JP5382394B1 - A method for linking and installing a reinforced steel bar and a reinforced steel frame for the same. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent connection rubbing and disengagement when connecting divided reinforcing bar rods and building them as a connecting reinforcing bar frame.
[MEANS FOR SOLVING PROBLEMS] A first stage of a split reinforcing bar rod 1 is installed in a vertical pile 2 and connecting portions 4 of the second stage split reinforcing bar rods 1 are juxtaposed and fixed to each other. The connecting members 19 are held and fixed so as to be bridged by the connecting members 19 between the nearest reinforcing frames 8, and the connecting members 19 are the locking connecting members 21 having the locking portions 20 at both ends, and the reinforcing frames 8 are hooked together. The connecting member 19 is bridged and fixed to each reinforcing frame 8 between both ends of the split reinforcing bar 1 as a stretched connecting member 22 and the reinforcing frame of the next stage split reinforcing bar 1 is supported. 8 and extending and holding and fixing each stage to be an integrally connected reinforcing bar frame 1a, and the nearest reinforcing frame 8 adjacent to the divided reinforcing bar bar 1 is connected to the connecting member 19 or the locking connecting member. 21 or the extended connecting member 22 is held and fixed by the bridge to form an integrally connected reinforcing bar frame 1a. .
[Selection] Figure 1

Description

  TECHNICAL FIELD The present invention relates to a method for connecting and installing divided reinforcing bars to which the reinforcing bars assembled by division are connected to each other and a connecting reinforcing bar frame for connecting and connecting the reinforcing bars.

  Conventionally, it is used for cast-in-place piles (in which a cylindrical reinforcing bar constructed in the field is dropped into a vertical shaft of excavated ground, and then concrete is poured into a hole and hardened to form a pile). When a reinforcing bar is dropped into the excavated ground, a plurality of upper and lower reinforcing bars are connected and connected to form an integrated connecting reinforcing bar.

  The reinforcing bar rod is a split reinforcing rod rod in which a ring-shaped hoop bar and a reinforcing frame and longitudinal main bars are assembled in a lattice shape, and when the divided reinforcing rod rods are connected in series, the members connected in series are: The longitudinal main bars are in contact with each other with a sleeve-like screw member in a state where they are in contact with each other, or are similarly crimped with a sleeve, or the longitudinal main bars are juxtaposed with each other and crimped with a sleeve to the connecting and connecting portion. Then, a grout (a fluid liquid to be injected to fill a cavity, gap, gap, etc.) is injected into the connecting portion of each of the above screw members and sleeves, and the gap is filled to reinforce the divided reinforcing bar rod. Are connected to form a connected rebar frame.

  Further, the longitudinal main bar ends of the reinforcing bar rods are arranged side by side in contact with each other by a predetermined amount, and held and fixed at predetermined positions of the side by side with U-bolts, binding wires, etc. It was generally done.

  However, with regard to the welded structure of the main reinforcement, the Japan Road Association issued in March 2012 “Road Bridge Specification / Description” in “19.8 Production and Installation of Reinforcing Bars”. However, it is stated in the proviso that “... in the assembly of reinforcing bars, welding must not be performed to maintain the shape of the assembly.”, And in its explanation, “…, it is difficult to ensure construction quality by welding. Because there is a possibility that defects such as cross-section reduction of reinforcing bars will occur, it will be prescribed that the main reinforcing bar, which is the main component of the reinforcing bar cage, should not be used for direct welding. Measures are rushed.

  Therefore, as a prior art related to the construction of the reinforcing bar rod, “using the coupler nut 10 and the lock nut 11, the core bar 2 of the upper column reinforcing bar rod B is changed to the core bar 2 of the lower column reinforcing bar rod A. After connecting, the plate 12 is lowered, the outer reinforcement 1 of the upper column reinforcement bar B is lowered, and the upper and lower outer reinforcements 1 are connected to each other. There is a "how to build a kite". (For example, see Patent Document 1)

  Further, as a related prior art, an inner plate of a plurality of plates in the configuration of the long hole 7 of the three plates 1 of the upper plate 2, the middle plate 3 and the lower plate 4 is moved in one direction and inserted into the long hole 7. After the main bars of the existing reinforcing bar rod and the newly installed reinforcing bar rod are pressure-bonded by the cooperation of the plurality of plates, the plurality of plates are locked and connected to the main bars. Then, there is a “rebar rod connection method and apparatus” showing an embodiment relating to the connection to be crimped. (For example, see Patent Document 2)

Japanese Patent Laid-Open No. 8-319694 JP-A-7-97863

  The conventional method of building reinforcing bar used for cast-in-place piles is a construction method in which reinforcing bar is connected in multiple stages to make an integrated reinforcing bar. As a result, many problems and solutions to the connection method that replaces the welding are required.

  In other words, now that the main bar welding method is no longer accepted, the main bar connection used for rebar rods is the simplest and most cost-effective connection that holds and fixes the parts that are connected side by side with U-bolts, cable ties, etc. Although the method has been conventionally used, the holding force is weak, it cannot withstand the high weight when erected and connected, and the connection part is rubbed, becoming longer than the originally designed predetermined length, and its position Since the connection may be disengaged due to rubbing, it has been a big problem, and a proposal for a simple and inexpensive connection and building method with a holding force has been demanded.

  In addition, the weakness of the holding force of the connecting method for holding and fixing the above-described parallel connection portions occurs most frequently when the reinforcing bar rod (divided reinforcing bar rod) is lifted by a crane or the like and transported and installed. Therefore, it prevents deformation of the reinforcing bars by preventing the main bars from twisting, the position of each locking part from rubbing at that time, and preventing the deformation of the whole connected reinforcing bars instead of the split reinforcing bars. Therefore, it is required to prevent the above deformation.

  In addition, the above-described increase in the weight of the reinforcing bar has recently increased the thickness of the reinforcing bar to be used in response to the demand for seismic resistance. Naturally, the reinforcing bar has also increased in weight. Conventional mounting brackets and the like are generally used without changing to correspond to the high weight, and as described above, there are many problems due to rubbing of the connection portion, etc. However, the thing which can respond to high weight was calculated | required.

  Furthermore, in the other background art described above, it is said that the connection holding force can be secured by crimping the connecting portion to be connected and connected by a sleeve, or screwing the connecting portion with a sleeve-like screw member. Anxiety remains in the length change due to the friction of the connecting part, and further improvement in cost and workability is required. Crimping with a sleeve takes time with a crimping device such as a hydraulic pressure and its work procedure, and also with a screw member The connection requires a lot of work such as screwing work with the screw member and injecting grout into the gap between the connection parts, and improvement in cost and workability is required.

  Therefore, the “method of erection of the pre-assembled column reinforcing bar” disclosed in Patent Document 1 disclosed in the prior art uses the coupler nut 10 and the lock nut 11, and thus has the same problem as the screw member described above, and costs Improvement of workability is required.

  In addition, the “rebar rod connection method and apparatus” of Patent Document 2 is an elongated hole in which one main plate of a plurality of plates is moved in one direction and both main bars of an existing reinforcing rod and a new reinforcing rod are provided in the plurality of plates. 7 is described as cooperative crimping by rubbing in the reverse direction, and this crimping action is a connection action similar to a U-bolt used in the past, and there is a risk of rubbing with its holding force. Although the holding force by the tightening is strong in the tightening direction, the holding force in the rubbing direction perpendicular to the holding direction is weak, and the holding force in the rubbing direction is the same as the conventional U-bolt holding force. A proposal for a weak and holding connection method is required.

  In view of such a problem, the present invention is to hold and fix the bridge so that the reinforcing frames are bridged with a connecting member or a locking connecting member so as to straddle the first and second connecting portions of the reinforcing bar. Reinforcement frames on both ends of the reinforcing steel bar are bridged and held by extension connection members, and the extension connection members are extended to the reinforcement frame closest to the connection part of the next stage so as to straddle the connection parts of the first and second stages. By holding and fixing the bridge to the reinforcement frame at the next stage, the main reinforcing bars that are the connecting parts of the divided reinforcing bar rods are firmly connected without welding and built as an integral connecting reinforcing bar frame, By connecting the connecting member with a simple structure and the reinforcing bar rod connection structure, it is possible to connect the required main bars without welding at low cost, and by preventing the entire connecting reinforcing bar rod from being distorted by the elongated connecting member. The object is to solve the above-mentioned problems.

In order to solve the above-mentioned problem, the present invention provides a first solution means that the first stage of the split reinforcing bar is built in the excavated ground and the connecting portion of the split reinforcing bar is protruded by a predetermined amount from the ground. Next, the connecting portion of the first-stage main reinforcing bar is juxtaposed to the connecting portion of the second-stage split reinforcing bar rod, and the connecting portions of the two juxtaposed bars are U-bolt fittings or binding wires, etc. And fixing means such as mounting brackets or binding wires so as to bridge a plurality of connecting members of a predetermined length between the first and second reinforcing frames closest to each other and across the connecting portion. By holding and fixing the bridge, by connecting and building each integrated reinforcing bar frame in the same way, connecting and connecting each step of the reinforcing bar frame in turn,
The split reinforcing bar is fixed by bridging the reinforcing frames so as to bridge the reinforcing frames so that the connecting portions of the predetermined length are set in parallel and the position frames are not rubbed and disconnected. It is supposed that it will be built as an integral connecting rebar frame.

Further, as a second solution, a latching coupling member having latching portions formed at both ends of the coupling member is used, and the reinforcing frames immediately adjacent to the connecting portions connected in parallel are bridged and latched on the reinforcing frame. Depending on the consolidated construction method
In order to set the length of the connecting portion of the connecting reinforcing bar frame and prevent the position rubbing and disconnection from occurring, the locking connecting member hooks the reinforcing frames together and holds and fixes the bridge. Reinforcing rods are connected and connected to form an integrated connecting rod frame.

In addition, as a third solution, the bridge between the reinforcing frames near both ends of the divided reinforcing bar rod is extended to extend to the reinforcing frame of the divided reinforcing rod of the next stage beyond the connecting portion connected in parallel. As a connecting member, the stretched connecting member is bridged and held and fixed to each reinforcing frame, and is held and fixed to the reinforcing frame in the immediate vicinity of the connecting portion of the divided reinforcing bar by a fixing means such as a mounting bracket. Depending on the method
Set the length of the connecting reinforcing bar frame, and prevent the entire reinforcing frame of the split reinforcing bar rod and the integral connecting reinforcing bar frame from being distorted and rubbed and disconnected. It is assumed that the divided reinforcing bar rods are connected and connected to be connected and built as an integral connecting reinforcing bar frame.

Further, as a fourth solving means, the vicinity of the main reinforcing bar end portion of the divided reinforcing bar rod is provided as a connecting portion having a predetermined length so that a plurality of divided reinforcing bar rods can be connected and connected to form an integral connecting reinforcing bar rod. The connecting portions of the two to be connected are arranged side by side in abutting manner, and the connecting portions of the two juxtaposed portions are held and fixed by a fixing means such as a U-bolt fitting or a binding wire, and a connecting member having a predetermined length is used. In addition, the reinforcing frames in the vicinity of the juxtaposed and connected portions are bridged at a plurality of locations and are formed by holding and fixing with a fixing means such as a mounting bracket or a binding wire.
The length of the connecting reinforcing bar frame is set, and the reinforcing frames of the divided reinforcing bar rods are connected and held by the connecting member so that the position rubbing and disconnection do not occur, thereby forming the integrated connecting reinforcing bar frame. It is said.

Further, as a fifth solving means, a locking connection in which the reinforcing frames in the vicinity of the connecting parts connected in parallel are bridged and hooked portions are formed at both ends of the connecting member so as to be hooked to the reinforcing frames. By making it a member,
The length of the connecting reinforcing bar frame is set, and the reinforcing frames of the divided reinforcing bar rods are hooked by the locking connecting members and bridged and held and fixed so that the position rubbing and disconnection do not occur. It is supposed to be formed as a connecting rebar frame.

Further, as a sixth solution, the extension between the reinforcing frames in the vicinity of both ends of the divided reinforcing bar rod and the bridge extending by extending to the reinforcing frame of the divided reinforcing rod in the next stage beyond the connecting portion connected in parallel. By making it a connecting member,
Set the length of the connecting reinforcing bar frame and stretch the reinforcing frames with the extended connecting member so that the split reinforcing bar rod and the integral connecting reinforcing bar frame are not distorted, and the position rubbing and disconnection do not occur. It is assumed that it is formed by connecting and holding with a connecting member to form the integrally connected reinforcing bar frame.

The present invention solves the problem by the above-described means so that an effective effect can be obtained. In particular, the first solving means has an inner hoop line and a reinforcing frame inside the longitudinal main bar or the reinforcing frame. A predetermined number of connecting portions, which are arranged in a lattice shape on the outside and are held in a crossing manner by fixing means such as mounting brackets or binding wires to form a reinforcing bar rod having a predetermined shape, and are connected to the divided reinforcing rod rods. A connecting reinforcing bar that is provided at the end of the main reinforcing bar and is built as an integral connecting reinforcing bar frame that is dropped as a cast-in-place pile into the vertical shaft of the ground excavated while connecting the divided reinforcing bar rods at each stage in a plurality of stages at the connecting portion. In the consolidated construction method of the frame,
The first stage of the divided reinforcing bar is inserted and inserted into the vertical shaft of the excavated ground, and the connecting part of the divided reinforcing bar is supported in a state protruding by a predetermined amount from the ground, and then inserted into the second stage. The connecting portion of the reinforcing bar rod and the connecting portion of the protruding main reinforcing bar in the first stage are arranged side by side in abutting manner, and the two connecting portions arranged side by side are held and fixed by fixing means such as a U-bolt fitting or a binding wire, Next, a plurality of connecting members of a predetermined length are provided between the reinforcing frames adjacent to the first-stage and second-stage connecting parts held and fixed so as to bridge across the connecting parts and mounting brackets or A connecting rebar that is constructed by holding and fixing the bridge with a fixing means such as a binding wire, and connecting and connecting the divided reinforcing bar rods as a united connecting reinforcing bar frame. Depending on the method of connecting the housing,
The integrated rebar frame that is built while connecting and connecting the divided rebars is fixed so that the connecting parts are held and fixed by fixing means such as U-bolt fittings or binding wires, and the reinforcing frames are bridged by the connecting members. Since it is held and fixed with a fixing means such as a metal fitting or a binding wire, it is connected and connected, so there is no position rubbing in the connecting connection of the connecting reinforcing bar frame, and the total length does not deform, and the connection is not released due to the installation, Therefore, a wasteful work such as the repair of the deformation does not occur, and the work can be safely carried out, and the erection work time and the erection cost can be reduced.

  In addition, when connecting and connecting reinforcement frames with a connecting member in a built-in connection operation, the strength against deformation can be increased by holding and fixing with a fixing means such as a mounting bracket or a binding wire, and bolting, Further, the reinforcing frame and the connecting member can be welded, and can be connected and connected quickly by a simple welding operation.

  In addition, although there are the above-mentioned regulations for this welding, it is a regulation that should not be welded directly to the main bar, and is not a target for the reinforcing frame, and the reinforcing frame and the connecting member of the present invention The welding can be used without any problem, so that the connecting connection can be made by the above-described simple procedure, and the connecting strength and working time can be shortened and the cost can be reduced.

  In addition, since the length of the connecting member is set to a predetermined length, the reinforcing frames are bridged with the length of the connecting member without setting in advance the amount of connection of the connecting portions between the divided reinforcing bar rods. By connecting and connecting the connecting member and the reinforcing frame with a fixing means such as a mounting bracket or a binding wire, the total length of the integral connecting rebar rod can be accurately set, and thus the connecting operation is easy. As a result, the working time and the cost were reduced.

Thus, in the second solving means, the connecting member is a locking connecting member in which a hooking portion is formed at both ends of the connecting member, and the reinforcing frames immediately adjacent to the connecting portions connected in parallel are bridged together. According to the connecting construction method of the connecting rebar frame that is hooked to the reinforcing frame,
When the reinforcing frames are bridged and connected by the locking connecting members, the locking portions of the predetermined length of the locking connecting members can be hooked and connected to the reinforcing frames, so the main bars are connected in advance. By setting the juxtaposition amount for juxtaposing the parts with the predetermined length of the locking connecting member, the amount of connecting and connecting can be set accurately and quickly without adjusting the amount of juxtaposing connection and connection. The work of connection progressed, and it became a big effect on work, and the work time and the cost reduction were realized.

Thus, in the third solution means, the connecting member is bridged between the reinforcing frames in the vicinity of both ends of the divided reinforcing bar rod and extends to the reinforcing frame of the divided reinforcing bar rod of the next stage beyond the connecting portion to be connected in parallel. The extension connecting member is installed and bridged, and the extension connecting member is bridged and fixed to each reinforcing frame and fixed to the reinforcing frame in the vicinity of the connecting portion of the divided reinforcing bar in the next stage by fixing means such as a mounting bracket. By connecting and building the connecting rebar frame to hold and fix,
The stretched connecting member bridges and holds the reinforcing frames in the vicinity of both ends of the divided reinforcing bar so that the stretched connecting member prevents deformation when the reinforcing bar is lifted for building, and the extended connecting member further It is possible to connect the divided reinforcing bar rods together and to keep the connecting connecting portion deformed and the whole connecting reinforcing rod rods so as not to be distorted, thereby increasing the strength of the connecting connection and further preventing positional rubbing and disconnection. As in the case of the above-described second solving means, the amount of connection and connection can be set quickly and accurately, and the operation of connection and connection progresses.

Thus, in the fourth solution means, a predetermined number of hoop bars and a reinforcing frame are arranged inside or outside the longitudinal main bars in a grid pattern, and fixed by crossing with fixing means such as mounting brackets or binding wires. Forming a rebar rod of a predetermined shape, and a cylindrical divided rebar rod used for a cast-in-place pile that is dropped while connecting and connecting to a vertical shaft of the ground where the rebar rod is excavated, In the connecting part for connecting and connecting to form a connecting rebar frame by connecting and connecting,
In order to form an integrally connected reinforcing bar frame by connecting and connecting a plurality of the divided reinforcing bar rods, the vicinity of the main reinforcing bar ends of the divided reinforcing bar rods are provided as connecting portions of a predetermined length, and the two connecting portions to be connected to each other Are connected in parallel with each other, and the connecting portions of the two side-by-side connections are held and fixed by fixing means such as a U-bolt fitting or a binding wire, and the connection members connected in parallel are connected by a connecting member having a predetermined length. By bridging the above-mentioned reinforcement frames in the immediate vicinity of a plurality of locations and forming a bridge by holding and fixing with a fixing means such as a mounting bracket or a binding wire,
Since the reinforcing frames are bridged, held and fixed by fixing means such as mounting brackets or binding wires, etc. with the connecting member, the position of the connecting rebar frame is not rubbed or detached, and the position rub or There was no wasteful work such as repairing when it came off, and it was possible to safely carry out the erection work and to obtain a connected reinforcing bar frame that can reduce the work time and cost.

  In addition, since the length of the connecting member is set to a predetermined length, the reinforcing frames are connected to each other with the length of the connecting member without connecting and connecting while adjusting the parallel arrangement amount of the connecting portions of the divided reinforcing bar rods. Since the bridges can be connected and connected, the total length of the integral connecting bar can be set accurately and quickly, so that the connecting work can be done easily and quickly, and the working time and cost can be reduced.

  In addition, when assembling the divided reinforcing bar rods, the crossing points of the reinforcing frames provided in the vicinity of both ends of the divided reinforcing bar rods at the mounting positions of the reinforcing frame arranged in the lattice form of the divided reinforcing bar rods of the fourth solving means. When the mounting position is accurately positioned and assembled in advance, if the reinforcing bar is lifted and rubbed and the mounting position of the reinforcing frame is rubbed, a predetermined distance between the reinforcing frames to be connected and connected and a predetermined length Because the difference in length with the connecting member can be confirmed the position rubbing of the reinforcing frame, and as a countermeasure for the position rubbing, it can be handled by adjusting the mounting position when attaching the connecting member to the reinforcing frame. The correction work is easy, the length of the connecting reinforcing bar can be corrected on the spot, and the work time and the cost can be reduced.

  In addition, when connecting and connecting reinforcement frames for erection work with a connecting member, as described above, the bridge is held and fixed by fixing means such as mounting brackets or binding wires, and connected to the reinforcement frame. By welding the members, the connecting operation can be performed quickly and the strength against deformation can be increased, but the specific illustration is omitted.

Thus, in the fifth solution means, the connecting member is hooked at both ends of the connecting member so that the reinforcing frames in the vicinity of the connecting portions connected in parallel can be bridged and hooked to the reinforcing frame. By making the locking connecting member formed part,
By hooking the latching portions of the locking connection member of the predetermined length between the reinforcing frames, the juxtaposition amount for connecting the connecting portions of the main bars is set by the predetermined length of the locking connection member In addition, since the total length of the integrally connected reinforcing bar frame to be built can be easily set, the length of connecting and connecting can be set accurately and quickly, and the connecting and connecting work progresses, which is a great work effect.

Thus, in the sixth solving means, the connecting member is bridged between the reinforcing frames in the vicinity of both ends of the divided reinforcing bar rod and extends to the reinforcing frame of the divided reinforcing bar rod of the next stage beyond the connecting portion to be connected in parallel. By setting it as an extended connecting member that is installed and bridged,
The stretched connecting member bridges and holds between the reinforcing frames in the vicinity of both ends of the split reinforcing bar, so that the extended connecting member prevents deformation when the reinforcing bar is lifted for building, and the excavated ground When dropping into a vertical pile, the split connecting rods are connected and connected by the extended connecting members, and the connecting and connecting portions are deformed and held together so as not to be distorted. This is a great effect of preventing positional rubbing and disengagement. Like the above-described solution, the amount of connection and connection can be set accurately and quickly, so that the operation of connection and connection progresses.

It should be noted that, in the third and sixth solving means in which the extended connecting member is provided, a hooking portion similar to the locking connecting member is formed and similarly held and fixed by the bridge so that the connection connection work is performed. Can improve the effect.
Therefore, from these configurations and functions, the present invention has a practically significant effect.

It is a front fragmentary sectional view which shows the erection state of the division rebar 1 of the Example of this invention. It is a front view of the principal part which shows the assembly state of the split reinforcing bar rod 1 by the main reinforcement 7, the reinforcement frame 8, and the hoop reinforcement 10 of this invention. It is a perspective view of the principal part which shows the connection state of the main reinforcement 7, the reinforcement frame 8, and the hoop reinforcement 10 of this invention. It is a side view of the principal part which shows the connection state of the main reinforcement 7 and the hoop reinforcement 10 of this invention. It is a front view of the principal part which shows the connection state of the division | segmentation reinforcing bar rod 1 of this invention. It is a side view of the principal part which shows the adhering state of the connection member 19 and the reinforcement frame 8 of this invention. It is a front view of the principal part which shows the connection state of the main reinforcement 7 of this invention. It is a top view of the principal part which shows the connection state of the main reinforcement 7 of this invention. It is a side view of the principal part which shows the attachment state of the latching connection member 21 and the reinforcement frame 8 of this invention. It is an enlarged side view of the principal part which shows the attachment state of the latching connection member 21 and the reinforcement frame 8 of this invention. It is a front view of the principal part of the connection reinforcement rod 1a which shows the connection connection state of the extending | stretching connection member 22 of this invention.

Thus, in the first embodiment, the first stage of the split reinforcing bar is built in the vertical pile of the excavated ground and the connecting part of the reinforcing bar is protruded from the ground by a predetermined amount, and then the two steps. The connecting portion of the first stage is juxtaposed to the connecting part of the split rebar rod of the eye and the juxtaposed part is held and fixed by a fixing means, and then the nearest reinforcing frames of the first and second stages A connecting member of a predetermined length is provided so as to be bridged across a plurality of locations and the connecting portion, and is held and fixed by a fixing means. As a consolidated erection method,
Next, in the second embodiment, the connecting member is a locking connecting member in which a latching portion is formed at both ends of the connecting member, and bridges the reinforcing frames immediately adjacent to the juxtaposed and connected connecting portions. A connection erection method for hanging on the reinforcing frame;
Next, in the third embodiment, the connecting member is bridged between the reinforcing frames in the vicinity of both ends of the divided reinforcing bar rod and extends to the reinforcing frame of the divided reinforcing bar rod of the next stage beyond the connecting portion to be connected in parallel. The extension connecting member is installed and bridged, and the extension connecting member is bridged and fixed to each reinforcing frame and fixed to the reinforcing frame in the vicinity of the connecting portion of the divided reinforcing bar in the next stage by fixing means such as a mounting bracket. With the connecting construction method for holding and fixing, the length of the connecting portion is set and the reinforcing frames are connected and held by the connecting member or the locking connecting member, and the divided reinforcing bar rod and the integral connecting reinforcing rod rod are connected by the extended connecting member. As a result, it is possible to realize a method of connecting the divided reinforcing bar rods so as to be built as an integral connecting reinforcing bar frame by setting the length of the connecting portion.

Further, in the fourth embodiment, the vicinity of the main bar end portion of the split reinforcing bar rod is provided as a connection portion having a predetermined length, and adjacent connection portions are provided side by side, and the connection portions provided in parallel are provided with U bolts or bundling. A connecting reinforcing bar frame that is held and fixed by fixing means so as to bridge and fix the nearest reinforcing frames of the divided reinforcing bar rods to be connected by a plurality of connecting members while holding and fixing with a wire or the like;
In addition, a fifth connecting reinforcing bar frame as a locking connecting member having a predetermined length provided with a latching portion at both ends of the connecting member;
In the sixth embodiment, the reinforcement frame provided near the both ends of the divided reinforcing bar rod is provided with a stretched connecting member between the reinforcing frames and connected to the reinforcing frame immediately adjacent to the connecting portion of the divided reinforcing bar rod of the next stage. By the connecting rebar frame provided by extending the extended connecting member,
In order to accurately set the total length of the connecting reinforcing bar rods and prevent the position rubbing and disconnection from occurring, the reinforcing frames of the divided reinforcing bar rods are connected and held by the connecting members, and are latched by the locking connecting members and connected. Reinforced frames are stretched and connected so that the split rebar bar and the whole connecting bar bar are not distorted, and the length of the connecting part is set and the position is not rubbed or disconnected. It was possible to realize formation of the integrally connected reinforcing bar frame by connecting and holding the members.

  An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a divided reinforcing bar rod, which shows a state in which the divided reinforcing rod rod 1 is installed in a vertical shaft 2 excavated. First, the first-stage split rebar rod 1 is dropped into the excavated vertical shaft 2 and the connection portion 4 of the divided rebar rod 1 is projected from the drop port 3 of the vertical shaft 2. Are temporarily supported by the reinforcing bar drop-in support 5, and then the second-stage divided reinforcing bar 1 is suspended and transferred by the crane 6 to be connected to the first-stage divided reinforcing bar 1 and connected. The connecting rebar frame 1a, which will be described later, is formed.

Therefore, as shown in FIG. 2, the split reinforcing bar rods 1 are arranged so that the main bars 7 and the reinforcing frames 8 intersect each other in a lattice shape at predetermined positions near both ends and near the center. The main bars 7 are arranged in a grid pattern in the vertical direction inside the reinforcing frame 8 and the reinforcing frame 8 is cross-mounted and fixed by a mounting bracket 9, and a hoop bar between the holding and fixed reinforcing frames 8 and 8. A large number of 10 are arranged in parallel and arranged in the same lattice pattern as described above, and are attached and held and fixed by the binding wires 11 or the attachment fittings 9a to form the divided reinforcing bar rod 1 having a predetermined shape.
In addition, the attachment metal fitting 9 shows the attachment metal fitting 9 for external fastening attached with the reinforcement frame 8 from the outer side of the division | segmentation reinforcing bar rod 1, The attachment metal fitting 9a in a figure is the inside attached with the hoop reinforcement 10 from the division | segmentation reinforcing bar rod 1 inside. It is one Example which shows the attachment metal fitting 9a for fastening.

  Further, as shown in FIG. 3, the mounting bracket 9 has a substantially U-shaped side surface showing a commercially available substantially U-bolt shape, and the screw portion on both ends and the base end on the other end are the width of the reinforcing frame 8. The side surface is substantially U-shaped and is bent upright from both ends thereof, and the vicinity of the bent central portion is bent into a substantially U shape so as to correspond to the main muscle diameter. Screw portions 12 and 12 and substantially U-shaped crossing latching portions 13 and 13 are formed by standing and bending, respectively, and a substantially U-shaped side surface on the base end side is an attachment hook for locking the reinforcing frame 8. A mounting washer 15 formed as a stop 14 and used for mounting and fixing the mounting bracket 9 is plate-shaped and has insertion holes 16 and 16 corresponding to the screw portions 12 and 12.

  Then, as shown in FIG. 3, the attachment state of the intersection of the reinforcing frame 8 intersecting with the main reinforcement 7 is as follows. First, the attachment latching portion of the attachment fitting 9 with the main reinforcement 7 crossing the inside and the reinforcement frame 8 outside. 14 is locked from the outside of the reinforcing frame 8, the cross-hatch portions 13, 13 are locked from the inner side to the intersecting main muscle 7, and the ends of the screw portions 12, 12 are sandwiched between the reinforcing frames 8. The mounting washer 15 is attached so as to protrude outward from the reinforcing frame 8 and to insert the protruding screw portions 12 and 12 into the insertion holes 16 and 16 of the mounting washer 15 and press the reinforcing frame 8. As in the other embodiments shown in FIG. 4, nuts 17 and 17 are screwed to hold the main reinforcement 7 and the reinforcing frame 8 in a cross shape.

  In addition, the hoop muscle 10 that intersects the main bar 7 is attached to the binding line 11 by winding the main line 7 in the crossing state of the inner side and the reinforcing frame 8 and winding the binding line 11 in a crossing manner. The mounting bracket 9a is mounted in substantially the same manner as the mounting state of the intersecting portion of the reinforcing frame 8. In this difference, as shown in FIG. 4, a substantially U-shaped mounting latch corresponding to the diameter of the main bar 7 is provided. The hook 14 is locked to the main bar 7 by the portion 14a and the hoop bar 10 is locked to the cross hooking parts 13a and 13a. As shown in FIG. 2, the split reinforcing bar rod 1 having a predetermined shape is formed.

  In addition, in the attachment position of the reinforcement frame 8 and the hoop muscle 10 intersecting with the main reinforcement 7, in each embodiment, the main reinforcement 7 is on the inner side, and the reinforcement frame 8 and the hoop reinforcement 10 are arranged on the outer side. The mounting bracket 9 for external tightening and the mounting bracket 9a for internal tightening that are mounted and tightened from the inside of the reinforcing bar may be appropriately changed as outer mounting and inner mounting, respectively. Omitted.

  Thus, when the divided reinforcing bar 1 assembled as described above is installed in the vertical shaft 2 of the excavated ground shown in FIG. 1, the connecting connection is as shown in FIG. As shown in FIGS. 7 and 8, the end portions of the main reinforcing bars 7, 7,... Of the split reinforcing bar rods 1, 1 are arranged side by side and the connecting portions 4, 4 of the main reinforcing bars 7, 7 are connected to the U-bolt 18. , 18 (general commercial product), and in this state, the reinforcing frames 8 and 8 are connected by flat plate (or L angle or the like) connecting members 19 and 19 as shown in FIGS. The bridges are welded so as to be bridged, and the temporary fastening screws are tightened to connect the divided reinforcing bar rods 1 and 1 to form a connecting reinforcing bar frame 1a.

  9 and 10 shown as another embodiment is connected by a locking connecting member 21 having hooking portions 20 and 20 formed at both ends of a flat plate or a rod, and the connecting connection is the hooking. As shown in FIGS. 7 and 8, the connecting portions 4, 4 between the main bars 7, 7 arranged side by side are hooked on the U bolts 18, respectively. At the same time, the connecting members 21 and 21 are welded to the reinforcing frames 8 and 8 and the divided reinforcing bar rods 1 and 1 are connected and connected to form the connecting reinforcing bar frame 1a.

  Instead of welding the locking connecting members 21 and 21 to the reinforcing frames 8 and 8, the bolts passing through the reinforcing frames 8 and 8 and the locking connecting members 21 and 21 are replaced when the welding is impossible. Since the latching portions 20 and 20 of the latching coupling member 21 are latched to the coupling connection of the adjacent upper and lower divided reinforcing bar rods 1 and 1 of this embodiment, the coupling portion 4 to be coupled is connected to the coupling portion 4 to be coupled. Since the weight is not directly applied, it is possible to use an inexpensive binding wire 11 in place of the U bolts 18 and 18 used, thereby reducing the cost, but the illustration thereof is omitted.

  Thus, as shown in FIG. 11, the connecting connection using the extended connecting member 22 of another embodiment of the divided reinforcing bar rods 1, 1 is a reinforcing frame in the vicinity of both ends of the divided reinforcing bar rod 1 in the adjacent upper and lower stages. 8 and 8 is bridged by the extending connecting member 22 and is held and fixed by the mounting bracket 9 for outer fastening as described above together with the intersecting main reinforcing bars 7 and the extending connecting member 22 is connected to the divided reinforcing bar 1 of the next stage. It extends to the reinforcing frame 8 closest to the connecting portion 4 and is in a state of being held and fixed by the external fastening fitting 9 as described above together with the intersecting main reinforcing bars 7.

  When the second stage is connected and connected to the first stage, the connecting portions 4 and 4 of the main bars 7 and 7 to be connected are juxtaposed and the tip of the extended connecting member 22 extended is connected to the second stage. As described above, the reinforcing frame 8 is held and fixed together with the main reinforcement 7 by the mounting bracket 9 for external fastening, and the divided reinforcing bar rods 1 and 1 are connected and connected to form a connecting reinforcing bar frame 1a.

  In addition, the extending | stretching connection member 22 is formed in a flat plate, rod shape, L angle, etc., and according to the magnitude | size of the division | segmentation rebar bar | burr 1, arrange | positions several places on this peripheral surface substantially equally, and each of each reinforcement frame 8 and 8 is each. In addition, as described above, together with the main reinforcing bar 7, it is held and fixed by the mounting bracket 9 for external tightening, and the split reinforcing bar 1 is held so as not to be distorted such as torsion.

  Further, a connecting member 19 or a locking connecting member 21 for bridging the connecting portion 4 of the above embodiment is provided between the extending connecting members 22, 22,. However, the illustration is omitted.

Therefore, when the divided rebar bar 1 is dropped into the drop port 3 of the vertical shaft 2 by the crane 6 and built, when the first-stage divided bar bar 1 is first built, as described above, a reinforcing frame is previously provided. .. Reinforcing bar 1 having the connecting members 19, 19,.
Alternatively, the first-stage split rebar rod 1 in which the extension connecting members 22, 22,... Are held and fixed together with the main reinforcement 7 crossing the reinforcement frame 8 together with the external fastening fitting 9 is applied to the vertical shaft 2 of the excavated ground. The split reinforcing bar 1 is temporarily supported by the reinforcing bar drop support 5 in a state where the connecting part 4 of the split reinforcing bar 1 is projected by a predetermined amount from the ground.

  Then, the second-stage split rebar rod 1 is transported by the crane 6 to the vicinity of the connection portion 4 of the first-stage divided rebar rod 1 temporarily supported, and the first-stage protruding main reinforcement 7 connection portion 4 is transferred. Are arranged side by side in abutting fashion, and the tip ends of the connecting members 19, 19,... Or the extended connecting members 22, 22,. The reinforcing frame 8 and the connecting members 19, 19,... Or the extended connecting members 22, 22,... Are held and fixed, and the connecting portions 4, 4 of the main bars 7, 7 are screwed with U bolts 18, 18. The connecting reinforcing bar frame 1a is formed by holding and fixing.

  In addition, the length of the connecting member 19 or the extended connecting member 22 is set in advance so that the total length of the connecting reinforcing bar frame 1a formed by connecting and connecting can be accurately set, and the divided reinforcing bar rods at the first stage are set. The full length of the connecting reinforcing bar frame 1a is fixed to the reinforcing frame 8 by holding and fixing the tip of the connecting member 19 or the extended connecting member 22 to the reinforcing frame 8 of the split reinforcing bar 1 of the second stage. Can be set accurately.

  Then, as described above, the divided reinforcing bar rod 1 is connected and connected by the connecting member 19 or the extending connecting member 22, and then the second-stage divided reinforcing rod rod 1 is slightly lifted by the crane 6. The rebar drop support 5 that is temporarily supported by the drop opening 3 is extracted, the support of the first split rebar bar 1 is released, and then the second split rebar bar 1 in the lifted state is used as a vertical shaft. 2 and then, the second-stage split rebar rod 1 is protruded from the ground by a predetermined amount with the reinforcing bar drop-in support 5 as described above. Then, after the next stage, the divided reinforcing bar rods 1 are repeatedly connected and connected in the same manner, so that the connecting reinforcing bar frame 1a used for the cast-in-place pile is built.

  In addition, the locking connecting member 21 is built in substantially the same manner as the connecting member 19 and the extending connecting member 22 described above, and in the difference, the second-stage split rebar rod 1 is attached to the first-stage temporarily supported. After the transfer to the vicinity of the connection part 4 of the split reinforcing bar rod 1, the connection part 4 of the main bar 7 protruding from the first stage and the transferred connection part 4 are arranged side by side in abutment, and then the first and second stage reinforcement The hooks 20, 20 of the locking connection member 21 are hooked on the frames 8, 8, and the second-stage split rebar bar 1 is slightly lifted by the crane 6 and set to a predetermined length by applying a slight tension. In this state, the latching portions 20 and 20 of the locking connecting member 21 and the reinforcing frames 8 and 8 are held and fixed, and the connecting reinforcing bar frame 1a is built.

  It should be noted that the connecting rebar frame formed by connecting and connecting the engaging portions 20 and 20 of the engaging connecting member 21 by engaging with the reinforcing frames 8 and 8 and holding and fixing them with some tension. The length of the locking connecting member 21 and the positions of the latching portions 20 and 20 are set in advance so that the total length of 1a can be set accurately.

  In addition, the mounting brackets 9 and 9a or the binding wires 11 are used as the holding and fixing means for the reinforcing frame 8 and the connecting member 19, the locking connecting member 21 or the extended connecting member 22, respectively. A hole is formed in each of the member 19, the locking connecting member 21, or the extended connecting member 22 and may be bolted through the hole, or may be welded as described above, but the illustration is omitted.

  The method for connecting and building the reinforcing bar rods according to the present invention and the connecting reinforcing bar frame can be used for the connecting reinforcing bar rods that are constructed by connecting the divided reinforcing bar rods that are used for place fighting.

DESCRIPTION OF SYMBOLS 1 Reinforcement rod 1a Connection reinforcement rod body 2 Vertical shaft 4 Connection part 5 Reinforcement rod fall support body 7 Main reinforcement 8 Reinforcement frame 9, 9a Mounting bracket 10 Hoop reinforcement 11 Binding wire 18 U bolt 19 Connection member 20 Latching part 21 Locking Connecting member 22 Stretched connecting member.

Claims (6)

Predetermined numbers of bars are arranged inside or outside of the hoop bars and reinforcement frames in the form of a lattice with respect to the main bars in the vertical direction, and fixed and held by fixing means such as mounting brackets or binding wires to form reinforcing bar rods of a predetermined shape. A connecting portion having a predetermined length to be connected to the divided reinforcing bar rod is provided at the end of the main reinforcing bar, and is located in the vertical shaft of the ground excavated while connecting the divided reinforcing rod rods of each stage in a plurality of stages at the connecting portion. In the method of connecting and building reinforcing bars to be built as an integrated connecting reinforcing bar to be dropped as a pile,
The first stage of the divided reinforcing bar is inserted and inserted into the vertical shaft of the excavated ground, and the connecting part of the divided reinforcing bar is supported in a state protruding by a predetermined amount from the ground, and then inserted into the second stage. The connecting portion of the reinforcing bar rod and the connecting portion of the protruding main reinforcing bar in the first stage are arranged side by side in abutting manner, and the two connecting portions arranged side by side are held and fixed by fixing means such as a U-bolt fitting or a binding wire, Next, a plurality of connecting members of a predetermined length are provided between the reinforcing frames adjacent to the first-stage and second-stage connecting parts held and fixed so as to bridge across the connecting parts and mounting brackets or Fixing and fixing the bridge with a fixing means such as a tie wire, and connecting and connecting the divided reinforcing bar rods, and then building the integrated reinforcing bar frame as a single unit while connecting and connecting the divided reinforcing bar rods of each stage in the same manner. A method for erection of the connected reinforcing bar rod.   The connecting member is a locking connecting member in which a latching portion is formed at both ends of the coupling member, and bridges the reinforcing frames in the vicinity of the juxtaposed and connected connecting portions and latches on the reinforcing frame. The method of linking and building up the connecting reinforcing bar rod as described.   The connecting member bridges between the reinforcing frames in the vicinity of both ends of the divided reinforcing bar rods and extends to the reinforcing frame of the divided reinforcing bar rod of the next stage beyond the connecting portion to be connected side by side as an extended connecting member to bridge. 2. The connecting reinforcing bar according to claim 1, wherein the extending connecting member is bridged and fixed to each reinforcing frame, and is held and fixed to the reinforcing frame in the immediate vicinity of the connecting portion of the divided reinforcing bar by a fixing means such as a mounting bracket. Consolidation method for firewood. Predetermined numbers of bars are arranged inside or outside of the hoop bars and reinforcement frames in the form of a lattice with respect to the main bars in the vertical direction, and fixed and held by fixing means such as mounting brackets or binding wires to form reinforcing bar rods of a predetermined shape. , A cylindrical divided rebar rod used for cast-in-place piles that are dropped while connecting and connecting to the vertical shaft of the ground where the rebar rod is excavated, and connecting the divided rebar rods together to form a connected rebar frame In the connecting part for connecting and connecting,
In order to form an integrally connected reinforcing bar frame by connecting and connecting a plurality of the divided reinforcing bar rods, the vicinity of the main reinforcing bar ends of the divided reinforcing bar rods are provided as connecting portions of a predetermined length, and the two connecting portions to be connected to each other Are connected in parallel with each other, and the connecting portions of the two side-by-side connections are held and fixed by fixing means such as a U-bolt fitting or a binding wire, and the connection members connected in parallel are connected by a connecting member having a predetermined length. A connecting rebar frame characterized in that the reinforcing frames immediately adjacent to each other are bridged at a plurality of locations and are formed by holding and fixing with a fixing means such as a mounting bracket or a binding wire.   The connecting member is a locking connecting member in which hooking portions are formed at both ends of the connecting member so that the reinforcing frames in the vicinity of the connecting portions connected in parallel can be bridged and hooked to the reinforcing frame. The connection reinforcing bar frame according to claim 4.   The connecting member bridges between the reinforcing frames in the vicinity of both ends of the divided reinforcing bar rods, and extends to the reinforcing frame of the divided reinforcing bar rod of the next stage beyond the connecting portion to be connected in parallel. The connection reinforcing bar frame according to claim 4.

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