JP3564411B2 - Installation method of inclined structure consisting of PC stairs - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for installing an inclined structure composed of precast concrete steps.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a form of a cast-in-place concrete staircase is installed by obliquely supporting an inclined surface of the form with a plurality of supports from below so as to have a predetermined inclination angle. On the other hand, as shown in FIGS. 6 and 7, the conventional support 30 has a structure having a horizontal base plate 31 at the lower end and a horizontal receiving plate 32 at the upper end. It is designed to receive structures. Therefore, when supporting an inclined surface such as a form of a concrete staircase with a support, if the support is set up vertically, only the edge of the receiving plate hits the inclined surface, and the receiving plate and the inclined surface are in line contact with each other and the axis of the support is The formwork is supported in an offset load state at a position deviated from the above, and becomes extremely unstable.
[0003]
For this reason, for example, the installation of the formwork 35 of the cast-in-place concrete staircase requires the support plate 32 of the vertically erected support 30 to support the inclined surface 36, but is enlarged to FIG. 7A or FIG. 7B. It is performed by any of the methods shown below. That is, the joists 33 composed of approximately 90 × 90 square members and the square members having different sizes of the crosspieces 34 are superposed and arranged at right angles (in the inclined direction and the width direction) so that the corners of the square members substantially coincide with the axis of the receiving plate. By installing, an uneven load is adjusted, and a slip stopper 37 is inserted into a space between the inclined surface of the square member and the receiving plate and fixed with a nail. And, since only the support which stands upright is unstable, as shown in FIG. 6, usually, the support is further set up obliquely so that the receiving plate of the support comes into surface contact with the inclined surface of the inclined structure, The support is supported by a combination of a vertical support 30 and an oblique support 30 '.
[0004]
[Problems to be solved by the invention]
Therefore, in the conventional method of installing an inclined structure using supports, the supports must be supported by a large number of supports in a combination of a vertical state and an oblique state, and the support work by each support is complicated, inefficient, and It is unstable. In order to adjust the angle of the inclined structure, there is a problem that the work of fixing the inclined surface and the support is unstable, so that the work is dangerous, difficult to perform, requires skill, and takes a long time. .
[0005]
The present invention has been devised in view of the above circumstances, and stably supports an inclined structure such as a formwork of a concrete stair or a precast concrete stair, by simply standing up a support vertically. The support and the inclined structure for the method of installing the inclined structure, which can easily adjust the horizontal and vertical of the inclined structure, reduce the number of supports, and make the installation work safe, easy and efficient The purpose is to provide an installation method.
[0006]
[Means for Solving the Problems]
The support for an inclined structure installation method of the present invention that achieves the above object is a support for supporting an inclined structure from below in an installation method of an inclined structure such as a stair, and a support having an inclined support surface is provided at an upper end. It is characterized by being provided in a part.
[0007]
The installation method of the inclined structure of the present invention is an installation method of an inclined structure such as a staircase, and a support having an upper end portion provided with a support having an inclined fixing surface is vertically set, and the support is provided. It is characterized in that the inclined surface of the inclined structure is supported from below by the inclined fixed surface. By having a structure in which a plurality of supports for supporting the inclined structure are connected by a brace having a turnbuckle, the length of the brace can be adjusted by the turnbuckle, and the horizontal and vertical degrees of the structure can be easily reduced. Can be adjusted.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
FIGS. 1 and 2 show a state in which a PC stair is installed by the method of installing an inclined structure according to the present invention and the support used for the method. In the figure, reference numeral 1 denotes a PC stair (inclined structure), and an inclined surface 2 of the stair is supported by an appropriate number of supports 5. The support according to the present embodiment utilizes a conventional support, and is configured such that a support tool described later is removably inserted and mounted on the top of the support. That is, the support 5 of the present embodiment is configured such that the support main body 4 is configured as a pipe support, and a lower column tube (lumbar tube) 6 having a horizontal base plate 9 at a lower end, and a height adjustable at an upper portion of the lower column tube. The upper column tube 7 can be appropriately adjusted in the length direction by a known adjusting means 8 such as an adjusting screw.
[0009]
The receiving plate 3 is fixed to the top of the upper column tube 7, but as shown in an enlarged view in FIG. 2, the top of the upper column tube is opened, and the inclined surface 2 of the inclined structure is formed in the opening. Is mounted so as to be detachably inserted. The support 10 has an inclined support plate 11 which is engaged in surface contact with the inclined surface 2 of the inclined structure. In this embodiment, a vertical member 13 for fixing the inclined support plate 11 in an inclined state is provided. An insertion tube 14 is formed in the shape of a right-angled triangle formed by the horizontal plate 12, and is fixed to the lower surface of the horizontal plate 12 to be inserted into the top of the support body 4. The inclined support plate 11 of the support 10 is formed so as to have a gradient substantially similar to the inclination angle of the stairs with respect to the axis of the support. Therefore, only by erecting the support vertically, the entire inclined support plate of the support can be in surface contact with the inclined surface 2 of the inclined structure to support the inclined structure. Can be stably supported.
[0010]
The support 10 only needs to have the inclined support plate 11 that satisfies the above conditions, and the shape thereof is not particularly limited. In addition, the material is made of metal in the present embodiment, but is not particularly limited, and is not limited to metal, and may be wood or plastic according to the application. A bracket 15 for engaging the brace 16 is fixed near the top and the bottom of the support body 4. As shown in FIG. 3 (a), the bracket 15 is generally provided with an inclined bracket 15a arranged in an inclined direction so as to connect a support standing up along the inclined direction of the stairs, and along a width direction of the stairs. The width direction brackets 15b installed so as to be able to connect the arranged supports are arranged at a right angle, so that a plurality of vertically erected supports can be connected in the width direction and the inclination direction of the stairs. However, the number and mounting positions of the brackets are not limited to this, and depending on the position of the support, one bracket as shown in FIG. 3 (b) and a right and left straight line as shown in FIG. 3 (c). Two or not shown, but can be arbitrarily selected, such as three at right angles or four at right angles.
[0011]
A turnbuckle 17 is provided in the middle of the brace 16, and the length of the brace 16 between the supports can be arbitrarily adjusted by the turnbuckle. Therefore, the inclination in the width direction and the inclination direction of the inclined structure can be easily adjusted by the turnbuckle. At this time, since there is no slipper or nailing for fixing the receiving plate to the inclined surface of the inclined structure as in the related art, it can be easily adjusted only by the turnbuckle.
[0012]
FIGS. 4 and 5 relate to another embodiment of the support. In the support 20 of the embodiment shown in FIG. 4, the support 22 fixed to the support body 21 is a horizontal plate 18, an inclined support plate 23, and a vertical member. 19, a fixing hole 24 is formed in the inclined support plate 23 of the inclined support plate 23, and can be connected and fixed to the inclined surface of the inclined structure with bolts 25 and the like as shown in FIG. ing. In the support 26 of the embodiment shown in FIG. 5, the support 27 supports the inclined support plate 28 with a round bar 30 at the center of the horizontal plate 29. In the embodiment shown in FIGS. 4 and 5, a case where the support and the support body are integrally fixed has been described. For example, as shown in FIG. 2, a support having an inclined support plate and a horizontal plate is separately provided. The support may be configured to be detachably attached to a horizontal support plate provided on the top of the support body in a conventional support by bolts or inserted. With such a configuration, when supporting an inclined structure, a support is attached and used, and when supporting a horizontal surface, the support can be removed to use as a normal support.
[0013]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said Embodiment, A various design change is possible within the range of the technical idea. In the above-described embodiment, the installation of the PC concrete stairs has been described. However, the present invention is not limited to this, and can be applied to the installation method of the formwork of the cast-in-place concrete stairs and other inclined structures.
[0014]
【The invention's effect】
As described above, according to the support for installing the inclined structure and the method for installing the inclined structure of the present invention, the support provided on the top of the support body is provided with the support upright. Since the surface is in direct surface contact with the inclined surface, the inclined surface of the inclined structure can be stably supported only by setting the support vertically. Therefore, a joist, a pier, a non-slip, or the like is provided between the support receiving plate and the inclined structure as in the related art, there is no need for nailing, the work can be easily performed, and the support is set in the vertical state and the inclined state. There is no need to support, and the number of supports can be reduced. Further, horizontal and vertical adjustment of the inclined structure can be easily performed, and the installation work can be performed safely and quickly and efficiently, and the installation cost can be drastically reduced.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a method of installing a PC stair by a method of installing a tilted structure according to the present invention.
FIG. 2 is an enlarged view of a support shaft of the support shown in FIG. 1;
FIGS. 3A to 3C are plan views showing how a bracket is attached to a support body.
4A and 4B show a support part according to another embodiment of the support of the present invention, wherein FIG. 4A is a front view and FIG. 4B is a plan view.
FIG. 5 is a perspective view showing a main part of a support according to another embodiment.
FIG. 6 is a schematic view showing a method of installing a formwork of a concrete stair by a conventional method of installing an inclined structure.
7A and 7B are enlarged views of a portion A and a portion B in FIG. 6 and show a support mode by a conventional support.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 PC staircase 2 Inclined surface 4, 21 Support main body 5, 20, 26 Support 6 Lower pillar tube 7 Upper pillar tube 8 Adjusting means 9 Base plate 10, 22 Supporting tool 11, 23, 27 Inclined support plate 12, 18 Horizontal plate 13 , 19 Vertical member 15 Bracket 16 Brace 17 Turnbuckle

Claims (1)

A installation method of gradient structure composed of PC stairs, a vertical pipe-shaped supporting body consists of support which is attached to the top portion of the support body, near the top portion of the support body, the brace engaging holes respectively The inclined brackets arranged in the inclined direction of the formed PC stairs and the width brackets arranged in the width direction are arranged and fixed at a right angle, and the support is in direct surface contact with the inclined surface of the PC stairs. A plurality of supports, each of which is composed of an inclined support plate fixed so as to have substantially the same slope as the inclined surface, and a horizontal plate and a vertical member for fixing the inclined support plate in an inclined manner, are vertically set. , P the braces with the inclined support plate so as to support directly from below the inclined surface of the PC stairs, and turnbuckle a plurality of support for supporting the PC stairs of the support Connected in the width direction and the inclination direction of the C stair, by adjusting the length of the brace by the turnbuckle, the inclined structure composed of PC stairs and adjusting the horizontal and vertical size of the PC staircase Installation method.

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