JP2011064056A - Tower structure and joining method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tower structure that can support a vertical load generated by the own vertical load of a reinforcing ring 7 and transmit a horizontal load from a cylinder 1 to a stopper member 5 while reducing welding to the cylinder 1. <P>SOLUTION: The tower structure includes: the cylinder 1; a steel tower 2 attached to the cylinder 1; a reinforcing ring 7 surrounding the cylinder 1; a stopper member 5 provided at the steel tower 2 to support the reinforcing ring 7; a plurality of vertical load support members 8 provided projecting outward from the outer peripheral wall at spaces on the outer peripheral wall of the cylinder 1 to support the vertical load of the reinforcing ring 7 by placing the reinforcing ring 7 thereon; and a plurality of horizontal load transmission members 9 connecting the cylinder 1 to the reinforcing ring 7 and transmitting the horizontal load caused by the shake of the cylinder 1 to the reinforcing ring 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a structure that reinforces a cylinder in a tower structure including a cylinder and a steel tower that supports the cylinder, for example.

As an example of the tower-like structure (for example, Patent Document 1), a configuration example of a chimney will be described based on FIG.
The chimney has a configuration in which a cylinder 1 standing on the ground is supported by a steel tower 2 and a horizontal member 3, and the vibration of the cylinder 1 is suppressed between the cylinder 1 and the horizontal support member 4. A plurality of steel dampers 6a are provided.
As shown in detail in FIG. 21 (c) of the main part (C portion of FIG. 21 (b)), the base end is placed between the pair of holding bodies 6-6 provided on the cylindrical body 1 with a horizontal support member. In the structure in which the lower end of the steel damper 6a fixed to 4 is inserted, the vibration of the cylinder 1 is absorbed and damped by the deformation of the steel damper 6a. That is, the steel damper 6a can be applied to a structure in which relative displacement occurs between the tubular body 1 and the horizontal support member 4 to which the steel damper 6a is fixed due to an external force such as an earthquake or wind.

  A reinforcing ring 7 is provided on the cylinder 1 side of the installation position of the steel damper 6a for the purpose of reinforcing the cylinder 1 and smoothly transmitting the load from the steel damper 6a as shown in FIG. . In order to fix the reinforcing ring 7 to the cylinder 1, a method of welding and joining the entire circumference of the reinforcing ring 7 to the cylinder 1 has been employed so far. When the reinforcing ring 7 is installed in an existing chimney for seismic reinforcement or the like, the same all-around welding method is usually employed. The welded portion between the tubular body 1 and the reinforcing ring 7 includes both a vertical load (vertical load) based on the load of the reinforcing ring 7 itself and a horizontal load (horizontal load) via the steel damper 6a. The combined external force is applied.

Japanese Patent No. 3825193

In this conventional method, since the entire circumference of the reinforcing ring 7 is welded, the welding amount increases. Therefore, when a protective coating is applied to the inner peripheral wall of the cylinder 1, the coating may be damaged by heat input from welding, and a repainting operation for the inner peripheral wall of the cylinder 1 may be required. In addition, if the inner peripheral wall of the cylinder 1 is lined, the lining may be damaged. After the welding, the lining layer must be inspected for damage. Work is required.
The present invention has been made in view of such a problem, and while supporting the vertical load due to the load of the reinforcing ring 7 itself while reducing the welding to the barrel 1, the horizontal due to the horizontal force from the barrel 1. An object of the present invention is to provide a tower-like structure capable of transmitting a load to a vibration damper such as a steel damper 6a or a stopper member 5 according to an embodiment described later via a reinforcing ring 7.

For this purpose, the tower-like structure of the present invention includes a tower-like structure main body which is an object to be attenuated, a reinforcing tower attached to the tower-like structure main body, and a ring surrounding the tower-like structure main body. And a damping member interposed between the reinforcing tower and the reinforcing member as a basic configuration.
The tower-like structure of the present invention further includes a plurality of vertical load support members and a plurality of horizontal load transmission members.
The vertical load support member is spaced from the outer peripheral wall of the tower-like structure body and protrudes outward from the outer peripheral wall, and supports the vertical load of the reinforcing member by placing the reinforcing member.
Further, the horizontal load transmission member connects the tower-like structure main body and the reinforcing member, and transmits a horizontal force due to shaking of the tower-like structure to the reinforcing member.

The tower-like structure of the present invention is provided with a plurality of vertical load support members and a plurality of horizontal load transmission members individually, and the individual vertical load support members and the individual horizontal load transmission members are small in size. In addition, the plurality of vertical load support members are provided at intervals. Therefore, even if the vertical load support member is provided by welding, the amount of welding can be reduced. The same applies to the horizontal load transmission member.
Moreover, since the tower-like structure of the present invention is provided with the vertical load support member and the horizontal load transmission member separately, the former may be designed considering only the vertical load by the reinforcing member, and the latter Should be designed considering only the horizontal load caused by the shaking of the tower-like structure body. Therefore, the design is facilitated as compared with the case where the combined external force of both the load in the vertical direction and the load in the horizontal direction is taken into consideration as in the conventional welded portion described above.

In this invention, a horizontal load transmission member can be made into the structure by which one end side is connected to a tower-like structure main body, and the position side spaced apart from one end is connected to a reinforcement member. This horizontal load transmission member is usually made of steel.
When the horizontal force due to the shaking of the tower-like structure body is transmitted to the reinforcing member via the horizontal load transmitting member, the shaking is suppressed by the damping member interposed between the reinforcing tower and the reinforcing member.
It is preferable to include a filling transmission body that surrounds the horizontal load transmission member and is interposed between the tower-like structure body and the reinforcing member. This filling transmission body also constitutes a horizontal load transmission member. This filling transmission body functions to constrain the deformation of the horizontal load transmission member and further transmit the horizontal load. Therefore, when the filling transmission body is provided, the number of horizontal load transmission members can be reduced. The filling transmission body is made of, for example, concrete or mortar.

The horizontal load transmitting member described above is one in which one end side is joined to the tower-like structure body and the other end side is joined to the reinforcing member, but the present invention includes other forms. One of them is a form using a filling transmission body.
In other words, this horizontal load transmission member is connected to the filling body interposed between the tower-like structure body and the reinforcing member, and to the tower-like structure body at the connection end, and the tip side from the connection end is engaged in the filling body. It can also be set as the form provided with the 1st latching body stopped and the 2nd latching body connected to a reinforcement member by a connection end, and the front end side is latched in the filling transmission body from the said connection end. In this embodiment, the horizontal load transmission member of the present invention is constituted by three elements, that is, the filling transmission body, the first locking body, and the second locking body.

Further, as the horizontal load transmitting member of the present invention, the first fiber that supports the reinforcing member by covering the reinforcing member and joining the reinforcing member except the surface facing the tower-like structure main body. It can consist of a reinforced sheet. Since this form can join a horizontal load transmission member (1st fiber reinforced sheet) to a tower-like structure body with an adhesive, it can reduce the amount of welding more.
In this embodiment, it is preferable to wrap the portion where the first fiber reinforced sheet covers the reinforcing member with the second fiber reinforced sheet. Since the first fiber reinforced sheet and the second fiber reinforced sheet and between the second fiber reinforced sheet and the tower structure can be joined with an adhesive, the tower structure main body can be firmly supported.

The present invention (first invention) is based on the premise that a vertical load support member and a horizontal load transmission member are separately provided. However, when supporting a reinforcement member using a fiber reinforced sheet, the vertical load support member is omitted. You can also That is, the present invention (the second invention) is reinforced by covering the reinforcing member except for the surface facing the tower-like structure body and joining to the tower-like structure body in addition to the basic structure described above. A tower-like structure comprising a vertical support / horizontal transmission member made of a fiber reinforced sheet for supporting a member is provided.
In the second aspect of the present invention, it is only necessary to join the fiber reinforced sheets with an adhesive, so that it is not necessary to perform welding to support the reinforcing member.

  In the present invention, one or both of the vertical load support member and the horizontal load transmission member are joined to the outer peripheral wall by welding, and the weld bead by meandering meanders, and the meandering weld bead straddles the weld line and supports the vertical load. It is preferable that one or both of the member and the horizontal load transmitting member and the outer peripheral wall are alternately constructed. Further, in the present invention, when one or both of the vertical load support member and the horizontal load transmission member are joined to the outer peripheral wall by welding, an area where welding of one or both of the vertical load support member and the horizontal load transmission member is planned is determined. It is preferable to perform welding after cooling with a cooling medium. Both can suppress the temperature rise of the welded part.

According to the first invention of the present application, since the area to be welded is small, it is possible to remarkably reduce damage to the coating and lining of the cylindrical inner peripheral wall. Further, the vertical load support member and the horizontal load transmission member can be individually designed.
Moreover, according to 2nd invention of this application, a reinforcement member can be supported to the tower-like structure main body, without welding. Therefore, it does not damage the coating and lining of the cylinder inner peripheral wall.

It is a plane sectional view of the tower-like structure by the 1-1st embodiment. It is a longitudinal cross-sectional view of the tower-like structure by 1-1st Embodiment. It is a figure which shows the resistance state in a horizontal load transmission member when shaking arises in the tower-like structure by 1-1st Embodiment. It is a principal part longitudinal cross-sectional view which shows the reinforcement member which can adjust the height of the reinforcement ring by 1-1st Embodiment, (a) has shown before adjustment, (b) has shown after adjustment. It is a fragmentary top sectional view which shows the reinforcement member which can adjust the height of the reinforcement ring by 1-1st embodiment. It is a figure which shows the example of the horizontal load transmission member by 1st-1 embodiment, and a reinforcement ring. It is a figure which shows the example of the vertical load support member by 1-1st embodiment. It is a principal part longitudinal cross-sectional view which shows the reinforcement part by 1-2nd embodiment. It is a figure which shows the resistance state in a horizontal load transmission member when a horizontal load is added to the tower-like structure by 1-2nd embodiment. It is a principal part longitudinal cross-sectional view which shows the reinforcement part by 2nd Embodiment. It is a principal part longitudinal cross-sectional view which shows the reinforcement part by 3rd-1 embodiment. It is a plane sectional view showing the reinforcement part by a 3rd-1 embodiment. It is a principal part longitudinal cross-sectional view which shows the reinforcement part by 3rd-2 embodiment. It is a principal part longitudinal cross-sectional view which shows the reinforcement part of the other example by 2nd Embodiment. It is the top view of the welding member in this Embodiment, (a) is a plane photograph which shows the welding bead vicinity, (b) is a figure which shows the movement locus | trajectory of a welding torch. It is a perspective view which shows the external appearance of the welding member in this Embodiment. It is a graph which shows the result of the welding experiment by a CMT method, and shows the relationship between a heat gain and a temperature rise. The results of the welding experiments with CO ₂ method, which is a graph showing the relationship between heat input and NoboriAtsushiryou. It is a graph which shows the relationship between the temperature rise amount of the back surface of a welding location, and the diameter of a stud pin when changing the diameter of a stud pin variously and welding to a flat plate by CD welding method. In this Embodiment, it is a figure which shows the instrument which cools a welding scheduled location before welding. It is a figure which shows the conventional tower-like structure (chimney), (a) is a front view, (b) is bb arrow sectional drawing of (a), (c) is a detailed drawing of C of (b) (D) is a figure which shows a reinforcement ring.

Hereinafter, the present invention will be described in detail based on the embodiments shown in FIGS. 1 to 20 of the accompanying drawings.
<First Embodiment>
The present embodiment is provided in the conventional chimney shown in FIG. 21, and the same components as those in the conventional chimney are denoted by the same reference numerals as those in FIG. That is, as shown in FIGS. 1 and 2, the chimney 10 according to the present embodiment has a configuration in which a cylindrical body (tubular structure body) 1 erected on the ground is supported by a steel tower 2 and a horizontal member 3. A plurality of stopper members 5 for suppressing vibration of the barrel 1 are provided between the barrel 1 and the horizontal support member 4. More specifically, the stopper member 5 has one end in the radial direction of the cylinder 1 joined to the reinforcing ring 7 and the other end joined to the horizontal support member 4 constituting the reinforcing tower. The steel tower 2, the horizontal member 3, and the horizontal support member 4 constitute the reinforcing tower of the present invention.

<Reinforcing ring 7>
A reinforcing ring (reinforcing member) 7 for reinforcing the cylindrical body 1 is provided between the cylindrical body 1 and the stopper member 5. The reinforcing ring 7 is formed by forming a steel material having an H-shaped cross section into a ring shape by welding or another joining method. The reinforcing ring 7 includes an outer flange portion 7a that is in contact with the stopper member 5, an inner flange portion 7b that is disposed on the cylindrical body 1, and a web portion 7c that connects the outer flange portion 7a and the inner flange portion 7b. . The reinforcing ring 7 divided into two or four parts may be assembled in a ring shape on the tower, or a ring shape previously used may be used.

<Vertical load support member 8>
The reinforcing ring 7 has the inner flange portion 7b placed on the vertical load support member 8 to support the load in the vertical direction. It is sufficient that the inner flange portion 7 b is placed on the vertical load support member 8, and the lower surface of the inner flange portion 7 b is not joined to the upper surface of the vertical load support member 8 by welding or the like. That is, the reinforcing ring 7 is slidably supported by the vertical load support member 8. Thereby, the vertical load support member 8 supports only the load in the vertical direction from the reinforcing ring 7.

The vertical load support member 8 made of a flat steel material is joined to the outer peripheral wall of the cylinder 1 by welding so that the longitudinal direction thereof is along the circumferential direction of the cylinder 1. The vertical load support member 8 supports the vertical load of the reinforcing ring 7, but the dead load itself of the reinforcing ring 7 is not so large. It is sufficient to add a safety factor to the load. A preferred method for welding the vertical load support member 8 to the outer peripheral wall of the cylinder 1 will be described later.
The vertical load support members 8 whose length in the longitudinal direction is sufficiently shorter than the circumferential length of the reinforcing ring 7 are radially arranged at equal intervals on the same circumference of the outer peripheral wall of the barrel 1. In this example, twelve vertical load support members 8 are installed on the outer peripheral wall of the barrel 1, but the number of installations is arbitrary, and the interval between the vertical load support members 8 is not limited equally.

<Horizontal load transmission member 9>
A horizontal load transmission member 9 is provided through the inner flange portion 7 b of the reinforcing ring 7. One end of the horizontal load transmitting member 9 closer to the barrel 1 than the inner flange portion 7 b is joined to the outer peripheral wall of the barrel 1 by welding. A preferred method of welding the horizontal load transmitting member 9 to the outer peripheral wall of the barrel 1 will be described later. Further, the horizontal load transmission member 9 is joined to the inner flange portion 7b by welding at a position away from one end. In this way, the cylindrical body 1 and the horizontal load transmitting member 9 are joined, and the horizontal load transmitting member 9 and the reinforcing ring 7 are joined, so that the horizontal load between the cylindrical body 1 and the reinforcing ring 7 is transmitted. Surely done. The horizontal load transmission member 9 transmits only the horizontal load from the barrel 1 accompanying the shaking to the stopper member 5.

In this example, the horizontal load transmission member 9 is made of steel bar. However, the shape of the horizontal load transmission member 9 is not limited as long as the horizontal load between the cylindrical body 1 and the reinforcing ring 7 is reliably transmitted. For example, a flat steel material may be used, and a bolt may be used as the horizontal load transmission member 9. When the bolt is used as the horizontal load transmission member 9, the horizontal load transmission member 9 made of a bolt may be screwed by cutting the outer peripheral wall of the barrel 1 and the inner flange portion 7 b.
Further, in this example, the horizontal load transmitting members 9 are provided one above the other with the web portion 7c interposed therebetween, but the number and arrangement form are not limited thereto.
In addition, if the horizontal load transmission member 9 deform | transforms easily, it will be difficult to exhibit the function. Therefore, it is assumed that the load can be regarded as a rigid body.

<Installation procedure>
A procedure for providing a stiffening structure according to this embodiment provided with a vertical load support member 8 and a horizontal load transmission member 9 in addition to the reinforcing ring 7 will be described below.
(1) Installation of the vertical load support member 8 First, the vertical load support member 8 is installed on the outer peripheral wall of the cylinder 1 by welding. The plurality of vertical load support members 8 are preferably arranged at equal intervals on the same circumference. By doing so, the load which each vertical load support member 8 receives from the reinforcement ring 7 can be made uniform. The vertical load support member 8 can be installed, for example, by forming a rectangular groove in the outer peripheral wall of the cylinder 1 and fitting the vertical load support member 8 therein to weld. This is advantageous for improving the bonding strength.
Although the vertical load support member 8 is joined to the cylinder 1 by welding, the amount of welding is extremely small as compared with the conventional all-around welding, so damage to the coating and lining formed on the inner peripheral wall of the cylinder 1 Can be significantly reduced.

(2) Installation of Horizontal Load Transmission Member 9 Next, the horizontal load transmission member 9 is installed on the cylinder 1 by welding the tip to the outer peripheral wall of the cylinder 1. The horizontal load transmission members 9 are installed radially on the outer peripheral wall of the cylinder 1 at equal intervals. The horizontal load transmitting member 9 corresponds to the vertical load supporting member 8 installed in advance, and shows an example in which the horizontal load transmitting member 9 is installed above the horizontal load supporting member 8. A transmission member 9 can also be provided.
Although the horizontal load transmission member 9 is also joined to the barrel 1 by welding, since the amount of welding is small, damage to the coating and lining formed on the inner peripheral wall of the barrel 1 can be remarkably reduced.

(3) Installation of reinforcing ring 7 Next, the reinforcing ring 7 is installed. The reinforcing ring 7 has a through hole at a position where the horizontal load transmitting member 9 is penetrated. When the horizontal load transmitting member 9 is passed through the through hole, the reinforcing ring 7 is placed on the vertical load supporting member 8. It is like that.
It is preferable that the reinforcing ring 7 is prepared by dividing a segment member into two or more segments, placing the segment member on the vertical load support member 8, and then welding the segment members together. .
In the present embodiment, a through hole is made in the reinforcing ring 7, and the horizontal load transmitting member 9 is passed through the hole to facilitate positioning of the reinforcing ring 7.

(4) Joining of the reinforcing ring 7 and the horizontal load transmitting member 9 The reinforcing ring 7 is placed on the vertical load supporting member 8, and the reinforcing ring 7, the vertical load supporting member 8 and the horizontal load transmitting member 9 are installed at normal positions. After that, the reinforcing ring 7 and the horizontal load transmitting member 9 are welded and joined. Thus, the reinforcing ring 7, the vertical load support member 8, and the horizontal load transmission member 9 constitute a stiffening structure for the barrel 1. Since the reinforcing ring 7 and the vertical load support member 8 are not joined, the reinforcing ring 7 does not transmit a load in the horizontal direction to the vertical load support member 8.
When a horizontal load acts on the stiffening structure of this embodiment in the direction indicated by the white arrow in FIG. 3, the horizontal load transmission member 9 transmits the horizontal load to the reinforcing ring 7 while resisting in the direction indicated by the solid line arrow in the figure. To do. This load is transmitted to the horizontal support member 4 through the stopper member 5 in the direction indicated by the black arrow.

<Height adjustment mechanism>
In the above description, the height (vertical) direction position of the reinforcing ring 7 is determined only by placing the reinforcing ring 7 on the vertical load supporting member 8. However, the height from the vertical load supporting member 8 varies in the circumferential direction. I want to avoid. For this purpose, the vertical position where the vertical load support member 8 is installed may be aligned in the circumferential direction, but it may be difficult to install the vertical load support member 8 with high accuracy in actual work. . Therefore, in the present embodiment, it is preferable that the reinforcing ring 7 has a height adjusting mechanism.

For example, as shown in FIG. 4, the height adjustment mechanism allows the height adjustment bolt B to pass through the screw hole formed in the flange portion 7 a (b) of the reinforcing ring 7, and the lower end of the height adjustment mechanism B of the vertical load support member 8. This can be achieved by placing it on the top surface. By adjusting the screwing degree of the height adjustment bolt B, the height of the reinforcing ring 7 with respect to the vertical load support member 8 can be adjusted.
As is clear from the above description, the height adjustment mechanism (height adjustment bolt B) is installed on the vertical load support member 8 while considering the ease of height adjustment work, horizontal load transmission is possible. It is preferable to install it at a position where it does not interfere with the member 9. For example, as shown in FIG. 5, when the vertical load support member 8 and the horizontal load transmission member 9 are alternately arranged, the height adjustment bolt B is provided on the vertical load support member 8 to adjust the height. When adjusting the bolt B, the horizontal load transmitting member 9 does not get in the way.

<Effect>
According to the first to first embodiments described above, the vertical load support member 8 and the horizontal load transmission member 9 are each welded and joined to the cylinder 1, but the amount to be welded is extremely higher than that of the conventional entire circumference. Few. Accordingly, it is possible to prevent or suppress the damage to the coating and lining provided on the inner peripheral wall of the cylinder 1 (hereinafter referred to as prevention).
The conventional reinforcing ring that welds the entire circumference has complicated the strength design of the welded portion because the welded portion supports and transmits a combined external force in the vertical and horizontal directions. In contrast, in the present embodiment, the vertical load support member 8 supports only the vertical load, and the horizontal load transmission member supports (transmits) only the horizontal load. Since it is sufficient to design the strength of each of the transmission members 9 independently, it is not necessary to perform a complicated strength design.

<Example of change>
The embodiment described above can be modified.
The reinforcing ring 7 is not limited to the one described above, and can take various forms as shown in FIG.
The reinforcing ring 17 shown in FIG. 6A is the same as the reinforcing ring 7 in FIG. 2 in that H-shaped steel is used, but the installation direction is different by 90 °. Reinforcing ring 17 has an opening that faces in the horizontal direction and does not require consideration for rainwater or the like.
The reinforcing ring 27 shown in FIG. 6B uses a steel plate having a U-shaped cross section. The reinforcing ring 27 is arranged with the opening facing away from the cylindrical body 1. The reinforcing ring 27 has an advantage that the horizontal load transmitting member 9 can be shortened and rigidity is easily secured.
The reinforcing ring 37 shown in FIG. 6C uses a steel plate having a square cross section. The reinforcing ring 37 is configured as a closed section and has higher rigidity than the reinforcing rings 7, 17, and 27.

  Although the vertical load support member 8 is arranged along the circumferential direction in the longitudinal direction, the vertical load support members 18 and 28 may be arranged along the vertical direction as shown in FIG. Since the vertical load support members 18 and 28 are long in the vertical direction, the load that can be supported can be increased if the same plate material is used as compared with the vertical load support member 8. Further, the vertical load support member 28 shown in FIG. 7B can support a larger load and can have a larger contact area with the reinforcement ring 7 than the vertical load support member 18. A load can be avoided.

<1-2 embodiment>
The first to second embodiments will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same component as 1-1st Embodiment.
In the first embodiment, a gap is formed between the cylinder 1 and the reinforcing rings 7 to 37, whereas in the first to second embodiments, a filling transmission body C that transmits a horizontal load is interposed in the gap. There is a feature. Concrete, mortar, and other hardened filling transmission bodies C function to constrain deformation of the horizontal load transmission member 9 and to transmit a horizontal load.

By filling the gap, the unity between the cylinder 1 and the reinforcing rings 7 to 37 is improved. Therefore, as shown by hatching in FIG. Since the load is transmitted as a compressive force to 1, the number of horizontal load transmitting members 9 can be reduced.
In addition, since the joint strength at the interface between the vertical load support member 8 and the filling transmission body C is extremely weak, the joint between the vertical load support member 8 and the filling transmission body C is released when a horizontal load is applied. Therefore, it is understood that a horizontal load is not transmitted to the vertical load support member 8 via the filling transmission body C. However, as shown in FIG. 8, unbonding is performed between the vertical load support member 8 and the filling transmission body C. By interposing the agent (rubber sheet or the like) R, it is possible to more reliably prevent the horizontal load from being transmitted to the vertical load support member 8.

Second Embodiment
A second embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same component as 1-1, 1-2 embodiment.
In the first to second embodiments, one end of the horizontal load transmission member 9 is joined to the cylinder 1, a position away from the one end is joined to the reinforcement ring 7, and the cylinder 1 and the reinforcement ring 7 are connected to the horizontal load transmission member 9. Are directly connected. In contrast, in the second embodiment, instead of providing a member that directly connects the cylinder 1 and the reinforcing ring 7, a stud (first locking body) 11 that protrudes toward the reinforcing ring 7 is provided on the cylinder 1. A stud (second locking body) 12 that is provided on the outer peripheral wall and protrudes toward the cylinder 1 is provided on the surface of the reinforcing ring 7 that faces the cylinder 1. A filling transmission body C is interposed between the cylinder 1 and the reinforcing ring 7 so as to include the studs 11 and 12. Thus, since the studs 11 and 12 are locked in the filling transmission body C, the horizontal direction (particularly, in the path of the stud 11, the filling transmission body C and the stud 12 from the cylindrical body 1 toward the reinforcing ring 7). The load is transmitted in a direction perpendicular to the paper surface of FIG. That is, in the second embodiment, the combination of the stud 11, the filling transmission body C, and the stud 12 constitutes the horizontal load transmission member of the present invention.

  In the example shown in FIGS. 10A to 10D, the stud 11 is provided on the outer peripheral wall of the cylinder 1 and the stud 12 is provided on the surface of the reinforcing ring 7 facing the cylinder 1. As shown in a), for example, the stud 12 on the reinforcing ring 7 side may be omitted.

  Further, as shown in FIG. 14B, the present invention can use a flat plate as the horizontal load transmission member 15. In the case of this form, since both the vertical load support member 18 and the horizontal load transmission member 15 are constituted by flat plates, the same welding method can be employed when both are joined to the cylinder 1. That is, in the case of the form of FIG. 14B, since weaving bead welding according to the present embodiment described later can be applied to welding of both the vertical load support member 18 and the horizontal load transmission member 15, it is used for welding. A single type of equipment and equipment is sufficient to reduce construction costs. The horizontal load transmission member 15 may be provided with a hole penetrating the front and back.

14C can join both the vertical load support member 38 and the stud 11 constituting the horizontal load transmission member to the cylinder 1 by a CD (Capacitor Discharge) welding method which will be described later.
In this embodiment, a stud 41 is welded to the cylinder 1 by a CD welding method, and the vertical load support member 38 is supported by the stud 41. Each of the vertical load support members 38 has a structure in which a flat rib 39 and a base 40 are integrated in a T-shape, and a through-hole through which four studs 41 pass is formed in the base 40. . The vertical load support member 38 is fixed by screwing the nut 42 into the tip of the stud 41 threaded through the base 40. The fixing by the nut 42 is an example, and the stud 41 and the base 40 can be fixed by other means. Since the stud 11 has the form of a stud, it can of course be welded to the cylinder 1 by the CD welding method.
14C can also join both the vertical load support member 38 and the stud 11 to the cylinder 1, so that only one type of equipment and equipment is used for welding, and construction costs can be reduced. In particular, since the CD welding method has a high work efficiency, an advantage of shortening the work period can be expected.

Also in the second embodiment, similarly to the first and first and second embodiments, the coating and lining can be prevented from being damaged, and it is not necessary to perform a complicated strength design, and the number of studs 11 and 12 is further reduced. You can enjoy the effect.
Moreover, 2nd Embodiment has the specific effect which is not obtained in 1-1 and 1-2 embodiment that there is no need for the adjustment work in construction that the horizontal load transmission member 9 penetrates the reinforcing ring 7. .

<Third Embodiment>
A 3rd-1 embodiment is described with reference to FIGS.
The third to third embodiments are the same as the first and second embodiments in that the vertical load support member 8 exclusively supports the load in the vertical direction, but covers the reinforcing ring 7 (to 37) and the cylindrical body. 1 is characterized in that a horizontal load is transmitted by a sheet material 13 (referred to as a fiber reinforced sheet in the present application) made of fiber reinforced plastic that is fixed to 1.

Also in the 3-1 embodiment, the vertical load support members 8 are installed at equal intervals on the outer peripheral wall of the barrel 1 as in the first and second embodiments, as shown in FIG.
The reinforcing rings 7 to 37 are supported by the fiber reinforced sheet (first fiber reinforced sheet) 13 between the adjacent vertical load supporting members 8 and 8. That is, the reinforcing rings 7 to 37 are covered with the fiber reinforced sheet 13 except for the surface facing the outer peripheral wall of the cylinder 1. Excess portions of the fiber reinforced sheet 13 covering the reinforcing rings 7 to 37 are joined to the outer peripheral wall of the cylinder 1 with an adhesive above and below the reinforcing rings 7 to 37. Thereby, the fiber reinforced sheet 13 functions as a horizontal load transmission member. The fiber reinforced sheet 13 is bonded to the cylindrical body 1 and the contact surfaces with the reinforcing rings 7 to 37 are bonded with an adhesive.

The fiber reinforced plastic is made of a composite material of plastic (resin) and a fibrous reinforcing material having a high elastic modulus. As the reinforcing material, glass fiber and carbon fiber, as well as aramid fiber and polyethylene fiber, which are high-strength resin fibers, can be used. There are two main methods for mixing fibers as reinforcing materials. These are a method of uniformly pulverizing finely cut fibers and a method of infiltrating a plastic while keeping the fibers oriented. The method of the present invention does not matter. In the present invention, as the fiber reinforced plastic matrix, a thermosetting resin such as unsaturated polyester is used, but in addition, an epoxy resin, a polyamide resin,
A phenolic resin can be used.
Moreover, as an adhesive agent which joins the fiber reinforced sheet 13 to the cylinder 1, a known adhesive agent such as an epoxy resin adhesive can be used.

  In the 3-1 embodiment as well, as in the first and second embodiments, the coating and lining can be prevented from being damaged, and it is not necessary to perform a complicated strength design. In particular, in the third to third embodiments, the horizontal load transmitting member is bonded to the cylinder 1 by bonding, so that the welding amount is smaller than in the first and second embodiments, so that the effect of preventing damage to the coating and lining is reduced. Becomes prominent.

<Third Embodiment>
In the 3-2 embodiment, as shown in FIG. 13, the periphery of the reinforcing rings 7 to 37 is wrapped with a fiber reinforced sheet (second fiber reinforced sheet) 14, and this fiber reinforced sheet (second fiber reinforced sheet) 14 is used. The wrapped portion is covered with a fiber reinforced sheet (first fiber reinforced sheet) 13, and the excess part is bonded to the outer peripheral wall of the barrel 1 with an adhesive, above and below the reinforcing rings 7 to 37. . At this time, the contact surface of the fiber reinforced sheet 14 enclosing the reinforcing rings 7 to 37 and the fiber reinforced sheet 13 covering the reinforcing ring 7 to 37 is joined with an adhesive, and the fiber reinforced sheet 14 enclosing the reinforcing rings 7 to 37 and the cylinder are joined. The contact surface with the body 1 is also bonded with an adhesive. By doing so, since the adhesive strength with respect to the cylinder 1 of the reinforcement rings 7-37 can be increased, 3rd-2 embodiment improves a horizontal load transmission effect rather than 3rd-1 embodiment.

<Fourth embodiment>
Although the 3-1 and 3-2 embodiments are based on the premise that the vertical load support member 8 (˜28) is provided, the reinforcing ring 7 can be supported only by the fiber reinforced sheet 13. In this case, the fiber reinforced sheet 13 has both functions of a vertical load support member and a horizontal load transmission member. This form is proposed as a fourth embodiment of the present invention.
In the fourth embodiment, since the vertical load support members 8 (˜28) are not provided, the entire circumferential direction of the reinforcing rings 7 to 37 can be covered with the fiber reinforced sheet 13 and joined to the cylinder 1. Of course, it can also cover and join with the fiber reinforced sheet 13 at intervals in the circumferential direction.
Also in the fourth embodiment, the reinforcing ring 7 can be wrapped with the fiber reinforced sheet 14 as in the third to second embodiments.

<Welding method-vertical load support member>
Next, a welding method suitable for joining the vertical load support members 8 (˜28) to the cylinder 1 will be described.
Compared to continuous heat input to the member to be welded when welding is performed, the temperature rise of the member to be welded can be suppressed by intermittently inputting heat to the member to be welded. Therefore, the inventors of the present invention alternately applied the welding beads to the two welded members, thereby reducing the amount of heat input directly applied to one of the welded members M1 or the other welded member M2 by welding. Can be reduced. That is, Q is the total heat input by welding, Q1 is the direct heat input to one welded member M1, and Q2 is the direct heat input to the other welded member M2 (including the case of Q1). Then, by distributing the amount of heat input as Q = Q1 + Q2, it is possible to suppress the temperature rise around the welded part. At this time, the member to be welded M1 and the member to be welded M2 are in contact, and there is heat conduction from the member to be welded M1 side to the member to be welded M2 side and from the member to be welded M2 side to the member to be welded M1 side. However, the amount of heat conducted through the contact surface between the member to be welded M1 and the member to be welded M2 is extremely small compared to the heat conduction in the same member.

  In order to construct welding beads (hereinafter simply referred to as “beads”) alternately on the two members to be welded, a conventional weaving bead method may be used. However, this embodiment does not directly apply the conventional weaving bead method. That is, the conventional weaving bead method is a method in which a subsequent bead is applied without a gap to a bead applied in advance, but this increases the ambient temperature due to welding. On the other hand, this embodiment suppresses a temperature rise by constructing a succeeding bead so that a gap is left with respect to the preceding bead.

FIG. 15 is a plan photograph showing the vicinity of the weld bead 103 of the weld member 100 in which the first welded member 101 and the second welded member 102 are welded by the welding method according to the present embodiment.
The weld bead 103 of the weld member 100 has the following characteristics.
First, the weld bead 103 meanders as shown in FIG. As shown in FIG. 15B, the meandering welding bead 103 can be formed by meandering the movement trajectory of the welding torch 104. Making the movement trajectory of the welding torch 104 meander is known as weaving bead welding. However, in the conventional weaving bead welding, although the moving trajectory of the welding torch meanders, the appearance of the welding bead does not meander. That is, in the weaving bead welding, the beads before and after the turning point 105 are welded to each other, whereas the welding according to the present embodiment is performed between the weld beads 103 around the turning point 105 as shown in FIG. There is a gap 106.

Next, meandering weld beads 103 are alternately applied to the first welded member 101 and the second welded member 102 across the weld line 107. This is the reason why the temperature increase of each of the first welded member 101 and the second welded member 102 can be suppressed. That is, when the first welded member 101 is viewed, the weld bead 103 is intermittently constructed, so heat input to the first welded member 101 is intermittently performed. The same applies to the second welded member 102. Therefore, the heat input by welding is distributed to the first member to be welded 101 and the second member to be welded 102, so that an increase in the temperature around the welding portion, particularly the back surface, can be suppressed.
In the example of FIG. 15, the weld beads 103 are evenly applied to the first welded member 101 and the second welded member 102 across the weld line 107. However, the present embodiment is not limited to this, and the welding bead 103 is allowed to be applied unevenly to the first welded member 101 and the second welded member 102 across the weld line 107.

Although a well-known arc welding method can be widely applied to this embodiment, it is preferable to apply a CMT (Cold Metal Transfer) method in order to suppress the heat input itself. The CMT method is applied while the welding wire repeats forward and backward alternately with respect to the member to be welded. More specifically, the following steps are performed.
(1) When an arc is generated, the welding wire advances toward the molten pool.
(2) When the welding wire is immersed in the molten pool, the arc disappears. Along with this, the welding current decreases at a stretch.
(3) By pulling back the welding wire, the droplet cutting during short circuit is supported.
(4) The movement of the welding wire is reversed and the process returns to the process (1).
In this embodiment, the temperature rise can be remarkably reduced by applying the CMT method. However, the temperature rise can be suppressed even when other methods such as a CO ₂ arc welding method (hereinafter, CO ₂ method) are used. Needless to say, you can.

The present inventors welded a steel plate having a thickness of 10 mm by the CMT method and the CO ₂ method, and measured the temperature rise (temperature rise).
A corner portion formed by vertically setting a rib plate 109 on a base plate 108 shown in FIG. For comparison, the welding bead was meandered on the flat plate under the same conditions. Both the base plate 108 and the rib plate 109 are made of carbon steel.
Further, there are two types of bead shapes, one that meanders the welding torch 104 as shown in FIG. 15A (meandering bead) and one that is straight when the welding torch 104 advances straight (straight bead). went. In the case of the meandering bead, the bead width Wb (see FIG. 15) was 3 mm, and the meandering amplitude Wm (see FIG. 15) of the weld bead 103 was 4 mm. The meandering frequency (cycle) of the weld bead 103 is 20 times / min.

FIG. 17 (CMT method) and FIG. 18 (CO ₂ method) show the results of measuring the temperature on the back side of the welded surface.
17 and 18 reveal the following.
(1) Compared to welding on a flat plate, that is, on a single member (FIGS. 17 and 18 “Plate”), two welded members are welded (FIGS. 17 and 18 “Rib plate”). Then, the temperature rise becomes small.
(2) The temperature rise of the meandering bead is smaller than that of the straight bead.
(3) When two welded members are constructed with meandering beads, the temperature rise can be suppressed to 100 ° C. or less.
Specifically, in the case of the CMT method, when the heat input is 0.24 KJ / mm (welding current: 50 A, welding voltage: 12.6 V, welding speed: 21 cpm), when the flat plate is welded as a meandering bead The temperature of the back surface reached 154 ° C., whereas the temperature of the back surface was 66 ° C. when the rib plate was welded as a meandering bead. When the heat input was 0.27 KJ / mm (welding current: 55 A, welding voltage: 12.9 V, welding speed: 16 cpm), the back surface temperature reached 175 ° C. when the flat plate was welded as a meandering bead. On the other hand, when the rib plate is welded as a meandering bead, the temperature of the back surface is 98 ° C. In the case of the CO ₂ method, when the heat input is 0.32 KJ / mm (welding current: 70 A, welding voltage: 16 V, welding speed: 21 cpm), the temperature of the back surface when the flat plate is welded as a meandering bead. However, when the rib plate was welded as a meandering bead, the temperature of the back surface was 80 ° C.

  By applying the welding method according to the present embodiment described above, the temperature of the back surface of the cylindrical body 1 can be suppressed to such an extent that the coating and lining are not damaged.

<Welding method-horizontal load support member>
Next, a welding method suitable for joining the horizontal load transmitting members 9 and 15 and the stud 11 (hereinafter sometimes collectively referred to as a stud pin) to the cylinder 1 will be described.
In order to weld the end face of the stud pin, a CD (Capacitor Discharge) welding method is suitable for suppressing the temperature rise. The CD welding method is a welding method in which the end surface of a stud pin is pressed against a welding partner, and is stored in a capacitor and discharged to the stud.

  The inventors changed the diameter of the stud pin variously, welded it to a flat plate having a thickness of 10 mm by the CD welding method, and measured the temperature of the back surface of the welded portion. The result is shown in FIG. 19, and the temperature rise increases as the diameter of the stud pin increases. However, even if the diameter is 12 mm that can be used as the horizontal load member 9 or the like, the temperature rise can be suppressed to 30 ° C. or less. . In this way, by using the CD welding method, the temperature of the back surface of the cylinder 1 can be suppressed to such an extent that the coating and lining are not damaged.

<Processing before welding>
When the welding method described above is applied, the temperature rise can be suppressed, but in the summer, the temperature of the cylinder 1 itself rises, and if the temperature rise due to welding is added to this initial temperature, the limit temperature is reached. There is a risk of exceeding (about 100 ° C). In order to prevent this, in this embodiment, it is proposed that the planned welding locations of the vertical load support member and the horizontal load support member are cooled in advance to a temperature lower than the surroundings (for example, 0 ° C.).

In this embodiment, the cooling device 50 is used for this cooling.
The storage container 51 stores the cooling medium CM, and the fixture 55 that fixes the storage container 51 to the cylinder 1.
The storage container 51 includes a container body 52 and a frame portion 53 that is connected to the periphery of the container body 52 and surrounds the container body 52.

The container main body 52 having a box shape is provided with an opening on the upper side and the side facing the cylinder body 1 in a state where the cooling device 50 is installed on the cylinder body 1. In a state where the cooling device 50 is installed on the cylinder 1, a packing (not shown) is disposed on the surface of the frame portion 53 facing the cylinder 1. This packing prevents leakage of the cooling medium CM to the outside by filling the space between the barrel 1 and the frame 53 when the cooling device 50 is attached to the barrel 1.
A heat insulating material 54 is attached to the inner peripheral surface of the container main body 52 so that most of the cooling capacity of the cooling medium CM to be accommodated is consumed for cooling the cylinder body 1.

  The fixing tool 55 adsorbs the arm 56, a bolt 57 fitted in a screw hole (not shown) formed on one end side of the arm 56, and the other end side of the arm 56 by magnetic force (hereinafter simply adsorbed). It consists of a permanent magnet 58. As shown in FIG. 20, the fixture 55 is fixed to the cylinder 1 by attracting the permanent magnet 58 to the outer peripheral wall of the cylinder 1.

  In order to mount the cooling device 50, for example, the container 51 is positioned so as to surround a position where the vertical load support member 18 is scheduled to be fixed, and the position of the container 51 is held while the tip of the bolt 57 of the fixing tool 55 is held. The permanent magnet 58 is attracted to the barrel 1 so that the frame 53 is pressed against the barrel 1 and the fixture 55 is fixed. After that, by tightening the bolts 57 of each fixing tool 55, the force for pressing the container 51 against the cylinder 1 is adjusted so that the cooling medium CM does not leak.

  When the mounting of the cooling device 50 is completed, the cooling medium CM is put into the storage container 51. For example, ice, ice water, or dry ice is used as the cooling medium CM. When the cooling medium CM is inserted and the outer peripheral wall of the cylinder 1 is sufficiently cooled, the cooling device 50 including the cooling medium CM is removed and welding is performed. The cooling state can also be grasped by measuring the temperature of the outer peripheral wall of the barrel 1 with a thermometer.

By using the cooling device 50 as described above, reinforcement work can be performed without hindrance even in the summer when the temperature is high, or when the initial temperature of the cylinder 1 is increased by direct sunlight.
Further, the cooling device 50 uses the magnetic force of the permanent magnet 58 to fix the receiving container 51 to the barrel 1, so that it is not necessary to machine the barrel 1 to mount the cooling device 50. However, the fixing of the cooling device 50 by the permanent magnet 58 is an example, and it goes without saying that other fixing means may be used.

In addition to the above, as long as the gist of the present invention is not deviated, the configuration described in the above embodiment can be selected or changed appropriately to another configuration.
For example, in the above embodiment, a chimney is taken as an example of a tower-like structure, but the present invention is not limited to this and can be widely applied to an exhaust tower and other tower-like structures.
The stopper member 5 corresponds to the vibration damping member in the present invention, but the structure is not limited as long as the vibration transmitted from the reinforcing member (reinforcing ring) can be suppressed. For example, as described in Patent Document 1, a combination of the holding body 6 and the damper 6a, a single damper, or the like can be used as the damping member in the present invention.

10 ... Chimney (tower structure)
DESCRIPTION OF SYMBOLS 1 ... Cylindrical body (tower structure main body) 2 ... Steel tower 3 ... Horizontal material 4 ... Horizontal support member 5 ... Stopper member (vibration control member)
7, 17, 27, 37 ... Reinforcing ring (reinforcing member)
8, 18, 28, 38 ... vertical load support members, 9, 15 ... horizontal load transmission members 11, 12 ... studs (first and second locking bodies)
DESCRIPTION OF SYMBOLS 13,14 ... Fiber reinforced sheet (1st, 2nd fiber reinforced sheet), C ... Filling transmission body 50 ... Cooling instrument, 51 ... Storage container, 55 ... Fixing tool CM ... Cooling medium

Claims (9)

A tower-like structure body that is a body to be attenuated;
A reinforcing tower attached to the tower-like structure body;
A ring-shaped reinforcing member surrounding the periphery of the tower-like structure body;
A damping member interposed between the reinforcing tower and the reinforcing member;
A plurality of vertical loads spaced from the outer peripheral wall of the tower-like structure body and projecting outward from the outer peripheral wall to support the vertical load of the reinforcing member by placing the reinforcing member A support member;
A horizontal load transmitting member that connects the tower-like structure body and each of the reinforcing members, and transmits a horizontal force due to shaking of the tower-like structure to the reinforcing member;
A tower-like structure comprising: The horizontal load transmitting member is
The tower-like structure according to claim 1, wherein one end is connected to the tower-like structure main body, and a position away from the one end is connected to the reinforcing member.   The tower-like structure according to claim 2, further comprising a filling transmission body that surrounds the horizontal load transmitting member and is interposed between the tower-like structure main body and the reinforcing member. The horizontal load transmitting member is
A filling transmission body interposed between the tower-like structure body and the reinforcing member;
A first locking body connected to the tower-like structure main body at a connection end, and a front end side of the connection end locked in the filling transmission body;
A second locking body that is connected to the reinforcing member at a connection end, and whose front end side is locked in the filling transmission body from the connection end;
The tower-like structure according to claim 1. The horizontal load transmitting member is
2. The tower-like structure according to claim 1, wherein the tower-like structure is a first fiber-reinforced sheet that covers the reinforcing member and is joined to the tower-like structure main body to support the reinforcing member.   The tower-like structure according to claim 5, wherein a portion of the first fiber reinforced sheet covering the reinforcing member is wrapped with a second fiber reinforced sheet. A tower-like structure body that is a body to be attenuated;
A reinforcing tower attached to the tower-like structure body;
A ring-shaped reinforcing member surrounding the periphery of the tower-like structure body;
A damping member interposed between the reinforcing tower and the reinforcing member;
A vertical support / horizontal transmission member made of a fiber reinforced sheet that covers the reinforcing member and is joined to the tower-shaped structure body to support the reinforcing member;
A tower-like structure comprising: One or both of the vertical load support member and the horizontal load transmission member are joined to the outer peripheral wall by welding,
The weld bead by the welding meanders,
The meandering weld bead is alternately applied to one or both of the vertical load support member and the horizontal load transmission member and the outer peripheral wall across the weld line,
The tower structure as described in any one of Claim 1, Claim 2, and Claim 3. The tower structure according to any one of claims 1, 2, 3, and 8, wherein one or both of the vertical load supporting member and the horizontal load transmitting member are welded to the outer peripheral wall. A method of joining to
A joining method comprising performing welding after cooling an area where one or both of the vertical load supporting member and the horizontal load transmitting member are to be welded with a cooling medium.

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