JP6946018B2 - Seismic isolation expansion joint device - Google Patents

Description

The present invention relates to a seismic isolation expansion joint device that connects a seismic isolation structure to another structure by an expansion joint cover spanning a seismic isolation clearance of the seismic isolation structure.

The expansion joint cover that spans the seismic isolation clearance of the seismic isolation structure connects the seismic isolation structure to another structure separated by the seismic isolation clearance, and between the two structures, such as a roadway or a pedestrian path. To form. The expansion joint cover has a connecting end that is connected to one structure and a free end that is supported by the other structure.

Patent Document 1 discloses a floor expansion joint 1 in which a rectangular floor plate 2 is bridged in a gap 8 between a first building 3 and a second building 4. The front end portion of the floor plate 2 is placed on the second building 4, and the rear end portion of the floor plate 2 is a slide mechanism that allows the floor plate 2 to move in the horizontal direction and the front end portion of the floor plate 2 is rotated in the vertical direction. It is connected to the first building 3 by a connecting means having a hinge mechanism that enables it. In this connecting means, a shaft member 5 having a circular cross section is attached to four fixtures 32 provided on the side surface 31 of the first building 3 by welding or the like, and all of the three support members 24 provided on the floor plate 2 are attached. The shaft member 5 is passed through the circular hole 25 so that the support member 24 can slide in the axial direction of the shaft member 5 and the peripheral surface of the shaft member 5 can be rotated. As a result, in the floor expansion joint 1, the buildings 3 and 4 are displaced in the axial direction of the shaft member 5 and in the width direction of the gap 8 when the buildings 3 and 4 are displaced in the axial direction. It is also possible to cope with the case where the floor plate 2 is displaced in the thickness direction.

Patent Document 2 discloses a seismic isolation expansion joint floor having an expansion joint floor member 9 with reference to FIGS. 13 to 16. The expansion joint floor member 9 includes an expansion joint support portion 7 recessed on the upper surface of the skeleton 5 of the seismic isolation structure 1 and an expansion joint support portion 8 recessed on the upper surface of the skeleton 6 of the non-seismic isolation structure 2. It is erected across the clearance C between and. A slide rail 42 is provided on the expansion joint support portion 7, and a guide plate 43 is attached to the slide rail 42. The expansion floor member 9 is connected to the guide plate 43 via a spring-loaded bolt 41, and is urged toward the seismic isolation structure 1 by the spring of the bolt 41. As shown in FIG. 16, the expansion floor member 9 is rotatable, and the expansion joint support portion 7 is provided with a sliding member 47 so that the expansion floor member 9 can rotate smoothly. The expansion floor member 9 can also slide laterally along the slide rail 42 together with the guide plate 43.

Japanese Patent No. 5418940 Japanese Patent No. 5427941

The seismic isolation structure moves not only when it moves relatively in the width direction of the seismic isolation clearance (hereinafter, this movement direction is referred to as the X direction) but also in the longitudinal direction of the seismic isolation clearance due to the seismic wave. In some cases (hereinafter, this moving direction is referred to as the Y direction). When the seismic isolation structure moves relatively in the Y direction, the walls and pillars of another structure structurally separated from the seismic isolation structure within the seismic isolation stroke range of the seismic isolation structure in the Y direction. If so, the expansion joint cover connected to the seismic isolation structure may collide with these obstacles, and the seismic isolation function may be lost or the expansion joint cover may be damaged.

Also, when the seismic isolation structure moves relatively in the width direction (X direction) of the seismic isolation clearance due to the seismic wave, the free end of the expansion joint cover is another structure separated by the seismic isolation clearance. It may rise along the slope. At this time, the expansion joint cover rotates in the vertical direction around the vicinity of the connecting end with the seismic isolation structure (hereinafter, this rotation direction is referred to as the Z direction). If the rotation of the expansion joint cover in the Z direction is hindered, the seismic isolation function of the seismic isolation structure may be impaired.

Further, if the joint width between the connecting end of the expansion joint cover and the structure is large, pebbles, leaves, etc. may be caught in the joint, and the movement of the expansion joint cover may be hindered in the event of an earthquake.

Further, if the connection strength between the structure and the expansion joint cover is insufficient, the expansion joint cover may come off due to the seismic wave.

Further, the expansion joint cover has various thicknesses depending on its load-bearing strength. Therefore, there is a demand for a seismic isolation expansion joint device that can be used with expansion joint covers of various thicknesses and is easy to construct.

An object of the present invention is that the expansion joint cover can be relatively moved not only in the width direction (X direction) of the seismic isolation clearance but also in the longitudinal direction (Y direction) of the seismic isolation clearance, and the expansion joint cover can be moved. It is an object of the present invention to provide a seismic isolation expansion joint device capable of smoothly tilting an expansion joint cover when the free end moves in the vertical direction (Z direction).
Another object of the present invention is to provide a seismic isolation expansion joint device capable of easily adjusting the joint width between the connecting end portion of the expansion joint cover and the structure.
Yet another object of the present invention is to provide a seismic isolation expansion joint device capable of imparting sufficient connection strength between the expansion joint cover and the structure.
Yet another object of the present invention is to provide a seismic isolation expansion joint device capable of using expansion joint covers having different thicknesses.
Still another object of the present invention is to provide a seismic isolation expansion joint device that is easy to construct.

The seismic isolation expansion joint device of the present invention is a seismic isolation expansion joint in which a seismic isolation structure 1 is connected to another structure 2 by an expansion joint cover 6 spanning a seismic isolation clearance 3 of the seismic isolation structure 1. In the device 5, the expansion joint cover 6 is supported by the connecting end portion 6a supported by one of the two structures 1 and 2 and the other structure of the two structures 1 and 2. A slide rail member 8 having a free end portion 6b to be formed and extending in the longitudinal direction (Y direction) of the seismic isolation clearance 3 is attached to the one structure, and the slide rail member 8 is attached to the longitudinal direction of the seismic isolation clearance 3. The swing rail member 9 is attached so as to be able to reciprocate in the (Y direction). As a result, when the expansion joint cover 6 is prevented from moving in the longitudinal direction (Y direction) of the seismic isolation clearance 3 with respect to the other structure, the expansion joint cover 6 is prevented from moving with respect to the one structure. The connecting end portion 6a of the expansion joint cover 6 can be connected to the swing rail member 9 so as to move in the longitudinal direction (Y direction) of the expansion joint cover 6. Further, the swing rail member 9 is formed with a convex curved surface 9d that protrudes toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 and extends in an arc shape in the vertical direction, so that the expansion joint cover 6 can be freely used. When the end portion 6b moves up and down, the expansion joint cover 6 is connected to the swing rail member 9 so that the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 tilts along the convex curved surface 9d of the swing rail member 9. It is characterized by doing.

Further, in the seismic isolation expansion joint device 5 of the present invention, a guide groove 8c extending in the longitudinal direction (Y direction) of the seismic isolation clearance 3 is formed in the lower edge portion 8b of the slide rail member 8 to form the swing rail member 9. The slide rail member 8 and the expansion joint cover are slidably engaged with the guide groove 8c and the upper edge portion 8d of the slide rail member 8 is bent toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6. It is characterized in that the gap between the end faces 6c of the connecting end portion 6a of 6 is reduced.

Further, in the seismic isolation expansion joint device 5 of the present invention, the upper edge portion 8d of the slide rail member 8 bent toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 is further subjected to the front surface of the swing rail member 9. By bending downward along the guide groove 8d, an engaging groove 8e facing the guide groove 8c is formed on the upper edge portion 8d of the slide rail member 8, and the swing rail member 9 slides on the guide groove 8c and the engaging groove 8e. It is characterized by being engaged as possible.

Further, in the seismic isolation expansion joint device 5 of the present invention, a guide groove 8c extending in the longitudinal direction (Y direction) of the seismic isolation clearance 3 is formed in the lower edge portion 8b of the slide rail member 8, and the swing rail member 9 is formed. It is slidably engaged with the guide groove 8c, the upper edge portion 8d of the slide rail member 8 is bent toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6, and further, on the back surface of the swing rail member 9. By bending downward along the line, a U-shaped bent portion 8f is formed on the upper edge portion 8d of the slide rail member 8, and the U-shaped bent portion 8f forms the upper edge portion 8d of the slide rail member 8 and the swing rail. The gap between the back surfaces of the members 9 was reduced, and the gap between the upper edge 9c on the front surface of the swing rail member 9 and the end surface 6c of the connecting end 6a of the expansion joint cover 6 was sealed with the flexible member 24. It is a feature.

Further, in the seismic isolation expansion joint device 5 of the present invention, a guide groove 8c extending in the longitudinal direction (Y direction) of the seismic isolation clearance 3 is formed in the lower edge portion 8b of the slide rail member 8 to form the swing rail member 9. Slidably engaged with the guide groove 8c, the upper edge portion 8d of the slide rail member 8 is bent toward the back surface of the swing rail member 9, and further bent upward along the back surface of the swing rail member 9. As a result, a shoulder-shaped bent portion 8 g is formed on the upper edge portion 8d of the slide rail member 8, and the gap between the upper edge portion 8d of the slide rail member 8 and the back surface of the swing rail member 9 is formed by the shoulder-shaped bent portion 8 g. The gap between the upper edge portion 8d on the front surface of the swing rail member 9 and the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 is sealed with the flexible member 24.

The seismic isolation expansion joint device 5 of the present invention also fixes a spacer 39 inside the slide rail member 8, and has a ridge 39a extending in the longitudinal direction (Y direction) of the seismic isolation clearance 3 at the top of the spacer 39. A concave groove 9e extending in the longitudinal direction (Y direction) of the seismic isolation clearance 3 is formed on the back surface of the swing rail member 9, and the concave groove 9e is slidably engaged with the ridge 39a. It is a feature.

According to the seismic isolation expansion joint device 5 of the present invention, the expansion joint cover 6 can move along the slide rail member 8 in the longitudinal direction (Y direction) of the seismic isolation clearance 3, and thus the expansion joint cover 6 There are obstacles 2c such as walls and pillars within the range of the seismic isolation stroke in the Y direction, and even if the expansion joint cover 6 collides with these obstacles 2c, the connecting portion 7 is prevented from being destroyed. can do.

Further, when an earthquake occurs, when the free end portion 6b of the expansion joint cover 6 rises along the inclined surface 26 formed in the structure 2, the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 becomes the swing rail member 9. Smoothly rolls upward along the convex curved surface 9d of. As a result, the entire expansion joint cover 6 can be smoothly tilted upward (Z direction).

Further, since the expansion joint cover 6 is firmly connected to the structure via the connecting device 7, it is possible to prevent the expansion joint cover 6 from coming off the structure.

Further, since the upper edge portion 8d of the slide rail member 8 can be bent into an arbitrary shape, the shapes of the bent portions 8f and 8g allow the connection end portion 6a of the expansion joint cover 6 and the structure 1 to be bent. The gap and the gap between the slide rail member 8 and the swing rail member 9 can be easily adjusted.

Further, by engaging the long swing rail member 9 with the long slide rail member 8, it is possible to impart high connecting strength to the connecting device 7. Further, if the slide rail assembly 21 is prepared by combining the components of the connecting device 7 in advance, the construction of the seismic isolation expansion joint device 5 can be further facilitated.
Other features of the present invention will become apparent from the description of the following examples.

FIG. 1 (a) is a plan view showing the positional relationship between the expansion joint cover and the obstacle in which the seismic isolation structure moves in the width direction (X direction) of the seismic isolation clearance, and FIG. 1 (b) is a plan view showing the positional relationship between the seismic isolation structure and the obstacle. It is a top view which shows the positional relationship between the expansion joint cover which moves in the longitudinal direction (Y direction) of a seismic isolation clearance, and an obstacle. (Example 1) FIG. 2 is an arrow view in the direction AA of FIG. 1 (b), and is a side view of the installed state of the seismic isolation expansion joint device of the present invention. (Example 1) FIG. 3 is an enlarged cross-sectional view of a portion B of FIG. (Example 1) FIG. 4 is an enlarged cross-sectional view of a portion B when the expansion joint cover of FIG. 2 is rotated in the vertical direction (Z direction). (Example 1) FIG. 5 (a) is a perspective view showing a construction procedure when the slide rail assembly of the present invention is installed on the seismic isolation structure, and FIG. 5 (b) is a slide rail installed on the seismic isolation structure. It is a perspective view which shows the construction procedure when connecting an expansion joint cover to a swing rail member of an assembly. (Example 1) FIG. 6 is a perspective view showing the positional relationship between the swing rail member and the slide rail member when the seismic isolation structure moves in the longitudinal direction (Y direction) of the seismic isolation clearance with respect to the expansion joint cover. (Example 1) FIG. 7 shows an embodiment in which a thick expansion joint cover is connected to the connecting device of the seismic isolation expansion joint device of the present invention, and is an enlarged cross-sectional view of the vicinity of the connecting end portion of this embodiment. (Example 2) FIG. 8 shows an embodiment in which the connecting device of the seismic isolation expansion joint device of the present invention is installed on the side surface (wall surface) of the seismic isolation clearance, and is an enlarged cross-sectional view of the vicinity of the connecting end portion of the expansion joint cover of this embodiment. .. (Example 2) FIG. 9 shows an embodiment in which a U-shaped bent portion is formed on the upper edge portion of the slide rail member of the seismic isolation expansion joint device of the present invention, and an enlarged cross section in the vicinity of the connecting end portion of the expansion joint cover of this embodiment. It is a figure. (Example 3) FIG. 10 shows an embodiment in which a shoulder-shaped bent portion is formed on the upper edge portion of the slide rail member of the seismic isolation expansion joint device of the present invention, and is an enlarged cross-sectional view of the vicinity of the connecting end portion of the expansion joint cover of this embodiment. Is. (Example 4) FIG. 11 shows another embodiment in which a shoulder-shaped bent portion is formed on the upper edge portion of the slide rail member of the seismic isolation expansion joint device of the present invention, and is an enlargement of the vicinity of the connecting end portion of the expansion joint cover of this embodiment. It is a cross-sectional view. (Example 4) FIG. 12 shows an embodiment in which the connecting device of FIG. 11 is installed on the side surface (wall surface) of the seismic isolation clearance, and is an enlarged cross-sectional view of the vicinity of the connecting end portion of the expansion joint cover of this embodiment. (Example 4)

An expansion joint cover is laid over the seismic isolation clearance that allows the seismic isolation structure to move horizontally (X and Y directions), and the seismic isolation structure is connected to another structure separated by the seismic isolation clearance. , Seismic isolation expansion joint device.

1 to 6 show the first embodiment of the present invention. The movement of the seismic isolation structure 1 in the horizontal direction is performed between the seismic isolation structure 1 and another structure 2 structurally separated from the seismic isolation structure 1 such as the foundation structure of the seismic isolation structure 1. A seismic isolation clearance 3 is formed to enable it. As shown in FIGS. 1 and 2, the seismic isolation clearance 3 forms a groove 4 having an open upper portion around the seismic isolation structure 1. The seismic isolation expansion joint device 5 has an expansion joint cover 6. The expansion joint cover 6 is a flooring material that is bridged over the seismic isolation clearance 3 to connect the seismic isolation structure 1 to another structure 2. As shown in FIG. 1, a plurality of expansion joint covers 6 are arranged side by side in the longitudinal direction (Y direction) of the seismic isolation clearance 3 so as to close the groove 4 formed by the seismic isolation clearance 3.

As shown in FIG. 5, the seismic isolation expansion joint device 5 has a connecting device 7 for connecting the expansion joint cover 6 to the seismic isolation structure 1. The connecting device 7 includes a slide rail member 8, a swing rail member 9, angle members 10 and 11, fastening bolts 12 and nuts 13, connecting bolts 14, and a flat bar 15. The flat bar 15 is composed of a flat metal plate, and is used to raise the expansion joint cover 6 so that the upper surface 6a of the expansion joint cover 6 is aligned with the upper surface 1a of the seismic isolation structure 1. The angle member 10 is formed with a hole (not shown) for driving the concrete screw 16 into the skeleton of the seismic isolation structure 1, and the angle member 11 is sandwiched with an anchor bolt insertion hole (not shown). A pair of nuts 17 and 18 are fixed on both sides thereof. Anchor bolts 19 are screwed into the nuts 17 and 18, and the anchor bolts 19 are tightened to the anchor bolt receiver 20 embedded in the skeleton of the seismic isolation structure 1. The required number of concrete screws 16 and anchor bolts 19 are used. The required number of holes (not shown) and anchor bolt insertion holes (not shown) formed in the angle member 10 for driving the concrete screw 16 are formed, and the nuts are formed accordingly. The required number of 17 and 18 and the anchor bolt receiver 20 are also installed.

The connecting device 7 fastens the slide rail member 8 and the angle members 10 and 11 with the fastening bolt 12 and the nut 13, inserts the connecting bolt 14 into the elongated hole 9a formed in the swing rail member 9, and inserts the connecting bolt 14 into the swing rail member 9. By assembling the slide rail member 8 and further fixing the flat bar 15 to the angle member 10, the slide rail assembly 21 can be assembled in advance at a factory or the like as shown in FIG. 5 (a). In the seismic isolation structure 1, a mounting portion 1b of the connecting device 7 is formed along the seismic isolation clearance 3, and the connecting device 7 is fixed to the mounting portion 1b by concrete screws 16 and anchor bolts 19. Next, as shown in FIG. 5 (b), the mortar 22 is laid on the skeleton of the seismic isolation structure 1, the surface finishing material 23 is constructed on the mortar, and the surface finishing material 23 and the slide rail member 8 are separated from each other. The gap is sealed with the sealing material 24.

As shown in FIG. 2, another structure 2 structurally separated from the seismic isolation structure 1 by the seismic isolation clearance 3 corresponds to the attachment portion 1b of the connecting device 7 formed in the seismic isolation structure 1. An erection portion 2a of the expansion joint cover 6 is formed at the position. A pedestal 25 is provided on the erection portion 2a with mortar or the like according to the thickness of the expansion joint cover 6, and an inclined surface 26 is formed at the tip end portion of the pedestal 25. The inclined surface 26 smoothly connects the upper surface 25a of the pedestal 25 and the upper surface 2b of the skeleton of the structure 2. As shown in FIG. 1, the structure 2 may have an obstacle 2c such as a wall or a pillar adjacent to the erection portion 2a of the expansion joint cover 6 formed in the structure 2. In this case, the expansion joint cover 6 is erected between the connecting device 7 fixed to the seismic isolation structure 1 and the pedestal 25 of the structure 2, and can be arranged so as to extend along the obstacle 2c. ..

As shown in FIGS. 1 and 2, the expansion joint cover 6 has a connecting end portion 6a connected to the seismic isolation structure 1 via a connecting device 7 and a free end supported by the structure 2 via a pedestal 25. It has a part 6b. In the expansion joint cover 6, the connecting end portion 6a is placed on the flat bar 15, the free end portion 6b is placed on the pedestal 25, and the expansion joint cover 6 is bridged over the seismic isolation clearance 3. At this time, as shown in FIG. 3, the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 is located so as to face the swing rail member 9, and as shown in FIG. 1, the longitudinal direction of the seismic isolation clearance 3 ( It extends in the Y direction). Bolt boxes 6d and 6d are formed at both ends of the connecting end 6a of the expansion joint cover 6 in the Y direction, and the upper openings of the bolt boxes 6d and 6d are closed by the lid 6e, respectively. The lid body 6e is detachably fixed by the fixing bolts 6f. As shown in FIG. 5B, elongated holes 6g and 6g penetrating inside the bolt boxes 6d and 6d are formed on the end surface 6c of the connecting end portion 6a of the expansion joint cover 6, respectively. Then, as shown in FIG. 3, the connecting bolt 14 of the connecting device 7 is inserted into these elongated holes 6g and 6g, and the double nut 28 is sandwiched between the bolt boxes 6d and 6d from the inside of the bolt boxes 6d and 6d. By screwing 29 and tightening it, the expansion joint cover 6 can be connected to the connecting device 7.

As shown in FIG. 3, the slide rail member 8 of the connecting device 7 is formed of a material such as stainless steel in a substantially channel shape, and the slide rail member 8 faces the end surface 6c of the connecting end portion 6a of the expansion joint cover 6. It has an open groove 8a to be used. The open groove 8a extends in the longitudinal direction of the slide rail member 8. A guide groove 8c is formed in the lower edge portion 8b of the slide rail member 8. The guide groove 8c extends in the longitudinal direction of the slide rail member 8. The lower edge portion 9b of the swing rail member 9 is slidably engaged with the guide groove 8c. The upper edge portion 8d of the slide rail member 8 is bent toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6, and is further bent downward along the front surface of the swing rail member 9. As a result, the engaging groove 8e is formed in the upper edge portion 8d of the slide rail member 8. The engaging groove 8e extends in the longitudinal direction of the slide rail member 8. The upper edge portion 9c of the swing rail member 9 is slidably engaged with the engaging groove 8e.

As shown in FIG. 3, the swing rail member 9 can be formed of, for example, an extruded shape member of an aluminum alloy. A convex curved surface 9d is formed on the front surface of the swing rail member 9 so as to project toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 and extend in an arc shape in the vertical direction. The convex curved surface 9d can be formed as a single ridge extending in the longitudinal direction of the swing rail member 9. Further, the convex curved surface 9d can be formed over the entire length of the swing rail member 9. As described above, the swing rail member 9 is formed with elongated holes 9a extending in the vertical direction. The elongated hole 9a is a through hole having an opening in the back surface of the swing rail member 9 and the convex curved surface 9d. A plurality of elongated holes 9a of the swing rail member 9 are formed so that all or part of the elongated holes 9a overlap the corresponding elongated holes 6g of the connecting end portion 6b of the expansion joint cover 6.

As shown in FIGS. 1 and 2, a safety cover 31 is attached to the free end portion 6b of the expansion joint cover 6 via a hinge shaft 30. In normal times, the safety cover 31 has the upper surface 6h of the expansion joint cover 6 continuous with the upper surface 2b of the structure 2, as shown in FIG. The expansion joint cover 6 is provided in the X direction (the direction in which the width of the groove 4 increases or decreases) in FIG. 1 (a) and the Y direction (the longitudinal direction of the groove 4) in FIG. 1 (b) with respect to the structure 2. Is placed on the pedestal 25 so that it can also slide. However, as shown in FIG. 1 (a), when one of the expansion joint covers 6, 6 ... Is installed adjacent to an obstacle 2c such as a wall or a pillar of the structure 2, when it is installed adjacent to the obstacle 2c. The expansion joint cover 6 can reciprocate in the X direction with respect to the structure 2, but cannot move in the Y direction toward the obstacle 2c. That is, the seismic isolation structure 1 moves relatively to the position of reference number 1c in the X direction with respect to the structure 2, and the tip edge 31a of the safety cover 31 is relative to the position of reference number 31b in the X direction with respect to the seismic structure 2. Although there is no collision between the expansion joint cover 6 and the obstacle 2c when moving in a targeted manner, as shown in FIG. 1 (b), the seismic isolation structure 1 reaches the position of the reference number 1d in the Y direction with respect to the structure 2. When moving relative to each other, collision between the expansion joint cover 6 and the obstacle 2c is unavoidable unless the expansion joint cover 6 moves in the Y direction with respect to the seismic isolation structure 1. As shown in FIG. 6, the seismic isolation expansion joint device 5 of the present invention has a seismic isolation structure for the expansion joint cover 6 by sliding the swing rail member 9 along the slide rail member 8 in such a case. Move the object 1 in the Y direction.

In the seismic isolation expansion joint device 5 of the present invention, as shown in FIG. 1 (a), when the expansion joint cover 6 moves in the X direction with respect to the structure 2, and the moving distance exceeds a predetermined distance, the expansion joint cover 6 The free end portion 6b of 6 rises along the inclined surface 26 of the structure 2, and the expansion joint cover 6 rotates in the Z direction (upward direction) of FIG. At this time, as shown in FIG. 4, the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 is inclined by engaging the end surface 6c with the upper portion of the central portion of the convex curved surface 9d. In this way, the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 tilts, slides, and / or tilts with respect to the convex curved surface 9d of the swing rail member 9. I will use the term. Since the shape of the convex curved surface 9d is formed by a smooth curved surface having a protruding central portion so as not to hinder the rotation of the connecting end portion 6a of the expansion joint cover 6, the connecting end portion 6a of the expansion joint cover 6 is formed. The end face 6c of the above can be smoothly tilted to a required angle along the convex curved surface 9d. The above is the case where the free end portion 6b of the expansion joint cover 6 rises in the Z direction, but the expansion joint cover 6 is also convex when the free end portion 6b rises and then descends along the inclined surface 26. It can tilt smoothly along the curved surface 9d.

That is, the elongated holes 9a of the swing rail member 9 and the elongated holes 6g formed in the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 are composed of elongated holes extending in the vertical direction. In the elongated hole 9a of the swing rail member 9, when the free end portion 6b of the expansion joint cover 6 rotates in the Z direction, the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 is a convex curved surface of the swing rail member 9. The connecting bolt 14 must be in a form that can be tiltably guided in the vertical direction so that the connecting bolt 14 can be tilted in the vertical direction along 9d. Further, the elongated hole 6g of the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 is the end surface of the connecting end portion 6a of the expansion joint cover 6 when the free end portion 6b of the expansion joint cover 6 rotates in the Z direction. The connecting bolt 14 must be able to be tiltably guided in the vertical direction so that the 6c can be tilted in the vertical direction along the convex curved surface 9d of the swing rail member 9. The morphology of these elongated holes 9a and 6g can be determined by the dimensions of the length and width of the elongated holes and the position at which the opening of the elongated holes is formed. The lengths of these elongated holes 9a and 6g can be different.

Further, the length of the swing rail member 9 can be made substantially the same as the width of the connecting end portion 6a of the expansion joint cover 6. In this case, one expansion joint cover 6 is connected to one swing rail member 9. Further, the length of the swing rail member 9 can be made to be a plurality of times the width of the expansion joint cover 6 on the connecting end portion 6a side. In this case, a plurality of expansion joint covers 6 can be connected to one swing rail member 9. Further, the swing rail member 9 and the expansion joint cover 6 can be connected by a plurality of connecting devices 7.

When the free end portion 6b of the expansion joint cover 6 rises along the inclined surface 26 of the structure 2, the expansion joint cover 6 may have a reaction force received from the inclined surface 26 depending on the magnitude and direction of the reaction force of the expansion joint cover 6. The connecting end portion 6a may be lifted from the flat bar 15. Even in such a case, after that, the connecting end portion 6a of the expansion joint cover 6 is lowered by its own weight and supported by the flat bar 15.

FIG. 7 shows an example in which the expansion joint cover 60 thicker than the expansion joint cover 6 of the first embodiment is installed by using the coupling device 7 of the first embodiment. In this embodiment, a spacer 32 is interposed between the connecting device 7 and the angle member 10 in order to match the upper edge portion 8d of the slide rail member 8 with the upper surface 6h of the thick expansion joint cover 60. The spacer 32 is fixed to the angle members 10 and 11 by the bag nut 34. Further, in order to prevent the swing rail member 9 from tilting with respect to the slide rail member 8, the spacer 33 is fixed to the back surface of the swing rail member 9 with screws 33a. The remaining configuration is the same as that of the first embodiment described above. In FIG. 7, the same reference numbers as those used in FIGS. 1 to 6 indicate the same components.

FIG. 8 shows that the expansion joint cover 60, which is thicker than the expansion joint cover 6 of the first embodiment, is attached to the side surface (wall surface) of the seismic isolation clearance 3 of the seismic isolation structure 1 by using the connecting device 7 of the first embodiment. The installed embodiment is shown. In this embodiment, the profile 36 is fixed to the side surface (wall surface) of the seismic isolation clearance 3, and the connecting device 7 is directly fixed to the profile 36 by the fastening bolt 12 and the nut 13. In this embodiment, the angle members 10 and 11 of the first embodiment are not used. The profile 36 is fixed to the side surface (wall surface) of the seismic isolation clearance 3 by the nut 35a screwed into the stud bolt 35 and the fastening bolt 12 and the nut 13 embedded in the mortar 22. A shelf portion 36a is formed on the shape member 36, and the connecting device 7 is arranged on the shelf portion 36a via a spacer 32. The spacer 32 is fixed to the profile 36. When the connecting end portion 6a of the expansion joint cover 60 is connected to the connecting device 7, the connecting end portion 6a of the expansion joint cover 60 is supported by the shelf portion 36a of the profile 36, so that the connecting device 7 is the expansion joint cover. It is not necessary to support the connecting end 6a of 60. The remaining configuration is the same as that of the first embodiment described above. In FIG. 8, the same reference numbers as those used in FIGS. 1 to 7 indicate the same components.

In FIG. 9, the upper edge portion 8d of the slide rail member 8 of the embodiment of FIG. 7 is bent toward the end surface 6c of the connecting end portion 6a of the expansion joint cover 6, and further along the back surface of the swing rail member 9. An embodiment in which a U-shaped bent portion 8f is formed on the upper edge portion 8d of the slide rail member 8 by bending downward is shown. The U-shaped bent portion 8f can reduce the gap between the upper edge portion 8d of the slide rail member 8 and the back surface of the swing rail member 9. Further, the gap between the upper edge portion 9c on the front surface of the swing rail member 9 and the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 was sealed with a flexible sealing material 37. The remaining configuration is the same as that of the first embodiment described above. In FIG. 9, reference numbers that are the same as the reference numbers used in FIGS. 1 to 8 indicate the same components.

FIG. 10 shows a slide rail by bending the upper edge portion 8d of the slide rail member 8 of FIG. 7 toward the back surface of the swing rail member 9 and further bending it upward along the back surface of the swing rail member 9. An example in which a shoulder-shaped bent portion 8 g is formed on the upper edge portion 8d of the member 8 is shown. The shoulder-shaped bent portion 8g can reduce the gap between the upper edge portion 8d of the slide rail member 8 and the back surface of the swing rail member 9. Further, the gap between the upper edge portion 9c on the front surface of the swing rail member 9 and the end surface 6c of the connecting end portion 6a of the expansion joint cover 6 was sealed with a flexible sealing material 37. Further, the spacer 38 is fixed to the lower end portion 9b on the front surface of the swing rail member 9 by a screw 38a, and the spacer 38 and the spacer 33 fixed to the back surface of the swing rail member 9 by a screw 33a are used to form the inside of the guide groove 8c. The posture of the swing rail member 9 can be stabilized. The remaining configuration is the same as that of the first embodiment described above. In FIG. 10, the same reference numbers as those used in FIGS. 1 to 9 indicate the same components.

FIG. 11 shows a concave groove 9e in which a spacer 39 is fixed inside the slide rail member 8 of the connecting device 7 of the embodiment of FIG. 10 and a ridge 39a formed on the top of the spacer 39 is formed on the back surface of the swing rail member 9. An embodiment in which the vehicle is slidably engaged with the vehicle is shown. The ridge 39a extends in the longitudinal direction (Y direction) of the seismic isolation clearance 3, and the concave groove 9e also extends in the longitudinal direction (Y direction) of the seismic isolation clearance 3. As a result, the swing rail member 9 can slide in the longitudinal direction of the swing rail member 9, and it is possible to prevent the swing rail member 9 from inclining toward the connecting end portion 6a of the expansion joint cover 60. Therefore, the swing rail member 9 can slide in a stable posture along the guide groove 8c of the slide rail member 8. The remaining configuration is the same as that of the first embodiment described above. In FIG. 11, reference numbers that are the same as the reference numbers used in FIGS. 1 to 10 indicate the same components.

FIG. 12 shows that the profile 40 is fixed to the side surface (wall surface) of the seismic isolation clearance 3 of the seismic isolation structure 1 by the stud bolt 35 and the nut 35a, and is placed on the shelf portion 40a of the profile 40 via the spacer 32. An embodiment in which the connecting device 7 of 11 is arranged is shown. The connecting device 7 of this embodiment is fixed to the angle member 10 together with the anchor member 41 by the fastening bolt 12 and the nut 13, and is fixed to the skeleton of the seismic isolation structure 1 by the mortar 22. Since the connecting end portion 6a of the expansion joint cover 60 is supported by the profile 40, it is possible to prevent an excessive load from being applied to the connecting device 7. Further, since the anchor member 41 is embedded in the mortar 22, the fixing force of the angle member 10 is also enhanced. The remaining configuration is the same as that of the first embodiment described above. In FIG. 12, reference numbers that are the same as the reference numbers used in FIGS. 1 to 11 indicate the same components.

The seismic isolation expansion device of the present invention provides the expansion joint cover and these obstacles even when there are obstacles such as walls and columns within the movement range of the seismic isolation clearance of the expansion joint cover in the longitudinal direction (Y direction). It is possible to prevent a collision with. Even when the seismic isolation structure moves relative to the width direction (X direction) of the seismic isolation clearance and the expansion joint cover rotates in the vertical direction (Z direction), the expansion joint cover can be smoothly tilted. The seismic isolation expansion joint device of the present invention can be installed between a seismic isolation structure and a non-seismic isolation structure, or can be installed between a seismic isolation structure and a seismic isolation structure.

1 Seismic isolation structure 2 Another structure 3 Seismic isolation clearance 4 Groove 5 Seismic isolation expansion joint device 6 Expansion joint cover 60 Thick expansion joint cover 6a Connecting end 6b Free end 6c Connecting end end face 6d Bolt box 6e Lid Body 6f Fixing bolt 6g Long hole 6h Top surface 7 Connecting device 8 Slide rail member 8a Open groove 8b Lower edge 8c Guide groove 8d Upper edge 8e Engagement groove 8f U-shaped bend 8g Shoulder bend 9 Swing rail Member 9a Long hole 9b Lower edge 9c Upper edge 9d Convex curved surface 9e Concave groove 10, 11 Angle member 12 Fastening bolt 13 Nut 14 Connecting bolt 15 Flat bar 21 Slide rail assembly 24 Sealing material 25 Pedestal 26 Inclined surface 27 Washer Plate 28, 29 Double nut 30 Hing shaft 31 Safety cover 36 Shape 36a Shelf 37 Flexible sealing material 39 Spacer 39a Protrusion 40 Shape 40a Shelf 41 Anchor member

Claims (5)

In a seismic isolation expansion joint device that connects the seismic isolation structure to another structure by an expansion joint cover spanning the seismic isolation clearance of the seismic isolation structure, the expansion joint cover is the two structures. It has a connecting end supported by one of the structures and a free end supported by the other of the two structures, and the one structure has a longitudinal direction of the seismic isolation clearance. A slide rail member extending to the above is attached, a swing rail member is attached to the slide rail member so as to be reciprocating in the longitudinal direction of the seismic isolation clearance, and the expansion joint cover is the longitudinal length of the seismic isolation clearance with respect to the other structure. The swing rail member is attached to the connecting end of the expansion joint cover so that the expansion joint cover moves in the longitudinal direction of the seismic isolation clearance with respect to the one structure when prevented from moving in the direction. The swing rail member is formed with a convex curved surface that projects toward the end surface of the connecting end portion of the expansion joint cover and extends in an arc shape in the vertical direction. When the free end moves up and down, the expansion joint cover is tilted along the convex curved surface of the swing rail member so that the end surface of the connecting end of the expansion joint cover tilts along the convex curved surface of the swing rail member. in seismic isolation expansion joints devices coupled to,
A guide groove extending in the longitudinal direction of the seismic isolation clearance is formed in the lower edge portion of the slide rail member, the swing rail member is slidably engaged with the guide groove, and the upper edge of the slide rail member is slidably engaged. By bending the portion toward the end surface of the connecting end portion of the expansion joint cover, the gap between the slide rail member and the end surface of the connecting end portion of the expansion joint cover is reduced. Seismic isolation expansion joint device . In the seismic isolation expansion joint device according to claim 1, the upper edge portion of the slide rail member bent toward the end surface of the connecting end portion of the expansion joint cover is further attached to the front surface of the swing rail member. By bending downward along the guide groove, an engaging groove facing the guide groove is formed at the upper edge portion of the slide rail member, and the swing rail member can be slidable between the guide groove and the engaging groove. The seismic isolation expansion joint device, characterized in that it is engaged with. In a seismic isolation expansion joint device that connects the seismic isolation structure to another structure by an expansion joint cover spanning the seismic isolation clearance of the seismic isolation structure, the expansion joint cover is the two structures. It has a connecting end supported by one of the structures and a free end supported by the other of the two structures, and the one structure has a longitudinal direction of the seismic isolation clearance. A slide rail member extending to the above is attached, a swing rail member is attached to the slide rail member so as to be reciprocating in the longitudinal direction of the seismic isolation clearance, and the expansion joint cover is the longitudinal length of the seismic isolation clearance with respect to the other structure. The swing rail member is attached to the connecting end of the expansion joint cover so that the expansion joint cover moves in the longitudinal direction of the seismic isolation clearance with respect to the one structure when prevented from moving in the direction. The swing rail member is formed with a convex curved surface that projects toward the end surface of the connecting end portion of the expansion joint cover and extends in an arc shape in the vertical direction. When the free end moves up and down, the expansion joint cover is tilted along the convex curved surface of the swing rail member so that the end surface of the connecting end of the expansion joint cover tilts along the convex curved surface of the swing rail member. In the seismic isolation expansion joint device connected to
A guide groove extending in the longitudinal direction of the seismic isolation clearance is formed in the lower edge portion of the slide rail member, the swing rail member is slidably engaged with the guide groove, and the upper edge of the slide rail member is slidably engaged. By bending the portion toward the end surface of the connecting end portion of the expansion joint cover and further bending downward along the back surface of the swing rail member, the upper edge portion of the slide rail member is formed. A U-shaped bend is formed, and the U-shaped bend reduces the gap between the upper edge of the slide rail member and the back surface of the swing rail member, and is above the front surface of the swing rail member. characterized in that a gap between the end face of the connecting end of the the edge expansion joint cover and sealed with a flexible member, seismic isolation expansion joints device. In a seismic isolation expansion joint device that connects the seismic isolation structure to another structure by an expansion joint cover spanning the seismic isolation clearance of the seismic isolation structure, the expansion joint cover is the two structures. It has a connecting end supported by one of the structures and a free end supported by the other of the two structures, and the one structure has a longitudinal direction of the seismic isolation clearance. A slide rail member extending to the above is attached, a swing rail member is attached to the slide rail member so as to be reciprocating in the longitudinal direction of the seismic isolation clearance, and the expansion joint cover is the longitudinal length of the seismic isolation clearance with respect to the other structure. The swing rail member is attached to the connecting end of the expansion joint cover so that the expansion joint cover moves in the longitudinal direction of the seismic isolation clearance with respect to the one structure when prevented from moving in the direction. The swing rail member is formed with a convex curved surface that projects toward the end surface of the connecting end portion of the expansion joint cover and extends in an arc shape in the vertical direction. When the free end moves up and down, the expansion joint cover is tilted along the convex curved surface of the swing rail member so that the end surface of the connecting end of the expansion joint cover tilts along the convex curved surface of the swing rail member. In the seismic isolation expansion joint device connected to
A guide groove extending in the longitudinal direction of the seismic isolation clearance is formed in the lower edge portion of the slide rail member, the swing rail member is slidably engaged with the guide groove, and the upper edge of the slide rail member is slidably engaged. A shoulder-shaped bent portion is formed on the upper edge portion of the slide rail member by bending the portion toward the back surface of the swing rail member and further bending the portion upward along the back surface of the swing rail member. Then, the shoulder-shaped bent portion reduces the gap between the upper edge portion of the slide rail member and the back surface of the swing rail member, and the upper edge portion of the front surface of the swing rail member and the expansion joint cover. characterized in that the gap between the end face of the connecting end is sealed by a flexible member, seismic isolation expansion joints device. In the seismic isolation expansion joint device according to claim 4 , a spacer is fixed inside the slide rail member, a ridge extending in the longitudinal direction of the seismic isolation clearance is formed at the top of the spacer, and the swing rail. The seismic isolation expansion joint device, characterized in that a concave groove extending in the longitudinal direction of the seismic isolation clearance is formed on the back surface of the member, and the concave groove is slidably engaged with the ridge.

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