JP5124438B2 - Tank reinforcement structure and construction method thereof - Google Patents

Description

  The present invention relates to a tank reinforcing structure used as, for example, a large-sized water supply tank that contains a fluid such as drinking water and a construction method thereof.

  Conventionally, this type of large tank is constructed by, for example, welding a plurality of 1 m square panels, 1 m long and 2 m long rectangular panels, or 1 m long and 1.5 m wide rectangular panels. Such large tanks have been reinforced using a horizontal reinforcing bar and a vertical reinforcing bar inside the tank. That is, each panel is formed with bending flanges on each of the four sides, adjacent flanges are welded inside the tank, and horizontal reinforcing bars are vertically and horizontally connected between the opposing flanges in multiple stages. In addition, a vertical reinforcing bar is erected between the bottom plate of the tank and the roof plate (ceiling plate), and is connected to the horizontal reinforcing bar.

In such a conventional large tank reinforcing structure, the vertical reinforcing bar is set to have a constant length, so that the vertical span receiving a large water pressure becomes long. As a result, there is a problem in that the rigidity of the vertical reinforcing bar has to be increased to use a heavy bar and the material cost is increased. In order to eliminate such drawbacks, the applicant of the present application has proposed a tank internal reinforcement structure (see Patent Document 1). That is, the internal reinforcing structure of the tank is provided with a truss-type reinforcing member between the bottom plate and the lowermost horizontal reinforcing bar in addition to the horizontal reinforcing bar and the vertical reinforcing bar, and an intermediate portion of the reinforcing member. And a horizontal intermediate portion of the horizontal reinforcing bar are connected by an inclined reinforcing bar. According to this internal reinforcement structure, the span sharing the vertical water pressure is, for example, half that of the conventional span, greatly reducing the weight of the truss-type reinforcing member and saving material costs. In addition, the welding operation can be easily performed.
JP 2001-315891 A (page 2, page 4 and page 5)

  However, in the internal reinforcement structure of the tank described in Patent Document 1, since the truss-type reinforcement member is directly provided on the panel forming the tank, the horizontal reinforcement bar is used when constructing the reinforcement structure. The work necessary to form the truss structure, such as the work of welding the inclined reinforcing bar or the like to the panel, must be performed in the tank. Therefore, the workability for constructing the reinforcing structure is poor, and it takes a long time to complete the reinforcing structure, resulting in poor efficiency.

  The present invention has been made paying attention to such problems existing in the prior art, and the object thereof is excellent in workability for constructing a reinforcing structure and efficiently constructing a reinforcing structure. Another object of the present invention is to provide a tank reinforcing structure and a method for constructing the same.

In order to achieve the above object, the tank reinforcing structure according to claim 1 is a tank in which a side plate having a plurality of panels joined to the periphery of a bottom plate is erected and a roof plate is placed thereon to store fluid. To reinforce the tank. And the diagonal reinforcing material changes the inclination direction in order between the long vertical reinforcing material erected to support the roofing plate between the bottom plate and the roofing plate, and the vertical reinforcing material shorter than the vertical reinforcing material. The truss structure joined so that the long vertical reinforcing material side becomes the panel side is formed separately from the side plate, and is arranged vertically and horizontally as seen from the plane, and outwards of the side plate by fluid pressure A horizontal reinforcing material for preventing the deformation of the steel frame is installed between opposing panels, and the truss structure is connected to the horizontal reinforcing material .

The tank reinforcing structure according to claim 2 is the invention according to claim 1, wherein the horizontal reinforcing member is disposed at a plurality of upper and lower positions passing through the intersection of the vertical reinforcing member and the oblique reinforcing member of the truss structure. The horizontal reinforcing material is not disposed at the lower intersection, the horizontal reinforcing material having an extending portion is disposed outward from the intersecting portion, and the extending portion is joined to the panel. Features.

The tank reinforcing structure according to claim 3 is the invention according to claim 1 or 2, wherein a joint plate to which a horizontal reinforcing material is joined is joined to an intersection of the vertical reinforcing material and the diagonal reinforcing material. It is fixed.

A method for constructing a tank reinforcement structure according to claim 4 is a method for constructing a tank reinforcement structure according to any one of claims 1 to 3, wherein the truss structure is disposed outside the tank. After the construction, the truss structure is housed in a tank, and the truss structure is connected to a horizontal reinforcing member.

According to the present invention, the following effects can be exhibited.
In the tank reinforcing structure according to claim 1 , a slant is provided between a long vertical reinforcing material standing to support the roof plate between the bottom plate and the roof plate, and a vertical reinforcing material shorter than the vertical reinforcing material. A truss structure configured such that the reinforcing members are joined in the inclined direction in order and the long vertical reinforcing member side becomes the panel side is formed separately from the side plate . For this reason, the truss structure after pre-built outside the tank, can be accommodated in the tank. Then, it is possible to connect the truss structure in the horizontal reinforcements.

Therefore, according to the first aspect of the invention, the workability for constructing the reinforcing structure is excellent, and the reinforcing structure can be constructed efficiently.
In the tank reinforcing structure according to claim 2, the horizontal reinforcing member is disposed at a plurality of positions above and below the crossing portion of the vertical reinforcing member and the diagonal reinforcing member of the truss structure , and the horizontal reinforcing member is disposed at the lowest crossing portion. No material is disposed, and a horizontal reinforcing material having an extending portion is disposed outward from the intersecting portion, and the extending portion is joined to the panel. For this reason, in addition to the effect of the invention according to claim 1, since the truss structure is composed of the vertical reinforcing material and the diagonal reinforcing material, the structure of the truss structure constructed outside the tank is simplified. Can be manufactured easily.

In the tank reinforcing structure according to claim 3, a joint plate to which a horizontal reinforcing material is bonded is fixedly bonded to an intersection of the vertical reinforcing material and the diagonal reinforcing material. For this reason, in addition to the effect of the invention concerning Claim 1 or Claim 2 , a truss structure can be easily joined to a horizontal reinforcement using a joint plate.

In the method for constructing a tank reinforcing structure according to claim 4 , after the truss structure is constructed outside the tank, the truss structure is housed in the tank, and the truss structure is connected to the horizontal reinforcing material . For this reason, work such as welding for constituting the truss structure can be easily performed outside the tank, and the workability is excellent, and the tank reinforcing structure can be efficiently constructed.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment that is considered to be the best of the present invention will be described in detail with reference to the drawings.
(First embodiment)
As shown in FIGS. 1 and 3, a tank 10 such as a water supply tank has a side plate 13 erected on a peripheral edge of a bottom plate 11 by welding a panel 12 as shown in FIG. A roof plate 14 is put on the upper end portion of 13 and welded to form a square box shape. In this embodiment, the tank 10 has a structure in which the panels 12 are joined in three stages in the vertical direction. The panel 12 is provided with vertical ribs 15 having a mountain-shaped cross section at regular intervals to improve the strength. In addition, a connecting plate 16 having a transverse L-shaped cross section wider than the thickness of the panel 12 is welded to the upper end portion of each panel 12. The bottom plate 11, the side plate 13 and the roof plate 14 are made of stainless steel. In the tank 10, fluids such as drinking water, fire-fighting water, warm water, and industrial water are stored. The tank 10 has a reinforcing structure built therein.

  As shown in FIG. 1, the end portion of the roof plate 14 is placed on and welded to a connecting plate 16 fixed to the upper end portion of the panel 12. In addition, as shown in FIG. 5, the roof plate 14 is provided with protrusions 17 having a circular arc cross section at regular intervals to improve the strength, and a bent portion 18 for joining is provided at the end. Is provided. The bent portion 18 is welded to a connecting fitting 19 joined to an upper end portion of a vertical reinforcing member 20 described later.

  As shown in FIG. 1, between the bottom plate 11 and the roof plate 14, a vertical reinforcing member 20 formed of an angle material (L-shaped steel) is installed at a predetermined interval so as to support the roof plate 14. Has been. The vertical reinforcing members 20 are arranged in two rows along the side plate 13 on the outer periphery of the tank 10. The vertical reinforcing member 20 located on the outermost peripheral side of the vertical reinforcing member 20 is provided at a position separated from the side plate 13 by a predetermined distance, for example, 1000 mm or less. A joint plate 21 having a front rhombus shape, a front pentagon shape, a front triangle shape, or the like is welded to the vertical reinforcing member 20 at a certain interval in the vertical direction.

  A horizontal reinforcing material 22 formed of an angle material is welded to every other joint in the height direction of the joint plate 21 of the vertical reinforcing material 20, and the joint plate 21 positioned between the horizontal reinforcing materials 22 is welded to the joint plate 21. Similarly, an intermediate horizontal reinforcing member 23 formed of an angle member is welded. Thus, the joint plate 21 is provided at the intersection of the vertical reinforcing member 20 and the horizontal reinforcing member 22 or the intermediate horizontal reinforcing member 23. In the present embodiment, the horizontal reinforcing member 22 is disposed at two height positions, and the intermediate horizontal reinforcing member 23 is disposed at three height positions. The horizontal reinforcing member 22 is provided with an extending portion 22a extending to the outer peripheral side from the vertical reinforcing member 20 positioned on the outermost peripheral side. These horizontal reinforcing material 22 and intermediate horizontal reinforcing material 23 are arranged vertically and horizontally as viewed from above (see FIG. 3).

  A tensile reinforcement 24 is welded to the joint plate 21 welded to the vertical reinforcement 20 located on the inner peripheral side in the tank 10 and stretched in the horizontal direction. These tensile reinforcing members 24 are provided on the inward extension lines of the horizontal reinforcing member 22 and the intermediate horizontal reinforcing member 23, and hold the side plate 13 so as not to be inclined outward. As shown in FIG. 2, the end of the extending portion 22 a of the horizontal reinforcing member 22 is placed on and welded to a connecting plate 16 fixed to the upper end portion of the panel 12. In this way, the side plate 13 of the tank 10 is connected to the horizontal reinforcing member 22 to prevent the side plate 13 from being deformed outwardly based on the fluid pressure.

  As shown in FIG. 1, among the joint plates 21 attached to the vertical reinforcement member 20, diagonal reinforcement members 25 are welded between the diagonally opposing joint plates 21, and the vertical reinforcement member 20, the horizontal reinforcement member 22, The intermediate horizontal reinforcing member 23 and the diagonal reinforcing member 25 constitute a truss structure 26. That is, the truss structure 26 based on the triangle is constituted by the vertical reinforcing member 20, the horizontal reinforcing member 22, or the intermediate horizontal reinforcing member 23 and the diagonal reinforcing member 25, and a structure having high strength (rigidity) is formed. The truss structure 26 is configured separately from the side plate 13 obtained by joining the panels 12.

  As shown in FIG. 3, a partition wall 27 that divides the tank 10 into two equal parts is provided at the center of the tank 10, and two storage chambers 28, 29 are formed. The reinforcing structure based on the truss structure 26 in the two storage chambers 28 and 29 can be changed according to the type of the fluid stored in the two storage chambers 28 and 29, the storage amount, and the like.

Next, the construction method of the reinforcing structure of the tank 10 configured as described above will be described.
As shown in FIG. 6, the truss structure 26 is first constructed outside the tank 10, for example, in a factory. That is, the joint plate 21 is welded at a predetermined interval in the height direction for each vertical reinforcing member 20. Subsequently, the horizontal reinforcing material 22 or the intermediate horizontal reinforcing material 23 is arranged in the horizontal direction and the oblique reinforcing material 25 is arranged in the oblique direction and welded to these joint plates 21. In this case, the horizontal reinforcing member 22 is formed with an extending portion 22a extending from the vertical reinforcing member 20 positioned on the outer peripheral side to the outer peripheral side by a certain length. Since these operations can be performed outside the tank 10 in advance, they can be performed easily and quickly as compared with the case where the operations are performed inside the tank 10. In this way, the truss structure 26 is configured.

  On the other hand, as shown in FIG. 7, the side plate 13 of the tank 10 is erected on the periphery of the bottom plate 11. That is, while welding between the edge parts of the several panel 12 adjacent to the circumferential direction, the connection plate 16 is welded to the upper end part of each panel 12. As shown in FIG. Further, the end portions of the panel 12 are welded in the same manner, and the connecting plate 16 is welded onto the panel 12. In this way, the side plates 13 are configured by stacking the panels 12 in three upper and lower stages. At this time, it is desirable to connect the panel 12 to the bottom plate 11 using a detachable jig for preventing falling.

  Next, as shown in FIG. 8, the truss structure 26 is accommodated in the tank 10. At this time, the extending portion 22 a of the horizontal reinforcing member 22 is located at a position separated from the connecting plate 16 of the side plate 13 of the tank 10. From this state, the truss structure 26 is moved to the outer peripheral side in the tank 10, and the extending portion 22 a of the horizontal reinforcing member 22 is placed on the connecting plate 16. In this state, the truss structure 26 can be connected to the side plate 13 of the tank 10 by welding the extending portion 22 a of the horizontal reinforcing member 22 to the connecting plate 16. Thereafter, the tensile reinforcement member 24 is welded to the joint plate 21 provided on the vertical reinforcement member 20 located on the inner peripheral side in the tank 10 and stretched in the horizontal direction. In this way, the reinforcing structure of the tank 10 can be constructed.

The actions and effects exhibited by the above first embodiment will be collectively described below.
-In the reinforcement structure of the tank 10 of this embodiment, the truss structure body 26 is comprised from the said vertical reinforcement material 20, the horizontal reinforcement material 22 connected with this vertical reinforcement material 20, and the diagonal reinforcement material 25, and this truss The structure 26 is configured separately from the side plate 13 and independently. For this reason, the truss structure 26 can be housed in the tank 10 after it is quickly constructed without being restricted by the tank 10 outside the tank 10 in advance. Then, at least a part of the extended portion 22 a of the horizontal reinforcing member 22 can be welded and fixed to the side plate 13 from the truss structure body 26.

  Therefore, the work for constructing the reinforcement structure of the tank 10 is extremely easy and excellent in workability, and the reinforcement structure can be constructed efficiently in a short time. The truss structure body 26 can receive the outward force of the side plate 13 based on the fluid pressure while being distributed to the diagonal reinforcing material 25 in addition to the vertical reinforcing material 20 and the horizontal reinforcing material 22. The tank 10 can be strongly reinforced, for example, deformation to the direction can be suppressed.

  Since the connecting plate 16 wider than the thickness of the panel 12 is joined to the upper end of each panel 12 and the extending portion 22a of the horizontal reinforcing member 22 is mounted on the connecting plate 16 and welded, the horizontal The reinforcing material 22 can be easily joined to the side plate 13.

  An intermediate horizontal reinforcing member 23 is disposed between the horizontal reinforcing member 22 at the upper position and the lower position, and the joint plate 21, the horizontal reinforcing member 22, and the vertical reinforcing member at the intersection of the intermediate horizontal reinforcing member 23 and the vertical reinforcing member 20. An oblique reinforcing material 25 is disposed between the joint plates 21 at the intersections with the material 20. In this case, the triangles constituting the truss structure 26 can be made smaller and denser, and the tank 10 can be reinforced more firmly.

  The tensile reinforcement member 24 is disposed on an extension line from the joint plate 21 at the intersection of the intermediate horizontal reinforcement member 23 and the vertical reinforcement member 20 to the inside of the intermediate horizontal reinforcement member 23. For this reason, the force for holding the side plate 13 inward increases, and deformation of the side plate 13 toward the outside due to fluid pressure can be further suppressed.

  A joint plate 21 to which the horizontal reinforcing member 22, the intermediate horizontal reinforcing member 23, or the diagonal reinforcing member 25 is bonded is fixed to the intersection of the vertical reinforcing member 20 with the horizontal reinforcing member 22 or the intermediate horizontal reinforcing member 23. Accordingly, the horizontal reinforcing member 22, the intermediate horizontal reinforcing member 23 or the diagonal reinforcing member 25 can be easily welded to the joint plate 21 having a large area joined to the vertical reinforcing member 20, and the joining is performed easily and quickly. be able to.

  Since the vertical reinforcing member 20, the horizontal reinforcing member 22, the intermediate horizontal reinforcing member 23, and the diagonal reinforcing member 25 are made of angle members having an L-shaped cross section, the strength of each reinforcing member can be increased, and the tank 10 is reinforced. The structure can be made strong.

In the method for constructing the reinforcing structure of the tank 10, after the truss structure 26 is constructed outside the tank 10, the truss structure 26 is accommodated in the tank 10, and the extending portion 22a of the horizontal reinforcing member 22 is disposed on the side plate. 13 is connected. For this reason, work such as welding for constituting the truss structure 26 can be easily performed outside the tank 10 without being restricted by the tank 10, and the workability is excellent, and the reinforcing structure of the tank 10 is shortened for a short time. Can be built efficiently.
(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS. In the second embodiment, parts different from those in the first embodiment will be mainly described, and the same parts will be denoted by the same member numbers and the description thereof will be omitted.

  As shown in FIGS. 10 and 11, the horizontal reinforcing member 22 is installed between the opposing panels 12, is formed in a lattice shape when viewed from above, and is arranged in two upper and lower stages. The horizontal reinforcing material 22 is not disposed at the lowest level. The truss structure 26 constructed outside the tank 10 is constructed by joining four diagonal reinforcing members 25 in order to the joint plate 21 between the long vertical reinforcing member 20a and the short vertical reinforcing member 20b while changing the inclination direction. Has been. Since this truss structure 26 is disposed so that the long vertical reinforcing member 20a side is the panel 12 side, the left end truss structure 26 and the right end truss structure 26 in FIG. Is shown in

  The truss structure 26 is dropped to a position near the horizontal reinforcing member 22 arranged in a lattice shape in the tank 10 as shown by a two-dot chain line in FIG. Moved to. At this time, the vertical reinforcing member 20 a of the truss structure 26 is in a state of being substantially in contact with the connecting plate 16 provided on the panel 12. In this state, the horizontal reinforcing members 22 are welded and joined to the joint plates 21 of the truss structure 26.

  A horizontal reinforcing member 22b having an extending portion 22a is welded to the joint plate 21 at the lower end portion of the short vertical reinforcing member 20b forming the truss structure 26, and the end of the extending portion 22a is a panel. It is placed on the twelve connecting plates 16 and welded. However, when the short vertical reinforcing member 20b extends to the bottom plate 11 of the tank 10, as shown by a two-dot chain line in FIG. 10, the horizontal reinforcing member 22b is omitted. Further, as shown by a two-dot chain line in FIG. 10, the horizontal reinforcing member 22 b is also omitted when the horizontal reinforcing member 22 is disposed at the lowermost stage.

  As described above, according to the second embodiment, the truss structure 26 constructed outside the tank 10 is constituted by the vertical reinforcing members 20a and 20b and the diagonal reinforcing member 25. The structure of the truss structure 26 to be constructed can be simplified, and the manufacture can be facilitated. In addition, since the horizontal reinforcing member 22 is installed between the opposing panels 12 in the tank 10, the panel 12 can be prevented from falling down, and the truss structure 26 constructed outside the tank 10 can be disposed inside the tank 10. Therefore, the reinforcing structure of the tank 10 can be easily constructed.

It should be noted that the embodiments described above can be modified and embodied as follows.
As shown in FIG. 9, the intermediate horizontal reinforcing member 23, the joint plate 21 to which the intermediate horizontal reinforcing member 23 is attached, and the oblique reinforcing member 25 attached to the joint plate 21 can be omitted. In place of these diagonal reinforcing members 25, the diagonal reinforcing members 25 can be welded to the joint plate 21 to which the horizontal reinforcing members 22 are attached. In addition, the tensile reinforcement 24 can be omitted.

-The extension part 22a of the horizontal reinforcement 22 does not need to be provided in all the horizontal reinforcements 22, but can be provided in at least one, ie, a desired number of horizontal reinforcements 22.
The joint plate 21 for attaching the horizontal reinforcing member 22, the intermediate horizontal reinforcing member 23 and the diagonal reinforcing member 25 constituting the truss structure 26 is omitted, and the horizontal reinforcing member 22, the intermediate horizontal reinforcing member 23 and the diagonal reinforcing member are omitted. It is also possible to weld 25 directly to the vertical reinforcement 20.

The side plate 13 of the tank 10 can be configured by joining the panel 12 in two or more stages in the vertical direction.
The angle members constituting the vertical reinforcement member 20, the horizontal reinforcement member 22, the intermediate horizontal reinforcement member 23, and the diagonal reinforcement member 25 are not limited to the L-shaped cross section, and may have a concave shape, a H shape, or the like. .

  The joint of the horizontal reinforcing member 22, the intermediate horizontal reinforcing member 23, the diagonal reinforcing member 25 and the like to the joint plate 21 and the joining of the extending portion 22a of the horizontal reinforcing member 22 to the connecting plate 16 are performed by bolts and nuts in addition to welding. A method by fastening, fixing by rivets, or the like may be used.

  In the first embodiment, the lower end portion of the vertical reinforcing member 20 located on the inner peripheral side of the tank 10, that is, the vertical reinforcing member 20 between the lowermost joint plate 21 and the bottom plate 11 can be omitted.

Next, the technical idea that can be grasped from the embodiment will be described below.
The tank reinforcement structure according to any one of claims 1 to 3 , wherein the truss structure body is located at a position separated from the side plate. In such a case, in addition to the effects of the invention according to any one of claims 1 to 3 , after the truss structure is constructed, the truss structure is housed in the tank and is easily connected to the side plate of the tank. be able to.

After housing the 〇 said truss structure to the tank, according to claim 4 in bonded joint plates to the ends of the panels, characterized by bonding by placing the extending portion of the horizontal reinforcement that extends method for constructing a reinforcing structure of the tank according to. When comprised in this way, in addition to the effect of the invention which concerns on Claim 4 , a horizontal reinforcing material can be easily joined to a panel.

The longitudinal cross-sectional view which shows the reinforcement structure of the tank in 1st Embodiment. The partial plane sectional view which shows the state which joins the extension part of a horizontal reinforcing material to the side plate of a tank. The top view which shows the whole tank typically. The perspective view which shows the panel which forms a side plate. The fragmentary sectional view which shows the attachment structure of the roof board with respect to a vertical reinforcement. The longitudinal cross-sectional view which shows the state which constructed | assembled the truss structure. The longitudinal cross-sectional view which shows the tank which has a baseplate and a side plate. The longitudinal cross-sectional view which shows the state which accommodated the truss structure shown in FIG. 6 in the tank shown in FIG. It is a figure which shows another example of this invention, Comprising: The longitudinal cross-sectional view which shows the reinforcement structure of the tank of the state which abbreviate | omitted the intermediate | middle horizontal reinforcement material etc. Explanatory drawing which shows the longitudinal cross-section for showing the construction method of the reinforcement structure of the tank in 2nd Embodiment. The top view which shows typically the whole tank in 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Tank, 11 ... Bottom plate, 12 ... Panel, 13 ... Side plate, 14 ... Roof plate, 16 ... Connecting plate, 20, 20a, 20b ... Vertical reinforcing material, 21 ... Joint plate, 22, 22b ... Horizontal reinforcing material, 22a ... Extension part, 23 ... Intermediate horizontal reinforcement, 24 ... Tensile reinforcement, 25 ... Diagonal reinforcement, 26 ... Truss structure.

Claims (4)

A side plate in which a plurality of panels are joined to the periphery of the bottom plate, and a tank for storing fluid by covering the roof plate on the side plate is configured, and a tank reinforcing structure for reinforcing the tank,
An oblique reinforcing material is joined to the bottom plate and the roof plate between the long vertical reinforcing material erected to support the roof plate and the vertical reinforcing material shorter than the vertical reinforcing material in order of the inclination direction. The truss structure configured so that the long vertical reinforcing material side is the panel side is formed separately from the side plate, and is arranged vertically and horizontally as viewed from the plane, and is applied to the outside of the side plate by fluid pressure. A tank reinforcing structure , wherein a horizontal reinforcing member for preventing deformation is installed between opposing panels, and the truss structure is connected to the horizontal reinforcing member . The horizontal reinforcing members are arranged at a plurality of upper and lower positions passing through the intersecting portion of the vertical reinforcing member and the oblique reinforcing member of the truss structure, and the horizontal reinforcing member is not disposed at the lowermost intersecting portion. 2. The tank reinforcing structure according to claim 1 , wherein a horizontal reinforcing material having an extending portion is disposed further outward, and the extending portion is joined to a panel . 3. The tank reinforcing structure according to claim 1, wherein a joint plate to which a horizontal reinforcing material is bonded is bonded and fixed at an intersection between the vertical reinforcing material and the diagonal reinforcing material. A method for constructing a tank reinforcing structure according to any one of claims 1 to 3, wherein after the truss structure is constructed outside the tank, the truss structure is accommodated in the tank, A method for constructing a reinforcing structure for a tank, wherein the truss structure is connected to a horizontal reinforcing material.

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