JP2018165456A - Beam bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beam bar which makes it unnecessary to measure the overlapped joint length of the overlapped portion of the rib at the site, and which is thereby excellent in workability.SOLUTION: There is provided a beam bar 100 comprising a lower unit 10 having U-shaped first rib 1A arranged at a predetermined pitch and each first rib 1A connected to a first horizontal stripe 3A and an upper unit 20 having U-shaped second rib 2A arranged at a predetermined pitch and each second rib 2A connected to a second horizontal stripe 4A, in which the corresponding first rib 1A and the second rib 2A are wrapped and connected with a predetermined overlapped joint length L. Both of the first horizontal stripe 3A and the second horizontal stripe 4A are connected to the inner side of both of the ribs 1A, 2A, the first horizontal stripe 3A is attached to the end portion of the first rib 1A, the second horizontal stripe 4A is attached to the inner side with the overlapped joint length L from the end of the second rib 2A, and the first horizontal stripe 3A and the second horizontal stripe 4A are in contact and aligned.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a beam line constituting a foundation beam or a beam connecting columns of a building.

  Arrangement of multiple stirrups while measuring the pitch between the stirrups along the longitudinal direction of the stirrups at the site. Attach at least staggered muscles and transverse muscles in advance at factories, etc. in order to make the work of attaching horizontal muscles (abdominal muscles) to the longitudinal muscles that make up the muscles and connecting multiple main muscles to the upper and lower inner sides of the staggered muscles as a unit There is a case where a construction method is carried out in which the unit is carried into the site and the units are connected to each other at the site. For example, Patent Literature 1 discloses a construction method for a foundation beam using a unitized reinforcing bar.

  There are various configurations of the units described above. As an example, the U-shaped ribs open upward are arranged at a predetermined pitch, and each rib is connected to a plurality of horizontal bars to form the lower unit. On the other hand, there can be mentioned a unit form in which U-shaped stirrups opened downward are arranged at a predetermined pitch, and each stirrup is connected to a plurality of lateral streaks to constitute an upper unit. The upper unit and the lower unit are brought into the field, the stirrups corresponding to each unit are connected to each other so as to secure a predetermined lap joint length, and the main bars are arranged in the stirrups. Is quickly constructed on site. In this unit form, a rectangular frame-shaped stirrup is assembled into a rectangular frame at the site, and the U-shaped stirrups constituting the upper and lower units are connected to each other. A rectangular frame-shaped streak is formed in the field. In addition, when the length in the longitudinal direction of the beam reinforcement is long, by arranging the beam reinforcement constructed in this way in the longitudinal direction, by connecting the lap joint to the main reinforcement constituting the unit via a separate main reinforcement, Long beam bars can be installed.

JP-A-11-141134

When connecting the upper and lower U-shaped stirrups as described above, it is stipulated that hooks bent at 90 degrees, 135 degrees, and 180 degrees are provided at the ends of each staggered line ( Architectural Institute of Japan Building Construction Standard Specification (JASS5) 2009, “Reinforcement Work”), therefore, stirrups with hooks at the ends are wrapped together to ensure a predetermined lap joint length There is a need to. In addition, the lap joint length between reinforcing bars with hooks at the end is determined by the concrete design standard strength Fc (Fc = 21N / mm ² etc.) and the type of reinforcing bars (SD295A, B, SD345, etc.) Generally, it varies variously between 20d and 40d (mm) (d is the name of the deformed bar).

  In this way, although the workability improves with the unitization of beam bars, on the site, both positions are measured while measuring the lap joint length of the overlapping parts of the staggered bars constituting the upper and lower units. Since both the connections are made using wires or the like, it actually takes a lot of work, and there is still much room for improvement in workability.

  The present invention has been made in view of the above-described problems, and relates to the beam bars composed of the upper and lower units, and it is possible to eliminate the need for measuring the lap joint length of the overlapping portions of the stirrups in the field, thereby improving the workability. The purpose is to provide excellent beam reinforcement.

  In order to achieve the above object, the beam stirrup according to the present invention has U-shaped first stirrups opened upward at a predetermined pitch, and each first stirrup is connected to the first lateral streak. An upper unit in which the lower unit and the U-shaped second stirrup opened downward are arranged at a predetermined pitch, and each second stirrup is connected to the second lateral streak, The first stirrup and the second stirrup corresponding to each other are connected by wrapping at a predetermined lap joint length, and the main rebar is connected to the inside of both the stirrups. The first lateral muscle and the second lateral muscle are both connected to the same side of either the outer side or the inner side of both the stirrups, and the first lateral muscle and the second lateral muscle One of which is attached to the end of the stirrup and the other is the end of the stirrup Only al the lap joint length is attached to the inside, it is characterized in that said first lateral stripes and the second lateral stripes are aligned in contact with.

  In the beam streak of the present invention configured as described above, the first lateral streak and the second lateral streak are both on the outer side and the inner side of both the stirrups. Are connected to the same side of one of them, and one of the first and second transverse bars is attached to the end of the stirrup, and the other is attached to the end of the stirrup by the length of the lap joint. Thus, the first lateral stripe and the second lateral stripe can be brought into contact with each other for alignment, and a state in which the lap joint length is automatically secured when this alignment is achieved can be formed. Therefore, the trouble of connecting the plurality of stirrups constituting the upper and lower units while measuring the length of the lap joint at the site can be saved, and excellent workability can be enjoyed. In addition, the beam reinforcement of this invention is applicable to both a foundation beam and the beam which connects columns. Also, with respect to the first stirrup and the second stirrup, both the first transverse streak and the second transverse streak are connected to the same side, either outside or inside both stirrups. However, in consideration of securing the cover, a configuration in which the transverse stripe is connected to the inside of the loose stripe is preferable.

  In another aspect of the beam according to the present invention, the first stirrup and the second stirrup are not provided with a hook at the end, and are attached to the end of the stirrup. The lateral muscles are alignment muscles and hook substitute muscles, and the lateral muscles are attached to the inner side of the lateral muscles. The ends of the lateral muscles are opposite to the side where the lateral muscles are attached. It is characterized in that a separate horizontal line that is a hook replacement line is attached.

  In the beam stiffener constructed in this way, since the first stirrup and second stirrup do not have hooks at their ends, the vertical streaks constituting the stirrup are bent and hooked. The trouble of forming can be saved. In addition, since there is no hook at the end of the stirrup, there is no obstacle that hinders the positioning in the process of dropping the upper unit straight into the lower unit below and positioning it. Thus, the corresponding second stirrup can be positioned smoothly. In addition, hooks are often caught on other parts at the site, which may hinder the delivery and assembly of stirrups in the field, but these problems also occur because the stirrups do not have hooks. It cannot happen. In this aspect, instead of omitting the hook, the horizontal stripe attached to the end of the stirrup is applied as the hook substitute. Considering that the hook has an effect of enhancing the fixing property of the reinforcing bar in the concrete, it is necessary to firmly connect the horizontal bar, which is a hook substitute bar, to the end portion of the rib bar by welding. On the other hand, the connection from the end of the stirrup to the stirrup of the horizontal streak, which is the alignment streak that is attached inward by the length of the lap joint, can be either a connection by a binding wire or a connection by welding Good.

  In another aspect of the beam of the present invention, each of the first stirrup and the second stirrup has a hook at one end and a hook at the other end. On the side provided with a hook at the end, the side streak as the alignment line is attached to the inside by the length of the lap joint from the end, and the side without the hook at the end Then, at the end portion, the lateral muscles that are alignment muscles and hook substitute muscles are attached.

  Compared to the mode in which the hook substitute bars are connected to the two ends of the U-shaped ribs by welding, the overall weight of the reinforcing bars can be reduced. Also, since there is a hook at one end of the U-shaped stirrup, dropping the upper unit diagonally with respect to the lower unit below it, the end of the first stirrup of the lower unit It is possible to position both of the stirrups while avoiding interference between the hooks of the upper part and the transverse streaks (lateral streaks for alignment and hook replacement) at the end of the second stirrup of the upper unit. .

  According to another aspect of the present invention, the U-shaped first stirrups that are open upward are arranged at a predetermined pitch, and each first stirrup is connected to the first lateral streak. And an upper unit in which U-shaped second stirrups opened downward are arranged at a predetermined pitch, and each second stirrup is connected to the second lateral streak. The first stirrup and the second stirrup corresponding to each other are connected by wrapping with a predetermined lap joint length, and the main rebar is connected to the inside of both stirrups. The first lateral muscle and the second lateral muscle are both connected to the same side of either the outer side or the inner side of both of the lateral muscles, and the first lateral muscle and the second lateral muscle Each of the muscles has a hook at the end, and both staggered muscles are The lateral bars, which are alignment bars, are attached on the inner side by the length of the joints, and the hooks of both the stirrups are oriented mutually opposite to the longitudinal direction of the beam bars, A horizontal stripe and the second horizontal stripe are in contact with each other and are aligned.

  In the beam stiffener constructed in this way, both the first stirrup and second stirrup have hooks at the two ends of both, but the hooks of both stirrups are inside the U-shape. In the process of dropping the upper unit straight into the lower unit below and positioning it, the hooks at the end of one stirrup The lateral stirrup of the other stirrup does not interfere, and the corresponding second stirrup can be smoothly positioned with respect to the first stirrup. In addition, the overall weight of the reinforcing bar can be reduced as compared with an aspect in which a separate horizontal bar that is a hook substitute bar is connected to the outside of the end portion of the U-shaped rib bar by welding.

  Furthermore, in another aspect of the beam according to the present invention, a U-shaped first stirrup opened upward is arranged at a predetermined pitch, and each first stirrup is connected to the first transverse streak. An upper unit in which the lower unit and the U-shaped second stirrup opened downward are arranged at a predetermined pitch, and each second stirrup is connected to the second lateral streak, Longitudinal stripes are arranged at a predetermined pitch, and each longitudinal stripe is connected to a third transverse stripe, arranged between the first stirrup and the second stirrup, and both of the stirrups. An intermediate unit for connecting the first stirrup and the longitudinal streak corresponding to each other, and the corresponding second stirrup and the longitudinal streak corresponding to each other with a predetermined lap joint length. A main bar is connected to the inside of both of the stirrups, the first stirrup and the first stirrup With respect to the second stirrup and the longitudinal muscle, the first transverse muscle, the second transverse muscle and the third transverse muscle are all on the same side of either the stirrup or the outside or inside of the longitudinal muscle. The first transverse stripe and the second transverse stripe are attached to the end of the stirrup or from the end to the inside of the lap joint length, and are attached to the longitudinal reinforcement. The third transverse bars are attached inward from the end of the longitudinal bars by the length of the lap joint when the corresponding first transverse stripes and the second transverse stripes are attached to the ends; When the corresponding first transverse bar and the second transverse bar are attached to the end of the longitudinal bar by the length of the lap joint from the end, the first horizontal bar is attached to the end of the vertical bar. And the third transverse stripe, and the second transverse stripe and the third transverse stripe contact each other. It is characterized in that it is aligned.

  In the beam reinforcement configured as described above, the lower unit and the upper unit are connected by an intermediate unit between them, so that a beam reinforcement with a higher beam can be formed.

  According to the beam streak of the present invention, the stirrup constituting the lower unit is quickly positioned with the length of the lap joint secured without measuring the length of the lap joint relative to the stirrup constituting the lower unit. Both can be connected and can enjoy much more excellent workability.

It is the perspective view explaining the lower unit and upper unit which constitute Embodiment 1 of the beam reinforcement of the present invention. FIG. 2 is a state diagram in which a lower unit and an upper unit shown in FIG. 1 are assembled. It is a perspective view of Embodiment 1 of a beam. It is the perspective view explaining the lower unit and upper unit which comprise Embodiment 2 of the beam reinforcement of this invention. FIG. 5 is a state diagram in which the lower unit and the upper unit shown in FIG. 4 are assembled. It is a perspective view of Embodiment 2 of a beam. It is the perspective view explaining the lower unit and upper unit which comprise Embodiment 3 of the beam reinforcement of this invention. FIG. 8 is a state diagram in which the lower unit and the upper unit shown in FIG. 7 are assembled. It is a perspective view of Embodiment 3 of a beam. It is the figure explaining Embodiment 4 of the beam reinforcement of this invention, Comprising: (a) is the schematic diagram explaining the lower unit, the upper unit, and intermediate unit which comprise Embodiment 4 of a beam reinforcement, (b ) Is a schematic diagram showing a state in which the lower unit, the intermediate unit, and the upper unit are assembled, and (c) is a schematic diagram of the fourth embodiment of the beam.

  Hereinafter, a plurality of embodiments of beam bars according to the present invention will be described in detail with reference to the drawings. In the example shown in the figure, the horizontal muscle, which is the alignment muscle, is connected to the inside of the longitudinal muscle that constitutes the rib muscle, but the lateral muscle, which is the alignment muscle, is connected to the outside of the vertical muscle that constitutes the rib muscle. Of course, you may do. In addition, the upper unit and the lower unit in the illustrated example are configured by arranging five stirrups at a predetermined pitch, but there are various numbers of stirrups constituting the unit other than the illustrated example. Of course. Further, a secondary stirrup may be disposed inside the stirrup as necessary.

(Embodiment 1 of beam reinforcement)
FIG. 1 is a perspective view illustrating a lower unit and an upper unit constituting Embodiment 1 of a beam of the present invention, and FIG. 2 is a state diagram in which the lower unit and the upper unit shown in FIG. 1 are assembled. FIG. 3 is a perspective view of the first embodiment of the beam.

  As shown in FIG. 1, the beam line is composed of a lower unit 10 and an upper unit 20 which are two upper and lower units. In other words, the beam line is composed of two units divided vertically. The

  In the lower unit 10, a first stirrup 1A having a U-shape opened upward and not provided with a hook at the end is disposed at a predetermined pitch s in the Z direction, which is the longitudinal direction of the beam, Inside the two ends of the first stirrup 1A, they are connected by a common first lateral streak 3A to maintain the unit posture shown in the figure. The predetermined pitch s is determined from the amount of necessary reinforcing bars in the concrete, such as 150 mm and 200 mm. Further, both the first stirrup 1A and the first horizontal bar 3A are made of, for example, deformed bar steel, and reinforcing bars such as D10 (diameter 10 mm) and D13 are applied, which is also necessary in relation to the predetermined pitch s. Etc.

  The first transverse muscle 3A is a hook substitute muscle that replaces the hook at the end of the first stirrup 1A. And since it is a hook alternative bar | burr, the 1st horizontal bar | burr 3A is firmly connected with welding with respect to the 1st rib bar | burr 1A. Although the first stirrup 1A does not have a hook at the end, the first stirrup 3A is firmly connected by welding, so the first stirrup 1A expected for the hook is good in the concrete. Secure fixability.

  On the other hand, the upper unit 20 has a U-shaped second open streak 2A which is not provided with a hook at the end and is arranged at a predetermined pitch s, and constitutes each second stirrup 2A. The vertical bars that are positioned above the end portion by a lap joint length L are connected to the inner side of the second stirrup 2A by the common second horizontal bars 4A, respectively, and maintain the unit posture shown in the figure. Yes. The upper unit 20 is further connected to a separate horizontal bar 5A, which is a hook substitute bar, by welding outside the end of each second stirrup bar 2A.

  In this way, the first lateral muscle 3A constituting the lower unit 10 is attached to the inside of the first stirrup 1A, and similarly, the second lateral muscle 4A constituting the upper unit 20 is also the second stirrup muscle. It is attached inside 2A. On the other hand, a separate transverse muscle 5A, which is a hook substitute muscle, is attached to the outside of the end of the second stirrup 2A.

  Both the lower unit 10 and the upper unit 20 shown in the figure are manufactured in advance at a factory or the like, transported to the site, and transferred to a predetermined installation location via a crane or the like. In the installation place, first, the lower unit 10 is placed at a predetermined position, and then, as shown in FIG. 1, the corresponding first stirrup 1A and second stirrup 2A are staggered in the Z direction. The upper unit 20 is dropped vertically downward (X1 direction) so as to be in contact with a difference.

  When the upper unit 20 is dropped, at the end of each second stirrup 2A that constitutes the upper unit 20, a separate lateral streak 5A that is a hook substitute is attached to the outside of the end of the second stirrup 2A. Therefore, the first transverse muscle 3A, which is a hook substitute muscle attached to the inner side of the end portion of each first stirrup 1A constituting the lower unit 10, and the separate transverse muscle 5A do not interfere with each other. . Then, when the upper unit 20 is dropped from the end of the second stirrup 2A by the lap joint length L, the first horizontal bar 3A and the second horizontal bar 4A constituting the lower unit 10 and the upper unit 20 are used. Are brought into contact with each other as shown in FIG. 2 to form a beam precursor 100 ′.

  Thus, the second lateral stripe 4A constituting the upper unit 20 is an alignment stripe for aligning the lower unit 10 and the upper unit 20, whereas the first lateral stripe 4A constituting the lower unit 10 is used. As described above, the transverse muscle 3A is a hook replacement muscle that replaces the hook at the end of the first stirrup 1A and is also an alignment muscle for aligning the lower unit 10 and the upper unit 20, and therefore This is a positioning and hook replacement muscle.

  Here, although not shown, before the upper unit 20 is dropped into the lower unit 10 in the state of FIG. 1, a predetermined number of main bars 6A and 6B (see FIG. 3) in advance inside the lower unit 10. It is better to line up. A deformed steel bar having a predetermined diameter is also applied to the main bars 6A and 6B, and the number and diameter thereof are set so as to satisfy a design bending moment, a design shearing force, and the like. As the main muscles 6A and 6B in the illustrated example, for example, three D19s can be applied.

  When the beam reinforcement precursor 100 ′ shown in FIG. 2 is formed in the field, as shown in FIG. 3, the upper main reinforcement 6A is arranged at an equal pitch on the upper inner side of the second delivery stripe 2A, and the second delivery rib 100A. The muscle 2A is bound and fixed with a binding wire or the like. In the same manner, the lower main muscle 6B is disposed at an equal pitch on the lower inner side of the first stirrup 1A, and is bound and fixed to the first stirrup 1A with a binding line or the like, thereby fixing the beam 100. Is configured.

  The beam reinforcement 100 shown in FIG. 3 can be promptly formed at the site with a length in the longitudinal direction (Z direction) of about 5 m. If it is desired to form beam bars having a longer extension, a plurality of beam bars 100 may be arranged in the longitudinal direction, and the main bars 6A and 6B of the beam bars 100 may be connected by lap joints using separate main bars.

  According to the illustrated beam reinforcement 100, since the lower unit 10 and the upper unit 20 manufactured in a factory or the like can be carried on-site and assembled quickly, excellent workability is achieved. In addition, in the form of assembling the units in which the beam bars are divided in the longitudinal direction instead of vertically split like the beam bars 100, it is necessary to connect the main bars to each other in a joint connection in connection with the connection between adjacent units. Since a separate main reinforcing bar is required for this lap joint and the amount of necessary reinforcing bars increases, the beam reinforcing bar 100 composed of the units 20 and 10 divided vertically is excellent in that the necessary reinforcing bar amount can be suppressed as much as possible. ing.

  Further, the first lateral muscle 3A and the second lateral muscle 4A are both connected to the inner side (same side) of both the stirrups 1A and 2A, and the first stirrup 1A is positioned at the end thereof. A first transverse muscle 3A, which is a muscle and hook substitute muscle, is attached, and a second transverse muscle 4A, which is an alignment muscle, is attached to the second stirrup muscle 2A from the end thereof to the inside by a lap joint length L. ing. With this configuration, the first lateral bar 3A and the second horizontal bar 4A can be brought into contact with each other for positioning, and a state in which the lap joint length L is automatically secured when the positioning is performed can be formed. Therefore, the trouble of connecting the plurality of stirrups 2A and 1A constituting the upper and lower units 20 and 10 while measuring the lap joint length L at the site can be saved, and further excellent workability can be enjoyed.

  In addition, as a modification of the beam reinforcement according to the first embodiment, a form in which FIGS. 1 to 3 are rotated by 180 degrees, that is, a form in which the lower unit 10 shown in FIG. 1 is an upper unit and an upper unit 20 is a lower unit. It may be.

(Embodiment 2 of beam reinforcement)
FIG. 4 is a perspective view illustrating a lower unit and an upper unit constituting Embodiment 2 of the beam of the present invention, and FIG. 5 is a state diagram in which the lower unit and the upper unit shown in FIG. 4 are assembled. FIG. 6 is a perspective view of the second embodiment of the beam.

  The illustrated lower unit 10A includes a first stirrup 1B provided with a hook 1Ba at one end and no hook at the other end. On the side provided with the hook 1Ba, a first horizontal bar 3B which is an alignment bar is attached at a position below the end portion by a lap joint length L. On the other hand, on the side not provided with the hook, a first lateral bar 3C, which is an alignment and hook substitute bar, is attached inside the end portion. Here, the hook 1Ba is oriented inside the first stirrup 1B, that is, in a direction orthogonal to the longitudinal direction (Z direction) of the beam.

  On the other hand, the upper unit 20A similarly includes a second stirrup 2B provided with a hook 2Ba at one end and no hook at the other end, as shown in FIG. The positions of both hooks 1Ba and 2Ba are different between the corresponding first stirrup 1B and second stirrup 2B. In the upper unit 20A, of the second stirrup 2B, on the side provided with the hook 2Ba, the second lateral streak 4C, which is a positioning streak, is attached at a position above the end joint by a lap joint length L. It has been. On the other hand, on the side not provided with the hook, the second lateral bar 4B, which is a positioning and hook substitute bar, is attached inside the end portion. Similarly, the hook 2Ba is oriented inside the second stirrup 2B, that is, in a direction orthogonal to the longitudinal direction (Z direction) of the beam.

  When assembling the upper unit 20A to the lower unit 10A, the first stirrup 1B and the second stirrup 2B are each provided with hooks 1Ba and 2Ba at one end thereof. When dropped into the hook, the hook 1Ba and the second horizontal bar 4B interfere, and the hook 2Ba and the first horizontal bar 3C interfere. Therefore, as shown in FIG. 4, by causing the upper unit 20A to enter the first stirrup 1B constituting the lower unit 10A from an oblique direction so that they do not interfere with each other, as shown in FIG. The horizontal bar 3B and the second horizontal bar 4B are brought into contact with each other and aligned, and similarly, the first horizontal bar 3C and the second horizontal bar 4C are brought into contact and aligned to form a beam bar precursor 100A ′.

  When the beam reinforcement precursor 100A ′ shown in FIG. 5 is formed on site, as shown in FIG. 6, the beam reinforcement 100A is configured by fixing the main reinforcements 6A and 6B on the upper and lower inner sides of the beam reinforcement precursor 100A ′. Is done.

  The first horizontal bars 3B and 3C and the second horizontal bars 4B and 4C can be brought into contact with each other and aligned with the beam bars 100A shown in the drawing, and the lap joint length L is automatically secured when the positions are aligned. Since the formed state can be formed, excellent workability is achieved. As can be seen from a comparison between FIG. 3 and FIG. 6, in the beam reinforcement 100A, the first stirrup 1B and the second stirrup 2B both have hooks 1Ba and 2Ba at one end thereof. In addition, since a portion corresponding to the separate reinforcing bar 5A which is a hook substitute bar shown in FIG. 3 is not necessary at the place where the hook is present, the amount of the reinforcing bar can be suppressed as compared with the beam bar 100.

(Embodiment 3 of beam reinforcement)
FIG. 7 is a perspective view illustrating the lower unit and the upper unit constituting Embodiment 3 of the beam of the present invention, and FIG. 8 is a state diagram in which the lower unit and the upper unit shown in FIG. 7 are assembled. FIG. 9 is a perspective view of the third embodiment of the beam.

  The illustrated lower unit 10B includes a first stirrup 1C having hooks 1Ca at two ends as a constituent element. The hook 1Ca is oriented in a direction along the longitudinal direction (Z direction) of the beam line, and is directed obliquely upward to the right (Y2 direction) in FIG. In addition, a first lateral bar 3D which is an alignment bar is attached at a position below L / 2 which is half the lap joint length from the end where the hook 1Ca is provided.

  On the other hand, the upper unit 20B similarly includes a second stirrup 2C having hooks 2Ca at two ends. The hooks 2Ca are oriented in the direction along the longitudinal direction (Z direction) of the beam line. However, in order to prevent the hooks 1Ca and 2Ca from interfering with each other when assembled with the lower unit 10B, the hooks 2Ca are diagonally left in FIG. It faces downward (Y3 direction), so both hooks 1Ca and 2Ca are oriented opposite to each other in the longitudinal direction of the beam (Z direction). In addition, a second lateral bar 4D as a positioning line is attached at a position above L / 2 which is half the lap joint length from the end where the hook 2Ca is provided.

  In assembling the lower unit 10B and the upper unit 20B, since the hooks 1Ca and 2Ca are oriented to the opposite sides in the longitudinal direction (Z direction) of the beam line, as shown in FIG. In the process of dropping the upper unit 20B vertically downward (in the X1 direction) so that the stirrup 1C and the second stirrup 2C are in contact with each other in the Z direction, the hook 1Ca, the lateral streak 4D, and the hook 2Ca And the horizontal stripes 3D do not interfere with each other.

  By dropping the upper unit 20B vertically downward, as shown in FIG. 8, the first horizontal stripe 3D and the second horizontal stripe 4D are brought into contact with each other and aligned to form the beam precursor 100B ′. . When the beam reinforcement precursor 100B ′ shown in FIG. 8 is formed in the field, as shown in FIG. 9, the beam reinforcement 100B is configured by fixing the main reinforcements 6A and 6B on the upper and lower sides of the beam reinforcement precursor 100B ′. Is done.

  Also with the beam reinforcement 100B shown in the figure, the first transverse stripe 3D and the second transverse stripe 4D can be brought into contact with each other for alignment, and the lap joint length L is automatically secured when this alignment is performed. Since it can be formed, excellent workability is achieved.

  Further, as can be seen from a comparison between FIG. 9 and FIG. 3, in the beam reinforcement 100B, the first stirrup 1C and the second stirrup 2C both have hooks 1Ca and 2Ca at both ends thereof. 3, which is equivalent to a separate reinforcing bar 5 </ b> A which is a hook substitute bar shown in FIG.

(Embodiment 4 of beam reinforcement)
FIG. 10 is a diagram for explaining a beam reinforcing bar according to a fourth embodiment of the present invention. FIG. 10 (a) is a schematic diagram for explaining a lower unit, an upper unit, and an intermediate unit constituting the beam reinforcing bar according to a fourth embodiment. FIG. 10B is a schematic diagram showing a state in which the lower unit, the intermediate unit, and the upper unit are assembled, and FIG. 10C is a schematic diagram of the fourth embodiment of the beam. 10 (a) and 10 (b) are front views. For example, when the upper unit 20C is taken up, a plurality of second stirrups 2D are arranged at predetermined pitch intervals on the back side of the drawing, and the horizontal streaks 4E, 5B is connected to each other.

  The beam reinforcement 100C according to the fourth embodiment is a beam reinforcement having a configuration in which the lower unit 10C and the upper unit 20C are connected by the intermediate unit 30C.

  In the lower unit 10 </ b> C, a first lateral muscle 3 </ b> E that is an alignment muscle and hook substitute muscle is attached to the inside of the end portion of the first rib 1 </ b> D. Further, in the upper unit 20C, a separate horizontal bar 5B as a hook alternative bar is attached outside the end of the second stirrup 2D, and further, the upper unit 20C is aligned to a position above the lap joint length L from the end. A second lateral muscle 4E, which is a useful muscle, is attached.

  On the other hand, the intermediate unit 30C includes left and right vertical bars 7A (there are a plurality of vertical bars 7A on the back side of the paper), and alignment and hook replacement bars attached to the upper end of the vertical bars 7A. A third horizontal bar 8A, a separate horizontal bar 5C which is a hook substitute bar attached to the outer side of the lower end of the vertical bar 7A, and an alignment bar at a position above the lower end by a lap joint length L. The third horizontal stripe 8B is attached to constitute the whole.

  There is no interfering member in the process of dropping the intermediate unit 30C vertically downward (X1 direction) with respect to the lower unit 10C and further dropping the upper unit 20C vertically downward (X1 direction) with respect to the intermediate unit 30C. Therefore, a beam streak precursor 100C ′ is quickly formed (FIG. 10B), and the main bars 6A and 6B are assembled to the upper inner side and the lower inner side to form the beam bar 100C (FIG. 10C). ).

  In the illustrated beam reinforcement 100C, when the first transverse stripe 3E and the third transverse stripe 8B are abutted and aligned, and when the third transverse stripe 8A and the second transverse stripe 4E are abutted and aligned, Since both can automatically form a state in which the lap joint length L is ensured, excellent workability is achieved. Further, in the beam reinforcements 100 to 100B, those basic structures are formed by assembling pieces obtained by dividing the discontinuous reinforcement in the vertical direction, and it is easy to form a beam reinforcement having a high beam, but in the beam reinforcement 100C. By providing the intermediate unit 30C, it is possible to form a beam streak with a higher beam.

  Note that the configuration of each unit constituting the beam reinforcing bar 100C shown in FIG. 10 is an example, and there are other forms in which FIG. 10 is rotated by 180 degrees. There are various modifications in which the arrangement form of the alignment muscles is changed.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

  1A, 1B, 1C, 1D... 1 stirrer muscle (sparus muscle), 2A, 2B, 2C, 2D... 3E: first transverse muscle (lateral muscle, alignment muscle / hook replacement muscle), 4B ... second lateral muscle (lateral muscle, alignment muscle / hook replacement muscle), 3B, 3D ... first lateral muscle (lateral muscle, position muscle) 4A, 4B, 4C, 4D, 4E ... second transverse muscle (lateral muscle, alignment muscle), 8A ... third transverse muscle (lateral muscle, alignment muscle / hook replacement muscle), 8B ... first Three transverse muscles (lateral muscles, alignment muscles), 5A, 5B, 5C ... separate transverse muscles (lateral muscles, hook substitute muscles), 6A, 6B ... main muscles, 7A ... longitudinal muscles, 10, 10A, 10B, 10C ... lower unit (Unit), 20, 20A, 20B, 20C ... upper unit (uni DOO), 100 ', 100A', 100B ', 100C' ... beam muscle precursor, 100,100A, 100B, 100C ... beams muscle, L ... lap joint length, s ... pitch, Z ... Beam muscle longitudinal

Claims (5)

A lower unit in which U-shaped first stirrups that are open upward are arranged at a predetermined pitch, and each first stirrup is connected to the first lateral streak;
An upper unit in which U-shaped second stirrups opened downward are arranged at a predetermined pitch, and each second stirrup is connected to the second transverse streaks,
Corresponding first stirrup and second stirrup are connected by wrapping at a predetermined lap joint length, and a main bar is connected to the inside of both stirrups,
Both the first lateral muscle and the second lateral muscle are connected to the same side of either the outer side or the inner side of both the stirrups,
Either one of the first transverse muscle and the second transverse muscle is attached to the end of the stirrup, and the other is attached to the inside of the end of the stirrup by the length of the lap joint,
A beam line in which the first horizontal line and the second horizontal line are in contact with each other and aligned. Neither the first stirrup or the second stirrup has a hook at the end,
The lateral muscles attached to the end of the stirrup are alignment muscles and hook replacement muscles,
The side of the stirrup is attached to the inner side of the stirrup, and another end of the stirrup is attached to the other side of the stirrup, which is an alternate hook hook. The beam reinforcement according to 1. Each of the first stirrup and the second stirrup has a hook at one end, and no hook at the other end,
On the side provided with a hook at the end, the lateral streak that is an alignment line is attached to the inside from the end by the length of the lap joint,
The beam reinforcement according to claim 1, wherein the lateral bars which are alignment bars and hook replacement bars are attached to the end part on a side not provided with a hook. A lower unit in which U-shaped first stirrups that are open upward are arranged at a predetermined pitch, and each first stirrup is connected to the first lateral streak;
An upper unit in which U-shaped second stirrups opened downward are arranged at a predetermined pitch, and each second stirrup is connected to the second transverse streaks,
Corresponding first stirrup and second stirrup are connected by wrapping at a predetermined lap joint length, and a main bar is connected to the inside of both stirrups,
Both the first lateral muscle and the second lateral muscle are connected to the same side of either the outer side or the inner side of both the stirrups,
The first stirrup and the second stirrup both have hooks at their ends, and both stirrups are both aligned inward from the end by the length of the lap joint. The transverse muscle that is a muscle is attached,
The hooks of both stirrups are oriented with respect to each other in the longitudinal direction of the beam streak,
A beam line in which the first horizontal line and the second horizontal line are in contact with each other and aligned. A lower unit in which U-shaped first stirrups that are open upward are arranged at a predetermined pitch, and each first stirrup is connected to the first lateral streak;
An upper unit in which U-shaped second stirrups opened downward are arranged at a predetermined pitch, and each second stirrup is connected to the second lateral streak;
Longitudinal stripes are arranged at a predetermined pitch, and each longitudinal stripe is connected to a third transverse stripe, arranged between the first stirrup and the second stirrup, and both of the stirrups. And an intermediate unit that connects
The corresponding first stirrup and the longitudinal streak, and the corresponding second stirrup and the longitudinal streak are both connected by wrapping at a predetermined lap joint length, and inside both the stirrups A beam that connects the main bars,
With respect to the first stirrup, the second stirrup and the longitudinal muscle, the first lateral muscle, the second lateral muscle and the third lateral muscle are all outside the lateral muscle or the longitudinal muscle. Are connected to the same side of either
The first transverse line and the second transverse line are attached to the inside of the end of the stirrup or the lap joint length from the end,
The third transverse bars attached to the longitudinal bars are the lap joints from the ends of the longitudinal bars when the corresponding first transverse bars and the second transverse bars are attached to the end parts. Attached to the end of the longitudinal bar when attached to the end of the longitudinal bar by the length of the lap joint. And
A beam line in which the first horizontal line and the third horizontal line, and the second horizontal line and the third horizontal line are in contact with each other and aligned.

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