JP2580967Y2 - Hardware for through holes in underground foundation beams - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material and a structure of a metal fitting for a through hole in an underground foundation beam.

[0002]

2. Description of the Related Art In a building with a basement floor, the bottom plate in contact with the ground is affected by groundwater, and groundwater that permeates from the basement and accumulates on the bottom plate is provided with a through hole in an underground foundation beam, collected at one place, and pumped. It is common to drain water. Usually, a plurality of the through holes are provided for one foundation beam, and as an installation method, a plastic pipe having a circular or semicircular cross section is buried in the foundation beam in the horizontal direction.

[0003]

In the conventional method of burying a plastic pipe in a horizontal direction in a foundation beam, since a large number of buried portions have a sectional defect, reinforcement is provided around the buried portions. For this reason, the labor of arranging the reinforcing bars is very difficult, and the reinforcing bars are often not sufficiently reinforced.

[0004]

DISCLOSURE OF THE INVENTION The present invention is a metal fitting for an underground foundation beam through-hole which does not require a separate reinforcing bar arrangement as in the conventional method. That is, the present invention provides a through-hole for an underground foundation beam in which a plurality of sets of three reinforcing bars are welded by projecting to both sides of the width in the width direction of each side of a triangular prism in which both flange ends of an angle iron are welded to an elongated steel plate. It depends on hardware.

In the metal fittings for through-holes of underground foundation beams according to the present invention, the reinforcing bars projecting from both sides in the width direction of each side surface of the triangular prism are welded to serve as a jig for mounting the metal fittings and as a reinforcing bar. In addition, the triangular prism composed of the angle iron and the steel plate also serves as a reinforcing material and a through hole.

Therefore, when the metal for the underground foundation beam penetration hole of the present invention is buried in the foundation beam in the horizontal direction, the beam concrete naturally has a cross-sectional defect. It is more than complemented by the reinforcing effect of steel, steel plates and rebar. As a result, the use of the metal fittings for through-holes of underground foundation beams of the present invention eliminates the necessity of any additional reinforcing bars even when the number of through-holes is large.

[0007] Since the hardware of the present invention can be installed in the formwork only by binding the welded rebar to the stirrup, the labor for installation is also reduced.

In the metal fittings for through-holes of underground foundation beams of the present invention, one set of three rebars welded to each side of the triangular prism is provided at both ends in the longitudinal direction of the triangular prism, and each pair of intermediate reinforcing bars is provided at an intermediate portion according to the width of the foundation beam. 0 to 3 sets, about 2 to 5 sets in total.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is an elevation view showing an example of a metal fitting for a through-hole for an underground foundation beam according to the present invention.

1 is a horizontal welded bar 4 on the horizontal side of a triangular prism formed by welding the ends of both flanges of an angle iron 2 and an elongated steel plate 3, and two on two oblique sides. Are welded in the width direction of each side face as a set of three oblique welding streaks 5, 5. Each of the welding bars protrudes from both sides.

The triangular opening of the triangular prism forms the through hole 6, and each welding bar serves as a reinforcing bar and a jig for mounting hardware.

In FIG. 1, an equilateral steel is used as the angle iron 2, but an unequal steel may be used.

FIG. 2 shows a metal fitting 1 for a through-hole of an underground foundation beam according to the present invention.
Shows the state installed in the beam formwork, (a) is a longitudinal sectional view,
(B) is a longitudinal sectional view orthogonal to (a).

As the metal fittings 1 for through-holes for underground foundation beams, a set of three reinforcing bars of predetermined length welded to both ends and a center at three sets is used. The ends of the three horizontal welded bars 4 are tied and fixed to the stirrups 8 of the existing bars, while being careful to keep the hardware 1 for the underground base beam through-hole in the longitudinal direction and the width direction. Next, the end of the oblique welding bar 5 is bound to the stirrup 8, and the underground foundation beam through-hole hardware 1 is fixed.

The length of the triangular prism of the metal fitting 1 for the underground foundation beam penetration hole becomes the width of the underground foundation beam, and the length to the welded portion and the end of the welding bar at both ends becomes the cover of the beam concrete. Care must be taken with regard to the length of the metal fitting 1 and the welding location.

[0017]

[Effects of the Invention] (1) By using the metal for the underground foundation beam through hole of the present invention, it is not necessary to reinforce the beam concrete in the underground foundation beam through hole.

(2) The use of welding bars reduces the labor for installing underground foundation beam through holes in the formwork.

[Brief description of the drawings]

FIG. 1 is an elevation view showing an example of a metal fitting for an underground foundation beam through hole of the present invention.

FIGS. 2A and 2B show a state in which the metal for the underground foundation beam through-hole of the present invention is installed in a formwork, wherein FIG. 2A is a longitudinal sectional view, and FIG.
FIG.

[Explanation of symbols]

1. Hardware for underground foundation beam through-holes, 2. Angle steel, 3.
Steel plate, 4 horizontal weld bars, 5 oblique weld bars, 6 through holes, 7 main beam bars, 8 stirrups, 9 bottom plate,
10. Upper plate part.

Claims (1)

(57) [Scope of request for utility model registration] 1. A through-hole for an underground foundation beam in which a plurality of sets of three rebars are welded by projecting on both sides in the width direction of each side face of a triangular prism having both ends of an angle steel welded to an elongated steel plate. hardware.