JP2009144382A - Support erecting concrete block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support erecting concrete block which is for use in setting supports of a road sign, a curved mirror, a guard fence, etc., and achieves energy saving at the time of construction, shortening of a construction period, and reduction of construction costs. <P>SOLUTION: The concrete block 100 is driven and embedded in a hole bored in the ground in order to set the supports of the road sign, the curved mirror, the guard fence, etc. The concrete block has: a block body 10 formed of precast concrete; at least two or more anchor bolts 30 each protruded from an upper surface of the block body 10 to be inserted into a base plate 20 arranged at a lower edge of the support as a different member; a top plate 60 allowing insertion of the anchor bolts 30 therein, and supporting the support; a tilt adjusting protrusion 40 arranged at a location corresponding to a substantial center of the base plates 20 and having a protruded dimension lower than that of the anchor bolts 30; and a plate frame 50 arranged at least on an upper edge of the block body 10, and enclosing the anchor bolts 30 and the tilt adjusting protrusion 40. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention fixes the column even when the block main body is inclined and fixed in the ground when installing a column such as a road sign, a curve mirror, a guard fence or a street light installed mainly on the side of the road. The present invention relates to a precast type concrete block whose surface to be adjusted can be adjusted horizontally.

  As for a technique for installing a “post” such as a road sign on the ground, the invention described in Patent Document 1 has been conventionally proposed. In the invention described in Patent Document 1, a column fixing hole for inserting a column is formed on the upper surface of the block main body. After the block main body is buried in the ground, the column is inserted into the fixing hole. The column is erected by insertion. According to such an invention, since the base block is made of precast concrete, it can be said that this is an extremely effective technique in that a curing period at the site is not required and the support can be stably installed in a short construction period.

  However, the above-mentioned support columns need to stand upright with respect to the ground. In this regard, when the support column is fixed in the support column fixing hole according to the invention described in Patent Document 1, the angle is measured from at least two directions to determine the vertical, and then the support column and the support column are promptly used. It is necessary to pour sand or mortar into the gap with the fixing hole to maintain the vertical state of the column. In addition, the situation is the same not only on a flat place but also on a steep slope where it is necessary to stand upright vertically. In such a construction environment, a highly skilled technique is required, which causes a problem of affecting construction costs.

Japanese Utility Model Publication No. 7-35541 (FIGS. 1 and 3) Japanese Patent No. 3497155 (FIG. 3)

  The present invention has been devised in view of the above-mentioned problems, and can save labor during construction when installing pillars such as road signs, curve mirrors, protective fences, street lights, etc. In addition, the construction cost can be reduced, and the pillar can be easily installed vertically even when the concrete block for standing pillar is installed tilted after the concrete block for standing pillar is installed. Moreover, it is an object of the present invention to provide a concrete block for standing upright that can finely adjust the verticality of the support even after the support is installed at low cost.

  In order to solve the problems as described above, the measures taken by the present invention are as follows.

A concrete block 100 for standing pillars according to the present invention is a concrete block 100 for standing pillars used by being buried in the ground in order to install the pillars 30 such as road signs, curve mirrors, guard fences, street lights, etc. A block main body 10 made of precast concrete; at least two or more anchor bolts 30 protruding from the top surface of the block main body 10 and inserted into a top plate 20 provided at the lower end of the support; An inclination adjustment convex part 40 having a projection dimension lower than that of the anchor bolt at a position corresponding to the center, and a plate frame provided at least at the upper end of the block body 10 and surrounding the anchor bolt 30 and the inclination adjustment convex part 40 50.

Next, the invention according to claim 2 is the concrete block 100 for standing upright according to claim 1, in which the block main body 10 is embedded in a circular hole drilled in the ground using an auger screw. The cylindrical hole is smaller in diameter than the inner diameter of the circular hole.

  Next, the invention according to claim 3 is the dome in which the inclination adjusting convex part 40 is integrally formed with the block main body 10 by the precast concrete in the concrete block 100 for standing columns according to claim 1 or claim 2. It is characterized by comprising.

  The invention according to claim 4 is the concrete block for standing pillars according to claim 1 or claim 2, wherein the inclination adjusting convex part 40 is made of a metal bar protruding from the upper surface of the block body 10. A concrete block for standing upright.

According to a fifth aspect of the present invention, in the concrete block for standing pillars according to the first or second aspect, the inclination adjusting convex portion 40 is held by the anchor bolt 30 and formed on the upper surface of the block main body. It consists of a dome formed on a metal base plate 20.

  The effects obtained by adopting the above means are as follows.

  First, the concrete block 100 for standing columns according to the first aspect of the present invention is used by being entered and embedded in a hole drilled in the ground using an excavator or the like. That is, when embedding the block 100, if the cross section of the block 100 is polygonal, the longest diagonal line is dug, and if it is circular, the minimum necessary soil is dug with a screw width slightly larger than the diameter. Good. Therefore, when burying the block 100, it is not necessary to dig up the ground greatly, so that the block 100 can be easily and quickly installed, which contributes to shortening the construction period and lowering the construction cost.

  Moreover, the concrete block 100 for standing upright of the invention according to the present invention is configured so that the angle of the top plate 60 provided on the column is inclined according to the inclination of the concrete block 100 for standing upright when the foundation is installed. It can be freely adjusted on the portion 40. Therefore, the top plate 60 as a table for supporting the support column can always be adjusted horizontally, and as a result, the support column can be always set up vertically. Further, even after the support is erected, the verticality of the support can be finely adjusted by the nut fixing the top plate 60. Therefore, since the concrete block 100 for standing upright can be installed in the ground with a slight inclination, the work of maintaining the block main body, which has been the most difficult and complicated in the past, in the vertical direction is simplified or omitted. be able to.

  Further, the periphery of the upper surface of the block main body is surrounded by a plate frame 50. By adopting such a configuration, raw concrete can be placed in the plate frame 50 and at least a part of the top plate 60 and the anchor bolt can be fixed with concrete. In addition to the fact that the plate frame 50 is provided relatively high and the top plate 60, the anchor bolts 30 and all the support columns provided thereon are also cast with ready-mixed concrete, the support columns can be more securely fixed. Since the anchor bolt 30, the top plate 60, and the base plate 20 can be embedded in the concrete by placing concrete, it is possible to prevent corrosion even when these are made of metal parts. Become.

  Further, the block 100 of the invention according to claim 2 has a block main body 10 having a columnar shape having a diameter smaller than the inner diameter of a circular hole drilled in the ground using the auger screw 200. Can smoothly enter the circular hole. In addition, when the block 100 is buried, it is not necessary to dig up the ground greatly, so that the ground (ground) does not become relatively soft, and the buried block 100 receives sufficient earth pressure. Can do. Further, since it is not necessary to correct a slight inclination generated when the cylindrical block 100 is inserted into the circular hole drilled in the ground using the auger screw 200, the weight of the block 100 is adjusted within the circular hole. It can be attached in a state where it is placed on the peripheral surface.

  Further, the block 100 of the invention according to claim 3 is formed in a dome shape in which the inclination adjustment convex portion 40 is protruded from the block main body 10, so that the inclination adjustment convex portion 40 is provided on the base plate 20. The inclination adjustment convex part 40 can be formed easily and at low cost. By adopting such a configuration, the area in contact with the inclination adjustment convex portion 40 can be kept constant regardless of the inclination of the top plate 20.

  Furthermore, the block 100 of the invention which concerns on Claim 4 can form the protrusion part which can fully endure the weight by a support | pillar by making it the metal rod protruded from the block main body upper surface as the inclination adjustment convex part 40. FIG. it can. Moreover, if the bolt etc. which are mentioned later are used as a metal stick | rod, the protrusion amount of the inclination adjustment convex part 40 can be easily adjusted according to an installation place and the support | pillar to install.

  Furthermore, the block 100 of the invention which concerns on Claim 5 forms the metal base plate 20 formed in the upper surface of the block main body 10 directly as the inclination adjustment convex part 40 in the shape of a dome. By adopting such a configuration, it is possible to sufficiently ensure the strength of the inclination adjustment convex portion 40 itself, and to maintain a constant range in contact with the inclination of the top plate, so that the top plate is inclined relatively large. Even then, the support can be supported stably.

  The best mode for carrying out “the concrete block 100 for standing upright” of the present invention will be described.

  The concrete block 100 for standing pillars according to the present invention is a concrete block 100 for installing the pillars 30 such as road signs, curve mirrors, protective fences, street lamps and the like. The shape of the main body of the block 100 is not limited, but is preferably a prismatic shape, more preferably a cylindrical shape. When configured in a columnar shape, the diameter may be set slightly smaller than the diameter of the circular hole formed by the auger screw 200 with respect to the ground. By adopting such a configuration, the block 100 can smoothly enter the circular hole. Furthermore, it is preferable to have a diameter dimension that allows close contact with the inner peripheral surface of the circular hole. By adopting such a configuration, it is possible to receive a sufficient earth pressure by being in close contact with the ground (inner circumferential surface of the circular hole), and it is possible to stably install the block 100. In addition, the amount of sand and mortar to be filled to fill the gap can be reduced by closely contacting the outer peripheral surface of the block 100 and the inner peripheral surface of the circular hole and reducing the gap. It is also possible to shorten the work time required for.

  The block main body 10 is provided with at least two, preferably four anchor bolts 30, which are provided so as to protrude from the upper surface thereof and are inserted into a top plate 60 of a column as another member.

  The inclination adjustment convex portion 40 is formed so as to protrude from the upper surface at the approximate center of the block body 10 and is formed so as to protrude below the anchor bolt. The configuration is not limited as long as such a configuration is satisfied. For example, the bolt can be formed by fitting a bolt into a bolt hole formed substantially at the center of the base plate 20. By adopting such a configuration, it is possible to adjust the protrusion amount of the inclination adjustment convex portion 40 only by rotating the bolt. Further, when the block body is manufactured, the center of the upper surface of the block body is formed so as to protrude, and the base plate 20 having a large hole formed in the center is placed on the upper surface, thereby adjusting the inclination from the hole. The convex part may protrude. By adopting such a configuration, it is possible to produce various types of projecting portions simply by changing the projecting shape of the mold for producing the block body. Alternatively, the base plate 20 may be made of metal, the center of the base plate 20 itself may be curved, and the inclination adjustment convex portion may protrude. By adopting such a configuration, the surface of the inclination adjustment convex portion 40 can be covered with the base plate 20, a stronger surface of the inclination adjustment convex portion 40 can be formed, and even a heavy column can be sufficiently supported. Become. In addition, by forming the inclination adjustment convex portion 40 in a dome shape, it is possible to have a substantially similar contact area regardless of the direction in which the later-described top plate 60 is inclined. The top plate 60 can be stably fixed regardless of the inclination degree. In addition, when the tip of the dome is crushed intentionally, the crushed portion becomes substantially flat, the contact area can be increased, and the top plate 60 can be supported more stably.

The top plate 60 is fixed to the column. The method for fixing the top plate and the column is not limited, but preferably welding is used. A hole larger than the anchor bolt 30 is formed in the top plate 60 at a position that matches the anchor bolt 30, and the anchor bolt 30 is inserted into the hole and disposed on the inclination adjustment convex portion 40. Then, by tightening the top plate 60 with a nut, the top plate 60 is pressed and fixed to the inclination adjustment convex portion 40. At this time, by adjusting the tightening degree of each nut, the inclination of the top plate 60 can be adjusted to be always horizontal.

Furthermore, the concrete block 100 for standing columns according to the present invention includes a plate frame 50 that is provided at least at the upper end portion of the block body 10 and surrounds the anchor bolt 30 and the inclination adjustment convex portion 40. The material of the plate frame 50 is not limited, but it is preferable to use a material that is difficult to corrode in order to prevent corrosion. For example, a galvanized iron plate. Further, the height of the plate frame 50 is not limited. If it is provided relatively low so that ready-mixed concrete can be placed only on the lower side of the top plate 60, the bottom surface of the top plate 60 is occupied by concrete, so that the top plate 60 can be effectively prevented from tilting, Since the nut is not embedded in the concrete, the column can be replaced even after the concrete block for column support is installed. On the other hand, if the plate frame 50 is provided higher and the ready-mixed concrete including the support is placed, not only the support can be fixed more stably, but also the anchor bolt 30, the inclination adjusting projection 40 and the base plate 20 are made of concrete. It can be confined inside and can be effectively protected from corrosion such as rust.

  The block 100 according to the present invention does not matter whether the concrete is cast using a formwork at the construction site or when the precast product is carried into the construction site. Further, the size of the block main body 10 is not limited, and the ratio of the vertical, horizontal, and height is not limited. Moreover, when forming in a cylindrical shape, it should just be a dimension and shape which are smaller than the internal diameter of the circular hole drilled in the ground, and can receive sufficient earth pressure. That is, it should be arbitrarily changed according to the type of auger screw 200 used for drilling the circular hole.

  In addition, when the ready-mixed concrete is finally placed in the plate frame, the upper surface of the cast concrete may be provided on a horizontal surface, but the inclined surface is formed so that the vicinity of the column is the highest and the periphery thereof is lowered. It is good to provide. If such an inclined surface is used, even when it rains, rain water that has fallen on the upper surface of the support pillar and the cast concrete can be flowed to the surroundings, and the support pillar can be protected from corrosion due to rust and the like.

  Hereinafter, the optimal Example of the concrete block 100 for support | pillar standing is described along a figure. FIG. 1 is a cross-sectional view of a concrete block 100 for standing pillars according to the first embodiment, FIG. 2 is a perspective view of the concrete block 100 for standing pillars according to the first embodiment, and FIG. FIG. 3 is a plan view of the concrete block 100 for use (the nut and the inclination adjustment convex part 40 are omitted for convenience of explanation). As shown in FIG. 2 or 3, the block body 10 according to the present embodiment has a columnar shape.

  An anchor bolt 30 is embedded in the block body 10 so as to protrude from the upper surface. In the first embodiment, the lower end of the anchor bolt 30 is bent and the lower end of the anchor bolt 30 is fixed by the fixing plate 70 so that the anchor bolt 30 is not easily detached from the block main body. It is buried.

In the approximate center of the block main body 10, an inclination adjustment convex portion 40 formed by projecting the block main body 10 into a dome shape is provided. A top plate 60 is installed on the upper surface of the inclination adjustment convex portion 40 through the anchor bolt 30. The top plate 60 is provided with holes at positions that match the positions of the anchor bolts 30. This hole is formed with a hole slightly larger than the anchor bolt 30 so that the top plate can be tilted appropriately, and can be tilted with the tilt adjustment convex portion 40 as a fulcrum. Therefore, the top plate 60 can fix the top plate 60 with an arbitrary inclination according to the tightening degree of the nut. Further, a plate frame 60 is provided around the upper edge of the block body 10.

  FIG. 4 is a view showing a state in which a circular hole is formed in the ground using the auger screw 200. FIG. 5 shows a state where the block 100 is to be inserted into a circular hole drilled in the ground, and FIG. 6 shows a state where the insertion of the block 100 into the circular hole drilled in the ground is completed. FIG. FIG. 7 is a diagram schematically showing the state of the block 100 in the ground after insertion into the circular hole. Although FIG. 7 illustrates a state in which the side surface of the block is not in contact with the side surface of the circular hole, they may be in contact with each other.

  When embedding the block body 10 in a circular hole, even if great care is taken to install it vertically, it is actually very difficult to embed it completely vertically, as shown in FIG. It is installed at an inclination. Conventionally, various operations are performed to bring out the vertical from this state. However, in the case of the first embodiment, the periphery of the block main body 10 installed in this state is backfilled with earth and sand. The main body 10 is fixed in the excavation part. Even when the block body 10 is fixed in an inclined manner as described above, the top plate 60 can be installed horizontally by adjusting the tightening degree of the nut to adjust the inclination of the top plate 60. Therefore, the column can be installed horizontally regardless of the inclination of the block body 10. Of course, when the inclination of the block body 10 is large, the block body 10 is not prevented from being corrected as vertically as possible. After the top plate 60 is leveled in this way, the ready-mixed concrete is placed in the plate frame 50, and the anchor bolt 30, the base plate 20, the nut, the top plate 60, and the support post fixed thereto are buried and fixed with concrete. .

  FIG. 8 shows a cross-sectional view of the concrete block 100 for standing columns according to the second embodiment. The difference between the second embodiment and the first embodiment is that the plate frame 50 is provided lower than the first embodiment. Other configurations are the same as those in the first embodiment. The reason why the plate frame 50 is provided in this manner is that it is optimal for placing the ready-mixed concrete below the top plate 60 when the ready-mixed concrete is finally placed in the plate frame 50. . Since the bottom surface of the top plate 60 is occupied by concrete, the top plate 60 is effectively prevented from being tilted. On the other hand, the nut is not embedded in the concrete. It can be exchanged.

  FIG. 8 is a sectional view of a concrete block 100 for standing columns according to the third embodiment. The concrete block 100 for standing columns according to the second embodiment is formed by forming the base plate 20 itself arranged on the uppermost surface of the block main body 10 in a dome shape and forming the inclination adjustment convex portion 40. The base plate 20 is preferably made of metal. By adopting such a configuration, it becomes possible to withstand a greater load, and it is possible to support a heavier column. Further, after the top plate 60 is leveled, the dome-shaped tip can be slightly crushed by tightening the nut with a strong force. By doing in this way, the contact area of the top plate 60 and the front-end | tip of a dome increases, and the top plate 60 can be stabilized further. In addition, since it is the same as that of Example 1 about the other structure and installation method of the concrete block 100 for standing pillars, the description is abbreviate | omitted.

  FIG. 10 is a cross-sectional view of a standing concrete block 100 according to the fourth embodiment. The concrete block 100 for standing columns according to the fourth embodiment is provided by providing a substantially screwing hole at the approximate center of the base plate 20 arranged on the uppermost surface of the block body 10 and screwing a bolt into the screwing hole from the lower surface. The tip end portion of the bolt protrudes from the upper surface side to form the inclination adjustment convex portion 40. Thereby, when producing the block main body 10, only the height of the protrusion at the tip can be adjusted by the bolt, and the height of the inclined protrusion can be adjusted. Since other configurations and installation methods are the same as those in the first embodiment, the description thereof is omitted.

  In addition, although all the said Example demonstrated using the cylindrical block main body, it is not limited to this, A square pole may be sufficient like the top view shown in FIG. It may be a polygonal column.

  The concrete block 100 according to the present invention can be used when embeding in the ground because the pillars 30 such as road signs, curve mirrors, guard fences, street lamps and the like are installed.

It is sectional drawing of the concrete block 100 for pillar support | erection which concerns on Example 1. FIG. 1 is a perspective view of a concrete block 100 for standing columns according to Embodiment 1. FIG. It is a top view of the concrete block 100 for support | pillar standing which concerns on Example 1. FIG. It is the figure which showed the state which drills a circular hole in the ground using the auger screw. It is the figure which showed the state which tries to insert the block 100 in the circular hole drilled in the ground. It is the figure which showed the state which insertion of the block 100 completed in the circular hole drilled in the ground. It is a figure which shows the state which inserted the block 100 in the hole drilled in the ground. It is sectional drawing of the concrete block 100 for column support | erection which concerns on Example 2. FIG. It is sectional drawing of the concrete block 100 for pillar support | erection which concerns on Example 3. FIG. It is sectional drawing of the concrete block 100 for column support | erection which concerns on Example 4. FIG. It is a top view of the concrete block 100 for support | pillar standing in another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Block main body 20 Base plate 30 Anchor bolt 40 Inclination adjustment convex part 50 Plate frame 60 Top plate 70 Fixing plate 100 Concrete block for standing column

Claims (5)

It is a concrete block for standing pillars that is buried in the ground and used to install pillars such as road signs, curved mirrors, protective fences, street lights, etc.
A block body made of precast concrete;
Projecting from the upper surface of the block body, and inserted through a top plate provided with a lower end of the support, at least two or more anchor bolts;
An inclination adjustment convex portion having a projection dimension lower than that of the anchor bolt at a position corresponding to the approximate center of the block body,
A concrete block for standing columns, comprising: a plate frame provided at least at an upper end portion of the block main body and surrounding at least an anchor bolt and an inclination adjusting convex portion. In the concrete block for standing pillars according to claim 1,
A block standing concrete block characterized in that the block main body has a columnar shape smaller in diameter than the inner diameter of the circular hole so as to be embedded in a circular hole drilled in the ground using an auger screw. In the concrete block for standing pillars according to claim 1 or claim 2,
The inclination adjustment convex part consists of the dome integrally formed with the block main body by the precast concrete, The concrete block for standing pillars characterized by the above-mentioned. In the concrete block for standing pillars according to claim 1 or claim 2,
The inclination adjustment convex part consists of a metal bar protruded from the upper surface of the block main body. In the concrete block for standing pillars according to claim 1 or claim 2,
The inclination adjustment convex part consists of the dome formed in the metal baseplate formed in the upper surface of a block main body, The concrete block for support | pillar standing characterized by the above-mentioned.

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