JP2009215815A - Substructure of steel pipe pillar steel tower for transmission of electric power - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substructure of a steel pipe pillar steel tower for the transmission of electric power which makes possible fine level adjustment by an anchor nut for installation adjustment, and makes possible easy level adjustment in a short time at the time of adjustment to the installation level of the steel pipe pillar steel tower for the transmission of electric power. <P>SOLUTION: The substructure is composed of a base plate 3 in the lowermost part, a plurality of anchor bolts 5, an anchor nut 6 for fixation, and an anchor nut 7 for installation and adjustment. The base plate 3 is provided in the lowermost part of the tower pillar 2 of the steel tower, and the plurality of anchor bolts 5 are buried in the base concrete 4 so that their tips which are projected from the base concrete 4 penetrate the base plate 3. The anchor nut for fixation is attached to the anchor bolt 5 on the top surface of the base plate 3, and the anchor nut 7 for installation and adjustment is attached to the anchor bolt on the undersurface of the base plate. A ring-shaped plate 12 is provided on the side of the anchor nut, and the ring-shaped plate has an engagement hole 11, or an engagement projection and an engagement concavity. The tip of a stick for the rotation of a nut which is inserted from a clearance between the foundation reinforcing bars 8 can be fixed by engagement. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a foundation structure for fixing a lowermost part of a tower column of a steel pipe pillar tower for power transmission to foundation concrete.

  The foundation structure shown in FIG. 5 is adopted as the foundation of the single-column steel pipe pillar tower for power transmission. This foundation structure is embedded in the foundation concrete 4 so that the ring-shaped base plate 3 provided at the lowermost part of the tower column 2 of the steel pipe column tower 1 for power transmission and the tip protruding from the foundation concrete 4 penetrate the base plate 3. A plurality of anchor bolts 5, a fixing anchor nut 6 attached to the anchor bolt 5 on the upper surface of the base plate 3, and an anchor nut 7 for installation adjustment attached to the anchor bolt 5 on the lower surface of the base plate 3. Yes.

  The anchor bolt 5 is disposed so as to surround the tower column 2 and is assembled on the bottom surface of the foundation by connecting with a plate or the like. A foundation rebar 8 is disposed around the anchor bolt 5, and a foundation concrete 4 in which the anchor bolt 5 and the foundation rebar 8 are embedded is constructed by placing concrete. From the upper surface of the foundation concrete 4, the anchor bolts 5 and the ends of the foundation rebar 8 protrude with a predetermined length, and the tower column 2 is built so that the ends of the anchor bolts 5 penetrate the base plate 3.

  An anchor nut 7 for installation adjustment is disposed on the lower surface of the base plate 3, and the installation level of the base plate 3 is adjusted by adjusting the position by rotating the anchor nut 7. After this level adjustment, the base plate 3 is fixed by the anchor nuts 6 for fixing, the gap between the base plate 3 and the foundation concrete 4 is filled with grout material, and the footing that covers the anchor bolts 5 and the ends of the foundation reinforcing bars 8 is covered. Concrete 9 is cast.

  Conventionally, when the anchor nut 7 for adjusting the installation is rotated, the foundation reinforcing bars 8 are arranged at an interval of about 20 cm around the anchor nut 7 so that it cannot be rotated by a tightening jig such as a spanner. The installation level was adjusted by striking and rotating the corners of the (hexagon nut) with a bar-shaped object such as a steel bar.

  As a prior art document related to the present invention, in Patent Document 1, in an exposed column base structure using anchor bolts and anchor nuts, level adjustment is performed by rotating an anchor nut disposed below a base plate. (Prior Art), it is described that level adjustment is performed by arranging a pipe for level adjustment through which the anchor bolt penetrates between the lower surface of the base plate of the column base and the upper surface of the anchor bolt mounting base.

  Moreover, in the reference document 2, in the foundation bolt for equipment installation setting, a level adjustment cylinder through which the tip of the foundation bolt embedded in the concrete foundation base passes is provided at the lower part of the equipment base plate. It is described that the device level is adjusted by rotating.

Japanese Patent Application Laid-Open No. 2000-1916 Japanese Utility Model Publication No. 4-53840

  When adjusting the installation level of a steel pipe pillar tower for power transmission, the conventional method of rotating the anchor nut (hexagon nut) by hitting it with a rod-shaped object such as a steel bar is as follows: (1) It is difficult to make fine adjustments in the direction of tightening or loosening the nuts because it is struck, and (2) it slips when it is struck and cannot be struck well, so it takes time to adjust the installation level.

  The present invention has been made to solve the above-described problems, and when adjusting the installation level of a steel pipe pillar tower for power transmission, it is possible to finely adjust the level with an anchor nut for installation adjustment, and to adjust the level. It aims at providing the foundation structure of the steel pipe pillar tower for power transmission which can be performed easily in a short time.

  The invention according to claim 1 of the present invention is a foundation structure for fixing the lowermost part of the tower column of the steel pipe pillar tower for power transmission to the foundation concrete, and projects from the base plate provided at the lowest part of the tower pillar and the foundation concrete. A plurality of anchor bolts embedded in the foundation concrete so that the leading end of the base plate penetrates the base plate, an anchor nut for fixing to the anchor bolt on the upper surface of the base plate, and an anchor bolt attached to the lower surface of the base plate An anchor nut for adjusting the installation is provided, and on the side surface of the anchor nut for adjusting the installation, there is provided a locking means capable of locking the tip of a rod-like member for rotating the nut. It is a basic structure of a steel pipe pillar tower for power transmission (see FIGS. 1 and 2).

  As shown in FIG. 2, the present invention is applied when the base plate is surrounded by the basic reinforcing bars and cannot be rotated by a tightening jig such as a spanner, and is disposed under the base plate. An anchoring means such as a hole or protrusion is provided on the side surface of the anchor nut for adjusting the installation (preferably a hexagonal nut), and the tip of a bar-shaped member such as a steel bar is fixed to the locking means by locking. The installation level of the base plate is adjusted by rotating the nut by tapping with.

  The invention according to claim 2 of the present invention is characterized in that, in the basic structure according to claim 1, the locking means is a plurality of locking holes formed in the nut side surface at intervals in the nut rotation direction. This is the basic structure of the steel pipe pillar tower for power transmission.

  As shown in FIG. 3, a non-through hole that does not reach the female screw hole or a through hole that penetrates to the female screw hole is formed on the side surface of the nut, and the tip of the rod-shaped member can be inserted and fixed in this locking hole. It is a thing. The locking means can be provided simply by making a hole in a commercially available nut.

  The invention according to claim 3 of the present invention is the basic structure according to claim 1 or 2, wherein the locking means is provided on the outer periphery of a ring-shaped plate provided on the nut so as to surround the side surface of the nut. A basic structure of a steel pipe pillar tower for power transmission, characterized in that it is a plurality of locking projections or locking recesses formed at intervals in the nut rotation direction.

  As shown in FIG. 4, the ring-shaped plate is a ring-shaped plate that protrudes outward from the side of the nut, and the inner hole shape is hexagonal to match the outer shape of the nut and is welded to the side of the nut. Install with etc. The outer shape of the ring-shaped plate on which the locking projections are provided is preferably hexagonal so as not to take much width, and the locking projections projecting outward are integrally provided at the center position or corner of the side. The outer shape of the ring-shaped plate provided with the locking recess is preferably circular so that the recess can be formed, and a locking recess recessed inward is provided at the center position or corner of the side of the nut. Since the locking projection or the locking recess is located outside the side surface of the nut by the ring-shaped plate, it is easy to insert the tip of the rod-shaped member and to rotate the nut.

  Moreover, it can also be set as a composite type combining the special nut of a locking hole, and the ring-shaped plate structure which has a locking projection and a locking recessed part of a ring-shaped plate.

  In the configuration as described above, a rod-like member is inserted into the side of the anchor nut for installation adjustment from between the basic rebars, and the tip of the rod-like member is inserted into the locking hole on the side of the nut or the locking projection or engagement of the ring-shaped plate. The base plate is installed and locked by a locking means such as a locking recess, and the base plate is adjusted by rotating the nut by hitting the rod-shaped member with a hammer or the like. Since the tip of the rod-like member is fixed to the side surface of the nut, fine adjustment in the direction in which the nut is tightened or loosened can be easily performed. In addition, since the tip of the rod-shaped member does not slip as in the prior art, level adjustment can be easily performed in a short time.

  (1) The nut for installation adjustment is provided with a locking means such as a ring-shaped plate with a locking hole or a locking projection or locking recess, and the tip of the rod-shaped member can be fixed by locking, so the nut is tightened Fine adjustment of the direction and the loosening direction can be easily performed.

  (2) Since the tip of the rod-shaped member does not slip as in the prior art, level adjustment can be easily performed in a short time.

  (3) With a simple and low-cost structure such as providing holes and plates on the side of the nut, it is possible to adjust the installation level of the tower, which has a great effect on the construction side.

  Hereinafter, the present invention will be described based on the illustrated embodiments. FIG. 1 is a front view showing an example of a single-column steel pipe column tower for power transmission to which the basic structure of the present invention is applied. FIG. 2 is a plan view and a vertical sectional view showing an example of the basic structure of the present invention. 3 and 4 are a side view and a horizontal sectional view showing an example of an anchor nut for installation adjustment used in the present invention.

  In FIG. 1, a plurality of braces are provided on an upper portion of a tower column 2 of a steel pipe column tower 1 for power transmission, and a ring-shaped base plate 3 is provided at the lowermost portion of the tower column 2. It is fixed by anchor bolts 5.

  As shown in FIG. 2, the basic structure of the present invention has a base plate 3 formed by connecting two upper and lower horizontal ring plates with vertical ribs and the like, and a tip protruding from the basic concrete 4 passes through the base plate 3. A plurality of anchor bolts 5 embedded in the foundation concrete 4, a fixing anchor nut (double nut) 6 attached to the anchor bolt 5 on the upper surface of the base plate 3, and an installation attached to the anchor bolt 5 on the lower surface of the base plate 3 It is comprised from the anchor nut (hexagon nut) 7 for adjustment.

  The anchor bolt 5 is disposed so as to surround the tower column 2 and is assembled on the bottom surface of the foundation by connecting with a plate or the like. A foundation rebar 8 is disposed around the anchor bolt 5, and a foundation concrete 4 in which the anchor bolt 5 and the foundation rebar 8 are embedded is constructed by placing concrete. From the upper surface of the foundation concrete 4, the anchor bolts 5 and the ends of the foundation rebar 8 protrude with a predetermined length, and the tower column 2 is built so that the ends of the anchor bolts 5 penetrate the base plate 3.

  An anchor nut 7 for installation adjustment is disposed on the lower surface of the base plate 3, and the installation level of the base plate 3 is adjusted by adjusting the vertical position by rotating the anchor nut 7. After this level adjustment, the base plate 3 is fixed by the anchor nuts 6 for fixing, the gap between the base plate 3 and the foundation concrete 4 is filled with grout material, and the footing that covers the anchor bolts 5 and the ends of the foundation reinforcing bars 8 is covered. Concrete 9 is cast.

  In such a basic structure, in the present invention, as shown in FIGS. 3 and 4, the end of a bar-shaped member such as a steel bar for rotating the nut is provided on the side surface of the anchor nut 7 for adjusting the installation made of a hexagonal nut. Locking means 10 that can be locked is provided, the tip of the bar-shaped member is fixed to the locking means 10 by locking, and the anchor nut 7 is rotated by hitting the bar-shaped member with a hammer or the like.

  The embodiment of FIG. 3 is a case of a special nut using the locking hole 11 in the locking means 10. A non-through hole that does not reach the internal female screw hole or a through hole that penetrates to the female screw hole is formed on each of the six surfaces of the commercially available hex nut to form the locking hole 11.

  The embodiment of FIG. 4 is a case where a ring-shaped plate 12 provided with protrusions and recesses is used as the locking means 10. The ring-shaped plate 12 is a ring-shaped plate that protrudes outward from the side surface of the nut. The inner hole shape is hexagonal so that it can be attached to the side surface of a commercially available hex nut, and the side surface of the hex nut is welded or the like. Install.

  The outer shape of the ring-shaped plate 12 on which the protrusions are provided is preferably hexagonal so as not to take much width, and a plurality of locking protrusions 13 projecting outward on the outer periphery are provided at intervals in the nut rotation direction. The locking means 10 is arranged. The locking protrusion 13 may be arranged at the center position of each side of the hexagon, or may be arranged at each corner of the hexagon.

  The outer shape of the ring-shaped plate 12 provided with the recesses is preferably circular so that the recesses can be formed, and a plurality of locking recesses 14 recessed inwardly on the outer periphery are arranged at intervals in the nut rotation direction, The locking means 10 is used. Also in this case, the locking recess 14 may be arranged at the center position of each side of the hex nut, or may be arranged at the position of each corner of the hex nut.

  In either case, the protruding length of the ring-shaped plate 12 is about 20 mm so that it does not hit the foundation rebar 8 on the outer periphery.

  Further, a composite type in which the special nut using the locking hole 11 in FIG. 3 and the ring-shaped plate 12 in FIG. 4 are combined may be used. In addition, not only the example of illustration but various latching means 10 can be used.

  In the configuration as described above, as shown in FIG. 2, a rod-shaped member is inserted from between the basic reinforcing bars 8 into the side surface of the anchor nut 7 for installation adjustment under the base plate, and the tip of the rod-shaped member is engaged with the side surface of the nut. The base plate 3 is installed by rotating the nut 7 by inserting or abutting it into the locking projection 13 or the locking recess 14 of the retaining hole 11 or the ring-shaped plate 12 by insertion or contact and rotating the nut 7 with a hammer or the like. Adjust the level. Since the tip of the rod-like member is fixed to the side surface of the nut, fine adjustment in the direction in which the nut 7 is tightened or loosened can be easily performed. In addition, since the tip of the rod-shaped member does not slip as in the prior art, level adjustment can be easily performed in a short time.

It is a front view which shows the example of the steel pipe pillar tower for power transmission of the single pillar type with which the basic structure of this invention is applied. It is an example of the basic structure of this invention, (a) is a top view, (b) is a vertical sectional view, (c) is a partial enlarged vertical sectional view. It is the side view and horizontal sectional view which show the example of the locking hole type of the anchor nut for installation adjustment used by this invention. It is a horizontal sectional view which shows the example of the ring-shaped plate type of the anchor nut for installation adjustment used by this invention. It is the conventional basic structure, (a) is a top view, (b) is a vertical sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Steel pipe pillar tower for power transmission 2 ... Tower pillar 3 ... Base plate 4 ... Foundation concrete 5 ... Anchor bolt 6 ... Anchor nut for fixation 7 ... Anchor nut for installation adjustment 8 ... Foundation reinforcement 9 ... Footing concrete 10 ... Locking means DESCRIPTION OF SYMBOLS 11 ... Locking hole 12 ... Ring-shaped plate 13 ... Locking protrusion 14 ... Locking recessed part

Claims (3)

  It is a foundation structure for fixing the lowermost part of the tower column of the steel pipe pillar for power transmission to the foundation concrete, so that the base plate provided at the lowermost part of the tower pillar and the tip protruding from the foundation concrete penetrate the base plate A plurality of anchor bolts embedded in the foundation concrete, an anchor nut for fixing attached to the anchor bolt on the upper surface of the base plate, and an anchor nut for installation adjustment attached to the anchor bolt on the lower surface of the base plate; A base structure for a steel pipe pillar tower for power transmission, characterized in that a locking means capable of locking a tip of a rod-shaped member for rotating the nut is provided on a side surface of an anchor nut for installation adjustment.   2. The foundation structure according to claim 1, wherein the locking means is a plurality of locking holes formed on the side surface of the nut at intervals in the nut rotation direction. 3. The basic structure according to claim 1, wherein a plurality of locking means are formed on an outer periphery of a ring-shaped plate provided on the nut so as to surround a side surface of the nut at intervals in the nut rotation direction. A basic structure of a steel pipe pillar tower for power transmission, characterized in that it is a locking protrusion or a locking recess.

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