JP3756990B2 - Expansion joint device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an expansion joint device that allows a relative displacement between two buildings and closes a gap between the buildings.
[0002]
[Prior art]
FIG. 4 is a horizontal cross-sectional view showing a typical prior art expansion joint device 1. The expansion joint device 1 includes a movable panel 6 extending along the outer wall surfaces 5a, 5b facing the exterior 4 of the concrete structures 3a, 3b of two adjacent buildings with a gap 2 therebetween. It is provided over 3b. One end portion 7a of the movable panel 6 is supported by being seated from the outside 4 side on a seating portion 10 of a bracket 9 fixed to an opposing wall surface 8a facing the other housing 3b of the one housing 3a. The other end portion 7b of the movable panel 6 is connected to the other housing 3b by a hinge 11 so as to be rotatable in rotation directions D1 and D2. A water stop plate mounting bracket 21a is fixed to the rear surface of the bracket 9 facing the inside of the gap (downward in FIG. 4) in the depth direction when the bracket 9 is viewed from the outside 4 side.
[0003]
The hinge 11 is fixed to the edge member 12 by welding, for example, and this edge member 12 is fixed to the opposing wall surface 8b of the other housing 3b together with the spring locking piece 13 and the water stop plate mounting bracket 21b by anchor bolts (not shown). . The width direction both ends of the flexible water stop plate 22 made of rubber are fixed to the water stop plate mounting brackets 21a and 21b, respectively. Another spring locking piece 14 is fixed to the back surface of the movable panel 6 by, for example, screws or welding, and one end of a tension spring 15 is locked to the spring locking piece 13 on the other side of the housing 3b. The other end of the tension spring 15 is locked to the spring locking piece 14 on the panel 6 side. By such a tension spring 15, the movable panel 6 is spring-biased in the rotational direction D 2 in which one end portion 7 a thereof approaches the other housing 3 b through the bracket 9 from the outside 4 side.
[0004]
The free end portion 16 near one housing 3a in the one end portion 7a of the movable panel 6 is inclined in a direction away from the hinge 11 in a rotation direction D1 opposite to the rotation direction D2 by the tension spring 15. A panel inclined surface 17 is formed. The seating portion 10 of the bracket 9 is formed substantially parallel to the outer wall surfaces 5a and 5b of the housings 3a and 3b. The bracket 9 has a first inclined surface 18 on the side of the housing 3a from the seating portion 10. A second inclined surface 19 is formed on the other side of the housing 3b from the seating portion 10. The first and second inclined surfaces 18 and 19 are formed so as to be inclined toward the outside 4 from the other housing 3 b in a direction approaching the one housing 3 a.
[0005]
[Problems to be solved by the invention]
In such an expansion joint device 1, as indicated by phantom lines P1, P2, P3, and P4 in FIG. 4, the housings 3a and 3b are relatively separated from each other due to a sudden earthquake or uneven settlement of the ground. (P1), approaching (P2), and the relative positional relationship between the respective housings 3a and 3b changes to the state (P3, P4) displaced in the front-rear direction which is the vertical direction in FIG.
[0006]
A locus L1 having a radius R1 when the distal end portion 23 of the free end portion 16 of the movable panel 6 rotates about the hinge 11 and the hinge 11 passing through the distal end portion 25 of the bracket 9 near the other housing 3b. In relation to the locus L2 having the radius R2 as the center, the respective casings 3a and 3b are relatively separated from each other, and the locus L2 of the distal end portion 25 of the bracket 9 is more radial than the locus L1 of the distal end portion 23 of the movable panel 6. When moved outward, that is, as shown by the locus L3, when the bracket 9 is retracted as indicated by the imaginary line P1, and further displaced in the front-rear direction as indicated by the imaginary lines P3 and P4, the movable panel The tip portion 23 of 6 does not contact the bracket 9. Therefore, the movable panel 6 is not supported by the bracket 9, but is angularly displaced inward by the tension spring 15 as indicated by the direction of the arrow D2, and the front end portion 23 comes into contact with the water stop plate 22 and the like, as shown by the solid line in FIG. As shown, the one end portion 7 a of the movable panel 6 cannot be returned to the seating portion 10 of the bracket 9.
[0007]
Further, as described above, in a state where the locus L2 of the distal end portion 25 of the bracket 9 is arranged in the region indicated by the locus L3 moved radially outward from the locus L1 of the distal end portion 23 of the movable panel 6, the movable panel 6 is disposed. If the distal end portion 23 of the metal plate is caught by the water stop plate mounting bracket 21a or the like, and the housings 3a and 3b are displaced in directions close to each other in this state, the movable panel 6 and the hinge 11 are crushed and deformed. Or the water stop plate 22 is damaged by the movable panel 6.
[0008]
Accordingly, the object of the present invention is to limit the angular displacement of the movable panel into the gap inward even if the respective housings are separated from each other, thereby preventing damage to various members such as the movable panel and the hinge. It is an object of the present invention to provide an expansion joint device that can be smoothly returned onto a bracket.
[0009]
[Means for Solving the Problems]
The present invention provides a seating portion for supporting one end portion of a movable panel disposed along the outer wall surface of each housing across each housing, on one of the housings of two buildings adjacent to each other with a space between each other, A bracket having an inclined portion inclined in a direction approaching the one housing from the other housing toward the
The other end of the movable panel is pivotally connected to the other housing by a hinge,
A spring locking piece is fixed to the other casing on which the hinge is provided, and a tension spring is provided between the spring locking piece and the back surface of the movable panel. The tension spring allows the movable panel to rotate the hinge. As a moving center, one end of the movable panel can be rotated in the direction of moving inward of the gap from the outside of the housing through the bracket,
An expansion joint device comprising a wire rope and provided with a tension member that is stretched between the bracket and the spring locking piece on the inner side of the tension coil spring with respect to the movable panel. It is.
[0010]
According to the present invention, each housing of two buildings realized as a seismic isolation structure is arranged adjacent to each other with a gap between them, a bracket is fixed to one housing, and the other housing is movable. The panels are pivotally connected by hinges. The movable panel is disposed along the outer wall surface of each housing between the housings, and one end portion on the other housing side is seated on and supported by the seating portion of the bracket. A spring locking piece is also fixed to the other housing, and a tension spring is locked to the spring locking piece. By such a tension spring, the movable panel can be rotated by being urged by a spring toward a direction in which one end of the movable panel approaches the other casing through the bracket from the outside, that is, inward of the gap. When each frame is displaced in a direction close to each other due to a sudden earthquake or uneven settlement of the ground, one end of the movable panel is pushed up to the outside by the inclined portion of the bracket from the state where it is seated on the seat of the bracket, One end of the movable panel rotates to the outside without contacting the bracket, and the movable panel and the hinge are prevented from being deformed by being pressed by the relative proximity displacement of each housing. The gap can be closed by allowing displacement in directions close to each other.
Further, when the respective housings are displaced in the directions away from each other, they are spring-biased inward by the spring force of the tension spring of the movable panel, so that the tip of the movable panel is guided by the inclined portion of the bracket while being in the gap. It is possible to displace the housings in directions away from each other. At this time, one end of the movable panel is prevented from being angularly displaced inward of the gap by a tension member that is stretchably stretched from a position inside the inclined portion of the bracket to a predetermined position of the other casing. Thus, the movable panel is prevented from rotating one end of the movable panel to the inside of the gap rather than the bracket, so that the movable panel can be restored, that is, as described in relation to the prior art, Occurrence of a problem that the rotation to the outside in the direction opposite to the rotation direction is impossible and cannot be restored is prevented.
In such a state, even if each housing is displaced in a relatively close direction, one end portion of the movable panel is guided by the inclined portion of the bracket and is in a direction opposite to the rotation direction into the gap, that is, One end of the movable panel can be returned from the inside to the direction of angular displacement to the outside through the bracket. In this way, even if each housing is once separated and then approached again, it keeps the gap closed without deforming the movable panel and hinges, etc., and blocks the entry of wind and rain from outside into the gap Can be maintained.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a horizontal sectional view showing an expansion joint device 41 according to an embodiment of the present invention. The expansion joint device 41 is perpendicular to the paper surface of FIG. 1 on one wall body 43a among the wall bodies 43a and 43b, which are concrete structures of two seismic isolation structures that are adjacent to each other with a gap 42 therebetween. A bracket 49 extending in the vertical direction is fixed, and the bracket 49 is arranged along the outer wall surfaces 45a and 45b facing the outdoor 44 which is outside the wall bodies 43a and 43b across the wall bodies 43a and 43b. It has a flat seat 48 that supports one end 47 a of the movable panel 46, and an inclined portion 72 that inclines toward the outdoor 44 from the other wall 43 b toward the one wall 43 a. As will be described later, an inner wall frame 54a, 54b made of a plurality of steel materials and an inner wall frame 54a, 54b are mounted on the inner 53 side of each wall body 43a, 43b from the indoor 53 side. Interior plates 55a and 55b realized by the material are provided. Each wall body 43a, 43b and each inner wall frame 54a, 54b are connected by a frame member 64 at each end facing the gap 42, and the bracket 49 is fixed to the frame member 64.
[0012]
The other end 47b of the movable panel 46 is rotatably connected to the other wall 43b by a hinge 50, and a spring locking piece 51 is fixed to the other wall 43b provided with the hinge 50. One end of the tension coil spring 52 is locked with the spring locking piece 51 as a predetermined position of the other casing. The other end of the tension coil spring 52 is locked to a spring locking piece 97 fixed to the movable panel 46 on the back surface near the other end 47b. Such a tension coil spring 52 is made of stainless steel, and one end portion 47a of the movable panel 46 is brought close to the other wall body 43b from the outdoor 44 side through the bracket 49 with the hinge 50 as a rotation center. The spring is biased in the rotating direction D10.
[0013]
The wall bodies 43a and 43b are concrete outer walls. Inner wall frames 54a and 54b are provided on the indoor 53 side of the wall bodies 43a and 43b, and further on the indoor 53 side of the inner wall frames 54a and 54b. Interior plates 55a and 55b are provided. The inner wall frames 54a and 54b are integrally fixed to the wall bodies 43a and 43b, respectively. The inner wall frames 54a and 54b have a movable panel 57 having a configuration similar to that of the outdoor side movable panel 46, A hinge 60, a spring locking piece 61, and a tension coil spring 62 are provided for rotatably connecting the movable panel 57 of the bracket 59 having the seating portion 58 of the movable panel 57 to the inner wall frame 54b, and thus the wall body 43b. . The tension coil springs 52 and 62 and the spring locking pieces 51 and 97 are provided at predetermined intervals in the vertical direction. The tension coil springs 52 and 62 are each provided with a flexible tube 52a made of synthetic resin. 62a are extrapolated to prevent damage due to contact with the water stop plate 77.
[0014]
The movable panels 46 and 57 are respectively fixed to the back surfaces of cover plates 93 and 94 made of aluminum alloy with holders 95 and 96 made of, for example, grooved steel, spaced perpendicular to the paper surface of FIG. Are provided with spring locking pieces 97 and 98 for locking the other end portions of the tension coil springs 52 and 62.
[0015]
On one wall body 43a and inner wall frame 54a, a bracket frame 110 in which two frame members 64, 65 realized by L-shaped steel are connected in a T shape by welding is a gap 42 perpendicular to the paper surface of FIG. Are provided at intervals in the up-down direction. At both ends in the longitudinal direction (vertical direction in FIG. 1) of one frame member 64, attachment members 66 and 67 made of L-shaped steel are fixed by welding. The attachment members 66 and 67 are long materials extending in the extending direction perpendicular to the paper surface of FIG. 1, and the brackets 49 and 59 are fixed by screws 68 and 69, respectively.
[0016]
Each bracket 49, 59 is made of an aluminum alloy and is a long material extending in the up-down direction. The first inclined portions 70, 71 are formed on one wall body 43a and the inner wall frame 54a side, respectively. Second inclined portions 72 and 73 are formed on the side of the wall body 43b and the inner wall frame 54b, respectively. Each of the first and second inclined portions 70, 71; 72, 73 is in a direction away from the other wall body 43b and the inner wall frame 54b toward the outdoor 44 and the indoor 53 which are outside, in other words, from the outside. Direction toward the wall 44a and the inner wall frame 54a, which are one housing to which the brackets 49, 59 are attached, from the wall body 43b and the inner wall frame 54b, which are the other housings (see FIG. 1). The bent portions 74 and 75 that are inclined to the left of the frame member 65 are respectively attached to the mounting member 76 welded to the distal end portion of the frame member 65, and the housing 43a of the water stop plate 77 and the inner wall frame 54a. Along with the one end portion on the side, it is fixed by a screw 78 and covered with a sealing material 79 in a watertight manner. The other wall 43b of the water stop plate 77 and the other end of the inner wall frame 54b are fixed to the water stop plate fitting 21 fixed to the other wall 43b by screws 82.
[0017]
The movable panel 46 on the outdoor 44 side is provided with a tension member 85 that is elastically stretched over the spring locking piece 51 from the bracket 49 on the indoor 53 side of the tension coil spring 52. The movable panel 57 on the indoor 53 side is provided with a tension member 86 that is elastically stretchable over the spring locking piece 61 from the bracket 59 on the indoor 53 side. The water stop plate 77 is provided between the tension members 85 and 86. The tension members 85 and 86 are fed / taken to the winding units 87 and 88 disposed on the side of the one wall body 43a and the inner wall frame 54a with respect to the second inclined portions 72 and 73 of the brackets 49 and 59, respectively. It is wound as possible and is always kept in a state of elastic tension.
[0018]
The winding units 87 and 88 are fixed to reinforcing members 89 and 90 provided in the brackets 49 and 59, respectively. The reinforcing member 89 on the outdoor 44 side is also provided with a tension unit 91 that elastically tensions the movable panel 46 from the indoor 53 side. The tension unit 91 has the same configuration as the winding units 87 and 88, and one end portion of the movable panel 46 is locked to one end portion 47 a of the movable panel 46 by a tension member 92.
[0019]
In this way, the two movable panels 46 and 57 allow the wall 42a and 43b, the inner wall frames 54a and 54b, and the interior plates 55a and 55b to be displaced in the direction in which they are relatively close to / separated from each other, thereby forming the gap 42. It can be kept closed. Accordingly, it is possible to prevent wind and rain from entering the space 42 from the outdoor 44 side, and various members in the space 42 from the indoor 53 side to be exposed to the indoor 53 side to prevent the appearance of the design from being impaired. It is.
[0020]
FIG. 2 is a cross-sectional view in which a part of the configuration of the winding unit 87 is cut away. The take-up unit 87 is provided with a take-up reel 102 rotatably supported around a rotation axis in a hollow box-shaped casing 101, and a return spring realized by a spring spring in the take-up reel 102. 103 is stored. One end portion on the center side of the return spring 103 is locked to a shaft 104 erected on the casing 101, and the other end portion on the outermost peripheral side of the return spring 103 is locked to the inner peripheral surface of the take-up reel 102, A length equal to or greater than the variation length between the predetermined wall bodies 43a and 43b and the inner wall frames 54a and 54b is wound. The take-up reel 102 spring-biases the take-up reel 102 in the take-up direction C by the return spring 103, and is wound around the take-up reel 102 and inserted through a through hole 111 formed on one side wall of the casing 101. Then, the tension member 85 extending outward from the casing 101 can be wound by a spring force and kept in a resiliently stretched state. The tension member 85 is realized by a wire rope having a diameter of 1 to 2 mm made of stainless steel, for example. The other winding unit 88 and the tension unit 91 are also configured similarly to the winding unit 87.
[0021]
FIG. 3 is a simplified horizontal cross-sectional view for explaining the operation of the expansion joint device 41. In the above-described expansion joint device 41, as indicated by virtual lines P11, P12, P13, and P14 in FIG. 3, the wall bodies 43a and 43b and the inner wall frames 54a and 54b are caused by a sudden earthquake or uneven ground subsidence, respectively. Are relatively separated from each other (P11), relatively close to each other (P12), and spaced from each other in the front-rear direction (P13, P14) in FIG. 3, the wall bodies 43a, 43b and the inner wall frames. When the positional relationship between 54a and 54b is changed, the tension members 85 and 86 are wound by the winding units 87 and 88 at the position P12 close to each other, and are not attached to other members without loosening. In addition, the movable panels 46 and 57 are guided to the outdoor 44 and indoor 53 sides by the first inclined portions 70 and 71, respectively, so that they do not contact the brackets 49 and 59. It is to permit displacement of the side close to the other wall 43b and the inner wall frame 54b of each bracket 49 and 59.
[0022]
When separated as indicated by the position P11, the tension members 85 and 86 are fed out from the winding units 87 and 88 in a direction away from the other wall body 43b and the inner wall frame 54b of the brackets 49 and 59, respectively. Can be tolerated. At this time, the movable panel 46 on the outdoor 44 side is spring-biased by the tension coil spring 52 and the tension means 91, and the movable panel 57 on the indoor 53 side is spring-biased by the tension coil spring 62. Is angularly displaced in the direction of the adjacent arrows D10 and D12. At this time, the one end portions 47a and 63a of the movable panels 46 and 57 are locked by the tension members 85 and 86, and angular displacement in the directions of the arrows D10 and D12 is prevented. Therefore, the front end portions 105 and 106 of the movable panels 46 and 57 face the second inclined portions 72 and 73 of the brackets 49 and 59, respectively, and then the wall bodies 43a and 43b and the inner wall frames 54a and 54b are relatively moved. Even if displaced in the approaching direction, the tip portions 105 and 106 of the movable panels 46 and 57 are guided to the outdoor 44 and indoor 53 sides by the second inclined portions 72 and 73, respectively.
[0023]
Even if the wall bodies 43a and 43b and the inner wall frames 54a and 54b are once separated from each other in this manner and then approach again, the movable panels 46 and 57 are pressed and deformed by the brackets 49 and 59, and these movable bodies are movable. It is possible to prevent the hinges 50 and 60 and the edge members 107 and 108 provided in association with the panels 46 and 57 from being damaged.
[0024]
Thus, the brackets 49 and 59 are displaced in the front-rear direction as indicated by the positions P13 and P14 in a state where the brackets 49 and 59 are retracted from the front end portions 105 and 106 of the movable panels 46 and 57, respectively. Even so, the movable panels 46 and 57 are limited in angular displacement in the direction of the arrow D10 and the arrow D12 by the respective stretching members 85 and 86, and the tip portions 105 and 106 face the second inclined portions 72 and 73, respectively. Can be maintained. Therefore, even if the wall bodies 43a and 43b and the inner wall frames 54a and 54b are displaced in directions close to each other, the movable panels 46 and 57 are not damaged, and the wall bodies are always closed. It becomes possible to allow relative displacement between 43a, 43b and the respective inner wall frames 54a, 54b.
[0025]
As another embodiment of the present invention, instead of the tension members 85 and 86 and the winding units 87 and 88, a tension spring, a damper, or a plurality of cylindrical rods having different diameters can be expanded and contracted. It is also possible to use so-called multistage rod tension members that are connected to each other, and whose both longitudinal ends are rotatably connected to the inside of the bracket and to predetermined positions of the other housing, respectively.
[0026]
In the above-described embodiment, the inner wall frames 54a and 54b and the interior plates 55a and 55b are structurally integrated with the wall bodies 43a and 43b, which are housings. May be provided as a building frame, and the movable panel may be provided only in one of the outdoors and indoors, and the present invention can be carried out according to various structural forms of the building.
[0027]
【The invention's effect】
According to the present invention, since the tension member is stretchably stretched from the inside of the bracket to a predetermined position of the other housing, the bracket is displaced in a direction away from the hinge beyond the turning radius of the tip of the movable panel. However, it is possible to prevent the movable panel from coming off the inclined part of the bracket and angularly moving inward into the gap by the tension member, and keep the tip of the movable panel facing the inclined part of the bracket. can do. This prevents the movable panel, hinges and related members from being damaged even if the respective housings are displaced in the approaching direction after being relatively separated from each other. Therefore, it is possible to keep the gap closed by the movable panel.
[Brief description of the drawings]
FIG. 1 is a horizontal sectional view showing an expansion joint device 41 according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view with a part cut away showing a specific configuration of the winding means 87;
FIG. 3 is a simplified horizontal sectional view for explaining the operation of the expansion joint device 41 shown in FIG. 1;
4 is a horizontal cross-sectional view of a typical prior art expansion joint device 1. FIG.
[Explanation of symbols]
41 Expansion joint device 42 Gap 43a, 43b Wall body 44 Outdoor 45a, 45b Outer wall surface 46, 57 Movable panel 47a One end portion 47b Other end portion 48 Seating portion 49, 59 Bracket 50, 60 Hinge 51, 61 Spring locking piece 52, 62 Extension coil springs 70 and 71 First guide portions 72 and 73 Second guide portions 85 and 86 Tension members 87 and 88 Winding unit

Claims (1)

A seating part that supports one end of a movable panel arranged along the outer wall surface of each chassis across each chassis, and one of the two buildings adjacent to each other with a space between them, and the other toward the outside Fixing a bracket having an inclined portion inclined in a direction approaching one of the housings from the housing;
The other end of the movable panel is pivotally connected to the other housing by a hinge,
A spring locking piece is fixed to the other casing on which the hinge is provided, and a tension spring is provided between the spring locking piece and the back surface of the movable panel. The tension spring allows the movable panel to rotate the hinge. As a moving center, one end of the movable panel can be rotated in the direction of moving inward of the gap from the outside of the housing through the bracket,
An expansion joint device comprising a wire rope and provided with a tension member that is stretched between the bracket and the spring locking piece on the inner side of the tension coil spring with respect to the movable panel. .

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