JPH0229825B2 - TETSUKOTSUKENCHIKUBUTSUTONOKENZOBUTSUNIOKERUSEKIITAKABENOSHIJIKOZO - Google Patents

Description

[Detailed Description of the Invention] ●Industrial Application Field This invention aims to increase and stabilize the pull-out strength and to easily support stone slab walls of steel-framed buildings and other buildings. It concerns the support structure of stone slab walls in buildings.

●Prior art Regarding the support structure of the upper and lower opposing parts of the stone plate wall surface, prior patent No. 1213887 (Special Publication No. 58-51109) earthquake-resistant construction structure of the stone plate wall of buildings such as concrete buildings,
Patent No. 1221338 (Japanese Patent Publication No. 58-56789) has been developed as an earthquake-resistant construction structure for auxiliary stone slab walls of structures such as concrete buildings, but the supporting structure other than the upper and lower connecting parts is not covered by the Japanese Patent Publication No. 58-56789. As shown in Publication No. 56789, a hole for a so-called Weston anchor is drilled in the stone plate surface, a bolted part with a female thread called a Weston anchor is driven into this hole, and this Weston anchor and a groove-shaped A steel frame made of steel, etc. is tightened with hexagonal bolts, and the stone plates are tightened and fixed to the steel frame. Since suction force in the vertical direction may act on the wall surface of a building due to air blowing pressure, the Weston anchor of the stone slab that makes up the wall surface should be set in the opposite direction to the driving direction of the Weston anchor. A suction force due to head wind pressure may act in the direction.

In that case, the Weston anchor must withstand the suction force so that it does not slip out of the stone plate, but the inner diameter of the hole drilled in the stone plate and the slope that forms the outside of the Weston anchor must be There is a disadvantage that the pull-out strength of Weston anchors varies depending on the machining accuracy of the dimensions of the outer diameter expansion part, etc., and this requires a skilled technique and requires a lot of time and effort to drive Weston anchors into stone slabs. However, there was a drawback that the cost was high.

●Means for Solving the Problems According to the present invention, the drawbacks of the prior art are overcome, and a support structure for stone slabs is provided that increases and stabilizes the pull-out strength, allows parts to be manufactured at low cost, and is easy to construct. can be done.

In this invention, in a structure such as a steel frame building, in which a stone slab wall is constructed in parallel and upright on the outer side of the outer slope of an upright frame body such as a steel frame, at an appropriate distance from the wall. The base of an anchor bolt, which has a refracting anchor part bent diagonally upward on the tip edge of the upright frame body, is tightened in the horizontal direction, and the bent anchor part on the tip edge of the anchor bolt is attached to the stone plate. It is embedded in an obliquely upwardly sloping hole or hole drilled on the back side of the stone slab of the wall, and is anchored with a filling material such as cement mortar, and an anchor bolt is attached to the bent part of the bent anchor part. The washers inserted perpendicularly and fixed by welding or the like contact the back side of the stone slab of the stone slab wall and are fixed integrally, so that the stone slab wall in a building such as a steel frame building is supported. The bending anchor part at the tip of the anchor bolt is inserted into the embedded hole drilled at an angle in the stone plate surface, and the anchor is anchored to the stone plate using mortar or the like. The washer fixed to the bent part of the bending anchor part is glued and fixed to the back of the stone plate,
In addition, by inserting the base of the anchor bolt into the mounting hole provided in the upright frame and tightening both sides with the tightening body, the drawbacks of the prior art can be overcome, the pull-out strength is increased and stabilized, and the parts are inexpensive. The present invention is extremely useful in that it can provide a support structure for stone slabs that can be easily manufactured and easily constructed.

The invention will now be explained with reference to the drawings.

Figures 1 to 4 show an embodiment of the present invention and its operation. In a structure such as a steel frame building in which a stone slab wall 3 is constructed upright in parallel at an appropriate interval, a bending anchor part 4 which is bent upwardly at the tip edge is attached to the upright frame 1. The base 6 of an anchor bolt 5 made of a metal material such as iron and arranged horizontally is tightened, and the bent anchor part 4, which is bent diagonally upward at the tip edge of the anchor bolt 5, is attached to the stone plate wall. It is embedded in a diagonally upwardly inclined bending hole 7 drilled in the back surface of the stone plate 3' of No. 3, and is anchored with a filler material 8 such as cement mortar.

Further, a male thread 9 is cut into the diagonally upwardly inclined bending anchor portion of the tip end edge of the anchor bolt 5, and this male thread 9 is anchored in the bending embedding hole 7 by the filler material 8.

A male thread 6' is carved in the root 6 of the anchor bolt 5, and the male thread at the root is inserted into an insertion hole 10 provided in the upright frame 1,
The male thread at the base thereof is fastened and fixed via the upright frame 1 by the female threads of the fastening bodies 11, 11 on both sides.

Further, the bent portion of the diagonally upwardly bent bent anchor portion 4 at the tip of the anchor bolt 5 is in contact with the back surface of the stone plate 3' of the stone plate wall 3 and is attached to a washer 13 made of metal material such as iron which is bonded at 12 before bonding. It is inserted perpendicularly into the provided insertion hole 14 and fixed together by welding 15 or the like.

In the drawings, reference numeral 16 indicates a deformed enlarged portion for increasing the section modulus of the horizontal anchor bolt 5 in the longitudinal direction (direction of gravity), and reference numerals 17 and 17 indicate tightening washers.

●Function When a back wind pressure acts on the stone plate of the stone plate support structure of the present invention constructed as described above, as shown in FIG. Stone plate surface corresponding to approximately the center
The force _{F 1} in the direction perpendicular to the stone plate surface is equivalently applied to point C, and the force F ₁ is decomposed into component forces F ₂ and F ₃ , and the threaded part of the bending anchor part 4 is inserted into the embedded hole 7. F ₃ acts in the direction of pulling it out, and the terminal points C ₂ and C ₁ of the embedded hole 7
If the distance between the two points is R, then R×F ₂ acts as a bending moment on the C ₂ point. This bending moment acts on the fracture area of the stone plate due to the cross-sectional area surrounded by the fracture line B ₁ and the fracture line B ₂ shown in FIG. Next, if we look at the horizontal direction of the anchor bolt 5,
As shown in Fig. 4, when the back side of the stone plate 3' and the steel frame 1 are adjusted at a constant interval and the stone plate is fixed to the steel frame, stone plates with different thicknesses of _W1 and _W2 can be used. In this case, discrepancies (d) will occur on the stone slab wall surface, making the appearance undesirable.

In such a case, the tightening bodies 11, 11 are loosened, the stone plate is moved to eliminate the discrepancy at d, and then the tightening bodies 11, 11 are tightened to the anchor bolt 5 from both sides.

●Effects According to this invention, the pull-out strength acts on the fracture surface surrounded by the fracture surfaces _B1 and _B2 , so the pull-out strength is strong and stable as long as the strength of the stone plate does not change.

In general, adhesives have superior bonding strength against peeling forces that act in a direction parallel to the adhesive surface, compared to peeling forces that act in a direction perpendicular to the adhesive surface. .

A bent tip anchor portion 4 of an anchor bolt 5;
If the stone plate 3' is simply fixed with a filling material such as cement mortar in the embedded hole ₇ bent and drilled, the horizontal The anchor bolt 5 is easy to come off, but in this invention, the washer and the stone plate surface are anchored together with the anchor bolt with adhesive, so the washer and the stone plate can withstand the pulling force of _F3 . Since it is counteracted by the adhesive strength in the direction parallel to the adhesive surface of the surface, it absorbs the pulling force of F ₃ ,
This provides outstanding strength as an anchor bolt.

In addition, in the stone support structure of the present invention, the washer is integrally formed at the bent part of the anchor bolt so as to be perpendicular to the anchor bolt, so that the washer can be inserted in the direction of the embedded hole on the stone plate surface and pressed against the stone plate surface. For example, it is possible to correctly and easily erect the anchor bolt vertically without inclining the anchor bolt with respect to the stone plate surface without requiring a skilled technique.

Furthermore, since adhesive is applied to the joint surface between the stone plate and the washer, the tensile force acting between the stone plate and the anchor bolt is also dispersed to the adhesive area of the washer, preventing localized excessive tensile force on the stone plate. The tensile strength will increase without this effect.

Conventionally, the Weston anchor used in the prior art for fixing a stone plate has a female thread on the stone plate, so it is not possible to tighten the lower edge with the head bolt described in the above-mentioned Japanese Patent Publication No. 58-56789. Although it was possible, it was not possible to bury the anchor part of the anchor bolt instead of the female thread in the stone plate.

On the other hand, the stone plate support structure of the present invention has succeeded in embedding the male thread of the anchor part of the anchor bolt, and as a result, if the tightening body is loosened as shown in Fig. 4, the position of the stone plate can be slightly changed. It has numerous effects, such as being able to adjust the surface of a wall made of multiple stone slabs to a flat surface without any unevenness.

5 to 8 show the assembled state of the support structure of the present invention.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the support structure of the present invention, Fig.
The figures are a longitudinal sectional view taken along the line shown in Fig. 1, Fig. 3 is an explanatory diagram of the state of the applied force, Fig. 4 is a plan view illustrative of the position adjustment of the stone plate, Figs. 5, 6, 7, and 8. 1 shows an explanatory diagram showing an assembled state of the support structure of the present invention. In the figure, 1 is an upright frame body, 2 is its outer thin surface, 3 is a stone plate wall, 3' is a stone plate, 4 is a bending anchor part, 5 is an anchor bolt, 6 is its root, 7 is an embedded hole,
Reference numeral 8 indicates a filler, 10 indicates a fastening member for the insertion holes 11, 11, 13 indicates a washer, 14 indicates an insertion hole, and 15 indicates a fixed portion by welding or the like.

Claims (1)

[Claims] 1. On the outside of the outer slope of an upright frame such as a steel frame,
In buildings such as steel-frame buildings in which stone slab walls are constructed in parallel and upright at appropriate intervals, a refractive anchor part is formed on the upright frame of the structure so as to be bent diagonally upward at the tip edge. The base of the anchor bolt is tightened in the horizontal direction, and the bent anchor part at the tip edge of the anchor bolt is embedded in the diagonally upwardly inclined embedded hole drilled on the back side of the stone plate of the stone plate wall. , a washer anchored by a filling material such as cement mortar, inserted into the bent part of the bent anchor part orthogonally to the anchor bolt, and fixed by welding or the like, is attached to the stone plate wall. A support structure for a stone slab wall in a building such as a steel frame building, characterized in that it is in contact with the back side of the stone slab and is fixed integrally. 2. A support structure for a stone plate wall in a building such as a steel frame building according to claim 1, wherein the anchor bolt and washer are made of a metal material such as iron. 3 A male thread is carved in the bending anchor portion at the tip edge of the anchor bolt, and this male thread is
A support structure for a stone plate wall in a building such as a steel frame building according to claim 1, wherein the stone plate wall is anchored in the embedded hole by the filler. 4 A male thread is carved into the base of the anchor bolt, and the male threaded portion is inserted into an insertion hole provided in the upright frame of the building, and the male threaded portion is inserted into the upright frame on both sides. Claim 1, which is tightened and fixed by the female screw of the tightening body.
Support structure for stone slab walls in buildings such as steel-framed buildings as described in Section 1.