JP5448523B2 - Reinforcement method for beam and gantry used for this method - Google Patents

Description

  The present invention relates to a construction method and a frame for performing beam bar arrangement using a frame that is to be embedded in a cocleet to be placed.

  Conventionally, there is a method described in Japanese Patent Application Laid-Open No. 2004-151620 and a method for performing beam bar arrangement using a frame that is to be embedded in a cochlet to be placed. As shown in FIG. 13A, the gantry 2 has a substantially portal shape made of an angle material or the like, and an upper main bar support portion 2d and a width stop angle 2b are installed between upper and lower end portions of both leg portions 2a. In addition, upper main bar drop prevention protrusions 2c are provided at both ends of the upper main bar support portion 2d. In the beam reinforcement method, pedestals 2 are erected at predetermined intervals on discarded concrete 1, and the upper main bars 3a are placed on the pedestal 2 as shown in FIG. Wrap several stirrups 4 around 3a. Since this stirrup 4 is for preventing unintentional falling of the lower main muscle 3b placed in the Kanzashi 6 in a later step and movement beyond a certain level, the lower main bar 3b is arranged in the longitudinal direction or in the longitudinal direction of the beam. The main bars are arranged with a gap as large as possible so that there is no hindrance to the pressing work of the main muscles.

  Next, as shown in FIG. 4C, the lower main muscle 3b is placed on the Kanzashi 6 which is arranged in a state of crossing the foundation beam and supported at the raised position by a pair of jacks 5 and 5, In this state, the upper main bars 3a and the lower main bars 3b adjacent to each other in the longitudinal direction of the beam are connected to each other by gas pressure welding or the like so as to have a single length, and then the upper main bars 3a and the lower main bars 3b are stretched over. The remaining number of star wraps 4 are wound to obtain the required number of star wraps 4. The star wrap 4 is divided into a first member 4a having a U-shape with an upward opening with hooks formed at both ends, and a horizontal linear second member 4b having both ends bent downward.

  Subsequently, two workers simultaneously reduce the jacks 5 and 5, and the lower main muscle 3 b is gradually lowered by lowering the Kanzashi 6 with the jacks 5 and 5. 4a is supported. Finally, as shown in FIG. 4D, after removing the Kanzashi 6 and the jacks 5 and 5, the base beam 7 is constructed by assembling the formwork (not shown) and placing concrete. Become. The gantry 2 is embedded in the concrete of the foundation beam 7.

JP-A-6-146487

By the way, the conventional beam reinforcement method has the following problems.
(1) In order to place the lower main muscle 3b on the portion of the Kanzashi 6 located inside the stirrup 4 after the stirrup 4 is wound around the upper main muscle 3a placed on the gantry 2, It is necessary to insert it inside the star wrap 4 while moving in the beam longitudinal direction between the adjacent star wraps 4, 4. However, it is necessary to make the lower main bar 3b short so that the lower main bar 3b can be inserted while moving in the beam longitudinal direction, and the number of lower main bars 3b to be inserted increases and the lower main bars 3b adjacent to each other in the beam longitudinal direction are also connected. As a result, the number of joints increases and the number of work steps increases.

(2) Prepare the Kanzashi 6 and the jacks 5, 5, and two workers simultaneously reduce the jacks 5, 5 to gradually lower the lower main muscle 3 b together with the Kanzashi 6. Since the kanzashi 6 and the jacks 5 and 5 are removed after the lap 4 is mounted on the first member 4a, the number of work steps is increased.

(3) When the remaining number of stirrups 4 are wound over the upper main bar 3a and the lower main bar 3b, the upper main bar 3a and the lower main bar 3b are obstructive and require a lot of labor to wind the star wrap 4. Will increase.

  An object of the present invention is to provide a beam bar arrangement method capable of preventing an increase in work man-hours in order to solve the above-described problems, and a mount used in this method.

  In order to prevent an increase in the work man-hours, the means adopted by the present invention according to claim 1 is a method in which a main bar and stirrup are used to arrange beams for a beam, on the lower frame plate, closer to the lower end. The upper end of the left and right struts that are connected to each other by a connecting member, comprising a width-retaining hook, a hairpin hook, and an upper main bar hook in order from below to above the connecting member. The base placement process for placing the bases in a standing position at an interval in the front-and-rear direction, and the left and right upper main bars thrown in from the top via the upper end opening of each base, The upper left and right upper main bar arrangement process that hangs the upper main bar hooks and binds each base to each upper main bar, and the left and right upper main bars are suspended from multiple top-sided three-sided stirrups Use a star rack Arrangement process and on the stirrup, multiple lower main bars thrown from above via each base and the upper end open position of each stirrup are arranged with a left and right spacing, and the stirrup and lower main bars are bound Lower main bar arrangement process, width stop reinforcement arrangement process that spans the width stop bars on the left and right width stop hooks of each base, and each base and each star wrap on multiple width stop bars The abdominal muscle placement process for placing the left and right abdominal muscles inserted from above through the upper end opening of the upper and lower sides of each gantry and the chin rests on the left and right chin rests, An intermediate upper main bar arrangement process in which a plurality of intermediate upper main bars inserted from above through the upper end opening of each star wrap are arranged with a left-right interval, and each star wrap on the left and right and intermediate upper main bars If you place the covering muscle close to To a reinforcement method for beam which is characterized in that the covering muscle reinforcement step of binding the main reinforcement the corresponding upper and the covering muscle in this order.

  In the beam reinforcement method according to the first aspect of the present invention, in the left and right upper main bar arrangement process, the long left and right upper main bars that are input from above through the upper end open portion of the gantry, It can be hung on the corresponding upper main bar hooks on the left and right columns of the gantry, and in the lower main bar barbing process, it is a long length inserted from above through the upper end opening of each gantry and each star wrap. The lower main bars can be placed directly on the stirrup, and in the middle upper main bar arrangement process, the long middle upper main bars that are thrown in from the top through each base and the upper end opening of each star wrap Can be placed directly on the kinkweed muscle. Further, the beam bar arrangement method according to the present invention can arrange a necessary number of open-side three-sided stirrups at a time in the stirrup arrangement step.

  The means adopted by the present invention according to claim 2 in order to make it possible to easily arrange the additional struts is provided on the left and right struts of the gantry after the covering reinforcement arrangement step, and above the covering reinforcement. A striking support placement process for placing a striking support tool, a striking bar arrangement process for placing a plurality of striking reinforcements on the striking support tool at left and right intervals, and a striking reinforcement The beam bar arrangement method according to claim 1, wherein a second covering bar is disposed on the second covering bar and a second covering bar arranging step for binding the second covering bar and each additional reinforcing bar is performed in this order. . In the present invention, in order to distinguish the “covering bar arrangement process” according to claim 1 from the “second covering bar arrangement process”, it is referred to as “first covering muscle arrangement process”. Become.

  In the beam reinforcing method according to the second aspect of the present invention, a plurality of long reinforcing bars are arranged on the supporting tool for additional hits arranged on the left and right columns of the gantry. be able to.

  In order to prevent an increase in work man-hours when arranging the upper main bars of the second stage, the means adopted by the present invention according to claim 3 is characterized in that each of the plurality of mounts is arranged in the mount arranging step. Therefore, using left and right struts equipped with upper and lower two-stage hook-and-loop hooks, between the abdominal muscle placement process and the middle upper principal muscle placement process, the left and right lower-stage pigtails At the same time, lay the lower knurled bars on the hooks, and on the lower knurled lines, open the upper main bars of the lower tiers inserted from the top via the top and the open top of each stirrup. The upper upper bar reinforcement step is arranged, and in the intermediate upper main bar arrangement step, the upper upper bar muscle is placed on the upper upper bar using the upper hook hook device as the hook rod hook device. The claim 1 or 2 as an upper principal muscle It is a reinforcement method for the beam. In the present invention, the “upper left and right upper bar arrangement process” and the “middle upper main bar arrangement process” according to claim 1 are distinguished from the “lower upper main bar arrangement process” in order to distinguish the “upper upper bar arrangement process”. It will be referred to as “upper left and right upper bar arrangement process” and “upper middle bar arrangement process in the middle of the upper stage”.

  In the beam bar arrangement method according to the present invention described in claim 3, in the upper main bar arrangement process of the lower stage, the long lower stage fed from above through the upper end opening locations of each mount and each stirrup The upper main muscle can be placed directly on the lower knaps.

  In order to prevent an increase in the number of work man-hours, the means adopted by the present invention according to claim 4 is that in the frame used for the beam reinforcement method, the right and left columns in which the lower ends are connected by connecting members; It was equipped with a hooking device for width stop muscles, a hooking device for hairpins, and a hooking device for upper main muscles, which were provided in order from the bottom to the top at the upper part of the connecting member of each column, and the upper end was opened. It is a pedestal used for the beam reinforcement method characterized by the above.

  The gantry used in the beam bar arrangement method according to the present invention according to claim 4 corresponds to the left and right upper principal bar hooks which are long left and right which are input from above through the upper end open portions of the left and right columns. The upper main muscle can be stretched over, and the lower lower main muscle thrown from above through the upper end opening portion can be arranged on the upper open three-sided stirrup suspended from the upper and lower upper main muscles. Furthermore, the long upper principal muscle thrown in from the upper direction through the upper end open part of the right and left support | pillars can be arrange | positioned to the hairpin hung on the hook for right and left hairpins.

In order to make it easy to adjust the height of each hook, the means adopted by the present invention according to claim 5 is that the left and right support columns are formed of reinforcing bars whose surfaces are male screws, and the width stoppers Each of the muscle hook, the hook muscle hook, and the upper main hook hook is provided with a cylindrical portion through which the column is inserted, and the cylindrical portion is formed by a female screw threadedly engaged with the male screw of the column. It is a mount used for the bar reinforcement method of Claim 4 which supports.

The frame used in the beam bar arrangement method according to the present invention described in claim 5 is a width-retaining bar pull supported by the female screw by changing the height position of the female screw that is screwed into the male screw of the column. It is possible to change the height position of the hook, the hook for the kneading muscle, and the hook for the upper main muscle.

  The beam bar arrangement method according to the present invention as set forth in claim 1 is capable of inserting the long left and right upper main bars from above through the upper end opening portion of each gantry, and the upper ends of each gantry and each stirrup. Since the long lower main bar and the upper middle main bar can be inserted through the open part, the joints between the upper main bar and the lower main bar that are adjacent to each other in the longitudinal direction of the main bar are reduced compared to the conventional case. Thus, it is possible to prevent an increase in work man-hours. In addition, since the long lower main muscle can be directly arranged on the stirrup, it is not necessary to use a conventional Kanzashi and jack, and it is possible to prevent an increase in work man-hours. In addition, the necessary number of open-end three-sided stirrups can be placed at one time before placing the lower main bars, which means more labor is required to place the stirrups than in the conventional case where the remaining number of stirrups are wrapped. Therefore, it is possible to prevent an increase in work man-hours.

  According to the bar arrangement method for a beam according to the second aspect of the present invention, since a plurality of elongated additional reinforcing bars can be arranged on the support member for additional hitting, the additional reinforcing bars can be easily arranged.

  The beam bar arrangement method according to the third aspect of the present invention is such that the upper main bar of the long lower stage is directly arranged on the lower barbing bar of the lower stage by using the upper end open position of each gantry and each stirrup. Therefore, it is possible to reduce the number of joints between the upper main bars adjacent to each other in the longitudinal direction of the main bars, thereby preventing an increase in work man-hours.

  Since the gantry used in the beam bar arrangement method according to the present invention according to claim 4 can be placed by placing a long upper main bar and a lower main bar from above through the upper end open portions of the left and right columns, It is no longer necessary to use a conventional Kanzashi and jack to be removed, and it is possible to prevent an increase in work man-hours.

Frame for use in the beam for reinforcement construction method according to the present invention of claim 5, wherein, by adjusting the height position of the female screw screwed to the male thread of the strut, the width stop muscle for hooking tool, for hairpin muscle The height positions of the hook and the upper main bar hook can be easily adjusted.

1 shows a gantry according to a first embodiment of the present invention, in which FIG. (A) is a front view of the gantry 10, FIG. (B) is a left side view of a longitudinal section, and FIG. FIG. 4D is a plan view of the lower chin-knot hook 15, and FIG. E is a lower knurl hook 16 and the upper main hook 17. FIG. In the beam bar arrangement method according to the first embodiment of the present invention, the upper left and right upper main bars 25a, 25a on the upper main bar hooks 17, 17 of each gantry 10 arranged on the lower frame plate 22, respectively. , A plurality of stirrups 26 are hung on the left and right upper main bars 25a, 25a, and a plurality of lower main bars 27 are arranged on the lower side portion 26a of the plurality of stirrups 26, Fig. (A) is a front view, Fig. (B) is omitted in the middle, a vertical side view is shown on the right side, and a left side view is shown on the left side. In the beam bar arrangement method according to the first embodiment, from the state shown in FIG. 2, the width stop bars 28 are further extended to the left and right width stop hooks 14, 14 of each gantry 10, The left and right abdominal muscles 29 and 29 are arranged on the muscle 28. FIG. (A) is a front view, FIG. (B) is omitted in the middle, a vertical side view is shown on the right side, and a left side view is shown on the left side. Show. In the beam bar arrangement method according to the first embodiment, from the state shown in FIG. 3, the lower barb bars 30 are extended to the lower barb hooks 15, 15 on the left and right sides of each base 10. FIG. 2A shows a state in which a plurality of lower upper principal bars 31 are arranged on a lower knurled line 30. FIG. 1A is a front view, FIG. Shows a left side view. In the beam bar arrangement method according to the first embodiment, from the state shown in FIG. 4, the upper barb bars 32 are bridged to the upper barb hooks 16, 16 on the left and right of each gantry 10, A plurality of upper middle upper main bars 25b, 25b,... Are arranged on the upper knurled bar 32, and a first covering bar 34 is arranged on the upper upper main bars 25a, 25b,. (A) is a front view, (B) is a left side view on the left side and a vertical side view on the right side with the middle omitted. In the beam bar arrangement method according to the first embodiment, a state before the additional striking support 35 is passed over the left and right support columns 11 of the gantry 10 from the state shown in FIG. 5 is shown. FIG. 4A is a front view, and FIG. 4B is a plan view of the support tool 35 for additional hitting. In the beam bar arrangement method according to the first embodiment, from the state shown in FIG. 6, a plurality of additional reinforcing bars 36 are further arranged on the additional hitting support tool 35, and the second additional reinforcing bar 36 is provided with the second reinforcing bar 36. FIG. 2A shows a front view, FIG. 2B omits the middle, and shows a vertical side view on the right side and a left side view on the left side. It is a perspective view which shows a part of bar arrangement structure arranged by the bar arrangement method for beams which concerns on 1st Embodiment. The other aspect of the stand of the another aspect in 1st Embodiment is shown, Comprising: FIG. (A) is a front view of the stand 40 and the support tool 55 for additional hits, and FIG. The left side view of the support tool 55, FIG. (C) is a plan view of the hooking tool 44 for the width stop bar, FIG. (D) is a plan view of the lower hooking tool hook 45, and FIG. It is a top view of the state which integrated the hooking tool 46 and the upper main muscle hooking tool 47. The beam reinforcement structure obtained by the beam reinforcement construction method concerning the 2nd Embodiment of this invention is shown, Comprising: FIG. (A) is a front view, FIG. The left side view is shown on the left side of the side view. The beam bar arrangement structure obtained by the beam bar arrangement method concerning the 3rd Embodiment of this invention is shown, Comprising: FIG. (A) is a front view, FIG. The left side view is shown on the left side of the side view. The beam reinforcement structure obtained by the beam reinforcement construction method concerning the 4th Embodiment of this invention is shown, Comprising: FIG. (A) is a front view, FIG. The left side view is shown on the left side of the side view. Drawing (A) thru / or (D) is a front view showing the procedure of the conventional beam reinforcement method in order.

  The beam bar arrangement method (hereinafter referred to as “the present invention method”) and the frame used in the beam arrangement method (hereinafter referred to as “the present invention frame”) according to the present invention are based on the embodiments shown in the drawings. I will explain.

[First Embodiment]
1 to 9 show a first embodiment of the present invention. As shown in FIG. 1, the gantry 10 of the present invention includes left and right columns 11, 11, a connecting member 12 made of an angle material or the like that connects the lower ends of the left and right columns 11, 11 by welding, and the like. Width stop bar hooks 14, lower barb hooks 15, upper bar bar hooks 16 and upper main bar bars, which are provided in order from the lower side to the upper side in the upper part of the connecting member 12. A hanging tool 17 and a leg portion 19 provided at the lower end of each column 11 are provided, and the upper end is opened 10a. The gantry 10 of the present invention is configured to be able to stand on its own by forming the left and right leg portions 19, 19 long in the front-rear direction.

  The width stop bar hook 14 is formed of an iron material and has a column insertion cylinder 14a for inserting the column 11, and a cylindrical hook 14b joined to the column insertion cylinder 14a by welding or the like. Consists of. The lower-stage hairpin hook 15 is formed of an iron material, and supports a column insertion tube portion 15a through which the column 11 is inserted, and a column insertion tube portion 15a that is joined by welding or the like and protrudes in the front-rear direction. And a hook portion 15b such as a bar-like member.

  The upper hook hook 16 is formed of an iron material, and supports a column insertion tube portion 16a through which the column 11 is inserted, and is joined to the column insertion tube portion 16a by welding or the like and protrudes in the front-rear direction. And a hook-like hooking portion 16b. The upper main bar hook 17 is formed of an iron material, and is connected to the column insertion cylinder 17a through which the column 11 is inserted and the column insertion cylinder 17a by welding or the like, and protrudes to the inside of the gantry 10. It consists of a hook-like hook portion 17b. In the present example, the upper-stage hooking hook 16 and the upper main hook 17 are formed by forming the column insertion cylinder 16a and the column insertion cylinder 17a with a single cylindrical member and integrating them. Although it is easy, it may be a separate body. Although not shown in the drawing, the upper hook hook 16 is provided on both the left and right sides by protruding front and rear hooks 16b and 16b from the front and rear of the column insertion cylinder 16a. It may be a left-right shared type as possible.

The gantry 10 of the present invention uses a reinforcing bar having a male screw formed on the surface thereof as a support column 11 and a female screw 18 screwed to the male screw of the support column 11, the cylindrical portion 14 a of the hooking tool 14 for the width stop bar, and a lower handle. The cylindrical portion 15a of the muscle hook 15, the upper rod hook 16, and the upper main rod hook 17 are integrally supported by the female portions 16 a and 17 a. By rotating 18, the height position is changed, so that the hooking tool 14 for the width-retaining bar, the hooking tool 15 for the lower knurls, the hooking tool 16 for the upper knurls, and the hooking tool 17 for the upper main muscles. The height position can be changed individually. In this example, the female screw 18 and the cylindrical portion 14a (15a, 16a.17a) of each hook 14 (15, 16.17) are separated, but the female screw 18 and each cylindrical portion 14a (15a). 16a and 17a) can be joined together by welding or the like (not shown). It should be noted that the rack 10 of the present invention may be configured so that only the upper main bar hook 17 is provided without the lower bar hook 15 and corresponding to the arrangement of the upper main bar.

The platform 10 of the present invention includes a height adjuster 20 via a leg portion 19 extending in the front-rear direction joined to the lower end of each column 11 by welding or the like. The height adjuster 20 includes a set of two nuts 20c, 20c attached to the front and rear of the leg portion 19, height adjusting bolts 20a, 20a that are screwed into the nuts 20c and can be moved up and down, It becomes the leading end of the bolt 20a and a rotatably connected flat or whether we made a ground portion 20b was, height adjustment bolt 20a, by rotating the 20a, the height position of the stand 10, when allowed to free-standing The vertical degree of the gantry 10 can be adjusted. In the case of the construction site where the height position and the vertical degree do not need to be adjusted, the height adjustment tool 20 can be omitted.

  As shown in FIG. 6, the platform 10 of the present invention is configured to be able to hang a support tool 35 for extra hitting near the upper ends of the left and right columns 11, 11. The striking support tool 35 is made of an iron material, and is formed by joining both ends of a connecting portion 35b made of a flat plate or the like to the left and right column insertion cylindrical portions 35a, 35a through which the column 11 is inserted by welding or the like. .

  The present invention gantry 40 shown in FIG. 9 uses a general reinforcing bar which does not form a male screw on the surface as the left and right columns 41, 41, and hooks for width stop bars externally fitted to the columns 41 to move up and down. Each of the cylindrical portions 44a (45a, 46a, 47a) of the tool 44, the lower-stage hook-and-loop hook 45, the upper-stage hook-and-loop hook 46, and the upper main-bar hook 47 is connected to each of the tube portions 44a (45a). , 46a) can be fixed to a predetermined height position by tightening the mounting screws 44c (45c, 46c). In this example, the cylindrical portion 46a of the upper hooking hook 46 and the cylindrical portion 47a of the upper main hook 47 are joined and integrated, and the mounting screw 46c is provided on the integrated cylindrical portion 46a. . Although the cylindrical portion 46a and the cylindrical portion 47a are not shown, they can be formed separately and provided with a mounting screw on the cylindrical portion 47a of the upper main bar hook 47. The mounting screw 44c (45c, 46c) is formed of a bolt screwed to a female screw made of a nut 44d (45d, 46d) or the like joined to each cylindrical portion 44a (45a, 46a) by welding or the like. The gantry 40 of the present invention, like the gantry 10 (see FIG. 1), connects the left and right columns 41, 41 near the lower ends with a coupling member 42, and is provided with a height adjuster 20 at the lower end of each column 41. It is. The striking support 55 for the left and right struts 41 and 41 of the gantry 40 of the present invention is made of an iron material, and is connected to the left and right strut insertion cylinders 55a and 55a through which the strut 41 is inserted. Both ends of 55b are joined by welding or the like, and can be fixed to a predetermined height position of the gantry 40 by tightening a mounting screw 55c provided on each column insertion cylinder 55a. The mounting screw 55c is a bolt that is screwed to a female screw made of a nut 55d or the like joined to the cylindrical portion 55a by welding or the like.

  As shown in FIGS. 2 to 8, the method of the present invention using the above-described gantry 10 performs the following steps according to the following procedure. In the present embodiment, two upper upper bars consisting of the upper upper main bars 25 and the lower upper main bars 31 are arranged, and the additional striking bars 36 are arranged on the upper end side.

(Mounting step)
In this step, as shown in FIG. 2, a plurality of mounts 10 whose upper ends are opened on a lower frame plate 22 provided in advance are arranged with a longitudinal interval L (for example, L = 1,000˜ (1,500 mm) is opened and placed upright. As shown in FIGS. 1 (A) and 1 (B), each gantry 10 includes a width-retaining bar hook 14 and a lower tie bar puller in order from the lower side to the upper side of the connecting member 12. The integrated hook 15 and the integrated upper hook hook 16 and upper main hook 17 are provided at a predetermined height according to the bar arrangement design, and A height adjuster 20 is provided at the lower end via the leg 19. Each gantry 10 is formed with a left-right width dimension W (for example, W = 350 to 1,800 mm) and a height dimension H (for example, H = 1,000 to 3,000 mm) according to the bar arrangement design. For each gantry 10, each height adjuster 20 is adjusted as necessary to adjust the height position and the verticality.

(Upper left and right upper main bar arrangement process)
In this step, as shown in FIGS. 2 and 8, the left and right upper main bars 25 a, 25 a introduced from above through the upper end opening portion 10 a of each gantry 10 are drawn into the upper main bars of the corresponding column 11 of each gantry 10. It is hung on the hook 17b of the hanger 17 (that is, the left upper main muscle 25a is hung so as to extend to the left upper main hanger hooks 17, 17... The right upper main bar hooks 17, 17... Are extended so as to extend in the front-rear direction), and each base 10 and each upper main bar 25 a are bound (not shown) with a wire. Each gantry 10 is united with the left and right upper main bars 25a by binding with each upper main bar 25a, and can prevent positional displacement and falling in a later process.

(Stirrup arrangement)
In this step, as shown in FIG. 2 and FIG. 8, a plurality of upper end open three-sided stirrups 26 (glutes) are hung on the left and right upper main bars 25a, 25a, and the front-rear interval N (for example, according to the bar arrangement design) , N = 100 to 200 mm). The stirrup 26 is formed of a reinforcing bar having a size according to the bar arrangement design, and the side portion 26c is erected from both the left and right ends of the lower side portion 26b, and a locking portion 26d is bent on the upper end side of the side portion 26c. The locking portion 26d is locked to the corresponding upper main muscle 25a to form an upper end open portion 26a.

(Lower main bar arrangement process)
In this step, as shown in FIG. 2 and FIG. 8, on the lower side portion 26 a of each stirrup 26, there is a plurality of bottoms introduced from above via the respective bases 10 and the upper end opening portions 10 a, 26 a of each stirrup 26. The main bars 27 are arranged with a left and right interval, and the locking portions 26d of the stirrups 26 and the lower main bars 27 are bound (not shown) with a line.

(Width stop reinforcement process)
In this step, as shown in FIGS. 3 and 8, the width stop bars 28 are hung on the hook portions 14 b and 14 b of the left and right width stop hooks 14 and 14 of each gantry 10. The width stop bars 28 are formed of reinforcing bars, bend the locking portions 28b on the left and right ends of the horizontal portion 28a, and connect each locking portion 28b to the cylindrical hooks of the corresponding width stop bar hooks 14. It is inserted into the portion 14b from above and is in a locked state.

(Abdominal muscle placement process)
In this step, as shown in FIGS. 3 and 8, the left and right sides of the left and right on the plurality of width stop bars 28 are inserted from above through the tops 10a and 26a of the tops 10 and the stirrups 26, respectively. Abdominal muscles 29 and 29 are arranged. Bundling of each abdominal muscle 29 and stirrup 26 by the number wire is performed in this step, or upper principal muscles 25a and 25b corresponding to the respective covering muscles 34 in the first covering muscle arranging step described later are bound by number wires (not shown). After that.

(Lower upper upper bar arrangement process)
In this step, as shown in FIG. 4 and FIG. 8, the lower knurled muscles 30 are hung on the left and right lower knurled muscle hooks 15, 15 of each gantry 10, and A plurality of lower upper major bars 31 inserted from above via the upper end 10a, 26a of the gantry 10 and the respective stirrups 26 are arranged with a left-right spacing and, if necessary, the lower upper major bars 31 and the lower stage. The hairpin 30 is tied (not shown) with a wire. The lower knurled bar 30 is made of a reinforcing bar, and is arranged so as to be hooked on the hooking portion 15b of the lower knurled bar hook 15 corresponding to both ends.

(Upper middle upper bar reinforcement process)
In this step, as shown in FIG. 5 and FIG. 8, the upper knurls 32 are hung on the upper and lower knurls 16 , 16 of each gantry 10, and each gantry 10 is placed on the knurls 32. In addition, a plurality of intermediate upper main bars 25b inserted from above via the upper end opening portions 10a, 26a of the respective stirrups 26 are arranged with a left-right interval. The plurality of intermediate upper main bars 25b together with the left and right upper main bars 25a and 25a arranged in the left and right upper main bar reinforcing step form the upper upper bar 25.

(First covering reinforcement arrangement process)
In this step, as shown in FIG. 5 and FIG. 8, each star wrap 26 is brought close to the upper upper bar 25 composed of the left and right upper main bars 25 a, 25 a and a plurality of intermediate upper main bars 25 b. A first covering bar 34 is arranged for each lap 26, and upper main bars 25a and 25b corresponding to the respective covering bars 34 are bound (not shown) with a number line. Each covering bar 34 is formed of a reinforcing bar having a size according to the bar arrangement design, hangs down the side part 34b from the left and right ends of the upper side part 34a, and bends a locking part 34c on the lower end side of the side part 34b. Each locking portion 34c is locked to the corresponding abdominal muscle 29. In addition, the covering bar | burr 34 may abbreviate | omit the latching | locking part 34c.

(Strike support placement process)
In this step, as shown in FIGS. 6, 7, and 8, the striking support 35 is stretched over the left and right struts 11, 11 of each gantry 10, and the striking force is increased above the first covering bar 34. The support 35 is disposed. The striking support tool 35 is disposed at a predetermined height position by a female screw 18 screwed into the support column 11 by inserting the support column 11 into the left and right support column insertion cylinder portions 35a.

(Additional bar arrangement process)
In this step, a plurality of additional reinforcing bars 36 are arranged on the connecting portion 35a of the additional support tool 35 with a left-right interval.

(Second cover placement process)
In this step, the second covering bars 37 are arranged on the plurality of additional reinforcing bars 36, and the second covering bars 37 and the respective additional reinforcing bars 36 are bound (not shown) with a line. The second covering bar 37 is formed of a reinforcing bar having a size according to the bar arrangement design, and the side part 37b is hung from the left and right ends of the upper side part 37a. Although the illustration of the second covering bar 37 is omitted, like the first covering bar 34, a locking part is bent at the lower end side of the side part 37b, and each locking part corresponds. The abdominal muscles 29 may be locked.

(Procedure of the present invention construction method)
The construction method of the present invention according to the first embodiment includes the above-described gantry arrangement process, upper left and right upper main bar arrangement processes, stirrup arrangement process, lower main bar arrangement process, width stop reinforcement arrangement process, abdominal muscle arrangement Reinforcement process, lower upper principal reinforcement arrangement process, upper middle reinforcement arrangement process in the upper stage, first covering reinforcement arrangement process, additional support placement process, additional reinforcement arrangement process, and second reinforcement Each step of the bar arrangement process is performed in this order, and the beam bar arrangement structure shown in FIG. 7 is obtained. As shown in FIG. 7A, the arrangement of the left and right frame plates 23, 23 is performed after the second cover placement step and before the gantry placement step (not shown). There is.

  In the method of the present invention according to the present embodiment, the left and right upper principal bars 25a, 25a that are input from above through the upper end opening portion 10a of the gantry 10 in the upper left and right upper major bar reinforcement step The upper main muscle hooks 17 corresponding to the left and right struts 11 can be extended to each other, and in the lower main bar arrangement process, the upper end opening portions 10a and 26a of the gantry 10 and the stirrup 26 are provided. The long lower main bars 27, 27... Input from above can be directly arranged on the stirrup 26. Further, in the upper main bar arrangement process in the lower stage, the upper end opening 10a of each gantry 10 and each stirrup 26 is opened. , 26a can be directly placed on the lower upper barb muscle 30 in the upper upper bar reinforcement in the middle of the upper stage. 1 Further, since the long middle upper main bars 25b, 25b... Thrown from above through the upper end open portions 10a, 26a of the respective stirrups 26 can be directly arranged on the knurled bar 32, they are adjacent in the longitudinal direction of the main bars. It is possible to prevent the increase in work man-hours by reducing the number of joints between the upper main bars and the lower main bars as compared with the prior art.

  In addition, the present construction method according to the present embodiment can directly arrange the long lower main bars 27, 27... On the stirrup, so that it is not necessary to use the conventional kanzashi and jack to be removed. Can be prevented from increasing. Further, according to the method of the present invention, the necessary number of open upper side three-sided stirrups 26, 26... Can be disposed at a time before arranging the lower main bars 27, 27. Compared to the conventional case, the arrangement of the stirrup does not require much labor, and it is possible to prevent an increase in work man-hours. Further, according to the construction method of the present invention, a plurality of elongated reinforcing bars 36, 36... Can be arranged on the support member 35 for increasing hits, so that the additional reinforcing bars 36, 36.

[Second Embodiment]
FIG. 10 shows a beam bar arrangement structure obtained by the beam bar arrangement method according to the second embodiment of the present invention. The beam reinforcement method according to the present embodiment omits the additional reinforcement 36 in the beam reinforcement method (see FIGS. 2 to 8) according to the first embodiment. The beam reinforcement method according to the present embodiment omits the additional support placement process, the additional reinforcement arrangement process, and the second covering reinforcement arrangement process of the first embodiment, and has been described above. Frame placement process, upper left and right upper main bar arrangement process, stirrup arrangement process, lower main bar arrangement process, width stop reinforcement arrangement, abdominal muscle arrangement process, lower upper main arrangement process, upper middle Each step of the upper main bar arrangement process and the first covering bar arrangement process is performed in this order, and the beam arrangement structure shown in FIG. 10 is obtained. The arrangement of the left and right frame plates 23, 23 may be performed after the first covering reinforcement arrangement process or before the gantry arrangement process (not shown).

[Third Embodiment]
FIG. 11 shows a beam bar arrangement obtained by the beam bar arrangement method according to the third embodiment of the present invention. The beam bar arrangement method according to the present embodiment omits the lower upper main bar 31 in the beam bar arrangement method (see FIGS. 2 to 8) according to the first embodiment. The beam bar arrangement method according to the present embodiment omits the lower main bar arrangement process of the lower stage of the first embodiment, and the above-described gantry arrangement process, upper and lower upper main bar arrangement processes, stirrup Arrangement process, lower main bar arrangement process, width stop reinforcement arrangement process, abdominal muscle arrangement process, upper main reinforcement arrangement process in the upper middle, first covering reinforcement arrangement process, support tool placement process for additional hitting, increase Each of the striking bar arrangement step and the second covering bar arrangement step is performed in this order, and the beam arrangement structure shown in FIG. 11 is obtained. The arrangement of the left and right frame plates 23, 23 may be performed after the second covering reinforcement arrangement process or before the gantry arrangement process (not shown).

[Fourth Embodiment]
FIG. 12 shows a beam bar arrangement obtained by the beam bar arrangement method according to the fourth embodiment of the present invention. The beam reinforcement method according to the present embodiment omits the lower upper main reinforcement 31 and the reinforcing bar 36 in the beam reinforcement method according to the first embodiment (see FIGS. 2 to 8). It is. The beam bar arrangement method according to the present embodiment includes the lower main upper bar arrangement step, the additional hitting support arrangement step, the additional hitting bar arrangement step, and the second covering reinforcement arrangement according to the first embodiment. Omitting the muscle process, the above-mentioned gantry placement process, upper left and right upper main bar arrangement process, stirrup arrangement process, lower main bar arrangement process, width stop reinforcement arrangement process, abdominal muscle arrangement process, middle of the upper stage Each step of the upper main bar arrangement process and the first covering reinforcement arrangement process is performed in this order, and the beam arrangement structure shown in FIG. 12 is obtained. The arrangement of the left and right frame plates 23, 23 may be performed after the first covering reinforcement arrangement process or before the gantry arrangement process (not shown).

[Other embodiments]
In the beam bar arrangement method according to the second to fourth embodiments, the gantry 10 shown in FIG. 1 is used as the gantry, but it is also possible to work using the gantry 40 shown in FIG. Furthermore, as the gantry 10 and 40, the thing which abbreviate | omitted the height adjustment tool 20 may be used according to the condition of the field.

DESCRIPTION OF SYMBOLS 10 ... Base, 10a ... Opening part of upper end, 11 ... Left and right support | pillar, 12 ... Connecting member, 14 ... Hook for width stop muscles, 15 ... Hook for lower knots, 16 ... Pull for kashk Hanging device, 17 ... Hook for upper main muscle, 18 ... Female screw, 19 ... Leg, 20 ... Height adjustment tool, 22 ... Lower frame plate, 23 ... Left and right frame plates, 25 ... Upper main muscle of upper stage, 26 ... Stirrup (girdle), 27 ... Lower main muscle, 28 ... Width-reducing muscle, 29 ... Abdominal muscle, 30 ... Lower chin muscle, 31 ... Lower upper chin, 32 ... Upper chin muscle, 34 ... First Covering bar, 35 ... support for additional hitting, 36 ... additional hitting bar, 37 ... second covering bar, 40 ... pedestal, 41 ... left and right struts, 42 ... connecting member, 44 ... hooking tool for width stop bar, 45 ... Lower chinstrap hook 46, Upper chinstrap 47, Upper main hook 55, 55 Hitting for support, the height of the H ... stand, before and after the interval of L ... stand, N ... before and after the interval of the stirrup, W ... width of the frame,

Claims (5)

In the construction method that arranges beams for beams using main bars and stirrups,
On the lower frame plate, the hooks for the width-retaining bars, the hooks for the hairpins, and the upper main bars in order from the bottom to the top in the upper part of the connecting members in the left and right columns where the lower ends are connected by the connecting members A platform arrangement step of arranging a plurality of racks having an upper end opened with hooks for use in a standing state with a front-rear interval;
The left and right upper main bars introduced from above through the upper end opening of each base are passed to the upper main bar hooks of the corresponding column of each base, and the left and right upper main bars are connected to each base and the upper main bars. The muscle process,
A stirrup bar arrangement process in which a plurality of top-side open three-sided stirrups are placed on the left and right upper main bars with a front-rear interval in a suspended state,
On the star wrap, a plurality of lower main bars thrown from above via each mount and the upper open end of each star wrap are arranged with a left and right spacing, and the lower main bar arrangement that binds the star wrap and the lower main muscle Process,
A width-restricting bar arrangement process for passing a width-retaining line to the left and right width-retaining-line hooks of each base;
An abdominal muscle arrangement process for arranging the left and right abdominals that are input from above through the upper end opening locations of each gantry and each stirrup on a plurality of width stop bars,
Hang the tie bar to the left and right tie bar hooks of each gantry, and move the middle upper main muscles inserted from above through the upper end of each gantry and stirrup on the chin bar. An intermediate upper bar arrangement process with an interval,
The covering muscles are arranged close to each stirrup on the left and right and middle upper principal muscles, and the covering muscles arranging step for binding the upper principal muscles corresponding to the respective covering muscles is performed in this order. Reinforcement method for beams. After the covering reinforcement arrangement process,
A striking support placement step for placing the striking support over the struts on the left and right sides of the gantry,
A reinforcement bar arrangement process in which a plurality of reinforcement bars are arranged with a left-right interval on the support member for reinforcement,
The beam reinforcement according to claim 1, wherein a second covering bar is disposed on the reinforcing bar, and the second covering bar and the second covering bar arranging step for binding the additional reinforcing bars are performed in this order. Construction method. In the gantry placement step, for each of the plurality of gantry, use one provided with hooks for the upper and lower two-stage hairpin on the left and right columns,
In the middle of the abdominal muscle reinforcement step and the intermediate upper principal reinforcement arrangement step, the lower tie bar muscles are hung on the lower tie bar hooks on the left and right sides of each gantry, and each gantry bar And performing a lower upper main bar reinforcement step of arranging a plurality of lower upper main bars inserted from above through the upper end opening of each stirrup with a left-right spacing,
3. The beam according to claim 1, wherein, in the intermediate upper main bar reinforcement step, the intermediate upper main bar is used as the upper upper main bar using the upper barb hook as the hook bar hook. Reinforcement method. In the stand used for the beam reinforcement method,
Left and right struts that are connected to each other by a connecting member, and a width-retaining bar hooking tool provided in order from the lower side to the upper side of the right and left column connecting members, a hooking bar hooking tool, and A pedestal used for a bar arrangement method for beams, comprising an upper main bar hook and having an open upper end. The left and right struts are formed of reinforcing bars whose surfaces are male screws,
Each of the above-mentioned width-retaining bar hook, the hooked bar hook, and the upper main bar hook is provided with a female screw threaded to the male screw of the column, and includes a cylindrical portion through which the column is inserted. The stand used for the bar arrangement method for beams according to claim 4 which supports a cylinder part.

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