JP5722550B2 - Reinforced structure of transmission type sabo dam - Google Patents

Description

  The present invention relates to a reinforcing structure for a transmission type sabo dam, and more particularly to a reinforcing structure for a transmission type sabo dam composed of steel columns.

  As a sabo dam for the purpose of preventing sediment-related disasters such as debris flow, there is, for example, a transmission sabo dam having steel columns formed in a lattice shape. Such a transmission type sabo dam will be described.

  FIG. 14 is a schematic front view of a conventional transmission type sabo dam viewed from the upstream side, and FIG. 15 is a cross-sectional view taken along line XV-XV shown in FIG.

  With reference to these drawings, the sabo dam 80 is composed of a main body 81 made of concrete in which a transmission part 85 is formed, and adjacent steel columns 15a and 15b installed on the foundation concrete 82 of the transmission part 85. It is configured.

  The steel struts 15a are embedded in the foundation concrete 82, and the vertical members 16a to 16c made of circular steel pipes that are inclined in the installed state, the width direction (left-right direction in FIG. 14) and the flow-down direction ( It is comprised from the horizontal members 17a-17c which consist of a circular steel pipe arrange | positioned horizontally in the left-right direction of FIG. Further, the cross member 17a is provided with flanges 66a and 66b at both ends in the longitudinal direction, and each of the vertical members 16a and 16b is provided with flanges 65a and 65b at a connection portion with the cross member 17a. Then, by fixing each of the flange 65a of the longitudinal member 16a and the flange 65b of the longitudinal member 16b and each of the flanges 66a and 66b of the transverse member 17a with bolts or the like, the longitudinal members 16a and 16b and the transverse member 17a Are detachably connected. The same applies to the connection between the other members, and the steel columns 15a are formed in a lattice shape by the connected vertical members 16a to 16c and the horizontal members 17a to 17c. The steel support 15b has the same structure as the steel support 15a.

Since the sabo dam 80 configured in this way prevents the outflow of a large amount of debris to the downstream side at the time of flooding by the steel columns 15a and 15b, it is possible to prevent landslide disasters such as debris flow. Furthermore, since it becomes possible to move to the upstream and downstream sides of the sabo dam 80 via the transmission part 85, it is effective for conservation of the natural environment such as securing a fishway.
Further, as shown in FIG. 15, a method of installing a buffer means on the upstream side of the steel columns 15a and 15b is proposed in order to mitigate the impact caused by the collision of the boulders 60 flowing down during the flood to the steel columns 15a and 15b. (For example, Patent Document 1).

Japanese Patent Application Laid-Open No. 11-323883

  In the sabo dam shown in FIG. 14 as described above, a problem arises when a steel column is damaged by a collision of boulders during a flood.

  Referring to FIG. 15 again, when the boulder 60 collides with the vertical member 16b of the steel column 15a due to flooding, a recessed portion is formed in the vertical member 16b. If the recessed part is less than 10% with respect to the steel pipe diameter of the vertical member 16b, there is no need for repair. However, when the recessed portion reaches 10% or more and less than 40% with respect to the steel pipe diameter, it is necessary to examine the necessity of repair or reinforcement of the longitudinal member 16b by structural inspection. Furthermore, when the recessed part reaches 40% or more with respect to a steel pipe diameter, repair or reinforcement of the vertical member 16b becomes essential.

  As a method for repairing the vertical member 16b, there is a method of newly replacing the vertical member 16b. However, since the foundation of the vertical member 16b is embedded in the foundation concrete 82, it cannot be replaced. On the other hand, for example, when the boulder 60 collides with the cross member 17a and a dent part is formed, the cross member 17a can be replaced by removing the bolt of the flange.

  As another repair method for the vertical member 16b, there is a method of welding a steel plate having a predetermined strength to the surface of the recessed portion. However, when the boulder 60 collides with the repair site, there is a problem in its impact resistance and wear resistance, such as dents and damage again.

  Therefore, in order to prevent in advance the dent of the vertical member 16b due to the collision of the boulder 60, there is a method disclosed in Patent Document 1 in which a buffer means is installed on the upstream side of the steel column. However, this method is applied to a newly installed steel support, and cannot be applied to an existing steel support if it is distorted or deformed. Therefore, it was necessary to repair the dents and damage to the existing steel columns by the method described above.

  The present invention has been made to solve the above-described problems, and can be easily applied to a transmission type sabo dam composed of steel struts, whether newly installed or existing. An object is to provide a structure.

In order to achieve the above object, the invention according to claim 1 is a reinforced sabo dam reinforcing structure, comprising a steel strut constituting the permeable sabo dam, and at least one upstream of the steel strut. And a fixing member that is connected to the buffer member and fixes the buffer member to the steel column . The steel column has a recessed portion. The shock-absorbing member is installed along the outer edge excluding the recessed portion of the steel support, and further includes a room temperature-curing filling material filled between the shock-absorbing member and the recessed portion .

If comprised in this way, a steel support | pillar will be pinched | interposed by a buffer member and a fixing member . Further, the buffer member may have a fixed shape regardless of the state of the steel support.

The invention according to claim 2 is a reinforced structure of a transmission-type sabo dam, a steel support that constitutes the transmission-type sabo dam, a buffer member that covers at least a part of the upstream side of the steel support, It is installed on the downstream side of a part of the column, and includes a fixing member that is connected to the buffer member and fixes the buffer member to the steel column, and a space is formed between the buffer member and the steel column, A room-temperature-curing filling material filled in the space is provided, the steel support has a recessed portion, and the filling member is also filled in the recessed portion .

If comprised in this way, a steel support | pillar will be pinched | interposed by a buffer member and a fixing member. The buffer member is in close contact with the steel support through the filling member. Further, the buffer member may have a fixed shape regardless of the state of the steel support.

According to a third aspect of the present invention, in the configuration of the first or second aspect of the present invention, the buffer member has a U-shape in a plan view, and includes an elastic body and a steel plate embedded in the elastic body. is there.

If comprised in this way, while it becomes the shape which covers a steel support | pillar easily, a steel plate is not exposed but an outer surface has elasticity.

According to a fourth aspect of the invention, in the configuration of the invention according to any one of the first to third aspects , a cover plate is attached to the entire upper surface of the fixing member .

If comprised in this way, the inflow of rainwater between a fixing member and a steel support | pillar will be blocked | prevented.

The invention according to claim 5 is a reinforced structure of a transmission-type sabo dam, a steel column that constitutes the transmission-type sabo dam, a buffer member that covers at least a part of the upstream side of the steel column, It is installed on the downstream side of a part of the column, and includes a fixing member that is connected to the buffer member and fixes the buffer member to the steel column, and a space is formed between the buffer member and the steel column, A room temperature curing type filling material filled in the space is provided, and a cover plate is attached to the entire upper surface of the fixing member .

If comprised in this way, a steel support | pillar will be pinched | interposed by a buffer member and a fixing member. The buffer member is in close contact with the steel support through the filling member. Furthermore, the inflow of rainwater between the fixing member and the steel column is prevented.

According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the invention, the buffer member has a U-shape in plan view, and includes an elastic body and a steel plate embedded in the elastic body .

If comprised in this way, while it becomes the shape which covers a steel support | pillar easily, a steel plate is not exposed but an outer surface has elasticity.

As described above, according to the first aspect of the present invention, since the steel support is sandwiched between the buffer member and the fixing member, attachment and replacement are easy regardless of the shape of the steel support . In addition, since the buffer member may have a fixed shape regardless of the state of the steel support, the strength of the buffer member is maintained, and on-site construction is facilitated, which is advantageous in terms of cost.

According to the second aspect of the present invention, since the steel support is sandwiched between the buffer member and the fixing member, attachment and replacement are easy regardless of the shape of the steel support. Further, since the buffer member is in close contact with the steel support through the filling member, the mounting state of the buffer member is stabilized. Furthermore, since the buffer member may have a fixed shape regardless of the state of the steel support, the strength of the buffer member is maintained, construction on the site is facilitated, and the cost is advantageous.

In addition to the effect of the invention of claim 1 or 2, the invention according to claim 3 has a shape that can easily cover the steel support column, so that the attachment is further facilitated. Further, since the steel plate is not exposed and the outer surface has elasticity, the dustproof effect and the rust prevention effect for the steel plate are improved, and the impact is alleviated by the elastic body.

Invention of claim 4, since in addition to the effect of the invention according to any one of claims 1 to 3, the inflow of rain water is prevented to between the fixed member and the steel strut, steel Durability is improved by protection from column corrosion.

According to the fifth aspect of the present invention, since the steel support is sandwiched between the buffer member and the fixing member, attachment and replacement are easy regardless of the shape of the steel support. Further, since the buffer member is in close contact with the steel support through the filling member, the mounting state of the buffer member is stabilized. Furthermore, since the inflow of rainwater between the fixing member and the steel support is prevented, the durability is improved by protecting the steel support from corrosion and the like.

In addition to the effect of the invention described in claim 5 , the invention described in claim 6 has a shape that can easily cover the steel support column, so that the attachment becomes easier. Further, since the steel plate is not exposed and the outer surface has elasticity, the dustproof effect and the rust prevention effect for the steel plate are improved, and the impact is alleviated by the elastic body.

It is the schematic front view which looked at the sabo dam provided with the reinforcement structure by the 1st Embodiment of this invention from the upstream. It is sectional drawing of the II-II line shown in FIG. FIG. 3 is an enlarged view of a partially broken state of an X portion shown in FIG. 2. It is an expanded sectional view of the IV-IV line shown in FIG. FIG. 5 is an enlarged cross-sectional view taken along line VV shown in FIG. 3. FIG. 6 is an enlarged view of a Y portion shown in FIG. 5. It is the schematic sectional drawing which showed the installation procedure of the reinforcement structure shown in FIG. It is a figure which shows the reinforcement structure by 2nd Embodiment of this invention. It is a figure which shows the reinforcement structure by 3rd Embodiment of this invention. It is an expanded sectional view of the XX line shown in FIG. It is an expanded sectional view of the XI-XI line shown in FIG. It is a figure which shows the reinforcement structure by 4th Embodiment of this invention. It is a figure which shows the reinforcement structure by 5th Embodiment of this invention. It is the schematic front view which looked at the conventional transmission type sabo dam from the upstream. It is sectional drawing of the XV-XV line shown in FIG.

  FIG. 1 is a schematic front view of a sabo dam provided with a reinforcing structure according to a first embodiment of the present invention as viewed from the upstream side, and FIG. 2 is a cross-sectional view taken along line II-II shown in FIG. .

  Referring to these drawings, the main body 81 and the steel posts 15a and 15b in the sabo dam 10 are the same as the sabo dam 80 shown in FIG. 14 of the conventional example. And in the sabo dam 10, the reinforcement structure 11 containing the vertical member 16b of the steel support | pillar 15a is provided. The detailed structure of the reinforcing structure 11 will be described.

  3 is an enlarged view of a partially broken state of the X portion shown in FIG. 2, FIG. 4 is an enlarged cross-sectional view taken along line IV-IV shown in FIG. 3, and FIG. FIG. 6 is an enlarged sectional view of the V line, and FIG. 6 is an enlarged view of a Y portion shown in FIG.

  With reference to these drawings, the reinforcing structure 11 includes a vertical member 16 made of an inclined circular steel pipe, a buffer member 21 that covers a part of the upstream side of the vertical member 16 (left side in FIG. 3), and a buffer member 21. The fixing member 31 connected to the buffer member 21 is mainly configured on the downstream side (the right side in FIG. 3) of the vertical member 16 corresponding to.

  The buffer member 21 is formed in a U-shape in plan view, and includes an elastic body 22 made of a synthetic rubber such as natural rubber (NR) and styrene butadiene rubber (SBR), or a synthetic resin such as polyurethane. It is comprised from the steel plate 23 embedded. In addition, the thickness of the steel plate 23 is set to be equal to or greater than the strength corresponding to the design external force at the construction site of the sabo dam.

  The buffer member 21 is installed so as to cover the upstream side of the longitudinal member 16 so that the U-shaped end portion in plan view is on the downstream side. Since the buffer member 21 having a U-shape in a plan view has a shape that easily covers the vertical member 16, the mounting is facilitated in installing the reinforcing structure 11 to be described later. Furthermore, the inner surface of the buffer member 21 in plan view is set to be larger than the outer surface of the longitudinal member 16. Therefore, a space is formed between the buffer member 21 and the longitudinal member 16 in the installed state.

  Further, since the entire surface of the steel plate 23 is covered with the elastic body 22, the steel plate 23 is not exposed to the outer surface. Therefore, the dustproof effect and rust prevention effect for the steel plate 23 are improved. Therefore, the thickness of the steel plate 23 does not need to be a thickness that takes into account the wear and rusting margins unlike the longitudinal members 16 exposed to the outside, which is advantageous in terms of cost.

  Furthermore, since the elastic body 22 is disposed on the outer surface of the buffer member 21, an impact caused by a collision such as a boulder is alleviated by the elastic body 22. In addition, the elastic body 22 located on this outer surface can add impact resistance corresponding to the conditions of the construction site of a sabo dam by changing the thickness variously.

  The fixing member 31 is made of steel and is connected to each of the rectangular back plate 32 extending in the longitudinal direction of the vertical member 16 and both ends of the short direction of the back plate 32 (vertical direction in FIGS. 4 and 5). A rectangular side plate 33a, 33b extending upstream, a plurality of middle plates 34 connected at right angles to the inner surfaces of the back plate 32 and the side plates 33a, 33b and arranged at equal intervals in the longitudinal direction, and the back plate 32 And the cover plate 35 installed at the upper ends of the side plates 33a and 33b.

  A rubber 37 is lined on the outer surface of the back plate 32 and the side plates 33a and 33b. Therefore, since corrosion of each member constituting the fixing member 31 is prevented, the durability of the fixing member 31 is improved. And such a fixing member 31 exhibits a big effect especially as a corrosion countermeasure in the acidic river below PH4 with the steel plate 23 embed | buried under the elastic body 22 of the buffer member 21. FIG. Instead of the lining processing of the rubber 37, the outer side surfaces of the back plate 32 and the side plates 33a and 33b may be rust-proofed or plated.

  Further, the fixing member 31 is installed so that the center portion of each of the intermediate plates 34 abuts the vertical member 16. Further, a connecting member 41 made of a steel plate is disposed between the upstream portion of each of the side plates 33a, 33b and the longitudinal member 16, and the connecting member 41, the longitudinal member 16, and each of the side plates 33a, 33b are welded. Has been processed. As a result, the fixing member 31 is fixed to the vertical member 16, so that the installation position of the fixing member 31 with respect to the vertical member 16 is stabilized. That is, the installation position of the buffer member 21 connected to the fixing member 31 is stable, and the buffer member 21 always covers the upstream side of the vertical member 16 without rotating around the vertical member 16, so that a stable reinforcing effect is expected. I can do it. Furthermore, nuts 42 are welded and fixed to the respective inner surfaces of the side plates 33a and 33b at locations corresponding to connecting portions with the buffer member 21 described later.

  The lid plate 35 is welded to the upper ends of the back plate 32 and the side plates 33a and 33b of the fixing member 31, and is also welded to the longitudinal member 16. Accordingly, since the entire upper surface of the fixing member 31 is covered with the cover plate 35, the inflow of rainwater or the like between the fixing member 31 and the longitudinal member 16 is prevented. Therefore, since it protects from the corrosion of the vertical member 16 by the inflow of rain water etc., the corrosion of the fixing member 31, etc., durability of the reinforcement structure 11 improves.

  The buffer member 21 is connected to the nut 42 of the fixing member 31 via the washer 28 by a bolt 27 at the end of the U shape in plan view. The head of the bolt 27 is covered with a cylindrical rubber 29, and the upper surface of the rubber 29 is located on the same plane as the buffer member 21. Accordingly, there is no possibility that a direct impact is applied to the bolt 27, so that the durability of the bolt 27 is improved. Further, since the rubber 29 is cylindrical, the gap 47 between the buffer member 21 and the elastic body 22 can be minimized. Therefore, the possibility that sand or the like is inadvertently collected in the gap is reduced, so that the bolts 27 can be easily removed when the buffer member 21 or the like is damaged. When tightening the bolt 27, a hexagon wrench or the like may be inserted into the center portion to rotate the bolt 27.

  The space between the buffer member 21 and the vertical member 16 is filled with a filling material 44 made of resin and aggregate. Therefore, the buffer member 21 is in close contact with the longitudinal member 16 via the filling material 44. Therefore, the mounting state of the buffer member 21 is stabilized and the strength is improved.

  Next, the installation procedure of the reinforcing structure 11 will be described.

  FIG. 7 is a schematic cross-sectional view showing the installation procedure of the reinforcing structure shown in FIG.

  First, referring to (1), on the downstream side (right side in the figure) of the vertical member 16 of the existing steel support column, the center part of the middle plate 34 of the fixing member 31 is arranged so as to contact the vertical member 16. Position it.

  Next, with reference to (2), the connection member 41 is arrange | positioned between each of the upstream part of the side plates 33a and 33b of the fixed member 31 positioned, and the vertical member 16, and these are welded. Then, the fixing member 31 is fixed to the vertical member 16. Thereafter, a cover plate (not shown) is disposed on the upper surface of the fixing member 31 and attached to the fixing member 31 and the longitudinal member 16 by welding.

  Next, referring to (3), the buffer member 21 having a U-shape in a plan view is installed so that each end thereof is positioned on each of the side plates 33a and 33b of the fixing member 31. Then, the upstream side of the longitudinal member 16 is covered by the buffer member 21. Thus, since the buffer member 21 is formed in a U shape in a plan view, it can be easily attached to the vertical member 16. As described above, since the inner surface of the buffer member 21 is set to be larger than the outer surface of the vertical member 16, a space is formed between the buffer member 21 and the vertical member 16 in the installed state.

  Next, referring to (4), each of the end portions of the buffer member 21 and each of the side plates 33a, 33b of the fixing member 31 are connected by bolts 27a, 27b. Thereafter, molds (not shown) are installed above and below the buffer member 21, and the space 39 between the buffer member 21 and the longitudinal member 16 is filled with a room temperature curing type filling material 44 made of resin and aggregate. .

  Next, referring to (5), after the filled filling material 44 is cured, the reinforcing structure 11 is completed by removing a mold frame (not shown).

  Thus, the vertical member 16 of the reinforcing structure 11 is attached so as to be sandwiched between the buffer member 21 and the fixing member 31. Therefore, it can be easily attached to an existing steel column. That is, it can be easily attached regardless of the shape of the steel support.

  Moreover, since the buffer member 21 is detachably connected to the fixing member 31, the buffer member 21 can be easily replaced when the buffer member 21 is damaged.

  FIG. 8 is a view showing a reinforcing structure according to the second embodiment of the present invention, and corresponds to FIG. 5 of the first embodiment.

  Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  Referring to the drawing, in the reinforcing structure 12 according to this embodiment, the shape of the longitudinal member 16 is greatly different. That is, the vertical member 16 is formed with a recessed portion 19 generated by a collision of boulders or the like. The filling material 44 between the buffer member 21 and the vertical member 16 is also filled in the recessed portion 19.

  In the reinforcing structure 12 configured as described above, the buffer member 21 can have a constant shape regardless of the state of the steel support such as the vertical member 16 having the recessed portion 19. Accordingly, the set strength of the buffer member 21 is maintained, and construction on the site is facilitated. Moreover, since it is not necessary to make the shape of the buffer member 21 correspond to the shape of the steel column, the reinforcing structure 12 is advantageous in terms of cost.

  In addition, the other effect in the reinforcement structure 12 of this embodiment is the same as that of the reinforcement structure of 1st Embodiment mentioned above.

  FIG. 9 is a view showing a reinforcing structure according to a third embodiment of the present invention, which corresponds to FIG. 3 of the first embodiment, and FIG. 10 is an XX shown in FIG. FIG. 11 is an enlarged sectional view of the line, and FIG. 11 is an enlarged sectional view of the XI-XI line shown in FIG. 9.

  With reference to these drawings, the reinforcing structure 13 includes a vertical member 16 made of an inclined circular steel pipe, a buffer member 55 covering a part of the upstream side of the vertical member 16, and a vertical member 16 corresponding to the buffer member 55. It is mainly comprised from the fixing member 75 connected to the buffer member 55 installed in the downstream of this.

  The buffer member 55 has substantially the same structure as the buffer member of the first embodiment, but its shape is slightly different. The buffer member 55 is formed so that the inner surface thereof is the same size as the outer surface of the longitudinal member 16. Therefore, no space is generated between the buffer member 55 and the longitudinal member 16 in the installed state. Therefore, since the buffer member 55 can be attached along the shape of the vertical member 16, it becomes easy.

  The fixing member 75 is made of steel, and has a rectangular back plate 76 extending in the longitudinal direction of the vertical member 16 and a rectangular side plate 77a extending upstream, connected to each of both ends in the short direction of the back plate 76, 77b and a cover plate 78 installed at the upper ends of the back plate 76 and the side plates 77a and 77b. A rubber 37 is lined on the outer side surfaces of the back plate 76 and the side plates 77a and 77b.

  Reinforcing plates 79a and 79b are fixed to the inner surfaces of the side plates 77a and 77b of the fixing member 75 by welding to locations corresponding to the connecting portions with the buffer member 55, respectively. Further, nuts (not shown) are welded to the inner surfaces of the reinforcing plates 79a and 79b. The both ends of the buffer member 55 are connected to nuts (not shown) by bolts 27a and 27b via side plates 77a and 77b and reinforcing plates 79a and 79b of the fixing member 75, respectively.

  The lid plate 78 is welded to the upper ends of the back plate 76 and the side plates 77a and 77b, and is also welded to the longitudinal member 16. As a result, the fixing member 75 is fixed to the vertical member 16, so that the installation position of the fixing member 75 with respect to the vertical member 16 is stabilized.

  The installation procedure of the reinforcing structure 13 is the same as that of the first embodiment shown in FIG. 7 except for the fixing of the side plate and the vertical member of the fixing member via the connecting member and the filling of the filling material. Are almost identical. Therefore, the reinforcing structure 13 exhibits the same effects as the reinforcing structure according to the first embodiment except for the effect of the filling material.

  FIG. 12 is a view showing a reinforcing structure according to the fourth embodiment of the present invention, and corresponds to FIG. 11 of the third embodiment.

  Note that the description is basically the same as that according to the third embodiment, and thus the difference will be mainly described.

  Referring to the figure, in the reinforcing structure 14 according to this embodiment, the shape of the longitudinal member 16 is greatly different. That is, the vertical member 16 is formed with a recessed portion 19 generated by a collision of boulders or the like. The space between the buffer member 55 and the recessed portion 19 of the vertical member 16 is filled with the filling material 44. The filling material 44 may be filled by the same method as in the first embodiment shown in FIG.

  In the reinforcing structure 14 configured as described above, the buffer member 55 is formed in a fixed shape regardless of the state of the steel column such as the vertical member 16 having the recessed portion 19 and the inner surface of the buffer member 55 is brought into a close contact state. I can do it. Accordingly, the set strength of the buffer member 55 is maintained, and the construction at the site becomes easy. Further, there is no need to deform the buffer member 55 according to the shape of the steel support column, which is advantageous in terms of cost.

  In addition, the other effect in the reinforcement structure 14 of this embodiment is the same as that of the reinforcement structure of 3rd Embodiment mentioned above.

  FIG. 13 is a view showing a reinforcing structure according to a fifth embodiment of the present invention, and corresponds to FIG. 9 of the third embodiment.

  Referring to the drawing, the reinforcing structure 20 includes buffer members 56a to 56c having substantially the same shape as the buffer member and the fixing member according to the third embodiment, and fixing members 58a to 58c. That is, a plurality of sets each including the buffer members 56 a to 56 c and the fixing members 58 a to 58 c are continuously installed on the vertical member 16 in the vertical direction.

  And each upper surface and lower surface of buffer member 56a-56c are formed so that it may become a horizontal direction in an installation state. That is, the upper surface and the lower surface of each of the buffer members 56a to 56c are inclined by an angle θ with respect to the axis 70 of the inclined vertical member 16. Each of the fixing members 58a to 58c is formed so as to correspond to each of the buffer members 56a to 56c.

  Further, the fixing member 58c positioned at the lowermost portion is provided with a cover plate (not shown) on the upper surface thereof as shown in FIG. 10, and the cover plate is welded to the fixing member 58c and the vertical member 16. Therefore, in the lowermost group consisting of the buffer member 56c and the fixing member 58c, it is fixed to the vertical member 16 in a non-rotating state.

  On the other hand, the fixing member 58b is not provided with a cover plate on its upper surface. That is, the buffer member 56b and the fixing member 58b maintain the installation state only by frictional resistance caused by sandwiching the longitudinal member 16 with each other. The same applies to the buffer member 56a and the fixing member 58a. In other words, except for the lowermost pair, there is a risk of rotating around the shaft 70 of the vertical member 16 as indicated by the arrow in the figure due to a collision of boulders or the like.

  However, the lower surface of the buffer member 56b and the upper surface of the buffer member 56c are formed in a horizontal direction. Therefore, for example, when the buffer member 56b tries to rotate, the lower surface of the buffer member 56b and the upper surface of the buffer member 56c come into contact with each other, and therefore the rotation of the buffer member 56b is prevented by the buffer member 56c in the non-rotating state. The same applies to the buffer member 56a because the rotation of the buffer member 56a is blocked by the buffer member 56c in the non-rotating state via the buffer member 56b.

  Therefore, in the reinforcing structure 20, the unfixed buffer members 56 a and 56 b and the fixing members 58 a and 58 b do not rotate around the vertical member 16. Therefore, since all of the buffer members 56a to 56c always face the upstream side of the longitudinal member 16, the reliability of the reinforcing effect of the reinforcing structure 20 is improved.

  In addition, the effect in each group which consists of each of buffer member 56a-56c and each of fixing member 58a-58c exhibits the same effect as the reinforcement structure by 3rd Embodiment.

  In each of the above embodiments, the vertical member of the steel column of the reinforcing structure is an inclined circular steel pipe. For example, the vertical member of the steel column has other shapes such as an upright quadrangular columnar member. You may be comprised with the member. Needless to say, the reinforcing structure is applicable not only to the vertical member but also to the cross member.

  In each of the above embodiments, the reinforcing structure is applied to an existing steel support. However, it is needless to say that the reinforcement structure can also be applied to a new steel support.

  Further, in each of the above embodiments, the buffer member is formed in a U shape in plan view. However, if the buffer member is formed so as to cover at least a part of the upstream side of the longitudinal member, the buffer member has another shape. Also good.

  Further, in each of the above embodiments, the fixing member is formed in a specific shape, but is installed on the downstream side of the vertical member corresponding to the buffer member, and is connected to the buffer member to fix the buffer member to the vertical member. Any other shape may be used.

  Furthermore, in each of the above embodiments, the buffer member is composed of an elastic body and a steel plate embedded in the elastic body.For example, if the material has a buffer function, such as only the elastic body or only the steel plate, It may be composed of other materials.

  Further, in each of the above embodiments, the elastic body of the buffer member is formed of a synthetic rubber made of, for example, styrene butadiene rubber (SBR). EPT) or the like may be contained.

  Furthermore, in the first to fourth embodiments, the fixing member includes the cover plate, but the cover plate may not be provided.

  Furthermore, in said 1st, 2nd and 4th embodiment, although the inside filling material which consists of resin and an aggregate is filled between the buffer member and the vertical material, the inside filling material is normal temperature hardening type | mold. If so, for example, it may be composed only of resin without including aggregates. Alternatively, the filling material may be omitted.

  Furthermore, in the second and fourth embodiments described above, there is only one recessed portion formed in the longitudinal member, but the present invention can be similarly applied even when there are a plurality of recessed portions. Further, the present invention is not limited to the dent and can be similarly applied to a vertical member in which a deformed portion having an uneven shape is formed.

  Furthermore, in the second and fourth embodiments, the filling material is filled in the recessed portion of the vertical member. For example, the recessed portion of the vertical member is previously made of a material corresponding to the filling material. After repairing and smoothing the surface of the longitudinal member, a buffer member may be attached. In addition, in this specification, what was formed in this way shall be included as a kind of filling of a filling material.

DESCRIPTION OF SYMBOLS 10 ... Sabo dam 11-14, 20 ... Reinforcement structure 15 ... Steel support | pillar 16 ... Vertical member 17 ... Cross member 19 ... Recessed part 21, 55, 56 ... Buffer member 22 ... Elastic body 23 ... Steel plate 31, 58, 75 ... Fixing member 35 ... Lid plate 39 ... Space 44 ... Filling material In addition, the same code | symbol in each figure shows the same or an equivalent part.

Claims (6)

A reinforced sabo dam structure,
Steel struts constituting the transmission type sabo dam,
A buffer member covering at least a part of the upstream side of the steel support;
A fixing member that is installed on the downstream side of the part of the steel column and is connected to the buffer member to fix the buffer member to the steel column ;
The steel post has a recessed portion;
The buffer member is installed along an outer edge excluding the recessed portion of the steel column,
Furthermore, the reinforcement structure of the transmission-type sabo dam with the normal temperature hardening type filling material filled between the said buffer member and the said recessed part . A reinforced sabo dam structure,
Steel struts constituting the transmission type sabo dam,
A buffer member covering at least a part of the upstream side of the steel support;
A fixing member that is installed on the downstream side of the part of the steel column and is connected to the buffer member to fix the buffer member to the steel column ;
A space is formed between the buffer member and the steel column,
Furthermore, a room temperature curing type filling material filled in the space,
The steel post has a recessed portion;
The stuffed sabo dam reinforcing structure , in which the filling member is also filled in the recess . The reinforcing structure for a transmission type sabo dam according to claim 1 or 2, wherein the buffer member has a U-shape in a plan view and includes an elastic body and a steel plate embedded in the elastic body. The reinforced sabo dam reinforcing structure according to any one of claims 1 to 3, wherein a cover plate is attached to the entire upper surface of the fixing member. A reinforced sabo dam structure,
Steel struts constituting the transmission type sabo dam,
A buffer member covering at least a part of the upstream side of the steel support;
A fixing member that is installed on the downstream side of the part of the steel column and is connected to the buffer member to fix the buffer member to the steel column ;
A space is formed between the buffer member and the steel column,
Furthermore, a room temperature curing type filling material filled in the space,
A reinforced sabo dam reinforcing structure in which a cover plate is attached to the entire upper surface of the fixing member . The reinforced structure of the transmission type sabo dam according to claim 5 , wherein the buffer member has a U-shape in a plan view and includes an elastic body and a steel plate embedded in the elastic body.

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