JP5620133B2 - Protective cover mounting structure to slide support structure - Google Patents

Description

  The present invention relates to a structure for attaching a protective cover to a sliding support structure, and more specifically, a sliding plate having a sliding surface and an installation portion provided outside the sliding surface for connection to a foundation side of a building. And an elastic laminate disposed on the sliding surface of the sliding plate and sliding on the sliding surface, and attached to an upper portion of the elastic laminate to allow installation of a building on the upper surface side. A protective cover mounting structure in which a protective cover that covers the sliding surface of the sliding plate is disposed on a sliding bearing structure including a bearing member having a flange plate, and in particular, the seismic isolation performance of the sliding bearing structure is impaired. Without slipping, the sliding surface of the sliding plate can be effectively protected from dust adhesion and damage while fixing the elastic laminate to the desired position on the sliding surface during construction and transportation. And also of the building After Engineering also, can be protected to continue the sliding surface, and inspection is easy, it relates to a protective cover mounting structure of the sliding bearings structure.

  In general, a sliding support structure installed between a building, a building such as a house, a bridge or a tower, and the foundation of the building is a sliding plate having a sliding surface and an elastic laminate disposed on the sliding surface. For example, when the foundation side vibrates due to external vibration input such as an earthquake, the bearing material slides horizontally on the sliding surface, so that the vibration input on the foundation side is It exhibits a seismic isolation function that prevents transmission to buildings.

  By the way, the sliding surface of the sliding plate is usually coated with PTFE (Teflon (registered trademark)) with the aim of reducing the friction of the contact surface with the elastic laminate and smoothing the sliding. Friction reduction treatment is applied. In addition, the friction reduction process as described above may be performed on the contact surface on the elastic laminate side.

  However, this friction reduction treatment is vulnerable to dust and scratches, and during construction of the building, dust accumulates on the sliding surface, or footprints and scratches are caused by carelessness of construction workers. When the PTFE coating is peeled off, the friction coefficient of the sliding surface changes, and the desired seismic isolation performance of the sliding support structure may not be obtained when external vibration is input.

  In that case, it is necessary to repair the corresponding part or to replace the sliding plate in the worst case, which would greatly reduce the cost and work man-hours. Conventionally, a separate curing sheet or plywood plate is placed on this sliding surface. It is common to take measures to prevent damage to the sliding surface due to dust accumulation on the sliding surface and carelessness of construction workers.

However, when a cover is simply laid on the sliding surface, the cover prevents sliding of the support material after the construction is completed, so the cover must be removed along with the completion. It was impossible to continue to protect the slip surface after the completion of the building.
In addition, this conventional technology has a low visual warning function for construction workers and the like. For example, if the construction workers accidentally step on their feet, the slip surface may be damaged. Was expensive.

  On the other hand, for example, in Patent Document 1, a smooth surface provided between the lower housing and the upper housing is provided as one that can protect the slip surface even after the completion of the building. A protective cover for covering a sliding seismic isolation device in which a plate and a sliding member of an elastic bearing provided on the upper housing side are arranged in contact with each other, and the protective cover is A columnar body for preventing a contact with the smooth plate on the internal ceiling surface of the cross-sectional view box shape having a lower opening that covers the smooth plate and the sliding material. According to this, “a protective cover for a seismic isolation device” is provided, which is provided to prevent contact with the smooth plate on the internal ceiling surface of the box shape in cross section. Since a columnar body is provided, the sliding surface of the smooth plate and the protective cover Not in contact with, also, can not tear the protective cover the protective cover is not deformed. As a result, a long period of time can be maintained stably seismic isolation function. A. "

  However, since the cover itself is large in itself, there is a problem that it takes time and labor for transportation and installation, and inspection after the building is completed becomes difficult.

  In addition, during construction and transportation of the sliding support structure, the bearing material is connected by connecting a plurality of flange portions of the support material to a surface other than the sliding surface of the sliding plate with a metal stay member or the like. In general, it is fixed at a desired position on the slip surface to prevent the shift, but the protective cover described in Patent Document 1 also has a problem of hindering attachment and removal of such a rigid stay member. Yes, it is very inconvenient.

JP 2007-39942 A

  Therefore, in view of the above problems, the present invention can effectively protect the sliding surface of the sliding plate from adhesion or damage of dust without impairing the seismic isolation performance at the time of external vibration input, etc. It is another object of the present invention to provide a structure for attaching a protective cover to a sliding support structure that can continuously protect the sliding surface and can be easily inspected.

The gist configuration of the present invention for solving the above problems is as follows.
A protective cover mounting structure for a sliding bearing according to the present invention includes a sliding plate having a sliding surface, an outer region of the sliding surface, and an installation portion for connection to a foundation side of a building, and the sliding plate And an elastic laminate that slides on the sliding surface, and a flange plate that is attached to the upper portion of the elastic laminate and allows the installation of a building on the upper surface side. A protective cover mounting structure in which a protective cover that covers the sliding surface of the sliding plate is disposed on a sliding support structure including a material,
At least two rigid stay members whose one end is fixed to the flange portion of the support member and whose other end is fixed to the installation portion of the sliding plate are disposed, and a protective cover is disposed on the rigid stay member. and,
Each rigid stay member is lifted from the installation portion by removing the other end portion from the installation portion of the sliding plate in a state where the one end portion is fixed to the flange portion of the support member. It is characterized by being dimensionally designed .

  In the above, `` covering '' the slip surface means that the protective cover is located above at least a part of the slip surface, and does not necessarily have to cover the entire slip surface, Further, the sliding surface and the protective cover do not necessarily have to be in contact with each other.

  More preferably, each rigid stay member is removed by removing the other end portion from the installation portion of the sliding plate in a state where the one end portion is fixed to the flange portion of the support member. The dimension is designed so that the other end portion is lifted 65 mm or more from the installation portion.

  4. The fixing device according to claim 1, wherein a slit notched toward the laminated elastic body side is provided in the one end portion of each rigid stay member, and a small diameter portion is passed through the slit. Thus, the rigid stay member is fixed to the flange portion.

  The structure for attaching the protective cover to the sliding support structure according to the present invention includes at least two rigid stay members whose one end is fixed to the flange portion of the supporting material and the other end is fixed to the installation portion of the sliding plate. And a protective cover is disposed on these rigid stay members. According to this, the construction is carried out from the time of transportation without using a large protective cover as described in the cited document 1. The slip surface can be effectively protected until after the construction is completed.

  In addition, during construction and transportation, the support member is fixed at a desired position on the sliding surface of the sliding plate by these rigid stay members. In addition, it is efficient because the trouble of repositioning the support material can be omitted during construction.

  Furthermore, in the protective cover mounting structure to the sliding support structure of the present invention, the protective cover rises from the end portion side of the sliding plate toward the supporting material side in accordance with the extending form of these rigid stay members. As a result, the visual warning function to the construction worker is higher than when only a curing sheet is laid on the sliding surface, which may cause the construction worker to step in by mistake. The risk of the slip surface being damaged by them can be effectively reduced.

  And after completion of the building, either remove only the rigid stay member from this mounting structure, or remove only the end on the sliding plate side of the rigid stay member from the installation part and lift this end upward The protective cover can continuously protect the sliding surface.

  Further, at the time of inspection, the sliding surface can be easily inspected by opening the protective cover.

  Further, in the protective cover mounting structure to the sliding support structure of the present invention, each rigid stay member is detached from the installation portion with the other end portion fixed to the flange portion of the support member. Accordingly, when the other end portion is designed to be lifted from the installation portion, the protective cover is also lifted by lifting the other end portion of the rigid stay member.

  According to this structure, when external vibration is input, the protective cover also moves together with the sliding movement of the bearing material, so that the sliding movement of the bearing material after completion is smoother and seismic isolation performance. Can be secured in the long term.

  Further, at this time, if the other end of each rigid stay member is designed to be lifted by 65 mm or more from the installation portion, for example, the lift amount of the other end of these rigid stay members is increased over time due to its own weight or the like. Even if it is slightly reduced due to a general creep strain, the distance between the other end and the sliding plate can be secured sufficiently, so that the seismic isolation performance is reduced due to the contact between the rigid stay member and the sliding plate. Fear can be eliminated.

  Further, in the protective cover mounting structure to the sliding support structure of the present invention, a bolt notched toward the laminated elastic body side is provided at the one end portion of each rigid stay member, and a bolt or the like that penetrates the small diameter portion through the slit, etc. If the rigid stay member is fixed to the flange portion by the fixing means, the rigid stay member can be removed without removing the fixing means on one end side of the rigid stay member while the protective cover is attached to the flange portion of the support member. Can be easily removed.

It is a cross-sectional perspective view which shows the protective cover attachment structure to the sliding support structure of this invention. (A) is the longitudinal cross-sectional view which shows the protective cover attachment structure to the slide support structure of this invention about the half part, (b) is one end part of the rigid stay member used for the attachment structure of (a) FIG. (A) is sectional drawing which shows the protection cover attachment structure of the state which the other end part of each rigid stay member was removed from the installation part, and this other end part was lifted, (b) is each rigid stay member It is sectional drawing which shows the protective cover attachment structure of the state which removed.

Hereinafter, the present invention will be described in detail with reference to the drawings.
In the place shown in FIG. 1, the protective cover mounting structure to the sliding support structure 1 of the present invention has a sliding surface 2a and is located outside the sliding surface and serves for connection to the foundation G side of the building. A sliding plate 2 having an installation portion 2b, an elastic laminate 3 that is disposed on the sliding surface 2a of the sliding plate 2 and slides on the sliding surface 2a, and an upper surface side that is attached to the upper portion of the elastic laminate 3 A protective cover 5 that covers the sliding surface 2a of the sliding plate 2 is attached to a sliding bearing structure 1 that includes a bearing member 8 having a flange plate 4 that permits installation of a building (not shown).

Here, in the present invention, as shown in FIG. 1, the rigid stay member 6 having one end portion 6 a fixed to the flange portion 4 of the support member 8 and the other end portion 6 b fixed to the installation portion 2 b of the sliding plate 2 is provided. It is important that at least two, four in the illustrated example, are provided, and the protective cover 5 is provided on these rigid stay members 6.
In FIG. 1, the protective cover 5 is virtually transparent and is outlined by a two-dot chain line.

  In the illustrated example, the elastic laminated body 3 includes a laminated portion 3a formed by alternately laminating an elastic body and a rigid body, and a contact portion 3b in which a surface that contacts the sliding surface 2a of the sliding plate 2 is subjected to friction reduction processing. Consists of.

  Further, in the illustrated example, the flange portion 4 of the support member 9 has bolt holes 4b for fixing one end portion 6a of the building or rigid stay member 6 and the flange portion 4 with fixing means 7a such as bolts. A plurality of parts 4 are provided over the entire circumference.

  The sliding plate 2 has a rectangular plate shape, and has triangular installation portions 2b at the four corners. Each installation portion 2b includes the foundation G of the building or the other end portion 6b of the rigid stay member 6 and the sliding plate 2. There are a plurality of bolt holes 2c for fixing the installation portion 2b with fixing means 8a such as bolts.

  As shown in FIGS. 1 and 2A, each rigid stay member 6 has one end portion fixed to the flange portion 4 of the support member 9 by fixing means 7, and the other end portion to the sliding plate by fixing means 8. 2 is fixed to the installation portion 2b.

  The protective cover 5 has a rectangular shape in which a circular shape having a diameter smaller than that of the flange portion 4 of the support member 9 and a diameter larger than that of the elastic laminate 3 is hollowed out at the center portion. Is fixed with the rigid stay member 6 between the one end portion 6a and the flange portion 4, and covers the fixing means 8a on the installation portion 2b side.

  Further, the protective cover 5 has a cylindrical bag portion 5 a for wrapping the central portion of the rigid stay member 6, thereby preventing displacement of the protective cover 5 from the rigid stay member 6.

  For example, after the completion of the building, each rigid stay member has the other end 6b installed on the sliding plate 2 in a state where the one end 6a is fixed to the flange 4 of the support member 9 as shown in FIG. The dimension is designed so that the other end 6b is lifted from the installation part 2b by being removed from the part 2b.

  As shown in FIG. 3A, each rigid stay member 6 is a metal member, and when the other end portion 6b is removed, the other end portion 6b is configured to spring-back upward by 65 mm or more. Has been.

  As shown in the figure, the slip surface after completion can be protected by covering the rigid stay member 6 on which the other end 6b is lifted by removing the fixing means 8 with a protective cover. Further, the removed fixing means 8 can be reattached to the bolt hole 2c and used for fixing the sliding plate and the foundation G of the building.

  On the other hand, in the present invention, as shown in FIG. 3 (b), it is possible to cover the sliding surface 2a of the sliding plate 2 with the cover 5 in a mode in which each rigid stay member 6 is completely removed. In this case, the cover 5 is preferably fixed to the flange portion 4 by the fixing means 7.

  At that time, each rigid stay member 6 may have a slit 6c that passes through the end of the laminated elastic body 3 at one end 6a, as shown in FIG. preferable.

  Since the slit 6c is wider than the small diameter portion 7b of the fixing means 7 and smaller in diameter than the large diameter portion 7a of the fixing means 7, one end portion is provided unless the other end portion 6b side of the rigid stay member 6 is removed. The 6a side is fixed by the fixing means 7.

  According to this, these rigid stay members 6 can be easily removed simply by removing the fixing means 8 on the other end 6b side and pulling the rigid stay members 6 outward.

DESCRIPTION OF SYMBOLS 1 Sliding bearing 2 Sliding plate 2a Sliding surface 2b Installation part 2c Bolt hole 3 Elastic laminated body 3a Laminated part 3b Contact part 4 Flange plate 4b Bolt hole 5 Protective cover 5a Bag part 6 Stiff stay member 6a One end part 6b Other end part 6c Slit 7, 8 Bolts 7a, 8a Large diameter part 7b, 8b Small diameter part 9 Bearing material

Claims (3)

A sliding plate having a sliding surface and having an installation part provided for connection to a foundation side of a building in the outer region of the sliding surface, and the sliding surface disposed on the sliding surface of the sliding plate. A sliding support structure comprising: an elastic laminate that slides on the upper surface; and a support member that is attached to an upper portion of the elastic laminate and has a flange plate that permits installation of a building on the upper surface side. A protective cover mounting structure comprising a protective cover for covering the sliding surface of the plate,
At least two rigid stay members whose one end is fixed to the flange portion of the support member and whose other end is fixed to the installation portion of the sliding plate are disposed, and a protective cover is disposed on the rigid stay member. and,
Each rigid stay member is lifted from the installation portion by removing the other end portion from the installation portion of the sliding plate in a state where the one end portion is fixed to the flange portion of the support member. Protective cover mounting structure to the sliding support structure, characterized by dimension design . Each rigid stay member is lifted by 65 mm or more from the installation portion by removing the other end portion from the installation portion of the sliding plate in a state where the one end portion is fixed to the flange portion of the support member. protective cover mounting structure of the sliding bearings structure according to the dimensions are designed, according to claim 1 as. Each rigid stay member has a slit cut out toward the laminated elastic body side at the one end portion, and the rigid stay member is fixed to the flange portion by a fixing means that allows a small diameter portion to pass through the slit. A structure for attaching a protective cover to the sliding support structure according to claim 1 or 2 .

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