JP5438600B2 - Steel tower abdomen replacement method and abdomen exchange apparatus - Google Patents

Description

  The present invention relates to a steel tower restoration method and an abdominal material exchanging apparatus for exchanging an abdominal material in which a tensile load or a compressive load is applied by an external force from an overhead wire or the like.

  As a method and apparatus for exchanging abdominal material of this kind of steel tower, it is made to correspond to the abdominal material to be replaced among the abdominal materials such as the horizontal material and the diagonal material connecting the main pillar materials at two positions adjacent to each other at intervals. In this way, the main column members adjacent to each other at a distance are connected with a hydraulic jack, and the load acting on the abdomen is replaced with a shoulder by the hydraulic jack, so that the abdomen can be replaced. Known (for example, Patent Document 1).

  In the above-mentioned steel tower bellows replacement method and apparatus, by using a manual pump and a switching valve, the pressure of the hydraulic oil in the hydraulic jack is adjusted, thereby replacing the load on the bellows with the hydraulic jack. That makes it possible to replace the belly.

  However, in the above-described method and apparatus for exchanging the abdominal material of a steel tower, as the pressure of the hydraulic oil supplied to the hydraulic jack increases, the hydraulic jack, the switching valve that supplies the hydraulic oil to the hydraulic jack, and the like As a result, the amount of leakage of hydraulic oil increases. For this reason, if the load applied to the abdominal material is replaced with a hydraulic jack and left as it is, the pressure in the hydraulic jack decreases due to the internal leak of the hydraulic oil, and the load is released again on the abdominal material that should have been released. As a result, it becomes impossible to replace the abdomen. For this reason, during the replacement work of the abdomen, the load applied to the hydraulic jack must always be adjusted to a constant state by always operating the manual pump and the switching valve, and the replacement work of the abdomen is extremely troublesome. There was a problem of being.

JP 2001-268758 A

  The present invention has been made in view of the above circumstances, and after replacing the load applied to the abdomen, the state can be maintained without any operation, and the abdomen can be easily replaced. An object of the present invention is to provide an abdominal material exchanging method and an abdominal material exchanging apparatus for a steel tower.

In order to solve the above-mentioned problems, the invention of the method for exchanging the steel tower bellows according to claim 1 is characterized in that the first diagonal members having different inclination directions as the bellows connecting the main pillar materials adjacent to each other at intervals, and The first diagonal member has at least a second diagonal member, and a tensile load acts on the first diagonal member due to an external force, and a compressive load acts on the second diagonal member. A steel tower abdomen replacement method for enabling at least replacement of a material and the second diagonal material, wherein the adjacent main column material is located at a lower side at a portion corresponding to a lower end side of the first diagonal material. Connected by a horizontal reinforcing jig, and connected to the adjacent main column member by an upper horizontal reinforcing jig at a portion corresponding to the upper end side of the first diagonal member, and extended along the first diagonal member. after connecting the adjacent primary post member by standing wire, the lower horizontal reinforcing jig及The fixed spacing between adjacent primary post member by a distance correcting jig mechanical provided on each of the upper horizontal reinforcing jig, the tension on the wire in a jig attracted mechanical provided in the middle of the wire by adding, utilizing Rukoto the tensile force moves towards at least said position before being transmitted external force the first diagonal member as a compressive force to the first diagonal members through the respective main pillar members Then, after the tensile load acting on the first diagonal member is released, the first diagonal member is replaced with a new first diagonal member, and the tension acting on the wire is changed to each main pillar member. , utilizing Rukoto transmitted by moving the second diagonal member in the direction of the front external force acting as a tensile force through said lower horizontal reinforcing jig and the upper horizontal reinforcement jig to the second diagonal materials And after releasing the compressive load acting on the second diagonal member, It is characterized by replacing the second diagonal member to a new second diagonal materials. Note that the second diagonal member may be replaced after the first diagonal member is replaced, or the first diagonal member may be replaced after the second diagonal member is replaced. Further, the first diagonal member and the second diagonal member may be replaced at the same time.

  According to a second aspect of the invention, there is provided a method of exchanging abdominal material for a steel tower according to the first aspect, wherein the mechanical distance correction treatment is provided in each of the lower horizontal reinforcing jig and the upper horizontal reinforcing jig. The tensile load and the compressive load acting on each of the first diagonal member and the second diagonal member are also released by adjusting the interval between the adjacent main column members by means of a tool. .

According to a third aspect of the invention, there is provided at least a first diagonal member and a second diagonal member having different inclination directions as a bellows connecting adjacent main pillar members at intervals. The first diagonal member and the second diagonal member in the steel tower construction surface where a tensile load acts on the first diagonal member due to the action of an external force and a compressive load acts on the second diagonal member. An abdominal material exchanging device for a steel tower for at least exchanging the lower horizontal reinforcing jig for connecting the adjacent main column members at a portion corresponding to the lower end side of the first diagonal member; An upper horizontal reinforcing jig for connecting the adjacent main pillar members at a portion corresponding to the upper end side of the first diagonal member, and extending along the first diagonal member, A wire to be connected and a mechanical pulling jig provided in the middle of the wire to generate tension on the wire Ri Do Te, the lower horizontal reinforcing jig and the upper horizontal reinforcement jig is made comprises a coupling member for coupling to the respective main pillar material, and a connecting bar to be passed over to the respective connecting members, the connecting member It is characterized that you have provided a liner plate supporting stably the connecting bar in the horizontal direction.

  According to a fourth aspect of the invention of the steel tower abdominal material exchanging apparatus according to the fourth aspect, in the invention according to the third aspect, each of the lower horizontal reinforcing jig and the upper horizontal reinforcing jig includes the adjacent main column member. A mechanical interval correction jig for adjusting the interval is provided.

According to the first aspect of the invention, the first diagonal member to be replaced is moved toward the position before the external force is applied by applying tension to the wire with the mechanical pulling jig , and the first The tensile load acting on the diagonal material can be released. In this case, the tension applied to the wire is not obtained by hydraulic pressure but is obtained by a mechanical pulling jig, so that even if left as it is, the tensile load does not act again on the first diagonal member. That is, after the load applied to the first diagonal member as the abdominal material is replaced by a wire, the state can be maintained without any operation, so that the first diagonal member can be easily replaced with a new one. Can be exchanged.

Moreover, since the tension of the wire is transmitted to the second diagonal member as a tensile force, the second diagonal member is moved toward the position before the external force action , and the compressive load of the second diagonal member is increased. Can also be released. In this case as well, after the compressive load of the second diagonal member is released, the released state can be maintained without any operation, so the second diagonal member can be easily replaced with a new one. can do.

  According to the second aspect of the present invention, the tensile load and the compression acting on each of the first diagonal member and the second diagonal member can also be obtained by adjusting the interval between the adjacent main column members by the interval correction jig. Since the load is released, the tensile load and the compressive load acting on the first diagonal member and the second diagonal member can be released more easily. That is, the first diagonal member and the second diagonal member can be replaced more easily.

  According to the third aspect of the present invention, the lower horizontal reinforcing jig for connecting the adjacent main column members at the portion corresponding to the lower end side of the first diagonal member, and the upper end side of the first diagonal member. And an upper horizontal reinforcing jig for connecting the adjacent main pillar members at the part to be attached, so that the upper and lower horizontal reinforcing jigs and the upper horizontal reinforcing member for the upper and lower parts of the first diagonal member in the adjacent main pillar member are provided. Can be reinforced with a jig.

  In addition, a wire that extends along the first diagonal member and connects adjacent main pillar members, and a mechanical drawing jig that is provided in the middle of the wire and generates tension on the wire are provided. By generating tension on the wire with the drawing jig, this tension can be transmitted as a compressive force to the first diagonal member via at least the main pillar members. For this reason, the tensile load of the first diagonal member can be released. In addition, since the tension generated in the wire is transmitted as a tensile force to the second diagonal member via each main column member, the lower horizontal reinforcing jig and the upper horizontal reinforcing jig, the second diagonal member. The compressive load of can also be released.

The pulling jig that applies tension to the wire is not a hydraulic type but a mechanical type, so even if the wire is left with the tension applied, the tension may change. Absent. That is, the tensile load and the compressive load acting on the first diagonal member and the second diagonal member can be maintained in a released state. Therefore, each of the first diagonal member and the second diagonal member can be easily replaced with a new one. In addition, the lower horizontal reinforcing jig and the upper horizontal reinforcing jig include a connecting member that is connected to each main column member, and a connecting bar that spans the connecting members, and the connecting member extends the connecting bar in the horizontal direction. Since it has a liner plate that supports it stably, even when it is attached to a main pillar material standing at a predetermined inclination angle, by using a liner plate with an inclination angle corresponding to the inclination angle of the main pillar material, The connecting bar can be stably supported in a horizontal state.

  According to the invention described in claim 4, each of the lower horizontal reinforcing jig and the upper horizontal reinforcing jig is provided with a mechanical interval correction jig that adjusts the interval between the adjacent main column members. The tensile load of the first diagonal member and the compressive load of the second diagonal member can also be released by adjusting the interval between the adjacent main column members by the interval correction jig. Accordingly, since the tensile load and the compressive load acting on the first diagonal member and the second diagonal member can be released more easily, the first diagonal member and the second diagonal member can be replaced more easily. Can do.

It is a front view which shows the abdominal material exchange apparatus of the steel tower shown as Example 1 of this invention. It is a figure which shows the lower horizontal reinforcement jig | tool (upper horizontal reinforcement jig | tool) in the bell tower replacement | exchange apparatus of the steel tower, Comprising: (a) is a front view, (b) is a top view. It is a figure which shows the connection part with the other main pillar material of the lower horizontal reinforcement jig | tool (upper horizontal reinforcement jig | tool) in the bell tower replacement | exchange apparatus of the steel tower, (a) is a principal part front view, b) is a view in the direction of arrow X in (a). It is a front view which shows the abdominal material exchange apparatus of the steel tower shown as Example 2 of this invention. It is a figure which shows the lower horizontal reinforcement jig | tool (upper horizontal reinforcement jig | tool) in the bell tower replacement | exchange apparatus of the steel tower, (a) is a front view, (b) is a top view, (c) is It is sectional drawing which follows the CC line of (a), (d) is a principal part top view of (b), (e) is sectional drawing which shows the connection state of a 2nd connection bar and a connection member. Yes, (f) is a F arrow view of (a).

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated in detail based on an Example.

  As shown in FIG. 1 to FIG. 3, the abdominal material exchanging device 1 for the steel tower shown in the first embodiment is different in the inclination direction as the abdominal material that connects the main pillar materials P at two positions adjacent to each other at intervals. At least one diagonal member S1 and a second diagonal member S2 (in this example, it also has a horizontal member H (see FIG. 1)), and a horizontal component load W from an overhead wire (not shown) such as an electric wire. At least the first diagonal material S1 and the second diagonal material in the steel tower construction surface A in which a tensile load acts on the first diagonal material S1 and a compressive load acts on the second diagonal material S2 by the action of the external force possessed. S2 can be replaced (in this example, the horizontal member H can also be replaced).

  That is, the abdominal material exchanging device 1 of the steel tower is a portion corresponding to the lower end side of the first diagonal material S1, and the lower horizontal reinforcing jig 2 for connecting the adjacent main pillar materials P and the first diagonal material S1. The upper horizontal reinforcing jig 3 that connects the adjacent main pillar materials P at the portion corresponding to the upper end side of the wire, and the wire 4 that extends along the first diagonal material S1 and connects the adjacent main pillar materials P. And a mechanical drawing jig (not shown) that is provided in the middle of the wire 4 and generates tension on the wire 4. Each of the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3 has a mechanical interval correction jig 24 for adjusting the interval between the adjacent main column members P as shown in FIG. Is provided.

  In addition, the steel tower T1 shown in FIG. 1 starts up four (or many) main pillar members P with each vertex portion of a square (or rectangular or other polygonal shape) as a base portion in plan view, Two main pillar materials P adjacent to each other are connected by abdominal materials such as a first diagonal material S1, a second diagonal material S2, and a horizontal material H. And between each two adjacent main pillar materials P is a steel tower construction surface A. FIG. 1 shows a view of the steel tower construction surface A in which a tensile load is applied to the first diagonal material S1 and a compressive load is applied to the second diagonal material S2. The steel tower T1 is a so-called steel pipe steel tower in which the main pillar material P is constituted by a steel pipe.

  The first diagonal material S1 is connected via an intermediate plate M so that two of them extend in a straight line, and the upper end portion of the first diagonal material S1 positioned above the first diagonal material S1 is a gusset plate P1. Is connected to one main pillar material P, and the lower end portion of the first diagonal member S1 located below is connected to the other main pillar material P via a gusset plate P1. That is, the first diagonal material S1 is inclined so as to be gradually displaced downward at an angle of about 45 degrees from left to right. The first diagonal member S1 is detachably connected to the gusset plate P1 and the intermediate plate M by a plurality of bolts and nuts. In FIG. 1, only the bolt B is shown with a reference numeral.

  The second diagonal S2 is inclined so as to be gradually displaced upward at an angle of about 45 degrees from the left to the right, and the first diagonal S1 is different except that the inclination direction is different. It is configured in the same way.

  Further, the horizontal member H is formed by a single member extending in the horizontal direction, an intermediate portion thereof is fixed to the intermediate plate M by welding or the like, and each end portion is connected to each main through the gusset plate P1. It is connected to the pillar material P. The horizontal member H and the gusset plate P1 are also connected by a plurality of bolts and nuts. Also in this case, only the bolt B is shown with a reference numeral.

  The lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3 are both configured with the same structure. Therefore, the configuration will be described using the lower horizontal reinforcing jig 2. That is, as shown in FIG. 2, the lower horizontal reinforcing jig 2 is configured to be attached to a main pillar material P made of steel pipe, and is connected to one main pillar material P. A first connecting member 21 and a second connecting member 22 for connecting the other main pillar member P, two connecting bars 23 spanned between the first connecting member 21 and the second connecting member 22, and the above-mentioned The gap correction jig 24 is provided.

  The first connecting member 21 protrudes from the pair of fixing portions 21a and a pair of fixing portions 21a that are fixed to the main pillar material P by pressing the outer peripheral surface of one main pillar material P from the outside. Supporting plate 21b, liner plate 21c for stably supporting connecting bar 23 in the horizontal direction by installing on each supporting plate 21b, and connecting bar 23 in the axial direction by installing on each liner plate 21c. The bearing part 21d supported slidably is provided.

  Each fixing portion 21a is composed of a semi-arc-shaped cylinder, and each cylinder is applied to the outer peripheral surface of the main pillar material P, and then these are fixed to a plurality of bolts and nuts (in FIG. 2). By connecting with the bolt B only), the outer peripheral surface of the main pillar material P is pressed, and the connection with the main pillar material P is made strong.

  Both the liner plate 21c and the bearing portion 21d are fixed to the support plate 21b with a plurality of bolts and nuts (only the bolt B is shown in FIG. 2). The liner plate 21c holds the axis of the bearing hole in the bearing portion 21d in the horizontal direction, and the bearing portion 21d can support the connecting bar 23 slidably in the horizontal direction.

  As shown in FIGS. 2 and 3, the second connecting member 22 protrudes from a pair of fixing portions 22a that are fixed by pressing the outer peripheral surface of the other main pillar member P from the outside, and the fixing portions 22a. And a liner plate 22c that is installed on each support plate 22b and stably supports the connecting bar 23 in the horizontal direction. The fixing portion 22a, the support plate 22b, and the liner plate 22c of the second connecting member 22 are configured in the same manner as the fixing portion 21a, the supporting plate 21b, and the liner plate 21c of the first connecting member 21 and have compatibility. ing.

  The connecting bar 23 is configured such that its axial length can be adjusted by connecting a plurality of steel pipes coaxially with bolts and nuts at the flange portion at the end thereof, and one end portion in the longitudinal direction thereof. A bracket 23a is provided at the other end. One end of the connecting bar 23 is connected to the bridging material 25 via the bracket 23a so that two bars can be arranged in parallel so as to sandwich the one and the other main pillar materials P together. The other end is connected to the support plate 22b of the second connecting member 22 via the bracket 23a via the liner plate 22c. The bracket 23a at one end and the bridging material 25 are connected by a plurality of bolts and nuts, and the bracket 23a at the other end, the liner plate 22c, and the support plate 22b are also a plurality of bolts and nuts. It comes to be connected with. In FIGS. 2 and 3, only the bolt B is shown with a reference numeral.

  Further, as shown in FIG. 2, the connecting bar 23 is slidably supported by a bearing portion 21 d of the first connecting member 21 at a predetermined portion in the longitudinal direction, and is connected to the bridging material 25. The part is located outside between the one and the other main pillar material P.

  Here, one liner plate 21c is in a state in which the connecting bar 23 is supported in the horizontal direction by the bearing portion 21d in a state where the first connecting member 21 is fixed to one main pillar member P inclined at a predetermined angle. The thickness is formed so as to gradually change at a predetermined angle. The other liner plate 22c is similarly formed. However, one liner plate 21c supports the connecting bar 23 horizontally by being inserted between the support plate 21b and the bearing portion 21d, whereas the other liner plate 22c is provided with the second connecting member 22 of the second connecting member 22. The connecting bar 23 is horizontally supported by being inserted between the support plate 22b and the bracket 23a.

  Further, each support plate 21b of the first connecting member 21 is formed with a first through hole 21e at a position corresponding to the inside between the one and the other main pillar members P as shown in FIG. In addition, a second through hole 21f is formed at a position corresponding to the outside between the main pillar materials P. Similarly to the support plates 21b of the first connection member 21, the first through holes 22e and the second through holes 22f are formed in the support plates 22b of the second connection member 22 as well. That is, the first connecting member 21 and the second connecting member 22 are common also in terms of the through holes 21e, 21f, 22e, and 22f.

  In addition, two through holes 25a are formed in the bridging material 25 at positions close to one main pillar material P side. And two through-holes 21e, 21f, 22e, 22f, and 25a each provided in two are straight lines passing through the axial centers of the first connecting member 21 and the second connecting member 22 in the plan view shown in FIG. It is formed so as to be symmetric with respect to C.

  The interval correction jig 24 includes two support plates 21b of the first connecting member 21 and two support plates 21b of the second connecting member 22 connected in parallel using the first through holes 21e and 22e. It has an inner wire 24a, and has two outer wires 24b that connect each support plate 21b of the first connecting member 21 and the bridging material 25 using the first through hole 21f and the through hole 25a. Further, a mechanical inner drawing jig (not shown) provided in the middle of each inner wire 24a and a mechanical outer drawing jig (not shown) provided in the middle of each outer wire 24b. Z).

  The inward drawing jig is provided in the middle of each inner wire 24a to draw the inner wire 24a portion on the first connecting member 21 side and the inner wire 24a portion on the second connecting member 22 side, A tension is generated in the inner wire 24a, and the tension generated in the inner wire 24a is maintained as it is by a mechanical reverse movement preventing function. As this inward drawing jig, for example, a lever block (registered trademark), a chain block, a hand-wound winch (hand winch), a manual chill hole, a turn buckle, or the like can be used.

  The outer pulling jig is provided in the middle of each outer wire 24b to draw the outer wire 24b portion on the bridging material 25 side and the outer wire 24b portion on the first connecting member 21 side, thereby pulling the outer drawing jig out. The tension is generated in the outer wire 24b, and the tension generated in the outer wire 24b is continuously maintained by the mechanical reverse movement preventing function. For example, a lever block (registered trademark), a chain block, a hand-wound winch (hand winch), a manual chill hole, or a turnbuckle can be used as the outward pulling jig.

  On the other hand, as shown in FIG. 1, the wire 4 is fixed by winding each end thereof around one and the other main column members P so as to extend along the first diagonal material S <b> 1. It has become. In this embodiment, the second diagonal material S2 installed so as to intersect the first diagonal material S1 to be replaced is also set as the replacement target, and along the second diagonal material S2. A wire 41 is provided. Even when an unexpected tensile load is generated in a portion corresponding to the second diagonal material S2 during the replacement operation of the second diagonal material S2, the wire 41 is replaced with the second diagonal material S2. It takes charge of the tensile load and makes it possible to prevent the steel tower T1 from becoming unstable.

  The mechanical pulling jig is provided in the middle of the wire 4 to pull the wire 4 part on the side of the one main pillar material P and the wire 4 part on the side of the other main pillar material P to the wire 4. In addition to generating tension, the tension generated in the wire 4 is maintained as it is by a mechanical reverse movement preventing function. As this drawing jig, for example, any of a lever block (registered trademark), a chain block, a manually wound winch (hand winch), a manual chill hole, a turn buckle, and the like can be used.

  The other wire 41 is also provided with a mechanical drawing jig so that the tension of the wire 41 can be adjusted.

  In the steel tower abdominal material exchanging apparatus 1 configured as described above, the adjacent main pillar material P is placed on the lower horizontal side at a portion corresponding to the lower end side of the first diagonal material S1 to be exchanged on which a tensile load acts. In addition to being connected by the reinforcing jig 2, the adjacent main pillar material P is connected by the upper horizontal reinforcing jig 3 at a portion corresponding to the upper end side of the first diagonal material S1, and the first diagonal material S1 is connected. The wire 4 is extended along and the ends of the wire 4 are connected to the adjacent main pillar materials P. Further, the wire 41 is extended along the second diagonal member S2, and each end portion of the wire 41 is connected to each main pillar material P. Further, a mechanical drawing jig is interposed in the middle of the wires 4 and 41.

  Then, by applying a tension to the wire 4 with a mechanical drawing jig provided in the middle of the wire 4, the tension is transmitted as a compressive force to the first diagonal member S1 through at least the main pillar materials P. Then, after releasing the tensile load acting on the first diagonal material S1, the first diagonal material S1 is replaced with a new first diagonal material S1.

  Further, utilizing the fact that the tension acting on the wire 4 is transmitted as a tensile force to the second diagonal member S2 via each main pillar material P, the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3, After the compression load acting on the second diagonal material S2 is released, the second diagonal material S2 is replaced with a new second diagonal material S2. When replacing the second diagonal member S2, the wire 41 is tensioned to such an extent that the replacement of the second diagonal member S2 will not be hindered by operating a drawing jig provided on the wire 41. It is preferable to ensure the safety when the second diagonal member S2 is replaced by acting.

  On the other hand, the first diagonal member S1 and the first diagonal member S1 can also be adjusted by adjusting the interval between the adjacent main column members P using the interval correcting jig 24 provided in the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3. The load acting on the second diagonal material S2 can be delicately released. Here, when the interval between the adjacent main pillar materials P is narrowed, the inner wire 24a is drawn by the inner drawing jig while releasing the drawing of the outer wire 24b by the outer drawing jig. Further, in order to widen the interval between the adjacent main pillar materials P, the outer wire 24b is drawn by the outer drawing jig while releasing the drawing of the inner wire 24a by the inner drawing jig.

  As for the horizontal member H, at least one of the wires 4 and 41 and the drawing jig provided on the inner wire 24a and the outer wire 24b of the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3 is used. Thus, after the load acting on the horizontal member H is released, the horizontal member H is replaced.

  As described above, the tension applied to the wires 4, 41, 24a, and 24b is not obtained by hydraulic pressure but obtained by a mechanical drawing jig. The tensile load does not act again on S1, and the compressive load does not act again on the second diagonal material S2. That is, after the load applied to the first diagonal member S1, the second diagonal member S2, the horizontal member H, etc. as the abdomen is replaced by the wires 4, 41, 24a, 24b, any operation is performed on the state. Therefore, the abdomen such as the first diagonal material S1 can be easily replaced with a new one.

  Further, the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3 are connected to the first connecting member 21 and the second connecting member 22 connected to the main pillar members P, and to the connecting members 21 and 22. Since each of the connecting members 21 and 22 includes a liner plate 21c and 22c that stably supports the connecting bar 23 in the horizontal direction, the main pillar member P is erected at a predetermined inclination angle. Even in the case of attachment, by using the liner plates 21c and 22c having an inclination angle corresponding to the inclination angle of the main pillar material P, it is possible to stably support each connecting bar 23 in a horizontal state.

  Moreover, with respect to the horizontal component load W described above, tension is applied in the diagonal direction of the rectangular frame structure formed by the one and the other main pillar members P, the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3. When the wire 4 is in charge, a so-called platform structure composed of two triangles is formed, and the steel tower T1 can be strongly reinforced. For this reason, the replacement | exchange work of abdominal material can be performed very safely. Also, even if a load in the direction opposite to the horizontal component load W is applied, a platform structure in which the wire 41 is responsible for the tension is formed. Can be carried out extremely safely.

  Next, a second embodiment of the present invention will be described with reference to FIGS. The steel tower abdomen exchange device 11 shown in Example 2 is different from the steel tower abdomen exchange device 1 shown in Example 1 in that the lower horizontal reinforcing jig 6 and the upper horizontal reinforcing jig 7 are made of angle steel. It is the point comprised for the purpose of attaching to the main pillar material L. Note that description of components common to the first embodiment is omitted as much as possible.

  The lower horizontal reinforcing jig 6 and the upper horizontal reinforcing jig 7 have the same structure except that the length of the first connecting bar 61 described later is different. Therefore, only the lower horizontal reinforcing jig 6 will be described.

  That is, as shown in FIGS. 4 and 5, the lower horizontal reinforcing jig 6 includes a first connection bar (connection bar) 61, a second connection bar (connection bar) 62, and the first connection bars 61. A first coupling member 63, a second coupling member 64 and a spacer 65 for coupling the second coupling bar 62 to the second coupling bar 62; a coupling member 66 for fixing the second coupling bar 62 to the other main pillar material L; An interval correction jig 67 is provided.

  As shown in FIG. 5, the first connecting bar 61 is formed of angle steel, and one end portion is formed by a plurality of bolts and nuts (only the bolt B is shown in the figure) on one main pillar material L. It is designed to be connected. In this case, one end portion of the first connecting bar 61 is directed so that one outer surface 61a bent in an L-shape is directed downward with respect to the other outer surface 61b, and the one outer surface 61a is directed to one main column member. In a state of being in contact with one inner surface of L, the main pillar material L is fixed with bolts and nuts. In addition, the 1st connection bar 61 is the state which the other outer surface 61b faced upwards in the state fixed to one main pillar material L. As shown in FIG.

  The second connecting bar 62 is formed of angle steel having the same cross-sectional shape and cross-sectional dimensions as the first connecting bar 61, and each of the three connecting holes 62 is formed through three elongated holes 62c formed in the middle portion in the longitudinal direction. Thus, the connecting member 66 is connected by a bolt B and a nut N. In this case, the second connecting bar 62 has one outer surface 62a directed upward with respect to the other outer surface 62b, and the one outer surface 62a is in contact with one outer surface of the other main pillar material L. Thus, it is fixed to the other main pillar material L via a connecting member 66.

  The second connecting bar 62 is fixed to the other main pillar member L via the connecting member 66, and the other outer surface 62b faces downward, and the one main pillar member The first connecting bar 61 fixed to L has the same level in the height direction as the other outer surface 61b facing upward. Moreover, the other end part of the 1st connection bar 61 and the one end part of the 2nd connection bar 62 are the states which overlapped in the state shifted | deviated in parallel.

  And about the overlapped part, as shown in FIG.5 (c), one outer surface 61a of the 1st connection bar 61 and one outer surface 62a of the 2nd connection bar 62 are the flat plates of the main pillar material L. Since there is an interval corresponding to the thickness of the portion, the spacer 65 is inserted into the interval portion, and then the first connecting bar 61 and the second connecting portion 61 are used by using the first joint member 63 and the second joint portion 64. The connecting bar 62 is connected with a plurality of bolts and nuts (only the bolt B is shown in the figure). Thereby, the 1st connection bar 61 and the 2nd connection bar 62 will be in the state of one connection bar.

  The first joint member 63 and the second joint portion 64 are formed of angle steel having the same cross-sectional shape and cross-sectional dimensions as the first connecting bar 61. The spacer 65 is formed of a steel plate having the same thickness as the flat plate portion of the main pillar material L.

  As shown in FIGS. 5D and 5E, the connecting member 66 is formed of angle steel having the same cross-sectional shape and cross-sectional dimensions as the second connecting bar 62, and the longitudinal center portion thereof is formed. The other main pillar material L is connected with a plurality of bolts and nuts (only the bolt B is shown in the figure). In this case, the connecting member 66 is directed in a state in which one outer surface 66a is directed downward with respect to the other outer surface 66b, and the one outer surface 66a is in contact with one outer surface of the other main pillar material L. The other main pillar material L is fixed with bolts and nuts. Then, the connecting member 66 is placed in the long holes 62c and the connecting member 66 formed in the second connecting bar 62 in a state where the other outer surface 62b of the second connecting bar 62 is placed on the other outer surface 66b. The second connecting bar 62 is fixedly supported by a bolt B inserted into each formed through hole 66c and a nut N screwed into the bolt.

  Further, as shown in FIGS. 5A and 5F, a bracket 68 formed of angle steel having the same cross-sectional shape and cross-sectional dimensions as the second connecting bar 62 is provided at the other end of the second connecting bar 62. Is provided. The bracket 68 has a bolt B and a nut in a state where one outer surface 68a is directed downward with respect to the other outer surface 68b and the other outer surface 68b is in contact with the other outer surface 62b of the second connecting bar 62. N is fixed to the second connecting bar 62. The bracket 68 is fixed to the second connecting bar 62 so that one outer surface 68 a thereof is flush with the one outer surface 62 a of the second connecting bar 62.

  As shown in FIG. 5A, the first connecting bar 61 has a through hole 61h at the other end, and the connecting member 66 has through holes 66h and 66i at one end and the other end thereof. The bracket 68 is formed with a through hole 68h at one end thereof. The through holes 61h, 66h, 66i, and 68h are provided in flat plate portions that are indicated by reference numerals as one outer surfaces 61a, 66a, and 68a of the first connecting bar 61, the connecting member 66, and the bracket 68, respectively.

  The interval correction jig 67 has one inner wire 67a that connects the first connecting bar 61 and the connecting member 66 using the through holes 61h and 66h, and the connecting member 66 and the bracket 68 are connected to each other. A mechanical inner pulling jig (not shown) having one outer wire 67b connected by using the through hole 66i and the through hole 68h, and provided in the middle of each inner wire 67a; It has a mechanical outward drawing jig (not shown) provided in the middle of each outer wire 67b.

  The inner pulling jig is provided in the middle of each inner wire 67a to pull the inner wire 67a portion on the first connecting bar 61 side and the inner wire 67a portion on the connecting member 66 side, thereby A tension is generated in the inner wire 67a and the tension generated in the inner wire 67a is continuously maintained by a mechanical reverse movement preventing function. As this inward drawing jig, a lever block (registered trademark) or the like can be used similarly to the above-mentioned drawing jig.

  The outward pulling jig is provided in the middle of each outer wire 67b to pull the outer wire 67b portion on the connecting member 66 side and the outer wire 67b portion on the bracket 68 side, thereby pulling the outer wire 67b. The tension generated in the outer wire 67b is maintained as it is by the mechanical reverse movement preventing function. As this outward pulling jig, a lever block (registered trademark) or the like can be used similarly to the pulling jig described above.

  Moreover, as shown in FIG. 4, the steel tower T2 provided with the main columnar material L made of angle steel is also formed of angle steel for the abdominal materials such as the first diagonal material S1 and the second diagonal material S2. . Each abdominal material is connected to each main pillar material L by bolts and nuts without using a gusset plate.

  In the tower abdominal material exchanging device 11 configured as described above, when the interval between the adjacent main pillar materials L is narrowed, the connection state between the second connecting bar 62 and the connecting member 66 is first connected. Loosen with bolts B and nuts N. Thereby, the 2nd connection bar 62 becomes movable on the connection member 66 in the longitudinal direction of each long hole 62c. Then, the inner wire 67a is pulled by the inner pulling jig while releasing the pulling of the outer wire 67b by the outer pulling jig. Further, in order to widen the interval between the adjacent main pillar materials P, the outer wire 67b is pulled by the outer pulling jig while releasing the pulling of the inner wire 67a by the inner pulling jig.

  Further, after the load applied to the first diagonal member S1, the second diagonal member S2, and the horizontal member H is released by adjusting the pulling of the wire 4, the inner wire 67a, and the outer wire 67b, the second After the connecting bar 62 and the connecting member 66 are securely connected by the bolt B and the nut N, the first diagonal member S1 and the like are replaced.

  Further, the steel tower T2 shown in FIG. 4 is configured to include a plurality of abdominal materials in addition to the first diagonal material S1, the second diagonal material S2, and the horizontal material H, but the first diagonal material S1. When the second diagonal member S2 and the horizontal member H are replaced, the other abdominal members can also be replaced.

  Further, as shown in FIG. 4, the steel tower T2 is composed of a mountain-shaped steel tower. Therefore, the steel tower T2 is an abdominal material that rises to the right from one main pillar material L that is the left main pillar material L. The lower end portion of the second diagonal member S2 is fixed to the outer surface of one main pillar material L. In addition, the lower end portion of the first diagonal material S1 as the abdominal material rising toward the left from the other main pillar material L on the right side is fixed to the inner surface of the other main pillar material L. On the other hand, in the lower horizontal reinforcing jig 6 and the upper horizontal reinforcing jig 7, one end of the first connecting bar 61 is fixed to the inner surface of one main pillar material L, and the second connecting bar 62 is interposed via the connecting member 66. It is fixed to the outer surface of the other main pillar material L. Accordingly, the lower horizontal reinforcing jig 2 and the upper horizontal reinforcing jig 3 are provided slightly above the lower end portions of the first diagonal material S1 and the second diagonal material S2, so that the first diagonal material S1 is provided. In addition, the main pillar material L can be securely fixed while avoiding buffering with the second diagonal material S2.

  And since the 1st connection bar 61 and the 2nd connection bar 62 are formed with the angle steel extended along the inner surface and outer surface of the main pillar material L, the protrusion amount from the steel tower T2 can be suppressed as much as possible. . Therefore, as the horizontal reinforcing jigs 6 and 7, a compact and lightweight one can be obtained. And since the 1st connection bar 61, the 2nd connection bar 62, etc. are comprised using the angle steel similar to the structural member of the steel tower T2, the firm horizontal reinforcement jigs 6 and 7 can be obtained.

  In addition, the same effects as those of the first embodiment are obtained.

  In each of the above-described embodiments, the case where the horizontal component load W acts as an external force has been described. Even if the external force is in the other direction, the abdomen can be exchanged while effectively reinforcing the steel tower.

DESCRIPTION OF SYMBOLS 1,11 Abdominal material exchange apparatus of a steel tower 2,6 Lower horizontal reinforcement jig 3,7 Upper horizontal reinforcement jig 4 Wire 21 1st connection member (connection member)
21c, 22c Liner plate 22 Second connecting member (connecting member)
23 connecting bar 61 first connecting bar (connecting bar)
62 Second connecting member (connecting bar)
66 Connecting member A Steel tower structure L, P Main pillar material S1 First diagonal material S2 Second diagonal material T1, T2 Steel tower W Horizontal component load (external force)

Claims (4)

It has at least a first diagonal member and a second diagonal member having different inclination directions as a bellows connecting adjacent main pillar members with an interval, and the first diagonal member is subjected to a tensile load by the action of an external force. In the method of exchanging the abdominal material of the steel tower, at least the exchange of the first oblique material and the second oblique material on the steel tower construction surface where the compressive load acts on the second oblique material is possible. There,
The adjacent main pillar member is connected by a lower horizontal reinforcing jig at a portion corresponding to the lower end side of the first diagonal member, and the adjacent main column member is connected at a portion corresponding to the upper end side of the first diagonal member. After connecting the column material by the upper horizontal reinforcing jig and connecting the adjacent main column material by the wire extending along the first diagonal material,
Fixing the interval between the adjacent main column members by a mechanical interval correction jig provided in each of the lower horizontal reinforcement jig and the upper horizontal reinforcement jig,
By applying tension to the wire with a mechanical pulling jig provided in the middle of the wire, the tension is transmitted as a compressive force to the first diagonal member through at least the main pillar members . after releasing the tensile load acting on the first diagonal materials utilizing Rukoto move toward the first diagonal member to a position before the external force acts, the first new said first diagonal materials Replace the diagonal material
The tension acting on the wire is transmitted as a tensile force to the second diagonal member via the main pillar members, the lower horizontal reinforcing jig and the upper horizontal reinforcing jig, and the second diagonal member after releasing the compressive load acting on the second diagonal materials utilizing Rukoto move toward the external force previous position, replace the second diagonal materials to the new second diagonal materials A method for exchanging abdominal material of a steel tower. The first diagonal member and the first diagonal member can also be adjusted by adjusting the interval between the adjacent main column members by a mechanical interval correcting jig provided in each of the lower horizontal reinforcing jig and the upper horizontal reinforcing jig. The method for exchanging an abdominal material of a steel tower according to claim 1, wherein the tensile load and the compressive load acting on each of the second diagonal members are released. It has at least a first diagonal member and a second diagonal member having different inclination directions as a bellows connecting adjacent main pillar members with an interval, and the first diagonal member is subjected to a tensile load by the action of an external force. A tower abdominal material exchanging device for enabling at least the exchange of the first diagonal material and the second diagonal material on the steel tower construction surface in which a compressive load acts on the second diagonal material. There,
A lower horizontal reinforcing jig for connecting the adjacent main pillar members at a portion corresponding to the lower end side of the first diagonal member;
An upper horizontal reinforcing jig for connecting the adjacent main pillar members at a portion corresponding to the upper end side of the first diagonal member;
A wire extending along the first diagonal and connecting the adjacent main pillars;
A mechanical drawing jig that is provided in the middle of the wire and generates tension on the wire ;
The lower horizontal reinforcing jig and the upper horizontal reinforcing jig include a connecting member that is connected to each main pillar member, and a connecting bar that spans each connecting member,
The steel tower abdomen exchange apparatus , wherein the connecting member includes a liner plate that stably supports the connecting bar in a horizontal direction . 4. A mechanical interval correction jig for adjusting an interval between the adjacent main column members is provided in each of the lower horizontal reinforcement jig and the upper horizontal reinforcement jig. An abdominal material changing device for a steel tower as described in 1.

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