JPH08218522A - Construction method for concrete exterior wall - Google Patents

Abstract

PURPOSE: To comply with various requirements which may vary with construction sites variously and enhance the economical performance of a construction work of a concrete exterior wall and construction efficiency and well. CONSTITUTION: A plurality of reinforcing bars 14 are welded and fixed with the rear surface of a deck plate 11 across their uneven parts on a concrete-made exterior wall of a structure while a plurality of space holding members 12, which are being held with the reinforcing bars 14, are projectingly installed to the front surface of the deck plate 11. Then, a welded metal net 17 is fixed with the front surface of the deck plate 11 with the space holding members 12 and laid out where an exterior form 13 is installed with the space holding members 12, thereby forming a form unit 20. The deck plate 11 is fixed with the structure 1 at its outer peripheral position so that the form unit may be installed to a construction scheduled location of the concrete exterior wall. Concrete is placed inside the form unit 20. After the concrete is cured, the exterior form 13 is removed from the space holding members 12, thereby constituting the concrete exterior wall.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for constructing a concrete outer wall of a structure.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing a concrete outer wall of a structure, a precast concrete member has been built in a planned location of the outer wall. Such a precast concrete member is manufactured by driving concrete into a formwork in an existing factory or a temporary factory near the construction site according to a uniform standard, and then transported to the construction site.

[0003]

However, in the conventional method of constructing a precast concrete member, as described above, the precast concrete member is manufactured according to a uniform standard, so that there is a problem of poor versatility. there were. That is, in the construction method using such a precast concrete member, it is necessary to appropriately change the standard at the stage of factory production in order to adapt to various conditions that vary depending on the construction site. Therefore, it takes a certain period of time to change the standard, and the equipment cost associated therewith increases, which may reduce economic efficiency and construction efficiency.

Therefore, the present invention has been made to solve the above problems, and can be easily adapted to various conditions that vary depending on the construction site, which makes the construction work of the concrete outer wall economical and construction efficient. It is an object of the present invention to provide a method for constructing a concrete outer wall that can improve the property.

[0005]

The method for constructing a concrete outer wall of the present invention is made in order to achieve the above object, and is a method for constructing a concrete outer wall for a structure, wherein an uneven portion is formed in the longitudinal direction. A plurality of reinforcing bars are welded and fixed to the back surface of the deck plate having the concave and convex portions of the deck plate, and while being held by the reinforcing bars, a spacing member is passed through the deck plate and the front surface side of the deck plate. A plurality of projections are provided on the deck plate and fixed to the spacing member, a welding wire mesh is arranged along the front side of the deck plate along with the outer frame by the spacing member. Forming a formwork unit, fixing the deck plate to the outer peripheral position of the structure, and placing the formwork unit on the outer peripheral surface of the structure so that the outer formwork is located on the concrete outer wall. A step of installing a building planned portion, a step of pouring the concrete into the formwork in the unit, in which concrete and a step of removing the outer frame from the spacing member after curing.

Further, in the method of constructing a concrete outer wall, when the formwork unit is fixed to the outer peripheral position of the structure, a mounting member is attached to the steel frame beam arranged at the outer peripheral position of the structure, It is preferable that reinforcing iron plates are attached to both ends of the deck plate, and the reinforcing iron plates are fixed to the attachment member.

[0007]

According to the method of constructing a concrete outer wall of the present invention, a space holding member is fixedly mounted on the surface of the deck plate in advance, and the outer frame is arranged on the deck plate via the space holding member. In order to form the unit, by adjusting the dimensions of the deck plate and the length of the spacing member as appropriate, the vertical and horizontal dimensions of the outer wall to be constructed, the wall thickness, etc. can be changed, and various types that vary depending on the construction site. The conditions can be easily and quickly adapted.

Further, when the spacing holding member is fixedly mounted on the deck plate, the spacing holding member is fixedly mounted on the deck plate while being held by the reinforcing bar welded and fixed to the back surface of the deck plate. It can be easily and firmly fixed to the plate.

In addition, by placing concrete on the formwork unit, it is possible to easily construct an outer wall in which the deck plate and the concrete part are integrated, and when the mold is removed, the deck plate is left on the outer wall part. Therefore, after the concrete is hardened, it is sufficient to remove only the outer form from the spacing member, and the labor can be saved.

Further, when the formwork unit is fixed to the outer peripheral position of the structure, if the attaching member is attached to the steel beam and the reinforcing iron plate is fixedly attached to the attaching member, the formwork unit is easily attached to the structure. it can.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for constructing a concrete outer wall of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows a concrete outer wall 10 constructed as an outer wall of a structure 1 by the method for constructing a concrete outer wall according to this embodiment.

The structure 1 is made of, for example, a steel frame structure or a reinforced concrete structure.
3, a floor slab 4 is arranged on the steel beams 2 and 3. A concrete outer wall 10 is constructed on the outer peripheral surface of the structure 1.

The concrete outer wall 10 is fixed to the steel beams 2 and 3, and has a deck plate 11 in which a wavy uneven portion 11b is formed in the vertical direction (height direction in FIG. 1), and the deck plate 11 Is a composite wall which is arranged in the outer layer part and is constituted by the concrete part 21 having a wall thickness of about 120 mm to 170 mm. In the present embodiment, the interior material 6 is provided inside the concrete outer wall 10.
The heat insulating material 5 is arranged between the concrete outer wall 10 and the interior material 6.

The concrete outer wall 10 is constructed by the following work procedure. First, as shown in FIGS. 2 and 3, prior to the construction of the concrete outer wall 10, the formwork unit 20 is formed by so-called ground assembly at the construction site.

The formwork unit 20 has a plurality of separators 12 fixed to the surface of the deck plate 11 so as to project outward, and the separators 12 are used to wire mesh or the like on the surface of the deck plate 11. The welding wire net 17 (in this embodiment, a diameter of about 13 mm) is arranged, and the outer frame 13 is fixed by the separator 12 along the surface of the deck plate 11.

As shown in FIG. 2 (a), the deck plate 11 is made of iron and has a corrugated uneven portion 11b formed in the vertical direction in order to maintain strength, which is similar to that used for a normal floor slab. The required number of unit pieces having a predetermined width (about 600 mm in this embodiment) (for example, about 4 pieces).
Appropriately joined and set to a specified size (eg width 2400mm, height 3
It is a panel shape of about 000 mm). And
On the convex side of the uneven portion 11b of the deck plate 11,
Separator 1 vertically and horizontally across the entire surface of the deck plate 11.
A large number of mounting holes 11a for mounting 2 are formed penetrating the front and back.

Further, on the back surface of the deck plate 11, that is, on the side surface on the structure 1 side when the deck plate 11 is attached to the outer wall of the structure 1 where the outer wall is to be constructed, a reinforcing bar 14 (diameter 6 to 6 in this embodiment is used). About 9 mm) is joined by welding or the like. This reinforcing bar 14 crosses the concave side of the concave and convex portion 11b of the deck plate 11 and the deck plate 1
A plurality of them are joined in parallel to each other at a position corresponding to the mounting hole 11a formed in the hole 1. In addition, in this embodiment, reinforcing iron plates 16b constituting a fastener 16 described later are attached to both ends of the deck plate 11.

As shown in FIG. 3A, the separator 12 includes a deck plate 11 and an outer mold 13 so that a concrete placing space 15 is formed between the deck plate 11 and the outer mold 13. Is maintained so that the plurality of protrusions are provided on the surface of the deck plate 11 so as to project outwardly on the convex side of the concave and convex portion 11b. This separator 12
As shown in FIG. 3B in which only the separator 12 is enlarged, has a bent portion 12a bent into a substantially L shape at one end and a threaded portion to which the nut 12b is screwed at the other end. 12
It is a rod-shaped metal member in which c is engraved.

In order to fix the separator 12 to the deck plate 11, first, the screw part 12c at the end of the separator 12 is placed on the convex side of the mounting hole 11a of the deck plate 11, and from the back side of the deck plate 11. Insert it.
Next, the L-shaped bent portion 12a is attached to the deck plate 11
The reinforcing bars 14 joined to the back surface of the concave portion 11b across the concave portion of the concave portion 11b are hooked, and these are joined to each other by welding or the like. Further, after the fixing work of the separator 12 is completed, as shown in FIG.
A welding net 17 is arranged along the deck plate 11 by welding or the like, and at both ends of the deck plate 11, a reinforcing member 16 constituting a fastener 16 described later is formed.
It is bonded to d and held.

On the other hand, as shown in FIG. 3 (a), the outer form 13 can be made of iron or wood which is usually used for placing concrete. In this embodiment, it is made of veneer. Use one. The outer mold frame 13 has a mounting hole 13a through which the separator 12 is inserted.
The holes are provided at positions corresponding to the two positions.

Then, in order to mount the outer mold 13 on the surface of the deck plate 11, as shown in FIG.
Separator 12 protruding from the surface of the deck plate 11
The screw portion 12c of the outer mold 13 is inserted into the mounting hole 13a of the outer mold 13, and the nut 12b is screwed while the support member 18 such as a steel edge is attached to the screw portion 12c which is inserted and protrudes from the surface of the outer mold 13. Combine and fix.

When the work of forming the formwork unit 20 is completed in this way, then the formwork unit 20 is installed at the planned construction site of the concrete outer wall 10. In this installation, the mold unit 20 is installed via the fastener 16 so that the outer mold 13 is located on the outer peripheral surface of the structure 1.

As shown in the enlarged view of FIG. 4, this fastener 16 is attached to both ends of the deck plate 11 and an attaching member 16a having a T-shaped cross section which is attached to the flanges of the steel beams 2 and 3, and is attached to the attaching member. A reinforcing iron plate 16b fixed to 16a by fixing means 16c such as bolts and nuts;
The reinforcing member 16d is attached to the reinforcing iron plate 16b to fix the welding wire net 17.

To install the form unit 20 using the fastener 16, the web portion of the mounting member 16a is fixed to the flange portions of the steel beams 2 and 3 by welding or the like, and at the same time, the mounting member 16a is mounted. Deck plate 11
Reinforcing iron plates 16b attached to both ends of are attached by fixing means 16c such as bolts and nuts.

Incidentally, the reinforcing iron plate 1 of the mold unit 20.
It is preferable that the attachment position of 6b is a position where the joint portion 19 is formed between it and a form unit (illustrated by an imaginary line in FIG. 4) further arranged above the form unit 20 later. .

When the installation work of the formwork unit 20 is completed, concrete is then placed in the concrete placement space 15 in the formwork unit 20. After that, when the concrete is hardened, the outer formwork 13 is removed from the separator 12 while leaving the deck plate 11 and the construction work of the concrete outer wall 10 is completed.

According to the method of constructing the concrete outer wall 10 having such a procedure, since the outer formwork 13 is previously arranged on the surface of the deck plate 11 via the separator 12 to form the formwork unit 20, the deck is formed. Dimensions of plate 11,
By appropriately adjusting the length of the separator 12, it is possible to easily adapt to various conditions at the construction site.

Further, the separator 1 is attached to the deck plate 11.
When the 2 is fixed, the rebar 14 is attached to the back surface of the deck plate 11.
Since a plurality of welded parts are fixed together and the separator 12 is held and fixed thereby, the separator 12 is fixed to the deck plate 1
1 can be easily and firmly fixed.

On the other hand, since the concrete is placed in the form unit 20 installed at the location where the concrete outer wall 10 is to be constructed, the outer wall in which the deck plate 11 and the concrete portion 21 are integrated can be constructed. Furthermore,
Since the deck plate 11 is left on the outer wall portion, it is sufficient to remove only the outer formwork 13 from the separator 12 after the concrete is hardened, and labor can be saved.

Further, in this embodiment, the deck plate 1
When fixing 1 to the outer peripheral position of the structure 1, steel beams 2, 3
Since the mounting member 16a is attached to and the reinforcing iron plate 16b is fixedly mounted thereto, the deck plate 11 can be easily fixed to the structure 1.

[0031]

As described in detail above, according to the method of constructing a concrete outer wall of the present invention, the outer formwork is previously arranged on the deck plate by the spacing member to form the formwork unit. By appropriately adjusting the size of the plate and the length of the spacing member, it is possible to change the vertical and horizontal dimensions of the outer wall to be constructed, the wall thickness, etc., and to easily and quickly meet various conditions that change depending on the construction site. Can be adapted to.

Further, when the spacing holding member is fixedly mounted on the deck plate, since the spacing holding member is fixedly mounted on the deck plate while being held by the reinforcing bar, the spacing holding member can be easily and firmly fixed to the deck plate. it can.

In addition, by placing concrete on the formwork unit, an outer wall in which the deck plate and the concrete part are integrated can be easily constructed, and the deck plate is left on the outer wall part at the time of demolding. Therefore, after the concrete is hardened, it is sufficient to remove only the outer form from the spacing member, and the labor can be saved.

Further, when the formwork unit is fixed to the outer peripheral position of the structure, if the attaching member is attached to the steel beam and the reinforcing iron plate is fixed to the attaching member, the formwork unit can be easily attached to the structure. it can.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a concrete outer wall according to an embodiment of the present invention.

2 (a) to 2 (c) are explanatory views showing a procedure for constructing a mold unit according to an embodiment of the present invention.

3A and 3B show a form unit used in the method for constructing a concrete outer wall of the present invention, wherein FIG. 3A is a sectional view thereof, and FIG. 3B is a side view showing a spacing member.

FIG. 4 is an enlarged sectional view showing a fastener for fixing the form unit according to this embodiment.

[Explanation of symbols]

 10 Concrete outer wall 11 Deck plate 12 Separator (spacing member) 13 Outer formwork 14 Reinforcing bar 16 Fastener 16a Mounting member 16b Reinforcing iron plate 16c Reinforcing member 17 Welding wire mesh 20 Formwork unit

Claims (2)

[Claims] 1. A method for constructing a concrete outer wall of a structure, wherein a plurality of reinforcing bars are welded and fixed to a back surface of a deck plate having an uneven portion in a longitudinal direction across the uneven portion of the deck plate, A step of penetrating the deck plate through the deck plate while being held by the reinforcing bars, and projecting a plurality of the space holding members on the front surface side of the deck plate; Along with the welding wire mesh and the step of forming the outer frame by the space holding member to form a frame unit, and fixing the deck plate to the outer peripheral position of the structure, A step of installing the formwork unit at a planned construction site of the concrete outer wall so that the frame is located on the outer peripheral surface of the structure;
A step of placing concrete in the formwork unit,
A method of constructing a concrete outer wall, comprising the step of removing the outer formwork from the spacing member after the concrete has hardened. 2. When fixing the formwork unit to an outer peripheral position of the structure, a mounting member is attached to a steel frame beam arranged at the outer peripheral position of the structure, and both end portions of the deck plate are reinforced. The method for constructing a concrete outer wall according to claim 1, wherein an iron plate is attached and the reinforcing iron plate is fixedly attached to the attachment member.