JP4660405B2 - Concrete block connection structure - Google Patents

Description

The present invention relates to a coupling structure of Turkey down cleat blocks are interconnected via an in-place concrete section.

  Cast-in-place concrete is used for the bottom slab portion of relatively large concrete structures such as a water channel or passage having a rectangular or U-shaped cross section, a retaining wall, and a water storage tank.

  FIG. 1 shows an example of a water channel or passage employing cast-in-place concrete. Reference numeral 1 denotes a precast side wall block, and reference numeral 2 denotes a cast-in-place concrete part. The side wall block 1 has a predetermined width W and height H, and includes a bottom plate portion 1b at the lower end of the side plate portion 1a. The side wall blocks 1 are arranged so as to face each other with an interval in a direction orthogonal to the width direction, and a cast-in-place concrete portion 2 is formed between the opposed bottom plate portions 1b.

  As shown in FIG. 2, the side wall block 1 projects a part of the reinforcing reinforcing bar 3 from the end surface (contacted surface) 1 c of the bottom slab portion 1 b that contacts the cast-in-place concrete portion 2. Specifically, a plurality of reinforcing reinforcing bars 3 are provided in two rows in the vertical direction and spaced apart in the width direction. Each reinforcing reinforcing bar 3 is linear and part of the reinforcing reinforcing bars 3 protrudes from the contacted surface 1c and the remaining part is the side wall block 1. Buried. A considerable length is secured at the protruding portion of each reinforcing bar 3 in order to increase the accuracy of connection with the connecting bar 4 described later.

When constructing the concrete structure shown in FIG. 1, when the side wall block 1 is mutually coupled via the cast-in-place concrete portion 2, the side wall block 1 is set so that the contacted surfaces 1 c face each other as shown in FIG. 2. Place on surface RP. And as shown in FIG. 3, the both ends of the linear connection reinforcement 4 are piled up on each protrusion part of the opposing reinforcement bar 3 of the side wall block 1, and it connects by bundling or welding. Then, the cast-in-place concrete portion 2 is formed by placing concrete between the contact surfaces 1c of the side wall block 1 so that the protruding portions of the reinforcing reinforcing bars 3 and the connecting reinforcing bars 4 are embedded.
JP-A-4-293830 JP 2000-204643 A

  Since the protruding portion of the reinforcing bar 3 of the side wall block 1 has a considerable length, when the side wall block 1 is carried into the site, moved from the carry-in place to the destination place, and after the placement. When connecting the connecting reinforcing bars 4, the frequency at which the clothes of the worker are caught by the protruding ends of the reinforcing reinforcing bars 3 and the clothes are damaged, and the operator's limbs contact the protruding ends of the reinforcing reinforcing bars 3 and the operator There is a high frequency of injury. Naturally, when these clothes are damaged or injured, the work is temporarily interrupted, so that the original work is delayed.

The present invention is to provide a coupling structure of the one that is made in view of the circumstances, Turkey down cleat block can safely perform desired work by reducing the frequency resulting clothing damage or injury when working is there.

In order to achieve the above object, the present invention provides a concrete block in which a part of a reinforcing reinforcing bar protrudes from a contacted surface that comes into contact with a cast- in- place concrete part, and both ends overlap each other on the protruding part of the reinforcing reinforcing bar opposite to the concrete block. A combined structure of a concrete block comprising a connecting reinforcing bar connected together, and a cast-in-place concrete part formed between the contact surfaces of the concrete block so that the protruding portion of the reinforcing reinforcing bar and the connecting reinforcing bar are embedded, The reinforcing reinforcing bars are (A1) a lower straight portion, a substantially semicircular curved portion continuous with one end of the lower straight portion, and a length shorter than the lower straight portion, and continuous with one end of the curved portion. A first reinforcing bar having a shape having an upper straight part, and (A2) a linear second reinforcing bar having one end connected to the upper straight part of the first reinforcing bar. The reinforcing reinforcing bar protrudes from the contacted surface of the curved portion of the first reinforcing reinforcing bar, the lower straight portion and the upper straight portion near the curved portion, and the lower straight portion and the upper The remainder of the straight line portion and the second reinforcing bar are embedded in the concrete block, and the connecting rebar includes (A3) two substantially semicircular portions that are continuous with the lower straight line portion and both ends of the lower straight line portion, respectively. A first connecting reinforcing bar having a curved portion and two upper straight portions having a length shorter than the lower linear portion and continuing to one end of the two curved portions; and (A4) 2 of the first connecting reinforcing bars. A second linear reinforcing bar having a length capable of superimposing both ends thereof on one upper straight part, and the connecting reinforcing bar is opposed to each of both end parts of the first connecting reinforcing bar. It overlaps with each protruding part of 1 reinforcing bar Both are coupled Te, the both ends of the second connecting reinforcement is connected by overlapping each of the two upper straight portion of the first connecting reinforcement, and its features in that.

In the present invention, the concrete block in which a part of the reinforcing reinforcing bar protrudes from the contacted surface in contact with the cast-in-place concrete part and the protruding part of the reinforcing reinforcing bar opposite to each other are connected to each other by overlapping both ends. A connecting structure of a concrete block comprising a connecting reinforcing bar , and a cast-in-place concrete part formed between the contact surfaces of the concrete block so that the protruding part of the reinforcing reinforcing bar and the connecting reinforcing bar are embedded, wherein the reinforcing reinforcing bar is: (B1) a lower straight portion, a substantially semicircular curved portion that is continuous with one end of the lower straight portion, and an upper straight portion that is shorter than the lower straight portion and continuous with one end of the curved portion. A first reinforcing reinforcing bar having a shape, (B2) an upper straight portion, a substantially semicircular curved portion continuous with one end of the upper straight portion, and a length shorter than the upper straight portion. It is composed of a second reinforcing bar having a shape having one end of a curved part and a continuous lower straight part, and the first reinforcing bar and the second reinforcing bar are used in pairs, The reinforcing reinforcing bar protrudes from the contacted surface part of the curved portion of the first reinforcing reinforcing bar, the lower straight portion near the curved portion, and the upper straight portion, and the rest of the lower straight portion and the upper straight portion Embedded in the concrete block, the curved portion of the second reinforcing reinforcing bar and the upper straight portion and the lower straight portion in the vicinity of the curved portion protrude from the contacted surface, and the upper straight portion and the lower straight portion Are embedded in the concrete block, and the connecting rebar includes (B3) a lower straight portion, two substantially semicircular curved portions continuous to both ends of the lower straight portion, and a lower straight portion. Shorter than the two bends A first connecting reinforcing bar having two upper straight portions that are continuous with one end of the upper straight portion, (B4) an upper straight portion, two substantially semicircular curved portions that are continuous with both ends of the upper straight portion, A second connecting reinforcing bar having a shape shorter than the straight part and having two lower straight parts that are continuous with one end of the two curved parts, the connecting reinforcing bar being a first connecting reinforcing bar Both end portions of the second reinforcing bars are overlapped and connected to the protruding portions of the first reinforcing reinforcing bars, and both end portions of the second connecting reinforcing bars are overlapped to the protruding portions of the opposing second reinforcing reinforcing bars. It is characterized by being connected .

According to prior Symbol both inventions (bond structure of the concrete block) used as the curved portion as reinforcing rebar protrudes from the block, because of the use of those having a curved portion at each end as a connection reinforcement, load the block in the field When laying or placing the block from the loading location to the destination, or when connecting the connecting rebar after placing the block, the clothes of the operator get caught on the protruding part of the reinforcing rebar, causing damage to the clothing In addition to reducing the frequency, and the frequency of the operator's limbs coming into contact with the protruding portions of the reinforcing reinforcing bars and causing injury to the operator, and when connecting the connecting reinforcing bars after placing the block, both ends of the connecting reinforcing bars It is possible to reduce the frequency at which the clothes of the worker are caught and the clothes are damaged, and the frequency at which the workers' hands and feet are in contact with both ends of the connecting reinforcing bars and the operator is injured.

That is, according to both the inventions (concrete block connecting structure) , it is possible to safely perform the intended work by reducing the frequency of clothes breakage or injury during the work.

According to the present invention, by reducing the frequency resulting clothing damage or injury can provide a binding structure of the intended Turkey down cleat block can safely perform the work when working.

  The above object and other objects, structural features, and operational effects of the present invention will become apparent from the following description and the accompanying drawings.

[First Embodiment]
4 to 8 show a first embodiment in which the present invention is applied to a side wall block for a water channel or a passage.

  First, the structure of the precast side wall block 11 will be described with reference to FIG. 4A is a partially broken perspective view of the side wall block, and FIG. 4B is a partial longitudinal sectional view of FIG.

  The side wall block 11 has a predetermined width W and height H, and includes a bottom plate portion 11b at the lower end of the side plate portion 11a. The side wall block 11 protrudes a part of the reinforcing reinforcing bar 12 from an end surface (contacted surface) 11c of the bottom slab portion 11b that contacts the cast-in-place concrete portion (see reference numeral 16 in FIG. 8).

  Specifically, a plurality of reinforcing reinforcing bars 12 are provided at intervals in the width direction. Each reinforcing bar 12 has a shape having a substantially semicircular curved portion 12a and two upper and lower straight portions 12b continuous with the curved portion 12a. The portion protrudes from the contacted surface 11 c and the remaining portions of the two linear portions 12 b are embedded in the side wall block 11. The length of the lower straight portion 12b of the reinforcing reinforcing bar 12 is longer than the length of the upper straight portion 12b. The side wall block 11 is embedded with a second linear reinforcing bar 13, and one end of the second reinforcing bar 13 is overlapped with the end of the straight portion 12 b above the reinforcing bar 12 and bound. Alternatively, they are connected by welding.

  Next, with reference to FIGS. 5 to 8, the procedure for joining the side wall blocks 11 shown in FIG. 4 will be described with the joining structure.

  When the side wall block 11 is mutually coupled via a cast-in-place concrete part (see reference numeral 16 in FIG. 8), the side wall block 11 is mounted on the reference plane RP so that the contacted surfaces 11c face each other as shown in FIG. Put.

  Then, as shown in FIG. 6, both ends of the connecting reinforcing bars 14 shown in FIG. 6 are respectively provided on the protruding portions of the reinforcing reinforcing bars 12 on the side wall block 11 (the curved portions 12a and a part of the two straight portions 12b in the vicinity of the curved portions 12a). The parts are overlapped and connected by bundling or welding. The connecting rebar 14 has a shape having a substantially semicircular curved portion 14a at both ends and two upper and lower straight portions 14b, 14c continuous with the curved portions 14a, and the lower straight portion 14b is a curved portion at both ends. The upper straight portion 14c has a predetermined length inward from the curved portions 14a at both ends.

  As can be seen from FIG. 6, the overlapping of the connecting reinforcing bars 14 is performed in such a manner that a part of the two straight portions 14 b and 14 c in the vicinity of the curved portion 14 a of the connecting reinforcing bar 14 is replaced with 2 in the vicinity of the curved portion 12 a of the reinforcing reinforcing bar 12 of the side wall block 11. This is performed by superimposing a part of the two linear portions 12b. Further, the connecting reinforcing bar 14 is connected to a part of the two straight portions 14 b and 14 c in the vicinity of the curved portion 14 a of the connecting reinforcing bar 14 and a part of the two straight portions 12 b in the vicinity of the curved portion 12 a of the reinforcing reinforcing bar 12 of the side wall block 11. It is carried out by bundling or welding the overlapping portions.

  Then, as shown in FIG. 7, both ends of the linear second connecting reinforcing bar 15 shown in the figure are overlapped with each of the upper linear portions 14 c of the connecting reinforcing bar 14 and connected by binding or welding.

  Then, as shown in FIG. 8, the cast-in-place concrete portion is formed by placing concrete between the contacted surfaces 11 c of the side wall block 11 so that the protruding portions of the reinforcing reinforcing bars 12, the connecting reinforcing bars 14, and the second connecting reinforcing bars 15 are embedded. 16 is formed.

  According to the above-described side wall block 11, a shape having a curved portion 12 a and two straight portions 12 b continuous with the curved portion 12 a is adopted as the reinforcing bar 12 of the side wall block 11. 12a and a part of the two straight portions 12b in the vicinity of the curved portion 12a are protruded from the contacted surface 11c, so that when the side wall block 11 is carried into the site or moved from the loading location to the destination location and placed. When the connecting rebar 14 or the like is connected after placement, the frequency at which the clothes of the worker are caught by the protruding ends of the reinforcing reinforcing bars 12 and the clothes are damaged can be reduced. It is possible to reduce the frequency at which the operator is injured due to contact with each other.

  Moreover, according to the coupling structure of the side wall block 11 described above, a shape having a curved portion 14a at both ends and two straight portions 14b and 14c continuous with each curved portion 14a is adopted as the connecting reinforcing bar 14. Therefore, when connecting the connecting reinforcing bars 14 after the side wall block 11 is placed, the clothes of the worker are caught on both ends of the connecting reinforcing bars 14 and the clothes are damaged, and the hands and feet of the workers are connected to both ends of the connecting reinforcing bars 14. It is possible to reduce the frequency of contact and injury to the operator.

  That is, according to the above-described side wall block 11 and its coupling structure, the expected work can be performed safely by reducing the frequency of clothes breakage or injury during the work.

  Further, according to the side wall block 11 described above, the curved portion 12a of the reinforcing reinforcing bar 12 and a part of the two straight portions 12b in the vicinity of the curved portion 12a protrude from the contacted surface 11c, and a similar curved portion 14a is formed on the protruding portion. Since the end portions of the connecting reinforcing bars 14 are overlapped and connected, the connection with the connecting reinforcing bars 14 can be performed accurately even if the length of the protruding portion of the reinforcing reinforcing bars 12 is shortened. In other words, since the length of the protruding portion of the reinforcing reinforcing bar 12 can be shortened, the material cost related to the reinforcing reinforcing bar 12 can be reduced. It is possible to perform the intended work more safely by reducing the frequency of occurrence of breakage and injury.

  Furthermore, according to the coupling structure of the side wall block 11 described above, a part of the two straight portions 14b and 14c in the vicinity of the curved portion 14a of the connecting reinforcing bar 14 and two straight lines in the vicinity of the curved portion 12a of the reinforcing reinforcing bar 12 of the side wall block 11 are provided. Since the overlapping portions with a part of the portion 12b are respectively connected, it is possible to reliably obtain a force (load resistance) that opposes the external force acting mainly on the lower surface side of the cast-in-place concrete portion 16 after construction. In addition, since the second reinforcing bar 13 is provided on the side wall block reinforcing bar 12 and both end portions of the second connecting bar 15 are overlapped and connected to the respective straight portions 14 c on the upper side of the connecting bar 14, A force (load bearing force) that opposes the external force acting mainly on the upper surface side of the cast-in-place concrete portion 16 can be reliably obtained.

  The thicknesses of the reinforcing reinforcing bars 12, the second reinforcing reinforcing bars 13, the connecting reinforcing bars 14, and the second connecting reinforcing bars 15 are external forces acting on the cast-in-place concrete part 16 and the bottom plate part 11b of the side wall block 11 after construction. It is appropriately selected depending on. For example, when the external force acting on the lower surface side and the upper surface side of the cast-in-place concrete portion 16 and the bottom slab portion 11b of the side wall block 11 are different from each other, the thickness corresponding to the external force acting on the lower surface side is the reinforcing steel bar 12 and the connecting reinforcing bars 14 are used for the second reinforcing reinforcing bars 13 and the second connecting reinforcing bars 15 having different thicknesses according to the external force acting on the upper surface side.

In the first embodiment shown in FIGS. 4-8, there is shown the concatenation by overlapping both end portions of the second coupling reinforcing bars 15 in each upper linear portion 14c of the connection reinforcing bars 14 as the coupling structure 9, the one having a length longer than that of the second connecting reinforcing bar 15 is used as the second connecting reinforcing bar 15 ′, and the end of the second connecting reinforcing bar 15 ′ is located above the connecting reinforcing bar 14. The straight line portion 14 c and the straight line portion 12 b on the upper side of the reinforcing reinforcing bar 12 may be overlapped and connected by binding or welding.

In the first embodiment shown in FIGS. 4-8, showed that the projecting portion of the reinforcing rebar 12 and the connection reinforcing bars 14 and the second connecting reinforcement 15 embedded in place concrete section 16 as the coupling structure As shown in FIG. 10, a plurality of force distribution bars 17 are arranged and connected in a direction intersecting with the protruding portion of the reinforcing reinforcing bar 12, the connecting reinforcing bar 14, and the second connecting reinforcing bar 15, and these are cast in place concrete part 16. You may embed it together.

Further, in the first embodiment shown in FIGS. 4 to 8, the present invention is applied to the side wall block 11 for a water channel or a passage, but is used for other concrete structures such as a retaining wall and a water tank. Even if the present invention is applied to a concrete block to be produced, that is, if it is a concrete block that is mutually coupled via a cast-in-place concrete part, the present invention can be applied as appropriate to obtain the same effect as described above.

[Second Embodiment]
FIGS. 11-15 shows 2nd Embodiment which applied this invention to the side wall block for waterways or a channel | path.

  First, the structure of the side wall block 21 will be described with reference to FIG. FIG. 11A is a partially broken perspective view of a side wall block, and FIGS. 11B and 11C are partial longitudinal sectional views of FIG. 11A.

  The side wall block 21 has a predetermined width W and height, and includes a bottom plate portion 21b at the lower end of the side plate portion 21a. The side wall block 21 protrudes part of the reinforcing bars 22 and 23 from the end surface (contacted surface) 21c of the bottom slab portion 21b that contacts the cast-in-place concrete portion (see reference numeral 26 in FIG. 15).

  Specifically, the reinforcing reinforcing bars 22 and 23 are used in pairs, and a plurality of sets are provided at intervals in the width direction. As shown in FIG. 11B, one reinforcing reinforcing bar 22 forming each set has a shape having a substantially semicircular curved portion 22a and two upper and lower straight portions 22b continuous with the curved portion 22a. A part of the two straight parts 22b in the vicinity of the part 22a and the curved part 22a protrudes from the contacted surface 21c, and the remaining part of the two straight parts 22b is embedded in the side wall block 21. The length of the lower straight portion 22b of the reinforcing reinforcing bar 22 is longer than the length of the upper straight portion 22b. Further, as shown in FIG. 11C, the other reinforcing reinforcing bar 23 forming each set has a shape having a substantially semicircular curved portion 23a and two upper and lower straight portions 23b continuous with the curved portion 23a. The curved portion 23a and a part of the two straight portions 23b in the vicinity of the curved portion 23a protrude from the contacted surface 21c, and the remaining portions of the two straight portions 23b are embedded in the side wall block 21. The length of the lower straight portion 23b of the reinforcing reinforcing bar 23 is shorter than the length of the upper straight portion 23b. Here, the reinforcing reinforcing bar 23 uses the reinforcing reinforcing bar 22 described above upside down.

  Next, the procedure for joining the side wall blocks 21 shown in FIG. 11 will be described with reference to FIGS.

  When the side wall blocks 21 are connected to each other via a cast-in-place concrete portion (see reference numeral 26 in FIG. 15), the side wall blocks 21 are brought into contact with each other as shown in FIGS. 12 (A) and 12 (B). Are placed on the reference plane RP so as to face each other.

  And as shown to FIG. 13 (A), it shows to the protrusion part (a part of two linear part 22b of the curved part 22a and the curved part 22a vicinity) of one reinforcement reinforcing bar 22 which the side wall block 11 opposes, respectively. The both ends of the connecting rebar 24 are overlapped and connected by binding or welding. The connecting reinforcing bar 24 has a shape having a substantially semicircular curved portion 24a at both ends and two upper and lower straight portions 24b, 24c continuous with the curved portions 24a, and the lower straight portion 24b is a curved portion at both ends. The upper straight portion 24c has a predetermined length inward from the curved portions 24a at both ends.

  As can be seen from FIG. 13A, the overlapping of the connecting reinforcing bars 24 is performed by bending a part of the two straight portions 24 b and 24 c in the vicinity of the bending portion 24 a of the connecting reinforcing bar 24 with the bending of one reinforcing reinforcing bar 22 of the side wall block 21. This is performed by superimposing a part of two straight portions 22b in the vicinity of the portion 22a. The overlapping position of the connecting reinforcing bars 24 is outside the protruding portion of the reinforcing reinforcing bars 22 as shown in FIG. Further, the connecting reinforcing bar 24 is connected to a part of the two straight parts 24 b and 24 c in the vicinity of the curved part 24 a of the connecting reinforcing bar 24 and a part of the two straight parts 22 b in the vicinity of the curved part 22 a of the reinforcing reinforcing bar 22 of the side wall block 21. It is carried out by bundling or welding the overlapping portions.

  Further, as shown in FIG. 13B, each of the protruding portions (the curved portion 23a and a part of the two straight portions 23b in the vicinity of the curved portion 23a) of the other reinforcing reinforcing bar 23 of the side wall block 11 is shown in FIG. The both ends of the connecting reinforcing bars 25 are overlapped and connected by binding or welding. The connecting reinforcing bar 25 has a shape having a substantially semicircular curved portion 25a at both ends and two upper and lower straight portions 25b, 25c continuous with the curved portions 25a, and the upper straight portion 25b has a curved portion 25a at both ends. The lower straight portion 25c has a predetermined length inward from the curved portions 25a at both ends. Here, the connecting reinforcing bar 25 uses the connecting reinforcing bar 24 described above upside down.

  As can be seen from FIG. 13B, the overlapping of the connecting reinforcing bars 25 is performed by bending a part of the two straight portions 25 b and 25 c in the vicinity of the bending portion 25 a of the connecting reinforcing bars 25 with the other reinforcing reinforcing bar 23 of the side wall block 21. This is performed by superimposing a part of two straight portions 23b in the vicinity of the portion 23a. The overlapping position of the connecting reinforcing bars 25 is outside the protruding portion of the reinforcing reinforcing bars 23 as shown in FIG. Further, the connecting reinforcing bar 24 is connected to a part of the two straight parts 24 b and 24 c in the vicinity of the curved part 24 a of the connecting reinforcing bar 24 and a part of the two straight parts 22 b in the vicinity of the curved part 22 a of the reinforcing reinforcing bar 22 of the side wall block 21. It is carried out by bundling or welding the overlapping portions.

  Then, as shown in FIG. 15, the cast-in-place concrete portion 26 is formed by placing concrete between the contacted surfaces 21 c of the side wall block 21 so that the protruding portions of the reinforcing reinforcing bars 22 and 23 and the connecting reinforcing bars 24 and 25 are embedded. To do.

  According to the side wall block 21 described above, the reinforcing bars 22 and 23 of the side wall block 21 have shapes having curved portions 22a and 23a and two straight portions 22b and 23b continuous with the curved portions 22a and 23a. The curved portions 22a and 23a of the reinforcing reinforcing bars 22 and 23 and a part of the two straight portions 22b and 23b in the vicinity of the curved portions 22a and 23a are protruded from the contacted surface 21c. When carrying in, moving from the carry-in location to the destination location, and placing the connecting rebars 24, 25 after placement, the clothes of the operator are caught on the protruding ends of the reinforcing rebars 22, 23 and the clothes are damaged. In addition, the frequency at which the operator's limbs or the like come into contact with the protruding ends of the reinforcing reinforcing bars 22 and 23 and the operator is injured can be reduced.

  Moreover, according to the coupling structure of the side wall block 21 described above, the connecting rebars 24, 25 are curved portions 24a, 25a at both ends, and two straight portions 24b, 24c, 25b, 25c that are continuous with the curved portions 24a, 25a. When the connecting rebars 24 and 25 are connected after the side wall block 21 is placed, the clothes of the operator are caught on both ends of the connecting rebars 24 and 25 and the clothes are damaged. In addition, the frequency with which the operator's limbs and the like come into contact with both ends of the connecting reinforcing bars 24 and 25 and the operator is injured can be reduced.

  That is, according to the above-described side wall block 21 and its coupling structure, the expected work can be performed safely by reducing the frequency of clothes breakage or injury during the work.

  Further, according to the side wall block 21 described above, the curved portions 22a and 23a of the reinforcing reinforcing bars 22 and 23 and a part of the two straight portions 22b and 23b in the vicinity of the curved portions 22a and 23a protrude from the contacted surface 21c, and the protrusion Since the end portions of the connecting reinforcing bars 24 and 25 having the same curved portions 24a and 25a are overlapped and connected to each other, the connecting reinforcing bars 24 are connected even if the lengths of the protruding portions of the reinforcing reinforcing bars 22 and 23 are shortened. , 25 can be accurately performed. In other words, since the length of the protruding portions of the reinforcing reinforcing bars 22 and 23 can be shortened, the material cost related to the reinforcing reinforcing bars 22 and 23 can be reduced, and the length of the protruding portions of the reinforcing reinforcing bars 22 and 23 can be shortened. By doing so, the frequency at which clothes are damaged or injured during work can be reduced, and the intended work can be performed more safely.

  Furthermore, according to the coupling structure of the side wall block 21 described above, a part of the two straight portions 24b, 24c, 25b, 25c in the vicinity of the curved portions 24a, 25a of the connecting rebars 24, 25 and the reinforcing bars 22, Since the overlapping portions of the two straight portions 22b and 23b in the vicinity of the curved portions 22a and 23a are connected to each other, the external force acting mainly on the lower surface side of the cast-in-place concrete portion 26 after construction is counteracted. Force (load bearing force) and a force (load bearing force) that opposes the external force acting mainly on the upper surface side can be obtained with certainty.

  The thicknesses of the reinforcing reinforcing bars 22 and 23 and the connecting reinforcing bars 24 and 25 are appropriately selected according to the external force acting on the cast-in-place concrete part 26 and the bottom slab part 21b of the side wall block 21 after construction. For example, when the external force acting on the lower surface side and the upper surface side of the cast-in-place concrete portion 26 and the bottom slab portion 21b of the side wall block 21 are different from each other, the thickness corresponding to the external force acting on the lower surface side is the reinforcing steel bar The reinforcing bars 23 and the connecting reinforcing bars 24 are of different thicknesses depending on the external force acting on the upper surface side.

  In addition, in 2nd Embodiment shown in FIGS. 11-15, the edge part of one connection reinforcing bar 24 is piled up on the outer side of the protrusion part of one reinforcement reinforcing bar 22, and the edge part of the other connection reinforcing bar 25 is made into the other side. Although the superposition on the outside of the protruding portion of the reinforcing reinforcing bar 23 is shown as a coupling structure, the end of one connecting reinforcing bar 24 is overlapped on the inside of the protruding portion of one reinforcing reinforcing bar 22 as shown in FIG. You may overlap the edge part of the other connection reinforcing bar 25 inside the protrusion part of the other reinforcement reinforcing bar 23. FIG. Of course, the end of one connecting reinforcing bar 24 may be overlapped with the outside of the protruding portion of one reinforcing reinforcing bar 22, and the end of the other connecting reinforcing bar 25 may be overlapped with the inside of the protruding portion of the other reinforcing reinforcing bar 23. .

  Moreover, in 2nd Embodiment shown in FIGS. 11-15, although what embed | buried the reinforcement part 22 and 23 and the connection reinforcement 24 and 25 in the cast-in-place concrete part 26 was shown as a connection structure, FIG. As shown in FIG. 2, a plurality of force distribution bars 27 are arranged and connected in a direction intersecting with the protruding portions of the reinforcing reinforcing bars 22 and 23 and the connecting reinforcing bars 24 and 25, respectively, and these are embedded in the cast-in-place concrete part 26. Also good.

  Furthermore, in 2nd Embodiment shown in FIGS. 11-15, although what applied this invention to the side wall block 21 for waterways or a passage was shown, it uses for other concrete structures, such as a retaining wall and a water tank. Even if the present invention is applied to a concrete block to be produced, that is, if it is a concrete block that is mutually coupled via a cast-in-place concrete part, the present invention can be applied as appropriate to obtain the same effect as described above.

It is a partially broken perspective view of the concrete structure which shows a prior art example. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is the partially broken perspective view of the side wall block which concerns on 1st Embodiment of this invention, and its partial longitudinal cross-sectional view. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a fragmentary longitudinal cross-section which shows the modification of 1st Embodiment. It is a fragmentary longitudinal cross-section which shows the other modification of 1st Embodiment. It is the partially broken perspective view of the side wall block which concerns on 2nd Embodiment of this invention, and its partial longitudinal cross-sectional view. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a figure which shows the coupling | bonding procedure of the side wall block shown in FIG. It is a partial top view which shows the modification of 2nd Embodiment. It is a fragmentary longitudinal cross-section which shows the other modification of 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Side wall block, 11c ... Contact surface, 12 ... Reinforcement reinforcing bar, 12a ... Curved part, 12b ... Straight part, 14 ... Connection reinforcing bar, 14a ... Curved part, 14b ... Straight part, 14c ... Straight part, 16 ... Cast in place Concrete part, 21 ... side wall block, 21c ... contacted surface, 22 ... reinforcing steel bar, 22a ... curved part, 22b ... straight part, 23 ... reinforcing steel bar, 23a ... curved part, 23b ... straight part, 24 ... connecting reinforcing bar, 24a ... curved portion, 24b ... straight portion, 24c ... straight portion, 25 ... connecting reinforcing bar, 25a ... curved portion, 25b ... straight portion, 25c ... straight portion, 26 ... cast-in-place concrete portion.

Claims (2)

A concrete block in which a part of the reinforcing bar protrudes from the contacted surface that contacts the cast-in-place concrete part, a connecting reinforcing bar that is connected to each other by overlapping both ends of the protruding part of the opposing reinforcing bar of the concrete block, and the reinforcing bar And a cast-in-place concrete part formed between the contacted surfaces of the concrete block so that the projecting part and the connecting reinforcing bar are embedded,
The reinforcing reinforcing bars are (A1) a lower straight portion, a substantially semicircular curved portion continuous with one end of the lower straight portion, and a length shorter than the lower straight portion, and continuous with one end of the curved portion. A first reinforcing bar having a shape having an upper straight part, and (A2) a linear second reinforcing bar having one end connected to the upper straight part of the first reinforcing bar,
The reinforcing reinforcing bar protrudes from the contacted surface part of the curved portion of the first reinforcing reinforcing bar, the lower straight portion and the upper straight portion near the curved portion, and the rest of the lower straight portion and the upper straight portion. The second reinforcing bar is embedded in the concrete block,
The connecting rebar includes (A3) a lower straight portion, two substantially semicircular curved portions that are continuous with both ends of the lower straight portion, and the two curved portions that are shorter in length than the lower straight portion. A first connecting rebar having a shape having two upper straight portions that are continuous with one end of the first connecting rebar, and (A4) a straight shape having a length capable of overlapping both ends of the two upper straight portions of the first connecting rebar. Of the second connecting reinforcing bar,
The connecting reinforcing bars are connected so that both ends of the first connecting reinforcing bars are overlapped with the protruding portions of the first reinforcing reinforcing bars, and both ends of the second connecting reinforcing bars are connected to the first connecting reinforcing bars. Are overlapped and connected to each of the two upper straight portions of
A concrete block connection structure characterized by that. A concrete block in which a part of the reinforcing bar protrudes from the contacted surface that contacts the cast-in-place concrete part, a connecting reinforcing bar that is connected to each other by overlapping both ends of the protruding part of the opposing reinforcing bar of the concrete block, and the reinforcing bar And a cast-in-place concrete part formed between the contacted surfaces of the concrete block so that the projecting part and the connecting reinforcing bar are embedded,
The reinforcing reinforcing bars are (B1) a lower straight portion, a substantially semicircular curved portion continuous with one end of the lower straight portion, and a length shorter than the lower straight portion and continuous with one end of the curved portion. A first reinforcing reinforcing bar having an upper straight portion; (B2) an upper straight portion; a substantially semicircular curved portion continuous with one end of the upper straight portion; and a shorter length than the upper straight portion. It is composed of a second reinforcing bar having a shape having one end of a curved part and a continuous lower straight part, and the first reinforcing bar and the second reinforcing bar are used in pairs,
The reinforcing reinforcing bar protrudes from the contacted surface part of the curved portion of the first reinforcing reinforcing bar, the lower straight portion near the curved portion, and the upper straight portion, and the rest of the lower straight portion and the upper straight portion Embedded in the concrete block, the curved portion of the second reinforcing reinforcing bar and the upper straight portion and the lower straight portion in the vicinity of the curved portion protrude from the contacted surface, and the upper straight portion and the lower straight portion The rest of is buried in a concrete block,
The connecting rebar includes (B3) a lower straight portion, two substantially semicircular curved portions that are continuous with both ends of the lower straight portion, and the two curved portions that are shorter in length than the lower straight portion. A first connecting reinforcing bar having two upper straight portions that are continuous with one end of the upper straight portion, (B4) an upper straight portion, two substantially semicircular curved portions that are continuous with both ends of the upper straight portion, A second connecting reinforcing bar having a shape shorter than the straight portion and having two lower straight portions continuous with one end of the two curved portions;
The connecting reinforcing bars are connected to each other in such a manner that both ends of the first connecting reinforcing bars are overlapped with the protruding portions of the first reinforcing reinforcing bars, and second ends of the second connecting reinforcing bars are opposed to each other. Overlapped and connected to each protruding part of the reinforcing bar,
A concrete block connection structure characterized by that.

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