Structures and methods for constructing structures

Abstract

To provide a structure which enables an asphalt mat to be appropriately mounted on a bottom part, and a structure building method.SOLUTION: A structure includes: a structure body having a bottom part along a plane; an asphalt mat which is provided on a lower surface of the bottom plate of the structure body, and has a through hole penetrating in a height direction; and an asphalt mixture which is made to fill the through hole so as to be brought into contact with the inner peripheral surface of the through hole and the lower surface of the bottom plate, and fixes the bottom plate and the asphalt mat.SELECTED DRAWING: Figure 1

Description

Technical Field

[0004] ,

[0006] , , , , , ,

[0005] , , ,

[0003] , , , ,

[0001] The present disclosure relates to a structure and a method for constructing the structure.

Background Art

[0002] When constructing a landfill or a breakwater in the coastal area, a structure is constructed on the seabed ground of the target area. This structure is composed of a plurality of structures (caissons, L-shaped blocks, etc.) arranged so as to surround the target area. In order to withstand the acting external forces such as wave pressure, earth pressure, and seismic force, an asphalt mat may be attached to the bottom of the structure (see, for example, Patent Document 1). ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The structure according to this disclosure comprises a structural body having a base plate aligned with a plane, an asphalt mat provided on the lower surface of the base plate of the structural body and having through holes penetrating in the height direction, and an asphalt mixture filled into the through holes so as to be in contact with the inner circumferential surface of the through holes and the lower surface of the base plate, thereby fixing the base plate and the asphalt mat.

[0007] The structure according to this disclosure comprises a structural body having a base plate aligned with a plane, an asphalt mat provided on the lower surface of the base plate of the structural body, and a side protective member having a frame-shaped arrangement along the sides of the base plate and the asphalt mat, and being inserted and fixed between the base plate and the asphalt mat, and a covering portion extending downward from the fixing portion and covering the sides of the asphalt mat.

[0008] A method for manufacturing a structure according to this disclosure includes the steps of: positioning a structural body having a bottom plate in a working position with the bottom plate positioned upward; placing an asphalt mat having through holes that penetrate in the height direction on the upper surface of the bottom plate in the working position; filling the through holes in the asphalt mat in the working position with an asphalt mixture so as to be in contact with the inner circumferential surface of the through holes and the lower surface of the bottom plate to fix the bottom plate and the asphalt mat; and forming the structural body in an installation position with the bottom plate and the asphalt mat positioned downward.

[0009] A method for manufacturing a structure according to this disclosure includes the steps of: placing an asphalt mat on a predetermined plane; placing a structure body having a bottom plate on top of the asphalt mat; arranging a fixing portion of a side protective member between the asphalt mat and the bottom plate so as to follow the peripheral edge of the bottom plate, and covering the side of the asphalt mat with a covering portion extending downward from the fixing portion; and fixing the fixing portion to the bottom plate. [Effects of the Invention]

[0010] According to this disclosure, it is possible to provide a structure on which an asphalt mat can be properly attached to the bottom, and a method for constructing such a structure. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 shows an example of a structure according to the first embodiment. [Figure 2] Figure 2 shows an example of a structure viewed from the bottom. [Figure 3] Figure 3 shows an example of an asphalt mat viewed from the bottom side. [Figure 4] Figure 4 shows another example of an asphalt mat viewed from the bottom side. [Figure 5] Figure 5 shows the configuration along the AA section in Figure 4. [Figure 6] Figure 6 is a flowchart showing an example of a construction method for a structure. [Figure 7] Figure 7 shows an example of the manufacturing process of a structure. [Figure 8] Figure 8 shows an example of the manufacturing process of a structure. [Figure 9] Figure 9 shows an example of the manufacturing process of a structure. [Figure 10] Figure 10 shows an example of the manufacturing process of a structure. [Figure 11] Figure 11 shows an example of a structure according to the second embodiment. [Figure 12] Figure 12 is a cross-sectional view showing a magnified portion of the structure. [Figure 13] Figure 13 is a flowchart showing an example of a construction method for a structure. [Figure 14] Figure 14 shows an example of the manufacturing process of a structure. [Figure 15] Figure 15 shows an example of the manufacturing process of a structure. [Figure 16] Figure 16 shows an example of the manufacturing process of a structure. [Figure 17]FIG. 17 is a diagram showing an example of the manufacturing process of the structure. [Figure 18] FIG. 18 is a diagram showing an example of the manufacturing process of the structure. [Figure 19] FIG. 19 is a diagram showing another example of the structure. [Figure 20] FIG. 20 is a diagram showing an example when the structure is viewed from the bottom side. [Figure 21] FIG. 21 is a cross-sectional view showing a part of the structure enlarged.

Mode for Carrying Out the Invention

[0012] Hereinafter, embodiments of the structure and the construction method of the structure according to the present disclosure will be described based on the drawings. Note that the present invention is not limited by this embodiment. In addition, the components in the following embodiments include those that can be replaced by those skilled in the art and are easy to replace, or those that are substantially the same.

[0013] [First Embodiment] FIG. 1 is a diagram showing an example of the structure 100 according to the first embodiment. The structure 100 shown in FIG. 1 is a revetment structure that is arranged on the seabed ground and constructs a revetment. Note that the structure 100 is not limited to the revetment structure, and may be other gravity structures. In the present embodiment, the structure 100 is, for example, a hybrid caisson. It includes a structure body 10, an asphalt mat 20, and an asphalt mixture 30.

[0014] The structure body 10 is formed using, for example, steel materials and cast-in materials. The structure body 10 is, for example, made of steel and is formed in a box shape by a wall member 11 and a bottom plate 12. The inside of the structure body 10 may be filled with cast-in materials. The bottom plate 12 is, for example, square-shaped, and the lower surface 12a is flat.

[0015] The asphalt mat 20 is provided on the lower surface 12a of the base plate 12 of the main body of the structure 10. The asphalt mat 20 is formed into a plate shape using an asphalt mixture. Figure 2 shows an example of the structure 100 as viewed from the bottom side. As shown in Figure 2, for example, multiple asphalt mats 20 are provided and laid out to cover the lower surface 12a.

[0016] Figure 3 shows an example of an asphalt mat viewed from the bottom. As shown in Figure 3, each asphalt mat 20 has through holes 21 that penetrate the asphalt mat 20 in the thickness direction. The through holes 21 are provided at each of the four corners of the rectangular asphalt mat 20. The arrangement of the through holes 21 is not limited to the four corners, but may also be provided at other parts of the asphalt mat 20, such as the center. The number of through holes 21 is at least one. The through holes 21 are, for example, circular in shape, but are not limited to this shape, and may be polygonal, elliptical, or other shapes.

[0017] The asphalt mixture 30 is filled into the through-hole 21 so as to be in contact with the inner circumferential surface 21a of the through-hole 21 and the lower surface 12a of the bottom plate 12. With this configuration, the asphalt mixture 30 adheres to the inner circumferential surface 21a of the through-hole 21 and the bottom surface 12a of the bottom plate 12, respectively, while filled into the through-hole 21. As a result, the asphalt mat 20 and the bottom plate 12 of the structure body 10 are joined together via the asphalt mixture 30.

[0018] In this embodiment, since through holes 21 and asphalt mixture 30 are provided at the four corners of the asphalt mat 20, the asphalt mat 20 is joined to the base plate 12 at each of the four corners. Therefore, because the asphalt mat 20 is firmly joined to the base plate 12, it is possible to prevent the asphalt mat 20 from peeling off the base plate 12.

[0019] Figure 4 shows another example of the asphalt mat viewed from the bottom side. Figure 5 shows the configuration along the AA cross section in Figure 4. As shown in Figures 4 and 5, the asphalt mat 20A has a reinforcing layer 22 inside. The reinforcing layer 22 is formed by reinforcing members 22a, for example, in a grid pattern. The reinforcing layer 22 is provided both inside and outside the through holes 21. The asphalt mat 20A has connecting members 23 inside the through holes 21. The connecting members 23 connect the reinforcing layer 22 and the bottom plate 12. The connecting members 23 can be cylindrical, for example, but are not limited to this configuration and may have other shapes.

[0020] As shown in Figures 4 and 5, when the through-hole 21 is filled with the asphalt mixture 30, the reinforcing layer 22 and the connecting member 23 are locked to the asphalt mixture 30. Therefore, the asphalt mixture 30 fixes the base plate 12 and the asphalt mat 20 via the reinforcing layer 22 and the connecting member 23.

[0021] The connecting member 23 is not required. In this case, when the through-hole 21 is filled with the asphalt mixture 30, the reinforcing layer 22 is locked to the asphalt mixture 30. Therefore, the asphalt mixture 30 fixes the base plate 12 and the asphalt mat 20 via the reinforcing layer 22.

[0022] Next, a method for constructing a structure configured as described above will be explained. Figure 6 is a flowchart showing an example of a method for constructing a structure. Figures 7 to 10 show an example of the manufacturing process of structure 100. As shown in Figure 6, the method for constructing a structure according to this embodiment includes a posture adjustment step S10, an asphalt mat placement step S20, an asphalt mat fixing step S30, and a posture restoration step S40.

[0023] The posture adjustment (asphalt mat mounting state) step S10 is performed as shown in Figure 7, by setting the main body of the structure 10, which has a base plate 12, to a working posture ST1 in which the base plate 12 is positioned upwards. In other words, the main body of the structure 10 is inverted upside down.

[0024] As shown in Figure 8, the asphalt mat placement step S20 involves placing an asphalt mat 20 having through holes 21 on the upper surface of the base plate 12 in the working position ST1, that is, on the surface corresponding to the lower surface 12a of the base plate 12. In the asphalt mat placement step S20, one or more asphalt mats 20 are laid out so as to cover the upper surface of the base plate 12.

[0025] As shown in Figure 9, the asphalt mat fixing process S30 involves filling the through-holes 21 of the asphalt mat 20 in the working position ST1 with asphalt mixture 30 so that it is in contact with the inner circumferential surface 21a of the through-holes 21 and the lower surface 12a of the bottom plate 12, thereby fixing the bottom plate 12 and the asphalt mat 20. If multiple through-holes 21 are provided, the asphalt mixture 30 is filled into each through-hole 21.

[0026] In the posture restoration process S40, as shown in Figure 10, the main body of the structure 10 is returned to its original orientation ST2 with the base plate 12 and asphalt mat 20 positioned downwards. In other words, the top and bottom of the main body of the structure 10 are returned to their original position. This completes the structure 100 with the asphalt mat 20 fixed to the lower surface 12a of the base plate 12.

[0027] As described above, the structure 100 according to this embodiment comprises a structural body 10 having a base plate 12 that is aligned with a plane, an asphalt mat 20 provided on the lower surface 12a of the base plate 12 of the structural body 10 and having a through hole 21 that penetrates in the height direction, and an asphalt mixture 30 that is filled into the through hole 21 so as to be in contact with the inner circumferential surface 21a of the through hole 21 and the lower surface 12a of the base plate 12, and fixes the base plate 12 and the asphalt mat 20.

[0028] Therefore, when filled into the through-hole 21, the asphalt mat 20 is bonded to the inner circumferential surface 21a of the through-hole 21 and to the bottom surface 12a of the bottom plate 12, respectively, so that the asphalt mat 20 and the bottom plate 12 of the structure body 10 are firmly joined via the asphalt mixture 30. This makes it possible to provide a structure 100 in which the asphalt mat 20 can be properly attached to the bottom plate 12.

[0029] In the structure 100 according to this embodiment, the base plate 12 is made of steel. When the base plate 12 is made of steel, it is difficult to attach the asphalt mat 20 to the base plate 12 using anchor bolts. In contrast, according to this embodiment, the asphalt mat 20 can be properly attached to the steel base plate 12.

[0030] In the structure 100 according to this embodiment, the asphalt mat 20 has a reinforcing layer 22 extending both inside and outside the through hole 21, and the asphalt mixture 30 fixes the base plate 12 and the asphalt mat 20 via the reinforcing layer 22. Therefore, the base plate 12 and the asphalt mat 20 are firmly fixed by the asphalt mixture 30 via the reinforcing layer 22.

[0031] In the structure 100 according to this embodiment, the asphalt mat 20 has a connecting member 23 inside the through hole 21 that connects the reinforcing layer 22 and the base plate 12, and the asphalt mixture 30 fixes the base plate 12 and the asphalt mat 20 via the reinforcing layer 22 and the connecting member 23. Therefore, the base plate 12 and the asphalt mat 20 are firmly fixed by the asphalt mixture 30 via the reinforcing layer 22 and the connecting member 23.

[0032] In the structure 100 according to this embodiment, the asphalt mat 20 is rectangular in shape, and the through holes 21 and the asphalt mixture 30 are provided at the corners of the asphalt mat 20. Therefore, the corners of the rectangular asphalt mat 20 can be more firmly joined to the base plate.

[0033] The construction method for the structure 100 according to this embodiment includes the steps of: setting the structure body 10 having a base plate 12 to a working position ST1 with the base plate 12 positioned upwards; placing an asphalt mat 20 having through holes 21 penetrating in the height direction on the upper surface of the base plate 12 in the working position ST1; filling the through holes 21 of the asphalt mat 20 in the working position ST1 with an asphalt mixture 30 to fix the base plate 12 and the asphalt mat 20; and forming the structure 100 by setting the structure body 10 to an installation position ST2 with the base plate 12 and the asphalt mat 20 positioned downwards.Therefore, a structure 100 with the asphalt mat 20 properly attached to the base plate 12 can be efficiently constructed.

[0034] In this embodiment, the case where the base plate 12 is made of steel was used as an example, but the explanation is not limited to this, and a similar explanation can be given when the base plate 12 is made of a material other than concrete or other components.

[0035] [Second Embodiment] Figure 11 shows an example of a structure 200 according to the second embodiment. The structure 200 shown in Figure 11 is used to construct a seawall by placing one or more of them on the seabed ground, such as a rubble mound. In this embodiment, the structure 200 is, for example, a hybrid caisson. It comprises a structure body 40, an asphalt mat 50, and side protective members 60.

[0036] The main structure 40 is formed using, for example, steel and cast concrete. The main structure 40 is made of, for example, steel and is formed in a box shape by wall members 41 and a bottom plate 42. Cast concrete may be filled inside the main structure 40. The bottom plate 42 is, for example, rectangular and has a flat bottom surface 42a.

[0037] The asphalt mat 50 is provided on the lower surface 42a of the base plate 42 of the main structure 40. The asphalt mat 50 is formed into a plate shape using an asphalt mixture. Multiple asphalt mats 50 are provided, for example, and are laid out to cover the lower surface 42a of the base plate 42. The asphalt mat 50 may be joined to the base plate 42 using, for example, an adhesive, or it may be joined to the base plate 42 with an asphalt mixture as described in the first embodiment above.

[0038] Figure 12 is an example of a cross-sectional view showing an enlarged portion of the structure 200. As shown in Figure 12, the asphalt mat 50 has a lower layer 51, a reinforcing layer 52, a glass cloth layer 53, and an upper layer 54. The lower layer 51 is located at the bottom. The reinforcing layer 52 has, for example, reinforcing members 52a formed in a grid pattern. The glass cloth layer 53 is located on top of the reinforcing layer 52. The upper layer 54 is located on top of the lower layer 51 so as to cover the reinforcing layer 52 and the glass cloth layer 53. This configuration increases the strength of the asphalt mat 50.

[0039] The side protection member 60 is arranged in a frame shape along the sides of the base plate 42 and the asphalt mat 50. The side protection member 60 is made of, for example, steel. The side protection member 60 has a fixing portion 61 and a covering portion 62. The fixing portion 61 is inserted between the base plate 42 and the asphalt mat 50. The fixing portion 61 is a plate-like portion along the base plate 42 and is fixed to the base plate 42 by, for example, a welded portion 64. The covering portion 62 extends downward from the outer end of the fixing portion 61 and covers the sides of the asphalt mat 50.

[0040] The height dimension of the covering portion 62 is set to correspond to the remaining thickness of the asphalt mat 50 when it is placed on the seabed. For example, when the asphalt mat 50 is placed on a rubble mound as the seabed, the height dimension of the covering portion 62 is set to correspond to the remaining thickness of the asphalt mat 50 on the rubble mound MD (see Figure 12). When the asphalt mat 50 is placed on a rubble mound, over time it creeps and deforms under the weight of the main structure 40, causing it to dig into the rubble, and the thickness of the portion placed on the rubble mound (remaining thickness) decreases. For example, if the thickness of the asphalt mat 50 at the time of construction is 10 cm, the remaining thickness of the asphalt mat 50 on the rubble mound is 5 cm. In this case, the height dimension of the covering portion 62 can be set to about 5 cm. Furthermore, for example, if the thickness of the asphalt mat 50 at the time of construction is 8 cm, the remaining thickness of the asphalt mat 50 on the rubble mound is 3 cm. In this case, the height dimension of the covering portion 62 can be set to approximately 3 cm. The thickness of the asphalt mat 50 described above is just an example, and it is applicable to different thicknesses as well. The side protective member 60 may also be deformable in response to the penetration of rubble contained in the rubble mound MD by the covering portion 61. In this case, the covering portion 61 may be configured to undergo creep deformation similar to the asphalt mat 50, or it may be configured to undergo buckling deformation. The covering portion 61 only needs to have sufficient strength to allow the asphalt mat 50 to be installed. In addition, the material, dimensions, and strength of the covering portion 61 are set so that sufficient frictional force is generated between the asphalt mat 50 and the rubble mound MD when it deforms. For example, the covering portion 61 may be made of a material and has sufficient strength to deform so that sufficient frictional force is generated between the asphalt mat 50 and the rubble mound MD. Its height may be set to be approximately the same as the thickness of the asphalt mat 50, or it may be set to be greater than the remaining thickness mentioned above.

[0041] The side protection member 60 may have an auxiliary covering member 63 positioned on the side of the asphalt mat 50 corresponding to the portion facing the rubble mound. The auxiliary covering member 63 is formed to cover the space between the lower end of the covering portion 62 and the lower surface of the asphalt mat 50 during construction. The auxiliary covering member 63 is detachably attached to the covering portion 62. The auxiliary covering member 63 may be made of, for example, wood.

[0042] Next, a method for constructing the structure configured as described above will be explained. Figure 13 is a flowchart showing an example of a method for constructing the structure. Figures 14 to 18 show an example of the manufacturing process of the structure 200. As shown in Figure 13, the method for constructing the structure 200 according to this embodiment includes an asphalt mat placement step S50, a structure body placement step S60, a side protective member placement step S70, and a fixing step S80.

[0043] The asphalt mat placement process (S50 in Figure 13) involves placing the asphalt mats 50 on a predetermined plane, for example, on the land side (such as a caisson manufacturing yard), as shown in Figure 14. One or more asphalt mats 50 can be placed depending on the dimensions of the base plate 42 of the structure body 40.

[0044] The structure body placement process (S60 in Figure 13) involves placing the structure body 40, which has a base plate 42, on top of the asphalt mat 50, as shown in Figure 15. In the structure body placement process S60, the structure body 40 is lifted by a crane or the like, positioned above the asphalt mat 50, and then lowered to be placed on top of the asphalt mat 50.

[0045] In the side protection member placement step (S70 in Figure 13), as shown in Figure 16, the fixing portion 61 of the side protection member 60 is placed between the asphalt mat 50 and the bottom plate 42 so as to follow the periphery of the bottom plate 42, and the side of the asphalt mat 50 is covered by the covering portion 62 extending downward from the fixing portion 61. After that, an auxiliary covering member 63 may be attached to the lower end of the covering portion 62.

[0046] In the fixing step (S80 in Figure 13), after positioning the side protective member 60, the fixing part 61 is fixed to the bottom plate 42 of the main structure 40, as shown in Figure 17. In the fixing step S80, for example, the fixing part 61 and the bottom plate 42 can be fixed by welding.

[0047] The structure 200 constructed in this manner may be transported, for example, from land (such as a caisson manufacturing yard) to a predetermined installation site while floating on water. In this case, as shown in Figure 18, the upper part of the structure body 40 protrudes above the water surface, and the lower part of the structure body 40 and the asphalt mat 50 are submerged while the structure 200 is moved. When the structure 200 is moved, the lower part of the structure body 40 and the asphalt mat 50 are subjected to external forces such as water pressure, wave pressure, and towing pressure from the front in the direction of movement. In this embodiment, since the side protective member 60 is provided, the external forces acting on the asphalt mat 50, such as water pressure, can be reduced. Therefore, it is possible to suppress the asphalt mat 50 from peeling off from the bottom plate 42.

[0048] As described above, the structure 200 according to this embodiment comprises a structure body 40 having a bottom plate 42 that is aligned with a plane, an asphalt mat 50 provided on the lower surface 42a of the bottom plate 42 of the structure body 40, and a side protection member 60 having a fixing part 61 that is arranged in a frame shape along the sides of the bottom plate 42 and the asphalt mat 50 and is inserted and fixed between the bottom plate 42 and the asphalt mat 50, and a covering part 62 that extends downward from the fixing part 61 and covers the sides of the asphalt mat 50.

[0049] When the structure 200 is moved by floating it on water from the land side (caisson manufacturing yard) to be installed on a predetermined seabed, the lower part of the structure body 40 and the asphalt mat 50 are subjected to water pressure, wave pressure, towing pressure, etc. from the front in the direction of movement underwater. In this embodiment, since the side protective member 60 is provided, the external forces such as water pressure and wave pressure acting on the asphalt mat 50 can be reduced. Therefore, the separation of the asphalt mat 50 from the bottom plate 42 can be suppressed. As a result, a structure 200 can be provided in which the asphalt mat 50 can be properly attached to the bottom plate 42.

[0050] In the structure 200 according to this embodiment, the bottom plate 42 and the side protective members 60 are made of steel. The asphalt mat 50 can be properly attached to the steel bottom plate 42 and properly protected by the side protective members 60.

[0051] In the structure 200 according to this embodiment, the asphalt mat 50 is placed on a rubble mound, and the height dimension of the side protective member 60 is set to correspond to the remaining thickness of the asphalt mat 50 on the rubble mound. When the asphalt mat 50 is placed on a rubble mound, over time it creeps and deforms under the weight of the structure body 40, causing it to dig into the rubble, and the thickness (remaining thickness) of the portion placed on the rubble mound decreases. In this embodiment, since the height dimension of the side protective member 60 is set to correspond to the remaining thickness of the asphalt mat 50 on the rubble mound, interference between the side protective member 60 and the rubble mound can be avoided.

[0052] In the structure 200 according to this embodiment, the side protective member 60 has an auxiliary covering member 63 that is detachably attached to the covering portion 62 and positioned to correspond to the portion of the side of the asphalt mat 50 that faces the rubble mound. With this configuration, the portion of the side of the asphalt mat 50 that faces the rubble mound can be reliably protected. Furthermore, since the auxiliary covering member 63 is detachable from the covering portion 62, interference with the rubble mound can be avoided by detaching it from the covering portion 62 when it comes into contact with the rubble mound.

[0053] In the structure 200 according to this embodiment, the asphalt mat 50 has a lower layer 51 placed at the bottom, a reinforcing layer 52 placed on the lower layer 51, a glass cloth layer 53 placed on the reinforcing layer 52, and an upper layer 54 placed on the lower layer 51 so as to cover the reinforcing layer 52 and the glass cloth layer 53. Therefore, the strength of the asphalt mat 50 is increased, and deformation can be suppressed more reliably.

[0054] In the structure 200 according to this embodiment, the asphalt mat 50 is placed on the rubble mound MD, and the side protective member 60 is deformable in response to the intrusion of rubble contained in the rubble mound MD. Therefore, when the asphalt mat 50 is placed on the rubble mound and creeps and deforms over time due to the weight of the structure body 40, causing the rubble to become embedded, the side protective member 60 deforms in response to the intrusion of rubble, thereby ensuring the generation of frictional force by the asphalt mat 50.

[0055] The construction method for the structure 200 according to this embodiment includes the steps of: placing an asphalt mat 50 on a predetermined plane; placing a structure body 40 having a base plate 42 on top of the asphalt mat 50; placing a fixing portion 61 of a side protective member 60 between the asphalt mat 50 and the base plate 42 so as to follow the peripheral edge of the base plate 42, and covering the side of the asphalt mat 50 with a covering portion 62 extending downward from the fixing portion 61; and fixing the fixing portion 61 to the base plate 42. Therefore, a structure 200 in which the asphalt mat 50 and the side protective member 60 can be properly attached to the base plate 42 can be efficiently manufactured.

[0056] Figure 19 shows another example of the structure. In structure 200A shown in Figure 19, multiple asphalt mats 50 are arranged in a line along a horizontal plane. Structure 200A includes connecting members 70. The connecting members 70 are placed between the multiple asphalt mats 50 and connect adjacent asphalt mats 50. For example, CT steel can be used as the connecting members 70.

[0057] Figure 20 shows an example of the structure 200A viewed from the bottom. Figure 21 is a cross-sectional view showing an enlarged portion of the structure 200A. The connecting member 70 can be arranged corresponding to the vertical and horizontal directions in Figure 20. The connecting member 70 has a flange portion 71 on its upper surface that contacts the bottom plate 42. The bottom plate 42 also has a through hole 42b in the portion that contacts the flange portion 71. The bottom plate 42 and the connecting member 70 are joined by a welded portion 72 that is positioned to fill the through hole 42b. The flange portion 71 is configured to extend in one direction along the asphalt mat 50. Multiple through holes 42b are formed along the direction in which the flange portion 71 extends.

[0058] Thus, in the structure 200A of the other example, multiple asphalt mats 50 are arranged in a line along a horizontal plane, and a connecting member 70 is further provided, which is placed between the multiple asphalt mats 50, connecting adjacent asphalt mats 50, and has a flange portion 71 on its upper surface that contacts the bottom plate 42. The bottom plate 42 has a through hole 42b in the portion that contacts the flange portion 71, and the bottom plate 42 and the connecting member 70 are joined by a welded portion 72 which is positioned to fill the through hole 42b. Therefore, the asphalt mats 50 can be firmly joined by the bottom plate 42. In addition, since the through hole 42b of the bottom plate 42 is filled by the welded portion 72, water can be prevented from entering from the bottom plate 42.

[0059] The technical scope of the present invention is not limited to the embodiments described above, and modifications can be made as appropriate without departing from the spirit of the invention. In the embodiments described above, a hybrid caisson was used as an example of a structure, but the invention is not limited thereto, and a steel caisson may also be used. Furthermore, in the embodiments described above, the case in which the bottom plates 12 and 42 are made of steel was used as an example, but the invention is not limited thereto, and a similar explanation can be given when the bottom plates 12 and 42 are formed of materials other than steel, such as concrete. [Explanation of Symbols]

[0060] 10,40 Main structure 11,41 Wall components 12,42 Bottom plate 12a,42a Bottom surface 12a Bottom 20,20A,50 Asphalt Mat 21,42b Through hole 21a Inner surface 22,52 Reinforcement layer 22a, 52a Reinforcement members 23,70 Connecting members 30 Asphalt mixture 51 Lower layer 53 Glass cloth layer 54 Upper layer 60 Side protective member 61 Fixed part 62 Covering part 63 Auxiliary covering member 71 Flange section 72 Welded parts 100, 200, 200A Structures S10 Posture adjustment process S20, S50 Asphalt mat placement process S30 Asphalt mat fixing process S40 Posture Restoration Process S60 Structure Installation Process S70 Side protection member placement process S80 Fixed process ST1 Working posture ST2 installation posture

Claims

1. A structural body having a base plate that conforms to the plane, An asphalt mat provided on the lower surface of the bottom plate of the main body of the structure, having through holes that penetrate in the height direction, The asphalt mixture is filled into the through-hole so as to be in contact with the inner circumferential surface of the through-hole and the lower surface of the bottom plate, and fixes the bottom plate and the asphalt mat. Equipped with, The asphalt mat has a reinforcing layer inside, extending both inside and outside the through-hole. The asphalt mixture fixes the base plate and the asphalt mat via the reinforcing layer. The asphalt mat has a connecting member inside the through hole that connects the reinforcing layer and the bottom plate. The asphalt mixture fixes the bottom plate and the asphalt mat via the reinforcing layer and the connecting member. structure.

2. The aforementioned base plate is made of steel. The structure according to claim 1.

3. The aforementioned asphalt mat is rectangular in shape, The aforementioned through-hole and the aforementioned asphalt mixture are provided at the corners of the asphalt mat. The structure according to claim 1 or claim 2.

4. A structural body having a base plate that conforms to the plane, An asphalt mat provided on the lower surface of the bottom plate of the main body of the structure, A side protection member having a frame-shaped arrangement along the sides of the base plate and the asphalt mat, a fixing portion inserted and fixed between the base plate and the asphalt mat, and a covering portion extending downward from the fixing portion and covering the sides of the asphalt mat. Equipped with, The aforementioned asphalt mat is placed on the rubble mound, The dimensions of the side protective member are set in the height direction to correspond to the remaining thickness of the asphalt mat on the rubble mound. structure.

5. The side protective member has an auxiliary covering member that is positioned corresponding to the portion of the side of the asphalt mat that is on the rubble mound side. The structure according to claim 4.

6. A structural body having a base plate that conforms to the plane, An asphalt mat provided on the lower surface of the bottom plate of the main body of the structure, A side protection member having a frame-shaped arrangement along the sides of the base plate and the asphalt mat, a fixing portion inserted and fixed between the base plate and the asphalt mat, and a covering portion extending downward from the fixing portion and covering the sides of the asphalt mat. Equipped with, The aforementioned asphalt mats are arranged in multiples along a horizontal plane, The system further includes a connecting member that is positioned between multiple asphalt mats, connects adjacent asphalt mats, and has a flange portion on its upper surface that contacts the bottom plate, The bottom plate has a through hole in the portion that contacts the flange portion. The bottom plate and the connecting member are joined by a weld that is positioned to fill the through hole. structure.

7. The bottom plate and the side protective member are made of steel. The structure according to any one of claims 4 to 6.

8. The aforementioned asphalt mat is The lower layer located at the bottom, A reinforcing layer placed on the aforementioned lower layer, A glass cloth layer disposed on the reinforcing layer, An upper layer disposed on the lower layer so as to cover the reinforcing layer and the glass cloth layer. has The structure according to any one of claims 4 to 7.

9. The aforementioned asphalt mat is placed on the rubble mound, The side protective member is deformable in response to the intrusion of rubble contained in the rubble mound. The structure according to any one of claims 4 to 8.

10. A step of positioning the main body of a structure having a base plate in a working position with the base plate positioned upwards, The steps include placing an asphalt mat having through holes that penetrate in the height direction on the upper surface of the bottom plate in the aforementioned working position, A step of filling the through-holes of the asphalt mat in the aforementioned working position with asphalt mixture so as to be in contact with the inner circumferential surface of the through-holes and the lower surface of the bottom plate, thereby fixing the bottom plate and the asphalt mat together. The process of forming the structure in an installation position in which the base plate and the asphalt mat are positioned downwards. A method of constructing a structure that includes such structures.

11. The process involves placing an asphalt mat on a predetermined plane, The process involves placing the main body of the structure having a base plate on top of the asphalt mat, The process involves arranging the fixing portion of the side protective member between the asphalt mat and the bottom plate so as to follow the peripheral edge of the bottom plate, and covering the side of the asphalt mat with a covering portion extending downward from the fixing portion, The process of fixing the fixing part to the bottom plate A method of constructing a structure that includes such structures.

Images