KR101536756B1 - a bridge bearing arrangment structure for a vertical offset of bridge - Google Patents

Abstract

The present invention relates to a bridge structure comprising a pier 100 that is a bridge substructure, a slab 200 that is a bridge overhead structure, and a frictional punch-type seismic isolation pedestal 300 that supports the slabs from the upper surface of the bridge pier, The friction pendulum type earthquake isolator support structure according to claim 1, wherein the frictional punch-type earthquake isolator support structure is formed by a telescopic joint device (400) Shaped seismic isolation pedestal 300 is separated from and installed to a plane friction pendulous seismic isolation base 320 and a spherical friction pendulous seismic isolation platform 340 that can be curved, 400) is installed, or a plane frictional punch-type earthquake-isolator (320) is installed at the ends of both ends of the slab or between the slab and the slab And a spherical friction pendulous seismic isolation pedestal 340 is installed on the upper surface of the pier 100 where the expansion joint device 400 is not installed so that the horizontal displacement and the vertical movement are accommodated when the slab 200 is displaced .
The present invention has the effect of maintaining the same smooth surface at both ends of the slab or between the slab and the slab, even if a displacement force is generated in the slab, which is the upper structure of the bridge, due to an earthquake or the like.

Description

[0001] The present invention relates to a bridge structure for a vertical displacement of a bridge,

The present invention relates to a frictional punch-type seismic isolation arrangement structure in a bridge structure, and more particularly, to a structure in which a plurality of slabs constituting a bridge overhead structure are subjected to a planar friction pendulum- Friction pendulum earthquake isolation considering the vertical steps of the bridge structure to ensure that the ends of the slab or the joints of the slab and the slab are always kept in the same horizontal position without the occurrence of the vertical step by the arrangement of the bearing and the spherical friction pendulum- To a support arrangement structure.

Generally, the bridge is deformed due to expansion and contraction caused by temperature difference due to temperature change, drying shrinkage due to concrete characteristics, creep, wind load, and activation.

Accordingly, in order to prevent the deformation of the bridge superstructure, the bridge is provided between the upper structure and the lower structure of the bridge to smoothly transfer the load according to the upper structure of the bridge to the pier or alternation, The durability and stability of the bridge are maintained by accommodating the rotation and the horizontal displacement.

Further, a plurality of bridge top plates (also referred to as slabs) having a predetermined length can be flexibly and flexibly connected to each other through a stretch jointing device so as to smoothly accommodate contraction due to temperature change during vehicle passing, expansion and contraction of the upper structure, As shown in FIG.

That is, the above-mentioned bridges are installed for the expansion and contraction of the upper plate and the upper plate, the bridge supporter supporting the upper plate on the alternate upper surface with the bridge pier, And an expansion joint.

Because of the climatic characteristics of the seismic bridge, the seismic bridge with a fixed and movable end has been commonly used.

However, in the case of the above-mentioned earthquake-proof bridge, there is an unreasonable problem that the inertia force of the upper structure concentrates the seismic force on the fixed end bridge pier and the fixed end bearing as the seismic force is taken into consideration.

Recently, an earthquake isolation bridge is applied to reduce the seismic force and reduce the construction cost by distributing seismic force to all piers.

Meanwhile, in the case of the above-mentioned bridge type upper structure, in the case of an earthquake-proof bridge according to the temperature change, a fixed end and a movable end are provided so that expansion or contraction occurs from both ends of the upper structure slab or between the slab and slab, In the case of isolation bases, the entire bridge support is installed as a bidirectional movable end, so that the expansion or contraction occurs at both ends of the slab or between the slab and the slab based on the center of the upper structure.

For example, when the upper structure is expanded or contracted due to a temperature change, relative displacement is not generated between the bridge piers and the upper structure at the center of the upper bridge structure, A large relative displacement occurs due to the extension of the slab between the slabs.

However, in the past, when considering the fact that the relative displacement between the bridge piers and the upper structure is different for each section of the bridge, when the bridge support of the same structure is applied and the expansion, seismic load or wind load of the upper structure due to the temperature change occurs There has been a problem that the structure is damaged.

In order to solve this problem, Korean Patent Registration No. 10-0879364 has proposed a bridge support system.

Wherein said bearing comprises a bearing device installed between said alternating or piercing bridge and said upper structure to allow relative displacement of the bridge structure or the bridge structure and the bridge structure, A sliding supporting device for allowing sliding is provided at a point where the relative displacement is relatively small and an elastic supporting device for permitting elastic deformation without permitting sliding is provided at a point where the relative displacement is relatively small.

That is, in the case of the above-mentioned elastic support device, since the horizontal displacement can not be accommodated due to the structural characteristics of the support device which does not allow sliding, a sliding support device is installed at both ends of the upper structure slab or between the slab and the slab, And it is possible to absorb the expansion and contraction of the horizontal displacement.

However, in the case of the spherical friction pendulum type seismic isolator, which slides along the spherical surface and absorbs the horizontal displacement force, unlike the above-mentioned elastic support device, the slide along the friction spherical surface of the seismic isolator during different horizontal displacements due to the extension of the upper structure slab As a result, there is a vertical step difference as shown in the following figure.

The vertical steps generated in the expansion joint can be found in "C" in Figure 1 below.

<Figure 1>

The vertical steps generated in the bridge seismic isolation can be found in "C" in Figure 2 below.

<Figure 2>

In other words, as shown in Fig. 1 and Fig. 2, when the expansion and contraction of the superstructure occurs due to the temperature change, the both ends of the slab connected to the ground as the upper structure by the horizontal displacement force and the expansion joint in which the slab and slab are joined A step C that is different from each other is generated and a barrier is formed through such a vertical step, so that there is a risk of a safety accident due to the damage of the bridge support and the expansion joint device due to the wheel load when the vehicle is traveling.

[Patent Document 1] Korean Patent Registration No. 10-1194307 Repairing disc easy to replace easily Notification October 24, 2012. [Patent Literature 2] Korea Patent Registration No. 10-0879364, Bridge Supporting System Notification Jan. 19, 2009.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION

In the bridge structure, even if a displacement force is generated in the slab, which is the upper structure of the bridge, due to a temperature change and an earthquake, the both ends of the slab or the expansion joint joining the slab and the slab can maintain the same smooth surface.

That is, a barrier is not formed at the portion where the slab and the slab are joined at the time of vehicle driving, so that the vehicle can safely run the bridge and prevent damage to the bridge structure.

In order to achieve the above object,

A bridge substructure which is a bridge substructure or bridge and a bridge superstructure, and a frictional punch-type earthquake-isolator supporting the slab on the upper surface of each of the alternation or bridge piers, and a telescopic frame installed on both ends of the slab or between the slab and the slab Claims [1] A friction-pendent earthquake-isolator support structure for a bridge made up of a joint device,

Wherein the frictional pillar-shaped seismic isolator for supporting the slab on the alternating or pierced upper surface is separately installed as a planar movable frictional pillar-type seismic isolator and a curvature-movable spherical frictional pillar-type seismic isolator, A planar friction pendulum type seismic isolation pedestal may be installed at both ends of the slab provided with the expansion joint device or between the slab and the slab, alternatively at a position where the expansion joint device is not installed, And a pendulum-type seismic isolation base is installed to accommodate the vertical movement of the slab along with the vertical movement.

The planar friction pendulum type seismic isolation pedestal includes a lower plate fixed to the upper surface of the pier or an elevation of the pier through an anchor, a pedestal fixed integrally on the upper surface of the lower plate and formed with arcuate grooves upwardly opened on the upper surface, And a top plate coupled to the bottom surface of the slab, which is slidable through the slide member and the smooth surface of the disk, and which is joined to the bottom surface of the slab, which is an upper structure of the bridge Can be applied.

The spherical friction pendulum type quasi-isolator base includes a lower plate fixed alternately or on an upper surface of a pier through an anchor, a base integrally fixed to an upper surface of the lower plate and formed with arc-shaped grooves upwardly opened on an upper surface thereof, A disk having a semi-spherical shape formed to be inserted into an arc-shaped groove of a base and having a semi-spherical surface formed by a protrusion formed on the upper surface thereof, and a curved surface groove formed on the bottom surface so that the curved surface of the disk can slide through the slide member, And an upper plate coupled to a bottom surface of the upper plate.

The present invention has the effect of maintaining the same smooth surface at both ends of the slab or between the slab and the slab, even if a displacement force is generated in the slab, which is the upper structure of the bridge, due to an earthquake or the like.

That is, in the slab provided along the throttle direction with respect to the bridge, a plane friction slant type seismic isolation pedestal having a flat slide structure is provided at the both ends of the slab or alternately between the slab and the slab or on the upper surface of the pier, A spherical friction pendulum type seismic isolation pedestal of the spherical slide structure is installed on the upper surface of the alternation or pier located on the part of the bridge so that a barrier is not formed in the portion where the slab and the slab are connected at the time of driving the vehicle, It is effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure of a frictional-pendulum-type seismic isolation pedestal arrangement in a bridge according to the present invention;
Fig. 2 is an enlarged view of the installation state of a plane frictional pendulum type quasi-isolator rest, which is a portion of the recessed road "A " in Fig.
Fig. 3 is an enlarged view showing an installation state of a plane frictional pendulum type quasi-isolator, which is a portion of the main road "A1 " in Fig.
Fig. 4 is an enlarged view showing an installation state of a spherical friction pendulum type quasi-isolator provided on the lug road "B " in Fig.
5 is a cross-sectional view of a planar friction pendulum type seismic isolator according to the present invention,
6 is a sectional view of a spherical friction pendulum type seismic isolator according to the present invention.
Fig. 7 is an enlarged configuration diagram of a state in which the diaphragm plane frictional punch type seismic isolation pedestal is installed as another example of the "A"
8 is an exploded perspective view of the main portion of the frictional punch-type seismic isolation plate of the diagonal plane of Fig. 7, Fig.
9 is a sectional view of the coupling state of Fig. 8,
10 is a side sectional view of Fig. 9; Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention. do.

1 to 6, the bridge substructure 100 is a bridge substructure, the slab 200 is a bridge superstructure, and the slab 200 is formed on the upper surface of the bridge 100 or the bridge 100, A frictional punch-type earthquake-isolating support 300 that supports the slab 200 and a telescopic joint 400 installed at both ends of the slab 200 or between the slab 200 and another slab, Shaped seismic isolation pedestal arrangement.

The frictional punch-type seismic isolation pedestal 300 is installed along the direction of the throttling axis and the weaving direction at the upper surface of the alternating pier or bridge 100 so as to support the slab 300 and to control the vertical movement of the bridge slab 200 and the horizontal displacement .

In the present invention, when a friction pendulum type quake isolator 300 is installed on the upper surface of the alternating or pier 100, a horizontal frictional punch type earthquake isolator 320 of a horizontal slide structure and a spherical friction punch type earthquake isolator (See Figs. 5 and 6)

The planar friction pendulum type quake isolator pedestal 320 is disposed at an alternating or piercing 100 located at either end of the slab 300 or at the bottom of the seam between the slab 200 and the slab 200, And a spherical friction pendulum type quasi isolation vessel 340 is installed on the upper surface of the bridge 100 or the bridge 100 located on the bottom surface of the slab 200, Thereby supporting the slab 200 (refer to FIG. 5).

The rail-type or finger-type joint may be a joint between the slab 200 and the slab 200, or a joint between the slab 200 and the slab 200, So that the upper and lower gaps between the slab 200 and the slab can be expanded and contracted in a minimum gap corresponding to the expansion and contraction action of the bridge slab 200. [

The gap formed in the expansion joint device 400 allows the slabs 200 to be expanded and contracted, and the height difference is made parallel to minimize the barrier caused by the running of the vehicle.

The planar friction pendulum type quasi isolation base 320 includes a lower plate 322 which is alternately fixed to the upper surface of the pier 100 through an anchor and a lower plate 322 integrally fixed on the upper surface of the lower plate 322, A disk 324 having a flat surface 326 on which a hemisphere 325 is formed so that the lower surface of the disk 324 is inserted into the arc groove 323 of the bearing 324, And an upper plate 329 slidable through the slide member 328 and the smooth surface 326 of the disk 327 and coupled to the bottom surface of the slab 200 as an upper structure of the bridge. (See Fig. 5)

When the horizontal displacement force is generated in the slab 200, the upper surface of the disk 327 is formed as a horizontal smooth surface 326 and the bottom surface of the upper plate 329 Is slid in the horizontal direction through the slide member 328, so that the slab 200 of the bridge induces the expansion and contraction in the horizontal direction by the planar friction pendulous seismic isolation pedestal 320, 400 are vertically shifted from each other to prevent lifting.

The spherical friction pendulum type quasi isolation vessel 340 includes a lower plate 342 which is alternately fixed to the upper surface of the bridge 100 through an anchor and a lower plate 342 integrally fixed on the upper surface of the lower plate 342, A curved surface portion 346 having an hemispherical top surface on which a hemisphere 345 is formed so that the lower surface of the curved surface portion 344 is inserted into the arc groove 343 of the support 344, A curved surface groove 341 is formed on the bottom surface of the disk 347 so that the curved surface portion 346 of the disk 347 can slide through the slide member 348 and the slab 200, And an upper plate 349 coupled to the bottom surface of the upper plate 349. (See Fig. 6)

The curved surface portion 346 of the disk 347 is brought into close contact with the curved surface groove 341 of the bottom surface of the upper plate 349 when the bridge slab 200 generates the offset load on one side, So that the slab 200 can be horizontally supported while the upper plate 349 is lifted.

The planar friction pendulum type seismic isolator and the spherical friction pendulum type seismic isolation pedestal according to the present invention as described above are installed on a bridge as follows.

In the installation, as shown in Fig. 1, alternating positions or piers of both end positions of the slab 200 and a stretching joint between the slab and the slab are provided with flat frusto-conical shape as shown in Figs. 1 to 3 and 5, An earthquake-isolating bearing 320 may be installed, and a spherical friction pendulum-type earthquake-isolating bearing 340 may be installed at an alternation or pier located at the bottom of the slab, as shown in FIGS.

When a displacement occurs in the bridge in the state as described above, the rotation and the vertical motion are controlled by the spherical friction pendulous seismic isolation pedestal 340 of FIG. 6 and the horizontal movement is controlled by the spherical friction pendulous seismic isolation pedestal 340, So that only the displacement in the horizontal direction is generated in the expansion joint device 400 installed at both ends of the slab 200, so that the upper and lower ends of the finger plate constituting the expansion joint device 400 The lift caused by the difference will not occur.

8 to 10 illustrate another example of the planar friction pendulum type seismic isolation pedestal according to the present invention, in which the horizontal displacement along the throttling direction and the curved movement along the perpendicular direction of the throttling axis, (360).

The diaphragm plane frictional punch-type seismic isolation pedestal 360 includes a lower plate 362 fixed to the upper surface of the pier 100 through an anchor, an upper plate 362 integrally fixed to the upper surface of the lower plate 362, And a hemisphere 365 is formed so that the lower surface of the hemisphere 365 is inserted into the arcuate groove 363 of the base 364. The upper surface of the hemisphere 367a and the upper surface of the hemisphere 367a A disk 367 in which both curved portions 367b and 367c around the intermediate rectilinear section 367a are formed to protrude along the perpendicular direction of the sagittal axis and an intermediate straight section 367a and both curved surfaces 367a and 367b of the disk 367, And a top plate 369 having a curved surface groove portion 368d formed in sliding contact with the slabs 367c and 367c and connected to the bottom surface of the slab 200 as an upper structure of the bridge.

Accordingly, when the horizontal displacement force of the bridge superstructure is generated, it is flatly slid along the direction of the throttle to prevent the vertical step of the expansion joint device 400 from being generated, and the displacement force is absorbed through the curved surface movement in the direction perpendicular to the throttle shaft.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It is obvious to those who have knowledge of. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100: Piers (alternating)
200: Slab
300: Friction pendulum type earthquake isolation base
320: Planar Friction Pendulum Earthquake Isolation Base
340: Spherical friction pendulum type earthquake isolator
360: Axis Planar Friction Pendulum Earthquake Isolation Base
400: expansion joint

Claims (4)

A bridge substructure 100 that is a bridge substructure and a slab 200 that is a bridge superstructure and a frictional punch-type seismic isolation pedestal 300 that supports the slabs on the upper surface of the alternate or pier 100, And an expansion joint device (400) installed at a joint section between the slab and the slab to form a bridge, characterized in that:
A frictional punch-type seismic isolation pedestal 300 that supports the slab 200 on the alternating or pierced angle 100 is comprised of a planar friction pendulous seismic isolation pedestal 320 and a spherically frictional Shaped seismic isolation bases (340);
A planar friction pendulum type vibration isolator 320 is installed at both ends of the slab provided with the expansion joint device 400 or between the slab and the slab and the expansion joint device 400 is not installed A spherical friction pendulous seismic isolation pedestal 340 is installed on the upper surface of the pier 100 so that the slab 200 receives the vertical movement with the horizontal displacement when the slab 200 generates a displacement force;
The planar friction pendulum type quasi isolation base 320 includes a lower plate 322 which is alternately fixed to the upper surface of the pier 100 through an anchor and a lower plate 322 integrally fixed on the upper surface of the lower plate 322, A disk 324 having a flat surface 326 on which a hemisphere 325 is formed so that the lower surface of the disk 324 is inserted into the arc groove 323 of the bearing 324, And an upper plate 329 slidable through the slide member 328 and coupled to the bottom surface of the slab 200 as an upper structure of the bridge, and;
The spherical friction pendulum type quasi isolation vessel 340 includes a lower plate 342 fixed to the upper surface of the pier 100 through an anchor and a lower plate 342 integrally fixed on the upper surface of the lower plate 342, A hemispherical groove 343 is formed and a hemisphere 345 is formed so that the lower surface of the hemisphere 345 is inserted into the arched groove 343 of the bearing 344. A hemispherical curved surface portion 346 having an upper surface is protruded A curved surface groove 341 is formed on the bottom surface of the disk 347 so that the curved surface portion 346 of the disk 347 can slide through the slide member 348 and the bottom surface of the slab 200, And an upper plate (349) coupled to the bridge plate (342).
delete delete A bridge substructure 100 that is a bridge substructure and a slab 200 that is a bridge superstructure and a frictional punch-type seismic isolation pedestal 300 that supports the slabs on the upper surface of the alternate or pier 100, And an expansion joint device (400) installed at a joint section between the slab and the slab to form a bridge, characterized in that:
A frictional punch-type seismic isolation pedestal 300 that supports the slab 200 on the alternating or pierced bridge 100 is constructed of an angular-plane frictional punch-type seismic isolation pedestal 360 capable of plane movement and a spherical friction- And a pendulous quasi-quake isolator base (340). In the joint between the slab and both ends of the slab provided with the expansion joint device (400) or between the slab and the slab, And a spherical friction pendulum type earthquake isolator 340 is installed on the upper surface of the pier 100 where the expansion joint device 400 is not installed so that the slab 200 is horizontally displaced To accommodate vertical movements;
The spherical friction pendulum type quasi isolation vessel 340 includes a lower plate 342 fixed to the upper surface of the pier 100 through an anchor and a lower plate 342 integrally fixed on the upper surface of the lower plate 342, A hemispherical groove 343 is formed and a hemisphere 345 is formed so that the lower surface of the hemisphere 345 is inserted into the arched groove 343 of the bearing 344. A hemispherical curved surface portion 346 having an upper surface is protruded A curved surface groove 341 is formed on the bottom surface of the disk 347 so that the curved surface portion 346 of the disk 347 can slide through the slide member 348 and the bottom surface of the slab 200, A top plate 349 coupled to the top plate 349;
The diaphragm plane friction pendulum type seismic isolation pedestal (360)
A lower plate 362 fixed to an upper surface of the pier 100 through an anchor and a support 364 integrally fixed on the upper surface of the lower plate 362 and formed with arcuate grooves 363 opened upward on the upper surface, A hemisphere 365 is formed so that a lower surface thereof is inserted into an arcuate groove 363 of the bearing 364 and an upper surface thereof is formed into an intermediate rectilinear section 367a and both curved sections 367a 367c and 367c of the disk 367 and the intermediate member 367a and both the curved portions 367b and 367c of the disk 367 and the slide member 368 And a top plate (369) formed on the bottom surface of the slab (200), which is an upper structure of the bridge, is formed to have a curved surface trench (368d) for sliding contact. Isolation pedestal placement structure.

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