Mat for pile core regulation

Abstract

To provide a mat for pile core regulation which can easily perform core positioning of a pile, and which is easy to carry around.SOLUTION: A mat 10 for pile core regulation is installed on the ground when constructing a pile 30 of a predetermined diameter. The mat 10 for pile core regulation has a resin placing part 11 including a hole part 12 whose dimension is larger than the predetermined diameter of the pile 30.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a pile core defining mat. [Background technology]

[0002] Piling work refers to the construction of piles so that the ground can support the load of a building when the ground is weak. Types of piles include prefabricated piles, which are manufactured in a factory or on-site and then installed in the ground (by hammering, pressing, or burying), and cast-in-place piles, which are holes excavated in the ground into which a reinforcing bar cage is inserted and concrete is poured.

[0003] In such pile construction, it is preferable to improve the positioning accuracy of the position where the pile, such as a cast-in-place pile or a prefabricated pile, is installed. For example, Patent Document 1 proposes a pile embedding method in which a part of a steel plate with a hole with a diameter slightly larger than the diameter of the pile is laid and fixed by the pile embedding machine body, and the pile is installed through the hole in the steel plate. In this way, the hole in the steel plate acts as a guide, and there is no risk of the pile being misaligned during installation, making it easy to align the core of the pile. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 5-98642 Summary of the Invention [Problem to be solved by the invention]

[0005] The pile burying method described in Patent Document 1 uses a steel plate with holes provided as guides for the positions where the piles are to be installed. However, the steel plate is heavy and therefore difficult to transport.

[0006] The present invention has been made in consideration of the above problems, and aims to provide a pile core determination mat that makes it easy to align the core position of piles and is easy to carry. [Means for solving the problem]

[0007] In order to achieve the above object, one aspect of the pile core defining mat according to the present invention is as follows: Install piles of the specified diameter. in front Installed on the ground Used to guide the position of the pile core when constructing the pile. A pile core regulation mat, a resin installation portion having a hole portion having a dimension larger than the predetermined diameter, An indication portion is provided around the hole in the laying portion to indicate the center position of the hole, The instruction portion is characterized in that it is a marking drawn on the upper surface of the laying portion.

[0008] According to this aspect, by installing the pile through the hole having a dimension larger than the diameter of the pile, the hole acts as a guide for the position to install the pile, so that the core position of the pile can be easily aligned. Furthermore, since the installation part in which the hole is provided is made of resin, it can be made lighter than a conventional iron plate, and therefore it can be easily carried.

[0010] According to this aspect, the center position of the hole can be more clearly indicated by providing an indication portion around the hole in the laying portion. This makes it possible to suppress deviation between the installation position of the pile and the center position of the hole, making it easier to align the core of the pile. In addition, if the installation position of the pile is deviated from the center position of the hole, especially when the diameter of the pile and the dimension of the hole are close, there is a risk that the pile will interfere with the laying portion around the hole as the installation of the pile progresses. In contrast, in this aspect, the indication portion more clearly indicates the center position of the hole, thereby suppressing interference between the pile and the laying portion.

[0011] In another aspect of the pile core determining mat according to the present invention, the mat further comprises a dimension adjusting portion for adjusting the planar dimension of the hole.

[0012] If the difference between the diameter of the pile and the dimensions of the hole is too large, the hole may not function as a guide for aligning the pile core, which makes it difficult to use and lacks versatility. According to this aspect, the dimension adjustment unit makes it possible to adjust the planar dimensions of the hole to match the diameter of the pile, making it possible to accommodate various pile diameters and improving versatility.

[0013] In another aspect of the pile core defining mat according to the present invention, the mat further comprises a locking portion for fixing the laying portion to an installation surface.

[0014] According to this aspect, when using the pile core determination mat, the laying part is fixed to the installation surface by the engaging part, and the position of the hole provided in the laying part is also fixed relative to the installation surface, thereby preventing the position of the hole from shifting relative to the installation surface and making it easier to align the pile core.

[0015] In another aspect of the pile core defining mat according to the present invention, the mat further comprises a folding section for folding the laying section.

[0016] According to this aspect, when transporting, the laying portion can be folded using the folding portion, thereby reducing the overall size of the mat and making it easier to carry.

[0017] In another aspect of the pile core determining mat according to the present invention, the planar shape of the hole is a circle having a diameter larger than the predetermined diameter.

[0018] According to this aspect, by making the holes circular, which is the same shape as the stakes, the opening area of ​​the holes required to allow the stakes to pass through them can be reduced compared to when the holes are rectangular or have a different shape from the stakes, and the overall size of the mat can also be reduced, making it even easier to carry.

[0019] In another aspect of the pile core determining mat according to the present invention, the dimension adjustment portion is formed by a plurality of graduated guides that are slidable toward the center of the hole portion.

[0020] According to this aspect, by forming the dimension adjustment portion with a graduated guide that can slide freely toward the center of the hole, it becomes possible to continuously and arbitrarily change the position of the guide along the radial direction of the hole, thereby making it easy to adjust the hole to the desired diameter.

[0021] In another aspect of the pile core determining mat according to the present invention, the dimension adjustment portion is formed by a plurality of ring bodies having different inner diameters.

[0022] According to this aspect, by forming the dimension adjustment section from a plurality of ring bodies having different inner diameters, the desired hole diameter can be easily and reliably achieved by combining the ring bodies when setting an appropriate hole diameter according to the diameter of the pile.

[0023] In another aspect of the pile core determining mat according to the present invention, the dimension adjusting portion is formed by a drawing portion which reduces the dimension of the hole portion.

[0024] According to this aspect, by forming the dimension adjusting portion by a constriction portion that reduces the dimension of the hole, the diameter of the hole can be adjusted by the position of the tip of the constriction portion. The position of the tip of the constriction portion can be changed continuously and arbitrarily along the radial direction of the hole, which makes it easy to adjust the hole to a desired diameter. Effect of the Invention

[0025] As can be understood from the above description, the pile core determination mat of the present invention makes it easy to align the pile core and is easy to carry. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a diagram showing an example of application of a pile core regulation mat according to an embodiment in pile construction. [Diagram 2] FIG. 1 is a plan view showing a schematic configuration of a pile core defining mat according to an embodiment; [Diagram 3]Schematic diagram showing the pile core regulation mat in the folded state [Figure 4] Schematic diagram of a guide with scale as an example of a dimension adjustment unit [Diagram 5] FIG. 13 is a schematic diagram of a ring body as another example of a dimension adjustment portion; [Figure 6] Schematic diagram of a throttle piece as another example of a dimension adjustment portion [Figure 7] Schematic diagram of a guide with scale as another example of a dimension adjustment portion [Figure 8] FIG. 13 is a schematic diagram of a throttle member as another example of the dimension adjustment portion; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an embodiment will be described with reference to the accompanying drawings. In order to facilitate understanding of the description, the same components in each drawing are denoted by the same reference numerals as much as possible, and duplicated description will be omitted.

[0028] In the following description, the x, y, and z directions are perpendicular to each other. The x and y directions are horizontal, and the z direction is vertical. The x direction is the extension direction of one of two pairs of opposing sides of the rectangular installation portion 11, and the y direction is the extension direction of the other. For ease of explanation, the positive z direction side may be referred to as the upper side, and the negative z direction side may be referred to as the lower side.

[0029] 1 is a diagram showing an example of application of a pile core defining mat 10 according to an embodiment in pile construction. In this embodiment, pile construction refers to construction for installing piles so that the ground can support the load of a building when the ground is weak.

[0030] As shown in Fig. 1, in pile construction, a pile driver 1 is used to install a pile at a predetermined pile core A. Types of piles used in pile construction include prefabricated piles that are manufactured in a factory or on-site and then installed (by hammering, pressing, or burying) in the ground, and cast-in-place piles in which a reinforcing bar cage is inserted into a hole excavated in the ground and concrete is poured into it.

[0031] Various heavy machinery is applied depending on the type of pile and the construction method as the pile driver 1. For example, when constructing cast-in-place piles, an earth drill machine can be used as the pile driver 1.

[0032] The pile core defining mat 10 according to the embodiment is used in pile construction to easily indicate the position where the pile driver 1 drives the pile, i.e., the position of the pile core A. The configuration of the pile core defining mat 10 will be described with reference to Fig. 2 in addition to Fig. 1. Fig. 2 is a plan view showing a schematic configuration of the pile core defining mat 10 according to the embodiment.

[0033] 1 and 2, a pile core determining mat 10 is installed on the ground when constructing a pile of a predetermined diameter. The pile core determining mat 10 has a laying portion 11 and a hole portion 12.

[0034] The laying part 11 is a flat plate-like member placed on the ground surface where the pile construction is to be performed. The external shape of the laying part 11 is, for example, a substantially square shape as shown in Fig. 2, and it is installed so that one of two pairs of opposing opposite sides extends in the x direction and the other extends in the y direction. The laying part 11 is made of resin. The dimensions of the laying part 11 are, for example, 4 m square, 20 mm thick, and about 40 kg in weight.

[0035] The hole 12 is formed in approximately the center of the main surface of the laying portion 11. The shape of the hole 12 is, for example, circular as shown in Fig. 2, and is formed with dimensions larger than the diameter of the pile to be constructed (an example of a predetermined diameter), thereby allowing the pile to pass through the hole 12.

[0036] According to the pile core determining mat 10 of this embodiment, by installing the pile through the hole portion 12 having a dimension larger than the diameter of the pile, the hole portion 12 serves as a guide for the position where the pile is installed, so that the alignment of the pile core A can be easily performed. In addition, in conventional pile burying work, as described in the above-mentioned Patent Document 1, a steel plate in which holes are provided as guides for the installation position of the pile is often used. In contrast, in this embodiment, the laying portion 11 in which the hole portion 12 is provided is made of resin, so that the weight of the pile core determining mat 10 can be reduced compared to conventional steel plates. This makes it easier to carry the pile core determining mat 10. Therefore, the pile core determining mat 10 of this embodiment can easily align the core of the pile and can be easily carried. As a result, the workability of pile construction can be improved.

[0037] The hole 12 may have any shape as long as it is at least larger than the diameter of the pile and allows the pile to pass through, and may have a shape other than a circle, such as a rectangle.

[0038] However, the planar shape of the hole 12 is preferably a circle with a diameter larger than the predetermined diameter of the pile. By making the hole 12 circular in the same shape as the pile, the opening area of ​​the hole 12 required to allow the pile to pass through it can be reduced compared to when the hole 12 has a different shape from the pile, such as a rectangular shape, and the overall size of the pile core determination mat 10 can also be reduced. This makes it even easier to carry the pile core determination mat 10.

[0039] In addition, in the pile core defining mat 10 of this embodiment, it is preferable that an indication portion 13 indicating the center position C of the hole portion 12 is provided around the hole portion 12 in the laying portion 11. The indication portion 13 is, for example, a marking (which can also be expressed as a sign or a mark) drawn on the upper surface of the laying portion 11. As shown in FIG. 2, for example, two sets of indication portions 13 are provided along two intersecting (preferably perpendicular) diameters of the hole portion 12, facing each other at both ends of each diameter, for a total of four indication portions 13. A straight line B connecting the two opposing indication portions 13 in each set is the diameter of the hole portion 12, and the two straight lines B connecting the two sets of indication portions 13 intersect at the center position C of the hole portion 12. In other words, the two straight lines B are the center line of the hole portion 12.

[0040] For example, in pile construction, a worker can align the pile installation position by operating the pile driver 1 to align the position of the pile core A shown in Figure 1 with the center position C of the hole portion 12 shown in Figure 2.

[0041] In this way, the indicator 13 for indicating the center position C of the hole 12 is provided around the hole 12 in the laying section 11, so that the center position C of the hole 12 can be more clearly indicated to the worker. This makes it possible to suppress deviation between the installation position of the pile and the center position of the hole, and makes it easier to align the core of the pile. In addition, if the installation position of the pile (pile core A shown in FIG. 1) is deviated from the center position C of the hole 12, there is a risk that the pile will interfere with the laying section 11 around the hole 12 as the installation of the pile progresses, especially when the diameter of the pile and the dimension of the hole 12 are close. In contrast, in this embodiment, the indicator 13 more clearly indicates the center position C of the hole 12, so that interference between the pile and the laying section 11 can be suppressed.

[0042] In addition, the indication portion 13 need only be something that can be seen by workers when installing the pile core determination mat 10 on the ground, and the form of the indication portion 13 may be something other than marking, such as the surface of the laying portion 11 being processed into a convex or concave shape, or a separate component added to the surface of the laying portion 11.

[0043] In addition, in the pile core defining mat 10 of this embodiment, the laying portion 11 is preferably fixed to the installation surface by engaging portions 14 such as driving pins at the four corners of the rectangular shape, as shown in Figures 1 and 2, for example.

[0044] In this way, when using the pile core determination mat 10, the laying portion 11 is fixed to the installation surface by the engaging portion 14, and the position of the hole portion 12 provided in the laying portion 11 is also fixed relative to the installation surface, thereby preventing the position of the hole portion 12 from shifting relative to the installation surface and making it easier to align the pile core A.

[0045] In addition, the pile core defining mat 10 of this embodiment preferably further includes a folding section 15 for folding the laying section 11. The folding section 15 is, for example, a hinge. In the example of FIG. 2, the laying section 11 is divided into two elements at the center position in the y direction, and these two elements are connected by a hinge. FIG. 3 is a schematic diagram showing the pile core defining mat 10 in a folded state. As shown in FIG. 3, the laying section 11 can be folded in the y direction around the folding section 15.

[0046] In this way, by folding the laying portion 11 by the folding portion 15 during transportation, the overall size of the pile core defining mat 10 can be reduced, making it easier to carry.

[0047] The manner in which the laying section 11 is folded by the folding section 15 is not limited to that shown in Figs. 2 and 3. For example, the laying section 11 may be further divided at the center position in the x direction and further folded in the x direction from the folded state shown in Fig. 3. Alternatively, the laying section 11 may be folded around a diagonal line of the rectangular shape of the laying section 11. The specific structure of the folding section 15 may be other than a hinge, and may be, for example, a configuration in which a cut is made in the folding portion of the laying section 11 along a folding line from one main surface side, thereby making it easy to fold the laying section 11 at the cut position.

[0048] In addition, the pile core determination mat 10 of this embodiment is preferably provided with a dimension adjustment unit that adjusts the planar dimension of the hole 12. If the difference between the diameter of the pile and the dimension of the hole 12 is too large, the hole 12 may not function as a guide for aligning the pile core A, which causes a problem of difficulty in use and lack of versatility. In this embodiment, the dimension adjustment unit makes it possible to adjust the planar dimension of the hole 12 to match the diameter of the pile, so that it can accommodate various pile diameters and improve versatility. It can also be used to install multiple types of piles in pile construction.

[0049] Hereinafter, with reference to Figs. 4 to 8, a number of specific examples of the dimension adjusting portion applied to the pile core defining mat 10 of this embodiment will be described.

[0050] Fig. 4 is a schematic diagram of a graduated guide 16 as an example of a dimension adjustment portion. In the example of Fig. 4, the dimension adjustment portion is formed by a plurality of graduated guides 16 that can slide toward the center of the hole portion 12. In Fig. 4, an example of the outer shape of the pile 30 is illustrated by a dotted line.

[0051] The graduated guide 16 has a graduated portion 16A and a guide portion 16B. The graduated portion 16A is installed in the laying portion 11 so as to be movable along the radial direction of the hole 12. The guide portion 16B is connected to the tip of the graduated portion 16A on the center side of the hole 12. The guide portion 16B is a member whose longitudinal direction is the tangent direction of the circular shape of the hole 12 or the pile 30, as shown in FIG. 4, for example.

[0052] 4, a total of four graduated guides 16 are provided along two intersecting (preferably perpendicular) diameters of the hole 12, two sets facing each other on both ends of each diameter. By aligning the lengths of the graduated portions 16A of the four graduated guides 16 that extend toward the center of the hole 12, the four guide portions 16B at the tips can define a range in which the pile 30 can be installed that is narrower than the opening area of ​​the hole 12 and is centered on the center position of the hole 12.

[0053] In this way, by forming the dimension adjustment portion with a graduated guide 16 that can slide freely toward the center of the hole portion 12, it becomes possible to continuously and arbitrarily change the position of the guide portion 16B along the radial direction of the hole portion, thereby making it easy to adjust the hole portion 12 to the desired diameter.

[0054] Fig. 5 is a schematic diagram of ring bodies 17A and 17B as another example of the dimension adjustment portion. In the example of Fig. 5, the dimension adjustment portion is formed by a plurality of ring bodies 17A and 17B having different inner diameters. Ring body 17A is an annular member having an outer diameter equal to the inner diameter of hole 12 and formed with a predetermined width along the circumferential direction. Ring body 17B is an annular member having an outer diameter equal to the inner diameter of ring body 17A and formed with a predetermined width along the circumferential direction.

[0055] 5, by installing ring body 17A along the inner diameter of hole 12, the range in which piles can be installed can be reduced to the range of the inner diameter of ring body 17A, which is smaller than hole 12. Furthermore, by installing ring body 17B along the inner diameter of ring body 17A, the range in which piles can be installed can be reduced to the range of the inner diameter of ring body 17B, which is smaller than ring body 17A.

[0056] In this way, by forming the dimension adjustment section using multiple ring bodies 17A, 17B with different inner diameters, when setting an appropriate diameter of the hole portion 12 according to the diameter of the pile, the desired diameter of the hole portion 12 can be easily and reliably achieved by combining the ring bodies 17A, 17B.

[0057] The configuration of the multiple ring bodies 17A and 17B is not limited to the example shown in Fig. 5. For example, the radial dimension of each ring body may be made smaller and the number of ring bodies may be increased to three or more, thereby allowing for more detailed adjustment of the hole diameter. Alternatively, another ring body may be provided on the hole center side of the ring bodies 17A and 17B shown in Fig. 5, thereby allowing for a wider adjustment range of the hole diameter.

[0058] Fig. 6 is a schematic diagram of an aperture piece 18 as another example of the dimension adjustment portion. In the example of Fig. 6, the dimension adjustment portion is formed by a plurality of aperture pieces 18 (aperture portion) that reduce the dimension of the hole portion 12. The plurality of aperture pieces 18 have a structure similar to that of an iris diaphragm applied to the aperture mechanism of a well-known camera lens. The plurality of aperture pieces 18 are overlapped, and are configured so that the area of ​​the central opening can be changed by changing the amount of advancement of each aperture piece 18 toward the center of the hole portion.

[0059] In this way, by forming the dimension adjustment portion with a plurality of throttling pieces 18 that reduce the dimension of the hole 12, the diameter of the hole 12 can be adjusted by the position of the tip of the throttling pieces 18. It becomes possible to continuously and arbitrarily change the position of the tip of the throttling pieces 18 along the radial direction of the hole 12, which makes it easy to adjust the hole 12 to the desired diameter.

[0060] Fig. 7 is a schematic diagram of a scaled guide 19 as another example of a dimension adjustment section. The configuration shown in Fig. 7 is a modified example of the scaled guide 16 described with reference to Fig. 4. The scaled guide 19 shown in Fig. 7 is installed at a different position from the scaled guide 16 in Fig. 4.

[0061] As shown in Fig. 7, the four scaled guides 19 are arranged along the diagonals of the rectangular laying section 11. Because the laying section 11 is substantially square and the holes 12 are circular, the dimension from the outer edge of the laying section 11 to the holes 12 is longest along the diagonal of the laying section 11. Therefore, by arranging the scaled guides 19 on the diagonal, the length that can be accommodated within the laying section 11 can be increased as shown in Fig. 7. This makes it possible to reduce the portion of the scaled guides 19 that protrudes outside the laying section 11 even when most of the scaled guides 19 are accommodated within the laying section 11, improving the appearance of the pile core definition mat 10.

[0062] 8 is a schematic diagram of a throttle member 20 as another example of the dimension adjustment portion. The configuration shown in FIG. 8 is a modified example of the throttle piece 18 (throttle portion) described with reference to FIG.

[0063] The shape of the squeeze member 20 shown in FIG. 8 is different from that of the squeeze piece 18 shown in FIG. 6. The squeeze piece 18 is configured to close the outer edge of the hole 12 and reduce the opening, whereas the squeeze member 20 shown in FIG. 8 does not close the outer edge of the hole 12 and defines the range in which the pile 30 can be installed by the tip of the squeeze member 20. For example, as shown in FIG. 8, the multiple squeeze members 20 are linked together and slide in the circumferential direction or radial direction of the hole 12, guided by a guide member (not shown) or driven by an actuator (not shown). As a result, the tip 20A of each squeeze member 20 advances toward the center of the hole, and as a result, the range in which the pile can be installed can be defined as a range narrower than the opening area of ​​the hole 12 and centered on the center position of the hole 12.

[0064] The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Any design modifications made by a person skilled in the art to these specific examples are also included within the scope of the present disclosure as long as they have the features of the present disclosure. The elements of each of the above-mentioned specific examples and their arrangements, conditions, shapes, etc. are not limited to those exemplified and can be changed as appropriate. The combination of each of the elements of each of the above-mentioned specific examples can be changed as appropriate as long as no technical contradiction occurs. [Explanation of symbols]

[0065] 10. Mat for pile core regulation 11 Installation section 12 Hole 13 Instruction section 14 Locking part 15 Folding section 16, 19 Guide with scale (dimension adjustment part) 17A, 17B Ring body (dimension adjustment part) 18 Squeezing piece (squeezing part, dimension adjustment part) 20. Drawer parts (drawer section, dimension adjustment section) 30 stakes

Claims

1. A pile core definition mat that is installed on the ground before constructing a pile of a predetermined diameter and is used to guide the position of the pile core when constructing the pile, a resin installation portion having a hole portion having a dimension larger than the predetermined diameter, An indication portion is provided around the hole in the laying portion to indicate the center position of the hole, A pile core determination mat, characterized in that the instruction portion is a marking drawn on the upper surface of the laying portion.

2. The pile core defining mat according to claim 1 , further comprising a dimension adjusting portion for adjusting a planar dimension of the hole portion.

3. The pile core defining mat according to claim 1 or 2, further comprising a locking portion for fixing the laying portion to an installation surface.

4. The pile core defining mat according to any one of claims 1 to 3, further comprising a folding section for folding the laying section.

5. The pile core defining mat according to claim 1 , wherein the hole has a planar shape that is a circle having a diameter larger than the predetermined diameter.

6. A pile core determination mat as described in claim 2 or any one of claims 3 to 5 dependent on claim 2, characterized in that the dimension adjustment portion is formed by a plurality of graduated guides that can slide freely toward the center of the hole portion.

7. The pile core determining mat according to claim 2 or any one of claims 3 to 5 dependent on claim 2, characterized in that the dimension adjustment portion is formed by a plurality of ring bodies having different inner diameters.

8. A pile core determining mat as described in claim 2 or any one of claims 3 to 5 dependent on claim 2, characterized in that the dimension adjustment portion is formed by a constriction portion that reduces the dimension of the hole portion.

Images