JP2805154B2 - Construction method of concrete panel and cloth foundation used for it - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a construction method of a concrete panel, particularly an ALC panel, and a structure of a cloth foundation used for the method.

(Prior Art) Conventionally, when building an outer wall of an ALC on a cloth foundation, first, a steel column is erected on each of a plurality of concrete foundations into which reinforcing bars are inserted, and an underground beam and a cloth are interposed between the foundations. Placing the foundation. The fabric base is then fully cured before the top of the fabric base is leveled. Then, the outer wall is built on the cloth foundation.

Japanese Patent Application Laid-Open No. Sho 52-123504 discloses a method in which ends of a base body manufactured in advance in a factory are fitted into a gap formed by a steel plate erected on a joint base body, and connected with bolts penetrating therethrough.
Is known.

Further, Japanese Utility Model Application Laid-Open No. 53-59503 discloses a foundation structure in which bolts are used to connect a connecting portion of a steel plate protruded to both ends of a base body previously produced in a factory and a steel plate erected on a joint base body. Is described.

(Problems to be Solved by the Invention) However, in the above technique, after the cloth foundation is sufficiently hardened, not only the work of leveling the top end is required, but also a predetermined number of days is required until the top end portion is hardened. There is a problem that. This is not preferable from the viewpoint of shortening the number of construction days.

In addition, a method of connecting bolts to steel erected on the joint base body by penetrating holes of the base body produced in the factory in advance,
It is difficult to accurately embed the steel plate in the joint base so that the holes in the steel plate facing each other exactly match, or to preform the through-holes in the base so that they completely match the bolt holes on the steel plate. Was. Also, it is more difficult to make a hole in the molded base body because it is hard concrete.
For this reason, the method of fixing the base body by penetrating the bolt has not been easy.

Furthermore, the structure that connects the steel plate protruding at both ends of the base body manufactured in advance at the factory and the steel plate erected on the joint base body with bolts is exposed so that rainwater does not enter after fixing the base body. It is necessary to create a foundation that covers the existing joint with concrete. For this reason, a predetermined number of days was required for the concrete portion to harden.

An object of the present invention is to reduce the number of construction days and to easily fix a precast fabric foundation to a concrete foundation.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method of erection of steel columns 9 on a plurality of concrete foundations 6 into which reinforcing bars are inserted, and an anchor on one surface of the plate-shaped main body 2. The cloth foundation mounting hardware 4 to which the part 3 is attached is mounted on the concrete foundation 8 by embedding the anchor part 3 so that the plate-shaped main body 2 is exposed on the inner surface of the cloth foundation 1. Fixing the cloth foundation 1 to the steel column 9 by welding to the surface of the plate-shaped main body 2 of the cloth foundation mounting metal 4 or to the steel column 9 via the base metal 15; A concrete panel construction method is adopted in which the outer wall of the concrete panel 11 is built on top.
(The Invention of Claim 1) In the above method, the cloth foundation 1 is for welding and fixing the cloth foundation 1 to the steel column 9, and comprises the plate-shaped main body 2 and the anchor portion 3 attached to one surface thereof. A cloth foundation used for a method of building a precast concrete panel, in which the mounting hardware 4 is embedded and fixed so that the surface of the plate-shaped main body 2 is exposed on the inner side surface of the cloth foundation 1. Is adopted. (Invention of Claim 2) (Operation) In the invention of Claim 1, since the fabric foundation is formed in another separate process different from the construction site, it is only necessary to transport the fabric foundation to the construction site and perform the construction. In addition, not only the construction work can be performed immediately, but also the top end hardening and the hardening of the top end become unnecessary, and the construction period can be shortened.

Further, the cloth foundation can be fixed by welding the steel column to the surface of the plate-shaped main body exposed on the inner side surface of the cloth foundation or through a base metal.

According to the second aspect of the present invention, the reinforced pillar can be fixed to the surface of the plate-shaped main body exposed on the inner surface of the cloth foundation or by welding to the surface of the plate-shaped main body via a base metal. Fixed to the foundation through. As a result, the fabric foundation can be stabilized on the foundation.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

[Manufacturing Process of Cloth Foundation] A fabric foundation 1 having the shape shown in Fig. 1 was manufactured from concrete containing lightweight aggregate using a known mold. This fabric base 1 was manufactured as follows. That is, as shown in FIG. 2, a metal base mounting hardware 4 in which two curved rod-shaped anchor portions 3 are mounted on one side of a plate-shaped main body 2, and one side of a plate-shaped main body 5 as shown in FIG. A metal joint 7 for fixing joints to which a plurality of octopus-shaped anchor portions 6 are attached is set so as to be in contact with the formwork surface, and as shown in FIG. The two types of main bodies 4, 4 and 7 were respectively exposed on the fore-edge surface. Then, the concrete was poured into the formwork.

[Construction process of cloth foundation] As shown in Fig. 4, independent foundations 8a into which reinforcing bars have been inserted by a conventionally known method are cast at a plurality of places on a site where an ALC-use building is to be built. Independent foundation
An underground beam 8b was stretched between 8a to form a concrete foundation 8 of this embodiment.

A steel column 9 as shown in FIG. 5 is erected on the independent foundation 8a, and a self-weight receiving metal fitting 10 having a vertical T-shaped vertical cross section at the base of the steel column 9 is shown in FIG. Fixed by welding.

Next, the cloth base 1 obtained in the above-mentioned manufacturing process was set on the base 6 with small ends, and both ends of the cloth base 1 were positioned substantially at the center of the steel column 9.

Next, the cloth foundation mounting metal 4 is welded and fixed to the steel column 9 via an L-shaped base metal 15 (see FIG. 5).
Place one ALC panel 11 on the cloth base 1 (No. 6
Further, a joint reinforcing bar 13 was inserted into joints 12 on both sides of the joint, and the lower end thereof was fixed to the joint reinforcing metal 7 by welding. Similarly, another ALC panel (not shown) was built adjacent to the ALC panel 11.

In the same manner, the ALC panels were built in the same manner, and the joints between the ALC panels were filled with mortar to form the outer walls of the building.

Finally, an encapsulant such as a sealing material made of silicone resin is filled between the adjacent fabric foundations 1 or the underground beams 8b and the fabric foundation 1 to seal the space therebetween.

For comparison, when the cloth foundation was cast on site as in the past, after finishing the top of the cloth foundation, the ALC
It took about one week to start building the panels.

As described above, according to the present invention, not only the construction period can be shortened, but also the positioning of the cloth foundation 1 can be accurately performed only by placing the cloth foundation 1 on the deadweight receiving hardware 10 and welding the cloth foundation mounting hardware 4 to the steel column 9. Can be

The present invention is not limited to the above-described embodiment, and can be implemented in various modes as long as the basic technical idea is followed. For example, ALC as lightweight concrete
Others can be used.

The shape of the cloth foundation 1 may be an L-shaped longitudinal section as shown in FIGS. 7 and 8, or a shape provided with a rib 14 on a side surface, depending on the application.

In the cloth foundation 1 shown in FIGS. 7 and 8, the cloth foundation mounting hardware 4 according to the present invention is installed so that the surface of the plate-shaped main body 2 is exposed to the other side (the invisible surface side) in the figure. I have.

In addition, the present invention does not need to be applied to the entire foundation of the building.For example, for the area around the entrance of the entrance, a conventionally known method may be used in combination, or a method other than the above may be used as a method of fixing the cloth foundation. May be adopted.

(Effects of the Invention) As described in detail above, the present invention exerts an excellent effect that the construction period for building an outer wall for a concrete building can be significantly reduced. In addition, since the fabric foundation is manufactured in a separate process different from the construction site, the fabric can be manufactured with excellent precision so that the top end is not required and the side is not ironed.

Further, according to the present invention, after the cloth foundation is installed, it is not necessary to form the foundation with concrete.

Furthermore, since the steel column can be fixed to the surface of the plate-shaped main body exposed on the inner surface of the cloth foundation or by being welded to the surface of the main body through the base metal, there is some dimensional error in the cloth foundation or the steel column. Even if there is, there is no problem in mounting, and the fixing operation can be easily performed.

[Brief description of the drawings]

1 is a perspective view of a cloth foundation, FIG. 2 is a perspective view of a cloth foundation metal, FIG. 3 is a perspective view of a joint reinforcing metal fixing metal, FIG. 4 is a plan view of the foundation, and FIG. 6 is a similar perspective view, FIG. 7 is a perspective view showing another embodiment of the cloth foundation, and FIG. 8 is a perspective view showing still another embodiment. 1: cloth foundation, 4: cloth foundation mounting hardware, 8: concrete foundation, 7:
Joint reinforcing steel fixing hardware, 11: concrete panel.

Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E02D 27/00-27/01

Claims (2)

(57) [Claims] An iron column (9) is erected on a plurality of concrete foundations (6) into which reinforcing bars are inserted, and a cloth foundation having an anchor (3) attached to one surface of a plate-like body (2). The mounting hardware (4) is made of a plate-like body (2) and a cloth base (1).
Mounting the precast fabric base (1) with the anchor portion (3) embedded therein so as to be exposed on the inner surface of the concrete base (8); Fixing the fabric base (1) to the steel column (9) by welding to the surface of the body (2) or to the surface of the body (2) via a base metal (15); A concrete panel construction method consisting of building on the outer wall of the panel (11). 2. A cloth foundation for welding and fixing a cloth foundation (1) to a steel column (9) and comprising a plate-shaped main body (2) and an anchor portion (3) attached to one surface thereof. A mounting metal part (4) of a precast concrete panel in which the anchor part (3) is embedded and fixed so that the surface of the plate-like body (2) is exposed on the inner surface of the cloth foundation (1). Cloth foundation used for erection method.