Support structure and method for constructing the same

Abstract

To provide a support structure which enables a water stop center pillar to which a water stop is mounted to be accurately and surely installed at a prescribed position.SOLUTION: A support structure B comprises: an upper structure B1 that supports a leg 23 provided in a lower frame 20 of a water stop center pillar A; and a lower structure B2 provided in a lower part of the upper structure B1. The upper structure B1 includes a tabular base plate 30 having an upper surface formed roughly flat. A plurality of through-holes 30a are formed in the base plate 30 so as to vertically penetrate it. The lower structure B2 includes a plurality of fastened members 31 inserted into the through-holes 30a formed in the base plate 30. By inserting and engaging a fastening member 80 into a plurality of fitting holes 20a formed in the lower frame 20 and the through-holes 30a formed in the base plate 30, the water stop center pillar A can be fixed to the base plate 30.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a support structure that supports, from below, a center post for a waterstop to which a waterstop is attached, and a method for constructing the support structure. [Background technology]

[0002] When rising water caused by a typhoon or torrential rain enters the opening of a building or an underground passage, it may cause serious damage due to flooding. In preparation for such an event, a water stop device is known in the art that permanently installs supports for mounting waterstops on both sides of the opening of a building or an underground passage, and when rising water occurs, the waterstops are attached to the permanent supports to block the opening and prevent water from entering. In such a water stop device, when the width of the opening is relatively large, a center pillar for the waterstop is erected between two waterstops adjacent to the left and right, and the two waterstops are connected and supported by this center pillar for the waterstop (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-184754 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional technology, the center column is fixed to the floor surface by screwing an anchor bolt inserted into a fixing through hole provided in the leg member of the center column. In this case, a fixing hole for screwing the anchor bolt into the floor surface is formed using a drilling machine or the like, but if the floor surface is formed with a slope for drainage, it is difficult to form the fixing hole vertically, and there are also cases where the fixing hole is not formed accurately in the specified position due to deviations when drilling with the drilling machine or the like. In such cases, when installing the center column, the anchor bolt may not be screwed in sufficiently or the center column may be installed in a misaligned position, which can result in the waterstop plate not being able to fully demonstrate its waterstop performance when attached to the center column.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a support structure that can accurately and reliably install a center post for a waterstop to which a waterstop is attached in a specified position, and a construction method for the support structure. [Means for solving the problem]

[0006] In view of the above problems, one aspect of the present invention has the following configuration. a lower structural part provided below the upper structural part and a lower structural part provided below the upper structural part, the upper structural part having a plate-shaped base plate with an upper surface formed into a substantially flat surface, the base plate having a plurality of through holes extending vertically, the lower structural part having a plurality of fastened members each having a female threaded portion formed in the base plate and each of the plurality of through holes formed in the base plate, the support structure being configured such that, with the legs of the lower frame supported on the upper surface of the base plate, a fastening member having a male threaded portion that can be screwed into the female threaded portion is inserted into a plurality of mounting holes formed in the lower frame and the plurality of through holes formed in the base plate, and the male threaded portion is screwed into the female threaded portion, thereby allowing the center pillar for the waterstop to be fixed to the base plate.

[0007] Another aspect of the present invention relates to the following method. The support structure construction method includes the steps of: chipping a portion of an immovable surface on which the waterstop center post is to be placed to form a concave chipped portion capable of accommodating the support structure; a main anchor installation step of arranging a plurality of main anchors in predetermined positions on a bottom surface of the chipped portion; a support structure installation step of accommodating the support structure in the chipped portion and fixing anchor materials provided in the lower structural portion to the main anchors; and a filling step of filling the chipped portion with a filling material. Effect of the Invention

[0008] Since the present invention is configured as described above, the center post for a waterstop can be installed accurately and reliably in a predetermined position. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic perspective view showing an example of a center post for a waterstop according to the present invention. [Diagram 2] FIG. 2 is a schematic perspective view showing a main part of the center pillar for the waterstop plate. [Diagram 3] FIG. 4 is a schematic front view showing an installation mode of the center pillar for the waterstop plate. [Figure 4] FIG. 4(a) is a schematic perspective view of an example of a support structure according to the present invention as viewed from above, and FIG. 4(b) is a schematic perspective view of the same support structure as viewed from below. [Diagram 5] FIG. 2 is an exploded schematic view illustrating the support structure. [Figure 6] 4A to 4C are explanatory diagrams of the steps of installing the support structure on a stationary surface. [Figure 7] FIG. 2 is a schematic perspective view showing the support structure installed on a stationary surface. [Figure 8] 1 is a schematic plan view showing the state in which a center post for a waterstop is supported on the support structure. FIG. [Figure 9] 13 is a side schematic view illustrating how a center post for a waterstop plate is fixed and supported by the support structure. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic perspective view showing an example of a center post for a waterstop according to the present invention, Fig. 2 is a schematic perspective view showing a main part of the center post for a waterstop, and Fig. 3 is a schematic front view showing an installation mode of the center post for a waterstop. In the following description, "upstream side" and "downstream side" refer to the upstream side and downstream side in the expected flow direction of the floodwaters.

[0011] (Middle pillar for water stop plate) As shown in Figures 1 to 3, the center column A for waterstop plates in this embodiment is integrally equipped with a center column main body 10 that supports the left and right waterstop plates 1, 2 in an upright state, a plurality of legs 23 that support the center column main body 10 in an upright state at its lower end and contact an immovable surface F such as a floor or ground, a watertight material 27 that maintains a watertight seal between the lower end side of the center column main body 10 in an upright state and the immovable surface F, a first rolling member 25 and a second rolling member 26 (see Figure 8) that support the center column main body 10 and can roll, and a first hand-held portion 16 and a second hand-held portion 17 located on the upper side of the center column main body 10 in an upright state.

[0012] As shown in Fig. 3, this waterstop center pillar A supports a plurality of waterstops 1, 2 on both the left and right sides in an upright state standing on an immovable surface F at the center of a structural opening in a building or the like. When storing this waterstop center pillar A, the waterstops 1, 2 on both the left and right sides are removed, and the first rolling member 25 and the second rolling member 26 of the waterstop center pillar A can be placed on the ground and moved to a storage location in an inclined state.

[0013] <Middle pillar body> The center column main body 10 is integrally equipped with a column portion 11 that continues in the vertical direction, an upper plate portion 12 fixed to the upper end of the column portion 11, a lower frame 20 that is fixed to the lower end of the column portion 11 and supports the column portion 11, and a waterstop plate engaged portion 14 that is fixed to the upstream side of the column portion 11 in the vertical direction and supports the left and right waterstop plates 1, 2.

[0014] [Column, upper plate] The pillar portion 11 is made of a hard metal material and has a hollow rectangular pillar shape that is continuous in the vertical direction. The upper plate portion 12 is a rectangular plate-shaped metal member that covers the upper end opening of the column portion 11, and is fixed by, for example, welding.

[0015] Bottom Frame The lower frame 20 is a metal plate-like member that covers the lower end opening of the column portion 11 in the upright state and supports the column portion 11, and is formed to be larger than the cross-sectional shape of the column portion 11. Specifically, as shown in Fig. 2, the lower frame 20 is formed in a roughly T-shape in plan view, having left and right lateral projections 21 that project in the width direction of the waterstop center column A, and a downstream projection 22 that projects downstream. The column portion 11 is attached vertically to the upper surface of this lower frame 20.

[0016] 2, a plurality of mounting holes 20a are formed penetrating vertically in the lower frame 20. In the illustrated example, a mounting hole 20a (20a1) consisting of an elongated hole is formed in each of the left and right lateral protrusions 21, and a mounting hole 20a (20a2) consisting of a round hole is formed in the downstream protrusion 22, and each mounting hole 20a is disposed at a position that becomes the apex of a triangle in a plan view with respect to the lower frame 20.

[0017] Each mounting hole 20a is disposed at a position communicating with three through holes 30a formed in a base plate 30 of a support structure B (see FIG. 5) described later, and the mounting holes 20a (20a1) of the left and right horizontal protrusions 21 are formed as elongated holes so that the positions of communication with the through holes 30a formed in the base plate 30 can be adjusted. Each mounting hole 20a may be a round hole or an elongated hole.

[0018] [leg] As shown in FIG. 2, the lower frame 20 is provided with three legs 23 so as to correspond to the lateral protrusions 21, 21 and the downstream protrusion 22, respectively. Each leg 23 has a threaded shaft portion 23a that is screwed into the lower frame 20 from below via a weld nut or the like, and a disk-shaped abutment portion 23b that is fixed to the lower end side of the threaded shaft portion 23a and contacts the fixed surface F.

[0019] According to this leg 23, the vertical height of the abutting part 23b can be changed by adjusting the screwing amount by rotating the leg 23. Furthermore, by appropriately adjusting the height of the three leg parts 23, the waterstop center pillar A can be made to stand substantially vertically on the base plate 30 of the support structure B (see FIG. 3).

[0020] [Water stop plate engaged part] 1 and 3, three sets of waterstop plate engaged parts 14 are provided in a vertical line on each of one half side and the other half side in the width direction on the upstream side of the column part 11. The three waterstop plates 1 located on the left side when viewed from the upstream side are respectively fastened to the three sets of waterstop plate engaged parts 14 on the one half side. Similarly, the three waterstop plates 2 located on the right side as viewed from the upstream side are fastened to the three sets of waterstop plate engaged portions 14 on the other half side, respectively.

[0021] Each waterstop engaged portion 14 is composed of a lower engaged portion 14a to which the lower engaging portion a of the waterstop 1 (or 2) engages, and an upper engaged portion 14b to which the upper engaging portion b of the waterstop 1 (or 2) engages.

[0022] As shown in Fig. 3, a lower engagement part a and an upper engagement part b for engaging with the waterstop center post A are provided at one end of each of the waterstops 1, 2, spaced apart in the vertical direction. Each of the lower engagement part a and the upper engagement part b is composed of a shaft-shaped member protruding from the end of the waterstop 1 (or 2) in the width direction, and a rotatable roller attached to the tip of this shaft-shaped member.

[0023] The lower engaged portion 14a protrudes upstream from the column portion 11 and is formed in a roughly horizontal L-shape in side view with its tip bent upward, and engages with the lower engaging portion a approaching from diagonally above the upstream side to prevent the lower engaging portion a from being easily disengaged. The upper engaged portion 14b is formed in a generally horizontally concave shape in a side view, with the upstream side open.

[0024] Each water stop 1 (or 2) is pressed downward by engaging the lower engaging portion a with the lower engaged portion 14a and then engaging the upper engaging portion b with the upper engaged portion 14b, and is pressed against the fixed surface F or the lower water stop 1 (or 2) via a watertight material not shown.

[0025] [Watertight material] The watertight material 27 is provided on the underside of the lower frame 20 so as to be pressed against the immovable surface F of the waterstop center pillar A in the upright state. This watertight material 27 is made of an elastic material such as rubber or elastomer resin and is formed in an elongated shape spanning the width direction of the waterstop center pillar A. According to the illustrated example, it is located on the upstream side of the underside of the lower frame 20, between the legs 23 on both sides in the width direction.

[0026] In the drawings, reference numeral 27a denotes a spacer member interposed between the watertight material 27 and the lower frame 20. It is also possible to omit this spacer member 27a and directly attach the watertight material 27 to the lower frame 20.

[0027] [Rolling parts] The first rolling member 25 is rotatably fixed to the lower end of the column portion 11 via a bracket 15. The first rolling member 25 is a roller-shaped member that can rotate with the width direction of the waterstop center column A as its axial direction, and is provided on one end side and the other end side of the center column body 10 in the width direction.

[0028] The axial center of each of the first rolling members 25 is located downstream of the center column body 10 and downstream of the multiple legs 23. When the center column body 10 is in an upright state, the first rolling members 25 secure a gap between themselves and the stationary surface F, and when the center column body 10 is in a state in which it is tilted downstream from the upright state, they come into rollable contact with the stationary surface F.

[0029] That is, in the upright state, the first rolling member 25 and the immovable surface F do not come into contact, and the multiple watertight materials 27 come into contact with the immovable surface F, and the watertight materials 27 elastically contract and are pressed against the immovable surface F. This prevents the entire waterstop center pillar A from shifting downstream due to water pressure, and also prevents water leakage (passage of water from upstream to downstream) from occurring below the waterstop center pillar A.

[0030] In addition, when the waterstop center pillar A is inclined, the multiple legs 23 and the watertight material 27 are separated from the immovable surface F, so that the first rolling member 25 can roll on the immovable surface F.

[0031] [bracket] The bracket 15 supporting each of the first rolling members 25 is a triangular plate-shaped hard metal member having one side supported by the upper surface of the lower frame 20 and the other side connected to the downstream side of the column 11. The bracket 15 supports the shaft portion of the first rolling member 25 by the portion protruding downstream. As another example, it is possible to adopt an embodiment in which the first rolling member 25 is supported by the lower frame 20, or an embodiment in which the first rolling member 25 is directly supported by the lower end portion of the column portion 11, etc.

[0032] [Second rolling member] The second rolling member 26 (see FIG. 8) is a single roller-shaped member, and is formed with a smaller diameter than the first rolling member 25. This second rolling member 26 is supported by the column part 11 so as to rotate, protruding downstream above the first rolling member 25, when the center column body 10 is in an upright state.

[0033] When the center pillar body 10 tilts from the upright state and the first rolling member 25 comes into contact with the immovable surface F and then further tilts, the second rolling member 26 comes into contact with the immovable surface F and becomes rollable. It is also possible to omit the second rolling member 26.

[0034] [First handle] The first handle 16 is an inverted concave member fixed to the upper plate 12 at the upper end of the center pole body 10. The first handle 16 is held from above when a worker or the like lifts up the center pole A for a waterstop.

[0035] [Second handheld part] The second hand-held portion 17 can be held from above, and is configured so that the vertical position of the holding portion 17a can be changed. The second hand-held portion 17 is integrally provided with a holding portion 17a held by the hand of an operator or the like, and a pair of support rods 17b that rotatably support the holding portion 17a, and the base end side of the support rods 17b is rotatably supported on the upper end side of the center pillar main body 10 in the upright state.

[0036] (Support structure) Next, the support structure B that supports the above-mentioned waterstop center pillar A from below will be described. Fig. 4(a) is a schematic perspective view of an example of the support structure according to the present invention as viewed from above, and Fig. 4(b) is a schematic perspective view of the support structure as viewed from below. Fig. 5 is a schematic view explaining the support structure in an exploded state.

[0037] As shown in FIGS. 4 and 5, the support structure B includes a base plate 30 constituting an upper structure portion B1, and a lower structure portion B2 provided below the base plate 30. As shown in FIG.

[0038] <Superstructure> The base plate 30 constituting the upper structural part B1 is formed of a plate-like metal plate such as stainless steel in a generally rectangular shape in plan view. The upper surface of the base plate 30 is formed to be a generally flat surface, and serves as a support surface for supporting the legs 23 provided on the lower frame 20 of the center pillar A for the waterstop described above. The base plate 30 is disposed horizontally in an area (location) on the immovable surface F where the center pillar A for the waterstop is to be disposed.

[0039] 5, the base plate 30 is formed with a plurality of through holes 30a penetrating vertically, and in the illustrated example, three through holes 30a are provided at three locations that are the vertices of a triangle in a plan view. The positions of these through holes 30a are such that they are inserted into the three mounting holes 20a (see FIG. 2(a)) formed in the lower frame 20 of the waterstop center pillar A.

[0040] When installing the center pillar A for the waterstop plate, each mounting hole 20a formed in the lower frame 20 of the center pillar A for the waterstop plate is connected to each through hole 30a formed in the base plate 30, and a fastening member 80 (see Figure 9) consisting of a fastening bolt or the like for fixing is inserted and screwed to install and fix the plate.

[0041] As shown in FIGS. 4 and 5, the plurality of through holes 30a formed in the base plate 30 are detachably provided with blocking members 40 capable of blocking each of the through holes 30a. This blocking member 40 is formed, for example, from a metal material or a synthetic resin material, and is attached to the through hole 30a formed in the base plate 30 when the center post A for the waterstop plate is not attached, and functions to block the intrusion of foreign matter such as dirt, sand, dust, etc., and water such as rainwater. When attaching the waterstop center post A, the blocking members 40 are removed from the through holes 30a of the base plate 30.

[0042] <Substructure> The lower structural part B2 of the support structure B includes a fastened member 31, a cover member 32, a bottom plate part 33, an anchor material 34, and a round bar 35. When this lower structural part B is installed on the immovable surface F, it is disposed in a buried state in the ground below the immovable surface F. The configuration of the lower structural part B2 will be described below.

[0043] [Parts to be fastened] As shown in FIG. 5, a fastened member 31 having a female thread portion, for example a weld nut, is attached and fixed to the underside of the base plate 30 by welding or the like so that its female thread hole 31a is inserted into a through hole 30a formed in the base plate 30.

[0044] The waterstop center post A can be fixed to the base plate 30 by inserting a fastening member 80 (see FIG. 9) having a male threaded portion 80a, such as a fastening bolt, through the mounting hole 20a formed in the lower frame 20 of the waterstop center post A and the through hole 30a formed in the base plate 30 and screwing (screwing) it into the fastened member 31. This allows the waterstop center post A to be fixed vertically upright on the base plate 30, which is placed horizontally.

[0045] [Cover material, bottom plate] 4 and 5, a cover member 32 formed in a cylindrical shape so as to surround the periphery of the fastened member 31 is disposed on the underside of the base plate 30. This cover member 32 is formed in a cylindrical shape, such as a cylindrical, elliptical cylindrical, triangular prism, square prism, or polygonal prism, using, for example, a metal material or a synthetic resin material. The opening at the upper end of the cover member 32 is joined to the lower surface of the base plate 30 by welding, adhesive, or the like, and the opening at the lower end is closed by, for example, a bottom plate portion 33 formed in a flat plate shape.

[0046] The cover member 32 and the bottom plate portion 33 form a reservoir portion that retains moisture such as rainwater that inevitably seeps in through the through-holes 30a of the base plate 30. This prevents moisture such as rainwater from leaking out into the lower structural portion B2 of the support structure B or into the ground below the immovable surface F, thereby preventing corrosion and rusting of the lower structural portion B2 made of a metal material and metal foundation members such as the main anchors arranged in the ground below the immovable surface F. The cover member 32 and the bottom plate portion 33 may be integrated into a cylindrical member with a bottom.

[0047] [Anchor material] As shown in Figures 4 and 5, a plurality of anchor materials 34 (three in the illustrated example) made of a metal plate shaped roughly in a U-shape when viewed from the side are provided at a predetermined interval on the underside of the base plate 30.

[0048] Each anchor material 34 has a pair of mounting members 34a extending in a substantially horizontal direction attached to the lower surface of the base plate 30, vertical members 34b extending substantially vertically downward from one end of each mounting member 34a, and a horizontal member 34c extending in a substantially horizontal direction connected to the lower end of each vertical member 34b. The anchor material 34 is integrally formed, for example, by bending a metal plate-like member or by joining the members 34a, 34b, 34c by welding or the like.

[0049] The pair of mounting members 34a form mounting portions that are fixed to the lower surface of the base plate 30 by a joining means such as welding. The vertical member 34b forms a joint portion that is joined to a main anchor 60 (see FIG. 6) driven into the ground below the immovable surface F via a reinforcing rod 61.

[0050] The horizontal member 34c supports the base plate 30 from below and serves as a reinforcing portion for reinforcing the base plate, while also supporting the bottom plate portion 33 located at the lower end of the cover member 32 from below, thereby functioning to maintain the upper end of the cover member 32 securely in contact with the lower surface of the base plate 30. In addition, on the upper surface of the horizontal member 34c of each anchor material 34, a plurality of reinforcing metal round bars 35 (e.g., reinforcing bars) are provided at predetermined intervals (two in the illustrated example) so as to straddle each anchor material 34 in order to increase the rigidity of the support structure B.

[0051] As described later, the anchor materials 34 and the round bars 35 are integrated with the filler 70 filled in the chipped portion 50 during construction of the support structure B, and function as structures to prevent the support structure B from slipping out of the immovable surface F and from rattling. The round bars 35 can also be omitted. The support structure B thus constructed is housed in the hanging portion 50 of the immovable surface F, as will be described later, and is installed immovably while maintaining a horizontal state.

[0052] (Construction method of support structure) Next, a description will be given of a construction method for installing the support structure B on the immovable surface F. Fig. 6 is an explanatory diagram of each step for installing the support structure on the immovable surface, and Fig. 7 is a perspective outline diagram showing the state in which the support structure is installed on the immovable surface.

[0053] The construction method for the support structure B according to this embodiment is carried out in the order of a chipping step, an anchor installation step, a support structure installation step, and a filling step. An example of each step will be described below.

[0054] <Chipping process> First, a chipping process is carried out on the area (location) where the waterstop center pillar A will be placed (see FIG. 6(a)). The chipping process is a process of chipping a part of the floor surface of the immovable surface F where the waterstop center pillar A will be placed, to form a concave chipped portion 50 capable of accommodating the support structure B. This chipping process can be carried out by, for example, scraping off the surface of the immovable surface F using a chipping tool such as a hammer drill.

[0055] The chipped portion 50 has, for example, an opening dimension larger than the vertical and horizontal lengths of the support structure B, and is formed with a depth dimension deeper than the vertical height of the support structure B (the height dimension from the upper surface of the base plate 30 to the lower surface of the anchor material 34). The opening dimensions and depth dimensions of the chipping portion 50 can be set to appropriate dimensions taking into consideration the capacity to accommodate the support structure B and the ease of installation (installation of the main anchor 60, welding to the main anchor 60, etc.).

[0056] <Main anchor installation process> Next, a main anchor installation process is performed (see FIG. 6(b)). The main anchor installation process is a process of disposing a plurality of main anchors 60 at predetermined positions on the bottom surface 50a of the chiseled portion 50. This main anchor installation process can be performed, for example, by drilling a plurality of holes (not shown) in the bottom surface 50a of the chiseled portion 50 using a drilling machine or the like, and driving the main anchors 60, which are, for example, anchor bolts, into the holes. A plurality of main anchors 60 are arranged so that, when the support structure B is accommodated in the chipped portion 50, the upper ends of the main anchors 60 are adjacent to the vertical members 34b of the anchor materials 34 of the support structure B.

[0057] <Support structure installation process> Next, the support structure installation process is performed (see FIG. 6(c)). The support structure installation process is a process of accommodating the support structure B in the chipped portion 50 of the immovable surface F and fixing the anchor material 34 of the support structure B to the main anchor 60. In this support structure installation process, the support structure B is accommodated in the chipped portion 50 and the vertical member 34b of the anchor material 34 and the upper end of the main anchor 60 are fixed by fixing means such as welding via a reinforcing rod 61 in a state in which the upper surface of the base plate 30 is horizontally arranged so as to be approximately flush with the upper surface (floor surface) of the immovable surface F. As a result, the support structure B is immovably installed on the immovable surface F while maintaining an approximately flush and horizontal state.

[0058] When the base plate 30 of the support structure B is arranged horizontally in the chipped portion 50, the horizontality of the base plate 30 may be adjusted using a level or the like. In order to arrange the upper surface of the base plate 30 horizontally so that it is approximately flush with the upper surface (floor surface) of the immovable surface F, for example, flat plate-shaped spacers (not shown) for adjusting height having various thicknesses may be arranged between the lower surface of the horizontal member 34c of the anchor material 34 and the bottom surface 50a of the chipped portion 50, and the support structure B may be temporarily supported by the spacers. Also, the support structure B may be configured to be fixed directly to the main anchor 60 by welding or other fixing means, without using the reinforcing bars 61.

[0059] <Filling process> Next, a filling step is performed (see FIG. 6(d)). The filling step is a step of filling the chipped portion 50 in which the support structure B is housed and fixed with a filler 70 made of, for example, mortar, concrete, or the like.

[0060] The filler 70 is poured so that it is approximately flush with the upper surface of the base plate 30 and the upper surface (floor surface) of the immovable surface F, and is filled so as to fill all areas of the base plate 30 except for the upper surface, leaving the upper surface of the base plate 30 exposed. As the filler 70 hardens, it becomes integrated with the support structure B. In particular, as the anchor materials 34 and the round bars 35 of the support structure B become integrated with the filler 70, it is possible to prevent the support structure B from slipping out of the immovable surface F and from rattling.

[0061] Through the above steps, the support structure B is maintained in a horizontal state with respect to the immovable surface F and is firmly and immovably installed (see FIG. 7).

[0062] (Center pillar installation process) Next, an installation process (procedure) for installing the waterstop center pillar A will be described. Fig. 8 is a schematic plan view showing the state in which the waterstop center pillar is supported by the support structure, and Fig. 9 is a schematic side view explaining how the waterstop center pillar is fixed and supported by the support structure.

[0063] In cases where flooding is predicted, etc., a waterstop center pillar A is installed upright at a specified position on the immovable surface F (the position where the support structure B is installed), and the waterstops 1 and 2 on both sides are supported by this waterstop center pillar A (see Figure 3). The waterstop center pillar A cooperates with the waterstops 1 and 2 to prevent water from passing through the opening in the structure.

[0064] The installation process for the center pillar A for the waterstop includes a moving and transporting process for moving and transporting the center pillar A for the waterstop stored in a storage location to a fixed surface F (on the support structure B), and an installation process for installing the center pillar A for the waterstop.

[0065] <Transportation process> When moving and transporting the waterstop center pillar A to the installation location of the immovable surface F (on the support structure B), the waterstop center pillar A can be tilted so that the first rolling member 25 and the second rolling member 26 are in contact with the ground, and then the second handle portion 17 can be rotated upward and the gripping portion 17a can be grasped and pulled by hand, allowing it to be easily moved.

[0066] <Installation process> After transporting the center pillar A for the waterstop to the installation location (on the support structure B), the center pillar A for the waterstop is set upright and the lower frame 20 of the center pillar A for the waterstop is positioned opposite the base plate 30 of the support structure B (see Figure 8).

[0067] In this case, since the base plate 30 is provided with a plurality of through holes 30a, the installation position of the waterstop center pillar A is adjusted so that these through holes 30a communicate with the mounting holes 20a formed in the lower frame 20 of the waterstop center pillar A. This adjustment results in the leg 23 of the waterstop center pillar A being placed in a predetermined position on the base plate 30. In normal operation, blocking members 40 are attached to the plurality of through holes 30a formed in the base plate 30, and therefore, the blocking members 40 are removed from the respective through holes 30a in advance.

[0068] Next, the legs 23 are adjusted so that the waterstop center pillar A is vertically erected relative to the upper surface (horizontal plane) of the base plate 30. In other words, since the lower frame 20 of the waterstop center pillar A is provided with a plurality of height-adjustable legs 23 (three in the illustrated example), by rotating these legs 23, the length (height) can be adjusted (extended and contracted), and the horizontality of the lower frame 20 can be adjusted. The pillar portion 11 of the center pillar A for the water stop is arranged vertically relative to the lower frame 20, so that by placing the lower frame 20 in a horizontal position, the center pillar A for the water stop can be made to stand vertically on the base plate 30.

[0069] In this case, the legs 23 may be adjusted using a spirit level (not shown) so that the lower frame 20 of the waterstop center pillar A is in a horizontal state. For example, a spirit level may be placed on the upper surface of the lower frame 20, and the level of the lower frame 20 may be visually confirmed. Note that the spirit level may be one in which air bubbles are sealed in liquid, and the level can be detected based on the position of the air bubbles. Moreover, such a spirit level may be configured to be attached and fixed to the upper surface of the lower frame 20.

[0070] After the lower frame 20 of the center post A for a waterstop is placed in a horizontal position, as shown in Fig. 9, the fastening member 80 is inserted through the mounting hole 20a formed in the lower frame 20 of the center post A for a waterstop and the through hole 30a formed in the base plate 30, and screwed into the fastened member 31, thereby fixing the center post A for a waterstop to the base plate 30. This fixation allows the center post A for a waterstop to be erected vertically on the base plate 30, which is placed in a horizontal position. The male thread portion 80a of the fastening member 80 is screwed into the female thread portion 31a (see Fig. 5) formed in the fastened member 31, thereby detachably fastening the lower frame 20 of the center post A for a waterstop to the base plate 30. When removing the installed water stop center pillar A, follow the steps in reverse.

[0071] As described above, the center pillar A for a waterstop is configured so that, with the legs 23 of the lower frame 20 of the center pillar A for a waterstop supported on the upper surface of the base plate 30, the fastening members 80 having male threaded portions 80a that can be screwed into the female threaded portions 31a of the fastened member 31 are inserted into each mounting hole 20a formed in the lower frame 20 and each through hole 30a formed in the base plate 30, and the male threaded portions 80a of the fastening members 80 are screwed into the female threaded portions 31a of the fastened member 31, thereby allowing the center pillar A for a waterstop to be fixed to the base plate 30. Therefore, the center pillar A for the waterstop can be accurately and reliably installed at a specified position on the fixed surface F.

[0072] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate without departing from the gist of the present invention.

[0073] <Summary> As described above, the above embodiments disclose the following inventions. (1) A support structure that supports from below a center post for a waterstop to which a waterstop is attached, comprising: an upper structure that supports legs provided on a lower frame of the center post for the waterstop; and a lower structure that is provided below the upper structure, wherein the upper structure has a plate-shaped base plate having an upper surface formed into a substantially flat surface, and the base plate has a plurality of through holes that penetrate vertically, and the lower structure has a plurality of fastened members each having a female screw portion that is inserted into each of the plurality of through holes formed in the base plate, This support structure is characterized in that, with the legs of the lower frame supported on the upper surface of the base plate, a fastening member having a male threaded portion that can be screwed into the female threaded portion is inserted into a plurality of mounting holes formed in the lower frame and the plurality of through holes formed in the base plate, and the male threaded portion is screwed into the female threaded portion, thereby allowing the waterstop center column to be fixed to the base plate. (2) The support structure described in (1) above, characterized in that the upper surface of the base plate of the upper structural part is horizontally arranged so as to be approximately flush with the upper surface of the immovable surface on which the center column for the waterstop is installed, and the lower structural part is arranged in a buried state in the ground below the immovable surface. (3) The support structure described in (2) above, characterized in that the lower structural portion has an anchor material having a pair of mounting members extending in an approximately horizontal direction attached to the underside of the base plate, a pair of vertical members extending approximately vertically downward from one end of each of the pair of mounting members, and a horizontal member extending in an approximately horizontal direction connected to the lower end of each of the pair of vertical members. (4) The support structure described in (3) above, characterized in that the pair of vertical members of the anchor material are connected and fixed to a main anchor driven below the fixed surface. (5) The support structure described in any of (1) to (4) above, characterized in that the lower structural part has a cylindrical cover member arranged to surround the fastened part, the opening at the upper end of the cover member is joined to the lower surface of the base plate, and the opening at the lower end of the cover member is blocked by a flat bottom plate part. (6) A support structure as described in any one of (1) to (5) above, characterized in that a blocking member capable of blocking the through holes is removably provided in the multiple through holes formed in the base plate. (7) The method for constructing a support structure as described in (1) above, characterized in that it includes a chipping step of chipping a part of an immovable surface on which the center post for the waterstop is to be placed to form a concave chipped portion capable of accommodating the support structure, a main anchor installation step of arranging a plurality of main anchors in predetermined positions on the bottom surface of the chipped portion, a support structure installation step of accommodating the support structure in the chipped portion and fixing anchor materials provided in the lower structure portion to the main anchors, and a filling step of filling the chipped portion with a filling material. (8) The support structure installation process is characterized in that the vertical member of the anchor material and the upper end of the main anchor are fixed by a fixing means in a state in which the upper surface of the base plate is horizontally positioned so that it is approximately flush with the upper surface of the immovable surface. (9) The construction method for a support structure described in (7) or (8) above, characterized in that the filling process involves pouring the filler so that the upper surfaces of the base plate and the immovable surface are approximately flush with each other, and filling the entire area except for the upper surface of the base plate while leaving the upper surface of the base plate exposed. [Explanation of symbols]

[0074] A: Middle pillar for water stop plate B: Support structure B1: Upper structure part B2: Lower structure part F: Fudo face 1,2: Water stop 20: Lower frame 20a: Mounting hole 23: Legs 30: Base plate 30a: Through hole 31: Parts to be fastened 32: Cover material 34c: Horizontal member 34: Anchor material 34a: Mounting member 34b: Vertical member 40: Blocking material 60: Main anchor 80: Fastening member

Claims

1. A support structure that supports a center pole for a waterstop plate to which the waterstop plate is attached from below, An upper structure portion supporting a leg portion provided on a lower frame of the waterstop center pillar; A lower structure provided below the upper structure; Equipped with The upper structure has a plate-like base plate having an upper surface formed into a substantially flat surface, and a plurality of through holes are formed in the base plate, the through holes extending vertically therethrough, the lower structure portion has a plurality of fastened members each having a female screw portion formed therein and adapted to be inserted into the plurality of through holes formed in the base plate, With the legs of the lower frame supported on the upper surface of the base plate, fastening members having male threads that can be screwed into the female threads are inserted into a plurality of mounting holes formed in the lower frame and the plurality of through holes formed in the base plate, and the male threads are screwed into the female threads, thereby allowing the waterstop center pillar to be fixed to the base plate. A support structure comprising:

2. The upper surface of the base plate of the upper structure is horizontally disposed so as to be substantially flush with the upper surface of an immovable surface on which the waterstop center pillar is installed, and the lower structure is disposed in a buried state in the ground below the immovable surface.

2. The support structure of claim 1.

3. The lower structure has an anchor member including a pair of mounting members that extend in a substantially horizontal direction and are attached to the lower surface of the base plate, a pair of vertical members that extend substantially vertically downward from one end of each of the pair of mounting members, and a horizontal member that extends in a substantially horizontal direction and is connected to the lower end of each of the pair of vertical members.

3. The support structure of claim 2.

4. The pair of vertical members of the anchoring material are connected and fixed to a main anchor driven below the stationary surface.

4. The support structure of claim 3.

5. The lower structure has a cylindrical cover member arranged to surround the fastened workpiece, The opening at the upper end of the cover member is joined to the lower surface of the base plate, and the opening at the lower end of the cover member is closed by a flat bottom plate portion. A support structure according to any one of claims 1 to 4.

6. The plurality of through holes formed in the base plate are provided with blocking members capable of blocking the through holes in a detachable manner. A support structure according to any one of claims 1 to 4.

7. a chipping step of chipping a part of the immovable surface on which the waterstop center post is disposed to form a concave chipped portion capable of accommodating the support structure; a main anchor installation process for disposing a plurality of main anchors at predetermined positions on a bottom surface of the hanging portion; a support structure installation process for accommodating the support structure in the chipped portion and fixing an anchor material provided in the lower structure to the main anchor; a filling step of filling the chipped portion with a filler; 2. The method of claim 1, further comprising:

8. The support structure installation step includes fixing the vertical member of the anchor material and the upper end of the main anchor by a fixing means in a state where the upper surface of the base plate is horizontally arranged so as to be substantially flush with the upper surface of the immovable surface. A method for constructing a support structure according to claim 7.

9. The filling step pours the filler so that the upper surface of the base plate and the upper surface of the immovable surface are substantially flush with each other, and fills the portion of the base plate excluding the upper surface while exposing the upper surface of the base plate.

9. A method for constructing a support structure according to claim 8.

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