JPS63313898A - Radio wave absorbing wall - Google Patents

Abstract

PURPOSE:To improve radio wave absorbing capacity by integrally stratifying and joining a ferrite molded form onto the surface of a body. CONSTITUTION:Ferrite molded forms 2 are held among flanges and webs for adjacent holding materials 1 molded to a T-shaped section while the holding materials 1 are fixed to body concrete 4 in the rear through anchors 3 mounted to the holding materials 1. Consequently, the ferrite molded forms 2 are stratified and joined integrally onto the surface of the body concrete 4, thus constituting a radio wave absorbing wall. That is, the molded forms 2 are superposed onto the surface of the body concrete 4 through the holding materials 1 and the anchors 3 without boring anchor bolt through-holes to the body concrete 4 to the ferrite molded forms 2. Accordingly, radio wave absorbing performance is not deteriorated, and the radio wave absorbing performance of the ferrite molded forms 2 is not inhibited because the holding materials 1 are made of a nonmetal.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a radio wave absorbing wall in a structure.

(Prior art) Figures 6 and 7 show conventional radio wave absorbing walls, which are layered on the surface of the ferrite molded body (a), k-back concrete frame (1)), and are layered on the ferrite molded body (&). The concrete frame (b
) has become established. In the figure (el) is a reflecting plate.

Figures 8 to 10 show other examples of conventional radio wave absorbing walls, in which a ferrite molded body (g) 't'' is held between metal holding fittings ff1 with a groove-shaped cross section, and the holding fittings (
f) By anchoring to the concrete frame (1) via hJ', the concrete frame (1)
The ferrite molded body (g) k is attached to the ferrite molded body (g). In the figure (jl is a reflection plate.

(Problem to be solved by the invention) However, in the former case, the radio wave absorption performance deteriorates due to the force of providing through holes in the ferrite molded body, and in the latter case, due to the radio wave reflection effect by the metal holding fittings, the ferrite There is a problem in that the radio wave absorbing ability of the molded body cannot be fully demonstrated.

(Means for Solving the Problems) The present invention has been proposed in order to solve the above problems, and is a non-metallic molded body formed of adjacent T-shaped or H-shaped ferrite molded bodies. The present invention relates to a radio wave absorbing wall body that is held between flanges and webs of a holding material and is fixed to a concrete frame on the back side.

(Function) As described above, the present invention holds a ferrite molded body between each of the seven flanges and webs of adjacent nonmetallic holding members molded in a T-shape or an H-shape, and holds the holding material on the back side. By fixing to the concrete frame, the 7-piece light molded body is integrally layered and bonded to the surface of the frame, and radio waves are absorbed by the ferrite molded body.

(Effects of the Invention) As described above, the radio wave absorbing wall body according to the present invention exhibits radio wave absorption performance by the seven different molded bodies layered on the surface of the concrete structure, and in this case, the ferrite As described above, the molded body is held between each of the seven flanges and webs of a T-shaped or H-shaped non-metallic holding material fixed to the concrete frame, and has mounting holes as in the conventional structure described above. Since there are no perforations, there is no deterioration in radio wave absorption performance, and since the holding material is made of non-metal, unlike the conventional structure using a metal holding material, the electromagnetic wave reflection effect of the holding material The radio wave absorption performance of the ferrite molded body is not impaired.

(Example) The present invention will be described below with reference to the illustrated embodiments.

In the embodiment shown in FIGS. 1 to 3, (1) is Tf
It is a non-metallic holding material made of natural stone, artificial stone, plastic, glass, etc. molded into an i-section, and a ferrite molded body (2) is placed between the seven flanges and webs of the adjacent holding material (1). At the same time, the ferrite molded body (2) is fixed to the concrete body (4) on the back side via the holding material + IJt and the anchor (3) provided on the holding material (1). It is integrally layered and bonded to the surface of 4) to form the entire radio wave absorbing wall. In the figure, (5) is a radio wave reflecting plate.

In addition, on the side of the holding material (1) and the ferrite molded body (2) in contact with the concrete frame (4), a rubber-based or resin-based sealant (6) is applied to prevent efflorescence and prevent heat change. It functions as a buffer material that suppresses warping and prevents deformation due to the difference in shrinkage between the concrete and the ferrite molded body.

According to the embodiment, the ferrite molded body (2) is not provided with anchor bolt insertion holes for the concrete frame (4), and the holding material (1) and the anchor (3)
) through which the molded body (2) is connected to the concrete frame (4).
Since the holding material (1) is layered on the surface of the metal holding material, the radio wave absorption performance does not deteriorate, and since the holding material (1) is made of a non-metallic material, the holding material (1) is The radio wave absorption performance of the ferrite molded body (2) is not inhibited by the radio wave reflection effect.

FIG. 4 shows another embodiment of the present invention, the holding material (1)
is formed into a T-section with long legs, and is anchored to the concrete frame (4) by the anchoring effect of the holding material (1) itself.

In the figure, parts equivalent to those of the above embodiment are given the same reference numerals.

FIG. 5 shows still another embodiment of the present invention, in which the holding material (
1) is molded into an H-shaped cross section.

In the drawings, parts equivalent to those of the above embodiments are given the same reference numerals.

[Brief explanation of drawings]

FIGS. 1, 2, and 3 are a cross-sectional plan view showing an embodiment of the radio wave absorbing wall body according to the present invention, a longitudinal side view, and a front view of the pot, and FIG. FIG. 5 is a cross-sectional plan view showing another embodiment of the present invention, and FIGS. 6 and 7 are front views showing examples of conventional radio wave absorbing walls, respectively. Side view, Figures 8 and 9 and 1st
Figure 0 is a front view and a vertical side view and a cross-sectional plan view of another example of a conventional radio wave absorbing wall body, respectively. (1)...Nonmetal holding material (2)...Ferrite molded body (4)...Structure concrete

Claims (1)

[Claims] The ferrite molded body is held between the valley flanges and webs of adjacent T-shaped or H-shaped non-metallic holding materials, and each holding material is fixed to the concrete frame on the back side. A wall that absorbs radio waves.