JP5719335B2 - Simple foundation and construction method of this simple foundation - Google Patents

Description

  The present invention relates to a simple foundation constructed on the ground in order to support a signboard, a frame, a structure, or the like, and a method for constructing the simple foundation.

  In order to support the structure and the like, various simple foundations have been proposed so far that are installed on the ground or in the ground. For example, the simple foundation disclosed in Patent Document 1 includes a vertical cylindrical portion that is inserted and supported at the lower end side of a columnar member that supports the structure and the like, and a plurality of base ends that are welded to the outer periphery of the vertical cylindrical portion. A connecting plate portion projecting radially from the vertical cylindrical portion, and a plurality of inclined cylindrical portions welded to the tips of these connecting plate portions and inclined downwardly from the vertical cylindrical portion. It is configured. Then, the method for constructing the simple foundation disclosed in Patent Document 1 will be described. First, the driving pins are respectively inserted from above into the plurality of inclined cylindrical portions and pressed into the ground (piercing). This simple foundation is fixed with a driving pin. Next, the lower end side of the columnar member is inserted into the vertical cylindrical portion. In addition, the simple foundation disclosed in Patent Document 2 includes a vertically formed vertical cylindrical portion, a plurality of upper end side insertion holes formed in an upper end side middle portion of the vertical cylindrical portion, and a lower end side of the vertical cylindrical portion. A plurality of lower end side insertion holes formed in the middle part and a base end welded to the outer peripheral surface of the vertical cylindrical part with the inside communicating with each upper end side insertion hole, between the axis of the vertical cylindrical part A plurality of upper insertion pipes welded in an upwardly inclined state so as to form an acute angle, and a base end welded to the outer peripheral surface of the vertical cylindrical portion with the inside communicating with each lower end side insertion hole. And a plurality of lower insertion pipes welded in a state of being inclined downward so as to form an acute angle with the axis of the vertical cylindrical portion. And when the method of constructing the simple foundation disclosed in Patent Document 2 is described, first, the upper end side is inserted into the specific upper insertion pipe and the specific lower insertion pipe, respectively, and the lower end side is underground. A plurality of driving pins are fixed in the manner of press-fitting (piercing). In this state, the upper end side midway portions of the plurality of driving pins intersect with each other in the vertical cylindrical portion. Next, the mortar or concrete or the like is filled in the vertical cylindrical portion, and a fixing member for fixing the lower end of the columnar member is disposed on the mortar or concrete or the like.

  Therefore, according to the simple foundation disclosed in Patent Document 1 and Patent Document 2 described above, the construction can be performed in a state where the structure or the like can be supported by a simple method.

JP 2011-241590 A US Pat. No. 5,039,256

  However, neither the simple foundation disclosed in Patent Document 1 described above nor the simple foundation disclosed in Patent Document 2 can be adjusted and installed so that the height (level) of the simple foundation is constant. In other words, simple foundations are constructed to support signboards, frames, structures, etc., and it is extremely rare that they are constructed in a single way, so that multiple simple foundations are constructed at the same level. Even though it is necessary to stand, it is extremely difficult to match these levels with the simple foundations disclosed in Patent Document 1 and Patent Document 2 described above. Therefore, in each simple foundation disclosed in the above-mentioned patent documents 1 and 2, when a plurality of columnar members supporting structures and the like are formed to the same length, such simple foundations are configured. After each columnar member is supported by each of the vertical cylindrical portions, an operation of adjusting the upper end position (level) of each columnar member by cutting the upper end or the lower end of each columnar member must be accompanied. As a result, it shortens the construction period.

  Therefore, the present invention has been proposed in order to solve the problems of the conventional simple foundation described above, and not only can be easily constructed, but each height ( Level) can be adjusted easily and with high accuracy, and it is possible to eliminate the trouble of cutting the columnar member after construction, and thus a new simple foundation that can greatly shorten the construction period and this simple The purpose is to provide a foundation construction method.

  The present invention is a simplified basis proposed to solve the above-mentioned problems, and the first invention (the invention according to claim 1) includes a bottom plate portion and a plurality of erected upwards from the bottom plate portion. A side plate portion, a top plate portion fixed to the upper ends of the plurality of side plate portions and parallel to the bottom plate portion and supporting a supported member such as a structure, and an acute angle with respect to the vertical direction are fixed to the side plate portion. And a plurality of inclined guide tubes through which inclined pins driven at least at the lower end side into the ground are inserted, and the bottom plate portion is vertically embedded with the lower end side vertically embedded in the ground An insertion hole through which the pin is inserted is formed, and between the bottom plate portion and the top plate portion, it is placed on the upper end of the vertical pin inserted from the insertion hole and can be expanded and contracted in the vertical direction. Device placement space where a height adjustment device can be placed The bottom plate portion is configured to float above the ground as the upper end of the height adjustment device comes into contact with the top plate portion by the extension operation of the height adjustment device. To do.

  In the simple foundation according to the first aspect of the present invention, the bottom plate portion is formed with an insertion hole through which a vertical pin whose lower end side is vertically embedded in the ground is inserted, and from the bottom plate portion to the top plate portion. In the meantime, a device arrangement space is formed. This device arrangement space is placed on the upper end of a vertical pin inserted through an insertion hole formed in the bottom plate portion, and is a height adjusting device that can be expanded and contracted in the vertical direction (vertical direction) by an expansion / contraction operation. Is a space where can be placed. In addition, this height adjustment apparatus can use the winch etc. which expand-contract to an up-down direction by rotating operation from a side, for example. When such a height adjusting device is placed on the upper end of the vertical pin and then extended so that the upper end of the height adjusting device rises, the upper end of the height adjusting device eventually becomes the lower surface of the top plate portion. When the extension operation is performed so as to come into contact with and further ascend, the entire simple foundation rises. Then, when the operation of the height adjusting device is finished so as to reach a predetermined height, an inclined pin is inserted into each of the inclined guide tubes from the upper end side of the inclined guide tube, and the tip of the inclined pin is Press into the ground. By press-fitting (driving) such a plurality of inclined pins into the ground, this simple foundation is fixed and its height is maintained.

  That is, if the simple foundation fixing method or construction method according to the first invention is described in the order of construction steps, the following steps are performed. First, the vertical pins are driven into predetermined land at predetermined intervals. Next, each vertical pin is inserted through an insertion hole formed in the bottom plate portion constituting this simple foundation. At this point, the bottom plate portion of most simple foundations is placed on the ground, but when the vertical pin is driven into a place that is partially lower than other places, the vertical plate The upper end of the pin is in contact with the lower surface of the top plate portion, and the bottom plate portion is lifted from the ground. That is, when the length of each vertical pin standing and exposed from the ground is shorter than the length from the upper surface of the bottom plate portion to the lower surface of the top plate portion, the bottom plate portion is placed on the ground. In the case of being long, the bottom plate portion is lifted from the ground. And if a simple foundation is arrange | positioned at each of all the vertical pins in this way, then a height adjustment apparatus will be mounted in the upper end of each vertical pin. At this time, the sum of the length of each vertical pin standing and exposed from the ground and the total length (length in the vertical direction) in the state where the height adjusting device is most contracted is the height from the top surface of the bottom plate portion. If the length is shorter than the length of the bottom of the plate, the height adjustment device can be easily placed on the top of the vertical pin, but the length and height adjustment of each vertical pin that stands up and is exposed from the ground. When the total length (length in the vertical direction) of the apparatus in the most contracted state is longer than the length from the upper surface of the bottom plate portion to the lower surface of the top plate portion, The simple foundation is lifted by fingers and placed on the upper end of the vertical pin. In this case, the upper end of the height adjusting device contacts the lower surface of the top plate portion. When these steps are completed, the height adjusting device is then extended so that the upper ends of the respective simple foundations are adjusted to a certain height. When the heights of all the simple foundations become constant by the operation of the height adjusting device, the inclined pins are inserted from above into the respective inclined guide tubes constituting the respective simple foundations. By such an operation of driving the inclined pin, each simple foundation is fixed and its position is determined and maintained. When these work steps are completed, the supported member is then supported on the top plate by fixing the supported member. In addition, each said height adjustment apparatus removes from each simple foundation by carrying out reduction operation etc.

  As described above, according to the simple foundation according to the first aspect of the invention, not only can the construction be performed easily, but also the height (level) can be adjusted easily and accurately when a plurality of constructions are performed. As in the conventional simple foundation, it is possible to save the trouble of cutting the columnar member after construction, and the construction period can be greatly shortened. Furthermore, according to the simple foundation which concerns on this invention, even if it is a case where the ground which installs a structure etc. is not a horizontal state, it becomes possible to construct easily.

  According to a second invention (invention according to claim 2), in the first invention, the plurality of side plate portions include first and second side plate portions facing in parallel to each other, and the inclined guide tube. The first inclined guide tube fixed to the middle part of the first side plate part, the second inclined guide tube fixed to the middle part of the second side plate part, and the first side plate part A third inclined guide tube fixed to both one side and one side of the second side plate portion, and both the other side of the first side plate portion and the other side of the second side plate portion. It is characterized in that there are four inclined guide tubes in total with the fixed fourth inclined guide tube.

  In the simple foundation according to the second aspect of the present invention, the tilt pins can be inserted into the first to fourth tilt guide tubes and the first to fourth tilt pins can be driven into the ground. Since it is fixed by two inclined pins, a more stable fixed state can be realized.

  In addition, according to a third invention (invention according to claim 3), in any of the first and second inventions, the side plate portion or the middle portion of the first and second side plate portions is inclined. The notched portions are formed, and the inclined guide tubes or the first and second inclined guide tubes are respectively fixed to these notched portions.

  In the third aspect of the invention, inclined notch portions are formed in the middle portions of the respective side plate portions or the first and second side plate portions, and the inclined guide tube or the second one is formed in these notch portions. Since the first and second inclined guide tubes are respectively fixed, the inclined guide tube or the first and second inclined guide tubes are stabilized with respect to the side plate portion or the first and second side plate portions. In the operation of driving each inclined pin, there is a risk that the inclined guide tube or the first and second inclined guide tubes fall off from the side plate portion or the first and second side plate portions. Can be avoided.

  According to a fourth invention (invention according to claim 4), in any one of the first, second, and third inventions, a contact portion is fixed below the top plate portion, and the height The height adjusting device is configured such that the upper end of the height adjusting device comes into contact with the contact portion instead of the lower surface of the top plate portion by the extension operation of the height adjusting device.

  According to the simple foundation according to the fourth aspect of the present invention, bolts and nuts used when fixing the supported member such as the columnar member or the fixing member fixed and supported on the upper surface of the top plate, or other Even when the fastening members or their accessories are located on the lower surface of the top plate portion, the upper end of the height adjusting device comes into contact with the contact portion without contacting them, so that it is simple. It is possible to avoid the danger that accurate height adjustment cannot be performed for each foundation.

  The abutting portion may be a plate-like member that is in parallel with the top plate portion as long as the upper end of the height adjusting device abuts securely by the extension operation of the height adjusting device. Alternatively, a member formed perpendicular to the top plate portion may be used.

  Moreover, 5th invention (invention of Claim 3) concerns on the construction method of the simple foundation which concerns on any 1st, 2nd, 3rd or 4th invention, Comprising: An upper end is from the ground surface A vertical pin driving step for vertically driving a vertical pin into the ground so as to project upward, and an insertion hole formed in the bottom plate portion constituting the simple foundation, with the vertical pin below the bottom plate portion A vertical pin insertion step through which the height adjustment device is placed on the upper end of the vertical pin, and the height adjustment device is extended to increase the height of the upper end of the simple foundation. A height adjusting step for adjusting to a predetermined height, and the inclined pins are inserted into the respective inclined guide tubes or the first to fourth inclined guide tubes constituting the simple foundation and driven into the ground. Inclined pin driving process and the height adjusting device Serial and height adjuster removing step of removing from the vertical pins and is characterized in that it comprises an.

  In the simple foundation construction method according to the fifth invention, not only can the simple foundation be constructed in the same manner as any simple foundation according to the first, second, third or fourth invention. , Each height (level) can be adjusted easily and with high accuracy, and like the conventional simple foundation, it is possible to save the trouble of cutting the columnar member after construction, and the construction period is greatly increased. It can be shortened.

  According to the construction method of the simple foundation according to the first invention (invention according to claim 1) and the simple foundation according to the fifth invention (invention according to claim 5), the construction can be simply performed. In addition, each height (level) can be adjusted easily and with high accuracy, and it is possible to eliminate the trouble of cutting the columnar member after construction, as in the case of the conventional simple foundation. Can be shortened.

  Moreover, according to the construction method of the simple foundation which concerns on 2nd invention (invention of Claim 2), and the simple foundation which concerns on 5th invention (invention of Claim 5), in the simple foundation, said 1st thru | or Since the inclined pin is inserted into each of the fourth inclined guide tubes and the first to fourth inclined pins are driven into the ground, the fixed state is realized. Can do.

  Moreover, in the construction method of the simple foundation which concerns on 3rd invention (invention of Claim 3), and the simple foundation which concerns on 5th invention (invention of Claim 5), said each side plate part or 1st and 1st In the middle part of the second side plate portion, inclined notches are formed, and the inclined guide tubes or the first and second inclined guide tubes are fixed to these notches, respectively. With respect to the side plate portion or the first and second side plate portions, the inclined guide tube or the first and second inclined guide tubes can be fixed in a stable state. It is possible to avoid a risk that the inclined guide tube or the first and second inclined guide tubes are dropped from the side plate portion or the first and second side plate portions.

  Moreover, according to the construction method of the simple foundation which concerns on 4th invention (invention of Claim 4), and the simple foundation which concerns on 5th invention (invention of Claim 5), it is fixed to the upper surface of a top-plate part. When bolts and nuts used when fixing supported members such as the columnar member or fixing member to be supported, or other fastening members or their accessories are located on the lower surface of the top plate portion Even so, the upper end of the height adjusting device comes into contact with the contact portion without coming into contact therewith, so that it is possible to avoid a risk that accurate height adjustment cannot be performed for each simple foundation.

It is a perspective view which shows the simple foundation which concerns on embodiment of this invention. It is a right view of the simple foundation shown in FIG. It is a perspective view which shows a height adjustment apparatus. It is a front view which shows typically the state which constructed the vertical pin in the ground. It is a front view which shows typically the state which mounted the simple foundation on the ground. It is a front view which shows typically the state which mounted the height adjustment apparatus on the upper end of a vertical pin. It is a front view showing typically the state where the simple foundation floated from the ground by extension operation of the height adjusting device. It is a front view which shows typically the state after piercing the 1st and 2nd inclination pin in the ground, respectively. It is a front view which shows typically the state which removed the height adjustment apparatus from the simple foundation. It is a front view which shows typically the state after mounting | wearing with the pin protection member to the 1st and 2nd inclination pin. It is a disassembled perspective view which shows a pin protection member. It is a front view which shows typically the state which fixed the horizontal member on the simple foundation. It is a right view which shows typically the state which fixed the horizontal member on the simple foundation. It is a front view which shows the simple foundation which concerns on 2nd Embodiment. It is a right view which shows the simple foundation shown in FIG. It is a top view which shows the simple foundation shown in FIG.

  Hereinafter, a simple foundation according to the best mode for carrying out the present invention will be described in detail with reference to the drawings, and then a method for constructing the simple foundation will be described.

  The simple foundation 1 according to this embodiment is made of iron and the surface is coated with a paint or subjected to rust prevention treatment such as plating treatment, and is formed into a plate shape as shown in FIG. The bottom plate portion 2, the first side plate portion 3 standing vertically from one end of the bottom plate portion 2, and the first side plate portion 3 rising vertically from the other end of the bottom plate portion 2. The second side plate portion 4 is made parallel to the bottom plate portion 2 and is formed in parallel with the bottom plate portion 2 and has one end fixed to the upper end of the first side plate portion 3 and the other end thereof And a top plate portion 5 fixed to the upper end of the second side plate portion 4.

  In the simplified base 1 according to the present embodiment, the bottom plate portion 2 is formed in a rectangular shape having a length in the left-right direction, and the center of the bottom plate portion 2 is shown in FIG. 1 or FIG. As shown, a circular insertion hole 2a is formed. In addition, a circular opening (not shown) is formed in the vicinity of the corner portion of the bottom plate portion 2, and a circular shape is formed in the vicinity of the corner portion that is diagonally opposite to the corner portion. The other opening (not shown) is formed. The top plate portion 5 is formed in a square shape and is parallel to the bottom plate portion 2. The top plate portion 5 is provided with bolt insertion holes 5a through which a plurality of bolts for fixing a horizontal member, which will be described later, are inserted. The first side plate portion 3 and the second side plate portion 4 are fixed from the top plate portion 5 to the bottom plate portion 2 by welding. In other words, the lower ends of the bottom plate portion 2 are fixed in a state where the first and second side plate portions 3 and 4 stand vertically. These first side plate parts 3 hang down from the left end of the top plate part 5 with the same width as the length of the left end of the top plate part 5, and from the middle part than the length of the left end of the top plate part 5. It has a long width. Similarly, the first side plate portions 4 are also formed in the same shape, and are suspended from the right end of the top plate portion 5 with the same width as the length of the right end of the top plate portion 5. From the midway part, the width is longer than the length of the right end of the top plate part 5.

  A first cutout portion 3 a that is inclined so as to form an acute angle with respect to the vertical direction is formed in the middle portion on the lower end side of the first side plate portion 3, and the second side plate portion 4 is formed. A second cutout portion 4a that is inclined so as to form an acute angle with respect to the vertical direction and that is inclined in a direction intersecting with the first cutout portion 3a is formed in the lower end side middle portion of the A first inclined guide tube 7 constituting the present invention is welded between the first notches 3a, and a second inclined guide tube 8 is welded between the second notches 4a. Yes. That is, the first inclined guide tube 7 and the second inclined guide tube 8 are arranged in a direction that intersects in a slightly separated state. And the lower end of this 1st inclination guide pipe | tube 7 inclines and is cut | disconnected, it is the upper surface of the said baseplate part 2, and is being fixed so that said one opening may be surrounded. The lower end of the second inclined guide tube 8 is inclined and cut, and is fixed on the upper surface of the bottom plate portion 2 so as to surround the other opening. The first and second inclined guide tubes 7 and 8 are respectively formed to have the same length and shape. Further, the portion of the first side plate portion 3 having a long width is located below the first inclined guide tube 7, and is the second side plate portion 4. The portion having a long width is located below the second inclined guide tube 8.

  And in the simple foundation 1 which concerns on this Embodiment, it is located under the said top-plate part 5, and one end is welded to the inner surface of the upper end side of the said 1st side-plate part 3, and the other single is said 2nd side-plate. A contact plate portion 9 is welded to the inner surface on the upper end side of the portion 4. The contact plate portion 9 is a contact portion constituting the present invention, and is formed in a rectangular shape as shown in FIG. 1 and has a width in a vertical direction with respect to the top plate portion 5. ing. And between the said contact plate part 9 and the said baseplate part 2, it is set as the apparatus arrangement | positioning space 10 in which the height adjustment apparatus 11 (refer FIG. 3) is arrange | positioned so that it may mention later.

  In the present embodiment, the height adjusting device 11 uses a jack. As shown in FIG. 3, a base member 12 placed on the upper end of a vertical pin to be described later, and the base member 12. The first to fourth lower left link members 13... 16 whose one end sides are rotatably connected to each other, and the other end sides of the first to fourth lower left link members 13. The left raising / lowering member 17 connected freely, the 1st thru | or 4th lower right link member 18 ... 21 by which one end side was each rotatably connected with respect to the said base member 12, and said 1st thru | or 1st. 4 and the lower right link member 18... 21 are connected to the right elevating member 22 rotatably connected to the other end side. Further, a central elevating member 23 is disposed above the base member 12. The left elevating member 17 and the central elevating member 23 are connected to the left elevating member 17 so that one end side thereof is freely rotatable and the other end is connected to the left elevating member 17. The first and fourth upper left link members 24... 27 are connected to the central lifting member 23 so as to be rotatable. The right elevating member 22 and the central elevating member 23 have first ends pivotably connected to the right elevating member 22 and the other ends pivotally connected to the central elevating member 23, respectively. Or it is connected by the fourth upper right link members 28... 31. The first to fourth lower left link members 13... 16, the first to fourth lower right link members 18... 21, the upper left link members 24. The four upper right link members 28... 31 are formed to have the same length.

  One nut 33 is welded to the left lifting member 17, and the other nut 34 is welded to the right lifting member 22. The one nut 33 and the other nut 34 are screwed with screws not shown in the drawing. A lifting operation shaft 35 is disposed from the left lifting member 17 to the right lifting member 22. One screw (not shown) that is screwed to the one nut 33 is threaded in the middle portion on the one end side of the lifting operation shaft 35, and the other end portion on the other end side of the lifting operation shaft 35 is on the other side. The other screw (not shown) that is screwed onto the nut 34 is threaded. Therefore, in the height adjusting device 11, when the elevating operation shaft 35 is rotated, for example, in the clockwise direction by a rotation operation handle (not shown), the left elevating member 17 and the right elevating member 22 approach each other. In addition, the first to fourth lower left link members 13 ... 16, the first to fourth lower right link members 18 ... 21, the upper left link members 25 ... 27, and the first to fourth upper right links. The members 28... 31 are rotated, and the central elevating member 23 is raised. On the contrary, when the elevating operation shaft 35 is rotated in the counterclockwise direction by a rotation operation handle (not shown), the left elevating member 17 and the right elevating member 22 are separated from each other and the first to fourth components are separated. Lower left link members 13 ... 16, first through fourth lower right link members 18 ... 21, upper left link members 25 ... 27, and first through fourth upper right link members 28 ... 31. Each pivots and the central elevating member 23 descends. In addition, the height of the height adjusting device 11 in a state where the distance between the base member 12 and the central elevating member 23 constituting the height adjusting device 11 is the closest (reduced state) is at least the simple foundation 1. The upper end of the vertical pin 41 driven into the ground, which will be shorter than the length from the upper surface of the bottom plate portion 2 to the lower end of the contact plate portion 9 and will be described later in the device arrangement space 10. It is said that it can be placed on the height.

  Next, the process of constructing the simple foundation 1 according to the present embodiment on the ground will be described in detail in the order of each process.

  In the method of constructing the simple foundation 1, first, the vertical pin 41 is stabbed (constructed) perpendicularly (perpendicularly) to the ground GL. The vertical pin 41 is exposed from the ground GL for a predetermined length. Further, a plurality of such vertical pins 41 are constructed in the same manner as described above (vertical pin driving step). Then, when the construction of these vertical pins 41 is completed, then, as shown in FIG. 5, the vertical pins 41 are inserted into the insertion holes 2a formed in the bottom plate portion 2, and the simple foundation 1 is grounded. (Installed) (vertical pin insertion process). At this time, in the vertical pin 41 exposed from the ground GL, the exposed length of the vertical pin 41 is longer than the length from the upper surface of the bottom plate portion 2 to the lower end of the contact plate portion 9. In such a case, the upper end of the vertical pin 41 is in contact with the lower end of the contact plate portion 9.

  When the vertical pin insertion process is completed, the height adjusting device 11 is then placed and placed on the upper end of the vertical pin 41 in the device installation space 10 as shown in FIG. (Height adjusting device placement step). In addition, when the exposed length of the vertical pin 41 is longer than the length from the upper surface of the bottom plate part 2 to the lower end of the contact plate part 9, the operator lifts the simple base 1 and moves the height adjusting device. 11 is arranged. When such a height adjusting device placement step is completed, as shown in FIG. 7, the lifting operation shaft 35 constituting the height adjusting device 11 is rotated by a rotation operation handle (not shown). The central elevating member 23 is raised, the upper surface of the central elevating member 23 is brought into contact with the lower end of the abutting plate portion 9, and the entire simple foundation 1 is adjusted to a predetermined height (height adjusting step). . Such work is also performed in the other vertical pipes 41, and all the simple foundations 1 are set to a predetermined height.

  When the height adjusting step is completed, the first and second inclined pins 43 are then placed in the first inclined guide tube 7 and the second inclined guide tube 8 as shown in FIG. 44, and the tip side of each of the first and second inclined pins 43, 44 is driven into the ground by using, for example, a driving device (not shown) connected to a compressor or the like. Process). Before the first and second inclined pins 43 and 44 are driven in this way, the cylindrical body 46 that constitutes the pin protection member 45 (see FIG. 11) is previously attached to the first and second inclined pins 43 and 44. Attach to the upper end of the. As shown in FIG. 11, each of these pin protection members 45 includes a cylindrical body 46 and a cap 47 attached to one end of the cylindrical body 46. The cylindrical body 46 and the cap 47 are both integrally formed of synthetic resin (polyethylene resin), and the cylindrical body 46 has an outer diameter larger than the outer diameters of the first and second inclined pins 43 and 44. The first and second inclined guide tubes 7 and 8 are formed to have a large diameter and a smaller diameter than the inner diameter. The cylindrical body 46 is formed with a linear slit 46a in the axial direction. The cap 47 has an inner diameter close to the outer diameter of the cylindrical body 46 and a cylindrical portion 47a having a larger diameter than the inner diameters of the first and second inclined guide tubes 7 and 8, and the cylindrical portion. It consists of a closing part 47b that closes one end of 47a. Each of the cylindrical bodies 46 is formed with the slit 46a, and both side ends facing the slit 46a are bent so as to be separated from each other, so that the first and second inclined pins 43 and 44 are connected to each other. It can be easily installed. When the inclined pin driving process is completed, the height adjusting device 11 is then reduced and taken out from the device arrangement space 10 as shown in FIG. 9 (height adjusting device removing process).

  Then, when the height adjusting device removing step is completed, caps 47 constituting the pin protection member 45 are respectively provided on the upper end sides of the first and second inclined pins 43 and 44 as shown in FIG. Are mounted on the respective cylindrical bodies 46.

  Then, when the mounting work of the cap 47 constituting the pin protection member 45 is finished, then, as shown in FIGS. 12 and 13, the horizontal member 51 is placed on the top surface of the top plate part 5 constituting the simple foundation 1. To fix. The horizontal member 51 includes a bottom plate portion 53 that is provided with a plurality of bolt insertion holes (not shown) and is supported on the top surface of the top plate portion 5, and a side plate portion that stands upward from one side of the bottom plate portion 53. 52 and a top plate portion 54 that extends in the horizontal direction from the upper end of the side plate portion 52 and has a lower surface facing the upper surface of the bottom plate portion 53. The horizontal member 51 is inserted into the plurality of bolt holes formed in the bottom plate portion 53 through shaft portions (reference numerals are omitted) of the fixing bolts 55 and bolts formed in the top plate portion 5. The nut 56 is screwed and fastened to the shaft portion protruding downward from the top plate portion 5 through the insertion hole 5a. By performing these operations on other simple foundations (not shown), the horizontal member 51 can be fixed in a horizontal state as shown in FIG.

  Thus, according to the simple foundation 1 and the construction method of the simple foundation 1 according to the above-described embodiment, not only can the construction be performed very easily, but also the respective heights (levels) when a plurality of constructions are performed. Can be adjusted easily and with high accuracy, and it is possible to eliminate the trouble of cutting the columnar member after construction as in the conventional simple foundation, and the construction period can be greatly shortened. In particular, in the simple foundation 1 according to this embodiment, the first side plate portion 3 and the second side plate portion 4 are respectively provided with first and second cutout portions 3a, 4a, and the first side plate portion 3 The inclined guide tube 7 is welded to the first cutout portion 3a, and the second inclined guide tube 8 is welded to the cutout portion 4a. When performing the operation of inserting the first inclined pin 43 and piercing it into the ground, or the operation of inserting the second inclined pin 44 into the second inclined guide tube 8 and piercing it into the ground, the first or second It is possible to effectively prevent the risk that the inclined guide tubes 7 and 8 are dropped from the first side plate portion 3 or the second side plate portion 4. Further, in the simple foundation 1 according to this embodiment, the abutting portion 9 is fixed below the top plate portion 5, and the upper end of the height adjusting device 11 is extended by the extension operation of the height adjusting device 11. Since it is configured to abut against the abutting portion 9 instead of the lower surface of the plate portion 5, the horizontal member 51 (supported member constituting the present invention) fixed and supported on the upper surface of the top plate portion 5 is used. ), The upper end of the height adjusting device 11 does not come into contact with them even when the bolt 55 and the nut 56 used for fixing are fixed on the lower surface of the top plate portion 5. Since it abuts against the abutment portion 9, it is possible to avoid a risk that accurate height adjustment cannot be performed for each simple foundation 1.

  In particular, in the simple foundation 1 according to the above-described embodiment, the first and second inclined guide tubes 7 and 8 are each in the middle of the first side plate portion 3 or the fourth side plate portion 5 as described above. Are welded and the respective lower ends are fixed to the bottom plate portion 2, so that a more firmly fixed state can be realized, and the first or second inclined guide tube can be realized during construction work. It is possible to avoid the risk of dropping 7 and 8. In particular, in the construction method of the simple foundation, as described above, before the first and second inclined pins 43 and 44 are driven, the cylindrical body 46 that constitutes the pin protection member 45 in advance is attached to the first and second Since the step of attaching to the upper end side of the inclined pins 43 and 44 and then driving the distal end sides of the first and second inclined pins 43 and 44 into the ground is adopted, the first Further, the second inclined pins 43 and 44 and the first and second inclined guide tubes 7 and 8 are prevented from being worn or damaged.

  In the simple foundation 1 according to the above-described embodiment, the present invention has been described while illustrating the first and second inclined guide tubes 7 and 8 having two inclined guide tubes as constituent elements. Is not necessarily limited to one having two inclined guide tubes as the constituent elements as in the simple foundation 1, and as a second embodiment, as described below, a total of four inclined guides are used. A tube may be used as a constituent element.

  As shown in FIG. 14, FIG. 15, or FIG. 16, the simplified foundation 61 according to the second embodiment has a third and a fourth in addition to the first and second inclined guide tubes 7, 8. The inclined guide tubes 62 and 63 are constituent elements. The third inclined guide pipe 62 has a lower end welded to the bottom plate portion 2, a lower end side intermediate portion welded to the first side plate portion 3, and an upper end side welded to the second side plate portion 4. Has been. The lower end of the fourth inclined guide tube 63 is welded to the bottom plate portion 2, the middle portion on the lower end side is welded to the second side plate portion 4, and the upper end side is the first side plate portion 3. It is welded to. In addition, on one side and the other side of the first and second side plate portions 3 and 4, arc-shaped notches corresponding to a part of the outer peripheral shape of the third and fourth inclined guide tubes 62 and 63 are provided. Each of the first and second side plate portions 3 and 4 is welded to these notches. The lower ends of the third and fourth inclined guide tubes 62 and 63 are cut while being inclined in the length direction of the top plate portion 2, and the top plate portion 2 includes the third and fourth inclined guides. An opening (not shown) communicating with the inside of the pipes 62 and 63 is formed, and the lower ends of the third and fourth inclined guide pipes 62 and 63 are welded so as to surround these openings.

  Even in the case of the simple foundation 61 according to the second embodiment configured as described above, not only can the construction be performed very easily, but the simple foundation 61 is provided with the first to fourth slopes. Since it is fixed on the ground by the inclined pins inserted into the guide tubes 7, 8, 62, 63 and pierced into the ground, a more stable fixed state can be realized.

  In addition, in the simple foundations 1 and 61 according to the first and second embodiments described above, both are illustrated and described with the contact plate portion 9 disposed and fixed as a contact portion below the top plate portion 5. However, in the present invention, it is not always necessary to provide the contact plate portion 9 or the contact portion, and the upper surface of the central elevating member 23 of the height adjusting device 11 can be lowered by the extension operation of the height adjusting device 11. You may contact | abut to the lower surface of the board part 5. FIG. Further, even when the contact portion is a constituent element, as described above, at least the portion where the upper surface of the central lifting member 23 of the height adjusting device 11 contacts by the extension operation of the height adjusting device 11 is present. As long as it is formed, it may be formed horizontally without being formed into the above-mentioned rectangular shape, or may be formed with a shaft, a protrusion or the like in the horizontal direction.

DESCRIPTION OF SYMBOLS 1 Simple base 2 Bottom plate part 2a Insertion hole 3 1st side plate part 3a 1st notch part 4 2nd side plate part 4a 2nd notch part 5 Top plate part 7 1st inclination guide pipe 8 2nd Inclined guide tube 10 Device arrangement space 11 Height adjusting device 41 Vertical pin 43 First inclined pin 44 Second inclined pin 61 Simple foundation 62 Third inclined pin 63 Fourth inclined pin

Claims (5)

A bottom plate, a plurality of side plates standing upward from the bottom plate, and a top plate fixed to the upper ends of the plurality of side plates and parallel to the bottom plate to support a supported member such as a structure And a plurality of inclined guide tubes that are fixed to the side plate portion and are inclined so that an acute angle is formed with respect to the vertical direction, and at least the lower end side is driven into the ground.
The bottom plate portion is formed with an insertion hole through which a vertical pin whose lower end is vertically embedded in the ground is inserted, and is inserted through the insertion hole between the bottom plate portion and the top plate portion. A device arrangement space is formed in which a height adjusting device that is placed on the upper end of the vertical pin and can be expanded and contracted in the vertical direction is formed, and the upper end of the height adjusting device is formed by an extension operation of the height adjusting device. A simple foundation characterized in that the bottom plate portion is configured to float above the ground as it comes into contact with the top plate portion.   The plurality of side plate portions include first and second side plate portions facing in parallel to each other, and the inclined guide tube includes a first inclined guide tube fixed to a midway portion of the first side plate portion; A third inclined guide tube fixed to the middle portion of the second side plate portion, and a third fixed to both one side of the first side plate portion and one side of the second side plate portion. There are four inclined guide tubes in total including the inclined guide tube and the fourth inclined guide tube fixed to both the other side of the first side plate portion and the other side of the second side plate portion. 2. A simple foundation according to claim 1 characterized in that   An inclined notch is formed in the middle of each of the side plates or the first and second side plates, and the inclined guide tube or the first and second inclined guides are formed in these notches. 3. The simple foundation according to claim 1, wherein the tubes are fixed to each other.   A contact portion is fixed below the top plate portion, and the height adjustment device is configured such that the upper end of the height adjustment device contacts the contact portion instead of the lower surface of the top plate portion by the extension operation of the height adjustment device. 4. The simple foundation according to claim 1, wherein the simple foundation is configured as follows. A construction method of a simple foundation using the simple foundation according to any one of claims 1, 2, 3 or 4,
A vertical pin driving step of vertically driving a vertical pin into the ground so that the upper end protrudes upward from the ground surface;
A vertical pin insertion step of inserting the vertical pin from below the bottom plate portion into an insertion hole formed in the bottom plate portion constituting the simple foundation;
A height adjusting device placing step of placing the height adjusting device on the upper end of the vertical pin;
A height adjusting step for adjusting the height of the upper end of the simple foundation to a predetermined height by extending the height adjusting device;
An inclined pin driving step of inserting an inclined pin into each inclined guide tube or first to fourth inclined guide tubes constituting the simple foundation and driving the inclined pin into the ground,
And a height adjusting device removing step for removing the height adjusting device from the vertical pin.