JP3230305B2 - Construction method of steel plate concrete wall - 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 wall suitable for use in large structures such as nuclear facilities.

[0002]

2. Description of the Related Art Conventionally, in a large-scale structure having a concrete wall thickness of 1 m or more, such as a nuclear facility, a single unit in which a pair of surface steel plates is welded and joined with a partition wall is previously prepared in a factory or the like. After making this unit, multiple units are adjacently joined at the construction site of the wall body and joined continuously,
Construction is being carried out by casting concrete between both surface steel plates.

FIGS. 4 and 5 show a unit 1 in the above-mentioned conventional steel plate concrete wall. As shown in the drawing, the unit 1 has a pair of surface steel plates 3 arranged in parallel with each other, and a parallel state between them. And a pair of partition walls 5 extending along the up-down direction while welding are welded. In addition to the bulkheads 5, a shear bar 7 for withstanding the lateral pressure at the time of concrete casting is welded between the both surface steel plates 3, and the back side of each surface steel plate 3 is integrated with concrete. The stud bolt 9 for maintaining the pressure is welded.

[0004]

By the way, after the above-mentioned unit 1 is manufactured in a factory, it is transported to a construction site and assembled vertically and horizontally, and the surface steel plates 3 of each unit 1 are welded and joined to each other at the site. However, this welding 11 must be performed along a 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. In addition, whether or not welding can be performed depends not only on the weather, but also on the quality of the welded parts, which fluctuates depending on the weather. There was also a risk of missing.

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

[0006]

Means for Solving the Problems In order to achieve the above object, a first invention according to claim 1 is provided with a pair of surface steel plates arranged in parallel along a vertical direction between them. Steel plate concrete constructed by joining at least one pair of partition walls to form a single unit, joining a plurality of such units adjacent to each other at a wall construction site, and casting concrete between the both surface steel plates In the method of building a wall, while providing a plurality of lateral shear plates extending to the left and right located outside the partition wall at both left and right ends between the surface steel plates,
A plurality of longitudinal shear plates extending vertically up and down in parallel with the partition are provided at both upper and lower end portions between the surface steel plates, a through hole is formed in the partition, and a reinforcing bar is connected to the through hole of each unit adjacent to the left and right. After the left and right units are joined to each other by the joint reinforcing bar, concrete is cast between the steel plates on both surfaces, and then a reinforcing bar as a joint reinforcing bar for joining the upper and lower units to each other above the casting surface. Is provided.

In order to attain the above object, a second invention according to claim 2 is to provide at least a pair of at least one pair of surface steel plates arranged in parallel along the vertical direction between them. A method of constructing a steel plate concrete wall in which a single unit is formed by joining with a partition wall, a plurality of such units are joined and joined at a construction site of a wall body, and concrete is cast between the both surface steel plates and constructed. In the above, while providing a plurality of lateral shear plates located to the outside of the partition at the left and right ends between the surface steel plates and extending left and right, and extending vertically up and down at both upper and lower ends between the surface steel plates in parallel with the partition A plurality of longitudinal shear plates are provided, and a band-shaped reinforcing bar receiving plate extending in the left-right direction is provided between the partition and the vertical shear plate. A through-hole is formed between the reinforcing bar receiving plate and the partition, A joining reinforcing bar is inserted into a through hole formed in a partition wall of each adjacent unit to join the left and right units to each other by the joining reinforcing bar, and a reinforcing bar is joined to a through hole formed in a reinforcing bar receiving plate of each vertically adjacent unit. And the upper and lower units are joined to each other by the joining rebar, and then concrete is poured between both surface steel plates.

It is preferable that a notch is formed in the lateral shear plate so that concrete can be poured smoothly.

[0009]

According to the first aspect of the present invention, the right and left adjacent units are joined to each other by passing a reinforcing bar through a through hole formed in each partition. Even if these joining rebars are welded, it is no longer necessary to perform difficult welding along the line where the surface steel plates are in contact as in the related art. In addition, the vertically adjacent units are joined to each other by placing a reinforcing bar as a joint reinforcing bar on the casting surface after casting the concrete. And, with the reinforcing bar connecting the left and right units and the reinforcing bar connecting the upper and lower units, the surrounding concrete is restrained by the surface steel plate and the partition wall or the shear plate, so the adhesion strength with the concrete increases, Even if yielding occurs at the joint reinforcing bar at the joint surface position of each unit, since it is reinforced and restrained from the periphery, it does not come off, and the adhesion length can be shortened as much as possible.

In the second invention, the right and left adjacent units are joined to each other by passing the joint reinforcing bar through the through holes formed in the respective partition walls, and the vertically adjacent units are joined to the respective reinforcing plate receiving plates. This is done by passing a reinforcing bar through the through-hole formed in the hole. Even in this case, as in the first invention, even if these joining rebars are welded, it becomes unnecessary to perform difficult welding along the line where the surface steel plate contacts as in the related art. And, since the surrounding concrete is constrained by the surface steel plate and the partition wall or the shear plate, the bonding strength between the upper and lower units and the right and left units increases, and if they are joined at the joint surface position of each unit Even if the rebar yields, it does not come off because it is restrained and reinforced from the surroundings, and the adhesion length can be made as short as possible.

In both the first invention and the second invention, the notch is formed in the lateral shear plate, so that the concrete can be smoothly poured into the unit joint portion at the time of placing the concrete.

[0012]

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

FIG. 1 shows an example of a unit 1 previously manufactured in a factory for constructing a steel plate concrete wall of a nuclear facility.

A pair of surface steel plates 3 constituting both surfaces of the steel plate concrete wall are arranged in parallel with each other, and a partition wall 5 serving as a connecting material thereof is welded between the both surface steel plates 3. Two (see FIG.) Or three or more partitions 5 are provided, are arranged along the vertical direction, and are welded at right angles to both surface steel plates 3 to connect the respective surface steel plates 3 to each other.

A plurality of lateral shear plates 13a are welded between the both surface steel plates 3 at both left and right end portions thereof. This lateral shear plate 13a is
And is provided to extend right and left at right angles to the partition wall 5, and a plurality of them are arranged vertically at appropriate intervals. In each of the lateral shear plates 13a, a notch 14 is formed for smoothing the flow during concrete casting. In this embodiment, the notch 14 is formed in an elliptical shape.

Further, a plurality of longitudinal shear plates 13b are welded between both surface steel plates 3 at upper and lower ends thereof. This vertical shear plate 13b is
And a plurality of them are provided in parallel in the vertical direction, and are provided side by side at appropriate intervals on the left and right.

Further, a plurality of stud bolts 9 are provided on the back side of the peripheral portions of the both surface steel plates 3 to maintain the integrity with concrete. However, this stud bolt 9
May be eliminated if it is not particularly necessary from the viewpoint of strength.

A strip-shaped reinforcing bar receiving plate 17 extending left and right is welded between the partition wall 5 and the longitudinal shear plate 13b. This reinforcing bar receiving plate 17
Although it does not have great strength, a through hole for passing the reinforcing bar 19 is formed. And such a through hole is also formed in the partition wall 5.

In joining the unit 1 of the present embodiment,
After arranging the units 1 vertically and horizontally adjacent to each other, the joining reinforcing bar 19 is vertically passed through the through hole of the reinforcing bar receiving plate 17 between the units 1. In addition, the joint reinforcing bar 19 is passed through the through hole formed in the partition wall 5 of each unit 1 in the left-right direction. After the joint reinforcing bars 19 are passed through the through holes, they can be welded as necessary.

After the units 1 are joined in this manner, concrete is poured between the pair of surface steel plates 3 to construct a steel plate concrete wall.

As described above, according to the steel plate concrete wall construction method of the present embodiment, the joining of the units 1
Since the joining reinforcing bar 19 is passed through the through-hole of the partition wall 5 in the left-right direction and the through-hole of the reinforcing bar receiving plate 17 in the up-down direction, it is difficult to perform the joining along the line where the surface steel plate 3 contacts as in the related art. No welding 11 (FIG. 4) is required. For this reason, joining can be performed without relying on the skill of the skilled technician performing welding. Further, it is not necessary to perform a complicated welding along a long line where the surface steel plate 3 contacts, and therefore, the joining operation can be performed without being affected by 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,
The reinforcing bars passed through the through holes may be welded as necessary, or the surface steel sheet may be temporarily fixed by spot welding as necessary, but such welding is small, especially It doesn't require any skills and is not very weather sensitive.

Further, since the surrounding concrete is constrained by the surface steel plate 3 and the partition walls 5 or the shear plates 13a and 13b, the bonding reinforcements 19 connecting the upper, lower, left and right units 1 to each other have a large adhesive strength with the concrete. Therefore, it is possible to prevent the adhesion failure in which the adhesion between the concrete and the joint reinforcing bar 19 is broken, and thereby it is possible to sufficiently transmit the stress. Even if the joint reinforcing bars 19 yield at the joint surface position of each unit 1, they do not come off because they are reinforced and restrained from the surroundings, and the length of their attachment can be shortened as much as possible. .

There is a concern that the provision of the lateral shear plate 13a may impair the fluidity of the concrete to the left and right joints of each unit 1. This is because the notch 14 is formed in each lateral shear plate 13a. This can be solved by using a concrete having excellent fluidity, or the lateral shear plates 13a of the left and right units 1 may be arranged so as to be different from each other.

Further, according to the above embodiment, the upper and lower connections of each unit 1 are performed by inserting the joint reinforcing bar 19 into the through hole of the reinforcing bar receiving plate 17, but the reinforcing bar receiving plate 17 is particularly provided. You don't have to. However, in this case, the right and left units 1 are connected to
After joining at step 9, concrete is cast between both surface steel plates 3 to the vicinity of the upper end thereof, and before the concrete is solidified, a reinforcing bar is constructed as a joining reinforcing bar in the longitudinal direction on the concrete casting 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 joining rebar, there is no need 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 A stable quality steel plate concrete wall can be constructed without being affected by the workmanship and weather. In addition, we can perform unit joining work without being affected by the weather and can shorten construction period,
The cost of the steel plate concrete wall can be reduced.

Furthermore, since the surrounding concrete is bound by the surface steel plate and the partition wall or the shear plate, the bonding strength between the concrete and the joint reinforcement is increased. It is possible to prevent adhesion destruction in which the adhesion is broken, thereby making it possible to sufficiently transmit the stress. Even if yielding occurs at the joint rebar at the joint surface position of each unit, since the reinforcement is reinforced and restrained from the surroundings, no slip-out occurs and the length of the bond can be shortened as much as possible.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view (schematic AA section in FIG. 2) of a unit showing one embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view taken along a line BB in FIG. 1;

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit 3 Surface steel plate 5 Partition wall 13a Horizontal shear plate 13b Vertical shear plate 14 Notch 17 Reinforcement receiving plate 19 Joined reinforcing bar

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-43440 (JP, A) JP-A-2-61238 (JP, A) JP-A-2-61239 (JP, A) Jpn. 131508 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 2/86

Claims (3)

(57) [Claims] 1. A unit is formed by joining a pair of surface steel plates arranged in parallel with at least a pair of partition walls provided vertically between them to form a single unit. A method for constructing a steel concrete wall, comprising joining a plurality of units adjacent to each other and placing concrete between the both surface steel plates, and constructing the concrete wall. A plurality of lateral shear plates extending left and right are provided, and a plurality of vertical shear plates extending vertically up and down in parallel with the partition are provided at both upper and lower end portions between the surface steel plates. The right and left units are joined to each other by the joint reinforcing bars through the through holes of the units adjacent to each other, and then concrete is cast between both surface steel plates. Unity 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 plates arranged in parallel with at least a pair of partition walls provided vertically between them to form a single unit. A method for constructing a steel concrete wall, comprising joining a plurality of units adjacent to each other and placing concrete between the both surface steel plates, and constructing the concrete wall. Along with providing a plurality of horizontal shear plates extending left and right, a plurality of vertical shear plates extending vertically in parallel with the partition walls at both upper and lower ends between the surface steel plates, and between the partition walls and the vertical shear plate. A bar-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 a reinforcing bar is inserted into a through hole formed in a partition wall of each unit adjacent to the left and right. The left and right units are joined to each other by the joint reinforcement, and the joint reinforcement is inserted into the through holes formed in the reinforcement receiving plates of the vertically adjacent units, and the upper and lower units are joined to each other by the joint reinforcement. A method for constructing a steel plate concrete wall, comprising placing concrete between surface steel plates. 3. The steel plate concrete wall construction according to claim 1, wherein a cutout is formed in the lateral shear plate so as to smoothly pour the concrete during casting. Method.