JP2000170285A - Connecting method for steel sheet concrete structural wall and junction structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the construction period, reduce the cost and easily secure execution precision by simply connecting a steel sheet panel forming a steel sheet concrete structural wall at a site. SOLUTION: A reinforcing plate 6 with a gusset plate 7 is fitted in advance to the junction of a steel sheet panel P forming a steel sheet concrete structural wall, the steel sheet panels P are erected, then the gusset plates 7 of the adjacent steel sheet panels P are fastened together by a splice plate 8 and high- strength bolts/nuts 9. Concrete 2 is placed in the steel sheet panels P, constraint bars 15 are arranged in a bolt junction surrounded by form steel sheets 12 and a wooden form, and concrete 11 is placed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method and a joining structure for a steel plate concrete structure wall used as a shear wall of a structure or the like.

[0002]

2. Description of the Related Art Steel plate concrete structure walls (SC walls) are:
It is known that the structure has a structure in which concrete is covered with two surface steel plates, and the surface steel plate bears the tensile force and the concrete bears the compressive force, and has excellent strength and deformation performance.
In addition, the steel plate can be panel-processed (precast) at the factory, and the steel plate can be used as a substitute for the formwork during concrete casting, so that labor saving on site work can be greatly expected.

FIG. 5 shows an example of the basic structure of the SC wall, which is mainly composed of two surface steel plates 1 and 1 which are arranged to face each other at a predetermined interval, and between the surface steel plates 1 and 1. Stud bolts (in some cases, shaped steel, etc.) 3 which are cast on the inner surface of a steel plate 1 and which are implanted on the inner surface of the surface steel plate 1 to join and integrate the surface steel plate 1 with the internal concrete 2.
It is composed of Further, the two surface steel plates 1 and 1 are connected by a shear bar (tie rod) 4 to prevent deformation of the steel plates due to lateral pressure during concrete casting. The shaver 4 may be used also as a headed stud bolt.

[0004] Among such SC walls, a steel member 1,
For methods 3 and 4, etc., it is effective to perform panel processing at a factory from the viewpoint of labor saving of site work and shorten the construction period, assemble the steel sheet panel P at the construction site, and fill the inside with concrete 2. In addition, a reinforcing material 5 composed of a pair of angle members and a connecting plate is attached to both ends of the steel sheet panel P as a shape retaining material when the steel sheet panel P is suspended and installed at the site.

[0005] In the above-mentioned steel sheet panel P, the width of the earthquake-resistant wall within one span is limited due to restrictions on the width that can be manufactured of the steel sheet and the weight and size during transportation when precasting such as panel processing is performed. It is inevitable that the steel sheets are transported after being divided into steel plate panels of about 2 to 3 m, and the steel sheets are joined together on site. Conventionally, it has been general to join surface steel plates by welding (butt-welding) at the joints between the panel-processed steel plate panels and the column and the steel plate panels.

[0006]

However, the quality of welded joints is greatly affected by the weather conditions (rain, wind) and the skill of the welder. This must be anticipated, which hinders the shortening of the construction process and increases costs. In addition, when the surface steel plate of the steel plate panel is completely welded four times,
Since there is no escape of distortion due to welding heat, it is also very difficult to ensure accuracy, such as causing deformation of the entire frame.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to make it possible to easily join steel plate panels constituting a steel plate concrete structure wall on site, to shorten the construction period and to reduce the construction period. An object of the present invention is to provide a joining method and a joining structure of a steel plate concrete structure wall which can reduce the cost and can easily secure the construction accuracy.

[0008]

According to the present invention, a reinforcing plate having a gusset plate is attached to a joint of steel plate panels constituting a steel plate concrete structure wall, and the steel plate panel is attached to the steel plate concrete structure wall. After the erection, the gusset plates of the adjacent steel panels are fastened to each other using high-strength bolts and nuts, and concrete is poured into the interior of the steel panel and the inside of the bolt joint.

[0009] The joint structure of the steel plate concrete structure wall of the present invention comprises a reinforcing plate attached to a joint portion of a steel plate panel constituting the steel plate concrete structure wall, a gusset plate protruding from an outer surface of the reinforcing plate, and an adjacent gusset plate. Having a splice plate attached to the side of the gusset plate of the matching steel panel, high-strength bolts and nuts for fastening the gusset plate and the splice plate, and concrete cast between reinforcing plates of adjacent steel panels It is characterized by.

[0010] In the above configuration, the gusset plates of the built-in adjacent steel plate panels are fastened with high-strength bolts and nuts via the splice plate, and the construction is simplified compared to the conventional welding connection. In addition, the construction period can be shortened and the cost can be reduced, and the welding accuracy can be ensured without causing welding distortion as in the related art. The load-bearing mechanism of a steel plate concrete structure wall consists of a concrete compression strut in an oblique direction of 45 degrees and a tensile force of a surface steel plate balanced with the compression strut. Is transmitted, and the stress of the surface steel plate is transmitted via a reinforcing plate, a gusset plate, and a splice plate, thereby ensuring excellent load-bearing performance of the steel plate concrete structure wall.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIGS. 1, 2 and 3 are plan sectional views showing an example of a joint structure when steel plate panels are horizontally joined in a steel plate concrete structure wall of the present invention. FIG. 4 is a side cross-sectional view showing an example of a joint structure when vertically joining steel plate panels.

1 to 3, the basic structure of a steel plate panel P constituting a steel plate concrete structure wall is the same as the conventional one, and two surface steel plates 1, 1 and a large number of headed stud bolts (or And a shaver (tie rod) 4.

In the present invention, a reinforcing plate 6 having a gusset plate 7 for bolt connection is previously attached to a joint end portion of such a steel plate panel P by welding at a factory or the like, and the adjacent steel plate is installed at the time of building. The gusset plates 7 of the panel are joined to each other with a splice plate 8 and a high-strength bolt / nut 9.

The reinforcing plate 6 is a continuous plate material that closes the opening at the joint end of the steel plate panel P, and a gusset plate 7 is vertically attached by welding or the like to the center in the width direction of the outer surface of the panel. A large number of headed stud bolts 10 are vertically welded to both sides of the panel outside and inside the panel. Both side surfaces of such a reinforcing plate 6 are abutted against the inner surface of the end of the surface steel plate 1 and fixed by welding. The reinforcing plate 6 can also be used as a shape maintaining material when the steel plate panel P is suspended.

Bolt holes are formed in the gusset plate 7 and the splice plate 8 in advance, and adjacent steel plates P, P are erected, and both sides of the continuous gusset plates 7, 7 with a slight gap therebetween. A splice plate 8 is attached to the surface, and the gusset plate 7 and the splice plate 8 are fastened with high strength bolts / nuts 9.

Incidentally, the load-bearing mechanism of the steel plate-concrete structure earthquake-resistant wall consists of a compression strut of the internal concrete 2 inclined at an angle of 45 degrees and a tensile force of the surface steel plate 1 balanced with the strut. Therefore, it is necessary for the compression struts of the concrete to be transmitted to the joint portion in order to ensure excellent load-bearing performance. Therefore, in the present invention, such that the compression strut is transmitted through the joint,
Concrete 11 is also cast at the bolted joints between adjacent reinforcing plates 6, 6. Therefore, adjacent surface steel sheets 1, 1
A steel plate 12 is provided in between, and this steel plate 12 is used as a mold. The steel plate 12 is provided on a support piece 13 provided on the side of the reinforcing plate 6.
And fix the end of the steel plate 12 to the end of the reinforcing plate 6 by welding or the like. Further, a stud bolt 14 with a head is vertically attached to the center of the inner surface of the steel plate 12.

Further, in this bolt joint, the stress of the surface steel plate 1 that resists the compression strut is transmitted through the reinforcing plate 6, the gusset plate 7, and the splice plate 8. Accordingly, since the form steel plate 12 of the concrete 11 may be a member that only resists the lateral pressure at the time of concrete casting, it may be attached to the surface steel plate 1 by simple welding or the like that can withstand the lateral pressure. In addition, a wooden formwork such as a reinforced concrete structure wall (RC wall) can be used depending on the situation. Therefore, advantages such as shortening of the construction period and cost reduction by the bolt connection of the present invention are not impaired.

However, in order to secure toughness during large deformation, a restraining bar 15 such as a spiral bar is provided as a measure for preventing the concrete 11 from peeling. In FIG. 1, the spiral reinforcing bar 15 is circular in plan view.
Are attached to the tips of the stud bolts 10 and 14 with heads. In FIG. 2, a spiral reinforcing bar 15 having a rectangular shape in a plan view and having straight reinforcing bars at four corners is used. 3A and 3B, two form steel plates 12 are connected by a tie bar 16 or the like to restrict the deformation of the form steel plates 12 out of the plane, thereby preventing concrete from peeling. In this case, the work of arranging the spiral rebar can be eliminated.

The steel sheet panels having the above structure are joined in the following procedure (see FIGS. 1 and 2). (1) In a factory or the like, a gusset plate 7 and a headed stud bolt 1 are attached to a joint end of a steel sheet panel P composed of a surface steel sheet 1, a headed stud bolt 3 and a shaver 4 in a factory or the like.
0. The reinforcing plate 6 having the support piece 13 is attached by welding.

(2) The steel plate P with the reinforcing plate 6 is erected at a predetermined position on the site, and spliced plates 8 are attached to the gusset plates 7 of the adjacent steel plate P from both sides.
Gusset plate 7 and splice plate 8
With high strength bolts and nuts 9. At this time, the high-strength bolts / nuts 9 are used to prevent the high-strength bolts / nuts 9 from interfering with the headed stud bolts 10 of the reinforcing plate 6 during the bolting.
It is necessary to shift the position of the nut 9 and the headed stud bolt 10 in the vertical direction. If this is not possible, the gusset plate 7 is made longer than the headed stud bolt 10 to shift the bolting position in the horizontal direction.

(3) A form steel plate in which a spiral reinforcing bar 15 is inserted laterally between the reinforcing plates 6 and 6 and arranged at the tips of the headed stud bolts 10 and 10 and the headed stud bolts 14 are implanted. 12 is positioned by the support piece 13 and welded to the end of the reinforcing plate 6.

(4) The internal concrete 2 is cast inside the steel plate panel P, and the concrete 11 is cast into the bolt joints surrounded by the reinforcing plates 6 and the form steel plates 12.
In the case of FIG. 3, after the gusset plates 7, 7 are bolted, a tie bar 16 is attached in place of the spiral reinforcing bar 15, but the tie bar 16 has a through hole formed in the splice plate 8 in advance, and the tie bar 16 passes through the through hole. It is attached to the splice plate 8 by stud welding or the like.
Then, after the form steel plate 12 is plug-welded to the tip of the tie bar 16, the concrete 11 is poured.

Although the case where the steel plate panels P are joined in the horizontal direction has been described above, the case where the steel plate panels P are joined up and down is performed as follows. The structure and the assembly procedure of the joint are the same as those in the case of the lateral joining, but as shown in FIG. 4, holes 20 for concrete filling are formed in the upper and lower reinforcing plates 6, 6 and the upper and lower steel plates are formed. The concrete is filled together with the concrete in the panel P, or a hole 21 is formed in the form steel plate, and mortar or the like is press-fitted.

[0024]

As described above, according to the present invention, a reinforcing plate having a gusset plate is previously attached to a joint portion of a steel plate panel constituting a steel plate concrete structure wall, and after the steel plate panel is built, an adjacent steel plate is installed. Since the gusset plates of the panels are joined together using high-strength bolts and nuts and concrete is poured into the inside of the steel plate panel and the inside of the bolt joint, the following effects can be obtained.

(1) Since the gusset plates of the steel plate panel are fastened to each other with high-strength bolts and nuts via a splice plate, the construction is easier, the construction period is shortened, and the cost is reduced as compared with conventional welding. can do.

(2) Since welding distortion unlike the conventional case does not occur, the construction accuracy can be easily secured, and a steel plate concrete structure wall having excellent load-bearing performance can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing an example of a joint structure when steel plate panels are horizontally joined in a steel plate concrete structure wall of the present invention.

FIG. 2 is a plan view showing an example in which the shape of restraint bars arranged in a bolt joint in the joint structure of FIG. 1 is different.

FIG. 3 is a plan sectional view showing an example in which a tie bar is provided instead of a restraining bar in the joint structure of FIG. 1;

FIG. 4 is a side cross-sectional view showing one example of a joint structure when vertically joining steel plate panels in the steel plate concrete structure wall of the present invention.

5A is a plan view and FIG. 5B is a perspective view showing a basic configuration of a steel plate panel constituting a steel plate concrete structure wall.

[Explanation of symbols]

 A ... Steel plate 1 ... Surface steel plate 2 ... Inner concrete 3 ... Stud bolt with head 4 ... Shaver (tie rod) 5 ... Reinforcement 6 ... Reinforcement plate 7 ... Gusset plate 8 ... Splice plate 9 ... High strength bolts and nuts 10... Stud bolts with heads 11... Concrete 12... Steel plates 13... Support pieces 14... Stud bolts with heads 15. ... Hole 21 ... Hole

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroaki Yamatani 2-19-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd. F-term (reference) 2E002 FA02 FA06 FB02 FB08 FB11 GA02 GA10 HA03 HB05 JC02 JC03 JD05 MA01 2E125 AA54 AD01 AE04 AE06 AE13 AE18 AG07 AG25 AG41 BA07 BA25 BA26 BA32 BB01 BB08 BB09 BB12 BB22 BB27 BC09 BD01 BE07 BE08 BF04 CA05 CA06 CA19 CA90 EA33 EB00

Claims (2)

[Claims] 1. A reinforcing plate having a gusset plate is attached in advance to a joint portion of steel plate panels constituting a steel plate concrete structure wall, and after the steel plate panel is erected, the gusset plates of adjacent steel plate panels are subjected to high strength. bolt·
A method for joining a steel plate-concrete structure wall, comprising fastening with a nut and placing concrete inside a steel plate panel and a bolt joint. 2. A reinforcing plate attached to a joint of steel plate panels constituting a steel plate concrete structure wall, a gusset plate projecting from an outer surface of the reinforcing plate, and a side plate of a gusset plate of an adjacent steel plate. A splice plate, a high-strength bolt / nut for fastening the gusset plate and the splice plate, and concrete cast between reinforcing plates of adjacent steel panels. Construction.