JP6346387B1 - Housing foundation structure and housing foundation construction method - Google Patents

Abstract

An object of the present invention is to suppress the movement of piles even when a part of the ground collapses and to prevent the house from tilting. A foundation structure 10 of a house connects a plurality of piles 12 driven into the ground 11, an annular frame 13 connected to the piles 12 to surround an upper end portion of the pile 12, and a plurality of frames 13. And a foundation 17 supported on the upper ends of the plurality of piles 12. The frame 13 is coupled to the pile 12 by a plurality of bolts 14 and 15 that are screwed to the frame 13 and project from the frame 13 coming into contact with the pile 12. The connecting member 16 connects the piles 12 adjacent to each other via a frame 13 and a bolt 14. [Selection] Figure 2

Description

  The present invention relates to a foundation structure of a house and a construction method for the foundation.

  The building is supported by a foundation built on the ground. In soft ground, some or all of the foundation may sink due to the weight of the building and foundation or an earthquake. In this way, when the foundation sinks after the building is built, it is called uneven settlement. 2. Description of the Related Art Conventionally, a structure in which a pile is placed on the ground and the foundation is supported by the pile is known in order to prevent uneven settlement in soft ground.

  Patent Document 1 discloses a structure in which an energy absorbing brace is disposed in the vicinity of the head of a pile inserted into a foundation.

JP 11-117296 A

  Pile that is placed on the ground to support the foundation of the house does not have the head of the pile connected to the foundation. When the ground is shaken or moved due to an earthquake or the like, the head of the pile may move and come off from just below the foundation. As a result, the foundation is not supported by the pile, and the foundation may sink or tilt.

  The present invention has been made in view of the above-described circumstances, and its purpose is to provide means capable of suppressing the pile supporting the foundation from coming off from directly below the foundation even if the ground is shaken or moved. There is to do.

  (1) A basic structure of a house according to the present invention connects a plurality of piles driven into the ground, an annular frame connected to the piles and surrounding an upper end portion of the piles, and the plurality of frames. A connecting member and a foundation supported by upper ends of the plurality of piles.

  Since the piles are connected via the frame, even if the ground is shaken or moved, the distance between the piles does not change, and the piles can be prevented from coming off from directly below the foundation.

  (2) The frame may be connected to the pile by a plurality of bolts screwed into the frame and projecting from the frame in contact with the pile.

  A common size frame can be used for piles with different outer diameters.

  (3) The connecting member may be connected to the bolt.

  The connecting member can be easily connected to the frame.

  (4) The frames connected to the three adjacent piles may be connected to each other by the connecting member.

  Changes in the distance between the piles are effectively suppressed.

  (5) The connecting member may be a bar whose length in the longitudinal direction can be changed.

  A connection member can respond to the distance between various piles.

  (6) The pile may have a convex portion protruding from the outer peripheral surface of the upper end portion, and the frame may be a polygonal ring.

  During construction, rotational torque can be transmitted to the pile via the convex portion. The outer shape of the frame can be reduced by arranging the convex portions in correspondence with the corners of the polygonal frame.

  (7) The construction method of the present invention includes a first step of driving a pile into the ground, a second step of connecting a frame to the upper end of the pile, a third step of connecting the frame with a connecting member, and a foundation on the pile. And a fourth step of placing.

  After driving the pile into the ground, the present invention can be easily constructed by connecting the upper end of the pile before placing the foundation on the pile.

  According to the present invention, even if shaking or movement occurs in the ground, the pile supporting the foundation can be prevented from coming off from directly below the foundation.

FIG. 1 is a perspective view showing an aspect in which the pile 12 and the connecting member 16 are connected. FIG. 2 is a perspective view showing an aspect in which adjacent piles 12 are connected. FIG. 3A is a plan view schematically showing the bottom of the foundation 17 of the residential foundation structure 10 according to this embodiment, and FIG. 3B is a cross-sectional view schematically showing the residential foundation structure 10. FIG. FIG. 4 is a perspective view showing the pile 12. 5A is a plan view showing the frame 13, and FIG. 5B is a VB-VB cross-sectional view in FIG. 5A. 6A is a plan view of the bolt 14, FIG. 6B is a sectional view taken along VIB-VIB of FIG. 6A, and FIG. 6C is a side view of the bolt 14. . FIG. 7 is an exploded perspective view of the frame 13, the bolt 14, and the bolt 15. FIG. 8 is an exploded perspective view of the bolt 14 and the connecting member 16. FIG. 9A is a perspective view schematically showing the groove 58, and FIG. 9B is a cross-sectional view taken along the line IXB-IXB in FIG. 9A. FIG. 10 is a schematic diagram showing an aspect in which the groove 58 is backfilled with the soil 59 in the fifth step 55. FIG. 11 is an explanatory diagram of the construction method 50 according to the embodiment. Fig. 12 (A) is a plan view showing a mode in which the frame 13 is fixed to the pile 12 according to the embodiment, and Figs. 12 (B) and 12 (C) are fixed to the pile 12 according to the modification. It is a top view which shows the done aspect. FIG. 13A is a plan view showing a mode in which the frame 61 is fixed to the pile 12, and FIG. 13B is a front view of FIG. 13A.

  Hereinafter, embodiments of the present invention will be described. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without departing from the gist of the present invention.

  The basic structure 10 of the house of this embodiment is shown in FIGS. The house foundation structure 10 includes a plurality of piles 12, a frame 13, bolts 14 and 15, a connecting member 16, and a foundation 17. In FIG. 1, the foundation 17 is omitted, and a middle portion of the connecting member 16 in the length direction is cut away. Moreover, a broken line represents the pile 12 in the ground 11, and the middle part of the length direction is notched. The ground 11 is excavated in a groove shape, and the bottom of the groove is drawn. Moreover, in FIG. 2, the foundation 17 is abbreviate | omitted and the middle to the lower end of the length direction of the pile 12 is abbreviate | omitted. In FIG. 3A, the ground 11 and the foundation 17 are omitted.

  In the residential base structure 10, the vertical direction 7, the front-rear direction 8, and the left-right direction 9 are defined as follows. The length direction of the pile 12 (vertical direction in FIG. 3B) is the vertical direction 7, and the direction orthogonal to the vertical direction 7 in the horizontal plane (the horizontal direction of the paper in FIG. 3B) is the longitudinal direction 8. is there. The left-right direction 9 is a direction orthogonal to both the up-down direction 7 and the front-rear direction 8 (a direction perpendicular to the paper surface in FIG. 3B).

  The pile 12 is a steel pipe pile, for example. The pile 12 may be a ready-made pile or a cast-in-place pile made of concrete, wood, steel pipe, or the like. The steel pipe pile is press-fitted to a support layer (for example, natural ground 21) of the ground 11 while being rotated by a heavy machine installed on the ground. The steel pipe pile can be buried in the ground 11 with no soil removal and low vibration. Moreover, a steel pipe pile has the advantage that a supporting force increases only by the projection area of the perpendicular direction of a pile tip member after embedding. Steel pipe piles that have been prepared in advance to a predetermined length at a factory or the like are carried into the construction site and placed. When the depth to the support layer is deep, the pile body is driven into the ground while being welded or the like at the construction site.

  As shown in FIG. 3A, for example, a plurality of piles 12 are arranged in the front-rear direction 8 and the left-right direction 9 in accordance with the shape of the foundation of the house and placed on the ground. In the present embodiment, a total of 22 piles 12 are driven on the ground. The number and interval of the piles 12 are appropriately adjusted according to the type and shape of the foundation 17 and the support load.

  As shown in FIG. 4, the pile 12 includes two pile main bodies 26 (26A, 26B), a pile tip member 27, and four convex portions 28 (28A, 28B, 28C, 28D). The pile main bodies 26A and 26B are both cylindrical. The pile main bodies 26A and 26B are arranged on the coaxial line and joined at the end portions. A pile tip member 27 is attached near the tip (lower end) of the pile body 26A.

  In addition, the pile main body 26 may be one, and 3 or more may be joined according to the depth of the support layer. Moreover, the pile 12 does not have the pile tip member 27, and a spiral wing may be provided on the peripheral surface at the tip of the pile body 26. Moreover, the convex part 28 does not need to be, and even when it has, the number is not restricted to four.

  As shown in FIG. 4, the protrusions 28 </ b> A and 28 </ b> B protrude radially outward from the outer peripheral surface 39 of the pile body 26 </ b> A. The pile body 26 </ b> A is a flat plate elongated in the vertical direction 7. Each convex part 28A, 28B is arrange | positioned at the upper end part of the pile main body 26A so that it may become line-symmetrical about the pile main body 26A, and is connected with the pile main body 26A by welding. The convex portions 28C and 28D are connected to the pile body 26B in the same manner as the convex portions 28A and 28B. In addition, each convex part 28 may be provided in outer peripheral surfaces or inner surfaces other than the upper end part of a pile main body, and does not need to be a line-symmetrical position centering on a pile main body. Moreover, the shape of each convex part 28 is not restricted to a flat plate.

  The pile tip member 27 includes a cylindrical portion 27A and a spiral wing 27B. The cylinder portion 27A has a cylindrical shape with the same diameter as the pile body 26A. The spiral blade 27B is formed in a spiral shape on the outer peripheral surface of the cylindrical portion 27A, in which a part of an annular flat plate is cut along the radial direction, and the cut end is separated in the vertical direction 7. . In addition, the pile tip member 27 may have a spiral blade in addition to the spiral blade 27B, and may be generally used for a pile tip of a steel pipe pile.

  The ground 11 has a natural ground 21 that is a hard layer and an embankment 22 that is a soft layer. As shown in FIG. 3B, the natural ground 21 has an inclined surface 21A, and a stone wall 23 extending in the vertical direction is provided below the inclined surface 21A. The embankment 22 is embedded in the gap between the natural ground 21 and the stone wall 23 to the same height as the upper end 23 </ b> A of the stone wall 23. The ground 11 is an example of the ground, and the ground in which the present structure is adopted includes a soft ground that is naturally formed such as a valley bottom plain and a soft ground that is artificially formed such as embankment. Further, the height of the stone wall 23 and the thickness along the front-rear direction 8 are appropriately adjusted, and the stone wall 23 may not be provided.

  As shown in FIGS. 1, 5, and 7, the frame 13 is formed by annularly forming a metal such as iron, stainless steel, or aluminum. In the present embodiment, the frame 13 is composed of two substantially L-shaped frame pieces 13A and 13B, and has a substantially square shape in plan view. The frame pieces 13A and 13B are made of steel. Note that the frame 13 is not limited to a square in plan view, and may be a circle or other polygons.

  The peripheral wall 32 of the frame 13 includes a front surface portion 32A, a left side surface portion 32B, a back surface portion 32C, and a right side surface portion 32D. The front surface portion 32A and the left side surface portion 32B are continuous and constitute a frame piece 13A that is a substantially L-shaped steel material. Similarly, the back surface portion 32C and the right side surface portion 32D are continuous and constitute the frame piece 13B. The frame pieces 13A and 13B are integrated by welding the end portion of the front surface portion 32A and the end portion of the right side surface portion 32D, and the end portion of the left side surface portion 32B and the end portion of the back surface portion 32C.

  Note that the length of the frame 13 in the vertical direction 7 is appropriately changed according to the length of the convex portion 28 along the vertical direction and the position connected to the pile 12. The material of the frame 13 is not limited to metal, and the frame 13 may be, for example, wooden. Since the frame 13 is filled with soil as will be described later, the surface is preferably plated for anticorrosion.

  The front surface portion 32 </ b> A has a screw hole 33 </ b> A extending in the front-rear direction 8 at the center in the up-down direction 7 and the left-right direction 9. The back surface portion 32 </ b> C has a screw hole 33 </ b> C extending along the front-rear direction 8 at the center in the up-down direction 7 and the left-right direction 9. The left side surface portion 32 </ b> B has a screw hole 33 </ b> B extending in the left-right direction 9 at the center in the up-down direction 7 and the front-rear direction 8. The right side surface portion 32 </ b> D has a screw hole 33 </ b> D extending along the left-right direction 9 at the center in the up-down direction 7 and the front-rear direction 8.

  Each of the screw holes 33A, 33B, 33C, and 33D can be screwed with the bolt 14 or the bolt 15. The positions of the screw holes 33A, 33B, 33C, and 33D in each part are not particularly limited, but the screw holes 33A, 33B, 33C, and 33D are connected to the piles 12 arranged inside the frame 13 with their positions. Since the positions of the bolts 14 and 15 with which the tips abut are determined, as shown in FIGS. 1, 5, and 7, it is preferable that the bolts 14 and 15 are arranged at the center of each part. Further, the number of screw holes provided in the frame 13 is not limited to four, and may be less than four or five or more. The screw holes 33A, 33B, 33C, and 33D may be simple through holes instead of screw holes. In the case of the through-hole, the bolts 14 and 15 are fixed to the respective parts by arranging the nuts so as to sandwich the respective parts.

  The head of the bolt 14 is a flat plate 35 as shown in FIGS. A through hole 37 penetrating in the thickness direction is formed in the center of the flat plate 35. The screw part 36 is connected to the flat plate 35 by welding, and protrudes along the longitudinal direction from the center of the short end of the flat plate 35 in the longitudinal direction. The bolt 14 is an example of the present invention, and may be a rod that is not threaded instead of the screw portion 36. Further, the bolt 14 may not have the flat plate 35.

  The bolt 15 is a hexagon bolt as shown in FIGS. The bolt 15 is an example of the present invention and is not limited to a hexagon bolt.

  The connecting member 16 is, for example, a building turnbuckle. As shown in FIGS. 1 and 8, the connecting member 16 includes a barrel 41 having female screws 41 </ b> A and 41 </ b> B at both ends, and male screws 42 </ b> A and 43 </ b> A that are screwed into the female screws 41 </ b> A and 41 </ b> B of the barrel 41, respectively. It has the battledore bolts 42 and 43 to which the battledore plates 42B and 43B are connected. Through holes 42C and 43C are provided in the battledore plates 42B and 43B, respectively. The female screws 41A and 41B are threaded in directions opposite to each other (therefore, the male screws 42A and 43A are also the same), and the barrel 41 is rotated with respect to the feather plate bolts 42 and 43, so The distance between 43B can be adjusted. In addition, the connection member 16 is an example of this invention and is not restricted to the turnbuckle for construction.

  The foundation 17 is a solid foundation as shown in FIG. The foundation 17 is not limited to a solid foundation, and may be a cloth foundation or other types of foundations.

  The plurality of piles 12 are driven into the ground 11 as shown in FIGS. 1 to 3. Each pile 12 is driven to a depth at which the spiral wings 27 </ b> B are buried in the natural ground 21. In addition, the position of the spiral wing 27B of the pile 12 is appropriately changed according to the position of the support layer such as the natural ground 21.

  The upper ends of the piles 12 are buried in the ground 11 as shown in FIG. Therefore, the convex portion 28 is buried in the ground 11.

  As shown in FIGS. 1 and 2, the frame 13 surrounds the pile 12 so that the upper end portion of the pile 12 is located at the center of the opening 31 of the frame 13 in the front-rear direction 8 and the left-right direction 9. The position of the pile 12 with respect to the frame 13 is fixed when the tips of the bolts 14 and 15 screwed into the screw holes 33 of the frame 13 in contact with the outer peripheral surface of the pile 12 in the above-described state.

  In FIG. 1, the bolt 14 is screwed into the screw holes 33B and 33D, and the bolt 15 is screwed into the screw holes 33A and 33C, but the bolts 14 and 15 and the screw holes 33 (33A, 33B, 33C, The combination of 33D) is not limited to this. Also, any of the screw holes 33 (33A, 33B, 33C, 33D) may not be combined with any of the bolts 14 and 15. Further, the number of the bolts 14 and 15 is not limited to two, and only the bolt 14 may be used. Further, the bolt 14 or 15 may be tightened by a nut between the pile 12 and the frame 13. Moreover, as shown in FIG. 12, the pile 12 is not necessarily in the center of the opening 31 of the frame 13. The position of the pile 12 in the opening 31 is appropriately adjusted according to the thickness of the pile 12.

  As shown in FIG. 1, the convex portion 28 of the pile 12 includes corners of the frame 13 formed by the left side surface portion 32B and the back surface portion 32C, and corners of the frame 13 formed by the front surface portion 32A and the left side surface portion 32B. And a gap 34 (34A, 34B) formed between the pile 12 and the pile 12. The position of the convex portion 28 is an example of the present invention, and the corner of the frame 13 formed by the front surface portion 32A and the left side surface portion 32B and the corner of the frame 13 formed by the back surface portion 32C and the right side surface portion 32D. It may be a gap generated between the stake and the pile 12, or may be another place.

  The connecting member 16 connects the piles 12 adjacent to each other via a frame 13 and a bolt 14. Specifically, the through hole 42C of the battledore bolt 42 is overlapped with the through hole 37 of the bolt 14, and the battledore bolt 42 and the flat plate 35 are fastened by the bolt 44 and the nut 45 to be connected to the bolt 14. In addition, the connection aspect of the battledore bolt 42 and the flat plate 35 is not limited to what uses the bolt 44 and the nut 45. FIG.

  The connecting member 16 has a through hole 43C overlapped with the through hole 37 of the bolt 14 of the pile 12 adjacent to the pile 12 on the side of the blade plate bolt 42, and the hung plate bolt 43 and the flat plate 35 are tightened with the bolt 44 and the nut 45 to thereby tighten the bolt. 14. In addition, the connection aspect of the battledore bolt 43 and the flat plate 35 is not limited to the one using the bolt 44 and the nut 45.

  In addition, the connection of the piles 12 by the connection member 16 does not necessarily need to be performed with respect to all the piles 12. Moreover, as FIG. 2 shows, the three piles 12 adjacent to each other may be mutually connected. Moreover, in the adjacent pile 12, when the position of the up-down direction 7 of each upper end differs, the pile 12 from which the position of an upper end differs is connected by arrange | positioning the connection member 16 diagonally along the up-down direction 7. May be.

  As shown in FIG. 3B, the foundation 17 is provided on the pile 12 and supported by the pile 12. The foundation 17 is supported by the pile 12 by the bottom surface of the foundation 17 coming into contact with the upper surface of the pile 12. The upper end of the pile 12 is not inserted into the foundation 17. A part of the foundation 17 may not be supported by the pile 12.

[Construction method 50]
Next, with reference to FIG. 11, the construction method 50 of the foundation structure 10 of a house shown by FIGS. 1-3 (A) and (B) is demonstrated. The construction method 50 includes a first process 51 to a sixth process 56.

  The first step 51 is a step of driving a plurality of piles 12 into the ground 11.

  The pile 12 is arrange | positioned according to the shape of the foundation 17, etc., as FIG. 3 (A) shows. After the pile 12 is positioned at each position on the ground, it is rotationally press-fitted into the ground 11 by a heavy machine 29 (not shown). Specifically, the pile main body 26A (see FIG. 4) is chucked by attaching the upper end portion of the pile main body 26A and the convex portions 28A and 28B to the heavy machine 29 after the pile tip member 27 is attached. . Then, the pile main body 26 </ b> A is rotated by the heavy machinery 29, and the pile 12 is inserted into the embankment 22 by being pushed vertically downward.

  When the pile main body 26A is inserted into the embankment 22 until the vicinity of the upper end thereof approaches the ground, the pile main body 26B (see FIG. 4) is connected to the upper end of the pile main body 26A. The pile main body 26B is penetrated into the ground by the heavy machinery 29 in the same manner as the pile main body 26A in a state of being connected to the pile main body 26A. When the pile tip member 27 reaches the natural ground 21, the penetration of the pile body 26B is completed. In the pile main body 26B, a portion protruding upward from the ground is cut and removed as necessary.

  The second step 52 is a step of providing the groove 58 in the ground 11 between the adjacent piles 12. As shown in FIGS. 9 and 10, the groove 58 is formed by excavating the embankment 22 up to a position deeper than the position where the frame 13 is fixed to the pile 12. The soil around the tip of the pile 12 is also removed to the same depth as the groove 58.

  The third step 53 is a step of connecting the frame 13 to the upper end portion of the pile 12. As shown in FIGS. 1 and 7, the frame 13 has two bolts 14 screwed into the screw holes 33B and 33D and two bolts 15 screwed into the screw holes 33A and 33C from the outside to penetrate through the bolts. The front end surface 14 </ b> A of 14 and the front end surface 15 </ b> A of the bolt 15 are in contact with the outer peripheral surface 39 of the pile 12, thereby being fixed to the upper end portion of the pile 12.

  The fourth step 54 is a step of attaching the connecting member 16 to the bolt 14. As shown in FIGS. 1 and 8, the connecting member 16 is positioned in the groove 58, and the through holes 42 </ b> C and 43 </ b> C are respectively overlapped with the through holes 37 of the bolts 14, and the wing plate bolt 42, the flat plate 35, and the wing plate bolt 43. The flat plate 35 is connected to the bolt 15 by being fastened by a bolt 44 and a nut 45, respectively.

  The fifth step 55 is a step of refilling the groove 58 with the soil 59 to the same height as the upper end surface 12 </ b> A of the pile 12. As shown in FIG. 10, the height of the upper end surface 12 </ b> A is lower than the ground level 60. Moreover, the soil around the upper end of the pile 12 is also backfilled.

  The sixth step 56 is a step of placing the foundation 17 on the pile 12. As shown in FIG. 3 (B), a solid foundation is placed.

[Effects of the embodiment]
In this embodiment, since the several pile 12 is connected by the connection member 16 via the frame 13 and the volt | bolt 14, the distance between the piles 12 does not fluctuate. For this reason, even when a part of the ground 11 collapses, the pile 12 exposed from the collapsed ground 11 is supported by the surrounding pile 12, and the movement of the pile 12 exposed from the ground 11 is suppressed. As a result, the foundation 17 can be prevented from tilting or sinking.

  Moreover, if the three piles 12 adjacent to each other are connected to each other by the connecting member 16, the resistance to the horizontal force is further increased in each pile 12.

  Moreover, since the length of the connection member 16 is adjustable, the piles 12 whose intervals are not constant can be connected by adjusting the length of the connection member 16.

  Further, even if the convex portions 28C and 28D are provided on the upper end portion of the pile 12, the convex portions 28C and 28D are arranged on the diagonal line of the frame 13, whereby the outer shape of the frame 13 is combined with the convex portions 28C and 28D. Thus, the convex portions 28C and 28D can be accommodated inside the frame 13 without increasing the distance between the front surface portion 32A, the back surface portion 32C, the left side surface portion 32B, and the right side surface portion 32D. .

  Moreover, since the upper end part of the pile 12 can be connected after driving the pile 12 in the ground 11 and before driving the foundation 17 on the pile 12, construction is easy.

[Modification]
The piles 12 may have different thicknesses. At that time, the position of the pile 12 in the frame 13 is adjusted as shown in FIG. 12, and one bolt 14 or 15 may be omitted accordingly. In the above-described embodiment, as shown in FIG. 12A, the diameter of the pile 12 is 139.8 mm, but the diameter of the pile 12 shown in FIGS. 12B and 12C is 114.3 mm and 101.6 mm, respectively, both of which are commonly found in steel pipe piles for residential use.

  Moreover, the pile main body 26B may not be joined to the pile 12 according to the depth of the natural ground 21, and the cylindrical pile main body may be joined on the coaxial line. Moreover, a pile main body may be cut | disconnected in the middle. In that case, a convex part will not exist in the upper end part of the pile 12. FIG.

  In the above-described embodiment, the rectangular frame 13 in plan view is used, but a frame in plan view different from this may be adopted. For example, as shown in FIG. 13, a frame 61 having a circular plan view may be used. The detail near h, the frame 61 is composed of frame pieces 61A and 61B, and the frame pieces 61A and 61B have connecting portions 62A, 62B, 62C and 62D and flat projections 63A, 63B, 63C and 63D, respectively. The connecting portions 62A, 62B, 62C, and 62D have through holes 64A, 64B, 64C, and 64D, respectively, the bolt 65A passes through the through holes 64A and 64C, the bolt 65B passes through the through holes 64B and 64D, and the nut 66A. , 66B, the frame piece 61A and the frame piece 61B are connected. At that time, the pile 12 may have convex portions 28C and 28D between the frame piece 61A and the frame piece 61B. The protrusions 63A, 63B, 63C, and 63D have through holes 67A, 67B, 67C, and 67D, respectively, and the frame 61 is connected to the connecting member 16 as necessary.

DESCRIPTION OF SYMBOLS 10 ... Housing basic structure 11 ... Ground 12 ... Pile 13 ... Frame 14 ... Bolt 15 ... Bolt 16 ... Connection member 17 ... Foundation 28 ... Convex part 39 ... Outer peripheral surface 50 ... Construction method 51 ... First step 52 ... Second step 53 ... Third step 54 ... Fourth step 55 ... Fifth step 56 ...・ 6th process

Claims (4)

With multiple piles driven into the ground,
An annular frame connected to the pile and surrounding the upper end of the pile;
A connecting member that connects the plurality of frames;
A foundation structure of a house having a foundation supported by upper ends of the plurality of piles ,
The above frame is
A plurality of bolts that are screwed into the frame and project from the frame are connected to the pile by contacting the pile,
The connecting member is a basic structure of a house connected to the bolt. The foundation structure of a house according to claim 1 , wherein the frames respectively connected to the three adjacent piles are connected to each other by the connecting member. The basic structure of a house according to claim 1 or 2 , wherein the connecting member is a bar whose length in the longitudinal direction can be changed. The pile has a convex portion protruding from the outer peripheral surface of the upper end portion,
The basic structure of a house according to any one of claims 1 to 3 , wherein the frame is a polygonal ring.

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