JPH086288B2 - Upper structure buffer stop device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to the case where an earthquake occurs.
The present invention relates to an apparatus for stopping an upper structure that is a bridge or an upper structure in a structure by buffering it.

[0002]

2. Description of the Related Art Conventionally, as a buffer stopping device for an upper structure, one disclosed in Japanese Patent Publication No. 4-13489 is known.

[0003]

In the case of the above-mentioned conventional superstructure buffer stop device, the upper structure is suspended until the vertical hole of the upper metal plate of the sliding rubber bearing with the locking member abuts on the locking member. The vibration may not stop and a resonance phenomenon may occur.

[0004]

In order to advantageously solve the aforementioned problems, in the upper structure buffer stop device of the present invention, the upper structure 2 is extended above the lower structure 1 in the width direction of the upper structure 2. A lower support base 4 having an upper protrusion 3 is fixed, and a downward opening box-shaped upper support member 5 located above the lower support base 4 is fixed to the lower part of the upper structure 2, and the upper support member 5 A rubber-like elastic body 7 is interposed between both side plates 6 in the longitudinal direction of the upper structure and the upper protrusion 3, and the rubber-like elastic body 7 is used as a member of the upper protrusion 3 and the side plates 6. Fix on at least one. In addition, a casing 8 is fixed to the upper part of the lower structure 1, and a support member 9 extending in the longitudinal direction of the upper structure at the lower part of the upper structure 2.
Is inserted into the casing 8 and the pressing member 10 is fixed to the support member 9 at the central portion in the casing 8, and between the pressing member 10 and both ends of the casing 8 in the longitudinal direction of the upper structure. The above problem can be advantageously solved by interposing the rubber elastic body 7 and connecting the end portion of the support member 9 to the upper structure 2.

[0005]

1 to 4 show an embodiment of the invention of claim 1, in which the width of the upper structure 2 is provided at the center upper part of a lower support stand 4 having a plurality of anchor members 11 fixed to the lower part. An upper protrusion 3 extending in the direction is provided, each anchor member 11 is embedded in an upper part of a concrete lower structure 1, and a lower surface of a lower support 4 is placed on an upper surface of the lower structure 1. A plurality of anchor members 12 are fixed to the upper portion of the box-shaped upper support member 5 that opens downward, and the anchor members 12 are embedded in the lower portion of the concrete upper structure 2 and the upper surface of the upper support member 5 is formed. Are abutted on the lower surface of the upper structure 2, and the upper support members 5 are provided on the side plates 6 provided on both sides of the upper structure 2 in the longitudinal direction and on the both sides of the upper structure 2 in the width direction. And a side plate 13.

Metal plates 14 and 15 are fixed to the metal plate 14 on the side of the upper protrusion 3 with an adhesive agent at both ends of the rubber elastic body 7 in the longitudinal direction of the upper structure 2. The protrusion 16 is fitted into a locking recess 17 provided in the upper protrusion 3, and further, a plurality of female screw holes are provided in the metal plate 15 on the side plate 6 side, and the fixing plate is inserted into the through hole of the side plate 6. The screw 18 is screwed into the female screw hole of the metal plate 15.

In the embodiment of the invention of claim 1, when the seismic force acts on the upper structure 2 and the upper structure 2 moves to the right side of FIG. 1, as shown in FIG. The elastic body 7 is compressed in the longitudinal direction of the upper structure 2, and the frictional resistance between the lower support 4 and the left rubber elastic body 7 increases in proportion to the compressive force. When seismic force acts on the upper structure 2 and the upper structure 2 moves to the left side in FIG. 1, the rubber elastic body 7 on the right side is compressed in the longitudinal direction of the upper structure 2 and In proportion to the compressive force, the frictional resistance between the lower support 4 and the rubber elastic body 7 on the right side becomes large, so that the amplitude of the movement of the upper structure 2 due to the seismic force is effectively damped, The vibration of the upper structure 2 stops in a short time.

5 to 14 show an embodiment of the invention of claim 2, wherein the lid 8 is fixed to the opening of the casing body 19 with screws to form the casing 8, and the upper portion of the lid 20. Is provided with a locking projection 21 at the center thereof, and the upper portions of the plurality of anchor members 11 are fitted into and fixed to the bottom plate of the casing body 19 by welding, and each anchor member 11 is made of the concrete lower structure 1. The bottom surface of the bottom plate of the casing body 19 is placed on the upper surface of the lower structure 1 while being embedded in the upper portion.

The through hole 23 at the center of the lower slide bearing plate 22 placed on the upper surface of the lid 20 is fitted into the locking projection 21 of the lid 20 and is made of the concrete upper structure 2. The upper slide bearing plate 24 fixed to the lower portion is slidably mounted on the upper surface of the lower slide bearing plate 22.

Support member 9 extending in the longitudinal direction of the upper structure
Is inserted into the casing 8, and the support member 9 is provided at a central portion of the casing 8 in the longitudinal direction of the upper structure.
A pressing member 10 protruding in the vertical direction is fixed to the support member 9, and connecting members 25 protruding in the upward direction are integrally provided at both ends of the supporting member 9 in the longitudinal direction of the upper structure, and the connecting member 25 extends in the vertical direction. A long hole 26 is formed, and a connecting fitting 29 including a seat plate 27 and a mounting plate 28 fixed at an interval in the width direction of the upper structure is fixed to the lower surface of the upper slide support plate 24 by welding. Each connecting member 2
5 is arranged between the pair of mounting plates 28 in the connecting fitting 29, and the through hole 30 of each mounting plate 28 and the connecting member 2 are provided.
A connecting shaft 31 made of a bolt extending over the elongated hole 26 of
Is inserted.

A rubber elastic body 7 having a slit 33 extending in the front-rear direction is interposed between an end plate 32 in the longitudinal direction of the upper structure of the casing 8 and the pressing member 10, and each rubber elastic body is provided. 7, metal plates 14 and 15 are fixed to both ends of the upper structure in the longitudinal direction,
The fixing bolt 34 inserted into the metal plate 15 is screwed into the screw hole of the metal plate 15, and is fixed by the fixing bolt 34.
Are fixed to the end plate 32.

In the embodiment of the invention of claim 2, when seismic force acts on the upper structure 2 and the upper structure 2 moves to the right side of FIG. 5, as shown in FIGS. 13 and 14,
The rubber elastic body 7 on the right side is compressed in the longitudinal direction of the upper structure 2, and the frictional resistance between the rubber elastic body 7 on the right side and the casing 8 increases in proportion to the compression force.
When the seismic force acts on the upper structure 2 and the upper structure 2 moves to the left side in FIG. 5, the rubber-like elastic body 7 on the left side is moved.
Is compressed in the longitudinal direction of the upper structure 2, and the frictional resistance between the casing 8 and the rubber-like elastic body 7 on the left side is increased in proportion to the compressive force thereof. The amplitude of the movement of 2 is effectively damped, and the vibration of the upper structure 2 stops in a short time.

The present invention can also be used as a seismic isolation device for superstructures or bridge girders.

[0014]

According to the present invention, the lower support 4 having the upper protrusion 3 extending in the width direction of the upper structure 2 is fixed to the upper portion of the lower structure 1, and the lower support 4 is fixed to the lower portion of the upper structure 2. A downward-opening box-shaped upper support member 5 located above the lower support base 4 is fixed, and a rubber material is provided between the upper support member 5 between both side plates 6 in the longitudinal direction of the upper structure and the upper protrusion 3. The elastic body 7 of
Since it is fixed to at least one of the upper projection 3 and each of the side plates 6, when the vibration force due to an earthquake acts on the upper structure 2, the rubber elastic body 7 to be compressed is moved to the upper structure 2. The rubber elastic body 7 can be strongly pressed against the lower support 4 by expanding in a direction perpendicular to the longitudinal direction, and when the swing of the upper structure 2 increases due to an earthquake, the rubber elastic body Since the pressure contact force between the lower support base 7 and the lower support base 4 is also increased and the frictional resistance therebetween is increased, the vibration of the upper structure 2 due to the earthquake can be effectively damped. In addition, the casing 8 is fixed to the upper part of the lower structure 1,
A supporting member 9 extending in the longitudinal direction of the upper structure at a lower portion of the upper structure 2 is inserted into the casing 8, and a pressing member 10 is fixed to the supporting member 9 at a central portion of the casing 8, and the pressing member is provided. 10 and the casing 8
The elastic member 7 made of rubber is interposed between both ends of the upper structure 2 in the longitudinal direction, and the end of the support member 9 is connected to the upper structure 2, thereby causing the upper structure 2 to vibrate due to an earthquake. When a force is applied, the rubber elastic body 7 to be compressed is expanded in a direction perpendicular to the longitudinal direction of the upper structure 2 to strongly press the rubber elastic body 7 against the casing 8. When the swing of the upper structure 2 due to the earthquake increases, the pressure contact force between the rubber elastic body 7 and the casing 8 also increases, and the frictional resistance between them increases, so that the vibration of the upper structure 2 due to the earthquake occurs. Can be effectively damped.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an upper structure buffer stop device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a cross-sectional plan view showing a part of FIG. 2 in an enlarged manner.

FIG. 4 is a vertical cross-sectional side view showing a state in which a left rubber elastic body is compressed.

FIG. 5 is a vertical sectional side view showing an upper structure buffer stop device according to an embodiment of the invention of claim 2;

FIG. 6 is a vertical sectional side view showing a part of FIG. 5 in an enlarged manner.

FIG. 7 is a side view showing a support member having a pressing member.

FIG. 8 is a sectional view taken along line BB in FIG.

FIG. 9 is a plan view showing a rubber-like elastic body to which a metal plate is fixed.

10 is a cross-sectional view taken along the line CC of FIG.

FIG. 11 is a side view showing a connecting portion between the connecting fitting and the supporting member.

12 is a cross-sectional view taken along line DD of FIG.

FIG. 13 is a vertical cross-sectional side view showing a state in which the right rubber elastic body is compressed.

FIG. 14 is a vertical sectional side view showing a part of FIG. 13 in an enlarged manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower structure 2 Upper structure 3 Upper protrusion 4 Lower support 5 Upper support member 6 Side plate 7 Rubber elastic body 8 Casing 9 Support member 10 Pressing member 11 Anchor member 12 Anchor member 13 Side plate 14 Metal plate 15 Metal plate 16 Locking protrusion 17 Locking recess 18 Fixing screw 19 Casing body 20 Lid 21 Locking protrusion 22 Lower sliding support plate 23 Through hole 24 Upper sliding support plate 25 Connecting member 26 Long hole 27 Seat plate 28 Mounting plate 29 Connecting metal fitting 30 Through Hole 31 Connection Shaft 32 End Plate 33 Slit 34 Fixing Bolt

Claims (2)

[Claims] 1. A lower support 4 having an upper protrusion 3 extending in the width direction of the upper structure 2 is fixed to an upper portion of the lower structure 1, and the lower support 4 of the lower support 4 is attached to a lower portion of the upper structure 2. Fix the downward opening box-shaped upper support member 5 located at the top,
A rubber elastic body 7 is interposed between both side plates 6 of the upper support member 5 in the longitudinal direction of the upper structure and the upper projection 3, and the rubber elastic body 7 is connected to the upper projection 3 and the upper projection 3. An upper structure buffer stop device fixed to at least one of the side plates 6. 2. A casing 8 is fixed to an upper part of the lower structure 1, and a support member 9 extending in the longitudinal direction of the upper structure at a lower part of the upper structure 2 is inserted into the casing 8.
A pressing member 10 is fixed to the support member 9 in the central portion of the casing 8, and between the pressing member 10 and both ends of the casing 8 in the longitudinal direction of the upper structure,
An upper structure buffer stop device in which an end portion of the support member 9 is connected to the upper structure 2 with a rubber elastic body 7 interposed.