located at the portion in contact with the stainless steel upper sliding plate 390, thereby supporting and moving the load.

[High durability rubber pad aging test]

Figures 12a to 12d are photographs to illustrate the material aging test of a high-durability rubber pad in a lightweight bridge bearing capable of rapid construction according to an embodiment of the present invention.

A material aging test was performed on a high-durability rubber pad in a lightweight bridge bearing capable of rapid construction according to an embodiment of the present invention.

These high-durability rubber pads are made of synthetic rubber material. Specifically, the durability of synthetic rubber is guaranteed for more than 100 years, and its durability has been verified and used through ozone tests, etc.

For example, in the case of the tensile strength of synthetic rubber, the durability life is estimated to be 229 years.

Specifically, as shown in FIGS. 12A to 12D, the reliability of the overall durability of synthetic rubber can be verified and proven through accelerated heat aging tests and cold resistance tests of synthetic rubber materials.

In other words, synthetic rubber material can prevent corrosion by covering the internal bridge bearing and can be used as a material to support loads.

Ultimately, according to an embodiment of the present invention, the internal structure of the bridge support is configured so that the edge of the rim shape protrudes, so that the port base member supporting the vertical load is inserted into the central groove-shaped high durability rubber pad made of synthetic rubber. By having a laminated structure where the piston member is inserted inside the high-durability rubber pad,

The lateral pressure of the high-durability rubber pad that supports the load can prevent swelling, and high loads can be smoothly supported by reducing the weight of the bridge bearing.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

100: Lightweight bridge support (fixed end)
110: base plate 120: port base member
130: High durability rubber pad 140: Piston member
150: upper plate 160: pin
170: Pin fixing nut
210: substructure 220: superstructure
300: Lightweight bridge support (movable end)
310: Base plate 320: Port base member
330: High durability rubber pad 340: Piston member
350: Fluoropolymer plate (PTFE) 360: Top plate
370: Pin 380: Pin fixing nut
390: Stainless steel upper sliding plate

Claims (16)

A base plate 110 that is fixedly installed on the bridge substructure and distributes the load applied to the bridge to the foundation ground along the substructure;
A port base member 320 installed on the base plate 110 to support a vertical load;
A high-durability rubber pad (130) formed in a groove shape at the center and serving to support a rotating vertical load;
A piston member 140 that is seated in the central groove of the high-durability rubber pad 130 and serves to support a vertical load;
An upper plate 150 coupled to the lower part of the bridge superstructure to correspond to the base plate 110 and serving to distribute the load;
It is inserted through a through hole communicating with the upper plate 150, the piston member 140, the high-durability rubber pad 130, and the port base member 320, and is fastened to the fastening hole of the base plate 110, horizontally. A pin (160) that serves to support the load; and
It includes a pin fixing nut 170 fastened to the top of the pin 160 to secure the pin 160,
Rapid construction of the bridge bearing is possible by reducing the weight of the high-durability rubber pad 130, and the upper plate 150 is fixed to the bridge upper structure so that the bridge bearing acts as a fixed end. Lightweight bridge support. According to paragraph 1,
The port base member 320 is a lightweight bridge support capable of rapid construction, characterized in that it has a cylindrical shape, a rim is formed on the outer peripheral surface, and a through hole through which a pin 160 penetrates is formed in the center thereof. According to paragraph 1,
The high-durability rubber pad 130 is a rubber pad made of synthetic rubber and is formed in a cylindrical shape. The high-durability rubber pad 130 covers the port base member 320 and the piston member 140 to prevent corrosion. A lightweight bridge bearing capable of rapid construction, characterized by increasing the durability of the interior of the bridge bearing. According to paragraph 1,
The pin 160 has a thread formed at the lower end and is inserted into and fastened to the fastening hole formed at the center of the base plate 110, and a thread is formed at the upper end so that the pin fixing nut 170 is fastened. A lightweight bridge support capable of this. According to paragraph 1,
The pin fixing nut 170 is a lightweight bridge support capable of rapid construction, characterized in that the upper part is formed in a hemispherical shape and is installed in the central part of the upper plate 150 to suppress forward rotation and secondary reaction force (or upward force). . A base plate 310 that is fixedly installed on the bridge substructure and distributes the load applied to the bridge to the foundation ground along the substructure;
A port base member 320 installed on the base plate 310 to support a vertical load;
A high-durability rubber pad 330 that is formed in the form of a central groove and serves to support a rotating vertical load;
A piston member 340 that is seated in the central groove of the high-durability rubber pad 330 and serves to support a vertical load;
A fluoropolymer (PTFE) plate 350 installed on the upper part of the piston member 340 and below the upper plate 360 to support and move the load;
An upper plate 360 having a long guide through hole formed in the center and mounted on the lower part of the bridge superstructure to correspond to the base plate 310 to distribute the load;
It is inserted through a through hole communicating with the upper plate 360, the fluoropolymer plate 350, the piston member 340, the high-durability rubber pad 330, and the port base member 320 to form the base plate 310. A pin (370) fastened to the fastening hole and serving to support a horizontal load;
A pin fixing nut 380 fastened to the top of the pin 370 to secure the pin 370; and
It includes a stainless steel upper sliding plate 390 that is attached to the bottom of the upper plate 360 so that the bridge support acts as a movable end and serves to support and move the load, and to reduce the weight of the high durability rubber pad 330. A lightweight bridge bearing capable of rapid construction, characterized in that the upper plate 360 is simply mounted on the bridge superstructure and acts as a movable end. According to clause 6,
The pin fixing nut 380 is a lightweight bridge support capable of rapid construction, characterized in that the upper part is formed in a hemispherical shape, and the surface is coated with molybdenum to facilitate one-way movement while resisting negative reaction force. According to clause 6,
The port base member 320 is a lightweight bridge support capable of rapid construction, characterized in that it has a cylindrical shape, a rim is formed on the outer peripheral surface, and a through hole through which a pin 370 penetrates is formed in the center thereof. According to clause 6,
The high-durability rubber pad 330 is a rubber pad made of synthetic rubber and is formed in a cylindrical shape. The high-durability rubber pad 330 covers the port base member 320 and the piston member 340 to prevent corrosion. A lightweight bridge bearing capable of rapid construction, characterized by increasing the durability of the interior of the bridge bearing. According to clause 6,
The pin 370 is threaded at the lower end and inserted into the fastening hole formed at the center of the base plate 310, and the pin 370 is threaded at the upper end so that the pin fixing nut 380 is fastened to it. A lightweight bridge support capable of this. a) Designing and manufacturing a lightweight bridge support (100) for the fixed end or a lightweight bridge support (300) for the movable end in order to replace or install a new bridge support;
b) When replacing the bridge bearing, removing the existing bridge bearing installed between the lower structure and the upper structure; and
c) rapidly constructing the lightweight bridge bearing 100 for the fixed end or the lightweight bridge bearing 300 for the movable end on the lower structure; Including,
In step c), in the case of the lightweight bridge support 100 for the fixed end, it is fixed to the superstructure to act as a fixed end, and in the case of the lightweight bridge support 300 for the movable end, it is simply mounted on the superstructure to act as the movable end;
In the case of the lightweight bridge support 100 for the fixed end, a high-durability rubber pad 130 is inserted into the lower port base member 320, and a high-durability rubber pad 130 is formed in the form of a central groove by the border rim of the port base member 320. The expansion of the pad 130 is suppressed to support a high load, and the high-durability rubber pad 130 surrounds and covers the piston member 140 and the port base member 320, and has a hemispherical pin on the upper plate 150. A rapid construction method for a lightweight bridge support capable of rapid construction, characterized by resisting negative reaction force by applying a fixing nut (170). According to clause 11,
In the case of the lightweight bridge support 300 for the movable end, the upper plate 360 is formed with a central guide through hole so that the pin fixing nut 380 can move in one direction to suppress negative reaction force (uplift force),
As the high-durability rubber pad 330 in the form of a central groove is inserted into the lower port base member 320, expansion of the high-durability rubber pad 330 is suppressed by the border rim of the port base member 320, thereby supporting high load capacity. supports,
The high-durability rubber pad 330 surrounds and covers the piston member and the port base member, and the pin fixing nut 380 has a hemispherical upper part, and is coated with molybdenum to facilitate one-way movement while resisting negative reaction force. A rapid construction method for lightweight bridge bearings that allows rapid construction. The method of claim 11, wherein the lightweight bridge support (100) for the fixed end is,
A base plate 110 that is fixedly installed on the bridge substructure and distributes the load applied to the bridge to the foundation ground along the substructure;
A port base member 320 installed on the base plate 110 to support a vertical load;
A high-durability rubber pad (130) formed in the form of a central groove and serving to support a rotating vertical load;
A piston member 140 that is seated in the central groove of the high-durability rubber pad 130 and serves to support a vertical load;
An upper plate 150 coupled to the lower part of the bridge superstructure to correspond to the base plate 110 and serving to distribute the load;
It is inserted through a through hole communicating with the upper plate 150, the piston member 140, the high-durability rubber pad 130, and the port base member 320, and is fastened to the fastening hole of the base plate 110, horizontally. A pin (160) that serves to support the load; and
A rapid construction method for a lightweight bridge support capable of rapid construction, including a pin fixing nut 170 fastened to the top of the pin 160 to secure the pin 160. According to clause 13,
The high-durability rubber pad 130 is a rubber pad made of synthetic rubber and is formed in a cylindrical shape. The high-durability rubber pad 130 covers the port base member 320 and the piston member 140 to prevent corrosion. A rapid construction method for a lightweight bridge bearing that allows rapid construction, characterized by increasing the durability of the interior of the bridge bearing. The method of claim 11, wherein the lightweight bridge support 300 for the movable end is,
A base plate 310 that is fixedly installed on the bridge substructure and distributes the load applied to the bridge to the foundation ground along the substructure;
A port base member 320 installed on the base plate 310 to support a vertical load;
A high-durability rubber pad 330 that is formed in the form of a central groove and serves to support a rotating vertical load;
A piston member 340 that is seated in the central groove of the high-durability rubber pad 330 and serves to support a vertical load;
A fluoropolymer (PTFE) plate 350 installed on the upper part of the piston member 340 and below the upper plate 360 to support and move the load;
An upper plate 360 having a long guide through hole formed in the center and mounted on the lower part of the bridge superstructure to correspond to the base plate 310 to distribute the load;
It is inserted through a through hole communicating with the upper plate 360, the fluoroplastic plate 350, the piston member 340, the high-durability rubber pad 330, and the port base member 320 to form the base plate 310. A pin (370) fastened to the fastening hole and serving to support a horizontal load;
A pin fixing nut 380 fastened to the top of the pin 370 to secure the pin 370; and
A rapid construction method for a lightweight bridge bearing that allows rapid construction, including a stainless steel upper sliding plate (390) that is attached to the bottom of the upper plate (360) and serves to support and move the load so that the bridge bearing acts as a movable end. According to clause 15,
The pin fixing nut 380 is formed in a hemispherical upper part, and molybdenum is coated on its surface to facilitate one-directional movement while resisting negative reaction force. A rapid construction method for a lightweight bridge bearing capable of rapid construction.