JP2829792B2 - Method of forming concrete layer bonded to steel member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a concrete layer joined to a steel frame member, and more particularly to a method for forming a concrete layer on a steel frame member by using a stud having a screw hole formed in a head having a diameter larger than the stem of the stud. The present invention relates to a method for forming a bonding.

[0002]

2. Description of the Related Art A conventional stud 1 having a large diameter head is
As shown in FIGS. 4 and 5, a small-diameter pillar-shaped stem 1a and a short-diameter cylindrical head 1b are integrally formed at the tip thereof, and the end face of the stem 1a of the stud 1 is As shown in FIG. 7, the surface of the steel member 2 is joined to the surface 2 a by welding or the like, and ready-mixed concrete is poured into a space between the surface 2 a of the steel member 2 and the surface 3 a of the form plate 3. 2 form a concrete layer that is firmly bonded. Also,
As shown in FIG. 6, a conventional stud 4 dedicated to fixing a separator rod is formed by providing a screw hole 4b at the center of one end of a short small-diameter cylindrical body 4a made of steel. As shown in FIG. 7, the end surface on the side without the steel plate is fixed to the surface 2 a of the steel frame member 2 by welding or the like, the separator rod 5 is passed through the hole of the form plate 3, and the screw portion at one end of the separator rod 5 Screw into the screw hole 4b of the dedicated stud 4, apply the support pipes 6A, 6B and the metal fitting 7 to the rear surface of the form plate 3, and screw the screw hole at one end of the form tie 8 into the other end of the separator rod 5, A nut 9 is screwed into the threaded portion at the other end of 8 to hold the form plate 3 at a predetermined distance from the steel frame member 2, and is poured into ready-mixed concrete in a space between the steel frame member 2 and the frame plate 3. To form a concrete layer by joining to the steel member 2 To have.

[0003]

The conventional stud 1 having a large-diameter head has a short large-diameter cylindrical head 1b integrally joined to the tip of a small-diameter columnar stem 1a. When a concrete layer is formed on the surface 2a side of the steel frame member 2 by welding the end face of the stem 1a to the surface 2a of the steel frame member 2 by welding or the like, the concrete layer is formed by the presence of the large-diameter head 1b. 2 can be firmly connected to the steel member 2 unless a stud 4 having a large diameter head and a stud 4 dedicated to fixing a separator rod are connected to the surface 2a of the steel member 2 by welding or the like. There is a disadvantage that the form plate 3 cannot be held at a certain distance. In addition, the conventional stud 4 dedicated to fixing the separator rod is fixed to the surface of the steel member 2 by welding or the like at the end surface on the side without the screw hole 4b.
Pass the separator rod 5 through the hole of the form plate 3
Is screwed into the screw hole 4b of the stud 4 so that the support pipes 6A and 6B and the metal fitting 7
When the screw hole at one end of the form tie 8 is screwed into the other end of the separator rod 5 and the nut 9 is screwed into the screw portion at the other end of the form tie 8, the form plate is separated from the surface of the steel frame member 2 by a predetermined distance. 3 can be held, but the stud 4 dedicated to stoppering the separator does not have a large-diameter head, and thus has a drawback that it does not have a function of firmly connecting the concrete layer to the steel frame member 2. The problem to be solved by the present invention is to provide a method of forming a concrete layer joined to a steel member which does not have the above-mentioned disadvantages, in other words, a stud having a screw hole in a large diameter head and a large diameter head. Provided is a method for forming a concrete layer joined to a steel frame member that can hold a form plate by a separator rod or the like and can firmly couple the steel frame member and the concrete layer by using a stud having no screw hole in a portion. It is in.

[0004]

The invention of this application employs the following constitution as means for solving the above-mentioned problems.
According to a configuration of the present invention, a base end of a stem of a stud having a screw hole in a head is fixed to a plurality of predetermined positions on a peripheral surface of a steel member disposed at a predetermined position by welding or the like, and At the desired number of positions on the peripheral surface of the stud, the base end of the stem of the stud having no screw hole in the head larger in diameter than the stem is fixed by welding or the like, and the threaded portion at the tip of the separator rod is screwed to the head. Screwed into the screw hole formed in the head with a larger diameter than the stem of the stud having a hole, the separator rod and the supporting material arranged on the rear surface of the mold plate are separated from the steel frame member by a predetermined distance to form the mold. A concrete layer joined to a steel frame member, wherein a concrete layer is formed by holding a plate and casting a ready-mixed concrete in a space between the steel frame member and the form plate, and joining the concrete layer to the steel frame member. In the method of forming. The stud with the head is made of metal, usually steel, and has a columnar stem and a columnar head with a diameter larger than the stem at the tip of the stem are integrally connected. The stud having a screw hole in the head is formed by forming a screw hole extending in the longitudinal direction of the stud at the center of the head having a larger diameter than the stem of the stud having the head.

[0005]

According to the present invention, a base end of a stem of a stud having a screw hole in a head is fixed at a plurality of predetermined positions on a peripheral surface of a steel frame member disposed at a predetermined position by welding or the like. At the desired number of positions on the peripheral surface of the member, the base end of the stem of the stud without a screw hole in the head with a diameter larger than the stem is fixed by welding or the like, and the thread at the tip of the separator rod is attached to the head. Screw the thread into the screw hole formed in the head with a larger diameter than the stem of the stud having the screw hole, and form the separator rod and the support material arranged on the rear surface of the form plate at a predetermined distance from the steel frame member. Holds a plate, casts ready-mixed concrete in the space between the steel frame member and the formwork plate, and joins the column steel frame to form a concrete layer. A stud dedicated to the rod is fixed to the surface of the steel frame by welding or the like. Work is not required to, can save the cost of the minute of the construction costs and the separator 杆止 Me dedicated stud.

[0006]

An embodiment is shown in FIGS. 1 to 3 and is an example in which the present invention is applied to a case in which a concrete layer is formed around a column-shaped steel frame having a closed (for example, box-shaped) cross section.
As shown in FIG. 2, a stud 10 having a screw hole in a head thereof has a columnar stem 10 a made of steel and a stem 10
A cylindrical head 10b having a diameter larger than that of the head 10a is integrally joined, and as shown in FIG.
A screw hole 10c extending in the longitudinal direction of 0 is used. As a stud 1 without a screw hole in the head, FIG.
A stud 1 having a conventional head in which a steel columnar stem 1a shown in FIG. 5 and a columnar head 1b whose diameter is shorter than the stem 1a at the tip thereof is integrally joined. use.

As shown in FIG. 1, there are screw holes in the head at a plurality of predetermined positions spaced apart from the peripheral surface 21a of a steel column 21 having a closed cross section made of steel built in a predetermined position. The base end of the stem 10a of the stud 10 is fixed by welding or the like, and the base end of the stem 1a of the stud 1 without a threaded hole in the head is located at a desired number of positions at intervals of the peripheral surface 21a. Fix by welding or the like. Separator rod 15
Through the through hole of the form plate 13 and screw the screw portion at one end of the separator rod 15 into the screw hole 10 of the head 10 b of the stud 10.
c, and the separator rod 15 is fixed. Form plate 1
3 and the support pipes 16A and 16B and the metal fitting 17 are applied to the rear face of the support pipe 3, and the screw hole at one end of the foam tie 18 is inserted into the separator rod 1.
5 is screwed into the other end of the form tie 18, and a nut 19 is screwed into the threaded portion at the other end of the form tie 18. The form plate 13 is held at a predetermined distance from the peripheral surface 21a of the columnar steel frame 21 having a closed cross section.
A concrete layer is formed by placing the ready-cast concrete into the space between the peripheral surface 21a of the column steel frame 21 and the formwork plate 3 and joining it to the peripheral surface 21a of the column steel frame 21. The base ends of the stems 1a and 10a of the studs 1 and 10 are firmly fixed to the peripheral surface 21a of the column steel frame 21 by welding or the like.
Since the diameters of b and 10b are larger than those of the trunks 1a and 10a, the concrete layer and the peripheral surface 21a of the column steel frame 21 are firmly joined. Unlike the prior art, it is not necessary to fix the stud dedicated to the separator rod to the surface 21a of the column steel frame 21 by welding or the like. Therefore, the number of times of fixing work such as welding is reduced, and the work becomes easier accordingly.

[0008]

According to the method for forming a concrete layer joined to a steel member according to the present invention, the stem of a stud having a screw hole at its head is provided at a plurality of predetermined positions on the peripheral surface of the steel member provided at predetermined positions. The base end is fixed by welding or the like, and the base end of the stem of the stud without a screw hole in the head larger in diameter than the stem is fixed to the desired number of positions on the peripheral surface of the steel member by welding or the like. And a threaded portion at the tip of the separator rod is screwed into the screw hole formed in the head having a larger diameter than the stem of the stud having a screw hole in the head, and the separator rod and the support provided on the rear surface of the form plate are screwed. With the material, a form plate is held at a predetermined distance from the steel frame member, a fresh concrete is poured into a space between the steel frame member and the form plate, and the concrete layer is joined to the steel frame member to form a concrete layer. Because it is formed, the stud dedicated to the separator rod stopper is made of iron Operation of fixing by welding or the like on the surface of the member is not necessary and the savings costs correspondingly construction costs and the separator 杆止 Me only stud. Also, the use of identical (or similar) studs simplifies stud fixation and stud management, saving money.
In addition, since the stud with a screw hole in the head has a larger diameter than the trunk, the concrete layer formed by joining to the steel frame member is used as the large diameter head of the stud, which is a shear connector. Due to the presence of the portion, it can be firmly connected to the steel frame member. The state of connection between the formed concrete layer and the steel frame member is the same as that obtained by using a conventional stud dedicated to locking the separator and a stud having a large-diameter head having no screw hole.

[Brief description of the drawings]

FIG. 1 is a side view of a longitudinal section of a column steel frame and the like showing the relationship between a column steel frame having a closed cross section and studs, separator rods, form plates, etc. of an embodiment.

FIG. 2 is a side view of a stud having a screw hole on a large diameter head used in the embodiment.

FIG. 3 is a plan view of FIG. 1 taken along the line aa.

FIG. 4 is a side view of a conventional stud having a large diameter head.

FIG. 5 is a plan view of FIG. 4 taken along the line bb.

FIG. 6 is a side view of a conventional stud dedicated to locking a separator.

FIG. 7 is a side view of a conventional steel column having a closed cross section and showing a relation between a stud, a separator rod, a form plate, and the like, in a longitudinal section of the column steel column.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stud without a screw hole in a large diameter head 10 Stud with a screw hole in a large diameter head 10a Trunk 10b Head 13 Form plate 15 Separator rod 16A Supporting pipe 16B Supporting pipe 18 Form tie 19 Nut 21 Pillar steel frame 21a with closed section

Continued on the front page (72) Inventor Toshiaki Oda 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Inside the Tokyo Head Office (72) Inventor Takaaki Hiroshige 82-1-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Inside the Tokyo Head Office (56) References JP-A-1-271554 (JP, A) JP-A-62-206135 (JP, A) JP-A-60-68141 (JP, U) JP-A-62-131507 (JP, A) U) Jikken Sho 41-17779 (JP, Y1) JP-B 62-33372 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04B 1/30 E04B 1/16 E02D 29 / 02 309 E02D 5/20 102

Claims (1)

(57) [Claims] A predetermined plurality of positions in the circumferential surface of claim 1] arranged in a predetermined position the steel member, the proximal end of the stem of the stud with a threaded hole in the head and fixed by welding or the like, and the steel member At the desired number of positions on the peripheral surface, the base end of the stem of the stud having no screw hole in the head larger in diameter than the stem is fixed by welding or the like, and the screw portion at the tip of the separator rod is screwed into the head. screwed into the screw holes formed in the head portion of larger diameter than the stem of the stud with at支保Industrial material arranged on the rear surface of the separator rod and mold plate, the mold plate and release a predetermined distance from said steel member holds, the a space between the steel member and the mold plate raw concrete and Da設, concrete layer bonded to the steel member, characterized in that to form the concrete layer is bonded to said steel member Forming method.