JP5725551B2 - Safety device for joints in expansion joint floors - Google Patents

Description

  The present invention relates to a safety device for a joint portion in a seismic isolation expansion joint floor used for a pedestrian or a roadway.

  The present invention provides a joint device for a seismic isolation expansion joint floor, in which an expansion floor cover material absorbs a deformation generated between a building and a building at the time of an earthquake, and the deformation between the building and the building is caused by an earthquake. It is intended to provide a joint device in which the top end of one side of the expansion floor covering material does not protrude on the floor surface, and the present invention is a deformation between buildings due to an earthquake. Even if the expansion floor cover rides horizontally on the floor surface or the tip of one side protrudes on the floor surface, the joint area elastic body will be the step between the expansion floor cover material and the floor surface. It is intended to provide a joint safety device that can reliably cover and ensure safe passage of pedestrians and vehicles.

  In addition, in the present invention, when one side or both ends of the expansion joint floor covering material rides on the floor surface between the buildings due to deformation between the buildings due to the earthquake, or when the expansion joint portion expands. If there is a gap in the expansion joint floor cover, install the floor joint safety device of the present invention on one side or both ends of the expansion joint floor cover to flatten the expansion joint including the expansion joint floor cover. It is intended to provide a safety device for a joint part of a seismic isolation expansion joint floor that can be easily repaired to a shape.

  In a base-isolated building, an architectural response to the large deformation of the building during an earthquake is the most important issue. This large deformation occurs between the ground and the building, and it is necessary to secure a clearance corresponding to the mutual movement between the base-isolated building and the non-base-isolated building that occurs in this case.

  In other words, the seismic isolation expansion joint floor is the most important part of the approach to the building on the flow line used for people and cars to enter and leave the building from the outside of the building and can cope with the mutual movement between the buildings. Seismic isolation expansion joint floor is required.

Therefore, in recent buildings, the clearance between the seismic isolation building and the non-base isolation building tends to be wider than before due to the increase in the number of buildings and the adoption of the base isolation structure. However, if the clearance is increased, the expansion floor covering material mounted on the clearance becomes large and wide, and the expansion joint floor covering material slides between the seismic isolation building and the non-base isolation building. There is a need for a structure having a gap, ie, a large range of motion.

Regarding the above-described expansion joint floor cover having a large movable range, its joints, and the sliding structure of the cover material, for example, the invention of Japanese Patent Laid-Open No. 2003-129576 (hereinafter referred to as Patent Document 1) is disclosed. Has been.

And the invention of the above-mentioned patent document 1 has a configuration in which the expansion joint floor cover material is covered with a covering surface portion (cover plate) in a gap portion that slides between the frames of the base-isolated building and the non-base-isolated building. Are disclosed.

  However, as in the invention of Patent Document 1, in the configuration in which the movable space generated between the expansion joint floor cover material and the floor surface is closed by the covering surface portion (cover plate), the cover plate of the covering surface is covered. The cover plate of the covering surface part jumps up from the floor surface as shown in FIG. 5B (reference numeral 1) due to the shaking at the time of the earthquake, or the storage part 5 of the expansion floor covering material is shown in FIG. Since it appears as a gap having a step as shown in the reference 1), there is a great structural defect that injures pedestrians and evacuees when the earthquake continues to shake.

In addition, when the shaking due to the earthquake was stopped, the expansion joint floor cover material had the cover plate cover plate jumped upward from the floor surface as shown in FIGS. 5B and 5C (reference numeral 1). If it stops in a state and protrudes on the floor surface, or the storage part of the expansion floor cover material remains as a gap with a step, and if this part is not repaired and repaired, the passage of pedestrians and cars Will be disturbed.

Even in this case, the seismic isolated building and the non-isolated building itself are not damaged by the expansion joint, and the expansion joint floor, which is an important approach to the building, needs to be repaired and repaired promptly. When one side or both ends of the expansion joint floor covering material rides on the floor between the buildings and creates a large level difference, the expansion joint floor covering material is applied to one side or both end portions of the expansion joint floor covering material as shown in the present invention. As a result, it is necessary to implement a joint safety device for seismic isolation expansion joint floor that can easily repair and repair the expansion joint part including the expansion joint floor cover material into a flat shape by installing a floor joint device. It has become.

Thus, as a conventional device for this type of expansion joint floor, even if the end of the joint plate protrudes on the floor surface, the floor can be used safely without a pedestrian colliding with the end of the joint plate. Japanese Patent Laid-Open No. 2000-328684 (hereinafter referred to as Patent Document 2) for the purpose of providing a joint device is disclosed.

As shown in FIGS. 8 to 9A and 9B, the expansion joint 50 disclosed in the invention of Patent Document 2 is a floor surface of left and right buildings 52a and 52b built through joint portions 51. 53a and 53b are provided with a pair of recesses 54a and 54b formed so as to open to the joint 51, and the opposite joint portions fixed to the pair of recesses 54a and 54b are inclined guide surfaces 55a and 55b. A pair of fixing brackets 56a and 56b are provided.

A joint plate 57 that covers a portion of the pair of fixing brackets 56a, 56b except for the guide surfaces 55a, 55b, and hinges 58a, 58b, 58c,. Protective bodies 59a, 59b formed of an elastic material such as rubber covering the guide surfaces 55a, 55b of the pair of fixing brackets 56a, 56b attached so as to be rotatable, and the pair of fixing brackets 56a, 56b Alternatively, the support rod 60 attached to the center portion of the joint plate is pivotally supported by the joint plate 57 so as to be vertically movable on the center pivot support portion attached to the floor of the left and right buildings 52a and 52b. Further, at least two or more central maintenance devices 61 constitute a floor joint device.

In the invention of Patent Document 2, as shown in FIG. 9, the joint plate 57 and the protectors 58a and 58b at both ends cover the joint portion 51 and the pair of fixing brackets 56a and 56b at the normal time, and the upper surface is left and right. The floor surfaces 53a and 53b are set so as to be substantially flush with the upper surfaces of the floor surfaces 53a and 53b.

Thus, when the left and right buildings 52a and 52b sway in different directions due to the earthquake and the size of the joint portion 51 becomes narrow as shown in FIG. 9B, the joint plate 57 is moved by the plurality of central maintenance devices 61. The lower surfaces of both ends slide and move upward along the guide surfaces 55a and 55b of the pair of fixing brackets 56a and 56b, while the both ends are floor surfaces 53a and 53b of the left and right buildings 52a and 52b. Get on top. At this time, the pair of protective bodies 58a, 58b are rotated by the pivot pins of the hinges 58a, 58b, 58c..., And the front ends of the pair of protective bodies 59a, 59b are the floor surfaces of the left and right buildings 52a, 52b. It will be in the state supported on 53a, 53b.

Further, when the dimensions of the joint portion 51 of the left and right buildings 52a and 52b are wide as shown in FIG. 9C, the joint plate 57 is positioned at both ends in a state where the joint plate 57 is normally positioned at the central portion by a plurality of central maintenance devices 61. Slidably move on the pair of fixing brackets 56a and 56b, and the tip ends of the pair of protective bodies 59a and 59b on both ends are rotated in contact with the guide surfaces 55a and 55b of the pair of fixing brackets 56a and 56b. Slide while moving.

Thus, looking at the state of FIGS. 9B and 9C in Patent Document 2, the state of FIG. 9B shows that the joint plate 57 slides upward with the earthquake shakes subsided. Both ends are on the floors 53a and 53b of the left and right buildings 52a and 52b, and the state of FIG. 9C is a state in which the joint plate 57 has a pair of recesses in a state in which the shaking of the earthquake is subsided. 54a and 54b are formed in the gap between the left and right sides, and the steps formed on both sides of the joint plate 57 and the pair of rotated protective bodies 59a and 59b are also formed into triangular projections, respectively. Not only is it an obstacle for people and cars, it is very dangerous.

In addition, the building where the expansion joint 50 is installed is considered to have a high probability of conducting economic activities without damaging the right and left buildings even immediately after the earthquake, but the expansion joint 50 is an important approach to the building. This is not only very dangerous in the decoction, but considering that aftershocks with a seismic intensity of about 3 to 4 will continue in the months immediately after the big earthquake, in the state of Fig. 8 (B) and (C) When an aftershock occurs, the expansion joint 50 part for the evacuees will swing in the state shown in FIGS. 9B and 9C and become a very dangerous place. Eventually, the building manager blocks the passage of pedestrians and cars. Thus, the restoration work must be urgent.

In Patent Document 2, in addition to the embodiment shown in FIGS. 8 and 9, the protective bodies 59a and 59b at both ends of the joint plate 57 are fixedly attached as shown in FIG. As shown in (A) and (B), one side of the joint plate 57 is supported by a joint plate support fitting 63 attached to a support recess 62 formed on the floor surface 53a on the joint part side of the building 52a so as to be vertically movable. However, in both cases, the joint plate 57 slides upward in a state where the shaking of the earthquake is subsided, and both ends ride on the floor surfaces 53a, 53b of the left and right buildings 52a, 52b. When an aftershock occurs, the expansion joint 50 will swing in the state shown in FIG. 10 or FIG. Big drawback referred to the put away there.

JP 2003-129576 A JP 2000-328664 A

  In conventional joint devices for expansion joint floors, the joint plate slides upward when the shaking of the earthquake has subsided when it swings so that the clearance between the seismic isolation building and the non-base isolation building is reduced. Move to create a state where both ends have climbed on the floors of the left and right buildings, and the joint plate fits in a pair of recesses and the recesses on the left and right are formed with the earthquake shakes Therefore, the steps formed on both sides of the joint plate and the pivoted joint protectors become projections, which are not only an obstacle for pedestrians and vehicles, but also very dangerous.

In addition, buildings with expansion joint floors are considered to have a high probability of conducting economic activities without damaging the left and right buildings even after a major earthquake, but expansion joint floors are an important approach to the buildings. Not only is this part very dangerous in the decoration, but assuming that aftershocks with a seismic intensity of about 3 to 4 will continue for a few months immediately after a major earthquake, the expansion joint part for evacuees when an aftershock occurs The joint plate slides upward and swings with both ends riding on the floors of the left and right buildings, or the joint plate moves within a pair of recesses and forms a recess gap on the left and right. It will be a very dangerous place.

Thus, the present invention provides a joint device for a seismic isolation expansion joint floor, in which the expansion floor cover material is absorbed by a building caused by an earthquake by absorbing deformation occurring between the building and the building at the time of the earthquake at the joint portion of the expansion joint. When the joint device of the expansion joint continues to sway due to an earthquake, providing a joint device that climbs horizontally on the floor due to deformation between buildings, or the tip of one side does not protrude on the floor surface. In this case, the expansion joint floor covering material and the joint structure member surface can be kept flat, and a safety device for the joint part that can secure safe evacuation for pedestrians is provided.

In addition, the present invention provides an expansion floor even if there is a large deformation between buildings due to an earthquake, and the expansion floor cover rides horizontally on the floor surface, or the tip on one side protrudes on the floor surface. Provided is a joint safety device in which a step elastic portion between the cover and the floor surface is reliably covered by a joint joint elastic body to ensure safe passage of pedestrians and vehicles.

Furthermore, the present invention provides an expansion joint floor covering material in the case where one side or both ends of the expansion joint floor covering material rides on the floor surface between the buildings due to deformation between buildings due to an earthquake, thereby creating a large step. By installing the floor joint safety device of the present invention on one side or both ends of the floor, the joint device for the seismic isolation joint can be easily repaired and repaired to the flat shape of the expansion joint including the expansion joint floor cover material. It is to provide.

  The present invention relates to a floor expansion joint for closing a clearance provided between a building and a building, and the upper surface between the building and the building includes a pair of recess-shaped surfaces, and the pair of recesses A metal base plate is laid on each of the shape surfaces, and each of the metal base plates constitutes an expansion floor sliding portion in which a rising oblique portion and a bellows receiving portion are installed at the rising portion of the concave shape surface, An expansion joint floor for closing the clearance is installed on a metal base plate laid on the concave shape surface, and a rubber system and a resin system that are in contact with the bellows receiving part at both ends of the expansion joint floor A stretchable joint bellows made of material is arranged, and the joint bellows protrusion is an expansion floor. Can be expanded and contracted between the bellows receiving parts to absorb shaking between buildings, and the joint bellows can be rotated with respect to both ends of the expansion joint floor via hinges at the other end Each of the joint bellows has a slider that slides along the rising portion of the metal base plate and rotates the hinge. The bellows for joints rotate around the step between the expansion floor cover and the floor surface even when the expansion floor cover rides horizontally on the floor surface or the tip of one side protrudes on the floor surface. It is intended to provide a joint joint safety device for an expansion joint floor that can be inclined to reliably cover the step between the expansion floor and the floor surface.

Further, in the present invention, in the floor expansion joint for closing the clearance provided between the building and the building, the upper surface between the building and the building is configured with a concave shape surface having a different shape, respectively. An L-shaped metal base plate is laid on the concave-shaped surface on one side, and a rising oblique portion and a bellows receiving portion are installed on the rising portion of the concave-shaped surface on the other metal base plate, and the L-shaped metal base plate An expansion floor is installed between a metal base plate having a rising slope and a bellows receiving portion, and one side of the expanded expansion joint floor is an L-shaped metal base plate side with a plurality of wing hinges and bolts with springs for wings. The other side of the laid expansion joint floor is pivotally fixed. A rising oblique part and a bellows receiving part are installed and slidably laid on a metal base plate having an expansion floor slide sliding part, and the slidable side of the expansion joint floor is in contact with the bellows receiving part Elastic joint bellows made of rubber and resin materials are arranged, and the joint bellows protrusion can be stretched between the expansion floor and the bellows receiving part to absorb the shaking between buildings Further, the joint bellows is respectively installed at the other end so as to be rotatable with respect to both ends of the expansion joint floor via hinges, and the metal base plate rises at the lower part of the joint bellows. An expansion floor cover that has a slider that slides along the section and rotates the hinge and that is greatly deformed between buildings due to an earthquake. The bellows for joints rotate and incline in the stepped part between the expansion floor cover and the floor surface even when it rides horizontally on the floor surface or the tip of one side protrudes on the floor surface. It is an object of the present invention to provide a joint safety device for an expansion joint floor in which an elastic body can reliably cover the step between the expansion floor and the floor surface.

Furthermore, the present invention can also be used for an existing expansion joint as a joint member for a floor expansion joint for closing the clearance provided between the buildings between the buildings, and the joint member has a rising oblique portion and a bellows. Metal base plate having an expansion floor slide sliding portion provided with a receiving portion, a bellows fixing frame that can be attached to an end portion of the expansion joint floor, and a rubber system and a resin system provided at the end portion of the expansion joint floor The present invention provides a joint member for repairing a floor expansion, comprising a joint bellows which can be stretched and made of a material and which can be installed on an end of an expansion floor so as to be rotatable with a hinge.

Thus, the present invention provides a joint device for a seismic isolation expansion joint floor, in which the expansion floor cover material is absorbed by a building caused by an earthquake by absorbing deformation occurring between the building and the building at the time of the earthquake at the joint portion of the expansion joint. It is possible to provide a safety device for joints that can be ridden horizontally on the floor surface due to deformation between buildings, and the tip of one side does not protrude on the floor surface.

In addition, the present invention provides an expansion floor even if there is a large deformation between buildings due to an earthquake, and the expansion floor cover rides horizontally on the floor surface, or the tip on one side protrudes on the floor surface. It is an object of the present invention to provide a joint safety device capable of ensuring the safe passage of a pedestrian or a vehicle by reliably covering the stepped portion between the cover and the floor surface with the elastic body of the joint bellows.

Furthermore, the present invention provides an expansion joint floor covering material in the case where one side or both ends of the expansion joint floor covering material rides on the floor surface between the buildings due to deformation between buildings due to an earthquake, thereby creating a large step. By installing the floor joint device of the present invention on one side or both ends of the floor, the joint joint safety device of the seismic isolation joint floor that can easily repair and repair the expansion joint part including the expansion joint floor cover material into a flat shape. Could be provided.

It is a top view which shows embodiment of this invention. (A) It is aa sectional drawing of FIG. (B) It is sectional drawing explaining the operation | movement of FIG. 2 (A). (C) It is sectional drawing explaining other operation | movement of FIG.2 (C). It is sectional drawing explaining the maximum movable operation | movement of FIG. (A) It is expansion explanatory drawing of the bellows type joint part used for FIG. (B) It is operation | movement explanatory drawing of the bellows type joint part used for FIG. (C) It is another operation | movement explanatory drawing of the bellows type joint part used for FIG. It is an embodiment figure explaining the example of the present invention. (A) It is bb sectional drawing of FIG. (B) It is sectional drawing explaining the operation | movement of FIG. 6 (A). (C) It is sectional drawing explaining other operation | movement of FIG. 6 (A). It is sectional drawing explaining the maximum movable operation | movement of FIG. It is a top view explaining a prior art example. (A) It is cc sectional drawing of FIG. FIG. 10B is a cross-sectional view illustrating the operation of FIG. FIG. 9C is a cross-sectional view illustrating another operation of FIG. It is sectional drawing explaining the prior art example from which operation | movement differs. (A) It is sectional drawing explaining the prior art example from which operation | movement differs. FIG. 11B is a cross-sectional view illustrating the operation of FIG.

  In conventional joint devices for expansion joint floors, the joint plate slides upward when the shaking of the earthquake has subsided when it swings so that the clearance between the seismic isolation building and the non-base isolation building is reduced. Move to create a state where both ends have climbed on the floors of the left and right buildings, and the joint plate fits in a pair of recesses and the recesses on the left and right are formed with the earthquake shakes Therefore, the steps formed on both sides of the joint plate and the pivoted joint protectors become projections, which are not only an obstacle for pedestrians and vehicles, but also very dangerous.

In addition, buildings with expansion joint floors are considered to have a high probability of conducting economic activities without damaging the left and right buildings even after a major earthquake, but expansion joint floors are an important approach to the buildings. Not only is this part very dangerous in the decoration, but assuming that aftershocks with a seismic intensity of about 3 to 4 will continue for a few months immediately after a major earthquake, the expansion joint part for evacuees when an aftershock occurs The joint plate slides upward and swings with both ends riding on the floors of the left and right buildings, or the joint plate moves within a pair of recesses and forms a recess gap on the left and right. It will be a very dangerous place.

  In the case of damage to the expansion joint floor investigated by the applicant in the previous earthquake, about 80% slided above the joint plate and both ends got on the floors of the left and right buildings. , Creating a step and a bump with one side riding on the floor of the building.

Thus, the present invention provides a joint device for a seismic isolation expansion joint floor, in which the expansion floor cover material is absorbed by a building caused by an earthquake by absorbing deformation occurring between the building and the building at the time of the earthquake at the joint portion of the expansion joint. When the joint device of the expansion joint continues to sway due to an earthquake, providing a joint device that climbs horizontally on the floor due to deformation between buildings, or the tip of one side does not protrude on the floor surface. Also, the expansion joint floor covering material and the joint structure member surface can be kept flat, and a joint device that can secure safe evacuation for pedestrians is provided.

In addition, the present invention provides an expansion floor even if there is a large deformation between buildings due to an earthquake, and the expansion floor cover rides horizontally on the floor surface, or the tip on one side protrudes on the floor surface. Provided is a joint safety device in which a step elastic portion between the cover and the floor surface is reliably covered by a joint joint elastic body to ensure safe passage of pedestrians and vehicles.

Furthermore, the present invention provides an expansion joint floor covering material in the case where one side or both ends of the expansion joint floor covering material rides on the floor surface between the buildings due to deformation between buildings due to an earthquake, thereby creating a large step. By providing the floor joint device of the present invention on one side or both ends of the floor, an expansion joint floor including the expansion joint floor cover material can be easily repaired and repaired into a flat shape, and a seismic isolation joint joint device is provided. Is.

  The present invention relates to a floor expansion joint for closing a clearance provided between a building and a building, and the upper surface between the building and the building includes a pair of recess-shaped surfaces, and the pair of recesses A metal base plate is laid on each of the shape surfaces, and each of the metal base plates constitutes an expansion floor sliding portion in which a rising oblique portion and a bellows receiving portion are installed at the rising portion of the concave shape surface, An expansion joint floor for closing the clearance is installed on a metal base plate laid on the concave shape surface, and a rubber system and a resin system that are in contact with the bellows receiving part at both ends of the expansion joint floor A stretchable joint bellows made of material is arranged, and the joint bellows protrusion is an expansion floor. Can be expanded and contracted between the bellows receiving parts to absorb shaking between buildings, and the joint bellows can be rotated with respect to both ends of the expansion joint floor via hinges at the other end Each of the joint bellows has a slider that slides along the rising portion of the metal base plate and rotates the hinge. The bellows for joints rotate around the step between the expansion floor cover and the floor surface even when the expansion floor cover rides horizontally on the floor surface or the tip of one side protrudes on the floor surface. It is preferable that the threaded bellows elastic body can reliably cover the step between the expansion floor and the floor surface.

The present invention provides a floor expansion joint for closing a clearance provided between a building and a building, and the upper surface between the building and the building is formed with a concave shape surface having a different shape, and the one side An L-shaped metal base plate is laid on the recess-shaped surface of the metal plate, and a rising slope and a bellows receiving portion are installed on the other metal base plate at the rising portion of the recess-shaped surface. An expansion floor is installed between the base plate and the metal base plate having the bellows receiving portion, and one side of the installed expansion joint floor is rotated by a plurality of wing hinges and bolts with wing springs on the L-shaped metal base plate side. The other side of the erected expansion joint floor is upright. An inclined portion and a bellows receiving portion are installed and slidably laid on a metal base plate having an expansion floor slide sliding portion, and the slidable side of the expansion joint floor is in contact with the bellows receiving portion. Elastic joint bellows made of rubber and resin materials are arranged, and the joint bellows protrusion can be stretched between the expansion floor and the bellows receiving part to absorb the shaking between buildings Further, the joint bellows is respectively installed at the other end so as to be rotatable with respect to both ends of the expansion joint floor via hinges, and the metal base plate rises at the lower part of the joint bellows. It has a slider that slides along the part and rotates the hinge. Even if the tip of one side protrudes on the floor surface, the joint bellows rotates and tilts the stepped portion between the expansion floor cover and the floor surface, and the screw bellows elastic body It is preferable to reliably cover the step between the expansion floor and the floor surface.

In addition, the present invention has an expansion floor slide sliding portion in which the rising oblique portion and the bellows receiving portion are installed as a joint mechanism for a floor expansion joint for closing a clearance provided between the buildings between the buildings. A metal base plate, a bellows fixing frame that can be attached to the end of the expansion joint floor, and a stretchable, rubber-based and resin-based material provided at the end of the expansion joint floor. It is preferable that the joint bellows that can be installed at the end of the expansion floor as a set of parts is used as a joint member for repairing the floor expansion.

  The joint bellows used on both ends or one side of the expansion joint floor is a shrinkable bellows made of a rubber-based or resin-based material, and extrudes materials such as chloroprene rubber, urethane rubber, fluororubber, and vinyl chloride. The joint bellows protrusion has one or a plurality of contraction holes drilled in the longitudinal direction to allow expansion and contraction, and the joint bellows is an expansion joint floor surface. The present invention can be implemented by providing a non-slip-shaped groove on the surface, and providing a bellows attachment part formed for attachment to the end of the expansion floor.

Accordingly, the present invention provides a joint device for a base-isolated expansion joint floor, in which the expansion floor covering material is absorbed between the building and the building due to the earthquake by absorbing the deformation generated between the building and the building during the earthquake at the joint portion of the expansion joint. It is possible to provide a joint device that can be ridden horizontally on the floor surface due to the deformation of the above, or the one end portion does not protrude on the floor surface.

In addition, the present invention provides an expansion floor even if there is a large deformation between buildings due to an earthquake, and the expansion floor cover rides horizontally on the floor surface, or the tip on one side protrudes on the floor surface. Provided is a joint safety device in which a step elastic portion between the cover and the floor surface is reliably covered by a joint joint elastic body to ensure safe passage of pedestrians and vehicles.

Further, the present invention provides the joint device for the expansion joint, which can keep the expansion joint floor cover material and the joint structure member surface flat even when shaking due to an earthquake continues, and can secure a safe evacuation for pedestrians. The device could be provided.

And this invention, when one side and both ends of the expansion joint floor covering material run on the floor surface between the buildings due to deformation between the buildings due to the earthquake, the expansion joint floor covering material is formed. By installing and exchanging the floor joint device of the present invention on one side or both ends of the floor, the joint device for the seismic isolation joint can be easily repaired and repaired into a flat shape including the expansion joint floor cover material. It is possible to provide.

  1 to 4 are diagrams for explaining the first embodiment. FIG. 1 is a plan view, FIG. 2A is a cross-sectional view taken along the line aa in FIG. 1, and FIGS. 3 is a cross-sectional view illustrating the maximum movable operation of FIG. 2, and FIG. 4 is an operation explanatory diagram of the bellows joint.

  1 to 4, the expansion joint 1 has a pair of recesses formed on the floors 4 a and 4 b between the left and right buildings 3 a and 3 b built via the clearance 2 so as to open the clearance 2. Surfaces 5a and 5b are provided, and metal base plates 6a and 6b are laid and fixed between the pair of concave-shaped surfaces 5a and 5b, respectively.

  The pair of metal base plates 6a and 6b are provided at the rising portions of the recess-shaped surfaces 5a and 5b, respectively, and the expansion floor sliding portions 9a and 9b provided with rising inclined portions 7a and 7b and bellows receiving portions 8a and 8b. An expansion joint floor 10 is installed on the metal base plates 6a and 6b laid on the pair of recess-shaped surfaces 5a and 5b to close the clearance 2, and both ends of the expansion joint floor 10 are provided. In FIG. 1, stretchable bellows 11a and 11b made of rubber and resin are provided on the bellows receiving portions 8a and 8b, respectively, as hinges 12 (indicated by 12a, 12b, 12c... In FIG. 1). Are provided so as to be able to rotate respectively.

  In addition, 13a, 13b, 13c ... (shown in FIG. 1) is a central position maintaining mechanism of the expansion joint floor 10, and the central position maintaining mechanisms 13a, 13b, 13c,. The pantograph format is used.

Thus, in Example 1, the expansion joint floor of the expansion joint 1 is covered with the expansion joint floor 10 and the joint bellows 11a and 11b as shown in FIG. 10 is installed such that the upper surface is substantially flush with the upper surfaces of the left and right floor surfaces 4a, 4b.

When the left and right buildings 3a and 3b sway in different directions due to the earthquake and the size of the joint 2 is reduced as shown in FIG. 2B, the joint bellows 11a and 11b are moved to the bellows receiving portions 8a and 8b. The expansion joint floor 10 is held on the pair of recess-shaped surfaces 5a and 5b without being projected on the floor surfaces 4a and 4b because the expansion joint floor 10 is brought into contact with and contracted. The bellows 11a, 11b for use and the expansion joint floor 10 are maintained in a flat shape, that is, a flat shape.

When the dimensions of the expansion 1 are wide as shown in FIG. 2C in the left and right buildings 3a and 3b, the expansion joint floor 10 has a plurality of central position maintaining mechanisms 12a, 12b, 12c. 1)), the joint bellows 11a, 11b at both ends are slid and moved to form a gap between the bellows receiving portions 8a, 8b and the joint bellows 11a, 11b. The gaps are raised from the bottom portions 14a and 14b through the rising inclined portions 7a and 7b, respectively, and cannot be a large step.

  Next, FIG. 3 is a cross-sectional view for explaining the maximum movable operation of FIG. 2, and the deformation between the building 3a and the building 3b due to an earthquake is large, and the expansion joint floor 10 rides horizontally on the floor surfaces 4a and 4b. Even if the tip of one side protrudes on the floor surface, the elastic parts of the joint bellows 11a and 11b reliably cover the stepped portion between the expansion joint floor 10 and the floor surfaces 4a and 4b as shown in FIG. Thus, safe passage of pedestrians and vehicles can be ensured. The rotation of the joint bellows 11a, 11b is hinges 12, 12 supporting the joint bellows 11a, 11b, and the joint bellows 11a, The slider 15 provided below 11b is operated by sliding the rising inclined portions 7a and 7b and the bellows receiving portions 8a and 8b, respectively.

4A is an enlarged view of the normal joint bellows 11a of FIG. 2A, and FIG. 4B is a contracted joint bellows of FIG. 2B. 4A and 4B, 4a is a floor surface, 6a is a metal base plate, 7a is a rising slant portion, 8a is a bellows receiving portion, 14a is a bottom portion, and 16a is a metal base plate. The end frame 16a is flush with the floor surface 4a.

Further, the joint bellows 11a has a non-slip-shaped groove 19 on the upper surface, and the joint bellows 11a is detachably attached to the end of the expansion floor 10 through hinges 12a, 12b, 12c. It has been. When, for example, five compression holes 18 each having a width of 10 mm are drilled in the joint bellows 11a, the joint bellows 11a can be expanded and contracted as shown in FIG. On both sides of 11a and 11b, a movement of 50 mm can be allowed.

  FIG. 4 (C) shows a case where the variable amount of the building 3a and the building 3c has moved greatly and the expansion floor 10 has run on the floor surface 4a. In this case, the joint bellows 11a is rotated. It is possible to move and cover the step between the expansion joint floor 10 and the floor surface 4a.

Thus, in Example 1, the floor expansion joint 1 for closing the clearance 2 provided between the buildings 3 and 3b is provided with a pair of upper surfaces between the buildings 3a and 3b. Concave-shaped surfaces 5a and 5b are formed, and metal base plates 6a and 6b are laid on the pair of concave-shaped surfaces 5a and 5b, respectively. The metal base plates 6a and 6b are respectively provided with the concave-shaped surfaces 5a and 5b. The sliding portions 9a and 9b of the expansion floor 10 in which the rising inclined portions 7a and 7b and the bellows receiving portions 8a and 8b are installed are formed at the rising portion of the metal, and are made of metal laid on the pair of concave-shaped surfaces 5a and 5b. An expansion joint floor 10 for closing the clearance 2 is installed on the base plates 6a and 6b, and the expansion joint floor 10 Stretchable joint bellows 11a and 11b made of rubber and resin materials that are in contact with the bellows receiving portions 8a and 8b are disposed at the ends, and the protruding portions of the joint bellows 11a and 11b are expansion floors. 10 and the bellows receiving portions 8a and 8b can be expanded and contracted to absorb the vibration between the buildings 3a and 3b and the building, and the joint bellows 11a and 11b are hinges 12a and 12b at the other end. 12c... Are respectively pivotally mounted to both ends of the expansion joint floor 10 through the lower part of the joint bellows 11a11b and slid along the rising oblique part 7a7b of the metal base plate. It has a slider 15 that rotates the hinges 12a, 12b, 12c... And the deformation between the building 3a and the building 3b due to the earthquake is greatly extracted. Even when the expansion floor 10 rides horizontally on the floor surfaces 4a and 4b, or when the tip of one side protrudes on the floor surface 4a, the stepped portion between the expansion floor 10 and the floor surface 4a is used as the joint bellows 11a. Provides a joint joint safety device for an expansion joint floor, in which the elastic body of the joint bellows 11a, 11b can reliably cover the step between the expansion floor 10 and the floor surfaces 4a, 4b. Is.

  FIGS. 5 to 7 illustrate the second embodiment. FIG. 5 is a diagram illustrating the second embodiment. FIG. 6A is a cross-sectional view taken along the line bb in FIG. , (C) are sectional views for explaining the operation. 5 to 7, the expansion joint 1 includes a recessed surface 5a formed on the floor surfaces 4a and 4b between the left and right buildings 3a and 3b built via the clearance 2 so as to open the clearance 2. 5b is provided, and a metal base plate 20 and an L-shaped base plate 21 are laid and fixed between the recess-shaped surfaces 5a and 5b, respectively.

  Then, in the floor expansion joint 1 for closing the clearance 2 provided between the buildings 3a and 3b, the upper surface between the buildings 3a and 3b has different concave shapes 5a. 5b, an L-shaped base plate 21 is laid on the concave-shaped surface 5b on one side, and a rising inclined portion 7a and a bellows receiving portion 8a are installed on the other metal base plate 20 at the rising portion of the concave-shaped surface. The expansion floor 10 is installed between the L-shaped base plate 21, the recess-shaped surfaces 5 a and 5 b having the rising inclined portion 7 a and the bellows receiving portion 8 a, and one side of the installed expansion joint floor 10 is the L-shaped base plate 21 side. A plurality of wing hinges 22 (the examples shown in FIGS. 5 and 6 are hinges) and a wing spring-loaded The other side of the installed expansion joint floor is mounted on a metal base plate 20 having a rising inclined portion 7a and a bellows receiving portion 8a and having an expansion floor slide sliding portion 9a. A slidable side of the expansion joint floor 10 is provided with an expandable joint bellows 11a made of a rubber-based material and a resin-based material.

Therefore, when the left and right buildings 3a and 3b swing in different directions due to the earthquake and the size of the joint 2 becomes narrow as shown in FIG. 6B, the joint bellows 11a abuts against the bellows receiving portion 8a and contracts. Therefore, the expansion joint floor 10 is held on the concave shape surfaces 5a and 5b without being projected on the floor surface 4a, and thus the floor surfaces 4a and 4b, the joint bellows 11a, and the expansion joint. The floor 10 is maintained in a flat shape, that is, a flat shape.

In addition, when the dimensions of the expansion 1 are wide as shown in FIG. 6C in the left and right buildings 3a and 3b, since the expansion joint floor 10 is fixed on one side, The joint bellows 11a is slid to form gaps between the bellows receiving portion 8a and the joint bellows 11a. The gaps are raised from the bottom portion 13a via the rising inclined portions 7a, and the large step is It can't be.

  FIG. 7 shows a case where the variable amount of the building 3a and the building 3c moves greatly and the expansion floor 10 has ridden on the floor surface 4a. In this case, the joint bellows 11a rotates. The step between the expansion joint floor 10 and the floor surface 4a can be covered.

  Thus, in Example 2, the floor expansion joint 1 for closing the clearance 2 provided between the buildings 3a and 3b has a shape on the upper surface between the buildings 3a and 3b. Are formed on one side of the recess-shaped surface 5b, and an L-shaped metal base plate 21 is laid on the one-side recess-shaped surface 5b, and the other metal base plate 6a rises at the rising portion of the recess-shaped surface. The expansion floor 10 is installed between the L-shaped metal base plate 21, the rising inclined portion 7a, and the metal base plate 6a having the bellows receiving portion 8a, and the expanded joint floor 10 is installed. One side is an L-shaped metal base plate 21 side and a plurality of wing hinges 22 and wing springs On the metal base plate 6a, which is fixed to be rotatable with a bolt, and the other side of the installed expansion joint floor 10 is provided with a rising inclined portion 7a and a bellows receiving portion 8a and having an expansion floor sliding portion 9a. The expansion joint floor 10 is slidably laid on the slidable side, and is provided with a stretchable joint bellows 11a made of a rubber-based or resin-based material that comes into contact with the bellows receiving portion 8a. The projecting portion 19a of the joint bellows 11a can be expanded and contracted between the expansion floor 10 and the bellows receiving portion 11a so as to absorb the shaking between the building 3a and the building 3b, and the joint bellows 11a is at the other end. The joint bellows are installed so as to be rotatable with respect to both ends of the expansion joint floor via hinges. In the lower part, there is a slider 15 that slides along the rising part of the metal base plate and rotates the hinge 12. The expansion floor 10 has a large deformation between the building 3a and the building 3b due to an earthquake. The joint bellows 11a rotates and inclines at the step between the expansion floor 10 and the floor surfaces 4a and 4b even when it rides horizontally on the surfaces 4a and 4b or the tip of one side protrudes on the floor surface. Thus, the elastic body of the joint bellows 11a can reliably cover the step between the expansion floor 10 and the floor surfaces 4a and 4b.

  Accordingly, the present invention provides a joint device for a base-isolated expansion joint floor, in which the expansion floor covering material is absorbed between the building and the building due to the earthquake by absorbing the deformation generated between the building and the building during the earthquake at the joint portion of the expansion joint. It is possible to provide a joint device that can be ridden horizontally on the floor surface due to the deformation of the above, or the one end portion does not protrude on the floor surface.

In addition, the present invention provides an expansion floor even if there is a large deformation between buildings due to an earthquake, and the expansion floor cover rides horizontally on the floor surface, or the tip on one side protrudes on the floor surface. Provided is a joint safety device in which a step elastic portion between the cover and the floor surface is reliably covered by a joint joint elastic body to ensure safe passage of pedestrians and vehicles.

Further, the present invention provides the joint device for the expansion joint, which can keep the expansion joint floor cover material and the joint structure member surface flat even when shaking due to an earthquake continues, and can secure a safe evacuation for pedestrians. The device could be provided.

And this invention, when one side and both ends of the expansion joint floor covering material run on the floor surface between the buildings due to deformation between the buildings due to the earthquake, the expansion joint floor covering material is formed. By installing and exchanging the floor joint device of the present invention on one side or both ends of the floor, the joint device for the seismic isolation joint can be easily repaired and repaired into a flat shape including the expansion joint floor cover material. It is possible to provide.

DESCRIPTION OF SYMBOLS 1 Expansion joint 2 Clearance 3a, 3b Building 4a, 4b Floor surface 5a, 5b Recessed shape surface 6a, 6b Metal base plate 7a, 7b Rising slope part 8a, 8b Bellows receiving part 9a, 9b Expansion floor sliding part 10 Expansion joint Floor 11a, 11b Joint bellows 12, 12a, 12b, 12c ... Hinge 13a, 13b, 13c ... Center position maintaining mechanism 14a, 14b Bottom 15 Slider 16a, 16b End frame 17 of metal base plate Bellows fixing frame 18 Compression hole 19 Non-slip groove 19 L-shaped metal base plate 20 Base plate 21 L-shaped base plate 22 Hinge for wing

Claims (1)

In the floor expansion joint for closing the clearance provided between the building and the building, the upper surface between the building and the building comprises a pair of concave shaped surfaces, and the pair of concave shaped surfaces A base plate made of metal is laid, and each of the metal base plates constitutes an expansion floor sliding portion in which a rising oblique portion and a bellows receiving portion are installed at the rising portion of the concave shape surface, An expansion joint floor for closing the clearance is laid on a metal base plate laid on the expansion joint floor, and both ends of the expansion joint floor are elastic and elastic materials made of rubber and resin. An optional joint bellows is arranged, and the projection of the joint bellows is the expansion floor and the bellows. It is possible to absorb the shaking between the building by extending and contracting between the receiving parts, and the joint bellows can be rotated with respect to both ends of the expansion joint floor via hinges at the other end Each of the bellows for joints has a slider that slides along the rising portion of the metal base plate and rotates the hinge at the lower part of the joint bellows. Even if the expansion floor rides horizontally on the floor surface or the tip of one side protrudes on the floor surface, the joint bellows rotates and tilts at the step between the expansion floor and the floor surface. The joint joint safety device for an expansion joint floor, wherein the joint bellows elastic body reliably covers a step between the expansion floor and the floor surface.