JP4575582B2 - Floor expansion joint device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor expansion joint device that closes a gap such as a joint space existing between two buildings adjacent to each other in a state in which relative displacement between buildings due to an earthquake or the like is allowed.
[0002]
[Prior art]
FIG. 6 is a vertical cross-sectional view showing a typical conventional expansion joint device 1 for floor, and a similar technique is disclosed in, for example, Japanese Patent Laid-Open No. 10-30278. The floor expansion joint device 1 includes a cover main body 5 provided between the housings 4a and 4b, which are concrete slabs of two buildings 3a and 3b adjacent to each other with a gap 2 existing as a joint space. The first cover body 6 that covers the remaining area near the one housing 4a excluding a part on the other housing 4b side from above, and the end portions of the first cover body 6 and the cover body 5 on the other housing 4b side A second cover body 7 that covers the cover body 5 from above, guide rollers 8a and 8b that are provided on the cover body 5 and support the cover body 5 on one housing 4a, and a plurality of anchor bolts and nuts on the other housing 4b. And a fixing member 11 for fixing the second cover body 7 on the mounting member 10.
[0003]
The cover body 5 is connected to the first cover body 6 by a guide rod 12 so as to be displaceable in the front-rear direction perpendicular to the paper surface of FIG. The cover body 5 is also supported by the guide rollers 8a and 8b so as to be displaceable in the left-right direction (left-right direction in FIG. 6) on one housing 4a. A parting portion 13 that is inclined downward toward the outer side, which is the left side of FIG. At the end of the second cover body 7 on the other housing 4b side, a parting part 14 is formed which is inclined downward toward the outer side, which is the right side of FIG.
[0004]
As described above, according to this conventional technique, even if each building 3a, 3b undergoes a relative displacement in the front-rear direction and the left-right direction, the displacement 2 is allowed to be maintained in a state where the gap 2 is closed. It is configured.
[0005]
[Problems to be solved by the invention]
In the above conventional technique, the cover body 5, the first cover body 6, and the second cover body 7 are placed in a stacked state on the floor surface of each housing 4a, 4b. δ1 and δ2 are large, and for example, a step of 20 to 30 mm is generated. As described above, when the protruding amounts δ1 and δ2 from each floor are large, it is easy for elderly people, persons with physical disabilities and wheelchairs to pass, and the floor can pass more smoothly and safely. Expansion joint devices are desired.
[0006]
An object of the present invention is to provide a floor expansion joint device in which steps protruding from each floor surface are reduced as much as possible so that the floor expansion joint device can pass smoothly and safely.
[0007]
[Means for Solving the Problems]
In the first aspect of the present invention, in the left-right direction that is close to and away from each other, and in the front-rear direction that is perpendicular to the left-right direction on the horizontal plane, between the housings of two buildings adjacent to each other with a gap. The cover body that closes the gap is provided in substantially the same plane as the floor surface of each housing, in a state in which the relative displacement is allowed.
One housing is formed with a recess, and a plurality of first movable support means for supporting the cover body movably in the left-right direction and the front-rear direction are provided in the recess at intervals in the left-right direction and the front-rear direction. ,
A guide member extending in the front-rear direction is provided on the opposite wall surface facing the one case of the other case so that the displacement can be adjusted in the up-down direction and the left-right direction,
A second movable support means supported by the guide member so as to be movable in the front-rear direction is provided at the end on the other housing side of the cover body,
The floor expansion joint device is characterized in that a parting member is provided on at least one of the left and right ends of the cover body.
[0008]
According to the present invention, the second movable support means is guided in the front-rear direction by fixing the guide member to the opposite wall surface of the other casing, and only the movement of the cover body in the front-rear direction is allowed. A plurality of first movable support means are installed in the concave portion of one housing, and the cover body is movable and stable in the left-right direction and the front-back direction without projecting greatly from the floor surface of the one housing. Supported.
[0009]
As described above, the plurality of first movable support means are provided in the recesses formed in one casing, and the second movable support means is supported by the guide member provided on the opposite wall surface of the other casing. It is possible to install the main body at almost the same height as each floor surface, and the amount of protrusion of the cover main body from each floor surface is reduced as much as possible, so that there is substantially no step when passing, and the elderly and body Disabled persons and passers-by such as wheelchairs can pass smoothly and safely.
[0010]
In addition, since the plurality of first movable support means are provided at intervals in the left-right direction and the front-rear direction in the concave portion of one housing, the cover body can be stably attached regardless of the movement in the left-right direction and the front-rear direction. In addition to being able to support, it is prevented from being greatly bent due to the weight of the passerby when passing, thereby preventing the occurrence of a step with respect to the floor surface of each housing of the cover body.
[0011]
Furthermore, since the guide member provided on the opposing wall surface of the other housing can be adjusted in the vertical and horizontal directions, the opposing wall surface of the guide member can be reduced so that the amount of protrusion of the cover body from each floor surface is as small as possible. The vertical mounting position and the horizontal mounting position can be adjusted to eliminate unnecessary steps such as upward lifting on each floor, which also improves safety. Is done. Furthermore, since at least one of the left and right ends of the cover body is provided with a parting member, the end surface of the cover body is covered with the parting member, and therefore the end surface of the cover body is exposed on the floor surface. As a result, it is possible to prevent a level difference from occurring, and this also enables smooth passage and improves safety.
[0012]
The present invention according to claim 2, in the left-right direction that is close to and away from each other, and in the front-rear direction perpendicular to the left-right direction on the horizontal plane, between the two adjacent building bodies with a gap. In a state in which relative displacement is allowed, a cover body that closes the gap is provided in substantially the same plane as the floor surface of each housing,
A guide member extending in the front-rear direction is provided on the opposite wall surface facing the one case of the other case so that the displacement can be adjusted in the up-down direction and the left-right direction,
The cover body is movably supported in the front-rear direction and the left-right direction by a plurality of first movable support means provided in a recess formed on one housing with a space in the left-right direction and the front-rear direction, The second movable support means guided by the guide member is supported so as to be movable in the front-rear direction.
One housing is provided with a fixed cover body that covers a region disposed on one housing of the cover body from above,
The floor expansion joint device is characterized in that an auxiliary support member is interposed between the fixed cover body and the recess.
[0013]
According to the present invention, the cover main body is supported by the first movable support means so as to be movable in the left-right direction and the front-rear direction in the concave portion of one housing, and the opposite wall surface of the other housing surface is supported by the second movable support means. It is supported movably in the direction. A plurality of the first movable support means are provided in the concave portion of one of the casings at intervals in the left-right direction and the front-rear direction, so that the cover body can be stably supported. Further, since the cover body is prevented from being greatly bent by the weight of the passerby, the occurrence of steps and gaps due to the bending is prevented, and the safety during passage is improved.
[0014]
In addition, a fixed cover body is provided on one casing, and the fixed cover body covers the area disposed on the one casing of the cover body from above, so that the area exposed to the upper side of the cover body is exposed. Less, there is no protruding part, it is possible to secure a wide space that can allow the movement of the cover body between the fixed cover body and the recessed part, and to allow large relative displacement between buildings It becomes.
[0015]
Further, since the auxiliary support member is interposed between the fixed cover body and the recessed portion, bending of the fixed cover body is also prevented by this auxiliary support member, and the cover body can be freely moved between the fixed cover body and the recessed portion. Can be moved to. As a result, even if the housings are greatly displaced in directions away from each other, the fixed cover body is supported by the auxiliary support member, so that the fixed cover body is prevented from being greatly bent, the occurrence of a step is eliminated, and safety is improved. In addition to being improved, a certain distance can be ensured between the fixed cover body and the recess by the auxiliary support member, so that the cover body can always move smoothly between the fixed cover body and the recess. It becomes.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a vertical sectional view showing a floor expansion joint device 21 according to an embodiment of the present invention. The floor expansion joint device 21 according to the present embodiment has the buildings 23a, 23b extending between the housings 24a, 24b, which are concrete slabs of two adjacent buildings 23a, 23b with a gap 22 provided as a joint space. In the state in which relative displacement in the left-right direction A and the front-rear direction perpendicular to the left-right direction A on the horizontal plane (direction perpendicular to the paper surface of FIG. 1) B on the horizontal plane is allowed. A plurality of first movable support means 27a, 27b for supporting the cover body 25 movably in the left-right direction A and the front-rear direction B in a recess 26 formed in one housing 24a; Of the opposing wall surfaces 28a, 28b of the housings 24a, 24b facing each other, the opposing wall surface 28b of the other housing 24b facing the one housing 24a is vertically moved (upper direction in FIG. 1). Direction) C and left and right direction A are provided so as to be adjustable in displacement, and are provided at the guide member 29 extending in the front-rear direction B perpendicular to the paper surface of FIG. The second movable support means 30 supported by the member 29 so as to be movable in the front-rear direction B, the parting member 31 provided on the guide member 29 so that the displacement can be adjusted in the vertical direction C, and the one side 24a side of the cover main body 25. And another parting member 32 fixed to the end.
[0017]
The cover main body 25 includes a substrate 35 made of, for example, a steel plate, and a surface plate 36 fixed to the upper surface of the substrate 35 by a known fixing means such as a screw or welding. The parting member 32 provided at the end on the one housing 24a side is fixed to the substrate 35 with screws 37. A base material 38 is fixed to the concave portion 26 of one housing 24a with a space in the left-right direction A and close to the gap 22, and the base material 38 is arranged so that the first movable support means 27a is perpendicular to the plane of FIG. A plurality are provided at intervals in the direction B.
[0018]
A base material 41 is fixed by anchor bolts 39 and nuts 40 on the outer side of the base material 38, that is, on the left side in FIG. The base material 41 is provided with a plurality of the first movable support means 27b at intervals in the front-rear direction B. A space outside the base materials 38 and 41 of the recess 26 is filled with a filler 59 realized by cement mortar or the like. The upper surface of the filler 59 is separated from the lower surface of the cover body 25 supported by the first movable support means 27a and 27b with a slight gap.
[0019]
Each of the first movable support means 27a and 27b is realized by a ball caster including spherical rollers 27a1 and 27b1 that can freely roll in an arbitrary direction. As described above, each of the first movable support means 27a and 27b is realized by a ball caster, so that the cover body 25 is supported in a state where the rollers 27a1 and 27b1 are in point contact with the lower surface thereof, and the sliding friction is as much as possible. The cover body 25 moves smoothly with respect to one of the buildings 23a even if a relative displacement between the buildings 23a and 23b suddenly occurs in an arbitrary direction on a horizontal plane by reducing the sliding resistance. The cover body 25 is prevented from being damaged.
[0020]
Furthermore, since the cover body 25 itself is directly in contact with and supported by the rollers 27a1 and 27b1 by the first movable support means 27a and 27b made of a ball caster as described above, there is no need to provide a separate member such as a rail. Easy to install. In addition, the first movable support means 27a and 27b need not be provided over the entire length, but need only be provided at a position where the bending of the cover body 25 is minimized. The degree can be improved, and the mechanism for supporting the cover body 25 can be simplified.
[0021]
FIG. 2 is an enlarged cross-sectional view for explaining a state in which the first movable support means 27a and 27b are attached to one housing 24a. As described above, the first movable support means 27a and 27b are provided on the base materials 38 and 41, respectively. Therefore, even if the upper surface of the concave portion 26 of one casing 24a is not accurately finished, The movable support means 27a and 27b can be accurately placed at the same height aligned in the direction perpendicular to the paper surface of FIG. In addition, since the plurality of first movable support means 27a and 27b are provided at intervals in the left-right direction A and the front-rear direction B, the cover main body 25 can be stably supported and is disposed at least near the gap 22. Since the cover main body 25 is always supported by the first movable support means 27a, even if the buildings 23a and 23b come close to and move away from each other, the cover main body 25 is not supported and is bent downward. When 24a and 24b return and are displaced in directions close to each other, the cover main body 25 does not return smoothly onto the first movable support means 27a and 27b. For example, the parting member 32 at the side end portion is the outer first member. (2) It is possible to prevent a problem that the movable support means 27b is bent downward and is not surely returned to the spherical roller and is damaged.
[0022]
In the state where the cover main body 25 is supported by the first movable support means 27a and 27b, the parting member 32 is in contact with the floor surface 43 of the casing 24a and is slidable without generating a gap. This prevents a large level difference from occurring. Therefore, there is no risk of obstructing the passage of passers-by such as elderly people, physically handicapped persons and wheelchairs during passage, and smooth and safe passage is possible.
[0023]
FIG. 3 is an enlarged cross-sectional view for explaining an attachment state of the second movable support means 30 to the other casing 24b. The guide member 29 has a first guide groove 44 having a concave opening section into which the second movable support means 30 is fitted, and a first guide groove section 44 that is continuous with the first guide groove section 44, and a substantially open C section. The second guide groove portion 45 and a mounting portion 46 connected to the second guide groove portion 45 and bent upward and projecting. Such a guide member 29 is realized by an extruded shape made of an aluminum alloy. The second movable support means 30 is realized by a ball caster similar to the first movable support means 27a, 27b.
[0024]
A liner plate 49 and a bracket 50 are fixed to the opposing wall surface 28 b by anchor bolts 47 and nuts 48. The bracket 50 is made of a steel member having an L-shaped cross section, and a vertical adjustment long hole 51 through which the anchor bolt 47 is inserted with an interval in the longitudinal direction thereof, and a bolt for fixing the guide member 29. A left and right adjustment long hole 52 through which 53 is inserted is formed.
[0025]
The head of the bolt 53 is fitted in the second guide groove 45 of the guide member 29 so as to be movable in the longitudinal direction perpendicular to the paper surface of FIG. 3, and the mounting position of the guide member 29 on the bracket 50 in the front-rear direction B is adjusted. can do. Further, the positioning of the guide member 29 in the left-right direction A can be performed by the left-right adjustment long hole 52, and a nut 54 is screwed into the bolt 53 inserted through the left-right adjustment long hole 52. The guide member 29 is fixed at the optimal position.
[0026]
Further, since the bracket 50 is movable along the vertical adjustment long hole 51, the cover body 25 is positioned on the other casing at the position in the vertical direction C of the guide member 29 fixed to the bracket 50 as described above. It can be adjusted to be flush with the floor surface 54 of 24b.
[0027]
A support piece 55 having a substantially T-shaped cross section is fixed to the mounting portion 46 of the guide member 29 by screws 56. The support piece 55 is moved in the vertical direction C with respect to the mounting portion 46 to adjust the height, and is set to an optimum position such that the tip of the parting member 31 is in contact with the floor surface 54, and the parting member 31 is positioned. Can be installed. Since the parting member 31 is detachably attached to the support piece 55 by screws 56, the cover body 25 can be easily attached and detached together with the other parting member 32 with the parting member 31 removed. In addition, since the parting member 31 blocks the end of the cover body 25 on the other housing 24b side and the floor surface 54, no gap is generated between the cover body 25 and the other housing 24b. In addition, the interference between the cover main body 25 and the other casing 24b is reliably eliminated, and damage to the cover main body 25 is prevented.
[0028]
As described above, with respect to one housing 24a, a recess 26 is provided, and a plurality of first movable support means 27a, 27b are provided at intervals in the left-right direction A and the front-rear direction B, whereby the floor surface 33 of the cover body 25 is formed. The amount of protrusion can be reduced as much as possible. For the other housing 24 b, a guide member 29 is provided by fixing the bracket 50 to the opposite wall surface 28 b, and the vertical and horizontal positions are adjusted by the bracket 50, so that the cover body 25 is positioned relative to the floor surface 54. Can be positioned and arranged so that they are substantially flush with each other, thus reducing the amount of protrusion of the cover body 25 from the floor surfaces 33 and 54, reducing the occurrence of steps that obstruct traffic, It is possible to achieve safe traffic.
[0029]
FIG. 4 is a vertical cross-sectional view showing a floor expansion joint device 21a according to another embodiment of the present invention, and FIG. 5 is an enlarged cross-sectional view taken along the cutting plane line V-V in FIG. Note that the same reference numerals are given to the portions corresponding to the above-described embodiment. In the floor expansion joint device 21a of the present embodiment, a flat surface plate 62 is fixed on a plurality of holders 61 provided at intervals in the front-rear direction B perpendicular to the paper surface of FIG. The cover body 25 is fixed by a fixed cover body 63 fixed to the floor surface 33 of one housing 24a.
[0030]
An auxiliary support member 65 connected to the cover body 25 by a wire 64 is interposed between the fixed cover body 63 and the base material 66 of the concave portion 26, so that bending of the fixed cover body 63 due to loading is prevented. Yes. The wire 64 is an intermediate portion in the left-right direction A between the end of the cover main body 25 and the end of the base material 66 laid on the upper surface of the recess 26 in the initial state in which the floor expansion joint device 21a is installed. When the buildings 23a and 23b are displaced in directions away from each other, the wire 64 moves on the base material 66 following the cover body 25 when the buildings 23a and 23b are displaced away from each other. Configured to be able to. The base material 66 has a plurality of profiles 67 and a flat sliding plate 68 that is horizontally fixed to the top of the profiles 67 by welding or the like.
[0031]
Each holder 61 is realized by an inverted U-shaped member whose cross section is opened downward, and first movable support means 27a and 27b having the same configuration as that of the above-described embodiment are provided in the holder 61. It is done. The spherical rollers of the respective first movable support means 27a and 27b are in contact with the lower surface of the fixed cover body 63 from below and can move smoothly.
[0032]
In each of the embodiments shown in FIGS. 1 to 5 described above, the first and second movable support means 27a, 27b; 30 are realized by a ball caster including a spherical roller. In the embodiment, as a configuration other than the ball caster, for example, instead of the spherical roller, a plastic sliding plate having a good sliding property is provided at a plurality of positions at a position where the bending is minimized, and the lower surface of the cover main body 25 is provided. The cover body 25 may be configured to be in direct surface contact and slidably supported. Even when such a configuration is used, as with the case of using the ball caster of the above-described embodiment, the cover body 25 can be supported with a slight sliding resistance, and the sliding plate Therefore, the depth of the concave portion 26 from the floor surface is smaller than that of the ball caster, and the effective height (or thickness) at the portion where the concave portion 26 is formed in the housing 24a can be reduced. The labor of processing such as fishing is reduced.
[0033]
【The invention's effect】
According to the first aspect of the present invention, a recess is formed in one housing, a plurality of first movable support means are provided in the recess to support the cover body, and a guide member is provided on the opposing wall surface of the other housing. Since the cover body is supported by the second movable support means, the amount of protrusion of the cover body from the floor surface of each housing can be reduced as much as possible to pass smoothly and safely. become able to.
[0034]
In addition, since the parting member is provided in the guide member so that the displacement can be adjusted in the vertical direction, the adjustment in the vertical direction of the parting member can be adjusted so that the space between the cover body and the floor surface is reliably closed. As a result, it is possible to prevent the generation of a step and to realize smooth and safe traffic. Moreover, by removing the parting member, the cover body can be easily replaced, and the cover body can be easily attached and removed when the cover body is damaged.
[0035]
According to the second aspect of the present invention, the cover body is supported by the plurality of first movable support means in the concave portion of the one housing, and the fixed cover body is provided on the cover body so as to cover from above. Therefore, the cover body is arranged below the floor surface, thereby preventing the cover body from protruding from the floor surface, reducing the level difference between the floor surface and the fixed cover body, Smoothness can be improved. Further, since the auxiliary support member is interposed between the fixed cover body and the concave portion, the fixed cover body is bent by a load during passage, and a problem that the displacement of the cover main body is hindered by the bending is prevented. In addition, since the auxiliary support member is connected to the cover body, the auxiliary support member follows the cover body even if each casing is relatively displaced, and the fixed cover body is always at a position away from the cover body. Accordingly, the fixed cover body can be prevented from being bent regardless of the displacement of each building, and the cover main body can always be smoothly moved.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view showing a floor expansion joint device 21 according to an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view for explaining an attachment state of the first movable support means 27a, 27b to one housing 24a.
FIG. 3 is an enlarged cross-sectional view for explaining an attachment state of the second movable support means 30 to the other housing 24b.
FIG. 4 is a vertical sectional view showing a floor expansion joint device 21a according to another embodiment of the present invention.
5 is an enlarged cross-sectional view seen from a cutting plane line VV in FIG. 4. FIG.
FIG. 6 is a vertical sectional view showing a typical conventional expansion joint device 1 for a floor.
[Explanation of symbols]
21, 21a Expansion joint device for floor 22 Gap 23a, 23b Building 24a, 24b Housing 25 Cover body 26 Recess 27a, 27b First movable support means 28a, 28b Opposing wall surface 29 Guide member 30 Second movable support means 31, 32 Parting member 33, 54 Floor surfaces 38, 41, 66 Base material 50 Bracket 55 Support piece 63 Fixed cover body 64 Wire 65 Auxiliary support member

Claims (2)

A state in which relative displacement in the front-rear direction perpendicular to the left-right direction on the horizontal direction and the horizontal direction of each building on the horizontal plane that is close to and away from each other is allowed between the two adjacent building bodies with a gap. The cover body that closes the gap is provided in substantially the same plane as the floor surface of each housing,
One housing is formed with a recess, and a plurality of first movable support means for supporting the cover body movably in the left-right direction and the front-rear direction are provided in the recess at intervals in the left-right direction and the front-rear direction. ,
A guide member extending in the front-rear direction is provided on the opposite wall surface facing the one case of the other case so that the displacement can be adjusted in the up-down direction and the left-right direction,
A second movable support means supported by the guide member so as to be movable in the front-rear direction is provided at the end on the other housing side of the cover body,
A floor expansion joint device, wherein a parting member is provided on at least one of the left and right ends of the cover body. A state in which relative displacement in the front-rear direction perpendicular to the left-right direction on the horizontal direction and the horizontal direction of each building on the horizontal plane that is close to and away from each other is allowed between the two adjacent building bodies with a gap. The cover body that closes the gap is provided in substantially the same plane as the floor surface of each housing,
A guide member extending in the front-rear direction is provided on the opposite wall surface facing the one case of the other case so that the displacement can be adjusted in the up-down direction and the left-right direction,
The cover body is movably supported in the front-rear direction and the left-right direction by a plurality of first movable support means provided in a recess formed on one housing with a space in the left-right direction and the front-rear direction, The second movable support means guided by the guide member is supported so as to be movable in the front-rear direction.
One housing is provided with a fixed cover body that covers a region disposed on one housing of the cover body from above,
An expansion joint device for floors, wherein an auxiliary support member is interposed between the fixed cover body and the recess.

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