JPH06173370A - Constructing method of steel-plate concrete wall - Google Patents

Abstract

PURPOSE:To shorten the term of work by forming a unit by a pair of surface steel plates arranged in parallel and a partition wall, passing a connecting reinforcement into a through-hole formed to the partition wall and mutually connecting the adjacent units. CONSTITUTION:A plurality of horizontal shear plates 13a positioned on the outsides of partition walls 5 and extended left and right are installed at both left and right end sections between a pair of surface steel plates 3, and notches 14 are formed to each horizontal shear plate 13a. A plurality of vertical shear plates 13b are mounted at both upper and lower end sections between the surface steel plates 3, and band-shaped reinforcement receiving plates 17 are welded among each of the vertical shear plates 13b and the partition walls 5. Connecting reinforcements 19 are inserted into the through-holes of the reinforcement receiving plates 17 and the partition walls 5 and left and right units 1 are joined mutually, and concrete is placed between a pair of the surface steel plates 3. Accordingly, the connecting operation of the units can be facilitated.

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 wall suitable for use in large-scale structures such as nuclear facilities.

[0002]

2. Description of the Related Art Conventionally, for a large structure having a concrete wall thickness of 1 m or more, such as a nuclear facility, a single unit made by welding a pair of surface steel plates with a bulkhead is preliminarily used in a factory or the like. After making it, after adhering multiple units of this unit adjacent to each other at the wall construction site and joining them continuously,
Construction is performed by placing concrete between both surface steel plates.

FIG. 4 and FIG. 5 show a unit 1 in the above-mentioned conventional steel plate concrete wall. As shown in the figure, the unit 1 has a pair of surface steel plates 3 arranged in parallel with each other, and the parallel state between them. Is held and a pair of partition walls 5 extending in the vertical direction are welded. In addition to the partition wall 5, a shear bar 7 for withstanding a lateral pressure at the time of pouring concrete is welded between the both surface steel plates 3, and the back side of each surface steel plate 3 is further integrated with concrete. A stud bolt 9 for maintaining the above is welded.

[0004]

By the way, after the above unit 1 is manufactured in a factory, it is transported to a construction site and vertically and horizontally combined, and the surface steel plates 3 of each unit 1 are welded to each other on site. However, this welding 11 must be performed along the line where the surface steel plates 3 are in contact with each other, and a skilled worker having a certain level of skill is required. Whether or not the welding work can be performed is not only affected by the weather, but the quality of the welded part also fluctuates depending on the weather.Furthermore, because the weather is bad, welding along the line does not work well, or welding is not possible. There was a possibility that it might not be there.

The present invention has been made to solve the above problems, and an object thereof is to provide a steel plate concrete wall which can be constructed with stable quality without being affected by the weather and the skill of a skilled worker. It is in.

[0006]

In order to achieve the above object, a first invention according to claim 1 is that a pair of surface steel plates arranged in parallel is provided between them in the vertical direction. Steel plate concrete constructed by joining at least a pair of partition walls to form a single unit, adjoining a plurality of the units adjacent to each other at the construction site of the wall body, and placing concrete between the surface steel sheets. In the method of constructing a wall, a plurality of lateral shear plates extending laterally are provided at the left and right end portions between the surface steel plates and located outside the partition wall,
A plurality of vertical shear plates extending vertically in parallel with the partition wall are provided at both upper and lower end portions between the surface steel plates, a through hole is formed in the partition wall, and a joining rebar is provided in the through hole of each unit adjacent to the left and right. After inserting and joining the left and right units to each other with the joining rebar, after placing concrete between both surface steel sheets, as a joining rebar for joining the upper and lower units to each other above the placing surface Is provided.

In order to achieve the above object, a second invention according to claim 2 is that at least a pair of surface steel plates arranged in parallel are provided along the vertical direction between them. A method for constructing a steel plate concrete wall in which a single unit is formed by joining with a partition wall, a plurality of the units are adjacently joined at a construction site of a wall body, and concrete is placed between both surface steel sheets to construct. A plurality of lateral shear plates located laterally outside the partition wall are provided at both left and right end portions between the surface steel plates, and vertically extending parallel to the partition wall at upper and lower end portions between the surface steel plates. A plurality of vertical shear plates are provided, and a strip-shaped reinforcing bar receiving plate extending in the left-right direction is provided between the partition wall and the vertical shear plate, and a through hole is formed between the reinforcing bar receiving plate and the partition wall. Joining rebars are inserted into the through holes formed in the partition walls of adjacent units to join the left and right units to each other by the joining rebars, and the joining rebars are inserted into the through holes formed in the reinforcing bar receiving plates of vertically adjacent units. It is characterized in that the upper and lower units are joined to each other through the joining rebar and the concrete is placed between both surface steel plates after the joining.

Further, it is desirable that the transverse shear plate is formed with a notch for smoothly pouring concrete.

[0009]

In the first aspect of the invention, the units adjacent to each other on the left and right sides are joined to each other by passing the joining reinforcing bars through the through holes formed in the respective partition walls. Even if these joining rebars are welded, it is not necessary to perform difficult welding along the line where the surface steel sheet is in contact, unlike the conventional case. In addition, the vertically adjacent units are joined to each other by placing concrete reinforcing rods as joining reinforcing bars on the placing surface after placing concrete. Then, the joint reinforcing bar connecting the left and right units and the joint reinforcing bar connecting the upper and lower units, the surrounding concrete is constrained by the surface steel plate and the partition wall or shear plate, so that the adhesion strength with the concrete increases, Even if the joining rebars of the respective units are yielded at the joining surface position, they are restrained and reinforced from the surroundings so that they do not come out, and the bond length can be shortened as much as possible.

According to the second aspect of the invention, the units adjacent to each other on the left and right sides are joined to each other by passing the joining reinforcing bars through the through holes formed in the respective partition walls, and the units adjacent to each other vertically are joined to the respective reinforcing bar receiving plates. This is done by passing the joint reinforcing bar through the through hole formed in the. Even in this case, similarly to the first invention, even if these joining reinforcing bars are to be welded, it is not necessary to perform difficult welding along the line where the surface steel sheet comes into contact, unlike the conventional case. And, in the joint rebar connecting the upper, lower, left and right units, the surrounding concrete is constrained by the surface steel plate and the partition wall or shear plate, so that the adhesion strength with the concrete becomes large, and if the joint surface of each unit joins them Even if the rebar yields, it does not slip out because it is restrained and reinforced from the surroundings, and the bond length can be made as short as possible.

Further, in both the first and second inventions, the notch is formed in the lateral shear plate, so that concrete can be smoothly poured into the unit joint portion during concrete pouring.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The figure is an example of a unit 1 prefabricated in a factory to construct a steel plate concrete wall of a nuclear facility.

A pair of surface steel plates 3 forming both surfaces of the steel plate concrete wall are arranged in parallel to each other, and a partition wall 5 as a connecting material between them is welded between the surface steel plates 3. Two or more partition walls 5 (see the drawing) or three or more partition walls 5 are provided, and the partition walls 5 are arranged along the up-down direction and welded to both surface steel plates 3 at right angles, thereby connecting the surface steel plates 3 to each other.

A plurality of lateral shear plates 13a are welded between the both surface steel plates 3 at the left and right ends thereof. The horizontal shear plate 13a is formed by the partition wall 5
Are provided on the outer side of the partition wall 5 and extend rightward and leftward at right angles to the partition walls 5, and a plurality of them are arranged side by side at appropriate intervals in the vertical direction. Further, each of the lateral shear plates 13a is formed with a notch 14 for smoothing the flow at the time of pouring concrete, and in the present embodiment, the notch 14 is formed in an elliptical shape.

Further, a plurality of vertical shear plates 13b are welded between the both surface steel plates 3 at both upper and lower end portions thereof. This vertical shear plate 13b is provided with the partition wall 5.
It is provided so as to extend in the up-down direction in parallel with, and a plurality of them are provided side by side at appropriate intervals on the left and right.

Further, a plurality of stud bolts 9 for maintaining the integrity with the concrete are provided on the backsides of the peripheral portions of the both surface steel plates 3. However, this stud bolt 9
May be abolished if there is no particular need in terms of strength.

A strip-shaped reinforcing bar receiving plate 17 extending horizontally is welded between each of the partition wall 5 and the vertical shear plate 13b. This rebar plate 17
Has a large strength, but has a through hole for passing the reinforcing bar 19. Then, such a through hole is also formed in the partition wall 5.

When joining the unit 1 of this embodiment,
After arranging the units 1 adjacently in the vertical and horizontal directions, the joining reinforcing bars 19 are vertically passed through the through holes of the reinforcing bar receiving plate 17 between the units 1. Further, the joining reinforcing bar 19 is passed in the left-right direction through the through hole formed in the partition wall 5 of each unit 1. Each joining rebar 19 can also be welded if necessary after being passed through the through hole.

After the units 1 have been joined in this way, concrete is placed between the pair of surface steel plates 3 to construct a steel plate concrete wall.

As described above, according to the method for constructing a steel plate concrete wall of this embodiment, the joining of the units 1 is
Since it is performed by passing the joining rebar 19 through the through hole of the partition wall 5 in the left-right direction and through the through hole of the rebar receiving plate 17 in the up-down direction, it is difficult to perform along the line where the surface steel plate 3 contacts as in the conventional case. No welding 11 (FIG. 4) is required. For this reason, joining can be performed without depending on the skill of a skilled worker who performs welding. Further, it is not necessary to perform time-consuming welding along a long line with which the surface steel sheet 3 is in contact, and therefore, the welding work can be performed regardless of the weather. Therefore, the construction period for constructing the steel plate concrete wall can be shortened, and the cost of the steel plate concrete wall can be reduced. However,
Joined reinforcing bars passed through the through-holes may be welded if necessary, or surface steel sheets may be temporarily fixed by spot welding if necessary, but such welding is small in amount, especially It does not require skill and is not so sensitive to the weather.

In addition, since each concrete reinforcing bar 19 for connecting the upper, lower, left and right units 1 to each other is bounded by the surface steel plate 3 and the partition walls 5 or the shear plates 13a and 13b, the strength of adhesion to the concrete is large. Therefore, it is possible to prevent the adhesion failure between the concrete and the joining rebar 19 to be broken, and thereby to sufficiently transmit the stress. Even if the joining rebars 19 of each unit 1 yield at the joining surface position, they are restrained and reinforced from the surroundings, so that they do not come out and the attachment length can be shortened as much as possible. .

The provision of the horizontal shear plate 13a may impede the fluidity of concrete to the left and right joints of each unit 1, but this is because the notch 14 is formed in each horizontal shear plate 13a. This can be solved by providing it or by using concrete having excellent fluidity, and the lateral shear plates 13a of the left and right units 1 may be arranged so as to be offset from each other.

Further, according to the above embodiment, the upper and lower connections of each unit 1 are made by inserting the joint reinforcing bar 19 into the through hole of the reinforcing bar receiving plate 17, but this reinforcing bar receiving plate 17 is provided especially. You don't have to. However, in this case, the left and right units 1 are joined to each other by joining the reinforcing bars 1 through the partition walls 5.
After joining at 9, the concrete is placed between both surface steel plates 3 up to the vicinity of the upper end portion thereof, and before the concrete is solidified, a reinforcing bar is constructed as a joining rebar vertically on the concrete placing surface.

[0025]

As described in detail in the above embodiments, according to the method for constructing a steel plate concrete wall according to the present invention,
Since the upper, lower, left, and right of each unit can be joined by the joining rebar, it is not necessary to perform the difficult welding work of welding the surface steel sheets of adjacent units along the contact line as in the past, and the skill of performing welding It is possible to construct a steel plate concrete wall with stable quality regardless of the workmanship and weather. Also, the unit construction work can be shortened regardless of the weather, and the construction period can be shortened.
The cost of steel plate concrete walls can be reduced.

Further, since the surrounding concrete is bound by the surface steel plate and the partition wall or shear plate, the bond strength between the joint reinforcing bars connecting the upper, lower, left and right units to each other becomes large, and the concrete and the connecting reinforcing bars are It is possible to prevent the adhesion failure in which the adherence of the material is destroyed, and thereby, the transmission of the stress can be made sufficient. Further, even if the joining rebars of the units are yielded at the joining surface position, they are restrained and reinforced from the surroundings, so that they do not come out, and the attachment length can be shortened as much as possible.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view (cross-sectional view taken along the line AA of FIG. 2) of a unit showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a cross-sectional view taken along the line BB in FIG.

FIG. 4 is a perspective view showing a state in which conventional units are joined.

FIG. 5 is a plan view of a conventional unit.

[Explanation of symbols]

 1 Unit 3 Surface Steel Plate 5 Partition 13a Horizontal Shear Plate 13b Vertical Shear Plate 14 Notch 17 Reinforcing Bar Receiving Plate 19 Bonding Reinforcing Bar

Claims (3)

[Claims] 1. A single unit is formed by joining a pair of surface steel plates arranged in parallel with each other with at least a pair of partition walls provided along the vertical direction between them to form a single unit at the construction site of a wall body. In a method of constructing a steel plate concrete wall, in which a plurality of units are joined adjacent to each other and concrete is placed between the surface steel plates, the units are positioned outside the partition wall at the left and right ends between the surface steel plates. A plurality of lateral shear plates extending in the left-right direction are provided, and a plurality of vertical shear plates extending vertically in parallel with the partition walls are provided at both upper and lower end portions between the surface steel plates, and through holes are formed in the partition walls. After inserting the joining rebar into the through hole of each unit adjacent to each other and joining the left and right units to each other by the joining rebar, after placing concrete between both surface steel plates, the upper and lower parts of the placing surface are Unit Method for constructing a steel plate concrete wall, characterized in disposing the insert muscle as a bonding reinforcing bars for joining to each other. 2. A single unit is formed by joining a pair of surface steel sheets arranged in parallel with each other by at least a pair of partition walls provided along the vertical direction between them to form a single unit at the construction site of the wall body. In a method for constructing a steel plate concrete wall in which a plurality of units are joined adjacent to each other and concrete is cast between the surface steel plates, the units are positioned outside the partition wall at the left and right ends between the surface steel plates. A plurality of lateral shear plates extending in the left-right direction are provided, and a plurality of vertical shear plates extending vertically in parallel with the partition walls are provided at both upper and lower end portions between the surface steel plates, and between the partition walls and the vertical shear plate. A strip-shaped reinforcing bar receiving plate extending in the left-right direction is provided, a through hole is formed in the reinforcing bar receiving plate and the partition wall, and the joining reinforcing bar is inserted into the through hole formed in the partition wall of each unit adjacent to the left and right. The left and right units are joined to each other by the joining rebars, and the joining rebars are inserted into the through holes formed in the reinforcing bar receiving plates of the vertically adjacent units to join the upper and lower units to each other by the joining rebars. A method for constructing a steel plate concrete wall, which comprises placing concrete between surface steel plates. 3. The steel plate concrete wall construction according to claim 1, wherein the lateral shear plate is formed with a notch for smoothly pouring during concrete pouring. Method.