JP2662138B2 - Basic anchoring structure of steel plate concrete structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel plate concrete block formed by casting concrete between a pair of opposed steel plates (hereinafter referred to as a "steel plate unit") and integrating them. The present invention relates to a foundation anchoring structure of a steel plate concrete structure during construction.

[0002]

2. Description of the Related Art A concrete concrete block is cast between steel plates of a steel plate unit and integrated into a wall block. Steel plate concrete structures (hereinafter referred to as SC structures) combined with column blocks have been put to practical use.

[0003] The fixing method of these SC structures to the foundation concrete is roughly classified into a difference streak method and an anchor bolt method. For example, when fixing the wall block by the streaking method, as shown in FIG. 4, the reinforcing bars 5 of the reinforcing bars are arranged so as to straddle the portion of the foundation concrete 6 and the portion of the concrete 3 of the wall block 4. After the foundation concrete 6 has hardened, a steel plate unit composed of two steel plates 1 and 1 on which the stud bolts 2 have been planted is installed so as to wrap the projecting streaks 5 and the concrete 3 is hit inside. Set up and wall block 4
And is fixed to the foundation concrete 6. Also,
In the case of anchoring by the anchor bolt method, as shown in FIG. 5, an anchor bolt 7 is buried in the foundation concrete 6 and a base base 8 fixed to the lower end of the steel plate unit is fastened to the anchor bolt 7 so that the steel plate unit is fixed. After fixing to the concrete 6, the concrete 3 is cast inside the concrete 6 to form the wall block 4 and is fixed to the foundation concrete 6.

[0004]

The fixing means using the streaking method described above, when a steel sheet unit composed of two steel sheets 1 having stud bolts 2 protruding from the inner surface is suspended and installed, the fixing means differs from the stud bolts 2. In a narrow construction site, the construction may not be possible in a narrow construction site where the striations 5 interfere with the construction. In addition, in the anchoring method using the anchor bolt method, the base gantry 8 must be formed and sufficient accuracy must be ensured, and the processing of the anchoring joint becomes complicated, and the amount of steel material of the anchor bolt, the anchoring joint, the base gantry, etc. increases. There were problems such as doing.

The present invention has been made in view of the above problems. It is an object of the present invention to propose a basic fixing structure of an SC structure capable of improving the efficiency of the basic fixing work and reducing the processing time and the amount of steel material of the fixing connection.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a foundation fixing structure for an SC structure. According to the first aspect of the present invention, both ends are fixed to the foundation concrete and are collectively set on the foundation concrete. After installing the steel sheet unit with the high-strength fiber yarn interposed therebetween, pulling up the middle part of the high-strength fiber yarn and fixing the high-strength fiber yarn in an inverted U-shape, concrete between each steel plate of the steel plate unit Characterized by being cast.

According to a second aspect of the present invention, a pair of steel plates is provided with a fixing portion on the foundation concrete interposed therebetween, and the high-strength fiber yarn is formed between the fixing portion on the foundation concrete and the lower fixing portion on the inner side of each steel plate. After binding by a strip, concrete is poured between a pair of steel plates.

The invention described in claim 1 is an improvement of the conventional reinforcing bar system, in which a high-strength fiber yarn is used as the reinforcing bar instead of the conventional reinforcing bar. Since the high-strength fiber yarn is lightweight and highly flexible, the middle part of the yarn whose both ends are fixed to the base concrete can be left in a free shape on the base concrete, and the number of yarns is large. And, even if each thread is considerably long, it can be wound, bundled or folded,
The steel plate unit can be placed on the foundation concrete in a shape that does not hinder the hanging of the steel plate unit. If the steel plate unit is suspended and installed with the yarn stood still in this shape, the steel plate unit is smoothly installed at a predetermined position. Then, pull up the middle part of the thread and place concrete between the steel plates of the steel plate unit with the thread fixed in an inverted U-shape. The thread is buried and fixed in the concrete and functions as a streak. Demonstrate. Various obstacles due to the long length of the conventional reinforcing bars protruding from the foundation concrete are eliminated.

The invention according to claim 2 is an improvement of the conventional anchor bolt system. Instead of the conventional bolt connection between the anchor bolt and the base frame, the foundation concrete and the inner surface of the lower part of the steel plate are bound with a high-strength fiber yarn. This eliminates the need for welding the base frame and processing the fixing joint that requires precision.
The degree of freedom of construction is high, and work efficiency can be improved. In addition, to fix the fiber thread to the foundation concrete, it is necessary to arrange a fixing material for fixing the thread before placing the foundation concrete and bury it in the concrete. Construction becomes easier.

In the present invention, a pair of steel sheets means a steel sheet unit which is installed on a foundation concrete as a so-called steel sheet unit, and includes a steel sheet assembled in a cross-girder shape.

The high-strength fiber referred to in the present invention is a continuous yarn having a high tensile strength and a high tensile modulus, and having excellent durability and alkali resistance. Aromatic polyamide fibers (aramid fibers), carbon fibers and the like are preferably used.

These high-strength fibers are used as yarns in the form of braids, tows, twisted yarns and the like. Also, tow yarns coated with a thermosetting resin such as an epoxy resin, or flat yarns,
Alternatively, a fiber reinforced plastic (F
(RP) material. However, in the invention described in claim 1, a rigid material is not used. In any case, a material having a tensile strength equal to or higher than that of a conventional differential bar or anchor bolt is used. Claim 1
In, the length of the thread buried in the concrete is a length that can obtain the fixing strength commensurate with the tensile strength of the thread,
It is set according to the bond strength with concrete.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the basic fixing of a wall block of an SC structure will be described below.

FIGS. 1 and 2 show an embodiment of the present invention.

The description will be made according to the order of construction.

(1) Prior to placing the foundation concrete 6, a plurality of tubular fixing members 10 are arranged in two rows together with a lattice-shaped reinforcing bar 9 and embedded and fixed in the foundation concrete 6. The upper end of the fixing material 10 is exposed on the surface of the foundation concrete 6. (See FIG. 2) (2) Both ends of the aramid fiber braid 11 are inserted and fixed into wedge-shaped grip portions inside the cylindrical shape of the fixing members 10 facing each other. Braid 11 lying on foundation concrete 6
The middle part of the unit is gathered small and is left at a position where it will not hinder the hanging installation of the steel plate unit later.

(3) A steel plate unit composed of two steel plates 1 and 1 with stud bolts 2 implanted on the inner surface is suspended on the foundation concrete 6 with a plurality of braids 11 arranged in two rows interposed therebetween. Install.

(4) The middle portion of the braid 11 that has been gathered small is pulled up, and the braid 11 is shaped into a non-loose inverted U-shape and fixed.

(5) The concrete 3 is cast between the steel plates 1 and 1 and integrated to form the wall block 4 having the SC structure fixed to the foundation concrete 6. FIG. 3 shows an embodiment of the present invention.

An aramid fiber braid 11 is formed by fixing the fixing material 10 buried and fixed in the foundation concrete 6 and the fixing hook 12 protruding below the inner side surface of the steel sheet 1 in the same manner as in the above (1).
Is united by In this example, the lower ends of the two braids 11 are fixed to one fixing material 10 buried in the foundation concrete 6, the fixing hooks 12 protruding from the lower inner surface of the steel plate 1, and the two fixing materials 10 adjacent to each other. After fixing the upper ends of the fixed two braids 11 without loosening, the concrete 3 is cast between the steel plates 1 and 1 and integrated to form the SC block wall 4 fixed to the foundation concrete 6. .

The upper and lower ends of a thread such as a braid are fixed by gripping with a wedge or the like so as not to form a knot or a bent portion, thereby preventing a reduction in strength due to the knot or the like.

Further, the lower end of the braid 11 may be fixed to the fixing member 10 before the steel plate unit is suspended, and the upper end of the braid 11 may be fixed to the fixing hook 12 after the steel plate unit is suspended. You may go at the same time.

[0023]

The present invention is as described above. Claim 1
In each of the inventions described above and the invention described in claim 2, the fixing work of the steel plate unit can be simplified, and the work amount is reduced. In addition, the high-strength fiber yarn is lightweight and flexible, and can be easily transported and handled, and the workability is improved.

According to the second aspect of the present invention, the structure is simpler than that of the conventional anchor bolt system, and the amount of steel material and the processing time can be reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view (a) and a front sectional view (b) of a wall block according to an embodiment of the present invention.

FIG. 2 is a side sectional view (a) and a front sectional view (b) of a foundation concrete in which a fixing material is embedded.

FIG. 3 is a side sectional view (a) and a front sectional view (b) of a wall block according to an embodiment of the present invention.

FIG. 4 is a side sectional view of a wall block fixed by a conventional streaking method.

FIG. 5 is a side sectional view of a wall block fixed by a conventional anchor bolt method.

[Explanation of symbols]

1 ... steel plate, 2 ... stud bolt, 3 ... concrete, 4
... wall blocks, 5 ... bars, 6 ... foundation concrete, 7 ...
Anchor bolts, 8: Foundation frame, 9: Reinforcing bar, 10: Fixing material, 11: Aramid fiber braid, 12: Fixing hook.

Claims (2)

(57) [Claims] 1. A pair of steel plates are placed with a high-strength fiber thread fixed at both ends to a foundation concrete and put together on the foundation concrete, and a middle part of the high-strength fiber thread is pulled up. And fixing the high-strength fiber yarn in an inverted U-shape and then casting concrete between a pair of steel plates. 2. A pair of steel plates are installed with a fixing portion on the foundation concrete interposed therebetween, and after the fixing portion on the foundation concrete and a fixing portion on the lower inside of each steel plate are bound by a high-strength fiber yarn, A foundation fixing structure for a steel plate concrete structure, wherein concrete is cast between a pair of steel plates.