JPS61286437A - Steel plate/concrete wall structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a steel plate concrete wall structure that constitutes the walls of large-scale buildings such as silos.

(Problem to be solved by the invention) Since the wall surface of a steel plate concrete wall is usually formed of a thin steel plate, in order to resist in-plane force, it is necessary to connect studs perpendicular to the steel plate as shown in Figure 1. This needs to be reinforced. However, reinforcing the steel plate by simply joining studs to the steel plate does not restrain the steel plate effectively, and it is difficult to effectively prevent the steel plate from buckling when subjected to in-plane shearing and compression.

This invention was made primarily for the purpose of preventing buckling of steel plates, and attempts to achieve this by increasing the degree of restraint of the steel plates.Furthermore, by integrating the steel plates and concrete, axial force is reduced. The aim is to form a composite structure that is effective for out-of-plane bending.

(Means for Solving the Problems) In the present invention, the steel plate and wall reinforcing bars are connected with bent reinforcing bars as shear connectors to strengthen the restraint of the steel plate, and the steel plate is reinforced by vertically joining steel members to the steel plate. .

The bent reinforcing bars are horizontally joined to the steel plate, and their tips are engaged with the wall reinforcing bars to connect the steel plate and the wall reinforcing bars and function as a shear connector.

The steel material is vertically joined to the steel plate to increase the second moment of area of the steel plate and prevent buckling.

(Example) The present invention will be described below with reference to drawings showing one embodiment.

This invention horizontally joins a bent reinforcing bar 3 whose tip is bent to a steel material 2 that is joined to a steel plate 1 forming the inner surface of the wall, and engages the tip 3a of the bent reinforcing bar 3 with the wall reinforcing bar 4 to make concrete. 5, and steel plate concrete wall A (
This constitutes the SC wall A) below.

The steel material 2 is vertically joined to the steel plate 1 to reinforce the steel plate 1, and the bent reinforcing bars 3 connect the steel material 2 with the vertical reinforcements 4a or horizontal reinforcements 4b of the wall reinforcing bars 4 to restrain the steel plate 1. strengthen. FIG. 2 shows the case where the bent reinforcing bar 3 is engaged with the vertical bar 4a, and FIG. 3 shows the case where the bent reinforcing bar 3 is engaged with the horizontal bar 4b.

For the steel material 2, it is appropriate to use a flat par 2a or an angle 2b that easily forms a surface perpendicular to the steel plate 1.
Further, in order to enhance the restraining effect of the steel plate 1, the bent reinforcing bars 3 are engaged with the wall reinforcing bars 4 on the outside of the wall body.

Next, an example of the construction procedure will be explained based on FIG. 4 showing an embodiment of the present invention in a silo.

First, the mutual ends of the steel plates 1 are welded to form a ring steel plate 6 (CI). Next, the angle 2b as the steel material 2 is intermittently welded to the outer periphery of the steel plate 1. At the same time, the vertical reinforcement 4a is assembled, and the bent reinforcing bar 3 is engaged with the vertical reinforcement 4a to form the angle 2.
Weld to b (III). Next, assemble the transverse reinforcement 4b (I
V) constitutes a reinforcing bar basket 7 integrated with the IJ steel plate 6. The ring steel plate 6 and reinforcing bar cage 7 are suspended and installed at a predetermined position (■), a formwork 8 is constructed around the outer periphery, and concrete 5 is poured (W). Here, the ring steel plate 6 and the reinforcing bar basket 7 constructed at V are further suspended and placed on the ring steel plate 6 and the reinforcing bar cage 7 on which the concrete 5 has been cast, and the upper and lower ends of the steel plates 1 are welded to each other. Next, external suspended scaffolding 9. Raise the formwork 8 and finish the surface of the lower concrete surface as necessary (■), and move the inner stage 10°, external suspension scaffolding 9 and formwork 8 to the upper ring steel plate 6.
Raise it to rebar cage 7 (■, IX). Next, concrete 5 is poured, and X) 2 work is completed.

(Effects of the Invention) Since the present invention has a structure in which the steel plate is restrained by the shear connector and reinforced with steel material, it is possible to prevent the occurrence of buckling and at the same time improve the proof strength.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing a conventional embodiment, Figures 2 and 3 are
The figure is a sectional view showing an embodiment of the present invention. Figure 4 shows the construction procedure, with I and V showing the overall outline, and the others showing partial cross-sectional views. FIG. 5 is a perspective view thereof. A = steel plate concrete wall, 1: steel plate, 2: steel material 2a: flat bar, 2b: angle 3: bent reinforcing bar, 3a: bent reinforcing bar tip 4: wall reinforcing bar, 4a: vertical reinforcement, 4b: horizontal reinforcement 5: concrete, 6 : Ring steel plate 7: Rebar cage, 8: Formwork, 9: External hanging scaffold 10: Inner stage.

Claims (1)

[Claims] (1) A bent reinforcing bar with a bent tip is horizontally joined to the steel plate that is vertically joined to the steel plate that forms the inner surface of the wall, and the tip of the bent reinforcing bar is engaged with the wall reinforcing bar to create concrete. A steel plate concrete wall structure made by pouring.