Foundation construction apparatus

Abstract

To provide a construction device of a foundation structure capable of suitably placing concrete for footing and concrete for a foundation beam at the same time.SOLUTION: A construction device of a foundation structure includes a footing frame 51 for forming a footing 71, a fixing plate 55 extending horizontally and indicating an upper end of the footing 71, and a foundation beam floating frame 61 placed on the fixing plate 55 and forming a foundation beam.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to a construction device for a foundation structure that includes a footing frame, a fixing plate that indicates the upper end of the footing, and a foundation beam floating frame that is placed on the fixing plate. [Background technology]

[0002] In the construction of a foundation structure, a footing is first formed, and then a foundation beam is formed on top of it. Conventionally, the footing is formed using concrete, and after the concrete has sufficiently hardened, a floating frame for the foundation beam is placed on the footing and concrete is poured again. Patent Document 1 describes an example of such construction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-293373 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional construction, the concrete for the footing is poured after the concrete for the foundation beam has hardened, so the footing and the foundation beam harden as separate bodies, reducing their integrity.

[0005] Furthermore, because there is a time limit from mixing concrete to the end of pouring, when transporting concrete to a work site using a pump truck, it is difficult to transport both the concrete for the footing and the concrete for the foundation beams in one operation. Therefore, it is necessary to first prepare the concrete for the footing using a pump truck, and then prepare the concrete for the foundation beams using a pump truck again.

[0006] Furthermore, it is possible to install the floating frame of the foundation beam on top of the floating frame for the footing in advance, but it is difficult to adjust the height of the floating frame of the foundation beam and also difficult to fix the lower part of the floating frame of the foundation beam, so there is room for further improvement. [Means for solving the problem]

[0007] The foundation structure construction device according to one embodiment of the present invention comprises: A footing frame for forming a footing, and a fixing plate extending horizontally and indicating the upper end of the footing; and a foundation beam floating frame placed on the fixed plate to form a foundation beam.

[0008] The foundation structure construction device according to one embodiment of the present invention comprises: a step of installing a footing frame to form a footing; installing a horizontally extending fixing plate that marks the upper end of the footing; and placing a foundation beam floating frame for forming a foundation beam on the fixed plate. [Effects of the Invention]

[0009] According to the foundation structure construction device of the present invention, concrete for footings and concrete for foundation beams can be preferably poured simultaneously. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic external view of a building 1. [Figure 2] 10 is a flowchart showing part of the construction procedure. [Figure 3] FIG. 10 is a diagram showing the state at the end of step S3. [Figure 4] FIG. 10 is a diagram showing the state at the end of step S4. [Figure 5] FIG. 10 is a diagram showing the state at the end of step S6. [Figure 6] FIG. 6 is a partially enlarged view of FIG. 5 as viewed in the +X direction. [Figure 7] FIG. 10 is a diagram showing the state at the end of step S7. [Figure 8] FIG. 10 is a diagram showing the state at the end of step S8. [Figure 9] FIG. 10 is a diagram showing the state at the end of step S9. [Figure 10] 10 is a diagram showing a support structure 150 according to a second embodiment. FIG. [Figure 11] 10A and 10B are diagrams showing a specific configuration of a support structure 150. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] First Embodiment A first embodiment of the present invention will be described below with reference to the drawings. In the drawings, for convenience of explanation, directions in space are indicated using three axes, XYZ. In particular, the Z direction corresponds to the direction of gravity (vertical direction), the +Z direction indicates an upward direction, and the -Z direction indicates a downward direction. The X direction and the Y direction are both perpendicular to the Z direction, i.e., correspond to the horizontal direction. The X direction and the Y direction are perpendicular to each other. Note that the X direction is not limited to the direction shown in the drawings and can be any direction within a horizontal plane, and the Y direction can also be any direction accordingly.

[0012] Referring to FIG. 1, a schematic external view of a building 1 is shown. The building 1 includes a foundation 3 and a main body 5. The foundation 3 is a concrete-containing foundation structure formed below ground level. The main body 5 is, for example, a warehouse built on the ground and supported by the foundation 3. The main body 5 includes a framework 11, exterior walls 13, and a roof 15. The framework 11 includes a plurality of steel columns 21 extending in the +Z direction from the foundation 3 and a plurality of steel beams 23 extending in the X and Y directions between the plurality of steel columns 21. The steel columns 21 and the steel beams 23 are, for example, H-shaped steel. Note that the steel columns 21 and the steel beams 23 may also be square columns. The exterior wall 13 is, for example, metal siding arranged on the side surface on the -Y side of the main body 5. The roof 15 is provided on top of the main body 5 to prevent raindrops and the like from entering the main body 5.

[0013] 2, there is shown a flowchart illustrating a part of the construction procedure. This flowchart shows a specific example of the foundation structure construction method according to this embodiment.

[0014] In step S1, the ground is compacted (compaction step). In step S2, basal concrete 31 shown in Fig. 3 is poured (basal concrete pouring step). After the basal concrete 31 has hardened, in step S3, anchors 32 are set (anchor setting step).

[0015] Referring to Figure 3, the state at the end of step S3 is shown. Figure 3 is a partially enlarged view of the state during construction in range A in Figure 1 (the same applies to Figures 4, 5, and 7 to 10 described below). The anchor 32 has a bottom 33, legs 34, and an upper part 35. The bottom 33 is a substantially square flat plate member. The legs 34 are columnar members with a V-shaped cross section that extend upward from the bottom 33. The upper part 35 is also a substantially square flat plate member like the bottom 33. The bottom 33, legs 34, and upper part 35 are, for example, welded to each other.

[0016] The anchor 32 has a bottom 33 set into the basal concrete 31 by, for example, a nail. The anchor 32 may have a rod-shaped leg 34 that is set directly into the basal concrete 31 without the bottom 33, or may have an upper part 35 that is adjustable in height.

[0017] In step S4, reinforcing bars 41 are placed in the basing concrete 31 (foundation / underground beam reinforcement arrangement process). FIG. 4 shows the state at the end of step S4. Reinforcing bars 41 can have a known structure and include, for example, base reinforcement 43, foundation beam reinforcing bars 45, column main reinforcement, stirrup reinforcement, etc. As an example, the base reinforcement 43 is formed in a lattice pattern so as to be parallel to the basing concrete 31. The base reinforcement 43 is placed at a position raised a predetermined distance above, for example, by corner stones (not shown). The foundation beam reinforcing bars 45 are placed on top of the base reinforcement 43. Note that in figures other than FIG. 4, the base reinforcement 43 is scaled down or not shown for the sake of convenience.

[0018] In step S5, the footing frame 51 shown in FIG. 5 etc. is installed (footing frame installation process). In addition, in step S6, the fixing plate 55 is installed (fixing plate installation process). Referring to FIG. 5, the state at the end of step S6 is shown. Also, referring to FIG. 6, a partially enlarged view of FIG. 5 as viewed in the +X direction is shown. The construction device according to this embodiment includes the footing frame 51 and the fixing plate 55. A plurality of fixing plates 55 are arranged.

[0019] The footing frame 51 functions as a floating frame for forming the footing (more specifically, a floating frame for containing concrete for forming the footing). The footing frame 51 is made of wood, for example, but may be made of other materials. Crosspieces 53 are fixed to the footing frame 51.

[0020] The crosspieces 53 are attached to the lower part of the footing frame 51, and are preferably attached to the lower edge of the side of the footing frame 51 so as to be flush with the underside of the footing frame 51. The crosspieces 53 can be fixed to the footing frame 51 prior to step S5, but the fixing work may be performed in step S5. In step S5, two footing frames 51 are erected facing each other with the crosspieces 53 facing outwards.

[0021] The fixing plates 55 are, for example, long, thin metal plates that can be bent by applying force. Fixing members 57 (for example, nails) fix the fixing plates 55 to the footing frames 51. The fixing plates 55 may have through holes (not shown) through which the fixing members 57 can be inserted. Each fixing plate 55 is fixed near both ends to the corresponding footing frames 51 by the fixing members 57. This fixes the two opposing fixing plates 55 to each other and stabilizes them on the basing concrete 31. A plurality of fixing plates 55 are provided for each set of footing frames 51.

[0022] In the example of Fig. 5, the footing frames 51 are arranged parallel to the XZ plane, with their longitudinal direction in the X direction. The fixing plates 55 have connecting portions 55a (Fig. 6) that are the portions between the two footing frames 51. The connecting portions 55a are attached so as to extend parallel to the XY plane, i.e., horizontally, and in the example of Fig. 5, they are attached so that the longitudinal direction of the connecting portions 55a is perpendicular (Y direction) to the longitudinal direction (X direction) of the footing frames 51. In one example, the connecting portions 55a of all the fixing plates 55 are arranged so as to be on the same plane.

[0023] The fixing plate 55 is attached at an appropriate height so as to indicate the upper end of the footing. That is, in a later step S8, concrete is poured so that the height of the upper end of the footing coincides with the position of the fixing plate 55.

[0024] In this embodiment, it is assumed that a continuous footing foundation will be formed, and for example, the footing frame 51 extends in the X direction, but it is also possible to form an independent footing foundation. In that case, the shape, number, connection structure, etc. of the footing frame 51 can be changed appropriately depending on the shape of the independent footing foundation.

[0025] In step S7, the foundation beam floating frame 61 is installed (foundation beam floating frame installation process). Referring to FIG. 7, the state at the end of step S7 is shown. The foundation beam floating frame 61 functions as a floating frame for forming the foundation beam (more specifically, a floating frame for containing concrete for forming the foundation beam), and is arranged to surround the reinforcing bars 41. The foundation beam floating frame 61 is made of wood, for example, but may be made of other materials. The construction device according to this embodiment is equipped with the foundation beam floating frame 61.

[0026] Crosspieces 63 are fixed to the foundation beam floating frame 61. The crosspieces 63 are attached to the lower part of the foundation beam floating frame 61, and are preferably attached to the lower edge of the side of the foundation beam floating frame 61 so as to be flush with the underside of the foundation beam floating frame 61. The crosspieces 63 can be fixed to the foundation beam floating frame 61 prior to step S7, but the fixing work may also be performed in step S7.

[0027] Here, as described above, multiple fixing plates 55 are arranged to connect the footing frames 51, so the foundation beam floating frames 61 can be placed on the fixing plates 55. Therefore, it is possible to install the foundation beam floating frames 61 before pouring the footing concrete.

[0028] The foundation beam floating frame 61 may be fixed to the fixing plate 55. Any fixing method may be used, but for example, it may be fixed via a batten 63 using a fixing member (not shown) such as a nail. As a specific example, a nail may be driven downward from above the batten 63 at the portion where the fixing plate 55 and the batten 63 overlap when viewed from above, thereby fixing the batten 63 to the fixing plate 55. In this way, the foundation beam floating frame 61 is indirectly fixed to the fixing plate 55 via the batten 63.

[0029] In step S8, concrete for the footing is poured (footing concrete pouring step). Referring to Figure 8, the state at the end of step S8 is shown. The concrete for the footing is poured on top of the basin concrete 31 and inside the footing frame 51 (i.e., below the reinforcing bars 41) to form the footing 71.

[0030] As described above, the upper end 71a of the footing 71 is formed at the height of the fixed plate 55. Here, "the height of the fixed plate 55" means the height of the upper surface of the fixed plate 55, for example.

[0031] In step S9, concrete for the foundation beams is poured (foundation beam concrete pouring process). Referring to Figure 9, the state at the end of step S9 is shown. The concrete for the foundation beams is poured on the footings 71 and between the foundation beam floating frames 61 (i.e., around the reinforcing bars 41) to form the foundation beams 73.

[0032] Here, the waiting time after the end of step S8 until the start of step S9 only needs to be long enough for the surface of footing 71 to harden to a certain extent, and it is not necessary to wait until the entire footing 71 has completely hardened.

[0033] As described above, the foundation structure construction device according to this embodiment allows the foundation beam floating frame 61 to be easily positioned at a higher position than the footing frame 51. This construction device thus advantageously allows the concrete for the footing and the concrete for the foundation beam to be poured simultaneously. Note that "simultaneously" here does not necessarily mean that all work is carried out at the same time, but also includes cases where there is a time lag between pouring work, as long as mixing work can be completed at the same time. For example, after the completion of step S8, a waiting time of several tens of minutes, or even 45 minutes to an hour, is sufficient before the start of step S9. However, the appropriate waiting time varies depending on the weather, temperature, humidity, seasonal factors, etc., at the time of pouring. Therefore, the above time is merely a guideline, and the actual waiting time will vary depending on the situation in which the concrete for the footing is being poured.

[0034] Furthermore, in this embodiment, there is no need to support the foundation beam floating frame 61 with the concrete of the footing 71, so it is sufficient for the concrete of the footing 71 to support the concrete of the foundation beam 73 (particularly, to the extent that the concrete of the foundation beam 73 does not flow out of the foundation beam floating frame 61). For this reason, it is sufficient for the upper surface of the footing 71 to harden to the extent that the concrete of the foundation beam 73 does not flow out from between the upper surface of the footing 71 and the lower edge of the foundation beam floating frame 61, and there is no need to wait until the entire footing 71 has completely hardened. Therefore, compared to conventional construction, the waiting time between pouring the concrete of the footing 71 in step S8 and pouring the concrete of the foundation beam 73 in step S9 can be shortened.

[0035] Furthermore, according to this embodiment, the concrete of the foundation beams 73 is poured before the concrete of the footing 71 has completely hardened, so the footing 71 and the foundation beams 73 harden as a single unit, thereby enhancing their unity.

[0036] Furthermore, while there is a time constraint from mixing concrete until completion of pouring, this embodiment makes it easy to avoid this constraint. That is, in conventional construction, it was difficult to deliver the concrete for the footing and the concrete for the foundation beams in one operation, but with this embodiment, the waiting time is shortened, so the concrete for the footing 71 and the concrete for the foundation beams 73 can be delivered in one operation.

[0037] Furthermore, in this embodiment, the foundation beam floating frame 61 is disposed on the fixing plate 55, so that the foundation beam floating frame 61 (particularly its lower part) can be easily fixed. Also, by adjusting the height position of the fixing plate 55, the height of the foundation beam floating frame 61 can be easily adjusted.

[0038] As explained above, the foundation structure construction device according to one embodiment of the present invention comprises the footing frame 51 for forming the footing 71, the fixed plate 55 that extends horizontally and indicates the upper end 71a of the footing 71, and the foundation beam floating frame 61 that is placed on the fixed plate 55 and forms the foundation beam 73. Therefore, the foundation beam floating frame 61 can be installed before the concrete of the footing 71 hardens, and the concrete for the footing and the concrete for the foundation beam can be preferably poured simultaneously.

[0039] In the foundation structure construction device according to one embodiment of the present invention, the fixing plate 55 is fixed to the footing frame 51. This makes the fixing plate 55 stable and allows it to more firmly support the foundation beam floating frame 61.

[0040] In the foundation structure construction device according to one embodiment of the present invention, the foundation beam floating frame 61 is fixed to the fixing plate 55. This makes the foundation beam floating frame 61 more stable.

[0041] Second Embodiment In the second embodiment, a support structure for supporting the foundation beam floating frame 61 is added to the first embodiment.

[0042] 10 shows a support structure 150 according to a second embodiment. In the second embodiment, the construction device includes the support structure 150. The support structure 150 includes a bracket 151, a fixing bolt 152, and an adjustment bolt 153 (bolt).

[0043] 11 shows a specific configuration of the support structure 150. The bracket 151 is made of, for example, metal and includes a connecting portion 151a, a lower end 151b, and an upper end 151c. The connecting portion 151a connects the lower end 151b and the upper end 151c.

[0044] The lower end 151b is placed in contact with the basal concrete 31. A through-hole (not shown) is formed in the lower end 151b, and a fixing bolt 152 passes through this through-hole and screws into a bolt hole in the basal concrete 31, thereby fixing the bracket 151 to the basal concrete 31. Note that the bracket 151 may also be fixed by placing the lower end 151b on the base reinforcement 43 (see FIG. 4) and welding it. The fixing bolt 152 may also be another fixing member, such as a nail.

[0045] An adjustment bolt 153 is provided at the upper end 151c of the bracket 151. A bolt hole (not shown) is formed in the upper end 151c, and the adjustment bolt 153 screws into this bolt hole. The adjustment bolt 153 can be moved up and down by rotating while screwed into the bolt hole. In this way, the height position of the adjustment bolt 153 can be adjusted.

[0046] The support structure 150 is disposed in a position that supports the foundation beam floating frame 61. That is, when viewed from above, the positions of the adjustment bolts 153 of the support structure 150 are aligned with the foundation beam floating frame 61 and / or the battens 63. This allows the brackets 151 of the support structure 150 to support the lower ends of the foundation beam floating frame 61 via the adjustment bolts 153.

[0047] As described above, the foundation structure construction device according to one embodiment of the present invention comprises the bracket 151 that supports the lower end of the foundation beam floating frame 61, and the adjustment bolt 153 that is attached to the upper end 151c of the bracket 151 and is movable in the vertical direction. Therefore, even if the fixing plate 55 alone is not strong enough to support the weight of the foundation beam floating frame 61, the bracket 151 can assist in supporting the foundation beam floating frame 61 stably.

[0048] The position of the support structure 150 can be determined arbitrarily and can be appropriately changed depending on, for example, the shape and center of gravity of the foundation beam floating frame 61. Furthermore, when performing work related to the support structure 150 (for example, adjusting the vertical position of the adjustment bolt 153), the work can be easily performed because the support structure 150 can be positioned at a position that does not interfere with the fixed plate 55. [Explanation of symbols]

[0049] 51 Footing frame 55 Fixing plate 61 Foundation beam floating frame 71 Footing 71a Top of footing 73 Foundation beam 151 Bracket 151c Top of bracket 153 Adjustment bolt (bolt)

Claims

1. a footing frame for forming a footing; a fixing plate extending horizontally and indicating the upper end of the footing; a foundation beam floating frame placed on the fixed plate to form a foundation beam; A foundation structure construction device characterized by:

2. The fixing plate is fixed to the footing frame.

2. The foundation structure construction device according to claim 1.

3. The foundation beam floating frame is fixed to the fixing plate.

2. The foundation structure construction device according to claim 1.

4. A bracket supporting the lower end of the foundation beam floating frame; an adjustment bolt provided at the upper end of the bracket and movable in the up and down direction; The foundation structure construction device according to claim 1, further comprising:

5. a step of installing a footing frame to form a footing; installing a horizontally extending fixing plate that marks the upper end of the footing; and placing a foundation beam floating frame for forming a foundation beam on the fixed plate. A foundation structure construction method characterized by:

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