JPH0932237A - Surface member fitting structure for concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately fit a surface member to a concrete structure without forming a notch at the edge section of the surface member as before. SOLUTION: The base end section of an anchor 11 is fitted to a concrete structure 50 side, and a holding member 12 for fitting a surface member is fitted on the tip side of the anchor 11. The tip section of the holding member 12 is arranged between connecting faces of multiple surface members, and a connecting pin 13 penetrating the tip section of the holding member 12 is driven into adjacent surface members.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface member mounting structure for a concrete structure, and more particularly to a structure for mounting natural stone or the like on the surface of a bridge or a retaining wall.

[0002]

2. Description of the Related Art Conventionally, natural stones, surface-treated concrete flat plates, and landscape materials such as tiles and bricks have been attached to the surface of concrete structures for the purpose of improving the decorative effect. There is.

FIG. 7 is a vertical sectional view showing a structure for mounting natural stone on a concrete wall surface. In the figure, 50 is a concrete frame, 51 is an anchor driven into the concrete frame 50, and 52 is fixed to the anchor 51 by welding. Vertical bars 53 are granite ground stones arranged on the surface of the concrete skeleton 50. Upper and lower ground stones 53 are dowel pins 54
And is held by a trigger 55 having one end fixed to the vertical bar 52 by welding. Reference numeral 56 is a mortar filled in the space between the concrete 50 and the ground stone 53.

In the procedure for installing the natural stone, first, a hole is made in the surface of the concrete skeleton 50 by a drill, and the anchor 51 is driven into the hole. Next, while fixing the vertical stirrup 52 to the anchor 51 by welding, the concrete frame 50 is fixed.
Place in front of On the other hand, a hole (not shown) for attaching the dowel 54 and a notch 53a for attaching the trigger 55 are processed in the ground stone 53, and are sequentially attached from the lower step while being held by the trigger 55. At that time, the upper and lower ground stones 53 are connected by the dowel pins 54.

[0005]

However, in such a method, it is necessary to weld the anchor 51 and the vertical stirrup 52 and the vertical stirrup 52 and the trigger 55 accurately at the site. As a result, the finish will be greatly affected, such as unevenness of.

Further, in order to fix the ground stone 55 by the trigger 55, it is necessary to form groove-shaped notches 53a on the upper and lower edges of the ground stone 53 having only about 30 mm.
3 There is a problem that cracks on the end faces are likely to occur and the product yield is poor.

Further, in the conventional method, the dowel pin 54
Since it is necessary to attach the trigger material 55 and the trigger material 55, respectively, there is a problem that the construction efficiency is low.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a surface member attaching means for a concrete structure which has a small amount of processing on the surface member, is excellent in strength, and has a good construction efficiency.

[0009]

In order to solve the above-mentioned problems, the present invention provides a structure for mounting a plurality of surface members on the surface of a concrete structure, wherein the base end portion of the anchor member is on the concrete structure side. While attaching by means such as driving, the holding member for attaching the surface member is attached to the tip end side of the anchor member, and further the tip end portion of the holding member is arranged between the joint surfaces of the plurality of surface members, It is characterized in that a connecting pin penetrating the tip of the holding member is driven into both of the adjacent surface members.

Here, the surface member is made of natural stone,
It is possible to employ a plate-shaped material made of concrete, tile, brick, etc.

A female screw portion is formed on the tip side of the anchor member, and a male screw portion that can be screwed into the female screw is formed on the holding member. It is possible to form a plate-shaped tip portion that is wider than the screw portion and has a thickness of the joint width between the surface members.

Further, for butt-joining without joints, a notch for accommodating the plate-shaped tip end portion of the holding member may be formed in the joint surface of the plurality of surface members.

[0013]

[Function] The front end portion of the holding member having the base end portion fixed to the concrete structure side is arranged between the joint surfaces of the surface members, and the connecting pin penetrating the front end portion of the holding member is provided in both adjacent surface members. By driving and fixing the surface member to the concrete structure, the surface member can be accurately attached to the concrete structure without forming a notch in the edge portion of the surface member as in the prior art.

Further, a female screw portion is formed on the tip side of the anchor member, and a male screw portion that can be screwed into the female screw is formed on the holding member. Further, the male screw portion is wider than the male screw portion and is continuous with the male screw portion. By forming the plate-like tip end portion having the thickness of the joint width between the surface members, the attachment position of the holding member can be easily adjusted.

Further, by forming a notch for accommodating the plate-shaped tip end portion of the holding member on the joint surface of the surface member, so-called butt joint without gaps on the joint surface of the surface member becomes possible.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the embodiments shown in the drawings. 1 is a front view of a bridge to which the present invention is applied, FIG. 2 is an enlarged view of part A of FIG. 1, and FIG. 3 is BB of FIG.
Sectional views, FIGS. 4 and 5 are an exploded perspective view and a perspective view showing a mounting structure of a surface member which is an embodiment of the present invention.

With reference to FIGS. 1, 2 and 3, the bridge of this embodiment is a so-called two-pass arch bridge, which is a surface member on the side surface of the concrete skeleton 50 with a width of 1000 mm, a height of 350 mm and a thickness. Side stone 3 made of 100 mm granite
1 is attached. In FIG. 1, 32 is an annular stone made of the same granite covering the lower edge of the arch portion, 33 is a concrete frame 5
It is a gravel stone attached to both upper shoulders of No. 0.

The side stones 31 having a rectangular surface shape are arranged in a so-called zigzag pattern in which the joining surfaces in the vertical direction are staggered for each step, and one fitting 10 is arranged on each of the joining surfaces. There is.

FIG. 4 is an exploded perspective view showing a joint portion of the side stone 31. The fixture 10 is an anchor 11 fixed by driving a base end portion into an anchor attachment hole 50a formed on the concrete skeleton side. The anchor 11 includes a battledore bolt 12 attached to the tip side of the anchor 11 and a connecting pin 13 that penetrates the battledore bolt 12 and fixes adjacent side stones 31.

The anchor 11 has an anti-slip surface, and a cylindrical expansion portion 11 having a slit formed in the axial direction.
b, a frustoconical expansion pin 11a mounted in the expansion portion 11b, and a female screw portion 11c which is formed continuously with the expansion portion 11b and has a female screw formed therein and has a circular cross section.
Therefore, when the base end portion, that is, the expansion pin 11a side is driven in, the expansion pin 11a enters the expansion portion 11b,
Due to the wedge action, the expanded portion 11b expands in the radial direction and is pressed against the inner peripheral surface of the hole or the like, so that an anchor effect can be achieved.

The battledore bolt 12 as a holding member has a male screw portion 12a formed on the base end side thereof that can be screwed into the female screw portion 11c of the anchor 11, and the male screw portion 12a is continuous with the male screw portion 12a. A wider plate-shaped tip portion 12b is formed. Reference numeral 12c is a through hole for inserting the connecting pin 13 formed in the thickness direction of the plate-shaped tip portion 12b. In the state where the linear connecting pin 13 is inserted into the through hole 12c,
The axis of the battledore bolt 12 and the axis of the connecting pin 13 are orthogonal to each other.

Next, with reference to FIGS. 4 and 5, a procedure for attaching the side stone 31 to the concrete skeleton 50 will be described.

First, the entire concrete skeleton 50 is positioned, and the anchor 11 is attached to the attachment position.
An anchor mounting hole 50a having a diameter slightly larger than the outer diameter of the above is drilled by a drill (not shown). Next, after removing the chips in the mounting hole 50a, the anchor 11 is driven in, and the expansion portion 11b is spread by the expansion pin 11a and fixed on the concrete skeleton 50.

Next, the male thread portion 12 of the battledore bolt 12
A is screwed onto the female screw portion 11c of the anchor 11 to be attached. At that time, since the protrusion amount from the surface of the concrete skeleton 50 can be adjusted by adjusting the screwing amount, even when the anchors 11 are improperly driven, the protrusion amount, that is, the mounting position of the side stone 31 is accurately adjusted. I can put it out well.

Further, the plate-like tip portion 1 of the battledore plate bolt 12
Insert the connecting pin 13 into the through hole 12c formed in 2b,
Through hole 3 of one side stone 31 _-1 already attached
Drive into 1a and fix. Then, the adjacent side stone 3
1 slowly _-2 laterally to the side surface stone 31 _-1 side stone 31
The side surface of _-2 is moved until it strikes the plate-shaped tip portion 12b of the battledore bolt 12, and the connecting pin 13 is inserted into the through hole 31a of the side surface stone _31-2 . At this time, an adhesive is applied to the outer periphery of the connecting pin 13 for the purpose of ensuring the connection and for protecting the stone opening. As a result, the side stone 31 _-1 , the side stone 31 _-2 that are adjacent to each other on the left and right are connected, and the attachment to the surface of the concrete frame 50 is completed. Then, the mounting mortar M ₁ and the joint mortar M ₂ are filled.
The side stones 31 on the left, right, top and bottom are sequentially attached in this manner. 3 and 5 respectively show a state in which the mounting is completed.

As described above, according to the surface member mounting structure for the concrete structure of the present embodiment, the side stone 31 is accurately mounted on the concrete structure without forming a notch in the edge of the surface member as in the conventional case. be able to.

Further, the female screw portion 1 is provided on the tip side of the anchor 11.
1c is formed, and a male screw portion 12a that can be screwed into the female screw 11c is formed on the battledore bolt 12 that is a holding member. Further, the male screw portion 12 is continuous with the male screw portion 12a.
By forming the plate-shaped tip portion 12b wider than a and having a thickness of the joint width between the side stones 31, the strength is excellent and the construction can be performed efficiently. Further, since the attachment position of the battledore bolt 12 can be easily adjusted only by adjusting the screwing amount of the battledore bolt 12, it is possible to perform a good construction.

FIG. 6 is a side stone 3 according to the second embodiment of the present invention.
In the perspective view of FIG. 1, a notch 31b for accommodating and storing the plate-shaped tip portion 12b of the battledore plate bolt 12 is formed on each joint surface. This enables the butt joint without the joint mortar described in the previous embodiment.

In the above embodiment, the through hole 12c is formed at the tip of the battledore bolt 12 and the rod-shaped connecting pin 13 is inserted through the through hole 12c. However, the battledore bolt 12 and the connecting pin 13 are integrally formed. It can also be formed. Further, although the side stones of the bridge have been described in the above embodiments, the present invention is not limited to this, and is of course applicable to annular stones and ground covering stones in the bridge, concrete retaining walls, bricks, tiles, and scenic materials. It is possible.

[0030]

According to the present invention, the following effects can be obtained.

(A) The distal end of the holding member, the base end of which is fixed to the concrete structure side, is arranged between the joint surfaces of the surface members, and the connecting pin that penetrates the distal end of the holding member is provided on both sides. By driving and fixing in the surface member,
The surface member can be accurately attached to the concrete structure without forming a notch in the edge of the surface member as in the conventional case.

(B) A female screw portion is formed on the front end side of the anchor member, and a male screw portion that can be screwed into this female screw is formed in the holding member to adjust the screwing amount, thereby adjusting the surface member. The street can be constructed accurately.

(C) By forming a notch for accommodating the plate-shaped tip end portion of the holding member on the joint surface of the surface member, so-called butt joint without gaps on the joint surface of the surface member becomes possible.

[Brief description of drawings]

FIG. 1 is a front view of a bridge to which the present invention has been applied.

FIG. 2 is an enlarged view of a portion A in FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is an exploded perspective view of a surface member mounting structure according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a surface member mounting structure according to an embodiment of the present invention.

FIG. 6 is a perspective view of a side stone which is a second embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view showing a conventional structure for mounting natural stone on a concrete wall surface.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Attachments 11 Anchors 11a Expansion pins 11b Expansion parts 11c Female screw parts 12 Starfish board bolts (holding members) 12a Male screw parts 12b Plate-like tip parts 12c Through holes 13 Connecting pins 31 Side stones 31a Connecting pin mounting holes 31b Notches 32 Ring stones 33 Jibuku stone 50 concrete skeleton 50a anchor mounting hole M ₁ attached mortar M ₂ joint mortar

Claims (4)

[Claims] 1. A structure for mounting a plurality of surface members on a surface of a concrete structure, wherein a base end portion of an anchor member is mounted on the concrete structure side,
The holding member for mounting the surface member is attached to the tip side of the anchor member, and the tip portion of the holding member is arranged between the joint surfaces of the plurality of surface members, and the tip portion of the holding member is penetrated. A surface member mounting structure for a concrete structure, characterized in that a connecting pin is driven into both of the adjacent surface members. 2. The surface member mounting structure for a concrete structure according to claim 1, wherein the surface member is made of natural stone, concrete, tile, or brick. 3. A female screw portion is formed on the tip side of the anchor member, and a male screw portion that can be screwed into the female screw is formed on the holding member, and the male screw portion is continuous with the male screw portion. The surface member mounting structure for a concrete structure according to claim 1, wherein a plate-shaped tip portion wider than the screw portion is formed. 4. The surface member mounting structure for a concrete structure according to claim 3, wherein a notch for accommodating and disposing the plate-like tip end portion of the holding member is formed in a joint surface of the plurality of surface members.