JP2017043912A - Expansion joint device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expansion joint device capable of covering a clearance for certain, even when both side portions have been displaced in lateral and longitudinal directions.SOLUTION: A floor portion of a clearance 3 is covered by a floor cover 4. A longitudinal motion support part 5 and a lateral motion support part 6 are provided on both sides of the clearance 3. The longitudinal motion support part 5 slidably supports the floor cover 4 in a longitudinal direction. The lateral motion support part 6 slidably supports the floor cover 4 in a lateral direction. An auxiliary cover 7 is provided, to be overlapped with an edge part of the floor cover 4 in the lateral direction. The auxiliary cover 7 is made slidable in the lateral direction, relative to the longitudinal motion support part 5. The auxiliary cover 7 is disabled from sliding in the lateral direction, relative to the lateral motion support part 6. The auxiliary cover 7 is expandable/contractible. When both sides of the clearance 3 are relatively displaced in the longitudinal and lateral directions, the auxiliary cover 7 covers a defective part 24 formed beside the floor cover 4.SELECTED DRAWING: Figure 10

Description

  The present invention relates to an expansion joint device used for an expansion joint of a building having a seismic isolation structure, for example.

  Generally, in a building with a base-isolated structure or a complex structure, an outer groove is formed around it to separate it from the ground, or the building itself is divided into multiple blocks and these are connected by an expansion joint. However, expansion joints often absorb the effects of earthquakes, changes in temperature, and subsidence. In particular, in a building having a base-isolated structure, a large relative displacement is likely to occur between the building and the ground or between blocks during an earthquake, and this large relative displacement is absorbed by the expansion joint portion.

  An expansion joint is a connection method that connects a building and the ground, or blocks so that they can follow the relative displacement, and has a size that can absorb the relative displacement between the building and the ground or between blocks. In addition to forming a clearance, the clearance exposed on the floor or the like is covered with an expansion joint device that can follow the relative displacement of both side portions.

  As such an expansion joint device, for example, in Patent Document 1, a floor cover plate 103 that closes a gap between the casings 101 and 102 is slidably installed, and a defect cover device (auxiliary cover) is provided below the floor cover plate 103. ) 104 is disclosed (see FIG. 11).

  The defect cover device 104 has a structure in which a fixed frame plate 106 and a sliding frame plate 107 connected by beam members 105 are attached to the casings 101 and 102 on both sides, and a plurality of elastic bodies 108 are attached to both the frame plates 106 and 107. Is done. The defect cover device 104 is formed on the side of the floor cover plate 103 when the floor cover plate 103 slides in the Y direction (lateral direction) while allowing large expansion and contraction in the X direction (vertical direction). The defect 109 that exposes the gap between 101 and 102 is closed by the stretchable body 108.

  In the expansion joint device of Patent Document 1, the gap between the casings 101 and 102 is narrowed, so that the floor cover plate 103 slides in the X direction, and the sliding frame plate 107 slides toward the center in the Y direction. The defect cover device 104 is folded (see FIG. 12A). Further, as the gap between the casings 101 and 102 widens, the floor cover plate 103 slides in the X direction, and the defect cover device 104 expands with the sliding movement of the sliding frame plate 107 outward in the Y direction ( (Refer FIG.12 (b)).

  Further, when the casings 101 and 102 are displaced in the Y direction, the floor cover plate 103 slides in the Y direction, and the defect cover device 104 slides the sliding frame plate 107 in the Y direction so as to have an initial mounting shape. Is maintained, and the defective portion 109 generated on the side as the floor cover plate 103 slides is closed (see FIG. 12C).

JP-A-2004-156305 (paragraph numbers 0007, 0008, 0021 to 0023, FIGS. 1 and 7 to 9)

  By the way, the expansion joint device of Patent Document 1 has a structure in which the sliding frame plate slides in the horizontal direction while changing the shape of the auxiliary cover (defect cover device) when the clearance (gap) expands and contracts in the vertical direction. Therefore, the elastic body which covers the defect | deletion part of the side of a floor part cover may move large to a horizontal direction from a predetermined position.

  Therefore, when both side portions sandwiching the clearance are merely displaced relatively in the lateral direction, the side portion of the floor cover can be covered with the auxiliary cover, but in addition to the lateral displacement, the clearance is When it expands and contracts in the vertical direction, the auxiliary cover cannot cover the missing part, and there is a risk of exposing the clearance.

  An object of the present invention is to provide an expansion joint device that can reliably cover a clearance even when both side portions are displaced vertically and horizontally.

  In order to achieve the above object, an expansion joint device according to the present invention includes a floor cover that covers a floor portion of a clearance of an expansion joint portion of a building, and the floor portion cover is disposed on both sides of the clearance floor portion. Among the vertically movable support part and the horizontally movable support part provided in the It is supported so as to be slidable in the lateral direction. Further, an auxiliary cover is provided at a position overlapping the lateral end of the floor cover, and the auxiliary cover is attached to the side where the vertically movable support portion is provided on both sides sandwiching the floor portion of the clearance so as to be slidable laterally. The side movable support portion is attached to the side where the side movable support portion is provided so as not to be laterally slidable, and is extendable along the vertical direction.

  According to the above configuration, one of the two side portions sandwiching the clearance supports the floor cover in a vertically slidable manner that is not slidable horizontally, and supports the auxiliary cover in a slidable manner. On the other hand, the floor cover is supported so as to be slidable horizontally, and the auxiliary cover is supported so as not to be slidable horizontally.

As a result, when both side portions sandwiching the clearance are relatively displaced in the lateral direction, the floor cover is integrally displaced with one of the both side portions, and the auxiliary cover is displaced integrally with the other of the both side portions.
Along with this lateral displacement, the floor cover is displaced with respect to the other of the two side parts, and a loss of the covering function by the floor cover is generated on the side thereof. The cover can be covered with the auxiliary cover that is overlapped with the end portion in the lateral direction, and the clearance can be prevented from being exposed from the defective portion.

  In addition, since the auxiliary cover can be extended and contracted along the vertical direction, the vertical direction of the clearance can be maintained while maintaining a predetermined position with respect to the other of the both sides sandwiching the clearance without moving the auxiliary cover in the horizontal direction. Can follow expansion and contraction. Thereby, even when both side portions sandwiching the clearance are simultaneously displaced vertically and horizontally, it is possible to reliably cover the defect portion with the auxiliary cover and prevent the clearance from being exposed from the defect portion.

  The auxiliary cover may have a structure in which a plurality of plate members are stacked so as to be slidable in the vertical direction.

  According to this configuration, since the auxiliary cover is configured by a plurality of plate members, the gap portion is completely closed without causing a gap between the members like the auxiliary cover having a conventional structure in which a plurality of rod-shaped members are arranged. Can do. In addition, by appropriately increasing the number of auxiliary covers, the amount of expansion and contraction can be sufficiently increased without being deformed in the lateral direction as in the case of an auxiliary cover having a conventional structure.

  Further, both lateral sides of the plate member may be supported by a pair of support frames, and the support frames of the plate members adjacent in the vertical direction may be connected so as to be slidable in the vertical direction.

  According to this configuration, since both sides of the plate member in the lateral direction are supported by the support frame, the strength of the auxiliary cover can be sufficiently increased, and the support frames are slidably connected to each other, which is a relatively weak point. The easy connection part can be set to a sufficiently strong support frame to increase the safety of the expansion joint device.

  In addition, a slide pin whose center axis is set parallel to the slide direction of the support frame is interposed in the slidable connection portion of the support frame connected to each other, and the support frame and the slide pin are formed of different metals. May be.

  According to this configuration, since the slide pin is interposed in the connection portion between the support frames, the material of the support frame and the slide pin can be appropriately selected according to the function required for each member. In addition, since the support frame and the slide pin are made of different metals having different hardnesses, for example, the friction coefficient between the support frame and the slide pin can be reduced to facilitate slipping. Thereby, the slide performance of the connecting portion of the support frame can be enhanced with a simple configuration in which the slide pin is interposed while setting the member performance while paying attention to the strength and weight of the support frame.

  In addition, the support frames of the plurality of plate members may be sequentially stacked inward or outward in the lateral direction.

  According to this configuration, since the support frames of the auxiliary cover are sequentially stacked in the horizontal direction, the side edges of the auxiliary cover can be inclined as a whole to approach the inclined shape of the defective portion, and the defective portion can be efficiently removed with the auxiliary cover. Can be covered.

  In addition, a wall cover that covers the wall portion that rises from the lateral end of the floor portion of the clearance of the expansion joint portion is provided, and this wall cover is followed by the relative displacement in the lateral direction of both side portions sandwiching the clearance. It may be tiltable.

  According to this configuration, since the wall cover that follows the relative displacement in the lateral direction of both side portions sandwiching the clearance is provided, the missing portion can be set in a range surrounded by the side edge of the floor cover and the wall cover. By covering this range with the auxiliary cover, the safety of the expansion joint device can be more reliably increased.

  As described above, according to the present invention, of the both sides sandwiching the clearance, the auxiliary cover can be slid sideways and the floor cover can be slidable side to the side where the floor cover cannot slide sideways. On the other hand, the auxiliary cover cannot be slid sideways. Thereby, even if the floor cover is displaced in the lateral direction, the defect part generated on the side of the floor cover can be covered with the auxiliary cover, and the clearance can be prevented from being exposed from the defect part.

  In addition, since the auxiliary cover can be extended and contracted along the vertical direction, it is possible to follow the vertical expansion and contraction of the clearance while maintaining the position of the auxiliary cover in the horizontal direction. Even in the case of displacement, the defect portion can be reliably covered with the auxiliary cover.

The principal part top view of the expansion joint apparatus which concerns on this invention Vertical section of expansion joint device Longitudinal section of vertical movable support Expanded cross-sectional view of the laterally movable support part Expanded sectional view of the auxiliary slide Top view of the auxiliary cover Cross section of auxiliary cover Sectional view of the plate member of the auxiliary cover Plan view of the main part of the expansion joint device showing lateral displacement Plan view of the main part of the expansion joint device showing the displacement in the vertical and horizontal directions Plan view of a conventional expansion joint device Plan view showing displacement of a conventional expansion joint device

  Hereinafter, the form for implementing the expansion joint apparatus which concerns on this invention is demonstrated using drawing.

  As shown in FIGS. 1 to 5, the expansion joint device 1 covers, for example, the clearance 3 of the expansion joint portion 2 of a building having a seismic isolation structure, and a floor portion cover 4 that covers the floor portion of the clearance 3. Further, the auxiliary cover 7 is provided at a position that is supported by the vertically movable support portion 5 and the laterally movable support portion 6 provided on both sides of the floor portion of the clearance 3 and overlaps below the lateral end of the floor cover 4. Is.

  The floor cover 4 is, for example, a thin box-shaped rectangular board made of metal, and is supported by the vertically movable support portion 5 so as to be vertically slidable in the longitudinal direction parallel to the joint expansion / contraction direction, and the horizontally movable support portion 6. By this, it is supported so as to be slidable in the lateral direction intersecting the joint expansion / contraction direction. This floor cover 4 is set to have the same lateral length as the floor portion of the clearance 3 so as to cover the entire floor portion of the clearance 3, and also covers the clearance 3 that has spread due to the displacement of the building due to the earthquake. Thus, the length in the vertical direction is set sufficiently longer than the clearance 3.

  The vertically movable support portion 5 is made of, for example, metal, and is disposed in a portion adjacent to the clearance 3, and has a thin box shape whose upper surface is set substantially flush with the surrounding floor surface. An end face that faces is opened. The end of the floor cover 4 on which a plurality of slide devices 8 with spheres are attached enters the opening of the vertically movable support portion 5, and the floor cover 4 is connected to the vertically movable support portion 5. It is designed to slide vertically inside.

  The end surface of the floor cover 4 that has entered the inside of the vertically movable support portion 5 is opposite to the clearance 3 in the vertically movable support portion 5 by a plurality of coil springs 10 connected in series with a slide reinforcement 9 interposed therebetween. It is connected to the end face on the side.

  The slide reinforcing member 9 is made of, for example, metal, is a long member having a substantially rectangular cross section that is oriented in the horizontal direction and is slidable in the vertical direction, and the height thereof is defined as an internal space of the vertical movable support portion 5. It is set to the same degree and the longitudinally movable support part 5 is reinforced from the inside. When the end of the floor cover 4 is slid vertically inside the vertical movable support 5, the slide reinforcing member 9 is formed between the floor cover 4 and the end surface of the vertical movable support 5 by the biasing force of the coil spring 10. The position between is adjusted.

  The laterally movable support part 6 is, for example, a metal-made slide rail having a U-shaped cross section provided on the opposite side of the longitudinally movable support part 5 with the clearance 3 interposed therebetween. It is being fixed to the support metal fitting 11 attached to the site | part to do. A plurality of slide devices 12 with a sphere mounted on the lower surface side of the end portion of the floor cover 4 enter the lateral movable support portion 6, and the floor cover 4 slides laterally along the lateral movable support portion 6. It is supposed to be.

  The auxiliary cover 7 is a trapezoidal plate that can be expanded and contracted along the vertical direction, and has a side edge that is inclined as a whole. It is attached to the side where the movable support portion 6 is provided so that it cannot slide laterally.

  As shown in FIGS. 6 to 8, the auxiliary cover 7 is made of, for example, metal and supports both sides of the inverted U-shaped plate member 13 with support frames 14 and 15 and supports a plurality of plate members 13 in a small size. It is set as the structure laminated | stacked on the outer side in order from the thing, and it expands / contracts to the vertical direction as a whole by sliding the adjacent board member 13 to the vertical direction.

  The support frames 14, 15 are, for example, a metal support having a substantially rectangular cross section and a large support frame 14 or a small support frame 15, and the large and small support frames 14, 15 are arranged at the lower ends of the adjacent plate members 13. They are attached alternately and stacked on the outside in the lateral direction in order from the inside. On the upper and lower surfaces of the support frames 14, 15, flanges 16 protrude from both sides, and the flanges 16 are wrapped with the slide pins 17 interposed therebetween, whereby the support frames 14, 15 of the adjacent plate members 13 are moved in the vertical direction. Connected to allow for slides.

  The slide pin 17 is, for example, a rod having a circular cross section formed of a dissimilar metal having a hardness different from that of the support frames 14 and 15, and is set shorter than the support frames 14 and 15.

  Of the plate members 13 constituting the auxiliary cover 7, the plate member 13 at one end portion is formed with a horizontally projecting fixed piece 18, and this fixed piece 18 is fixed to the support fitting 11 of the laterally movable support portion 6. By doing so, the auxiliary cover 7 is attached so that it cannot slide laterally.

  Of the plate members 13 constituting the auxiliary cover 7, the plate member 13 at the other end has a slide piece 19 that protrudes downward from the outside in the vertical direction and is bent to form a slide surface at the lower end. Is formed. The slide piece 19 is engaged with an auxiliary slide rail 20 having a substantially C-shaped cross section attached to a portion facing the clearance 3 on the side where the longitudinal movable support portion 5 is provided, and the slide piece 19 and the auxiliary slide rail 20 support the slide piece 19. An auxiliary slide portion 21 that supports the cover 7 so as to be slidable laterally is configured.

  Of the clearance 3 of the expansion joint portion 1, the wall portion that rises from the lateral end of the floor portion is covered by the wall portion cover 22, and the wall portion cover 22 is laterally displaced at both sides sandwiching the clearance 3. It is possible to tilt following. The wall cover 22 has, for example, a structure divided in the vertical direction, and can follow a relative displacement in the vertical direction.

  Next, the operation of the expansion joint device 1 when the both side portions of the clearance 3 are relatively displaced will be described.

  As shown in FIG. 9, when both side portions are relatively displaced laterally across the clearance 3, the floor cover 4 is displaced laterally integrally with the vertically movable support portion 5, and the horizontally movable support portion 6. The horizontal displacement follows the lateral displacement by sliding horizontally along the wall, and the wall cover 22 follows the lateral displacement by tilting.

  The auxiliary cover 7 slides laterally with respect to the side on which the vertical movable support portion 5 is provided by the auxiliary slide portion 21 to follow the lateral displacement, and is displaced integrally with the side on which the horizontal movable support portion 6 is provided. By doing so, it moves to the side of the floor cover 4.

  In this state, the substantially triangular defect 23 in which the covering function of the floor cover 4 is lost without being covered with the floor cover 4 in the range surrounded by the side edge of the floor cover 4 and the wall cover 22. However, the deficient portion 23 is covered with the auxiliary cover 7 without a gap to prevent the clearance 3 from being exposed. In addition, the defect portion 23 has a substantially triangular shape with the side edges inclined, and is efficiently covered with the trapezoidal auxiliary cover 7 with the side edges inclined.

  As shown in FIG. 10, when both side portions are relatively displaced in the vertical direction and the horizontal direction across the clearance 3, the floor cover 4 vertically slides the vertical movable support portion 5 to follow the vertical shift, While being displaced in the lateral direction integrally with the longitudinally movable support portion 5, the lateral displacement is followed by sliding laterally along the laterally movable support portion 6. The wall cover 22 follows the vertical shift by sliding the divided portion, and follows the horizontal shift by tilting.

  The auxiliary cover 7 follows the vertical displacement only by its own telescopic function, and the auxiliary slide portion 21 slides laterally with respect to the side on which the vertical movable support portion 5 is provided to follow the horizontal displacement. By moving integrally with the side on which the laterally movable support portion 6 is provided, it moves to the side of the floor cover 4.

  Even in this state, the substantially triangular defect portion in which the covering function by the floor cover 4 is lost without being covered by the floor cover 4 in the range surrounded by the side edge of the floor cover 4 and the wall cover 22. 24 occurs, but the auxiliary cover 7 covers the missing portion 24 with no gap, thereby preventing the clearance 3 from being exposed. In addition, the auxiliary cover 7 follows the vertical displacement only by its own expansion / contraction function, and there is no lateral movement due to the vertical displacement. It moves in the direction and reliably covers the defect 24.

DESCRIPTION OF SYMBOLS 1 Expansion joint apparatus 2 Expansion joint part 3 Clearance 4 Floor part cover 5 Vertical movable support part 6 Horizontal movable support part 7 Auxiliary cover 8 Slide apparatus 9 Slide reinforcement material 10 Coil spring 11 Support metal fitting 12 Slide apparatus 13 Plate member 14 Support frame ( Big)
15 Support frame (small)
16 Flange 17 Slide pin 18 Fixed piece 19 Slide piece 20 Auxiliary slide rail 21 Auxiliary slide part 22 Wall part cover 23 Defect part (at the time of lateral displacement)
24 Defects (during vertical / horizontal displacement)

Claims (6)

An expansion joint device comprising a floor cover covering a floor portion of a clearance of a building expansion joint,
The floor cover is vertically slidable in the vertical direction parallel to the joint expansion / contraction direction by the vertical movable support part among the vertically movable support part and the laterally movable support part provided on both sides sandwiching the floor part of the clearance. Is supported by the laterally movable support part so as to be slidable in the lateral direction intersecting the joint expansion and contraction direction,
An auxiliary cover is provided at a position overlapping the lateral end of the floor cover, and the auxiliary cover is slidably mounted on the side where the vertically movable support portion is provided on both sides sandwiching the floor portion of the clearance. In addition, the expansion joint device is attached to the side provided with the laterally movable support portion so as not to be laterally slidable and is extendable along the longitudinal direction.   The expansion joint device according to claim 1, wherein the auxiliary cover has a structure in which a plurality of plate members are stacked so as to be slidable in a vertical direction.   3. The plate member according to claim 2, wherein the plate member is supported by a pair of support frames on both sides in the lateral direction, and the support frames of the plate members adjacent in the vertical direction are connected to be slidable in the vertical direction. Expansion joint device.   A slide pin having a central axis set parallel to the slide direction of the support frame is interposed in a slidable connection portion of the support frame connected to each other, and the support frame and the slide pin are made of different metals. The expansion joint device according to claim 3.   The expansion joint device according to claim 3 or 4, wherein the support frames of the plurality of plate members are sequentially stacked inward or outward in the lateral direction.   Of the clearance of the expansion joint portion, a wall portion cover is provided to cover a wall portion rising from the lateral end of the floor portion, and the wall portion cover follows the lateral relative displacement of both side portions sandwiching the clearance. The expansion joint device according to claim 1, wherein the expansion joint device is tiltable.

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