JP2011247020A - Passage facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress movement (displacement) of passage facilities installed between a pair of buildings at the time of an earthquake.SOLUTION: A staircase 20 includes a girder 30 whose lower end is jointed to a platform 12 and whose upper end is jointed to an upper story part 14, and a tread 40 supported by the girder 30. The girder 30 is composed of a plurality of articulated structural materials 321, 322, and 323, and is so configured that a mountain-fold joint and a valley-fold joint repeating from one end to the other and bending angles of the joints are variable. The tread 40 is divided into multiple pieces.

Description

  The present invention relates to a passage facility constructed between a pair of structures.

  In a base-isolated building structure in which an upper structure and a lower structure are joined via a base isolation device, the stairs that pass through the base isolation floor where the base isolation device is arranged are structurally cut off from the lower structure. The thing which aimed at seismic isolation is known (for example, refer patent document 1).

  In addition, in the seismic isolation building structure in which the seismic isolation building and the building adjacent to the building are connected by a crossing corridor, it is known that the seismic isolation is achieved by providing an expansion joint in the crossing corridor (for example, , See Patent Document 2).

Japanese Patent Laid-Open No. 2001-349089 JP 2000-73582 A

  In the base-isolated building structure described in Patent Document 1, the entire portion from the upper end to the edge cutting portion in the stairs joined to the upper structure is displaced relative to the lower structure following the upper structure. For this reason, when an earthquake occurs, the edge cut portion of the stairs is greatly displaced. Moreover, when an expansion joint is provided in the crossing corridor like the seismic isolation building structure described in Patent Document 2, the construction is difficult and the cost is increased.

  This invention is made | formed in view of the said situation, and it aims at suppressing that the channel | path installation constructed between a pair of structures moves (displaces) at the time of the occurrence of an earthquake.

  In order to solve the above problem, a passage facility according to the present invention is supported by a girder having one end joined to one of a pair of structures and the other end joined to the other of the pair of structures. The girder includes a plurality of structural members connected to each other, and a mountain fold node and a valley fold node are repeated from one end to the other end, and the node is bent. The angle is variable, and the footboard is divided into a plurality of parts.

  In the above-described passage facility, the girder may be configured as a pantograph mechanism in which a connection body formed by intersecting and connecting a pair of the structural members is a plurality of articulated members. The pair of structural members of the coupling body may be supported by a node where they intersect.

  In the passage facility, one of the pair of structures may be a non-seismic isolation structure, and the other of the pair of structures may be a seismic isolation structure arranged on the upper side of the one. . Furthermore, the passage facility may be any one of a staircase, a slope, a landing, and a passageway.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the channel | path installation constructed between a pair of structures moves (displaces) at the time of the occurrence of an earthquake.

It is an elevation view which shows a base-isolated building provided with the stairs concerning one embodiment. It is an elevation view which shows the staircase which concerns on one Embodiment. It is a disassembled perspective view which shows the staircase which concerns on one Embodiment. (A) is an exploded perspective view showing the structure of the hinge, (B) is a perspective view showing the structure of the hinge. (A) is an exploded perspective view showing the structure of the hinge, (B) is a perspective view showing the structure of the hinge. It is an elevation view which shows a base-isolated building provided with the stairs concerning a comparative example. It is an elevation for demonstrating the effect | action of a base-isolated building provided with the staircase which concerns on one Embodiment. It is an elevation which shows the stairs concerning a comparative example. It is an elevation view which shows the staircase which concerns on one Embodiment. It is an elevation view which expands and shows the stairs which concern on other embodiment. It is an elevational view showing a slope according to another embodiment. It is an elevational view showing a landing according to another embodiment. It is a bottom view which shows the landing which concerns on other embodiment. It is an elevation view which shows a base-isolated building provided with the transfer corridor which concerns on other embodiment. It is an elevation view which shows the crossing corridor which concerns on other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an elevation view showing a configuration of a base-isolated building 10 including stairs 20 according to an embodiment. As shown in this figure, the base-isolated building 10 is a station building, a railway platform 12 that is a non-base-isolated structure, a frame 13 built so as to straddle the platform 12 and the track 11, a base isolation rubber, and the like. The upper floor 14 which is a seismic isolation structure built on the frame 13 via the seismic isolation device 15 of the above, and the stairs 20 whose upper end is joined to the upper floor 14 and whose lower end is joined to the home 12. ing.

  FIG. 2 is an elevation view showing the configuration of the stairs 20. In addition, the left-right direction shown by the arrow X in the figure is the direction in which the longitudinal direction of the home 12 and the track extend. As shown in this figure, the stairs 20 includes a plurality of (for example, three) girders 30 whose upper ends are joined to the upper floor portion 14 and whose lower ends are joined to the home 12, and a footboard 40 supported by the plurality of girders 30. It has. The tread board 40 is divided for each step and is arranged in the ascending / descending direction (the direction of arrow A in the figure inclined with respect to the direction of arrow X in the figure).

  FIG. 3 is an exploded perspective view showing the stairs 20. As shown in this figure, the plurality of girders 30 are arranged at predetermined intervals in the horizontal direction (in the direction of arrow Y in the figure) orthogonal to the ascending / descending direction, and each of the girders 30 extends in the ascending / descending direction.

  The girder 30 is connected by a hinge 37 to a pantograph mechanism 32 that expands and contracts in the vertical direction, a lower joint 34 that is connected to one end (lower end) of the pan tag lug mechanism 32 by a hinge 37, and the other end (upper end) of the pantograph mechanism 32. And a fixed portion 36. The lower fixing portion 34 is pin-joined to the home 12, and the upper joint portion 36 is pin-joined to the upper floor portion 14.

  The pantograph mechanism 32 is formed by articulating plate-shaped structural members 321, 322, and 323 having a width in a direction orthogonal to the ascending / descending direction and the horizontal direction (the direction of arrow B in the figure). The pantograph mechanism 32 has a configuration in which a plurality of connecting bodies 32X formed by connecting structural members 321 and 322 in an X shape are connected in a vertical direction. In addition, at the upper and lower ends of the pantograph mechanism 32, a connecting body 32V in which a pair of structural members 323 are connected in a V shape is connected to the connecting body 32X.

  The structural members 321 and 322 are rotatably connected to each other via a hinge 33 at the intersection. The structural members 321 and 322 are connected to each other via a hinge 35 so as to be rotatable at a connection point between the connecting bodies 32X. The structural material 323 is connected to the structural materials 321 and 322 at both upper and lower ends via a hinge 35 so as to be rotatable with respect to each other. As a result, the pantograph mechanism 32 is configured such that a mountain-folded node (hinge 35) and a valley-folded node (hinge 33) are repeated from one end to the other, and the bending angle of the node is variable. Yes.

  Each tread board 40 has a configuration in which a horizontal tread surface 40A and a kick-up 40B perpendicular to the tread surface 40A are integrated, and constitutes each step of the stairs 20. The upper end of the connecting pin 38 provided in the hinge 33 is fixed to the back surface of the tread surface 40 </ b> A, and each tread plate 40 is supported by the hinge 33.

  FIG. 4A is an exploded perspective view showing the structure of the hinge 33, and FIG. 4B is a perspective view showing the structure of the hinge 33. As shown in these drawings, the hinge 33 provided at the intersection of the coupling body 32X is inserted into the sleeve 321S included in the structural member 321, the sleeve 322S included in the structural member 322, and the sleeves 321S and 322S. And a connecting pin 38 that is movably connected.

  The structural member 321 is formed by joining a pair of plate members 321A and 321B arranged in a row via a sleeve 321S. The structural member 322 is formed by joining a pair of plate members 322A and 322B arranged in a row via a sleeve 322S. The sleeve 322S is a bottomed cylinder, and the connecting pin 38 is held by the bottom of the sleeve 322S.

  Here, in the structural material 321, the sleeve 321 </ b> S and the notch 321 </ b> C are arranged in this order in the insertion direction of the connecting pin 38 (the direction of arrow C in the drawing). In the structural material 322, the notch 322 </ b> C is inserted in the insertion direction of the connecting pin 38. And the sleeve 322S are arranged in this order. The sleeve 321S of the structural material 321 is inserted into the notch 322C of the structural material 322, and the sleeve 322S of the structural material 322 is inserted into the notch 321C of the structural material 321. Thereby, the structural members 321 and 322 are connected so as to intersect in an X shape within the same plane.

  FIG. 5A is an exploded perspective view showing the structure of the hinge 35, and FIG. 5B is a perspective view showing the structure of the hinge 35. As shown in these figures, the hinge 35 provided at the connection point between the connecting bodies 32X is provided at the sleeve 321R provided at one end in the longitudinal direction of the structural member 321 and at one end in the longitudinal direction of the structural member 322. And a connecting pin 39 that is inserted into the sleeves 321R and 322R and rotatably connects the sleeves 321R and 322R.

  Here, in the structural material 322, the sleeve 322R and the stepped portion 322D are arranged in this order in the insertion direction of the connecting pin 39 (the direction of arrow C in the figure). In the structural material 321, the stepped portion 321D in the inserting direction of the connecting pin 39. And the sleeve 321R are arranged in this order. The sleeve 322S of the structural material 322 is disposed in the step portion 321D of the structural material 321, and the sleeve 321R of the structural material 321 is disposed in the notch 322D of the structural material 322. Thereby, the coupling bodies 32X are coupled in the up-and-down direction within the same plane.

  FIG. 6 is an elevation view showing the lower joint 34 in an enlarged manner. As shown in this figure, the lower joint 34 is connected to the lower connecting body 32V by a hinge 37 and is pin-connected to the steel beam 16 installed on the back side of the floor surface of the home 12. The lower joint portion 34 includes a gusset plate 34A and a connection pin 34B that rotatably connects the gusset plate 34A to the steel beam 16. The connecting pin 34 </ b> B is arranged in parallel with the horizontal direction orthogonal to the home 12 (arrow Y direction shown in FIG. 3).

  The hinge 37 includes a sleeve 323S provided on one of the pair of structural members 323, a sleeve 323S 'provided on the other of the pair of structural members 323, and a pair of sleeves 34C and 34D provided on the gusset plate 34A. And a connecting pin 38 inserted therein. The sleeve 34C, the sleeve 323S, the sleeve 323S ′, and the sleeve 34D are arranged in this order in the insertion direction of the connecting pin 38 (the direction of arrow C in the figure), whereby the lower joint 34 and the connecting body 32V are connected to the connecting pin. 38 is pivotally connected around 38.

  FIG. 7 is an elevation view showing the upper joint 36 in an enlarged manner. As shown in this figure, the upper joint 34 is connected to the upper connecting body 32V by a hinge 37 and is pin-connected to the steel beam 18 installed on the back side of the floor surface of the upper floor 14. The upper joint portion 36 includes a gusset plate 36A and a connection pin 36B that rotatably connects the gusset plate 36A to the steel beam 18. The connecting pin 36 </ b> B is arranged in parallel to the horizontal direction (the arrow Y direction shown in FIG. 3) orthogonal to the home 12.

  The hinge 37 includes a sleeve 323S provided on one of the pair of structural members 323, a sleeve 323S 'provided on the other of the pair of structural members 323, and a pair of sleeves 36C and 36D provided on the gusset plate 36A. And a connecting pin 38 inserted therein. The sleeve 36C, the sleeve 323S, the sleeve 323S ', and the sleeve 36D are arranged in this order in the insertion direction of the connecting pin 38 (the direction of arrow C in the figure), whereby the lower joint 34 and the connecting body 32V are connected to each other. 38 is pivotally connected around 38.

  By the way, when a ground motion acts on the seismic isolation building 10, the home 12 which is a non-base isolation structure and the upper floor part 14 which is a base isolation structure tend to be relatively displaced. When the home 12 and the upper floor portion 14 are to be relatively displaced in the longitudinal direction of the home 12 (the arrow X direction shown in FIGS. 2 and 3), the plurality of girders 30 are moved by the pantograph mechanism 32. It expands and contracts in the ascending / descending direction (arrow A direction shown in FIGS. Thereby, the relative displacement to the longitudinal direction of the home 12 of the home 12 and the upper floor part 14 is accept | permitted.

  In addition, when the home 12 and the upper floor portion 14 are about to be displaced in the width direction of the home 12 (the direction of the arrow Y shown in FIG. 3), the plurality of girders 30 are moved at their upper and lower ends by the pantograph mechanism 32. It swings in the width direction of the home 12 as a fulcrum. Thereby, relative displacement of the home 12 and the upper floor portion 14 in the width direction of the home 12 is allowed.

  Therefore, although the upper floor part 14 which is a seismic isolation structure and the upper end of the stairs 20 are joined, and the home 12 which is a non-seismic isolation structure and the lower end of the stairs 20 are joined, the upper floor part. 14 can be seismically isolated.

  FIG. 8 is an elevation view showing the seismic isolated building 500 according to the comparative example. As shown in this figure, in the base-isolated building 500, the lower end of the stairs 20 is structurally cut with respect to the platform 12. For this reason, the amount of relative displacement of the stairs 20 with respect to the platform 12 when an earthquake occurs is uniform from the upper end to the lower end of the stairs 20. That is, Y1 for displacement in the Y direction in the drawing of the upper floor portion 14 at the time of the occurrence of the earthquake, a displacement amount Y2 in the Y direction in the drawing at the upper end of the stairs 20, and a displacement in the Y direction in the drawing at the lower end of the stairs 20 The quantity Y3 becomes equal.

  On the other hand, as shown in FIG. 9, in the present embodiment in which the lower end of the stairs 20 whose upper end is joined to the upper floor portion 14 is joined to the home 12, the stairs 20 is relatively relative to the home 12 when an earthquake occurs. The typical displacement amount gradually decreases from the upper end to the lower end of the staircase 20, and becomes zero at the lower end. Thereby, compared with the case where the lower end is structurally edged with respect to the home 12, the total amount of relative displacement with respect to the home 12 of the stairs 20 at the time of an earthquake occurrence can be suppressed to about half.

  As described above, according to the seismic isolation building 10 according to the present embodiment, the upper floor portion 14 can be seismically isolated, and the relative displacement amount of the stairs 20 with respect to the home 12 when an earthquake occurs can be suppressed.

  Further, in the staircase 20 according to the present embodiment, the connection pin 38 protrudes from a node where the structural members 321 and 322 of the connection body 32X intersect, and each tread plate 40 is fixed to the tip thereof. Here, for example, when the connecting pin 39 protrudes from two nodes connecting the connecting bodies 32X, and each tread plate 40 is fixed to the tips of the two connecting pins 39, the two nodes are not connected. It will be restrained by each footboard 40. Thereby, the pantograph mechanism 32 cannot expand and contract and cannot swing. On the other hand, in the staircase 20 according to the present embodiment, since each tread plate 40 is fixed to the connecting pin 38 as described above, the pantograph mechanism 32 can expand and contract and swing.

  Further, when the pantograph mechanism 32 expands and contracts, the plurality of connecting pins 38 move linearly along the expansion / contraction direction. Thereby, by fixing each tread board 40 to the connecting pin 38, when the pantograph mechanism 32 expands and contracts, the plurality of tread boards 40 can be linearly moved along the extension / contraction direction.

  In this embodiment, the tread of the stairs 20 is divided for each step, but may be divided for a plurality of steps. Further, in the present embodiment, the entire staircase 20 is configured to be extendable and swingable, but only a part thereof, such as an intermediate portion of the staircase 20, may be configured to be extendable and swingable.

  Moreover, in this embodiment, the whole from the upper end of a staircase to the lower end was comprised by the beam 30 which can be expanded-contracted, and the step board 40 divided | segmented into plurality. However, as shown in FIG. 10, the lower part of the staircase may be a reinforced concrete staircase 21 integrated with the floor of the non-seismic isolation structure. In this case, the lower end of the staircase 20 may be joined to the staircase 21 by, for example, connecting the gusset plate 34A of the lower joint 34 to the gusset plate 19 fixed to the side surface of the staircase 21 by the connecting pin 34B.

  FIG. 11 is an elevation view showing the base-isolated building 100 including the slope 120 according to another embodiment. As shown in this figure, the seismic isolation building 100 includes a slope 120 whose upper end is pin-joined to the upper floor portion 14 and whose lower end is pin-joined to the home 12.

  The slope 120 has a plurality of (for example, three) girders 30 whose upper ends are joined to the upper floor portion 14 and whose lower ends are joined to the home 12, and are supported by the plural girders 30 and arranged in the ascending / descending direction (arrow A direction in the figure). And a plurality of tread plates 140.

  Each tread plate 140 is a plate material extending in a horizontal direction orthogonal to the ascending / descending direction, and an upper end of a connecting pin 38 included in the hinge 33 is fixed to the back surface of the tread plate 140 and supported by the hinge 33. The pair of footboards 140 adjacent to each other in the ascending / descending direction is arranged such that the lower end of one footboard 140 and the upper end of the other footboard 140 overlap each other.

  According to the slope 120 which concerns on this embodiment, the upper end of the slope 120 is joined to the upper floor part 14 which is a seismic isolation structure similarly to the stairs 20 which concerns on the above-mentioned embodiment, and the home 12 which is a non-seismic isolation structure Although the lower end of the slope 120 is joined, the upper floor part 14 can be seismically isolated. Moreover, compared with the case where the lower end of the slope 120 is structurally edged with respect to the home 12, the total amount of relative displacement with respect to the home 12 of the slope 120 at the time of an earthquake occurrence can be suppressed to about half.

  FIG. 12 is an elevation view showing a base-isolated building 200 including a landing 220 according to another embodiment. FIG. 13 is a bottom view showing the landing 220. As shown in these drawings, the seismic isolation building 200 includes an upper stairs 202 whose upper end is joined to the upper floor portion 14, a lower stairs 204 whose lower end is joined to the home 12, and one end that is the lower end of the upper stairs 202. And a landing 220 with the other end joined to the upper end of the lower step 204.

  The landing 220 is supported by a plurality of (for example, three as shown in FIG. 13) girders 230 whose one end is joined to the lower end of the upper step 202 and the other end is joined to the upper end of the lower step 204, and the plural girders 230. And a plurality of footboards 140 arranged in a horizontal direction (in the direction of arrow X in the figure) from the lower end of the upper step 202 toward the upper end of the lower step 204.

  As shown in FIG. 13, the plurality of girders 230 are arranged at predetermined intervals in the horizontal direction (arrow Y direction in the figure) orthogonal to the ascending / descending direction, and each girder 230 extends in the arrow X direction in the figure. Yes. The girder 230 includes a pantograph mechanism 32 that expands and contracts in the direction of arrow X in the figure, a fixing part 236 coupled to one end of the pan tag lug mechanism 32, and a fixing part 234 coupled to the other end of the pantograph mechanism 32. The fixing part 236 is fixed to the lower end of the upper step 202, and the fixing part 234 is fixed to the upper end of the lower step 204.

  Each tread plate 140 is a plate material extending in a horizontal direction (arrow Y direction in the figure) orthogonal to the ascending / descending direction, and an upper end of a connecting pin 38 provided on the hinge 33 is fixed to the back surface thereof, and is supported by the hinge 33. Yes. The pair of footboards 140 adjacent to each other in the direction of the arrow X in the figure are arranged so that the lower end of one footboard 140 and the upper end of the other footboard 140 overlap each other.

  According to the landing 220 according to the present embodiment, there is a landing on the upper stairs 202 joined to the upper floor part 14 that is a seismic isolation structure and the lower stairs 204 joined to the home 12 that is a non-seismic isolation structure. Even though 220 is joined, the upper floor portion 14 can be seismically isolated. In addition, the total amount of relative displacement between the upper stairs 202 and the lower stairs 204 at the time of the earthquake is compared with the case where the upper stairs 202 and the lower stairs 204 are structurally bordered on the landing. Can be suppressed to about half.

  In the present embodiment, the landing 220 connecting the upper stairs 202 and the lower stairs 204 is described as an example. However, the landing 220 may be applied to a landing connecting upper and lower escalators.

  FIG. 14 is an elevational view showing a base-isolated building 300 including a transfer corridor 320 according to another embodiment. As shown in this figure, the seismic isolation building 300 includes structures 302 and 304 that are built apart from each other, and a passageway 320 that has one end joined to the structure 302 and the other end joined to the structure 304. ing. The structure 302 is a building that is a seismic isolation structure in which a base isolation device 306 is installed at the base, and the structure 304 is a building that is a non-base isolation structure.

  FIG. 15 is an elevational view showing the crossing corridor 320. As shown in this figure, the crossing corridor 320 is supported by a plurality of (for example, three) girders 230 having one end joined to the structure 302 and the other end joined to the structure 304, and the structure 302 supported by the plurality of girders 230. And a plurality of footboards 140 arranged in the horizontal direction (in the direction of arrow X in the figure) from the side toward the structure 304 side.

  According to the transfer corridor 320 according to the present embodiment, the transfer corridor 320 follows the variation in the distance between the fulcrums on both sides of the transfer corridor 320 even though the transfer corridor 320 is joined to the structure 302 and the structure 304. Can be deformed. Moreover, compared with the case where the corridor 320 is structurally cut off from one of the structures 302 and 304, the total amount of relative displacement of the corridor 320 with respect to the structures 302 and 304 at the time of the earthquake is about half. Can be suppressed.

  In each of the above embodiments, one of the pair of structures is a seismic isolation structure. However, both of the pair of structures may be non-seismic isolation structures, and both the pair of structures are exempted. It may be a seismic structure. In addition, various modifications such as applying the present invention to the stairs passing through the seismic isolation layer of one building are possible.

  In each of the above embodiments, the staircase 20, the slope 120, the landing 220, and the passageway 320 are joined to a pair of structures. However, this joining may be a pin joint as described above, or a rigid joint. It is good. Furthermore, it is not essential to provide a pantograph mechanism in the girders 30 and 230, and a bellows mechanism or the like may be provided instead.

  Moreover, in each said embodiment, although the stairs 20, the slope 120, and the landing 220 were used for the station building, you may use for other buildings, such as a building.

10 base-isolated buildings, 11 tracks, 12 homes (structures), 13 frames, 14 upper floors (structures), 15 base isolation devices, 20 stairs (passage facilities), 30 digits, 32 pantograph mechanisms, 32X, 32V connection Body, 33 Hinge (node), 34 Lower joint, 34A Gusset plate, 34B Connecting pin, 34C, 34D Sleeve, 35 Hinge (node), 36 Upper joint, 36A Gusset plate, 36B Connecting pin, 36C, 36D Sleeve, 37 Hinge, 38, 39 Connecting pin, 40 Tread plate, 40A Tread surface, 40B Kick-up, 321, 322, 323 Structural material, 321A, 321B, 322A, 322B Plate material, 321S, 322S, 321R, 322R, 323S, 323S 'Sleeve, 321C, 322C Notch, 321D, 322D Stepped portion 100 base-isolated building, 120 slope (passage facility), 140 tread board, 200 base-isolated building, 202 upper stairs (structure), 204 lower stairs (structure), 220 landing (passage facility), 230 digits, 234, 236 Fixed part, 300 base-isolated building, 302, 304 structure, 306 base-isolated device, 320 crossing corridor (passage facility)

Claims (4)

A passage facility comprising a girder having one end joined to one of the pair of structures and the other end joined to the other of the pair of structures, and a footboard supported by the girder,
The girder is composed of a plurality of structural members, and is configured such that a mountain fold node and a valley fold node are repeated from one end to the other, and the bending angle of the node is variable. ,
The passage plate is divided into a plurality of passage facilities. The girder is configured as a pantograph mechanism in which a connection body formed by crossing and connecting a pair of the structural members is a plurality of articulations,
The passage facility according to claim 1, wherein each of the footboards divided into a plurality of parts is supported by a node where the pair of structural members of the coupling body intersect. One of the pair of structures is a non-seismic isolation structure, and the other of the pair of structures is a seismic isolation structure arranged on the upper side of the one. Item 3. The passage facility according to item 2. The passage facility according to any one of claims 1 to 3, wherein the passage facility is one of a stairs, a slope, a landing, and a passageway.

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