JP6411130B2 - Driven pile - Google Patents

Description

  The present invention relates to a driving pile that can be driven while preventing rotation and can sufficiently improve the pulling resistance.

  Conventionally, spiral piles have been used as simple piles that support agricultural pipe houses used in plastic houses and the like. Spiral piles not only have low resistance as a whole in soft ground, but also may come off with soil when an external force such as strong wind is repeatedly applied to a greenhouse. In addition, the tip of the spiral pile is usually provided with a holding part that holds the pipe of the agricultural pipe house, but when the spiral pile is swung into the ground, the spiral that has been bite into the ground is completed. It is necessary to consider the orientation of the gripping part of the pile.

  With respect to such a conventional spiral pile, as a pile with improved pulling resistance, Patent Document 1 discloses that a resistance plate having a flat portion and one end fixed to the center of the flat portion of the resistance plate and a root at the other end. An anchor stake is described which consists of a body bar in which a clasp fixing part is formed. Further, Patent Document 2 discloses an anchor pile in which a tapered driving end portion is driven into the ground, a plurality of arc guide portions formed at intervals in the circumferential direction of the tapered driving end portion, and the arc guide. A driving pile including an arc-shaped long body driven into each of the parts is described.

  Moreover, the pile (patent document 3) which provided the arrowhead part which has a barb at the front-end | tip is described as a pile which improved the extraction resistance. Furthermore, when driving a pile, the pile (patent document 4) which protrudes a rotation prevention board in the part embed | buried under the ground is described in order to prevent rotation of a pile.

JP 2006-161442 A JP 2007-262686 A JP-A-5-3335 JP-A-5-127600

  According to the anchor pile of Patent Document 1 and the driven pile of Patent Document 2, the pulling resistance can be improved as compared with the spiral pile. However, when the anchor pile of patent document 1 is used, the hole which embeds the resistance board must be excavated, and when many anchor piles are required like an agricultural pipe house, many resistance boards It is necessary to excavate the burial hole of this, and the effort is great. Furthermore, even the driving pile of Patent Document 2 requires driving the anchor pile and the arc-shaped long body separately, and the driving operation is complicated. Moreover, although the pile of the cited reference 3 and the pile of the cited document 4 can be easily installed in a desired position, the attachment end part of an arrowhead part or an anti-rotation board is along the long axis of a pile, and extraction resistance is fully improved. It is difficult to do.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a driving pile that can easily install a pile at a desired installation location while preventing rotation and can sufficiently improve the pulling resistance. And

In order to achieve the above object, the present invention includes a striking portion provided at the tip of a rod-shaped main body, a striking portion that is driven into the ground by striking applied to the striking portion, and the striking portion is grounded. A driving pile including a holding portion that holds an elongated material at a portion protruding to the ground when driven into the space, and the interval between the peripheral surface and the outer end is set on the peripheral surface of the driving portion. A plurality of first arrow blade plates interposing a narrow portion gradually becoming narrower on the rear end side of the portion, and the same number of second arrows as the first arrow blade plate interposing the narrow portion. Each attachment end with the blade is attached to be inclined with respect to the long axis of the driving portion, and the rod-shaped main body portion is prevented from rotating when the driving portion is driven into the ground . The driving of the attachment end portion of the 1 arrow blade plate and the attachment end portion of the second arrow blade plate A pile driving, characterized in that the inclination direction relative to the longitudinal axis of the is in the reverse sequence.

  Each of the second arrow blades is preferably located in the middle between the adjacent first arrow blades when viewed from the striking part side, so that the pile can be prevented from being inclined during driving.

  The first arrow blade plate and the second arrow blade plate are attached to the same peripheral surface of the driving portion so that they are attached to the peripheral surface of the driving portion via a distance in the longitudinal direction of the driving portion. The number of the arrow blade plates can be reduced, and the attachment end portions of the arrow blade plates can be easily attached, which is preferable.

  A driven pile having two each of the first arrow blade plate and the second arrow blade plate is preferable because it can be driven easily with a simple structure and the pulling resistance can be made larger than that of the spiral pile.

  The inclination angle with respect to the major axis of the driving portion at each attachment end of the first arrow blade plate and the second arrow blade plate is 5 to 10 °, so that the driving can be simplified and the pulling resistance is spiraled. It can be larger than the pile, which is preferable.

  The driving pile can be suitably used as an agricultural driving pile.

  According to the driving pile of the present invention, it is possible to easily drive into the ground while preventing rotation, and the orientation of the holding portion of the rod-shaped member positioned so that the holding member can be surely inserted before driving the pile. Since it can hold | maintain also when driving-in is completed, a driving-in pile can be easily installed in a desired installation place. In addition, the first and second arrow blade plates are attached such that each attachment end portion is inclined with respect to the long axis of the driving portion, and the attachment end portion and the second arrow blade of the first arrow blade plate are attached. Since the inclination direction with respect to the long axis of the driving portion with respect to the mounting end portion of the plate is opposite, the first arrow blade plate and the second arrow blade that have entered the ground due to the hit applied to the hitting portion of the rod-like main body portion The ground can be securely gripped with the plate, and the pull-out resistance of the pile can be increased.

It is a front view of a driving pile to which the present invention is applied. It is a fragmentary perspective view of a driving pile to which the present invention is applied. It is a side view of each arrow-blade board attached to the driving pile which applies this invention. It is a front view which shows the state before driving of the driving pile which applies this invention. It is a front view which shows the state in the middle of driving of the driving pile which applies this invention. It is sectional drawing in the XX line shown in FIG. It is a front view which shows the state of driving-in completion about the driving-in pile which applies this invention. It is a partial front view which shows another aspect about the driving pile which applies this invention. It is a partial front view which shows another aspect about the driving pile which applies this invention. It is a partial front view which shows another aspect about the driving pile which applies this invention.

  Hereinafter, although the form for implementing this invention is demonstrated in detail, the scope of the present invention is not limited to these forms.

  An example of a driving pile according to the present invention is shown in FIG. FIG. 1 is a front view of a driving pile 10, in which a striking portion 12 c is provided at the front end portion of the iron rod-shaped main body portion 12, and a driving end 12 d is provided at the rear end portion of the rod-shaped main body portion 12. A holding portion 12b is provided on the driving end 12d side closest to the hitting portion 12c. As will be described later, the holding portion 12b is attached by welding an inverted U-shaped member to the nearest peripheral surface of the striking portion 12c of the rod-like main body portion 12 so that the pipe placed on the ground can be held between the holding portion 12b and the ground. It has been. The tip surface of the striking portion 12c is a striking surface that is hit with a striking tool such as a hammer 22.

  The driving end 12d side of the rod-shaped main body portion 12 with respect to the holding portion 12b is a driving portion 12a that is driven into the ground by hitting the hitting surface of the hitting portion 12c. Two first arrow blades 16a, 16a are attached to the peripheral surface of the driving portion 12a on the driving end 12d side so as to be rotationally symmetrical about the driving portion 12a. Each of the first arrow blades 16a, 16a is a strip-like plate having a width of about 2 cm and a length of about 10 cm, and the tip protrudes obliquely upward at a projection angle α with respect to the driving portion 12a. Thus, the first arrow vane plate 16a attached to the peripheral surface of the driving portion 12a has a narrow width such that the distance L between the outer edge and the peripheral surface of the driving portion 12a gradually decreases toward the driving end 12d. The part is formed. Further, the attachment ends of the first arrow blades 16a and 16a are inclined in the same direction at an inclination angle θ with respect to the major axis of the driving portion 12a as shown in FIG. In addition, each front end surface of the first arrow blades 16a, 16a is parallel to the driving portion 12a.

  As shown in FIG. 2, the driving pile 10 shown in FIG. 1 has the second arrow blades 16 b and 16 b on the peripheral surface of the driving part 12 a closer to the hitting part 12 c than the first arrow blade plates 16 a and 16 a. It is attached so as to be rotationally symmetric about 12a. Similar to the first arrow blades 16a and 16a, the second arrow blades 16b and 16b are strip-like plates having a width of about 2 cm and a length of about 10 cm, and their tips protrude obliquely in the direction of the striking portion 12c. ing. Each of the second arrow blades 16b, 16b is located in the middle between the first arrow blades 16a, 16a, and when viewed from the striking portion 12c side, the first arrow blades 16a, 16a and the second The arrow blade plates 16b and 16b are attached to the circumferential surface of the driving portion 12a in a cross shape. Also in the second arrow blades 16b and 16b, narrow portions are formed in which the distance L between the outer edge and the peripheral surface of the driving portion 12a gradually becomes narrower on the driving end 12d side.

  Each of the second arrow blade plates 16b, 16b protrudes obliquely upward at the same projection angle α as the first arrow blade plates 16a, 16a with respect to the driving portion 12a. Furthermore, each attachment end of the second arrow blades 16b, 16b is inclined at an inclination angle θ with respect to the major axis of the driving portion 12a as shown in FIG. The inclination directions of the attachment ends of the second arrow blade plates 16b, 16b shown in FIGS. 1 and 2 with respect to the major axis of the driving portion 12a are as shown in FIGS. 2 and 3, respectively. The mounting end portion is opposite to the inclination direction with respect to the major axis of the driving portion 12a.

  It is preferable that the protrusion angle α of the first arrow blade plate 16a and the second arrow blade plate 16b is 25 to 45 °. The driving pile 10 having a protrusion angle α of less than 25 ° tends to have a low pulling resistance, and the driving pile 10 having a protrusion angle α exceeding 45 ° tends to be difficult to drive. Moreover, it is preferable that the inclination | tilt angle (theta) of each attachment edge part of the 1st arrow blade board 16a and the 2nd arrow blade board 16b shall be 5-10 degrees. The driven pile 10 having an inclination angle θ of less than 5 ° tends to have a low pulling resistance, and the driven pile 10 having an inclination angle θ exceeding 10 ° tends to be difficult to drive.

  FIG. 4 shows an initial position when the driving pile 10 shown in FIGS. 1 to 3 is driven perpendicularly to the ground. After positioning the driving pile 10 so that the opening portion of the inverted U-shaped holding portion 12b is positioned immediately above the pipe 20 for the house placed on the ground, the hammering portion 12c is hit with the hammer 22 The driving end 12d is driven into the ground 18. FIG. 5 shows a state of the driving pile 10 in the middle of driving the first arrow blade plates 16a and 16a and the second arrow blade plates 16b and 16b into the ground 18. The driven pile 10 in which the first arrow blades 16a and 16a and the second arrow blades 16b and 16b are driven into the ground 18 in this way is driven without the rod-shaped main body 12 rotating, and the opening of the holding portion 12b. The department maintains its initial position. In this state, the pipe 20 is placed on the ground directly below the opening of the holding portion 12b.

  The reason why the driving pile 10 is driven without rotating the rod-shaped main body 12 will be described with reference to FIG. FIG. 6 is a cross-sectional view taken along line XX shown in FIG. 5, wherein the first arrow blade plates 16 a and 16 a and the second arrow blade plates 16 b and 16 b are provided in the driving portion 12 a in a cross shape, and Although the inclination angles θ of the first arrow blades 16a, 16a and the second arrow blades 16b, 16b are equal to each other, the inclination direction of the driving portion 12a with respect to the major axis is opposite. For this reason, when the first arrow blades 16a and 16a and the second arrow blades 16b and 16b are driven, as shown by the arrows in FIG. The rotational torques generated in the second arrow blades 16b and 16b are approximately equal in magnitude, but their directions are opposite to each other, so that they can cancel each other and prevent the rod-shaped main body 12 from rotating.

  Furthermore, since each of the second arrow blade plates 16b and 16b has the second arrow blade plate 16b positioned between the first arrow blade plates 16a and 16a as shown in FIG. 6, the driven pile 10 is placed in the ground 18. When driving, it is possible to prevent the rod-shaped main body portion 12 from being inclined to one side and the position of the opening of the holding portion 12b from being different from the initial position. In this manner, the driving pile 10 driven into the ground 18 while preventing the rotation and inclination of the rod-shaped main body 12 holds the pipe 20 placed on the ground of the ground 18 in an inverted U shape as shown in FIG. It can be inserted and held in the portion 12b.

  As shown in FIG. 7, when the driven pile 10 driven into the ground 18 is pulled out, it is inclined in the pulling direction among the inclined surfaces of the first arrow blade plates 16a and 16a and the second arrow blade plates 16b and 16b. The surface is in contact with the ground 18 and the pulling resistance can be increased. On the other hand, the driven pile in which each oblique angle α of the first arrow blade plates 16 a and 16 a and the second arrow blade plates 16 b and 16 b is 0 ° has a lower pulling resistance than the driven pile 10. Further, the first arrow blade plates 16a and 16a (first arrow blade plate 16a: width 2 cm, length 10 cm, protrusion angle α 45 ° at a position 5 to 10 cm from the driving end 12d of the rod-shaped main body portion 12 having a length of 65 cm. , Inclination angle θ 5 to 10 °) and second arrow blade plates 16b and 16b (first arrow blade plate 16b: width 2 cm, length 10 cm, protrusion angle at a position 10 cm from the first arrow blade plates 16a and 16a. The pull-out resistance of the driven pile 10 provided with α 45 ° and the inclination angle θ 5-10 ° was 200-300 kg. In the measurement of the pulling resistance, when a predetermined pulling force was applied to the driving pile 10, the driving pile 10 was pulled out at a stretch. On the other hand, the pull-out resistance of a commercially available spiral pile having substantially the same size was 150 to 200 kg. In the measurement of the pulling resistance of the spiral pile, even when a pulling force smaller than 150 to 200 kg was applied to the spiral pile, a phenomenon that a part of the pulling resistance was extracted was observed. In addition, when the driven pile 10 is driven into the ground 18, even if any of the first arrow blades 16 a and 16 a and the second arrow blades 16 b and 16 b hits the stone, the arrow blades bend and can enter the ground. . The bending resistance value of the driving pile 10 can be improved by bending the arrow blade plate in this way. 4-7, although the case where the driving pile 10 was driven perpendicularly with respect to the ground was demonstrated, the pipe 20 may be mounted on the ground from the beginning, and the driving pile 10 may be driven diagonally into the ground.

  Thus, the driving pile shown in FIGS. 1 to 7 that can be driven into the ground 18 while preventing the rotation and inclination of the rod-shaped main body 12 and can improve the pulling resistance can be easily driven into the ground 18. Since it can do, it can use suitably for the driving pile for agriculture, especially the multiple driving pile which supports the agricultural pipe house used for a vinyl house etc. Furthermore, the greenhouse using the driving pile shown in FIGS. 1 to 7 can prevent the driving pile from being pulled out even if strong winds are repeatedly blown.

  The driving pile 10 shown in FIGS. 1 to 7 is provided with a first arrow blade plate 16a, 16a and a second arrow blade plate 16b, 16b at an interval in the longitudinal direction of the driving portion 12a. When the first arrow blades 16a, 16a are driven into the rod-like main body portion 12, the rod-shaped main body portion 12 may be slightly rotated. In order to eliminate such fear, it is preferable to provide the first arrow blade plates 16a and 16a and the second arrow blade plates 16b and 16b on the same periphery of the driving portion 12a as shown in FIG. Further, each of the first arrow blades 16a, 16a and the second arrow blades 16b, 16b is formed as a strip-like plate as shown in FIG. 9A, and the front end surface is inclined with respect to the driving portion 12a. Alternatively, a triangular plate may be used as shown in FIG. Furthermore, although the driving pile 10 shown in FIGS. 1-7 provided the two arrow blades in each of the 1st arrow blade plate 16a, 16a and the 2nd arrow blade plate 16b, 16b, the 1st arrow blade Three or more arrow blade plates may be provided on each of the plates 16a, 16a and the second arrow blade plates 16b, 16b, and each of the second arrow blade plates 16b is viewed from the distal end side of the rod-shaped main body portion 12. It is preferable to provide it so that it may be located in the middle between adjacent 1st arrow blades 16a and 16a. However, welding the rear end of a large number of arrow blade plates on the same periphery of the driving portion 12a tends to make the welding operation difficult, and the number of arrow blade plates welded to the same periphery is about four. It is preferable to do. Furthermore, by making the size and shape of the plurality of arrow blades attached to the rod-shaped main body portion 12 the same, when the driving pile 10 is driven, the rotation of the rod-shaped main body portion 12 can be further prevented. In addition, although the 1st arrow blade board 16a, 16a and the 2nd arrow blade board 16b, 16b of FIGS. 1-9 were inclined by the predetermined angle from the each attachment end, from the attachment end, Alternatively, the substantially entire twisted arrow blade plate may be inclined at a predetermined angle at a position slightly outside.

  1 to 7, the holding portion 12b has an inverted U-shape, but as shown in FIG. 10A, it may be a U-shaped holding portion 12b, or an annular holding portion 12b. It is good. The driving pile 10 of the U-shaped holding part 12b or the annular holding part 12b can hold the pipe, the rope or the like in the holding part 12b after driving the driving part 12a into the ground 18. Further, as shown in FIG. 10C, the striking portion 12c may be thicker than the striking portion 12a, and the upper end surface that is the striking surface may be a flat surface. It may be provided, and a flat surface as the flat hitting portion 12c may be provided on the upper portion thereof. In addition, although the rod-shaped main-body part 12 of the driving pile 10 shown in FIGS. 1-10 used the thing of round cross section, the thing of arbitrary shapes, such as an ellipse and a rectangle, can be used.

  The driving pile according to the present invention can be used as a driving pile that holds pipes, ropes, and the like, and can be suitably used as an agricultural driving pile that supports an agricultural pipe house used particularly in a vinyl house or the like.

  10: Pile, 12: Bar-shaped body part, 12a: Driving part, 12b: Holding part, 12c: Striking part, 12d: Driving end, 16a: First arrow blade board, 16b: Second arrow blade board, 18: Ground , 20: pipe, 22: hammer, L: distance between the outer edge of the first arrow vane plate 16a and the peripheral surface of the driving portion 12a, α: protrusion angle, θ: inclination angle

Claims (6)

A striking portion provided at the tip of the rod-shaped main body, a striking portion that is driven into the ground by a striking action applied to the striking portion, and a portion that projects to the ground when the driving portion is driven into the ground A driving pile including a holding portion for holding a material,
A plurality of first arrow blade plates interposing a narrow portion where the interval between the peripheral surface and the outer end gradually becomes narrower on the rear end side of the rod-shaped main body portion on the peripheral surface of the driving portion, Each of the attachment end portions of the first arrow blade plate and the same number of second arrow blade plates is attached to be inclined with respect to the long axis of the driving portion, with a narrow portion interposed therebetween ,
The driving portion between the mounting end portion of the first arrow blade plate and the mounting end portion of the second arrow blade plate so that the rod-shaped main body portion does not rotate when the driving portion is driven into the ground. A driving pile characterized in that the direction of inclination with respect to the long axis of the steel is reverse.   2. The driving pile according to claim 1, wherein each of the second arrow blade plates is located in the middle between the adjacent first arrow blade plates when viewed from the striking portion side.   The said 1st arrow blade board and the said 2nd arrow blade board are attached to the surrounding surface of the said drive part via the space | interval in the longitudinal direction of the said drive part, The Claim 1 or Claim 2 characterized by the above-mentioned. The driving pile described in 1.   Each of the said 1st arrow blade board and the said 2nd arrow blade board is two sheets, The driving pile of Claim 2 characterized by the above-mentioned.   The inclination angle with respect to the major axis of the driving portion at each attachment end of the first arrow blade plate and the second arrow blade plate is 5 to 10 °. The driving pile described in 1.   The driving pile according to claim 1, wherein the driving pile is an agricultural driving pile.

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