KR100339095B1 - Guard bearing for preventing removement of slab and constructing method thereof - Google Patents

Abstract

The present invention relates to an anti-falling guide bearing and a method for installing the same, which are installed to prevent the top plate of the bridge from falling down by falling off from a bridge device or bridge (shift) supporting it.

The present invention supports the support angle is installed to be opposed to the predetermined distance spaced apart from the top of the upper plate, the insertion axis is protruded between the support angle at the top of the pier, and the iron core is inserted between the support angle and the insertion axis Guide bearing for preventing falling, characterized in that the inner pad made of rubber and its installation method, having a self-damping function to prevent falling properly, in particular to simplify the configuration of the device installed as a seismic or earthquake-resistant function It is an effective invention that can be applied to any bridge, reducing the cost.

Description

Guard bearing for preventing removal of slab and constructing method

The present invention relates to an anti-falling guide bearing and a method for installing the same, which are installed to prevent the top plate of the bridge from falling down by falling off from a bridge device or bridge (shift) supporting it.

The bridge is composed of pier or alternating with slab (slab) used as a road for people or vehicles to pass, but in large bridges, the bridge or alternating side of the bridge is attenuated or canceled by attenuating or canceling the displacement and load of the deck where various deformation loads act A bridge device is installed between the upper plate and the bridge (shift) to prevent the impact load from being transmitted to the ground. Some advanced bridge devices are used for seismic or seismic isolation for proper functioning under heavy loads and large displacements such as earthquakes. Bridge devices are also being developed, but they have no function to prevent the upper plate from moving away from the bridge device or bridge (shift) due to the large displacement. In particular, there has been no earthquake large enough to break the bridge in Korea. There is a lack of contrast.

In recent years, however, many bridge structures have been researched and developed to counter the earthquake by witnessing disasters caused by earthquakes in neighboring countries. The fall prevention device is divided into a structure for connecting the girder and the piers of the upper plate and a structure for forming projections in the girder or the pier and a structure for connecting the girder of the opposing top plate to each other. The first type of the type is selected, but until now, there has been no research of this type in Korea, and the second type has been adopted as shown in FIG. 5A, which has been installed in some bridges. The end stopper 11 which protrudes integrally downward at one end is formed, and the said end of the pier 2 is The anti-falling prevention structure formed by forming the protrusion 22 which protrudes integrally upward from the counter 11 corresponding part is provided. As another conventional invention, as shown in FIG. 5B, the lower surface of the upper plate 1 is provided at one end. Forming a triangular-shaped guide-type stopper 12 projecting integrally downward and spaced apart by a predetermined distance, and forming a projection 22 projecting upwardly so as to be inserted between the separation distances of the guide-type stopper 12 It aims to provide a mechanism for prevention of stigma.

In the conventional devised electron structured as described above, if the top plate 1 is pushed by an earthquake or the like (left side in the drawing), the stopper 11 and the protrusion 22 are prevented from being pushed by each other, thereby preventing falling. In the latter, the projection 22 on the side of the pier 2 is instrumented between the guide-type stoppers 12 so as to limit the pushing distance, thereby preventing falling. In consideration of the stopper (11, 12) and the projection 22 is installed to be spaced apart a predetermined distance.

However, the fall prevention structure is provided to prevent the top plate 1 from deviating from the pier (shift) (2) during the earthquake, or to prevent the girder of the top plate (1) from deviating from the structural point of the pier (2). The stoppers 11 and 12 and the projections 22 are installed at the end of the upper plate 1 or the pier 2, and must be supported during heavy loads such as an earthquake to achieve a predetermined purpose. Normally, it must be planted deeply to reach the reinforcement bar 21 inside, and depending on the load, the strength of the design can be maintained because the design strength can be maintained by tightly coupling with the reinforcement bar 21 and welding. However, since the stoppers 11 and 12 or the protrusions 22 are rigid bodies, there is no offset function of damping the deformation force. Therefore, when the top plate 1 is pushed to one side by a heavy load, the stopper 11 12 and projection 22 are shockingly It does not beat the catalyst or damage is to be the end of the top plate (1) and piers (2) it is not damaged under the treat of earthquakes nakgyo protection must be guaranteed.

The present invention has been made by improving the above-described problems. First, the invention has a self-attenuation function as an anti-falling body to prevent falling-off even under displacement of a heavy load, and the burden of seismic seismic seismic function imparted to the second teaching device. To reduce the configuration cost of the bridge device to reduce, the third installation is easy and high durability, and the fourth was devised to be applicable to any bridge, as described in detail according to the drawings as follows.

1 is a diagram illustrating a configuration state of the present invention;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a schematic view of the installation process of the present invention,

Figure 4 is a schematic cross-sectional view of the installation state of the present invention,

5 is a schematic cross-sectional view of an installation state of the present invention.

* Explanation of symbols for the main parts of the drawings

1 --- tops

11 --- End stopper 12 --- Guided stopper

2 --- Pier (shift)

21 --- Lifting bar 22 --- Turning

3 --- guide bearing

31 --- Support Angle 32 --- Insertion Shaft

33 --- Raver Pad

331 --- Iron Core 332 --- Plate

34 --- bolt 35 --- nut

36 --- perforated

4 --- Chair Unit

1 is an exploded view of a configuration state of a guide bearing for preventing falling of the present invention with an insertion shaft 32 as an H-shaped steel, and FIG. 2 is a cross-sectional view taken along the AA of FIG. 1 in an assembled state as a configuration cross-sectional view of the present invention. to be.

The present invention is a pair of support angles (31, 31) are installed so as to be opposed to a predetermined distance so as to be integrated at the bottom of the upper plate (1), so as to project between the support angle (31, 31) from the top of the piers (2) Guide bearing for preventing falling, characterized in that made of a rubber pad (33) embedded therein the insertion shaft 32, the iron core 331 is inserted between the support angle (31) and the insertion shaft (32) ( 3).

In the above-described configuration, plates (332, 332) are attached to both ends of each of the rubber pads (33) and fastened by bolts (34) between the plates (332), the support angles (31), and the insertion shaft (32). It is more preferable if it is characterized by the above-mentioned.

EXAMPLE

3 is a state diagram schematically showing an embodiment of the present invention according to a process.

An installation specification of the present invention is shown as an example as follows.

Example 1

After firmly binding the lower ends of the reinforcing bars 21 and the insertion shaft 32 at a predetermined position of the piers 2 where the reinforcing bars 21 are disposed (FIG. 3A state), the concrete is poured according to the design specifications. (2) is constructed (FIG. 3B state).

The rubber pads 33 and 33 are fixed to the upper both sides of the insertion shaft 32, and the bolt 34 protruding from the plate 332 is fastened to the insertion shaft 32 (FIG. 3C).

The lower ends of the L-shaped support angles 31 are fastened to the nuts 35 by bolts 34 protruding from the plates 332 and 332 positioned at both ends of the rubber pads 33.

The upper end of each of the support angles 31 is embedded in the upper plate 1 or fastened by bolts 34 embedded in the upper plate 1, thereby completing (the state of FIG. 4D).

Example 2

In the same manner as in Example 1, the insertion of the insertion shaft 32 is performed by drilling 36 at a predetermined position of the completed piers 2 (FIG. 3D state), and inserting the insertion shaft ( 32) is planted to cure mortar without shrinkage (Fig. 3b state).

The present invention made as described above functions as follows.

The support angle 31 is integrally installed at the lower end of the upper plate 1, for example, may be integrally welded between the upper surface of the support angle 31 and the H beams of the lower surface of the upper plate 1, or the upper plate 1. Depending on the structure of the angular shape, for example, a member in the form of a straight line or channel on the lower surface of the upper plate (1) or directly attached to the support member of the lower surface may be substituted as a function of the support angle 31 of the present invention, that is, The support angle 31 refers to a member installed to protrude downward from the upper plate 1, and as an example, preferably, the bolt 34 is embedded in the upper plate 1 and protrudes as described in the embodiment. By adopting a structure that penetrates the upper surface of the L-shaped support angle 31 shown in the figure and is fastened with a nut 35, the assembly / extraction is facilitated, thereby making maintenance and maintenance easier. In addition, the insertion shaft 32 is also embedded in the piers 2 to protrude, that is, the support angle 31 is integrated with the top plate 1 and the insertion shaft 32 is integrated with the piers 2 so that the top plate 1 ) Is relatively displaced relative to the pier (2) acts as a relative displacement between the support angle 31 and the insertion axis (32). However, since the rubber shaft 33 is embedded with the iron core 331 between the support shafts 31 installed opposite to each other, the above-described relative displacement is attenuated by the rubber pad 33. Or offset to cushion shock displacement, and in particular, the support angle 31 and the insertion shaft 32 are firmly fixed to the top plate 1 and the pier 2, so that the rubber pad 33 can compress more than a predetermined distance. It is possible to prevent the upper plate 1 from falling off the pier 2 or the throttling device 4 so that the first plate 1 cannot slip and fall. Of course, the rubber pad 33 used at this time is a structure that is loaded with a core core 331 in a hard rubber material is preferred as a large elastic strength and easy fabrication, but other well-known structure is planted in the shape of various types of lead in the hard rubber material It can be replaced by a method of giving, etc., it is obvious that such modifications can not be out of the technical scope of the present invention.

In addition, in another configuration of the present invention, the plates 332 and 332 are attached to both ends of the rubber pad 33 to be fastened by the support angle 31 and the insertion shaft 32 and the bolt 34, which are assembled / taken out. It is intended to be easy to install, maintain and repair for convenience.

Guide bearing (3) of the present invention can be installed in two ways, the first, as described in the first embodiment, to reflect the first design to install a bridge employing the guide bearing (3) of the present invention By way of installation, the installation shaft 32 of the guide bearing 3 is also installed at the time of installation of the reinforcing bar 21 of the pier (2) by connecting and combining the reinforcing bar 21 and the inserting shaft 32 to be installed. If, after pouring concrete to cure, the insertion shaft 32 is integrated with the piers (2) to obtain a solid support force, and then attached to the insertion shaft 32, the rubber pad 33 and the rubber pad ( After attaching the port angle 31 on both sides of 33), the upper surface of the support angle 31 was finally attached to the upper plate 1, and this specification is not necessarily possible to be installed after the back and forth. According to the size of the structure It is also apparent that the order of specifications may be changed, and the inversion of the order does not depart from the technical scope of the present invention.

As the method of installing the guide bearing 3 of the present invention, the second is that the installation of the guide bearing 3 is not reflected in the initial design, which is changed only in the installation method of the initial insertion shaft 32, as described in Example 2. That is, the drill hole 36 is drilled at a predetermined position of the completed piers 2 to be the insertion hole of the insertion shaft 32, and the insertion shaft 32 is inserted into the drilling hole 36, and the gap is inverted mortar. After completing the embedding of the insertion shaft 32 by pouring the other steps, the other steps are the same as in the above-described first embodiment.

The present invention relates to a guide bearing for realizing and applying a fallout prevention device, which is hardly studied in Korea, and has a self-attenuation function to properly prevent fallout, and in particular, a constitution device installed as a seismic isolation or seismic function. It is an effective invention that can be applied to any bridge by reducing the cost by simplifying.

Claims (4)

A pair of support angles 31 and 31 which are installed to face each other at a predetermined distance so as to be attached and integrated by a plurality of bolts 34 at the lower end of the upper plate 1, An insertion shaft 32 embedded in the upper end of the piers 2 to protrude between the support angles 31 and 31; The support angles 31 and the insertion shaft 32 are respectively inserted between the bolts 34 and nuts 35 to be fastened to each other, the both ends of the plate 332 and the iron core 331 inside This embedded pad (33) Guide bearing for falling prevention, characterized in that consisting of. delete After firmly binding the lower end of the reinforcing bar 21 and the insertion shaft 32 at a predetermined position of the pier 2 where the reinforcing bar 21 is disposed, the concrete is poured according to the design specification to build the pier 2. and; Fixing the rubber pads (33, 33) on the upper both sides of the insertion shaft (32) and fastening bolts (34) protruding from the plate (332) to the insertion shaft (32); Fastening with nuts (35) by penetrating the lower ends of the L-shaped support angles (31) with bolts (34) protruding from the plates (332, 332) positioned at both ends of the rubber pads (33); Installation method of the guide bearing for preventing falling, characterized in that the upper end of each support angle (31) is embedded in the upper plate (1) or fastened with a bolt (34) embedded in the upper plate (1). Drilling at a predetermined position of the completed piers (2), planting an insertion shaft (32) in this hole, and placing and curing non-axial mortar; Fixing the rubber pads (33, 33) on the upper both sides of the insertion shaft (32) and fastening bolts (34) protruding from the plate (332) to the insertion shaft (32); Fastening with nuts (35) by penetrating the lower ends of the L-shaped support angles (31) with bolts (34) protruding from the plates (332, 332) positioned at both ends of the rubber pads (33); The upper end of each of the support angles 31 is installed in the upper plate (1) or fastened with a bolt (34) embedded in the upper plate (1), the installation method of the fall prevention prevention guide bearing, characterized in that completed.