JP3210102U - Wind pressure lateral rotation and settlement prevention structure - Google Patents

Abstract

Provided is a structure for preventing lateral rotation and settlement of a column, which can prevent lateral rotation due to wind pressure of a column steel pipe with a simple configuration and can prevent settlement due to its own weight. A steel pipe 1 is buried in the ground. The steel pipe 1 has a flange 2 for connecting and fixing the flange at the lower end of the ground support steel pipe at the upper end. The lower protrusion 3 is fixed to the lower surface of the flange 2. An auxiliary pile 4 is embedded at a predetermined position in the horizontal direction of the steel pipe 1. A side protrusion 5 is fixed to the side surface near the upper end of the auxiliary pile 4. An anti-rotation material 6 is fixed to the lower protrusion 3 and the side protrusion 5. An anti-sag plate 7 is fixed to the anti-rotation material 6 so as to spread in the horizontal direction from the anti-rotation material 6. [Selection] Figure 1

Description

  The present invention relates to a wind pressure lateral rotation and prevention structure of a support column.

  Conventionally, steel pipes have been used for pillars such as lighting, traffic lights, signposts, etc. However, the conventional pillars are likely to rotate due to the repeated wind pressure of the crosswind, and the pillars tend to sink due to their own weight. Therefore, concrete steel pipe piles for foundation and concrete foundations on which bolts are planted are taken in advance, but the construction is complicated and requires a work period, so improvement is desired. Yes. Therefore, the rotation due to wind pressure and the settlement due to its own weight have been dealt with by increasing the size of the foundation concrete, but there are cases where it cannot be dealt with depending on the local situation, and there is a problem that it takes a construction period.

  Corresponding to the problem, there is one in which an H-shaped steel is used for the embedded member, and a resistance plate is attached to the upper side surface of the H-shaped steel to prevent its rotation and twist. However, even this technique has no effect on settlement and cannot sufficiently cope with rotation.

  In another technique, a method of assembling a lighting fixture pole is disclosed (see Patent Document 1). In that technology, the pipe-like embedded member buried in the ground and the pole member formed by the two-stage connecting pipe projecting to the ground are separated, and the pole member and the embedded member are hingedly connected via a substrate at the site. Assembled. The pole member is retractable, and the pole member can be manually tilted from the root via a hinge for repair and inspection of the lighting fixture. The steel pipe placed in the ground and the steel pipe built on the ground are separated and assembled by bolt joint.

Japanese Patent Laid-Open No. 53-1980

  However, the technique described in Patent Document 1 has a problem that the pipe-shaped embedded member is easily rotated by wind pressure and the pole member is also rotated, so that the illumination location is easily changed and repairs frequently occur. In addition, there is a problem that the problem of settlement due to the weight of the upper steel pipe tends to occur.

  The present invention has been made by paying attention to such problems, and provides a structure for preventing lateral rotation and settlement of a strut that can prevent lateral rotation due to the wind pressure of the support steel pipe with a simple structure and prevent settlement due to its own weight. The purpose is to do.

  In order to achieve the above object, in the structure of the wind pressure lateral rotation and settlement prevention of the support according to the present invention, the steel pipe (1) is embedded in the ground, and the steel pipe (1) is connected and fixed to the flange at the lower end of the support steel pipe on the ground. A lower projecting piece (3) is fixed to the lower surface of the flange (2), and an auxiliary pile (4) is embedded in a predetermined position in the transverse direction of the steel pipe (1). A side protrusion (5) is fixed to the side surface near the upper end of the auxiliary pile (4), and an anti-rotation material (6) is fixed to the lower protrusion (3) and the side protrusion (5). The anti-sag plate (7) is fixed to the anti-rotation material (6) so as to spread more horizontally than the anti-rotation material (6).

  In the structure for preventing wind pressure lateral rotation and settlement of the support according to the present invention, the flange at the lower end of the steel pipe on the ground is connected and fixed to the flange (2) of the steel pipe (1), and the lower protrusion (3) on the lower surface of the flange (2). Since the anti-rotation material (6) is fixed to the side protruding piece (5) of the auxiliary pile (4), it is possible to prevent lateral rotation due to the wind pressure of the column steel pipe with a simple configuration. Further, since the anti-sag plate (7) extending in the horizontal direction from the anti-rotation material (6) is fixed to the anti-rotation material (6), it is possible to prevent subsidence due to its own weight with a simple configuration. It can be done in a short period of time by simple work and is economical.

  According to the present invention, it is possible to provide a structure for preventing wind pressure lateral rotation and settlement of a strut that can prevent lateral rotation due to the wind pressure of the support steel pipe with a simple configuration and prevent settlement due to its own weight.

It is the (A) top view and (B) front view which show the wind pressure lateral rotation of a support | pillar of embodiment of this invention, and a settlement prevention structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a structure for preventing wind pressure lateral rotation and settlement of struts according to an embodiment of the present invention.
In carrying out the present invention, it is necessary to bury the round steel pipe 1 for burying. For example, the following method is used. First, an auxiliary steel pipe having a flange at the lower end is connected and fixed via a flange to the buried round steel pipe 1 having a flange 2 at the upper end shown in FIG. Next, it is positioned so that both steel pipes are placed below the screw shaft where the helical blades of the auger rod are located, and the gap between the helical blades and the embedded round steel pipe is made small and sharpened. And a scraping piece near the tip are inserted into both steel pipes.

  The rotating shaft of the auger rod is protruded from the auxiliary steel pipe, and the auxiliary steel pipe and the auger rod are integrated in rotation. Then, the upper end portion of the auger rod is rotated and pressed by the building column wheel, and the buried round steel pipe is buried at a predetermined depth. Thereafter, the auger rod is reversely rotated and pulled out, and the auxiliary steel pipe is pulled away from the buried round steel pipe 1.

  The auxiliary pile 4 made of a round steel pipe is buried at an appropriate depth so as to be parallel to the round steel pipe 1 at a position spaced apart from the buried round steel pipe 1 in the lateral direction by a predetermined distance. A lower protrusion 3 is fixed to the lower surface of the flange 2 at the upper end of the buried round steel pipe 1. A side protrusion 5 is fixed to the side surface near the upper end of the auxiliary pile 4. The left and right ends of the anti-rotation material 6 are fixed to the lower protrusion 3 and the side protrusion 5 with bolts and nuts, respectively. The anti-rotation material 6 is given strength by using a C-type steel fixed back to back.

  A rectangular flat plate-shaped anti-sag plate 7 is fixed to the upper portion of the anti-rotation material 6 so as to spread in the horizontal direction from the anti-rotation material 6. The width of the settlement prevention plate 7 is, for example, 4 to 5 times the width of the rotation preventing material 6. Thus, the wind pressure lateral rotation and settlement prevention structure of the support column is constructed. Finally, the flange at the lower end of the column steel pipe projecting to the ground is integrally connected to the flange 2 of the round steel pipe 1 for embedding.

  The structure of the wind pressure horizontal rotation and settlement prevention of the strut thus constructed is such that the flange at the lower end of the ground strut steel pipe is connected and fixed to the flange 2 of the steel pipe 1, and the lower protrusion 3 on the lower surface of the flange 2 and the side impact of the auxiliary pile 4 Since the anti-rotation material 6 is fixed to the piece 5, it is possible to prevent lateral rotation due to the wind pressure of the column steel pipe with a simple configuration. Moreover, since the anti-sagging plate 7 extending in the horizontal direction from the anti-rotation material 6 is fixed to the anti-rotation material 6, it is possible to prevent subsidence due to its own weight with a simple configuration. Thereby, it can be carried out in a short period of time by a simple work, and is economical.

In addition to the rectangular flat plate shape, the settlement prevention plate 7 may have a curved shape such that the lower side is recessed, or a shape obtained by bending the peripheral edge of the flat plate downward.
When embedding the round steel pipe 1 for embedding, use an auger rod provided with a hook-like body with a concave groove on the inner surface at the tip of its screw shaft, and the auxiliary steel pipe projecting at the upper end of the outer periphery. The auxiliary steel pipe and the auger rod may be integrated with each other by rotating the groove and the protrusion using a member provided with a strip.

  Further, when the auxiliary pile 4 is embedded, the groove of the bowl-shaped body integrated with the auger rod may be applied to the top of the auxiliary pile 4 and the auger rod may be rotated and pressed.

  In order to give strength to the flange 2 at the upper end of the round steel pipe 1 for embedment and the flange at the lower end of the column steel pipe projecting to the ground, a square shape is usually used, and a rib plate is provided on the flange surface. It is good to provide it radially. The lower projecting piece 3 on the lower surface of the flange 2 can similarly provide a rib effect.

  According to the present invention, it is possible to embed the round steel pipe 1 in the ground, connect and fix a column steel pipe having an appropriate shape on the ground, and embed the auxiliary pile 4 using the round steel pipe. If these are used, it becomes easy to implement the structure for preventing the wind pressure lateral rotation and the settlement of the support column, and it is widely spread.

DESCRIPTION OF SYMBOLS 1 Round steel pipe for embedding 2 Flange 3 Lower protrusion of flange lower surface 4 Auxiliary pile 5 Side protrusion near side of auxiliary pile top 6 Anti-rotation material 7 Settling prevention plate

Claims (1)

Steel pipe (1) is buried in the ground,
The steel pipe (1) has a flange (2) for connecting and fixing a flange at the lower end of a ground support steel pipe at the upper end,
A lower protrusion (3) is fixed to the lower surface of the flange (2),
Auxiliary pile (4) is embedded in a predetermined position in the transverse direction of the steel pipe (1),
A side protrusion (5) is fixed to the side surface near the upper end of the auxiliary pile (4),
An anti-rotation material (6) is fixed to the lower protruding piece (3) and the side protruding piece (5),
The anti-sag plate (7) is fixed to the anti-rotation material (6) so as to spread more horizontally than the anti-rotation material (6).
A structure that prevents the wind pressure from rotating laterally and sinking.

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