JP2009127272A - Handrail type expansion joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handrail type expansion joint which accommodates relative movement between a joint plate and a connecting passage and between the joint plate and an outside passage, ensures relative movement between an L-shaped handrail unit and a sidewall of the connecting passage, close to a joint portion, and between the handrail unit and an external wall in which a connecting passage opening is formed, even if the handrail unit is deformed, to thereby enhance the reliability of relative displacement accommodation of buildings in first and second directions. <P>SOLUTION: According to the structure of the handrail type expansion joint, the joint plate 38 tying both the buildings 31, 32 via the joint portion 33 has one end thereof supported by a floor surface 41 of the connecting passage 37 via a plurality of slide bars 40, and the other end thereof supported by a slide rail receiver 46 via a slide rail 45. One sides 54 of the pairing L-shaped handrail units 39 are erected on both lateral ends of the joint plate 38, and the other sides 55 are erected on the slide rail 45 to tie the buildings 31, 32 to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a handrail-type expansion joint that covers a joint between adjacent buildings so that the relative displacement of each building can be absorbed.

  16 to 22 show a conventional joint device (handrail-type expansion joint) 21 for a transition passage, and this handrail-type expansion joint 21 is described in Patent Document 1, for example.

  The handrail-type expansion joint 21 is connected to the other passageway opening 1 formed in the outer wall 4 of the outer passage 3 of one building 2 and the other passageway so as to communicate with the passageway opening 1 and the joint portion 6. One end of the crossing passage 5 can be slid in the front-rear direction on the crossing passage 5 provided so as to protrude from the building 7 toward the one building 2 and the joint portion side end of the crossing passage 5. And a joint plate 12 attached to the recess (floor surface) 10 of the transition passage opening 1 so as to be slidable in the left-right direction, and one end portion on the side wall 16 of the joint passage 5 on the joint portion side. And a pair of slide side walls 15 attached to the outer wall 4 in which the other end portion is formed with the cross-passage opening 1 so as to be slidable in the left-right direction.

  When the handrail type expansion joint 21 having the above-described structure is relatively displaced in a direction in which one building 2 and the other building 7 are close to each other due to an earthquake, and the joint portion 6 becomes narrow, as shown in FIG. The crossing passage 5 slides in the front-rear direction to absorb the relative displacement in the direction in which the buildings 2 and 7 are close to each other, and the crossing passage side of the pair of slide side walls 15 is also connected to the side wall 16 of the crossing passage 5 in the front-rear direction. To move relative to each other in the direction in which the buildings 2 and 7 approach each other. In addition, when the one building 2 and the other building 7 are relatively displaced in a direction away from each other due to the earthquake and the joint portion 6 becomes wide, the joint plate 12 and the crossing passage 5 slide and move in the front-rear direction, While absorbing the relative displacement in the direction in which the buildings 2 and 7 are separated from each other, the crossing passage 5 side of the pair of slide side walls 15 is also slid in the front-rear direction with the side wall 16 of the crossing passage 5 to separate the buildings 2 and 7. Absorbs relative displacement in the direction of

  On the other hand, when one building 2 and the other building 7 are relatively displaced in the left-right direction due to the earthquake, as shown in FIG. 24, the outer wall 4 and the joint plate 12 of the external passage 3 of one building 2 are moved in the left-right direction. The sliding movement absorbs the relative displacement of the buildings 2 and 7 in the left-right direction, and the external passage 3 side of the pair of slide side walls 15 slides in the left-right direction with the outer wall 4 to Absorbs relative displacement in the direction.

Japanese Patent No. 2906374.

  By the way, in the handrail-type expansion joint 21 described in Patent Document 1, a plurality of guide rails 9 extending in the front-rear direction are fixed on the concave portion (floor surface) 8 at the joint portion side end portion of the transfer passage 5, and the joint plate A first roller rolling system in which a plurality of rollers 13 attached to the back surface of one end of the roller 12 roll on each guide rail 9, and a roller 18 attached to the inner wall surface of the slide side wall body 17 in each slide side wall 15. 16 is configured to absorb relative displacement in a direction in which one building 2 and the other building 7 approach and separate from each other by a combined structure with the second roller rolling method that rolls on the upper surface of 16. A plurality of guide rails 11 extending in the left-right direction are fixed to a concave portion (floor surface) 10 on the joint portion 6 side where the opening portion 1 is formed, and attached to the back surface of the other end portion of the joint plate 12. A third roller rolling method for rolling the roller 14 on the guide rail 11 and a fourth roller rolling method for rolling the roller 18 attached to the inner wall surface of the slide side wall body 17 in each slide side wall 15 on the upper surface of the outer wall 4. It is configured to absorb the relative displacement in the left-right direction of one building 2 and the other building 7 by a composite structure with a moving system.

  Thus, in the structure which absorbs the relative displacement in the direction in which one building 2 and the other building 7 approach and separate from each other and the left and right directions by the first to fourth roller rolling methods, a load is applied to the joint plate 12. The applied load acts on the plurality of rollers 13 and 14 in a concentrated manner, and the load cannot be distributed over a wide range. Therefore, a large stress is generated in each of the rollers 13 and 14, and the initial mounting state of each of the rollers 13 and 14 on the joint plate 12 may be impaired.

  If the initial mounting state of the rollers 13 and 14 with respect to the joint plate 12 is impaired, smooth rolling of the rollers 13 on the guide rails 9 and smooth rolling of the rollers 14 on the guide rails 11 are hindered. Then, when an earthquake next occurs, smooth relative movement in the front-rear direction between the joint plate 12 and the crossing passage 5 and smooth relative movement in the left-right direction between the joint plate 12 and the external passage 3 may not be possible. There is a problem that the reliability of absorption of relative displacement in the front-rear direction and the left-right direction of one building 2 and the other building 7 is low.

  In addition, the handrail-type expansion joint 21 described in Patent Document 1 is connected to the lower end portion of the outer wall 4 at both end portions where the transition passage opening 1 is formed, as shown in FIGS. A joint plate insertion groove 22 that faces the floor surface of the passage 3 is formed, the other end portion of the joint plate 12A is slidably supported on the floor surface of the outer passage 3, and both left and right end portions of the joint plate 12A are connected to each joint. There is a structure in which the plate insertion groove 22 is slidably fitted, and one end portion of the joint plate 12A is fixed to the floor surface of the passage 5 with a plurality of screws 20.

  According to such a handrail-type expansion joint 21, the load applied to the joint plate 12A can be dispersed over a wide range as compared with the first to fourth roller rolling methods. However, since the other end portion of the joint plate 12A is slidably supported on the floor surface of the external passage 3 in a free and unconstrained state, there is a possibility that the waviness deformation in the left-right direction may occur over time. .

  When waviness deformation in the left-right direction occurs at the other end portion of the joint plate 12A, the other end portion of the wavy deformed joint plate 12A interferes with each joint plate insertion groove 22, and the next time the earthquake occurs, There may be a case where smooth relative movement in the front-rear direction and smooth relative movement in the left-right direction between the plate 12A and the external passage 3 cannot be performed. There is a problem of low reliability for absorption.

  On the other hand, the pair of slide side walls 15 in the handrail-type expansion joint 21 described in Patent Document 1 is attached to the side wall 16 on the joint portion side of the crossing passage 5 so as to be slidable in the front-rear direction, and the other end portion. Is attached to the outer wall 4 in which the cross-passage opening 1 is formed so as to be slidable in the left-right direction, so that an excessive force not assumed at the time of design acts and each slide side wall 15 is plastically deformed or damaged. Then, smooth sliding movement in the front-rear direction between the side wall 16 on the joint portion side of the transition passage 5 and each slide side wall 15 and smooth movement in the left-right direction between the outer wall 4 and the respective slide side walls 15 forming the transition passage opening 1 are performed. When the slide movement is hindered and the next occurrence of an earthquake, smooth relative movement in the front-rear direction between each slide side wall 15 and the side wall 16 on the joint portion side of the passage 5 and each In some cases, smooth relative movement between the ride side wall 15 and the outer wall 4 formed with the crossing passage opening 1 may not be possible, and absorption of relative displacement in the front-rear direction and the left-right direction of the one building 2 and the other building 7 may be prevented. On the other hand, there is a problem that the reliability is low.

  In addition, since each slide side wall 15 is made of sheet metal, it is difficult to repair a plastic deformation portion or a damaged portion, and when plastic deformation or damage occurs, the slide side wall 15 is not limited to any extent. Since they must be replaced, there is a problem that the economic burden on maintenance management becomes large.

  The present invention solves such a problem, and an object of the present invention is to provide smooth relative movement between the joint plate and the crossing passage in the front-rear direction (first direction) and between the joint plate and the external passage. Smooth relative movement in the left-right direction (second direction) is allowed for a long period of time, and even if the L-shaped handrail unit is plastically deformed or damaged, Smooth relative movement and smooth relative movement in the second direction with the outer wall forming the passage opening are ensured, and absorption of relative displacement in the first direction and the second direction of one building and the other building is ensured. An object of the present invention is to provide a handrail-type expansion joint that can improve the reliability with respect to.

The handrail-type expansion joint according to the present invention has a transition passage opening formed in the outer wall of the external passage of one building, and one of the other buildings so as to communicate with the passage passage opening and the joint portion. A transition passage provided so as to project toward the building, and one end of the transition passage on the floor surface of the transition passage is supported so as to be slidable in a first direction approaching and separating from each building, and the other end is A joint plate slidably mounted in a second direction perpendicular to the first direction on the horizontal plane with respect to the floor surface of the external passage facing the opening for the transition passage, and a side wall on the joint portion side of the transition passage On the other hand, a pair of L-shaped handrail units consisting of one side relatively movable in the first direction and the other side relatively movable in the second direction with respect to the outer wall on which the opening for the passage is formed. Handrail type equipped with In Pansion joint,
One end portion of the joint plate is attached to the back surface of the joint plate at a predetermined interval in the second direction with a plurality of slide bars extending in the first direction on the floor surface of the transition passage. Supported in a slidable direction,
The other end portion of the joint plate extends in the second direction along the outer wall of the external passage and the opening for the transition passage through a slide rail extending in the second direction attached to the back surface of the joint plate. Is supported by a slide rail receiver attached to the one building so as to be slidable,
One side of each L-shaped handrail unit is erected on the joint plate,
The other side is characterized by being erected on the slide rail.

  According to this, the load applied to the joint plate acts on the plurality of slide bars extending in the first direction and the slide rail extending in the second direction. Compared with the roller rolling method, the load can be dispersed over a wide range. Therefore, even if a large load is applied to the joint plate, the load can be distributed over a wide range and stress can be generated, which reduces the stress generated by the load on multiple slide bars and slide rails. The deformation of the plurality of slide bars and the slide rail due to the stress is suppressed, and the smooth relative movement in the first direction between the joint plate and the crossing passage and the smooth relative movement in the second direction between the joint plate and the external passage. Can be allowed for a long time, and the relative displacement of each building in the first direction and the second direction can be absorbed for a long time.

  Further, the other end portion of the joint plate extends in the second direction along the outer wall of the external passage and the opening portion for the transition passage through the slide rail extending in the second direction attached to the back surface of the joint plate. Since the other end portion of the joint plate is restrained by being slidably supported by the slide rail receiver attached to the building, the swell deformation and lifting in the second direction over time are suppressed, The relative displacement of the building in the second direction can be absorbed for a long time, and traffic safety is ensured.

  Furthermore, since one side of each L-shaped handrail unit is erected on the joint plate and the other side is erected on the slide rail, an excessive force that was not assumed at the time of design is applied. Even if each handrail unit is plastically deformed or damaged, the plastic deformation or damage does not affect the side wall on the joint portion side of the connecting passage and the outer wall on which the opening for the connecting passage is formed. The relative displacement in the second direction can be absorbed.

  In the handrail-type expansion joint according to the present invention, it is desirable that a sliding material be interposed between the sliding surfaces of the plurality of slide bars and the floor surface of the crossing passage. According to this, since the frictional resistance of the sliding surface between each slide bar and the floor surface of the crossing passage becomes small, the smoothness of the relative movement in the first direction between the joint plate and the crossing passage can be further enhanced.

  In the handrail-type expansion joint according to the present invention, it is desirable to interpose a sliding material between the sliding surfaces of the slide rail and the slide rail receiver. According to this, since the frictional resistance of the sliding surface between the slide rail and the slide rail receiver is reduced, the smoothness of the relative movement in the second direction between the joint plate and the external passage can be further enhanced.

  In the handrail-type expansion joint according to the present invention, one side and the other side of each L-shaped handrail unit are vertically moved by at least a pair of struts of an upper chord material and a lower chord material and a plurality of eaves bars arranged between these struts. It is characterized by comprising a four-sided fence body connected to face each other. According to this, even if an excessive force that was not assumed at the time of design acts on each L-shaped handrail unit and should be plastically deformed or damaged, only the member that caused the plastic deformation or damage should be replaced. What is necessary is that it is not necessary to replace one or both of each L-shaped handrail unit, so that the economical burden on maintenance management can be reduced.

  Further, in the handrail-type expansion joint according to the present invention, the upper and lower end edges of the auxiliary handrail are attached to the pair of upper and lower guide rails which are attached in parallel to at least one side wall on the joint portion side of the transfer passage and extend in the first direction. And a pair of upper and lower first guide protrusions integrally projecting on each guide rail is connected to one side of at least one handrail unit of each L-shaped handrail unit. A pair of upper and lower second guide protrusions that are fitted in a pair of upper and lower guide grooves formed on the upper and lower end edges of the auxiliary handrail so as to be capable of sliding in the first direction and project integrally with the upper and lower end edges of the auxiliary handrail. The length of one side of at least one handrail unit of each L-shaped handrail unit provided with an auxiliary handrail by fitting a portion into the pair of upper and lower guide grooves so as to be slidable in the first direction. For short, thereby the size of the handrail unit.

  According to the present invention, a smooth relative movement in the first direction between the joint plate and the crossing passage and a smooth relative movement in the second direction between the joint plate and the external passage are allowed for a long period of time. Even if the handrail unit is plastically deformed or damaged, smooth relative movement in the first direction with the side wall on the joint portion side of the transition passage and smooth relative movement in the second direction with the outer wall having the passage passage opening formed therein. It is possible to increase the reliability of absorption of relative displacement in the first direction and the second direction of one building and the other building.

  Hereinafter, a preferred embodiment of a handrail-type expansion joint according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a handrail-type expansion joint 30 (hereinafter referred to as an expansion joint 30) of the present invention.

  In FIG. 1, the expansion joint 30 spans a joint 33 interposed between one adjacent building 31 and the other building 32, and is used for a crossing passage formed on the outer wall 35 of the external passage 34 of the one building 31. By connecting the opening 36 and a passage 37 provided so as to protrude from the other building 32 toward the opening 36 for the passage of one building 31, it is possible to pass between the buildings 31 and 32. In addition, the relative displacement between the first direction (the direction of the arrow X) in which the buildings 31 and 32 approach and separate from each other due to the earthquake and the second direction (the direction of the arrow Y) orthogonal to the first direction on the horizontal plane. Allow.

  The expansion joint 30 includes a joint plate 38 and a pair of L-shaped handrail units 39.

  2 is an AA enlarged arrow view of FIG. 1, FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1, FIG. 4 is an enlarged sectional view taken along line CC of FIG. 1, and FIG. 6 is an enlarged sectional view taken along the line DD, FIG. 6 is an enlarged sectional view of a part of FIG. 3, FIG. 7 is an enlarged sectional view taken along the line EE of FIG. 2, and FIG. FIG. 9 is an enlarged cross-sectional view of a part of FIG.

  1, 3, 4, 6, and 9, one end portion in the first direction of the joint plate 38 is slidable on the floor surface 41 between the side walls 37 a and 37 b on the joint portion side of the transition passage 37. Supported by That is, a plurality of slide bars 40 extending in the first direction with a predetermined interval in the second direction are attached to the back surface of the joint plate 38, and one end portion in the first direction of each slide bar 40 is the floor of the cross passage 37. It is supported on the surface 41 so as to be slidable.

  The plurality of slide bars 40 are made of stainless steel square pipes, and are attached to both ends in the second direction on the back surface of the joint plate 38 and at a predetermined interval therebetween, as shown in FIG. The lower surfaces of the pair of slide bars 40 at both ends in the second direction are supported by a guide rail 44 made of stainless steel and slidably moved, for example, with a resin sliding material 43 interposed therebetween. The bottom surface of the plurality of slide bars 40 (only one slide bar 40 is shown in FIG. 9) is slidable on the floor surface 41 of the crossing passage 37 with the sliding material 43 interposed therebetween. Supported by Thereby, the frictional resistance of the sliding surface between each slide bar 40 and the floor surface 41 of the crossing passage 37 is reduced, and the smoothness of the relative movement in the first direction between the joint plate 38 and the crossing passage 37 is enhanced.

  1, 3, 6, 7, and 8, the other end portion in the first direction of the joint plate 38 is in the first direction with respect to the floor surface 42 of the external passage 34 that faces the opening 36 for the transition passage. It is slidably mounted in a second direction perpendicular to the horizontal plane. In other words, the other end portion in the first direction of the joint plate 38 extends in the second direction on the back surface of the joint plate 38 and is attached to the slide rail 45, and is supported by the slide rail receiver 46 through the slide rail 45 so as to be slidable. .

  The slide rail 45 is made of an extruded shape made of stainless steel or aluminum alloy. Upward engagement pieces 45b extend in the longitudinal direction (second direction) over the entire length in the width direction (first direction) of the lower side 45a. 45d of upward bolt fitting grooves 45d extending in the longitudinal direction (second direction) are formed at both ends in the width direction (second direction) of the upper side portion 45c. A standing plate 45f that connects the bottom plate 45e of the groove 45d and the base of each engagement piece 45b, and a reinforcing rib 45g that connects the lower side 45a and the width direction (second direction) intermediate portion of the upper side 45c.

  The slide rail receiver 46 is of a cross-sectional channel shape made of an extruded shape of stainless steel or aluminum alloy, and the length in the longitudinal direction (second direction) is a slide to allow the slide rail 45 to slide. It is set sufficiently larger than the length of the rail 45 in the longitudinal direction (second direction) and the dimension of the joint plate 38 in the width direction (dimension in the second direction). Then, at the upper end of each flange 46a at both ends in the width direction (first direction), a slide rail mounting surface that is bent inward horizontally, and a hook-like fold downward from the inner end of the slide rail mounting surface. The bent engagement piece 46c extends in the longitudinal direction (second direction) and is integrally formed, and the web 46d connecting the flanges 46a has a predetermined interval in the longitudinal direction (second direction) on its upper surface. Along with the reinforcing plate 47 made of steel plate placed at a distance, a plurality of anchor bolts 48 are used to connect the joint portion 33 from one building 31 below the floor surface 42 of the external passage 34 facing the opening portion 36 for the passageway. And is fixed to the upper surface of the support portion 49 provided to extend in the second direction.

  The other end of the joint plate 38 in the first direction is attached to the upper surface of the slide rail 45 via a joint plate fitting 50 made of steel plate. That is, the joint plate mounting hardware 50 includes a web 50a, a pair of flanges 50b extending downward from both ends in the width direction (first direction) of the web 50a, and mounting pieces 50c horizontally bent outward from the lower ends of the flanges 50b. The other end portion in the first direction of the joint plate 38 is attached to the upper surface of the web 50a by a plurality of screws 51. Each mounting piece 50c is interposed between a bolt 52 having its head portion fitted in each bolt fitting groove 45d of the slide rail 45 and a nut 53 screwed to the bolt 52, and the bolt 52, nut. Fastening 53 is attached to the upper surface of the slide rail 45. As a result, the other end portion in the first direction of the joint plate 38 is restrained, so that it is possible to suppress waviness deformation and lifting in the second direction over time, and to ensure safety of passage.

  The slide rail 45 is supported by the slide rail receiver 46 so as to be slidable in the second direction with the other end portion in the first direction of the joint plate 38 attached to the upper surface via the joint plate mounting hardware 50. That is, the bottom plate 45e of each bolt fitting groove 45d is placed on the slide rail placing surface of the slide rail receiver 46, and the engaging pieces 45b and the engaging pieces 46c of the slide rail receiver 46 are engaged with each other. In this state, the slide rail 45 is supported so as to be slidable in the second direction, and the downward bending of the slide rail 45 is suppressed by the interference of the both ends of the reinforcing plate 47 in the second direction with the lower side portion 45a.

  Between the sliding surfaces of the slide rail 45 and the slide rail receiver 46, that is, between the bottom plate 45e of the bolt fitting groove 45d and the slide rail mounting surface 46b, the outer surface of each vertical plate 45f, and the engagement pieces 46c. The slide rail 45 is moved by the slide rail receiver 46 in a state in which the resin sliding material 43 is interposed between the outer surface and between the engagement pieces 45b and the inner surfaces of the engagement pieces 46c and the flanges 46a. By supporting the sliding movement in the second direction so as to be slidable, the frictional resistance of the sliding surfaces of the slide rail 45 and the slide rail receiver 46 is reduced, and the relative movement of the joint plate 38 and the external passage 34 in the second direction is reduced. Smoothness is improved.

  1 to 10, each L-shaped handrail unit 39 has a side 54 that can move relative to the side walls 37 a and 37 b on the joint portion side of the crossing passage 37 in the first direction and a crossing passage opening 36. The other side 55 is relatively movable in the second direction with respect to the formed outer wall 35, and each side 54, 55 is connected to each other by a connecting plate 56 made of aluminum alloy, and the one side 54 is a joint plate 38. The other side 55 is erected on the slide rail 45, and the other side 55 is erected on both ends in the width direction (both ends in the second direction).

  One side 54 of each L-shaped handrail unit 39 has a pair of struts 54c at both ends in the first direction and struts 54d at the middle in the first direction. And the other side 55 of each L-shaped handrail unit 39 is a second side 55 of the L-shaped handrail unit 39. An upper chord member 55a and a lower chord member 55b that extend in the direction and face each other vertically are arranged between a pair of struts 55c at both ends in the second direction, a strut 55d at the second intermediate portion, and each strut 55c and the intermediate strut 55d. It consists of a four-sided fence body connected by a plurality of fences 55e. The upper chord members 54a and 55a, the lower chord members 54b and 55b, the struts 54c and 55c, the intermediate struts 54d and 55d, and the crosspieces 54e and 55e can be made of extruded shapes made of stainless steel or aluminum alloy. Thereby, the productivity and assembling performance of each L-shaped handrail unit 39 are improved.

  9 and 10, one side 54 of each L-shaped handrail unit 39 has a pair of support columns 54 c at both ends in the first direction and a lower end portion of the support column 54 d in the first direction intermediate portion via a base plate 60. 38 is provided upright at both ends in the width direction (both ends in the second direction).

  7, 8, and 10, the other side 55 of each L-shaped handrail unit 39 has a base plate 57 at the lower end of each of the pair of columns 55 c at both ends in the second direction and the column 55 d at the middle in the second direction. It is erected in a vertical posture on the slide rail 45 by being attached to the slide rail 45 via the. That is, the four corners of the base plate 57 are interposed between a bolt 58 having its head portion fitted in each bolt fitting groove 45d of the slide rail 45, and a nut 59 screwed to the bolt 58, and the bolt 58 and nut. By fastening 59, it is attached to the upper surface of the slide rail 45.

  In each L-shaped handrail unit 39, one handrail unit 39 located on the upper side in FIG. 1, the left side in FIG. 9, and the right side in FIG. 10 has a length in the first direction of one side 54 as shown in FIG. L is made smaller than the length L1 in the first direction of one side 54 of the handrail unit 39 on the opposite side. Then, as shown in FIG. 9, the upper and lower end edges of the auxiliary handrail 62 are connected to the pair of upper and lower guide rails 61 that are attached in parallel to the side wall 37a on the joint portion side of the crossing passage 36 and extend in the first direction. An upper and lower pair of upper and lower chord members 54a and 54b, each of which is formed with a pair of upper and lower first guide protrusions 63 projecting integrally with the guide rails 61, are fitted to each other so as to be slidable in one direction. A pair of upper and lower second guide protrusions 65 are fitted into the pair of guide grooves 64 so as to be slidable in the first direction, and project integrally with the upper and lower end edges of the auxiliary handrail 62. By being fitted to be slidable in the first direction, the length L1 in the first direction of one side 54 of one handrail unit 39 provided with the auxiliary handrail 62 is shortened, and the handrail unit 39 can be made compact. Each guide rail 61 is attached to one side wall 37a via a bracket 61a and an anchor bolt 61b.

  The length of one side 54 of the other handrail unit 39 located on the lower side of FIG. 1, the right side of FIG. 9 and the left side of FIG. 10 is the length L in the first direction of one side 54 of the one handrail unit 39. Similarly, the pair of upper and lower guide rails 61, the auxiliary handrail 62, the pair of upper and lower first guide protrusions 63, the pair of upper and lower guide grooves 64, and the pair of upper and lower pair of first guide rails 61, like the one side 54 of the one handrail unit 39. By associating the two guide protrusions 65, the length L1 in the first direction of one side 54 of the other handrail unit 39 including the auxiliary handrail 62 is shortened, and both handrail units 39 can be made compact.

  1 and 6, a parting material 67 attached to the slide rail receiver 46 via a bracket 66 corresponds to one end in the first direction of the joint plate 38, and the other end in the first direction of the joint plate 38 corresponds to the one end in the first direction. A parting material 68 is attached.

  The expansion joint 30 configured as described above is stationary in a standard state shown in FIG.

  Now, when the buildings 31 and 32 are relatively displaced in the direction of approaching by the earthquake (arrow X1) and the joint portion 33 becomes narrow, the joint plate 38, the crossing passage 37, and one side of one handrail unit 39, as shown in FIG. 54, the side wall 37b on the joint portion side, the one side 54 of the other handrail unit 39, the auxiliary handrail 62, and the side wall 37a on the joint portion side slide to absorb relative displacement in the direction in which the buildings 31 and 32 approach each other. To do. Further, when the buildings 31, 32 are relatively displaced in the direction (arrow X2) away from each other in the standard state shown in FIG. 11 and the joint portion 33 is widened, the joint plate 38 and the crossing passage 37 are formed as shown in FIG. The one side 54 of the one handrail unit 39 and the side wall 37b on the joint portion side, the one side 54 of the other handrail unit 39, the auxiliary handrail 62, and the side wall 37a on the joint portion side slide, and the buildings 31 and 32 are separated. Absorbs relative displacement in the direction of

  When the buildings 31 and 32 are relatively displaced in the second direction (arrow Y) due to an earthquake in the standard state shown in FIG. 11, the outer wall 35 and the joint plate 38 of the external passage 34 of one building 31 as shown in FIG. Is slid in the second direction (arrow Y), and the other side 55 of each handrail unit 39 and the outer wall 35 of the external passage 34 of one building 31 are slid to move to the second of each building 31, 32. Absorbs relative displacement in the direction (arrow Y). Further, as shown in FIG. 15, the outer wall 35 and the joint plate 38 of the external passage 34 of one building 31 slide in the second direction (arrow Y), and the other side 55 of each handrail unit 39 and the other side The outer wall 35 of the external passage 34 of the building 31 slides and absorbs the relative displacement of the buildings 31 and 32 in the second direction (arrow Y).

  According to the expansion joint 30 of the present invention, the load applied to the joint plate 38 acts on the plurality of slide bars 40 extending in the first direction and the slide rail 45 extending in the second direction. Compared with the 1st-4th roller rolling system of the said patent document 1, a load can be disperse | distributed to wide range. Therefore, even if a large load is applied to the joint plate 38, the load can be distributed over a wide range and a stress can be generated, whereby the stress generated by the load on the plurality of slide bars 40 and the slide rail 45 can be reduced. Therefore, the deformation of the plurality of slide bars 40 and the slide rail 45 due to this stress is suppressed, and the relative movement of the joint plate 38 and the crossing passage 37 in the first direction and the joint plate 38 and the outer passage 34 are reduced. The relative movement in the second direction can be allowed over a long period of time, and the relative displacement of each building 31, 32 in the first direction and the second direction can be absorbed for a long period of time.

  In addition, since one side 54 of each L-shaped handrail unit 39 is erected on the joint plate 38 and the other side 55 is erected on the slide rail 45, an excessive amount that is not assumed at the time of design is provided. Even if each L-shaped handrail unit 39 is plastically deformed or damaged due to an excessive force, the plastic deformation or damage is caused by the side walls 37a and 37b on the joint portion side of the crossing passage 37 and the crossing passage opening 36. Since it does not affect the formed outer wall 35, the relative displacement of each building 31, 32 in the first direction and the second direction can be absorbed.

  Further, one side 54 of each L-shaped handrail unit 39 is vertically moved by a pair of struts 54c, an intermediate strut 54d, and a plurality of eaves 54e disposed between the struts 54c and 54d. The other side 55 is composed of an upper chord member 55a and a lower chord member 55b arranged between a pair of support posts 55c, an intermediate support post 55d, and these support posts 55c and 55d. Since it consists of a four-sided fence body that is vertically opposed by a plurality of fences 55e, an excessive force that was not assumed at the time of design acts on each L-shaped handrail unit 39. Even if plastic deformation or damage occurs, it is only necessary to replace the member in which the plastic deformation or damage has occurred, and it becomes unnecessary to replace one or both of each L-shaped handrail unit 39.This can reduce the economic burden on maintenance management.

It is a top view which shows one Embodiment of this invention. It is an AA expansion arrow line view of FIG. It is an expanded sectional view which follows the BB line of FIG. It is an expanded sectional view which follows the CC line of FIG. It is an expanded sectional view which follows the DD line of FIG. It is sectional drawing to which a part of FIG. 3 was expanded. It is an expanded sectional view which follows the EE line of FIG. It is a FF arrow line view of FIG. It is sectional drawing to which a part of FIG. 4 was expanded. It is the enlarged plan view which notched a part of a pair of L-shaped handrail unit. It is a top view at the time of a standard stationary. It is a top view in the state where relative displacement was performed in the direction in which each building approaches. It is a top view of the state which carried out relative displacement in the direction where each building leaves | separates. It is a top view of one state where each building was relatively displaced in the 2nd direction. It is a top view of the other state where each building was relatively displaced in the 2nd direction. It is a top view of a prior art example. It is an expanded sectional view which follows the 2-2 line of FIG. It is an expanded sectional view which follows the 3-3 line of FIG. It is a description perspective view of the opening part for a transition passage of a prior art example. It is a top view by the side of the joint part of the transition passage of a prior art example. It is a description perspective view of the joint plate of a prior art example. It is a description perspective view of the slide side wall of a prior art example. It is explanatory sectional drawing of the state which moved to the front-back direction of the prior art example. It is a description top view of the state which moved to the left-right direction of the prior art example. It is an expanded sectional view showing other conventional examples. It is an expanded sectional view which shows the conventional different example. It is front sectional drawing which shows the further different example of the past.

Explanation of symbols

30 Handrail type expansion joint 31 One building 32 Other building 33 Joint part 34 External passage 35 Outer wall 36 Transition passage opening 37 Transition passage 38 Joint plate 39 A pair of L-shaped handrail units 40 Slide bar
41 Floor surface of crossing passage 42 Floor surface of external passage 43 Sliding material 45 Slide rail 46 Slide rail receiver 54 One side of L-shaped handrail unit 54a Upper chord material 54b Lower chord material 54c Side rail 55 Other side of L-shaped handrail unit 55a Upper chord material 55b Lower chord material 55c A pair of upper and lower guide rails 61 A pair of upper and lower guide rails 62 Auxiliary handrail 63 A pair of upper and lower first guide protrusions 64 A pair of upper and lower guide grooves 65 A pair of upper and lower second guide protrusions Arrow X First direction Arrow Y Second direction

Claims (5)

A transition passage opening formed on the outer wall of the external passage of one building, and provided so as to protrude from the other building toward one building so as to communicate with the passage passage opening via the joint. A crossover passage, and an external passage that is supported on the floor of the crossover passage so that one end is slidable in a first direction approaching and separating from the buildings, and the other end faces the crossover opening. A joint plate that is slidably mounted in a second direction orthogonal to the first direction in the first direction with respect to the floor surface, and is movable in the first direction relative to the side wall on the joint portion side of the transition passage. A handrail-type expansion joint comprising a pair of L-shaped handrail units each having a single side and another side that is relatively movable in the second direction with respect to the outer wall on which the passage passage opening is formed,
One end portion of the joint plate is attached to the back surface of the joint plate at a predetermined interval in the second direction with a plurality of slide bars extending in the first direction on the floor surface of the transition passage. Supported in a slidable direction,
The other end portion of the joint plate extends in the second direction along the outer wall of the external passage and the opening for the transition passage through a slide rail extending in the second direction attached to the back surface of the joint plate. Is supported by a slide rail receiver attached to the one building so as to be slidable,
One side of each L-shaped handrail unit is erected on the joint plate,
The other side is erected on the slide rail, and is a handrail-type expansion joint. In the handrail type expansion joint according to claim 1,
A handrail-type expansion joint, wherein a sliding material is interposed between sliding surfaces of the plurality of slide bars and the floor surface of the crossing passage. In the handrail type expansion joint according to claim 1,
A handrail-type expansion joint, wherein a sliding material is interposed between sliding surfaces of the slide rail and the slide rail receiver. In the handrail type expansion joint according to claim 1,
One side and the other side of each of the L-shaped handrail units have four sides in which an upper chord member and a lower chord member are connected to each other up and down by at least a pair of columns and a plurality of eaves bars arranged between the columns. A handrail-type expansion joint characterized by the fact that it is composed of assembled fences. In the handrail-type expansion joint according to claim 1 or 4,
The upper and lower end edges of the auxiliary handrail are fitted to a pair of upper and lower guide rails attached in parallel to at least one side wall on the joint portion side of the crossing passage so as to extend in the first direction. And a pair of upper and lower first guide protrusions integrally projecting from the respective guide rails are formed at upper and lower end edges of one side of at least one of the L-shaped handrail units, respectively. The pair of upper and lower guide grooves are fitted into the pair of upper and lower guide grooves so as to be capable of sliding in the first direction, and a pair of upper and lower second guide protrusions integrally projecting at both upper and lower edge portions of the auxiliary handrail are formed in the pair of upper and lower guide grooves. A handrail type expansion joint characterized by being fitted so as to be slidable in a first direction.

Images