JPS6329062B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ribbed thin-walled medium-sized panel with improved earthquake resistance.

Today, ribbed thin-walled medium-sized panels are widely used as walls for prefabricated houses.

FIG. 1 shows an example of this type of medium-sized panel.

The medium-sized panel indicated by reference numeral 1 in this figure forms a frame body by combining a plurality of middle horizontal ribs 2, upper and lower horizontal ribs 2', and vertical ribs 3, and connects them with a shell part 4. The structure is said to be

If such a structure is adopted, when an external force such as an earthquake is applied to the medium-sized panel 1 in the horizontal direction, the shell portion 4 along the lower horizontal rib 2' may be damaged.
A phenomenon in which cracks appeared on the surface was observed.

The present invention has been made to improve the above-mentioned phenomenon.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

FIG. 2 and subsequent figures show one embodiment of the present invention. In this figure, parts that are the same as or correspond to those in FIG.

In this embodiment, bulges 2a are provided at both ends of the lower horizontal rib 2', the bulges 2a are made thicker, and the spiral strips 5 are embedded in the bulges 2a. , surrounding the outside of a vertically formed through hole 7 into which the anchor bolt 6 is fitted, and the anchor bolt 6 which is fitted into the through hole 7.
A structure is adopted in which the space between the anchor bolt 6 and the through hole 7 is filled with non-shrinkable high-strength mortar, and the anchor bolt 6 and the panel are integrated. The spiral reinforcement 5 is arranged as a reinforcing reinforcement, and a structure is adopted in which the anchor bolt 6 side and the main reinforcement 8 of the panel are integrated.

By adopting such a structure, the punching shear strength of the entire panel can be improved, the force transmission from the anchor reinforcement to the panel main reinforcement can be made clear, and while local rib failure can be prevented, the lower The occurrence of horizontal cracks in the shell portion 4 along the line of the horizontal ribs 2' can be reduced.

In addition, since a structure is adopted in which non-shrinkable high-strength mortar is filled between the anchor bolt 6 and the through hole 7, the adhesion force of the anchor bolt to the panel is increased, and the bearing capacity of the anchor bolt 6 itself is increased. It is possible to increase the fracture resistance up to.

In addition, the thickness of the horizontal ribs 2 is increased to cope with the increase in shear force that must be borne due to the increase in the proof strength of the entire panel, and to prevent tensile splitting failure of the vertical ribs 3 caused by bolts that connect adjacent panels. Can be done.

Therefore, as shown in FIG.
When an external force due to an earthquake or the like is applied in the horizontal direction, the bulging portion 2a of the lower horizontal rib 2' acts as a haunches, increasing the compressive and tensile strength,
It is possible to prevent tensile splitting failure caused by the anchor bolt 6, which was a conventional drawback.

In addition, the panel main reinforcement 8 and the anchor bolt 6 are integrated by the spiral reinforcement 5 and non-contractile high-strength mortar, and the external force is transferred from the panel main reinforcement 8 receiving the bending force to the anchor bolt 6. Furthermore, it becomes easier to transmit the vibration to the foundation part on the floor side, and the seismic performance of the entire panel is significantly improved.

As is clear from the above description, according to the present invention, spiral reinforcing bars 5 are embedded in the bulges 2a formed at both ends of the lower horizontal ribs 2', and the reinforcing bars 5 are inserted into the panel through the reinforcing bars 5. Main reinforcement 8 and anchor bolt 6
In addition, the anchor bolt 6 and the panel are integrated using non-shrinkable high-strength mortar, and the thickness of the horizontal rib 2 is increased. It is possible to prevent tension splitting failure that occurs in the ribs 2', and it is possible to prevent tension splitting failure that occurs in the vertical ribs 3 caused by the joining bolts connecting adjacent panels, and it is possible to significantly improve the seismic performance of the panel.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view showing the conventional structure, Figure 2
The figure is a partially cutaway front view showing one embodiment of the present invention, Figure 3 is a sectional view taken along line A-A in Figure 2, and Figure 4 is a front view showing a state in which the ribbed thin medium-sized panel of the present invention is attached. It is. 1 is the medium-sized panel, 2 is the middle horizontal rib, 2' is the top,
Lower horizontal ribs, 3 are vertical ribs, 4 are shell parts, 5 are spiral reinforcing bars, 6 are anchor bolts, 7 are through holes, and 8 are panel main bars.

Claims (1)

[Claims] 1. In a thin medium-sized panel with ribs for residential use, which is equipped with a pair of left and right vertical ribs, a plurality of horizontal middle horizontal ribs connecting these vertical ribs, and upper and lower horizontal ribs, the lowermost horizontal rib A bulge is provided on both sides of the panel, and a spiral reinforcing bar is provided in the bulge surrounding the hole through which the anchor bolt is passed.The end of this reinforcing bar is integrated with the main panel bar, and the horizontal A thin, medium-sized ribbed panel characterized by increased rib thickness.