JPS64524B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shoe seat for rubber shoes that supports an upper structure such as a bridge girder on a lower structure such as a bridge pier, and a method for installing the shoe seat on the lower structure.

Conventionally, rubber shoes were constructed by assembling temporary frames A and A on a lower structure B, and filling the temporary frame A with filler C such as mortar and reinforcing material D, as shown in Figure 1. A method is used in which a shoe seat E is formed while adjusting the level, and a rubber shoe S that supports the upper structure G is placed on the shoe seat E.

However, in this method, the shoe seat E is finished by hand, so it is difficult to match the level of all of the multiple substructures B, and the smoothness of the surface on which the rubber shoe S is placed is not constant. Therefore, there is a problem that the rubber shoe S cannot fully exhibit its function.

In addition, as upper structures have become larger in recent years, the dimensions of the rubber shoe S have increased, making it difficult to adjust the level and maintain constant smoothness, making it impossible to shape the shoe seat E by hand. I'm getting used to it.

In order to solve these problems, we have developed a construction method in which a rectangular precast concrete support stand made using formwork or the like is used as a footrest, and more specifically, an anchor bolt is inserted into the support stand that becomes a foothold. , and the support base is supported by placing nuts on the anchor bolt so as to sandwich the support base from the upper and lower surfaces, and the support base on which the anchor bolt is arranged is inserted into a recess previously provided in the lower structure through the anchor bolt. The level of the support base is adjusted by screwing the nut on the lower side of the support base attached to the anchor bolt, and after adjustment, filling material is loaded into the recess of the lower structure to fix the support base to the lower structure. Method (Unexamined Japanese Patent Publication No. 54-66526)
is proposed.

Although this method satisfies the level adjustment and smoothness of the shoe seat, there is the problem that the load acting on the rubber shoe seat cannot be transmitted to the lower structure over the entire surface of the shoe seat, that is, the load is not transmitted even after the shoe seat is fixed with mortar. The problem remains that the load is concentrated on the anchor bolt and transmitted to the lower structure through the nut that adjusts the level of the shoe seat, and that the concentrated load damages the lower structure.

The present invention has been made in view of the above, and it facilitates the construction and level adjustment of the shoe seat by separately manufacturing the shoe seat and using a wedge piece made of a soft or elastic material without using an adjustment bolt. The load acting on the shoe seat via the rubber shoe is transmitted to the lower structure without acting as a locally concentrated load.

That is, a recess is provided on the lower structure such as a pier, and the upper surface on which the rubber shoe is placed in the recess is formed to be smooth, and the lower surface is formed in a tapered shape that increases in thickness from the ends toward the center. Consisting of a base body and a plurality of wedge pieces made of an elastic material or soft material formed into a convex curved surface of an arcuate taper or annular taper, one surface of which is flat and the other surface that contacts the lower surface of the base is tapered. A plurality of wedge pieces of the rubber shoe seats are placed facing each other in pairs so that the flat surfaces of the shoes are in contact with the bottom of the recess and the convex curved surfaces are positioned upward, and the base is placed on the wedge pieces. Place it with its bottom surface touching.

Next, the level of the base body is adjusted using a wedge piece, and after the adjustment, a filling material is loaded so that the wedge piece is buried between the side and bottom surfaces of the base body and the recess of the lower structure, and the shoe seat is fixed. Accordingly, the present invention provides a shoe seat for a rubber shoe in which the load acting on the base body through the rubber shoe is prevented from acting on the wedge piece due to elastic or plastic deformation of the wedge piece, and a method for installing the shoe seat on a lower structure. be.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Reference numeral 1 denotes a shoe seat, and the shoe seat 1 is composed of a base body 2 and a plurality of wedge pieces 3.

The base 2 is made of precast concrete on which reinforcing members 4, 4 are arranged, and the upper surface 5 is formed using a formwork.
on the smooth surface on which the rubber shoe S is placed, and a taper whose thickness increases from the pair of opposing ends toward the center so that a filler 10, which will be described later, can be easily loaded when the lower surface 6 is fixed. It is formed in the shape of

The wedge piece 3 is made of an elastic material, such as a plastic material such as hard rubber, or a soft material, such as a soft metal material such as aluminum,
One surface is formed into a flat surface 7 and the other surface is formed into a convex curved surface 8 which is tapered in an arcuate shape or annularly tapered shape.

Next, a method for installing the shoe seat 1 having the above-described structure on the lower structure will be described in detail.

That is, the shoe seat 1 is attached to a lower structure B such as a pier, and the wedge piece 3 of the shoe seat is placed in a recess 9 previously provided on the lower structure B, so that the flat surface 7 of the shoe seat 1 is in contact with the bottom surface of the recess 9, and the convex curved surface thereof. A plurality of wedge pieces 8 are placed facing each other in pairs, and then the base body 2 is placed on the wedge piece 3 with its lower surface 6 in contact with it.

Thereafter, by moving the wedge piece 3 back and forth along the arcuate taper or annular taper of the convex curved surface 8 in contact with the lower surface 6 of the base, the level of the shoe seat 1, so-called the level of the upper surface 5 of the base 2, is The level of the base body 2 is adjusted by raising and lowering it, and after adjusting the level, a filler material 10 such as mortar is loaded so as to bury the wedge piece 3 between the side and bottom surfaces 6 of the base body 2 and the recess 9 of the lower structure. It is installed by fixing the seat 1 to the lower structure B.

In addition, when placing the rubber shoe S on the shoe seat 1, the rubber shoe S is placed on the shoe seat 1.
Before installation on the lower structure B, the shoes are placed on the upper surface 5 of the base in advance and installed on the lower structure B in this state, or after the shoe seat 1 is installed on the lower structure B, on the upper surface 5 of the base. Any method of mounting may be used.

By configuring the shoe seat 1 in this way and adopting the installation method described above, the shoe seat 1 on which the rubber shoe S is placed
construction and level adjustment can be easily carried out, and the load acting on the shoe seat 1 via the rubber shoe S can be transmitted to the lower structure B through the entire lower surface 6 of the base without being concentrated on the wedge piece 3. are made of an elastic material or a soft material, and even if a load is applied to the shoe seat 1 through the rubber shoe S, the load is absorbed by the wedge piece 3 as it deforms elastically or plastically due to the load. Since it is transmitted directly from the base 2 to the lower structure B without being transmitted to the lower structure B, damage to the lower structure B due to concentrated loads can be prevented.

Here, to explain the wedge piece 3 in detail, the wedge piece 3 rigidly supports the weight of the base body 2 under construction or the base body 2 on which the rubber shoe S is placed, but the shoe seat 1
The so-called base body 2 and the wedge piece 3 are formed to be elastically or plastically deformed under the load that acts after they are fixed to the lower structure B, that is, the own weight of the upper structure and the load that acts on the upper structure, and therefore the above-mentioned effect is achieved. It gives rise to

Further, the wedge piece 3 has a convex curved surface 8 having an arcuate taper or an annular taper that tapers so as to make point contact with the lower surface 6 of the base.
Since the base member 2 and the wedge piece 3 are formed at a slant, there is only one point of contact even if the base member 2 is arranged obliquely in the recess 9 of the lower structure, so that rattling between the base body 2 and the wedge piece 3 can be prevented.

FIG. 5 shows another embodiment of the base body 2 constituting the shoe seat 1 for rubber shoes.

That is, in this embodiment, the lower surface 6 of the base is formed into a tapered shape in which the thickness increases from two pairs of opposing ends toward the center.
The wedge pieces 3 are placed in the lower structure B by arranging the wedge pieces 3 so as to face the tapered portions of the lower surface 6, respectively, as shown in FIG.

In addition, in this embodiment, the base body 2 constituting the shoe seat 1 is formed from precast concrete that can be mass-produced with a certain quality using a formwork or the like.
It may also be made of other metal materials such as cast steel.

The present invention has the above-mentioned configuration, and by using a separately manufactured shoe seat with a simple structure, the construction and level adjustment of the shoe seat can be easily performed, and the load acting on the shoe seat via the rubber shoe can be reduced. By forming the wedge piece from a soft or elastic material, the information can be transmitted to the lower structure through the base body, which has great effects such as being able to prevent damage to the lower structure.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional method of forming a shoe seat for rubber shoes, and FIG. 2 is a partial longitudinal section showing a shoe seat for rubber shoes of the present invention and a method of installing the shoe seat in a lower structure. Fig. 3 is a plan view in Fig. 2, Fig. 4 is a plan view in Fig. 2;
The figure is a perspective view showing the shoe seat for rubber shoes of the present invention, No. 5
The figure is a perspective view showing the shape of a base constituting a shoe seat for rubber shoes according to another embodiment, and FIG. 6 is an installation plan view of a shoe seat using the base according to another embodiment. 1: shoe seat, 2: base, 3: wedge piece, 5: upper surface, 6: lower surface, 7: plane, 8: convex curved surface, 9: recess, 10: filler.

Claims (1)

[Claims] 1. The upper surface on which the rubber shoe is placed is formed to be smooth,
A rubber shoe consisting of a tapered base whose lower surface increases in thickness from the ends toward the center, and a plurality of wedge pieces made of an elastic or soft material on which the base is placed. It is a shoe seat,
A rubber shoe characterized in that the wedge piece is formed into a convex curved surface with one surface having a flat surface and abutting the lower surface of the base and the other surface tapering into an arcuate taper or annular taper, and makes point contact with the lower surface of the base. Yukutsuza. 2 Place a shoe seat for rubber shoes in a recess provided on a substructure such as a pier, and place the wedge pieces of the shoe seat in pairs facing each other so that the flat surface is in contact with the bottom of the recess and the convex curved surface is located upward. Place the base body on the wedge piece with its lower surface in contact with it, then adjust the level of the base body with the wedge piece, and after adjusting the level of the base body, place the base body on the wedge piece between the side and lower face of the base body and the recess of the lower structure. By fixing the shoe seat by filling the filler so as to bury the shoe, the load acting on the base body through the rubber shoe is prevented from acting on the wedge piece due to elastic or plastic deformation of the wedge piece. How to install the lower structure of the shoe seat for rubber shoes.