JP2008266897A - Pedestal cover structure of base-isolated building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pedestal cover structure of a base-isolated building capable of improving the design of its appearance without increasing the number of kinds of members by constituting a pedestal cover of the base-isolated building by a member having the same specifications as those of an external wall of the upper part building. <P>SOLUTION: This pedestal cover structure of the base-isolated building is constituted by arranging an end beam 13 having the same length and width as those of an upper part beam 12 constituting the upper part building 4 in an outer peripheral part of a pedestal 3 of a steel structure provided between the upper part building 4 of the steel structure and a lower part structure on the same module, attaching the same hardware 20a, 20b as hardware 20 for mounting a suspended wall panel attached to the upper part beam 12, and attaching a panel 19 having the same specifications as those of the suspended wall panel 19 on the hardware continuously with a first story external wall panel 17 in the upper part building 4. The upper part building 4 is constituted by arranging a base isolation member 2 having a rigid frame structure and composed of a sliding piece 2b and a receiving board 2a just below a column 10 and attaching the end beam 13 to a tip of a cantilever beam 11 to cover the receiving board 2a constituting the base isolation member 2 in a plane manner. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure of a gantry cover that covers a gantry that constitutes an upper structure of a base-isolated building, and more particularly to a gantry cover structure in which the gantry cover is configured with the same specifications as a hanging wall in an upper building.

  A base-isolated building has a plurality of base-isolating materials (for example, a slider in a sliding support type base-isolated device and the sliding member) on a substructure such as a foundation that follows the movement of the ground and does not move relative to the ground during an earthquake. Place the support plate on which the child is placed, and place a base on this base isolation material. The upper part (the part above the foundation rise of the reinforced concrete structure in the non-base isolation building) It is constructed and constructed. And the upper structure which consists of an upper building and a gantry at the time of an earthquake is comprised so that it may move relatively with respect to a ground or a substructure without following the movement of a ground or a substructure.

  In general, a base-isolated building in a steel-frame industrialized house is constructed by building the same upper building as a non-base-isolated building on a steel frame. Therefore, there is a problem in that the gantry and the seismic isolation material are opened without being covered by the outer wall or the foundation, which is not preferable in terms of appearance design.

  In order to solve the above problem, the technique of Patent Document 1 has been proposed. In this technology, a cover is hung from the building body side so as to cover the periphery of the gantry, and this cover improves the appearance design of the base-isolated building.

JP 2000-225942 A

  In the technique of Patent Document 1, the appearance of the building body is improved by covering the gantry with a cover suspended from the upper building, but this cover is different from the outer wall constituting the building. In particular, when a rising portion is provided on the foundation, the building's standing surface is composed of elements having three different textures: the outer wall of the upper building, the rising portion of the foundation, and the cover, so the appearance of the building becomes complicated. , There is a possibility that the designability is impaired. Moreover, there is a possibility that the variety of building members and the labor of construction increase, leading to an increase in cost.

  An object of the present invention is to provide a base cover structure for a base-isolated building that can improve the appearance design without increasing the member type by covering the periphery of the base with members having the same specifications as those used in the upper building. It is to provide.

  In order to solve the above problems, a base cover structure for a base-isolated building according to the present invention includes an upper beam constituting an upper building on an outer peripheral portion of a steel base frame interposed between a steel upper structure and a lower structure. A beam having the same composition and width is arranged in plan alignment with the upper beam for mounting the first floor outer wall panel, and a hardware having substantially the same shape as the hanging wall panel mounting hardware attached to the upper beam is attached, A panel having the same specifications as a hanging wall panel covering the upper beam is attached to a hardware in a continuous manner with the first floor outer wall panel of the upper building.

  Here, the hanging wall panel refers to, for example, a beam for supporting an outer wall of the second floor that cannot be covered with the outer wall panel of the first floor in a portion where the outer wall surface of the first floor is retreated from the outer wall surface of the second floor in the upper building. A short external wall panel used to hide.

  In addition, an outer wall panel having the same specifications refers to an outer wall panel having the same thickness, height and mounting method.

  In the base cover structure of the above seismic isolation building, the upper building is a ramen structure, and the beam joint that is the same as the beam joint in the upper building is formed directly below the column, and the beam joint is the same as the upper beam. Adjacent columns are rigidly connected, and a seismic isolation material consisting of a slider and a receiving plate is placed at the bottom of the beam joint. It is preferable that the beam (nose tip beam) is attached to the tip of the base plate to cover the receiving plate constituting the seismic isolation material in a planar manner.

  The base cover structure of the base-isolated building according to the present invention has the same structure as the structure around the hanging wall of the upper building built on the top of the base, thereby increasing the variety of members and the work specific to the base-isolated building. The base of the base-isolated building can be covered while suppressing the addition. For this reason, when building a base-isolated building, an increase in cost and a long construction period can be suppressed. Further, since the gantry is covered with a panel having the same specifications as the hanging wall of the upper building, the wall surface from the upper building to the gantry has the same design, and the design of the appearance can be improved.

  In addition, the upper building has a ramen structure, and a base is installed not only around the cover but also by placing a base isolation material directly under the column and rigidly joining the lower part of the column with the same connection as the column beam in the upper building. The entire member can be shared with the members constituting the upper building, and a great effect can be achieved in terms of cost and construction period.

  In particular, in industrialized houses that have non-seismic isolation buildings as a variation in addition to seismic isolation buildings, the structure of the gantry cover and gantry is shared with the members of the upper building of the non-seismic isolation building, A great effect can be achieved in terms of cost and construction period.

  In addition, the cantilever provided on the outermost pillar of the building offsets the outer wall and gantry cover on the first floor to the outside of the outermost pillar of the building and covers the base plate of the seismic isolation material in a plane. Without providing a special cover on the upper part of the receiving plate constituting the seismic material, it can be covered horizontally by the gantry cover. For this reason, it is not necessary to add a member for covering the receiving plate in a horizontal plane, and the construction period can be shortened, the cost can be reduced, and the design can be improved.

  Hereinafter, the most preferred embodiment of the gantry cover structure for a base-isolated building according to the present invention will be described. The present invention suppresses an increase in the types of members in the base-isolated building by making the configuration around the base cover covering the base of the base-isolated building the same specification as the configuration around the hanging wall of the upper building, and further improves the appearance design. Is to improve.

  In the present invention, a plurality of seismic isolation materials are placed on a substructure such as a foundation that follows the movement of the ground and does not move relative to the ground in the event of an earthquake, and a pedestal is further placed on the seismic isolation material And this frame is constructed by building a steel-framed upper building.

  In the present invention, a module line corresponding to the outer wall position of the first floor of the upper building is drawn in a grid pattern on a plane with a predetermined module on the outer periphery of the pedestal. Virtual hardware) is installed on this beam (hereinafter referred to as “nose nose beam”), and the hardware that is the same as the hardware for mounting the outer wall panel that is attached to the steel beam that constitutes the upper building is attached. By attaching the first floor outer wall panel and the hanging wall panel covering the upper beam and the outer wall panel of the same specification, a gantry cover that is continuous with the first floor outer wall panel of the upper building is configured.

  The nose tip beam arranged on the outer periphery of the gantry has the same composition and width as the upper beam constituting the upper building. It is preferable that the nose tip beam has the same configuration as the upper nose tip beam disposed at the nose tip of the cantilever frame in the upper building, in order to make the members common. Moreover, it is preferable to share not only the nose tip beam but also other gantry beams with the same specifications as the steel beam constituting the upper building.

  In the present invention, the material and dimensions of the hanging wall panel and the outer wall panel are not limited, but the outer wall in a general residential building such as a lightweight cellular concrete (ALC) panel, a precast concrete (PC) panel, or a ceramic siding panel. It is possible to selectively use a panel that can be used when configuring the.

  Also, the structure of the seismic isolation material is not particularly limited, and a support material composed of a combination of a receiving plate provided on the foundation and a slider provided on the gantry and a relatively moved upper structure is placed at the initial position. It is composed of a sliding bearing type seismic isolation material composed of a combination of restoration materials to be restored and a stack of multiple rubber plates, which absorbs energy when the foundation and superstructure move during an earthquake and causes an earthquake. It is possible to use a laminated rubber type seismic isolation material or the like configured to return the upper structure to the initial position when finished.

  In the present invention, the upper building preferably has a ramen structure, and in particular, preferably has a structure in which a seismic isolation material including a slider and a receiving plate is disposed directly under a pillar. And it is preferable to comprise so that the said receiving plate may be covered planarly by attaching a nose tip beam to the front-end | tip of the cantilever taken out from the outer periphery pillar.

  Next, the structure of the gantry cover according to the first embodiment will be described with reference to the drawings. FIG. 1 is a view for explaining the structure of a gantry cover according to the first embodiment. In this embodiment, a cantilever is taken out from a gantry that constitutes the upper structure of the base-isolated building, a nose tip beam is arranged at the tip of the cantilever beam, and a gantry cover is attached to the nose tip beam.

  The base-isolated building A shown in the figure has a structure in which a plurality of base-isolating materials 2 are arranged on the upper surface of the foundation 1 and a two-story upper building 4 is built on a gantry 3 arranged above the base-isolating materials 2. Has been. The outer periphery of the gantry 3 is covered by a gantry cover 5 that is arranged on the outer periphery of the gantry 3 and below the outer wall of the upper building 4 so as to be continuous with the outer wall.

(Composition of the upper building)
In the present embodiment, the base-isolated building A is an industrialized house with a steel frame ramen structure having a predetermined plane module (for example, 305 mm), and the industrialized house also has a non-base-isolated building as a variation. Of the members that make up, the parts other than the pillars (column bases) are made common with the non-seismic isolation specifications.

  In the upper building 4, the column 10 is made of a square steel pipe, and the upper beam 7 is made of an H-shaped steel. The pillars 10 are arranged at intersections of streets set in a lattice pattern with intervals that are integral multiples of the modules in two orthogonal directions, and the upper beams 7 are joined on the streets so as to connect adjacent pillars 10 to each other. ing. A plurality of bolt holes are drilled in the side surface of the column 10 to form a beam joint, and a joint plate having a bolt hole drilled corresponding to the position of the bolt hole in the column is welded to the end of the beam. Is formed. And the column beam joint part is comprised by contact | abutting the beam junction part of the column 10, and the column junction part of the upper beam 7, and fastening with a high strength volt | bolt.

  The seismic isolation building A is configured to be brought out from the first floor to the outer peripheral portion of the second floor, and an eaves ceiling 16 is formed below the brought-out portion 15. That is, the upper cantilever 9 is taken out from the column 10, the upper nose beam 12 is supported at both ends by the nose tip of the upper cantilever 9, and the upper end portion of the first floor outer wall panel at the middle portion of the upper cantilever 9 The upper wall fixing beam 8 for fixing the two is supported at both ends, and each is mounted on the module line, thereby forming a cantilevered take-out portion 15.

  The upper nose tip beam 12 is made of an H-shaped steel having the same structure and width as the upper beam 7, but its end is configured to be joined to the end of another beam, and is joined to the column 10. The configuration of the upper beam 7 is different.

  A rising portion 1 a is formed on the foundation 1 along the outer wall of the first floor of the upper building 4, and the rising portion 1 a is configured not to expose the seismic isolation material 2 to the outside. And the lower end surface 5a of the gantry cover 5 is arrange | positioned in the site | part facing the upper end surface 1b of the standup | rising part 1a of the foundation 1. FIG.

  The seismic isolation material 2 is a so-called sliding support type, and is configured by a combination of a receiving plate 2 a placed on the upper surface of the foundation 1 and a slider 2 b fixed on the gantry 3 side, and is disposed immediately below the column 10. In the event of an earthquake, the slider 2b moves on the receiving plate 2a. For this reason, the part located in the outer street pillar 10 in the foundation 1 corresponds to the shape of the backing plate 2a on the outer side than the outer street (the street where the outermost pillars are arranged) in order to place the backing plate 2a. It protrudes in a plane.

  The gantry 3 is arranged according to the arrangement of the upper beam 12 on the second floor of the upper building by joining the beam 3a to the gantry beam joint joined to the lower end of the column 10. A cantilever 11 having a smaller take-out dimension than the upper cantilever 9 on the second floor is taken out from the outer pillar 10, and a nose tip beam 13 is attached to the tip of the cantilever 11.

  The beam 3a, the cantilever 11 and the nose tip beam 13 constituting the gantry 3 have the same composition and width as the upper beam 7, the upper cantilever beam 9 and the upper nose tip beam 12 constituting the upper building 4, and the same end portion. The beam joint portion of the beam 3a has the same outer dimensions and the same bolt hole shape and bolt hole arrangement as the beam joint portion of the column 10.

  In the upper nose tip beam 12 disposed at a portion corresponding to the outer periphery of the take-out portion 15, the outer wall panel 17 is supported on the upper surface side of the upper flange 12 a and the position in the thickness direction of the lower end portion of the outer wall panel 17 is defined. The bracket 18 is fixed and an attachment metal 20a that defines the position of the hanging wall panel 19 in the thickness direction is fixed to the lower surface side. The lower flange 12b supports the weight of the hanging wall panel 19 and the hanging wall panel 19. A support metal 20b that defines the position of the lower end in the thickness direction is fixed.

  The drooping wall panel 19 is fixed to the mounting hardware 20a and the supporting hardware 20b by passing a drill screw from the surface side.

  The hanging wall panel 19 has the same material and the same thickness as the outer wall panel 17, and the same design is formed on the surface. Therefore, in the upper building 4, the continuity of the design is ensured between the outer wall panel 17 and the hanging wall panel 19 in the carry-out portion 15.

  A bracket 18 for supporting the outer wall panel 17 constituting the outer wall of the first floor is fixed to the upper surface of the upper flange 13a of the nose tip beam 13 arranged at the outer peripheral portion of the gantry 3, and the above-mentioned hanging wall is fixed to the lower surface. A mounting hardware 20a for panel mounting is fixed, and a supporting hardware 20b is fixed to the lower flange 13b.

  As described above, the upper and lower flanges 13a and 13b of the nose tip beam 13 are fixed to the mounting hardware 20a and the support hardware 20b, respectively, when the second floor take-out portion 15 is formed. Since both have the same dimensions as the upper nose bridge 12, the base 3 can be fixed by fixing a panel for an outer wall having the same dimensions as the hanging wall panel 19 with a mounting drill screw or the like by the mounting hardware 20 a and the supporting hardware 20 b. It is possible to configure the gantry cover 5 to cover.

  In the present embodiment configured as described above, the hanging wall panel 19 constituting the gantry cover 5 is arranged continuously with the outer wall panel 17 on the first floor, so that the continuity of the design as the outer wall is secured, Since the rising portion 1b of the foundation 1 is formed, the seismic isolation building A has an appearance that does not differ from that of a non-base isolation building and can be designed without any sense of incongruity.

  Next, the structure of the gantry cover according to the second embodiment will be described with reference to FIG. In the figure, the same reference numerals are given to the same parts and the parts having the same functions as those of the above-described embodiment, and the description thereof is omitted.

  In this embodiment, the base 1 is not provided with a rising portion, and the lower end surface 5a of the gantry cover 5 is arranged to face the receiving plate 2a of the seismic isolation material 2. That is, a plurality of seismic isolation materials 2 are arranged on the upper surface of the foundation 1, the receiving plate 2 a constituting the seismic isolation material 2 is fixed to the upper surface of the foundation 1, and the slider 2 b is fixed to the gantry 3. Yes.

  On the outer periphery of the gantry 3, a beam 21 having the same configuration and width as the upper beam 7 is arranged at the same position as the outer beam of the upper building 4 in a plan view. An attachment hardware 20a is fixed to the lower surface, and a support hardware 20b is fixed to the lower flange 21b.

  The weight of the hanging wall panel 19 is supported by placing the lower end surface of the hanging wall panel 19 on the supporting metal 20b fixed to the lower flange 21b of the beam 21, and attached to the mounting hardware 20a fixed to the upper flange 21a. The hanging wall panel 19 is positioned by contacting the back surface thereof. And in the said state, the drooping wall panel 19 is being fixed to the attachment metal fitting 20a and the support metal fitting 20b by making a drill screw penetrate from the surface side of the dripping wall panel 19 in the site | part corresponding to each metal fitting 20a, 20b. Yes.

  By attaching the hanging wall panel 19 to the outer surface of the beam 21 as described above, the gantry cover 5 that covers the gantry 3 by the hanging wall 19 can be configured.

  In this embodiment, since the outer wall panel 17 constituting the outer wall of the upper building 4 and the hanging wall panel 19 constituting the gantry cover 5 have the same design, the continuity of the design as the outer wall is ensured. It is possible to exhibit extremely high design properties.

  The gantry cover according to the present invention has the same design in which the outer wall of the upper building and the part covering the gantry are continuous, which is advantageous because it can improve the design of the seismic isolation building.

It is a figure explaining the structure of the mount cover which concerns on 1st Example. It is a figure explaining the structure of the mount cover which concerns on 2nd Example.

Explanation of symbols

A base-isolated building 1 foundation 1a rising part 1b upper end surface 2 seismic isolation material, support material 2a support plate 2b slider 3 mount 3a beam 4 upper building 5 mount cover 5a lower end surface 7 upper beam 8 upper wall fixed beam 9 upper piece Cantilever 10 Pillar 11 Cantilever 12 Upper nose tip beam 12a Upper flange 12b Lower flange 13 Nose tip beam 13a Upper flange 13b Lower flange 15 Carry-out part 16 Eaves top 17 Outer wall panel 18 Bracket 19 Hanging wall panel 20 For hanging wall panel mounting Hardware 20a Mounting hardware 20b Supporting hardware 21 Beam 21a Upper flange 21b Lower flange

Claims (2)

A beam having the same composition and width as the upper beam constituting the upper building on the outer periphery of the steel frame interposed between the steel upper building and the lower structure is installed on the upper beam and the plane for mounting the first floor outer wall panel. And a hardware having substantially the same shape as the hanging wall panel mounting hardware attached to the upper beam, and a panel having the same specifications as the hanging wall panel covering the upper beam is attached to the hardware. A base cover structure for base-isolated buildings, which is attached to the first floor outer wall panel continuously. The upper building has a ramen structure, and a base isolation material consisting of a slider and a receiving plate is arranged directly under the column. The beam is attached to the tip of a cantilever beam taken out from the outer peripheral column, and the base isolation material is attached. The base cover structure for a base-isolated building according to claim 1, wherein the receiving plate is covered in a horizontal plane.

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