JPH074608U - Joining structure of joint part of electromagnetic shield discard formwork - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Providing a joint structure for the joints of the discarded formwork that can be electrically connected when electromagnetically shielding the building. [Structure] A band-shaped electromagnetic shield material 2 is embedded in a discarding mold 1. Furthermore, the end surface of the discarding mold 1 is formed into a tapered surface 4, and the joint portion 3 expanded outward by the tapered surface 4.
Is formed, and an electromagnetic connection is made between the discarding molds that are adjacent to each other by sealing an electromagnetic shield material or the like.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is an electromagnetic shield discarding type that enables electrical connection between the discarding typeframes when constructing the frame of the structure of the space to be electromagnetically shielded by using the discarding typeframe in which the electromagnetic shield material is embedded. The present invention relates to a joint structure of frame joints.

[0002]

[Prior art]

 Conventionally, a precast concrete panel for electromagnetically shielding a certain space has been disclosed in Japanese Utility Model Publication No. 64-12833. Thus, the precast concrete panel described in this publication is obtained by mixing powdery or flake-shaped ferromagnetic material into a precast concrete panel formed by placing cement mortar or concrete in a mold. Further, when the cement mortar or concrete is cast, a woven cloth or mesh made of expanded metal or conductive fibers is placed in the cement mortar or concrete in the form.

[0003]

[Problems to be solved by the device]

 Since the above-mentioned conventional precast concrete panel is a structure, it is required to have a high quality control when it is preliminarily produced in a factory, which causes a cost increase. Further, since the precast concrete panel has a large thickness, the size of the joint portion also becomes large, so that the amount of electrical connecting material becomes large and the construction is difficult.

Therefore, in the case of electromagnetically shielding a building, a small amount of electromagnetic shielding material can be enclosed in the joints for electrical connection, which is a technical problem to be solved in order to simplify construction management and contribute to cost reduction. Therefore, the present invention aims to solve the problem.

[0005]

[Means for Solving the Problems] The present invention has been proposed to achieve the above-mentioned object, and is made up of mutual discarding forms made of a wood fiber cement board in which an electromagnetic shield material is embedded in a strip shape inside. The joint structure is such that at least one of the discarding molds has a taper surface so that the joints of the jointing surface spread outward, and the joints have a tapered surface. It is a joint structure of joints in which a conductive sealant is sealed so as to make contact with the electromagnetic shield, and a joint structure of discarded forms made of wood fiber cement board in which electromagnetic shield material is embedded in a strip shape inside. At least one of the discarding molds has a tapered surface so that the joint portion of the joint surface expands inward, and the joint portion is mixed with a conductive powder, an adhesive material, and a water-absorbing polymer. A string-shaped member is installed There is provided a bonding structure for joints that are.

[0006]

[Action]

 The discarding form in the invention according to claim 1 is formed of a wood fiber cement plate or the like, and a band-shaped electromagnetic shield material is embedded inside the discarding form, and the electromagnetic shield material is They are integrally bonded with a wood fiber cement board. Thus, the end surface of the discarding form is cut to form a tapered surface. Then, the tapered surface is beveled so that the joint portion formed between the adjacent discarding form expands outward. Therefore, when constructing the structure on site, the discarding molds are assembled and the joints are formed adjacent to each other, and the conductive sealant is enclosed in the joints. Thus, the conductive sealant can easily make an electrical connection with the electromagnetic shield material embedded in a band shape in the discarding mold.

Further, in the invention according to claim 2, when the structure is constructed on site using the discarding molds whose joints are designed to expand inwardly, they are formed between the discarding molds. A string-like member mixed with a conductive powder, an adhesive, and a water-absorbing polymer is inserted into the joint portion. In that case, the high-molecular water-absorbing polymer swells by absorbing water, and the electric connection between the discarding molds adjacent to each other at the joint can be easily performed. Also, after the concrete hardens, it dries and the high molecular weight water-absorbing polymer tries to shrink, but it hardens in a state where it is swollen by the admixed adhesive.

[0008]

【Example】

 An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a partially cutaway vertical sectional view showing an embodiment of the first aspect of the present invention. In the figure, 1 is a discard form. The abandoned form 1 is formed of a light material such as a wood fiber cement board, and a band-shaped electromagnetic shield material 2 is embedded in the abandoned form 1.

Further, when the discarding formwork 1 is assembled at the site as a formwork of a structure, the joint portion 3 formed on the joint surface with the adjacent discarding formwork 1 is expanded outward. As described above, at least one of the end faces of the discarding mold 1 is obliquely cut to form the tapered surface 4. However, in this embodiment, tapered surfaces 4 and 4 are provided on both of the discarding molds 1 and 1, respectively. Further, the electromagnetic shield materials 2 and 2 are exposed on the tapered surfaces 4 and 4. Therefore, when assembling these discarding molds 1, 1 ... In the field, a backup material is provided from the outside of the joint portion 3 formed by the tapered surfaces 4, 4 of the adjacent discarding molds 1, 1. Insert 5. The material of the backup material 5 should not be particularly limited.

Further, after inserting the backup material 5, a conductive sealant 6 is enclosed in the joint portion 3. Thus, the conductive sealant 6 can be used in a small amount by inserting the backup material 5, but the backup material 5 may not be enclosed. Further, by enclosing the electrically conductive sealant 6, the electromagnetic shield materials 2 and 2 of both the discarding molds 1 and 1 are electrically connected to each other. Therefore, when the concrete 7 is cast using the abandoned formwork 1, 1, ..., The concrete 7 is integrated with the abandoned formwork 1, 1 ,.

Next, an embodiment of the invention according to claim 2 will be described with reference to FIG. It should be noted that the portions that are symmetric to the configuration shown in FIG. 1 are given the same reference numerals and the description thereof will be omitted. Since the abandoned formwork 1, 1 ... Builds the structure of the building as described above, it is assembled at the site as a formwork of the structure. Then, a string-like member 8 in which a high-molecular-weight water-absorbing polymer is mixed with the conductive powder and the adhesive is inserted into the joint portion 3 formed by the tapered surfaces 4 and 4 of the two adjacent discarding forms 1 and 1. To do. In such a case, the high-molecular weight water-absorbing polymer swells due to water-absorption and joins both the tapered surfaces 4 and 4 in the joint portion 3. In this way, the electromagnetic shield materials 2 and 2 embedded in both the discarding molds 1 and 1 are electrically connected to each other. Therefore, if concrete 7 is placed using the discarding molds 1, 1, ..., The concrete 7 is integrated with the discarding molds 1, 1 ,.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified version.

[0013]

[Effect of device]

 As described in detail in the above one embodiment, the present invention forms the structure of the building by integrating the discard formwork with the concrete to be cast, and The electromagnetic shield material is buried, and a small amount of connecting material such as a conductive sealant, which is sealed in the joint formed between the adjacent discard molds, is sufficient, and at the same time, both of the discard molds that are adjacent to each other are used. The electrical connection of the frame is made. In this way, compared to the conventional structure construction using precast concrete panels, the abandoned formwork itself can be made thinner and lighter, so that the abandoned formwork can be continuously produced and the construction is extremely easy. However, there is no need for special electromagnetic shielding work, the construction period can be shortened, and large reductions in manufacturing costs can be expected.

[Brief description of drawings]

1 is a partially cutaway vertical sectional view showing an embodiment of the invention according to claim 1;

FIG. 2 is a partially cutaway vertical sectional view showing an embodiment of the invention according to claim 2.

[Explanation of symbols]

 1 Discarded formwork 2 Electromagnetic shield material 3 Joint part 4 Tapered surface 5 Backup material 6 Conductive sealant 7 Concrete 8 String-shaped member

Claims (2)

[Scope of utility model registration request] 1. A joint structure for mutually abandoning forms formed of a wood fiber cement plate in which an electromagnetic shield material is embedded in a strip shape, wherein joint portions of the joint surface are spread outwardly. A joint structure of joints in which at least one of the discarding molds has a tapered surface, and a conductive sealant is enclosed in the joints so as to contact the electromagnetic shields in the respective discarding molds. 2. A joint structure for discarding molds, which is formed of a wood fiber cement plate in which an electromagnetic shield material is embedded in a strip shape inside, and the joint portion of the joint surface spreads inward. A joint structure for joints in which at least one of the discarding molds has a tapered surface, and a string-like member mixed with a conductive powder, an adhesive, and a water-absorbing polymer is installed in the joint.