Partition member for concrete construction joint, and construction method of partition member for concrete construction joint

Abstract

To provide a configuration that can make the packing style of a partition member compact.SOLUTION: A partition member for concrete construction joints comprises: a partition board made of precast concrete that is placed, in the case of a concrete structure member extending in one direction, between a concrete part in one side and a concrete part in the other side along one direction in which the casting is performed in different timings; and pipe members that are at least partially buried in the partition board and open to one direction and to the other direction of the partition board, and into which reinforcement bars can be inserted.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a partition member for concrete jointing and a construction method of the partition member for concrete jointing.

Background Art

[0002] The construction device for a concrete structure described in Patent Document 1 divides a concrete driving space into a plurality of parts in the lateral direction, allows concrete to be driven for each divided driving space, and constructs a concrete structure that is laterally continuous by connecting the contact surfaces of the concrete driven for each driving space. The construction device includes a vertical formwork installed at intervals on the front and back surfaces of the driving space, vertical and horizontal reinforcing bars arranged with a spacing therebetween, and an embedded member installed on the vertical contact surface of laterally adjacent driving spaces. The embedded member has a closing plate and a connecting bar inserted and attached to the closing plate. The closing plate is configured as a plate-shaped member having a substantially rectangular shape to close the vertical contact surface of the driving space, and both surface portions are configured as rough surfaces. The connecting bar and the horizontal reinforcing bar are configured to be connectable. Concrete is driven into laterally adjacent driving spaces, and the adjacent concretes are integrated via the embedded member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the placement of concrete is not completed at once, or when it is desired to change the specifications of the concrete, etc., in some cases, concrete may be placed later in a continuous manner on the previously placed and already hardened concrete to divide the concrete.

[0005] Conventionally, for the part where concrete is placed separately, a partition member in which reinforcing bars are pre-embedded in a concrete partition board has been used. However, when the reinforcing bars are pre-embedded in the partition board in this way, the loading shape of the partition member becomes large when transporting the partition member from the manufacturing site where the partition member is manufactured to the construction site where the partition member is constructed.

[0006] An object of the present disclosure is to obtain a configuration capable of making the loading shape of the partition member compact.

Means for Solving the Problems

[0007] The partition member for concrete joint according to the first aspect is a precast concrete partition board disposed between a concrete part on one side in the one direction and a concrete part on the other side in the one direction, which are placed at different timings, in a concrete structural member extending in one direction, and a pipe member at least partially embedded in the partition board, opening on one side and the other side of the partition board and allowing reinforcing bars to be inserted.

[0008] According to the above aspect, a part of the pipe member into which the reinforcing bar can be inserted is embedded in the partition board. Thereby, compared with the case where the reinforcing bar is embedded in the partition board, the loading shape of the partition member can be made compact.

[0009] The partition member for concrete joint according to the second aspect is the partition member for concrete joint according to the first aspect, wherein the pipe member protrudes to one side and the other side of the partition board, injection holes into which grout can be injected are formed on the circumferential surface of the pipe member at the part protruding from the partition board, and the reinforcing bar can be inserted from one side and the other side of the pipe member.

[0010] According to the above aspect, injection holes into which grout can be injected are formed on the circumferential surface of the pipe member at the part protruding from the partition board. Thereby, by inserting the reinforcing bar into the pipe member and injecting the grout from the injection holes, the reinforcing bar can be fixed to the partition member.

[0011] The partition member for concrete joint according to the third aspect is the partition member for concrete joint described in the first aspect, wherein a female screw is formed on the inner peripheral surface of the pipe member, and the reinforcing bar having a male screw formed on the outer peripheral surface is screwed into the female screw formed on the inner peripheral surface of the pipe member and inserted into the pipe member.

[0012] According to the above aspect, the reinforcing bar can be attached to the partition member by screwing it into the pipe member without using grout.

[0013] The partition member for concrete joint according to the fourth aspect is the partition member for concrete joint described in any one of the first to third aspects, wherein a roughened portion roughened in a wave shape is formed on one plate surface of the partition plate, and a concave cotter portion is formed on the other plate surface of the partition plate.

[0014] According to the above aspect, the biting of the partition plate into the previously placed concrete and the subsequently placed concrete can be improved.

[0015] The construction method of the partition member for concrete joint according to the fifth aspect is a method for constructing a partition member for concrete joint provided with a precast concrete partition plate disposed between a concrete portion on one side in one direction and a concrete portion on the other side in one direction, which are placed at different timings, in a concrete structural member extending in one direction, and a pipe member at least partially embedded in the partition plate, opening on one side and the other side of the partition plate and allowing insertion of a reinforcing bar, the method comprising: a step of disposing the partition member at the construction position of the partition member; and a step of inserting the reinforcing bar into the pipe member of the partition member disposed at the construction position.

[0016] According to the above aspect, the partition member for concrete joint is disposed at the construction position, and the reinforcing bar is inserted into the pipe member of the partition member disposed at the construction position. Thereby, the partition member can be easily disposed at the construction position.

[0017] A construction method for a partition member for concrete jointing according to the sixth aspect is a method for constructing a partition member for concrete jointing provided with a precast concrete partition plate disposed between a concrete part on one side in a certain direction and a concrete part on the other side in the certain direction, which are cast at different timings, in a concrete structural member extending in one direction, and a pipe member at least partially embedded, having openings on one side and the other side of the partition plate and allowing insertion of reinforcing bars. The method includes a step of inserting the reinforcing bars into the pipe member of the partition member at a position different from the construction position where the partition member is to be constructed, and a step of disposing the partition member with the reinforcing bars inserted into the pipe member at the construction position.

[0018] According to the above aspect, the reinforcing bars are inserted into the pipe member of the partition member at a position different from the construction position of the partition member for concrete jointing, and the partition member with the reinforcing bars inserted into the pipe member is disposed at the construction position. Thereby, the main reinforcing bars joined to the reinforcing bars do not become an obstacle, and the reinforcing bars can be inserted into the pipe member.

Effect of the Invention

[0019] According to the present disclosure, a configuration capable of making the loading posture of the partition member compact can be obtained.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Mode for Carrying Out the Invention

[0021] <First Embodiment> An example of the partition member for concrete joint pouring and the construction method of the partition member for concrete joint pouring according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. The arrow H shown in each figure is in the vertical direction and indicates the vertical direction. The arrow W shown in each figure is orthogonal to the arrow H and is in the horizontal direction. The arrow D shown in each figure is orthogonal to the arrows H and W and is in the horizontal direction.

[0022] This partition member for concrete joint pouring is used to pour concrete later continuously against the previously poured and already hardened concrete part when the pouring of concrete is not completed at one time or when it is desired to change the concrete specifications.

[0023] (Overall Structure) The partition member 10 for concrete joints (hereinafter simply referred to as "partition member 10") includes, as shown in FIGS. 1 and 2, a partition plate 12 made of precast concrete and slim sleeve pipes 20 penetrating through the four corner portions of the partition plate 12. The slim sleeve pipe 20 is an example of a pipe member.

[0024] 〔Partition plate 12〕 As shown in FIGS. 1 and 2, the partition plate 12 is rectangular when viewed from the plate thickness direction, and a front surface 12a and a back surface 12b are formed on the partition plate 12. The front surface 12a is an example of one side plate surface, and the back surface 12b is an example of the other side plate surface.

[0025] As shown in FIG. 1, a roughened portion 14 roughened in a wave shape is formed on the front surface 12a of the partition plate 12. The roughened portion 14 is a so-called roughening for concrete, and is a portion where fine streaks are formed by using a broom or a brush on the surface before the concrete hardens. In FIG. 1, it is shown that the roughened portion 14 is formed partially, but the roughened portion 14 is formed over the entire front surface 12a of the partition plate 12. Here, the roughened portion 14 is a portion where a plurality of grooves with a depth of 2 mm or more are formed at intervals.

[0026] Further, as shown in FIG. 2, two concave cotter portions 16 are formed side by side in the vertical direction on the back surface 12b of the partition plate 12. The cotter portion 16 is rectangular and extends in the depth direction when viewed from the width direction (plate thickness direction).

[0027] 〔Slim sleeve pipe 20〕 The slim sleeve pipe 20 is a tubular long member into which a reinforcing bar can be inserted. As shown in FIGS. 1 and 2, an injection hole 20a for injecting grout and a discharge hole 20b for discharging the injected grout are formed on the circumferential surface of the slim sleeve pipe 20. Specifically, the injection hole 20a is formed so that the upper part opens at one end side in the longitudinal direction on the circumferential surface of the slim sleeve pipe 20, and the discharge hole 20b is formed so that the upper part opens at the other end side in the longitudinal direction on the circumferential surface of the slim sleeve pipe 20. And the central part in the longitudinal direction of the slim sleeve pipe 20 is embedded in the partition plate 12.

[0028] [Construction method of partition member for concrete joint] Next, as an example, the construction method of the partition member 10 will be described for the case of placing concrete to form a beam extending in the width direction. The beam extending in the width direction is an example of a concrete structural member extending in one direction.

[0029] First, at a construction site, at an assembly position different from the construction position where the partition member 10 is to be constructed, as shown in FIG. 3, reinforcing bars 40 are inserted into the respective slim sleeve pipes 20 of the partition member 10. That is, in this step, the reinforcing bars 40 are inserted into the slim sleeve pipes 20 at a position different from the construction position where the partition member 10 is to be constructed.

[0030] Furthermore, with a beam formwork (not shown) installed, as shown in FIG. 4, the partition member 10 is arranged between the main reinforcing bars 46 that form a beam formed between a pair of columns 44. Specifically, the partition member 10 is arranged so that the reinforcing bars 40 inserted into the slim sleeve pipes 20 of the partition member 10 face each other in the width direction between the main reinforcing bar 46a extending from one column 44a and the main reinforcing bar 46b extending from the other column 44b. Note that in FIG. 4, stirrups, formwork, etc. are omitted.

[0031] Next, as shown in FIG. 4, sleeve pipes 42 are installed so as to straddle the end of the main reinforcing bar 46a and one end of the reinforcing bar 40, and further, sleeve pipes 42 are installed so as to straddle the end of the main reinforcing bar 46b and the other end of the reinforcing bar 40.

[0032] Next, as shown in FIG. 5, grout is injected from the injection holes 20a of each slim sleeve pipe 20. Specifically, grout is injected into the injection hole 20a until grout is discharged from the discharge hole 20b. Note that a seal member (reference numeral omitted) for suppressing leakage of grout between the reinforcing bar 40 and the slim sleeve pipe 20 is provided.

[0033] Next, as shown in FIG. 6, grout is injected from the injection holes 42a of each sleeve pipe 42. Specifically, grout is injected into the injection hole 42a until grout is discharged from the discharge hole 42b. Note that a seal member (reference numeral omitted) for suppressing leakage of grout between the reinforcing bars 40 and 46 and the sleeve pipe 42 is provided.

[0034] Next, concrete is placed in the portion between the column 44a and the partition plate 12, and after this concrete portion has hardened, other concrete is placed in the portion between the column 44b and the partition plate 12.

[0035] In this way, the partition member 10 is constructed, and a beam is formed between the pair of columns 44.

[0036] 〔Form for manufacturing the partition plate 12〕 As shown in FIG. 7(A), a form 48 for manufacturing the partition plate 12 includes a frame portion 48a and a bottom portion 48b. The bottom portion 48b is provided with a convex portion 48c for forming the cotter portion 16 (see FIG. 2) and a cylindrical portion 48d for attaching the slim sleeve pipe 20.

[0037] When concrete is poured into this form 48, as shown in FIG. 7(B), a flat surface with a flattened upper surface is formed. By roughening this flat surface, a roughened portion 14 (see FIG. 1) is formed.

[0038] (Summary) As described above, in the partition member 10, the central portion in the longitudinal direction of the slim sleeve tube 20 into which the reinforcing bar 40 can be inserted is embedded in the partition plate 12. Thereby, compared with the case where the reinforcing bar is embedded in the partition plate, the loading posture of the partition member 10 can be made compact.

[0039] Further, in the partition member 10, injection holes 20a into which grout can be injected are formed on the peripheral surface of the slim sleeve tube 20 of the portion protruding from the partition plate 12. Thereby, by inserting the reinforcing bar 40 into the slim sleeve tube 20 and injecting grout from the injection holes 20a, the reinforcing bar 40 can be fixed to the slim sleeve tube 20.

[0040] Further, in the partition member 10, a roughened portion 14 roughened in a wave shape is formed on the surface 12a of the partition plate 12, and a concave cotter portion 16 is formed on the back surface 12b of the partition plate 12. Thereby, the biting of the partition plate 12 into the previously placed concrete and the subsequently placed concrete can be improved.

[0041] Further, in the construction method of the partition member for concrete joint, the reinforcing bars 40 are respectively inserted into the respective slim sleeve tubes 20 of the partition member 10 at an assembly position different from the construction position where the partition member 10 is constructed. Further, the partition member 10 is arranged at the construction position with the reinforcing bars 40 inserted. Thereby, the reinforcing bars 40 can be inserted into the slim sleeve tubes 20 without the main reinforcing bars to which the reinforcing bars are joined becoming an obstacle.

[0042] <Second Embodiment> Next, an example of the partition member for concrete joint according to the second embodiment and the construction method of the partition member for concrete joint will be described with reference to FIGS. 8 and 9. Note that, for the second embodiment, the different parts from the first embodiment will be mainly described.

[0043] The partition member 110 for concrete jointing according to the second embodiment (hereinafter simply referred to as "partition member 110") includes a partition plate 112 made of precast concrete and a coupler 120 passing through the four corner portions of the partition plate 112, as shown in FIG. 8(A). The coupler 120 is an example of a pipe member.

[0044] The coupler 120 is cylindrical, and the entire coupler 120 is embedded in the partition plate 112. Further, female threads are formed on the inner peripheral surface of the coupler 120. Furthermore, male threads are formed on the outer peripheral surface of a reinforcing bar 140 inserted into the coupler 120. Then, as shown in FIGS. 8(B) and 9, by screwing the reinforcing bar 140 into the coupler 120, the reinforcing bar 140 is inserted into the coupler 120 and the reinforcing bar 140 is attached to the partition member 110.

[0045] In this way, in the partition member 110, the reinforcing bar 140 can be attached to the partition member 110 without using grout.

[0046] <Third Embodiment> Next, an example of a partition member for concrete jointing according to the third embodiment and a construction method of the partition member for concrete jointing will be described with reference to FIGS. 10 and 11. Note that for the third embodiment, differences from the first embodiment will be mainly described.

[0047] The partition member 210 for concrete jointing according to the third embodiment (hereinafter simply referred to as "partition member 210") includes a partition plate 212 made of precast concrete and a sheath pipe 220 passing through the four corner portions of the partition plate 212, as shown in FIG. 10. The sheath pipe 220 is an example of a pipe member.

[0048] The sheath pipe 220 is cylindrical, has a larger diameter than the slim sleeve pipe 20 according to the first embodiment, and the entire sheath pipe 220 is embedded in the partition plate 112.

[0049] And, as shown in FIG. 11, a gap is formed between the sheath pipe 220 and the reinforcing bar 40, and this gap is filled with grout.

[0050] Although the present disclosure has been described in detail with respect to specific embodiments, it is obvious to those skilled in the art that the present disclosure is not limited to such embodiments and that various other embodiments can be adopted within the scope of the present disclosure. For example, the reinforcing bars 40 and 140 are inserted into the pipe members (slim sleeve pipe 20, coupler 120, sheath pipe 220) of the partition members 10, 110, and 210 at positions different from the construction positions where the partition members 10, 110, and 210 are constructed, and then the partition members 10, 110, and 210 are arranged at the construction positions. However, the partition members may be arranged at the construction positions, and then the reinforcing bars 40 and 140 may be inserted into the pipe members (slim sleeve pipe 20, coupler 120, sheath pipe 220) of the partition members. Thereby, the partition members can be easily arranged at the construction positions.

[0051] In the above embodiment, four pipe members (slim sleeve pipe 20, coupler 120, sheath pipe 220) are embedded in the partition plates 12, 112, and 212. However, the number of pipe members may be four or less or four or more.

[0052] In the above embodiment, although not particularly described, the beam in which the concrete is placed may be a foundation beam or the like.

[0053] In the first embodiment above, one reinforcing bar 40 is inserted into the slim sleeve pipe 20. However, reinforcing bars may be inserted from one side and the other side of the slim sleeve pipe 20, respectively, and a pair of reinforcing bars may be butted against each other inside the slim sleeve pipe 20.

Description of Reference Numerals

[0054] 10 Partition member 12 Partition plate 12a Surface (an example of one side plate surface) 12b Back surface (an example of the other side plate surface) 14 Rough part 16 Cutter part 20 Slim sleeve tube (an example of a pipe member) 20a Injection hole 20b Discharge hole 40 Rebar 110 Partition member 112 Partition plate 120 Coupler (an example of a pipe member) 140 Rebar 210 Partition member 212 Partition plate 220 Sheath tube (an example of a pipe member)

Claims

1. In a structural member made of concrete extending in one direction, a precast concrete partition plate is disposed between a concrete portion on one side in the one direction and a concrete portion on the other side in the one direction that are poured at different times; A pipe member at least partially embedded in the partition plate, opening on one side and the other side of the partition plate and allowing a reinforcing bar to be inserted therein; A partition member for concrete joints.

2. The pipe member protrudes to one side and the other side of the partition plate, and an injection hole into which grout can be injected is formed on the peripheral surface of the pipe member at the portion protruding from the partition plate, and the reinforcing bar can be inserted from one side and the other side of the pipe member. A partition member for concrete joints according to claim 1.

3. A female thread is formed on the inner peripheral surface of the pipe member, and the reinforcing bar having a male thread formed on the outer peripheral surface is inserted into the pipe member by being screwed into the female thread formed on the inner peripheral surface of the pipe member. A partition member for concrete joints according to claim 1.

4. A roughened portion is formed on one plate surface of the partition plate, the roughened portion being roughened in a wavy shape, A concave cotter portion is formed on the other plate surface of the partition plate. The partition member for concrete joints according to any one of claims 1 to 3.

5. A method for constructing a partition member for concrete joints, comprising: a precast concrete partition plate disposed between a concrete portion on one side in one direction and a concrete portion on the other side in the one direction that are poured at different times in a concrete structural member extending in one direction; and a pipe member at least partially embedded in the partition plate, opening on one side and the other side of the partition plate and allowing a reinforcing bar to be inserted, A step of placing the partition member at a construction position of the partition member; A step of inserting the reinforcing bar into the pipe member of the partition member arranged at the installation position; A method for constructing a partition member for concrete joints comprising the steps of:

6. A method for constructing a partition member for concrete joints, comprising: a precast concrete partition plate disposed between a concrete portion on one side of a concrete structural member extending in one direction and a concrete portion on the other side of the one direction that are poured at different times; and a pipe member that is at least partially embedded, has openings on one side and the other side of the partition plate, and allows a reinforcing bar to be inserted therein; inserting the reinforcing bar into the pipe member of the partition member at a position different from a construction position where the partition member is constructed; A step of placing the partition member with the reinforcing bar inserted into the pipe member at the installation position; A method for constructing a partition member for concrete joints comprising the steps of:

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