JPH067077Y2 - Placing method Pole foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a placing type pole foundation.

[Prior Art] FIG. 1 and FIG.
As shown in the figure, the open surface of the H-shaped steel 1 having the plate 3 with the bolts 5 fixed to the upper end thereof is matched with the number and positions of the connection holes formed in the lower flanges of the poles to be connected in the future. A blocking plate 2 having a strength and a length capable of resisting a twisting moment is fixed to both sides (for example, an actual flat plate 2-
18544).

[Problems to be Solved by the Invention] In the conventional driving method pole foundation, at the time of driving, a driving tool to be connected to the upper side of the plate 3 is connected to the plate 3 by using the respective bolts 5. I was trying to do it.

However, if the construction soil is an ultra-hard formation, it cannot be easily placed even if a large vibration placing is used, and there are cases where it can be placed gradually by continuous operation for over 1 hour. .

In such a case, even if the driving tool is coupled with the bolts 5 on the plate 3, it violently vibrates and loosens, so that even a double nut cannot prevent this.

Thus, when the nut is loosened in this way, the driving ability of the vibration driving machine is extremely lowered, and in order to prevent such a situation, the loosening of the nut must be prevented at all costs. is there.

As a simple and reliable means to prevent such a situation, it is preferable to temporarily weld the tightened nut and bolt, but this means is to remove the driving tool.
It is necessary to cancel this temporary welding state,
Of course, when the bolt is released, the bolt 5 will be damaged. However, the original purpose of the bolt 5 is to reliably establish the connection with the flange on the lower side of the pole when establishing the pole, so the damage to the bolt 5 is fatal. There was a problem with it.

The present invention aims to prevent the nut from loosening and prevent the bolt from being damaged.

[Means for Solving the Problem] In order to achieve the above object, in the driving method pole foundation of the present invention, a required number of bolt holes 4 are bored in the plate 3, and the center of the upper end of each closing plate 2 is formed. The multipurpose window 10 is opened in the section.

[Operation] In the driving method pole foundation in which the required number of bolt holes 4 are drilled in the plate 3 as described above, the driving tool in which the upright plate 7 is vertically fixed to the central portion of the rectangular bottom plate 6 is used. No. 3 bolt 5 is joined by a connecting bolt nut 8 through the bolt hole 4, the nut and the bolt are made passive by temporary welding, and the connecting bolt nut 8 is cut and removed after the completion of driving. That is, if this connecting bolt nut 8 is made disposable, it becomes a simple and reliable means.

Further, since the H-shaped steel 1 is completely sealed by the plate 3 on the upper side and the closing plates 2 on both open side surfaces, the air contained in the H-steel is gradually compressed during the driving process and finally becomes a major obstacle to the driving. Moreover, it is impossible for the ready-mixed concrete injected into the construction hole to fill the space between the H-shaped steel 1 and the closing plate 2. However, the opened multipurpose window 10 is provided at the center of the upper end of each closing plate 2. This window 10
From this, an operator can insert his / her hand near the upper side of each closing plate 2, exhausting compressed air and enabling injection of ready-mixed concrete.

[Embodiment] An embodiment will be described with reference to the drawings. As shown in FIGS. 1 and 2, a block having strength and length capable of counteracting a twisting moment is provided on both sides of an open surface of an H-shaped steel 1. The plates 2 and 2 are fixed, and the plate 3 having a plurality of bolts 5 attached thereto is fixed to the upper side thereof. A required number of bolt holes 4, 4, 4, 4 are formed in the central portion of the plate 3 so as to face each other.

Further, multipurpose windows 10 and 10 are opened at predetermined locations in the upper center of each of the closing plates 2 and 2.

Then, as shown in FIGS. 3 and 4, a placing tool in which an upright plate 7 is uprightly fixed to the central portion of a rectangular bottom 6 which is smaller than the plate 3 is inserted through the multipurpose windows 10 and 10. Irrespective of the bolt 5, it is coupled by the coupling bolt nut 8 through the bolt holes 4, 4, 4, 4.

In this case, the nut and the bolt are made to be immovable by temporary welding, and the connecting bolt nut 8 is cut and removed after the driving is completed, that is, the connecting bolt nut 8 is a disposable means.

Next, the construction process of the casting method pole foundation of the present invention will be described. As shown in FIG. 5, a construction hole 9 having a predetermined plane area and depth is excavated, and the construction hole 9 is formed in the construction hole shown in FIG. 4 The H-shaped steel 1 in the state shown in FIG. 4 is installed, and the driving is started from the bottom of the construction hole 9, but the driving is finished when the bolt 5 on the plate 3 sinks for a predetermined distance from the ground surface, As described above, the connecting bolt nut 8 is cut and removed to remove the driving tool, and then the hole provided in the flange 11 at the lower end of the pole 12 is fitted into the bolt 5 to be nut-connected to establish it. The fresh concrete is injected into the interior, and the surface is repaired so that it is flush with the ground surface.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

Since a required number of bolt holes 4 are formed in the plate 3 on which a plurality of bolts 5 are mounted, the upright plate 7 is provided at the center of the rectangular bottom plate 6 through the bolt holes 4 regardless of the bolts 5 on the plate 3. It is possible to connect the mounting tool fixed upright with the connecting bolt nut 8, and the bolt 5 will not be damaged even in the installation process for a long time in the superhard formation.

Further, since the multipurpose windows 10 and 10 are provided at predetermined positions in the center of the upper end of each of the closing plates 2 and 2, an operator can insert his / her hand through the window 10 to tighten the coupling bolt nut 8, and also during the driving process. It becomes possible to exhaust the compressed air that is built in in, and to fill the space between the H-shaped steel 1 and the closing plate 2 with ready-mixed concrete.

[Brief description of drawings]

FIG. 1 is a plan view showing a state where bolt holes are formed in a plate,
FIG. 2 is a side view of the same as above, FIG. 3 is a plan view of a placing tool in which a square bottom plate is fixed to a plate and an upright plate is fixed to the plate by bolts and bolts, and FIG. 4 is a side view of the same. Drawing and Drawing 5 are explanatory views showing a construction state. 1 ... H-shaped steel, 2 ... Closure plate, 3 ... Plate, 4 ... Bolt hole, 5 ... Bolt, 6 ... Bottom plate, 7 ... Upright plate, 8 ... Coupling bolt nut, 10 ... Multipurpose window

Claims (1)

[Scope of utility model registration request] 1. Closure plates 2 on both sides of the open surface of H-section steel 1, respectively.
In the driving method pole foundation in which the plate 3 having the plurality of bolts 5 attached thereto is fixed to the plate 3, a required number of bolt holes 4 are bored in the plate 3 and the blockages are formed. Multipurpose window 1 at the center of the upper edge of plate 2
Placing method pole foundation characterized by opening 0.