JP5406783B2 - Protective cover for sliding bearing structure - Google Patents

Description

  The present invention relates to a protective cover for a sliding support structure, in particular, a base plate having a sliding surface, an elastic laminate disposed on the sliding surface of the base plate and slidable on the sliding surface, and A protective cover for covering a sliding surface of the base plate of a sliding bearing structure, which is attached to the upper part of the elastic laminate and includes a bearing member having a flange plate that allows installation of a building on the upper surface side; Above all, the sliding surface of the base plate can be protected from damage due to dust adhesion and carelessness of workers, and erosion of rainwater, etc., and condensation on the sliding surface can be effectively evaporated, and further inspection. Protective cover for sliding support structure that can be easily protected and can protect the sliding surface during construction by attaching it before construction A.

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

  By the way, the sliding surface of the base plate is usually frictioned such as coating with PTFE (Teflon (registered trademark)) with the aim of reducing the friction of the contact surface with the elastic laminate and smoothing the sliding. Reduction processing 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 erosion caused by dust, scratches, condensation, rainwater, etc., and during the construction of the building, dust accumulates on the sliding surface or due to carelessness of construction workers. If the PTFE coating is peeled off due to footprints or scratches, 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.

  On the other hand, conventionally, there is a technique for preventing dust accumulation on the sliding surface by laying a dustproof cover made of a flexible material containing air such as nonwoven fabric on the sliding surface of the base plate. According to this, since the dust-proof cover is lightweight, it is easy to inspect the slip surface after the building is completed.

  However, simply laying such a dust-proof cover on the slip surface is too flexible, so that, for example, a construction worker accidentally steps in a building or drops a tool during construction. In the case where it slips, the load and impact are not sufficiently dispersed, and the sliding surface may be damaged.

  On the other hand, when a veneer plate or the like is laid as a cover on the slip surface, the plate is too hard, and thus a load or an impact is directly transmitted to the slip surface, and the slip surface may be damaged in the same manner as described above.

  Further, in Patent Document 1, “a sliding plate installed on a foundation, a sliding support body fixed to a structure, a sliding material fixed to the bottom surface of the sliding support body and sliding on the sliding plate; A dust-proof cover for covering the entire surface of the sliding plate in the sliding bearing, comprising: one end edge of two flexible rubber or plastic sheets that are separable from each other in a superposed state. In addition, a half-shaped opening that forms one opening of a size that can be fitted into the sliding support main body is provided in a central portion of each one end edge, respectively, along a peripheral edge of each half-shaped opening, According to the present invention, there is provided a dust-proof cover for a sliding support, which is provided with a tightening portion that is wound around the outer periphery of the sliding support main body and is detachably locked. Each one edge In addition, in addition to being detachably joined in a superposed state, a tightening part that is detachably locked to the outer periphery of the sliding support body is provided at the center of each edge, so when checking the sliding support, etc. The seat is lightweight and flexible, so that it can smoothly respond and recover as the sliding bearing moves without impairing the seismic isolation characteristics of the sliding bearing. . "

  However, in the above dust-proof cover for sliding support, the sliding surface is covered with a flexible rubber or plastic sheet, so the air permeability between the sheet and the sliding surface is poor. If condensation occurs on the sliding surface, the condensation may erode the sliding surface without evaporating for a long time.

  Further, in Patent Document 2, “a smooth plate disposed between the lower housing and the upper housing, provided on the lower housing side, and a sliding member of the elastic bearing provided on the upper housing side is mutually connected. A protective cover that covers the sliding seismic isolation device disposed in contact with each sliding surface, the protective cover having a lower opening that covers the smooth plate and the sliding material. “A protective cover for a seismic isolation device, which is a shaped molded body, and is provided with a columnar body for preventing contact with the smooth plate on the internal ceiling surface of the box-shaped section in cross section”. According to this, since a columnar body for preventing contact with the smooth plate is provided on the internal ceiling surface of the cross-sectional view box shape, it is in contact with the sliding surface of the smooth plate and the inner surface of the protective cover. In addition, since the protective cover is not deformed, there is a tear in the protective cover. Not come. As a result, a long period of time can be maintained in a stable manner seismic isolation function. And ".

  However, since the above-mentioned protective cover itself is large, there is a problem that it takes time and labor for transportation and installation, and it is difficult to inspect the building after completion.

  In addition, during construction and transportation of the sliding support structure, the support material is slid by connecting a plurality of flange parts of the support material to a surface other than the sliding surface of the base plate with a metal stay member or the like. In general, it is fixed at a desired position on the surface to prevent displacement, but the protective cover described in Patent Document 1 also has a problem of hindering attachment and removal of such a rigid stay member. For this reason, it is virtually impossible to attach the protective cover before construction and protect the slip surface during construction.

JP 2003-49898 A JP 2007-39942 A

  Therefore, in view of the above-mentioned problems, the present invention protects the sliding surface of the base plate from damage caused by dust adhesion or operator's carelessness, and erosion of rainwater, and effectively condenses the sliding surface. To provide a protective cover for a sliding support structure that can be evaporated and that can be easily inspected, and that can be attached before construction to protect the sliding surface during construction. Objective.

The gist configuration of the present invention for solving the above problems is as follows.
A protective cover for a sliding support structure according to the present invention includes a base plate having a sliding surface, an elastic laminate disposed on the sliding surface of the base plate and slidable on the sliding surface, and the elastic laminate. A protective cover for covering the sliding surface of the base plate, of a sliding support structure comprising a support member having a flange plate that is attached to the upper surface of the base plate and has a flange plate that allows installation of a building on the upper surface side,
A polymer body having a plurality of ventilation windows penetrating in the thickness direction is provided, and a filter is provided in each of the ventilation windows.

  In the above description, “covering” the slip surface means that the protective cover is positioned above at least a part of the slip surface, and it is not always necessary to cover the entire slip surface.

  Further, in the present invention, the “filter” is made of a material that allows passage of gas such as air or water vapor, but prevents passage of fine particles such as dust or reduces the passage amount thereof. Shall be said.

  Preferably, each ventilation window has the same shape and size, and is uniformly arranged over the entire surface of the main body.

Preferably, the area of each ventilation window is set within a range of 100 to 2500 mm ² .

  In the place described in any one of Claims 1-3, Preferably, the said filter is comprised with a nonwoven fabric.

  In the place described in any one of Claims 1-4, Preferably, the peelable curing sheet is attached to the upper surface of the said protective cover over the whole surface.

  In the place described in any one of Claims 1-5, Preferably, the thickness of the said protective cover shall be in the range of 10-50 mm.

  Since the main body of the protective cover for the sliding support structure of the present invention is composed of a hard and elastic polymer, for example, a construction worker may accidentally step on a foot during construction of a building. Even if the tool is dropped or the tool is dropped, the main body of the protective cover sufficiently disperses these loads and impacts, so that the sliding surface is not damaged.

  Also, in this protective cover, a plurality of ventilation windows are provided in the polymer main body, and a filter is provided in each of the ventilation windows, so that the filter prevents dust from passing and protects the sliding surface. In order to ensure air permeability between the cover and this, for example, when condensation occurs on the sliding surface or rainwater adheres to it, these can be effectively evaporated, such as condensation and rainwater. However, it is possible to prevent an increase in the coefficient of friction due to the erosion of the sliding surface, and to eliminate the possibility of a decrease in the seismic isolation performance of the device.

  Further, this protective cover has a simple and less bulky structure, and has a smaller number of parts compared to the prior arts such as Patent Documents 1 and 2 described above, and can be reduced in weight. Installation and inspection work can be greatly facilitated.

  Further, in the protective cover for the sliding support structure of the present invention, when each ventilation window has the same shape and size and is uniformly arranged over the entire surface of the main body, the shock absorbing effect and the transpiration effect of the protective cover described above. Can be obtained uniformly over the entire surface of the protective cover.

Further, in such a protective cover, the area of each vent window by the range of 100～2500Mm ^2, without complicating the manufacture of the protective cover itself, it is exerted sufficient shock absorbing effect it can.

  In addition, when the area of each ventilation window is too small, since it is necessary to provide as many ventilation windows as that, the manufacturing process of the protective cover itself may be complicated. On the other hand, the area of each ventilation window is too large. If, for example, a construction worker walks on this protective cover or accidentally drops a tool etc., the tool etc. passes between the ventilation windows and the impact is not sufficiently absorbed. There is.

  In addition, if the filter provided in each ventilation window is made of a nonwoven fabric excellent in air permeability and dust resistance, the above transpiration effect and dust prevention effect can be obtained more effectively. Moreover, since a nonwoven fabric is generally lightweight, there is little fear of the weight increase of a protective cover.

  Furthermore, by attaching a peelable curing sheet over the entire surface of the protective cover, the filter can be protected from dirt and the like when a construction worker accidentally steps in during construction, for example. Problems such as clogging can be prevented. In addition, after completion of a building, desired dustproof property and transpiration | evaporation property can be ensured by peeling this curing sheet from a main-body part.

  In addition, by setting the thickness of the protective cover for the sliding support structure of the present invention within the range of 10 to 50 mm, the strength against the load or impact is increased without excessively increasing the weight of the protective cover. It can be secured sufficiently.

  In addition, when the thickness of the protective cover is too large, the weight becomes too large along with this, and there is a possibility that transportation, construction, inspection, etc. may not be easy. On the other hand, when the thickness is too small. Since the strength of the main body is reduced, there is a risk that sufficient strength against a load, an impact, or the like cannot be obtained.

It is a cross-sectional perspective view which shows the protective cover for the sliding support structure of this invention in the aspect attached to the sliding support structure. (A) is a top view which expands and shows the upper surface of the protective cover for the sliding support structure of this invention shown in FIG. 1, (b) is BB sectional drawing of (a).

Hereinafter, the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, a protective cover 1 for a sliding support structure according to the present invention is arranged on a base plate 2 having a sliding surface 2a and a sliding surface 2a of the base plate 2, and can slide on the sliding surface 2a. Base plate 2 of a sliding support structure comprising a flexible elastic laminate 3 and a support member 9 having a flange plate 4 attached to the upper portion of the elastic laminate 3 and allowing the installation of a building on the upper surface side. Is disposed on the sliding surface 2a.

  FIG. 2A is an enlarged view of a part of the upper surface of the protective cover 1 indicated by A in FIG. Here, the protective cover 1 for the sliding support structure of the present invention has a plurality of ventilation windows 6 penetrating in the direction of thickness h as shown in FIGS. 2 (a) and 2 (b). It is important that the main body 5 is made of a polymer and that the filter 7 is provided in each of the ventilation windows 6.

  Examples of the polymer suitable for forming the main body 5 in the protective cover 1 include a resin and a hard rubber.

  Moreover, as a material of a filter, a nonwoven fabric, cloth, cotton, a chemical fiber, etc. can be mentioned.

  In addition, in the place shown in FIG. 1, the protective cover 1 is divided | segmented into the two half surfaces 1a and 1b of the same area joined by the joining surface 10, and has covered the sliding surface 2a over the whole surface.

  In FIG. 1, the base plate 2 of the sliding support structure has an installation portion 2 b that is provided on the outer side of the sliding surface 2 a and serves for connection to the foundation side of the building. Each installation portion 2b has a plurality of bolt holes 2c through which fixing means such as bolts for connection are passed.

  Further, in FIG. 1, the elastic laminate 3 includes a laminate portion 3 a formed by alternately laminating an elastic body and a rigid body, and a contact portion 3 b that is subjected to friction reduction processing on the surface that contacts the sliding surface 2 a of the base plate 2. It is comprised by.

  Further, in the illustrated example, the flange portion 4 of the support member 9 includes a plurality of bolt holes 4b over the entire circumference of the flange portion 4 for fixing the building and the flange portion 4 with fixing means 7a such as bolts. Have one.

  As shown in FIG. 2 (a), each of the ventilation windows provided in the main body 5 has a substantially square shape with four sides chamfered and the length of one side is W. Uniform across.

As for the size and quantity of the ventilation window 5, for example, the main body 5 can sufficiently disperse the load due to the footprint etc. with respect to the size of the footprint F of the worker schematically shown in FIG. It is preferable to provide a reasonably small and large number, and in the illustrated example, W is preferably about 1.0 to 5.0 cm.
That is, the area of the ventilation window 5 is preferably within a range of 100 to 2500 mm ² .

  As shown in FIG. 2B, each ventilation window 5 is filled with a filter 7 made of a nonwoven fabric, and the filter 7 prevents air from being deposited on the sliding surface 2a while ensuring air permeability. be able to.

  Further, a thin curing sheet 8 is attached to the entire upper surface of the protective cover 1, and the curing sheet 8 protects the film 7 from external dirt during construction.

  In the illustrated example, the protective cover 1 has a thickness h as thin as about 1 cm and is lightweight, so that the protective cover 1 can be easily turned by human power during inspection.

1 Protective cover 1a Protective cover (half face)
1b Protective cover (half side)
2 Base plate 2a Sliding surface 2b Installation portion 2c Bolt hole 3 Elastic laminated body 3a Laminated portion 3b Contact portion 4 Flange plate 4a Bolt hole 5 Body portion 6 Venting window 7 Filter 8 Curing film 9 Bearing material 10 Joint surface F Footprint

Claims (6)

A base plate having a sliding surface, an elastic laminate disposed on the sliding surface of the base plate and slidable on the sliding surface, and a building on the upper surface side attached to the upper portion of the elastic laminate A protective cover for covering a sliding surface of the base plate of a sliding support structure comprising a support member having a flange plate that permits installation of the base plate,
A protective cover for a sliding support structure, comprising a polymer main body having a plurality of ventilation windows penetrating in the thickness direction and provided with a filter in each of the ventilation windows.   The protective cover for a sliding support structure according to claim 1, wherein each ventilation window has the same shape and size, and exists uniformly over the entire surface of the main body. Area of each vent window is in the range of 100～2500Mm ^2, protective cover for sliding bearings structure according to claim 1 or 2.   The protective cover for a sliding support structure according to any one of claims 1 to 3, wherein the filter is made of a nonwoven fabric.   The protective cover for a sliding support structure according to any one of claims 1 to 4, wherein a peelable curing sheet is attached to the upper surface over the entire surface.   The protective cover for a sliding support structure according to any one of claims 1 to 5, wherein the thickness is in a range of 10 to 50 mm.

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