JPH073073B2 - A method for forming a floor base in an underground structure - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a method of forming a floor base constituting a floor portion in a basement or other underground structure.

[Prior art]

Conventionally, when constructing a basement or other underground structure, an underground hole is dug in the ground to form an underground structure,
The pillar material that constitutes the skeleton of the underground structure is erected in the underground hole,
A floor beam is erected between the lower parts of the pillars, and the earth and sand on the bottom surface of the underground hole near the floor beam erected surface are finished smooth, and then,
Placing concrete on the bottom surface of the smooth underground hole,
The surface of the concrete is finished to be smooth to form a floor base.Furthermore, a wall panel is attached to the pillar material and a floor panel is laid on the floor base, and a roof panel is attached to the upper end of the pillar material to form an underground structure. I'm building.

[Problems to be Solved by the Invention]

In the above-mentioned conventional technology, when forming a floor base in an underground structure, inside the underground hole where it is difficult to work, the earth and sand on the bottom surface of the underground hole are finished to be smooth, or the concrete surface cast on the bottom surface of the underground hole. It took a lot of time to finish the surface smoothly, and there was also a problem in terms of finishing accuracy. The present invention has been made in order to solve the problems of the above-mentioned conventional techniques, and provides a method of forming a floor base that can form a floor base in an underground structure extremely easily, quickly, and accurately. Is an issue.

[Means for Solving the Problems]

In order to solve the above problems, the present invention erected a pillar material of an underground structure in an underground hole dug in the ground to form an underground structure, and erected a floor beam between the lower parts of the pillar material. In forming a floor base by placing concrete on the bottom surface of an underground hole near the floor beam material installation surface, a groove steel is used as the floor beam material and the groove beam steel of the floor beam materials facing each other is used. A rod body is movably installed between the groove portions or between the groove type steel upper surface portions, and the rod body is slidably brought into contact with the bottom surface of the underground hole and the concrete surface by using the floor beam material as a guide to finish the surface smoothly. To do.

【Example】

Hereinafter, the present invention will be described in more detail based on examples. The present invention, for example, as shown in FIG. 1 and FIG.
In the underground hole 2 dug in the ground 1 to form an underground structure,
Column members 3 and 3 made of shaped steel that form the skeleton of the underground structure
... is erected, and floor beam members 4, 4, ... made of shaped steel are installed between the lower portions of the column members 3, 3, ..., and the floor beam members 4,
In order to form a floor base 6 by placing concrete 5 on the bottom surface of the underground hole 2 near the erection surface, the floor beam member 4,
A rod body 7 made of a tubular body, a rod body, a long plate body or the like, which uses grooved steel as 4 and is movable between grooved steel groove portions of the floor beam members 4 and 4 or the grooved steel upper surface portions which face each other. Erected,
It is characterized in that the rod body 7 is slidably brought into contact with the bottom surface of the underground hole 2 and the surface of the concrete 5 using the floor beam members 4 and 4 as a guide to finish the surface smoothly. In FIG. 1, reference numeral 8 is a roof beam member erected on the upper ends of the pillar members 3, 3, ..., And roof panels (not shown) are attached to the roof beam members 8, 8 ,. To form. Further, as the pillar material 3, for example, H-shaped steel, U-shaped steel, I-shaped steel, L-shaped steel or the like may be used. When the rod body 7 is movably installed between the floor beams 4 and 4, for example, as shown in FIG. 2, a rod body having a circular cross section is used as the rod body 7, At the time of movement, roll it so that it can be moved, or use a tube body with a square cross section, a rod body, a long plate body, etc. as the rod body 7,
It may be slid so that it can be moved. Further, when the rod body 7 is slidably brought into contact with the bottom surface of the underground hole 2 and the surface of the concrete 5 using the floor beam members 4 and 4 as a guide, for example, as shown in FIG. Material 4,
The grooved steel groove portion 4 of 4 is used as a guide to slide and move to the bottom surface of the underground hole 2, and the rod body 7 is moved using the grooved steel upper surface portion 10 of the floor beams 4 and 4 as a guide. By doing so, the surface of the concrete 5 may be slidably contacted and moved.

【The invention's effect】

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the pillar material of the underground structure is erected in the underground hole dug in the ground to form the underground structure, and the floor beam material is erected between the lower parts of the pillar material and the floor. At the time of placing concrete on the bottom surface of the underground hole near the beam material installation surface to form the floor base, while using grooved steel as the floor beam material, between the grooved steel groove portions of the floor beam materials facing each other or Since a rod body is movably installed between the grooved steel upper surface parts and the rod body is guided to slide the rod body to the bottom surface of the underground hole and the concrete surface to finish it smoothly, it is extremely accurate. Using the assembled floor beams as a guide, the bottom of the underground hole and the concrete surface can be smoothed very easily, quickly and accurately to form the floor base.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of an essential part of the same embodiment. 1 ... ground, 2 ... underground hole, 3 ... column material, 4 ... floor beam material, 5 ... concrete, 6 ... floor base material, 7 ... rod body.

Claims (1)

[Claims] 1. A pillar material for an underground structure is erected in an underground hole dug in the ground to form an underground structure, and a floor beam material is erected between the lower parts of the pillar materials, and the floor beam material installation surface. When concrete is cast on the bottom surface of a nearby underground hole to form a floor base, groove steel is used as the floor beam material, and groove floor steel groove portions of the floor beam material facing each other or the groove steel upper surface portion are used. A rod body is movably installed between the floor beams, and the rod body is used as a guide to slidably contact the rod body with the bottom surface of the underground hole and the concrete surface to move the rod body to finish it smoothly. Forming method.