JP2717129B2 - Buildings using square hollow steel members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a structure using a square hollow steel member, which is excellent in workability, has sufficient strength, and is effectively used as an underground structure or an evacuation facility. It is intended to provide a building that can be used as a living space and that has excellent usage. (Industrial application field) Various building or steel members for structures. (Prior art) Houses and other structures are indispensable facilities for securing a living space or a work space, and various methods have been proposed and practically used for the structure or construction. It is common to first set up a support member, such as a beam, and then attach the wall or ceiling and floor to the support member. In recent years, the use of concrete or mortar has become widespread. In this case, too, concrete according to the above-described method is constructed by forming a formwork, forming the above relationship, and arranging reinforcing bars and the like. And the mold is removed after curing. Of course, the basic construction method is the same as described above even if the man-hour is reduced by using a precast product. Recently, attention has been paid to using underground due to soaring land prices especially in urban areas, but this underground construction is more complicated than on the ground, and excavation is performed after connecting steel sheet piles. After the work space is secured, the construction is performed by the above-described method, and then the steel sheet piles are extracted and back-filled. (Problems to be Solved by the Invention) Regardless of the method of obtaining the above-mentioned conventional structure, the number of steps is large and the cost is high. That is, in the case of a ground structure, it is necessary to carefully carry out the foundation work in order to prepare and set up the columns. The installation and the subsequent setting of the floor, ceiling and wall require considerable construction time and man-hours, and are naturally expensive. In the case of a concrete structure, the same relationship as described above is required for the attachment of the steel frame, and the handling of the formwork is involved, which is more complicated than the above-described case in which the wooden structure is assumed. Also, it is necessary to sufficiently consider cracking and the like. Underground structures are basically different from above-ground structures, and are very difficult. That is, the excavation process, prevention of earth and sand collapse, countermeasures against groundwater, and the like are required, and even a concrete structure leaks water due to cracks, which requires extremely man-hours to solve the problem. (Constitution of the Invention) (Means for solving the problems) A plurality of rectangular hollow steel members are used, and the width of an opening connecting portion formed by projecting from the side surface of each of the rectangular hollow steel members is defined by the rectangular hollow member. 60 to 95% of the length of the side surface of the steel member where the opening connection portion is formed, and these square hollow steel members are connected by joining the above-described opening connection portions to each other, and thus connected. Concrete or mortar is filled into the gap between the square hollow steel members formed by the outer surfaces other than the above-described opening connection portions or the opening connection portions protruding as described above between the square hollow steel members to form a support structure. A structure using a square hollow steel member characterized by the above-mentioned. By using a plurality of square hollow steel members, for example,
A hollow steel member of about 2 m or about 3 m can be used, which makes it easy to carry it from a hollow steel member manufacturing plant to a construction site by truck or the like. By connecting a plurality of the square hollow steel members, a sufficient life or work space can be easily and freely formed in accordance with the floor space or construction conditions at each construction site. This is achieved by setting the width of the opening connecting portion projecting from the side surface of the rectangular hollow steel member to be 60 to 95% of the length of the side surface of the rectangular hollow steel member where the opening connecting portion is formed. The inside of the hollow steel member connected by the opening becomes an integrated space connected in a plane, and forms a space equivalent to an integrated structure for internal use. That is, even in the integrated structure, a proper partition wall must be formed between the respective chambers, and the opening that exceeds 60% of the length of the hollow steel member as a material is formed by a plurality of square hollow steel members. There is almost no hindrance in using the internal space of the integrated structure used. In the one in which the rectangular hollow steel members are connected to each other by the opening connecting portion protruding from the side surface as described above, the outer surface other than the opening formed on the peripheral side of the protruding opening connecting portion or projecting as described above By filling concrete or mortar into the gap formed by the opening connection part, the square hollow steel member or the opening connection part protruding from the side thereof acts as a formwork for placing concrete or the like. Concrete or the like cast in the section will act as a column in the vertical direction, and will act as a beam in the horizontal direction. In particular, since the structure has a structure in which concrete and the like having excellent compressive strength and steel members and the like having excellent bending strength are combined and integrated, excellent strength can be obtained. In the case of the above-ground structure, it is natural that the remaining wall surfaces of the plurality of square hollow steel members connected as described above can be provided with openings for lighting, ventilation, or entering and exiting the underground structure. In such a case, the remaining steel member wall surface of the steel member as described above serves as a waterproof wall as it is, thereby completely preventing intrusion of groundwater or the like. In the case of this underground structure, excavation is relatively easy, since it is sufficient to perform excavation for each rectangular hollow steel member as described above. It can be easily and simply constructed underground and above ground, and a multi-layered structure can be easily and stably constructed by simply superimposing a square hollow steel member. The rectangular hollow steel member is not only strong and nonflammable, but also has a radiation shielding property, and thus effectively functions as a disaster evacuation facility like a nuclear shelter. (Examples) Specific embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in the figure, a plurality of rectangular hollow steel members 1 whose axial direction is perpendicular to the paper surface is used as a raw material, and the rectangular hollow steel members 1, 1,... The connecting portions 12 are formed so as to protrude from the outer surface of the square hollow steel member 1, and the opening connecting portions 12 are joined to connect the plurality of square hollow steel members 1, 1. In addition, in order to facilitate such a connection operation and to obtain a strong and stable connection, each opening 11
It is preferable that the connecting portion 12 is formed by folding back at the open end of the connecting portion, and the connecting portions are connected to each other by the connecting means 5 such as a bolt. The rectangular hollow steel member 1 may have a height of about 2 m and a width appropriately larger or smaller than the height, but the opening 11 is not limited to the opening connecting portion of the square hollow steel member 1 described above. The length of the side surface formed by 12 is 60% or more and up to about 95%, and thus the opening 11 is formed as described above by forming the opening 11 that exceeds 60% of the length of the material steel member 1. The interior space of each of the rectangular hollow steel members 1, 1,... Is substantially integrated and connected, and the sense of narrowness due to the hollow steel member as a unit material can be eliminated. Either one or both of the openings 11 and 11 connected to face each other may be provided with any of a sliding door, a door, an accordion-type partition member, and the like. As described above, concrete or mortar is cast into the gap 3 between the rectangular hollow steel members 1, 1 which is the peripheral side of the openings 11, 11 at the connection between the opening connecting portions 12. It is a matter of course that a steel frame or a reinforcing bar may be appropriately disposed in such a gap portion 3, and the cast layer 4 of concrete or the like cast as described above functions as a column material in the vertical direction. None, and acts as a beam in the horizontal direction, but in any case, forms a structure in which concrete or the like and a hollow steel member or the like are combined and integrated. The connecting portion 12 also contributes to the integration of such a hollow steel member with concrete or the like. The connection by the opening connecting portion 12 as described above can be employed not only in the horizontal direction but also in the vertical direction, whereby the multi-story building is configured easily. In the case of an underground structure, it is natural that the rectangular hollow steel member itself functions as a waterproof wall. When the structure is an above-ground structure, an opening 6 such as a window is formed for the purpose of lighting and ventilation. An entrance 7 is provided. In order to form the pillar or the beam by casting concrete or the like as described above, the recessed portion 14 is formed in the corner of the rectangular hollow steel member 1 and the like other than the opening 11 as shown in FIG. May be formed. In the case of an underground structure, a concrete casting layer can also be formed on the remaining outer surface of the square hollow steel member 1, thereby reinforcing the structure and improving the corrosion resistance of the square hollow steel member. In the case of a ground structure, mortar or spray coating is formed on the outer surface of the square hollow steel member 1. Some of the modifications of the square hollow steel member employed in the present invention are separately shown in FIGS. 4 (a) to 4 (f), and the opening 11 can be formed to project from an appropriate side surface. In the case of the present invention, the roof is essentially unnecessary even in the case of a ground structure, but may be appropriately adopted in appearance. It is clear that the top surface can easily be used as a rooftop, and there is nothing particularly difficult to waterproof. Attach the floor or ceiling in the interior space,
Naturally, an atmosphere suitable for a living environment can be formed by painting the wall. "Effects of the Invention" According to the present invention as described above, it is excellent in workability, has sufficient strength, and can be effectively used as an underground structure or evacuation facility, and of course, is used as a living space It is an invention that is industrially highly effective because it can appropriately provide an excellent construction in terms of sex.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show the technical contents of the present invention. FIG. 1 is a horizontal sectional view of a structure according to the present invention, and FIG. FIG. 3 is an explanatory view showing another embodiment of the rectangular hollow steel member, and FIG. 4 is a plan view showing some examples of the rectangular hollow steel member used in the present invention. It is. However, in these drawings, 1 is a square hollow steel member, 3
Is a gap portion, 4 cast layers such as concrete, 5 is a connecting means such as a bolt, 6 is an opening such as a window, 7 is an entrance, 11 is an opening, 12 is a connecting portion, and 14 is a recessed portion. is there.

Claims (1)

(57) [Claims] A plurality of square hollow steel members are used, and the width of the opening connection portion formed by projecting from the side surface of the square hollow steel member is set to the length of the side surface of the square hollow steel member where the opening connection portion is formed. 60% to 95% of the square hollow steel members are joined together by joining the above-described opening connecting portions to each other, and the outer surface or the other than the opening connecting portion between the square hollow steel members thus connected is connected. A structure using a rectangular hollow steel member, wherein concrete or mortar is filled in a gap between the rectangular hollow steel members formed by the protruding opening connecting portions to form a support structure.