JP4982222B2 - Concrete parts - Google Patents

Description

The present invention relates to a concrete member which can be filled with grout into the sleeve joint without leaving foreign material in the concrete member.

  In recent years, in order to shorten the construction period, a method of constructing an RC column beam structure using a precast concrete (hereinafter referred to as PC) member is used. When an RC column beam structure is constructed using such a construction method, a sleeve joint is provided at the upper end of the column main bar of the lower PC column member, and the column main bar of the upper PC column member is projected from the lower surface. After installing the upper PC column member so that the reinforcing bars of the upper PC column member are inserted into the sleeve joint of the lower PC column member, the joints between the PC column members and the sleeve joint are installed. A method of connecting PC pillar members by injecting grout and hardening the grout is used.

As described above, when connecting the PC column members, grout is injected into the sleeve joint so that one end is exposed on the surface of the PC column member and the other end is connected to the grout inlet of the sleeve joint. A system pipe is provided, and a grout is filled into the sleeve joint through this pipe. (For example, see Patent Document 1)
JP-A-7-279315

  However, such a PVC pipe for injecting grout is buried in the concrete, so it cannot be removed even after injecting grout and remains in the reinforced concrete member. And since the strength of the PVC pipe is lower than that of the concrete, if the PVC pipe is left in the concrete, the structural performance of the reinforced concrete member may be deteriorated. In particular, as the number of reinforcing bars increases, the number of sleeve joints increases as the number of reinforcing bars increases, so that the number of pipes for grout injection also increases, and there is a concern that the structural performance may be further deteriorated.

The present invention has been made in view of the above problems, and an object, without leaving foreign objects into the reinforced concrete member, is to provide a reinforced concrete member which can be filled with grout sleeve joint.

The concrete member of the present invention is a concrete member provided with a sleeve joint or a sheath tube having a grout pouring / discharging port, and communicates with the grout pouring / discharging port of the sleeve joint or sheath tube, and has an opening on the surface of the concrete member. Provided , the sleeve joint or sheath tube is arranged so as to be arranged in a plurality of rows, the pouring passage is formed corresponding to each row of the plurality of sleeve joints or sheath tubes, Each of the injection / discharge passages has a side portion communicating with the grout injection / discharge ports of the plurality of sleeve joints or sheath tubes arranged in a row corresponding to the injection / discharge passage .
According to the present invention , since no foreign matter remains in the concrete member, it is possible to prevent a decrease in strength of the concrete member. In addition, a concrete member here contains a reinforced concrete member, a steel frame concrete member, and a steel frame reinforced concrete member.

Here, the concrete member may be a PC column member, and the sleeve joint or the sheath tube may be embedded in a column head of the PC column member in a vertical direction .
The concrete member may be a PC beam member, and the sleeve joint or the sheath tube may be embedded in the beam end portion of the PC beam member in the axial direction of the PC beam member .

  According to the present invention, since a PVC pipe for grout filling does not remain in the concrete member, it is possible to prevent a decrease in strength of the concrete member without causing a cross-sectional defect.

Hereinafter, one embodiment of a grout filling method of a sleeve joint in a concrete member of the present invention is described based on a drawing.
In this embodiment, the case where the main bars of the PC member are connected using the sleeve joint will be described. However, the present invention is not limited to this, and the present invention is also applicable to the case where the main bars of the reinforced concrete member are connected to each other by the sleeve joint. Can do.

  FIG. 1 shows a PC column member 10 to which the grout filling method of the present embodiment is applied, in which (A) is a horizontal sectional view and (B) is a vertical sectional view. As shown in the figure, the PC column member 10 includes a column main bar 12 embedded in the PC column member 10 and a sleeve joint 13 provided at the upper end of the column main bar 12 so as to be exposed on the upper surface of the PC column member 10. With.

  Further, the PC column member 10 is provided with a plurality of cylindrical holes (hereinafter referred to as injection passages) 20 extending in the vertical and horizontal directions in FIG. 1A in a plane substantially perpendicular to the member axis. ing. At least one end of each injection passage 20 is open to the surface of the PC column member 10. In addition, the injection passage 20 extending in the vertical direction and the injection passage 20 extending in the horizontal direction communicate with each other at a crossing portion. Each sleeve joint 13 is connected to one of the injection passages 20 at the grout inlet 14.

Such an injection passage 20 can be formed as described below, for example.
In the step of constructing the PC column member 10, the hose member is fixed at a position corresponding to the injection passage 20 before placing the concrete of the PC column member 10. As such a hose member, for example, GAP GURD (trade name) manufactured by Toyo Sangyo Co., Ltd. can be used. This hose member can be expanded and contracted in the radial direction by adjusting the internal air pressure, and is composed of an airtight material so that gas does not leak into the concrete when the concrete is placed later. Is. The hose member is fixed to the column main reinforcement 12 and the sleeve joint 13 which have already been arranged using a wire or the like so as not to move at the time of concrete placing described later.

  As shown in FIG. 2, the connecting portion between the grout inlet 14 of the sleeve joint 13 and the hose member 21 may be held using, for example, a fixing member 22. The fixing member 22 is a cylindrical member having an opening on a side surface, and is fixed to the sleeve joint 13 with the grout inlet 14 of the sleeve joint 13 being inserted into the opening. When the diameter of the hose member 21 is increased by enclosing the gas in the hose member 21, the hose member 21 is restrained by the fixing member 22, so that the surface of the hose member 21 comes into close contact with the grout inlet 14 of the sleeve joint 13. A gap is closed between 21 and the grout inlet 14, and the poured concrete can be prevented from flowing into the grout inlet 14.

The method of fixing the hose member 21 to the grout inlet 14 of the sleeve joint 13 is not limited to the above, and for example, a cylindrical shape fitted into the grout inlet 14 as shown in FIGS. The fixing member 25 in which the member 25a and the cylindrical member 25b into which the hose member 21 is fitted may be used in a T shape, or the grout inlet 14 may be fitted with the hose member 21 as shown in FIG. If the grout inlet 14 and the hose member 21 are fitted together, they may be fixed using a binding wire or the like, and if the hose member 21 and the grout inlet 14 can be held in close contact with each other. Good.
Further, the portion where the vertical and horizontal hose members 21 intersect is fixed with a binding wire or the like so that the hose members 21 are in close contact with each other with the gas sealed in the hose member 21.

  Further, when a plurality of sleeve joints 13 are arranged in a line in any direction as shown in FIG. 1A, a single hose member 21 is fixed to the grout inlets 14 of the sleeve joints 13 in one line. May be. In this way, the hose members 21 are arranged so that the grout inlets 14 of all the sleeve joints 13 are fixed to any of the hose members 21.

  Next, gas is sealed in all the hose members 21 using a pump or the like. At this time, the internal atmospheric pressure is increased to such an extent that it does not deform even when subjected to concrete pressure during concrete placement described later. After the gas is sealed in the hose member 21, concrete is placed.

After the cast concrete has hardened, the gas enclosed in the hose member 21 is removed. As a result, the hose member 21 contracts in the radial direction, and a gap is generated between the hose member 21 and the inner surface of the hole formed in the concrete constituting the PC column member 10. It can be easily taken out from the opening. A hole having a shape corresponding to the hose member 21 remains in the portion from which the hose member 21 is removed. This hole is the injection passage 20 described above, and the PC column member 10 having the injection passage 20 is formed by the above steps.
Moreover, the method of providing the inflow passage in the reinforced concrete member is not limited to the method using the hose member as described above.

5A and 5B are views showing a rod-shaped member 80 used to form the inflow passage, FIG. 5A is a perspective view, and FIG. 5B is a cross-sectional view. The rod-shaped member 80 is a member formed of, for example, polyethylene formed in a columnar shape, and is embedded in a small-diameter hole 82 extending in the axial direction and an end portion of the small-diameter hole 82 as shown in FIG. A nut 81. Such a rod-shaped member 80 is provided with a small-diameter hole 82 using a drill having a smaller diameter than one surface of a member formed in a columnar shape, and a large-diameter hole 83 is formed using a larger-diameter drill than the other surface. The nut 81 can be fitted into the large-diameter hole 83 and the inlet of the large-diameter hole 83 can be closed by a member 84 such as polyethylene.
If such a rod-shaped member 80 is used, an injection passage can be formed in the concrete member as follows.

  First, before placing the concrete, as shown in FIG. 6, the rod-shaped member 80 is inserted at one end into the grout inlet 14 of the sleeve joint 13 and the other end reaches the formwork at the time of placing the concrete. Arrange to do. At this time, when the end surface of the rod-shaped member 80 cannot be brought into close contact with the surface of the mold, a trumpet-shaped cap 83 made of rubber or plastic as shown in FIG. 7 may be used. As a result, as shown in FIG. 8, one end of the cap 83 is brought into close contact with the formwork, and the rod-shaped member 80 is inserted into the opening at the other end, so that the concrete placed in the formwork becomes a hole of the rod-shaped member 80. Can be prevented. Thus, it is not necessary to provide a hole in the mold by arranging the rod-shaped member 80 so that the end portion thereof substantially coincides with the surface of the concrete member. However, a hole may be provided in the mold, and the rod-shaped member 80 may be provided so as to protrude.

  As described above, after the rod-shaped member 80 is disposed, concrete is placed. After the cast concrete has hardened, as shown in FIG. 9, the rotating portion of the drill 84 having the rotating portion provided with the thread at the tip is inserted from the opening of the rod-shaped member 80, and the thread of the nut 81 and the screw are screwed. Combine. Furthermore, by rotating the rotating part of the drill 84, the nut 81 advances toward the outside of the concrete member. Thereby, the rod-shaped member 80 can be pulled out by pulling out the rod-shaped member 80 until the end surface protrudes from the concrete member. A hole formed by removing the rod-shaped member 80 can be used as an injection passage.

  Further, the present invention is not limited to this, and a grout injection passage can also be formed using a PVC pipe 101 formed in a tapered shape that gradually increases in diameter in the axial direction as shown in FIG. . When a grout injection passage is formed using such a PVC pipe 101, the end of the PVC pipe 101 having a smaller diameter is connected to the sleeve joint 13 before placing the concrete, as in the above method. It is inserted into the grout inlet 14 and is arranged so that the end portion on the larger diameter side comes into contact with the formwork at the time of placing concrete.

After placing the PVC pipe 101 in this way, concrete is placed. After the cast concrete has hardened, as shown in FIG. 10 (B), a grooving jig 102 having a thread formed on the surface is inserted while being rotated inside the PVC pipe 101. Thereby, a thread can be formed on the inner peripheral surface of the PVC pipe 101. Then, the groove cutting jig 102 is pulled out in a state where the threads on the surface of the groove cutting jig 102 and the threads on the inner peripheral surface of the PVC pipe 101 are screwed together. Thereby, since the thread of the PVC pipe 101 is pulled out in a state where it is caught by the thread on the surface of the grooving jig 102, the PVC pipe 101 can be easily pulled out.
In the above description, the PVC pipe 101 is used. However, the present invention is not limited to this, and any metal cylindrical member capable of forming a thread using a resin other than PVC or the jig 102 can be used. In addition, although the PVC pipe 101 is formed into a tapered shape, it is easy to pull out, but a cylindrical member having a constant diameter may be used when it is easily pulled out without being formed into a tapered shape.

  Note that, as a jig for removing the PVC pipe 101, for example, a jig 121 having a mechanism in which the sharp tip 121B spreads outward by grasping the handle 121A as shown in FIG. Good. By inserting such a jig 121 into the PVC pipe 101 and gripping the handle 121A, the tip 121B is pushed against the inner peripheral surface of the PVC pipe 101, and the tip 121B is engaged with the inner peripheral surface of the PVC pipe 101. The PVC pipe 101 can be removed by pulling the jig 121 in the combined state.

  Further, the jig for pulling out the PVC pipe 101 is not limited to the jig for pulling out the PVC pipe 101 by engaging a part of the jig with the inner peripheral surface of the PVC pipe 101 as described above. A jig for pulling out the tube 101 may be used. As such a jig, as shown in FIG. 12, a jig in which the friction member 131B attached to the tip spreads outward by gripping the handle portion 131A can be used. When the jig 131 is used, after the concrete is hardened, the jig 131 is inserted into the PVC pipe 101 and the handle 131A is gripped to bring the friction member 131B into close contact with the inner peripheral surface of the PVC pipe 101. When the jig 131 is pulled out in this state, a frictional force acts on the inner peripheral surface of the PVC pipe 101 by the friction member 131B, and the PVC pipe 101 can be removed.

Furthermore, the present invention is not limited to this. For example, as shown in FIG. 13 (A), the PVC pipe 101 can be easily removed after the concrete has hardened when the PVC pipe 101 is disposed at a position corresponding to the injection passage. A disk 110 (corresponding to an engaging member in claims) 110 having a substantially same diameter as the outer peripheral surface of 101 and provided with a rectangular opening 110A in the center is formed as shown in FIG. It may be arranged so as to abut against the end surface opposite to the surface of the concrete member and to engage with the protruding portion 14A of the grout inlet 14 of the mechanical joint 13.
As a result, after the placed concrete is cured, a drawing jig 112 having a T-shaped tip as shown in FIG. 13C is inserted into the opening 110A of the disk 110 and rotated about 90 degrees. The PVC pipe 101 can be easily removed by engaging the T-shaped portion with the back side of the disk 110 and pulling out the drawing jig 112. In addition, the member arrange | positioned on the opposite side to the concrete member surface of the PVC pipe 101 in this way is not restricted to the disk 110, What is necessary is just a member which contacts the end surface of the PVC pipe 101. Further, such a disk 110 may be formed integrally with the PVC pipe 101. In such a case, the disk 110 can be disposed inside the PVC pipe 101 or at the end of the concrete member surface side. is there. By disposing the disk 110 as described above, the placed concrete can be prevented from entering the inside from the end portion on the surface side of the PVC pipe 101.

In addition, as shown in FIG. 14, before placing concrete, a PVC pipe 141 with an oblique cut from one end to the other end is inserted into the grout inlet of the mechanical joint, and after the concrete is hardened, The injection passage may be formed by removing the PVC pipe 141 by utilizing the fact that the inner diameter of the PVC pipe 141 is reduced by pulling a part of the PVC pipe 141.
In addition, in the method of removing these PVC pipes, it is good to use what was formed in the taper shape as a PVC pipe similarly to the PVC pipe 101 of the said embodiment. Thereby, a PVC pipe can be easily removed from a concrete member. Moreover, it is good to arrange | position so that the edge part of a PVC pipe may correspond with the surface of a concrete member. Thereby, a PVC pipe can be installed without providing a hole in a formwork. In this case, since the PVC pipe does not protrude from the concrete surface, the outside of the PVC pipe cannot be grasped and pulled out, but as described above, it can be removed from the concrete member by pulling out with a jig or the like.
In the above method, the polyvinyl chloride pipe is arranged at a position corresponding to the injection passage. However, the present invention is not limited to this, and a cylindrical member such as metal or resin can be used.

Hereinafter, a grout filling method using the PC column member 10 in which the injection passage 20 is formed as described above will be described.
First, as shown in FIG. 15B, the main reinforcing bar 18 is inserted from the upper part of the sleeve joint 13.
Next, any one of the openings 15 of the plurality of injection passages 20 is used as the injection port 16, and when one of the other openings is filled with grout, the outlet 17 for air and surplus grout. The opening 15 other than the inlet 16 and the outlet 17 is closed with an appropriate member. In the present embodiment, any one of the openings 15 of the plurality of injection passages 20 is used as the injection port 16 and any one of the other openings is used as the outflow port 17. When air can be extracted from the mouth or the like, the outlet 17 can be omitted.

  Next, the grout 19 is press-fitted into the injection passage 20 from the injection port 16. Since all the injection passages 20 are in communication, the injected grout 19 flows into all the injection passages 20. Further, the grout 19 flowing into the injection passage 20 flows into the sleeve joint 13 from the grout injection port 14. Thus, by continuing the press injection of the grout from the injection port 16, the grout 19 can be filled in all the sleeve joints 13 as shown in FIG.

  And the grout 19 with which the sleeve joint 13 and the injection | pouring channel | path 20 were filled hardens | cures, and a joint structure is formed. At this time, both the grout 19 filled in the injection passage 20 and the concrete constituting the PC column member 10 are inorganic (cement-based) materials, and thus are hardened together. For this reason, there is no possibility of reducing the strength of the PC column member 10.

  As described above, according to the grout filling method of the present embodiment, the grout 19 is injected using the injection passage 20 provided in the PC column member 10, so that no foreign matter remains in the PC column member 10. The strength as a structure is not impaired.

  In the above-described embodiment, the case where the column main bars 12 are embedded in the vicinity of the outer periphery of the PC column member 10 has been described. However, as shown below, the grout filling method of the present invention is an object of application. Is not limited to this.

  FIG. 17A is a view showing the arrangement of the injection passage 20 in the case where the column main reinforcing bars 12 are doubly embedded in the vicinity of the outer periphery of the PC column member 10, and FIG. It is a figure which shows arrangement | positioning of the injection | pouring channel | path 20 when the column main reinforcement 12 is embed | buried near the outer periphery of the member 10 and center vicinity. As shown in FIG. 17A, when the column main bars 12 are double buried near the outer periphery of the PC column member 10, it passes between the inner column main bars 12 and the outer column main bars 12. The injection passage 20 may be disposed in the inlet passage 20 and the grout inlet 14 of the sleeve joint 13 may be connected to both sides of the injection passage 20. In addition, as shown in FIG. 17B, when the column main reinforcement 12 is embedded near the center of the PC column member 10, the injection passage 20 may be provided so as to pass near the center of the PC column member 10. . As described above, by appropriately arranging the injection passage 20 according to the arrangement of the column main reinforcement 12 and the sleeve joint 13, it is possible to cope with any arrangement of the column main reinforcement 12 and the corresponding sleeve joint 13. .

  In the case where the progress of filling of the grout 19 of each sleeve joint 13 is greatly different, the grout 19 flows out from the upper part of the sleeve joint 13 filled with the grout 19 first, and the grout 19 that has flowed out flows into the other sleeve joint 13. There is a risk that air will enter the grout 19 in the sleeve joint 13 from the upper part of the sleeve.

If there is such a possibility, the injection passage 20 may be arranged so that the difference in the route from the grout inlet to each sleeve joint becomes small.
FIG. 18 is a view showing an example of the PC column member 10 in which the injection passage is arranged so that the difference in the path from the grout inlet to each sleeve joint is small, (A) is a horizontal sectional view, and (B) is a horizontal sectional view. It is a vertical sectional view. As shown in the figure, apart from the injection passage 20A connected to the sleeve joint 13 near the outer periphery of the member, the PC column member 10 is provided with a grout inlet 23 at the center of the member. An injection passage 20B extending toward the outer periphery is connected, and these injection passages 20B are connected to an injection passage 20A connected to the sleeve joint 13.

  Thus, by providing the grout inlet 23 at the center of the member and providing the injection passage 20B so as to extend toward the outer periphery, the difference in path length from the grout inlet 23 to each sleeve joint 13 is reduced. For this reason, the grout 19 press-fitted from the grout inlet 23 reaches each sleeve joint 13 substantially simultaneously, and the pressure of the grout 19 in each sleeve joint 13 becomes substantially equal. Grout 19 can be filled. Thereby, it is possible to prevent the grout that has flowed out from the upper part of the sleeve joint 13 from flowing into the upper part of the other sleeve joint 13 and air being mixed into the grout 19.

  Moreover, in the above-mentioned embodiment, although it was set as the structure which all the injection | pouring passages 20 connect, this invention is not limited to this. For example, as shown in FIGS. 19A and 19B, a plurality of injection passages 20 may be provided. When a plurality of injection passages 20 are provided in this way, a grout inlet 16 is provided for each injection passage 20 and a grout is press-fitted from each of the grout inlets 16 so that all sleeve joints 13 are filled with grout. can do.

Further, in the above description, the case where the grout filling method of the present invention is applied to the grout filling operation of the sleeve joint embedded in the column head of the PC column member has been described. Not limited to.
For example, even when a sleeve joint is embedded in the column base portion of the PC column member, the inside of the PC column member is provided by providing an injection passage connected to the grout inlet of the sleeve joint, as described above. The grout filling of the sleeve joint can be carried out without leaving any foreign matter.

  The grout filling method of the present invention can also be applied when filling a grout into a sleeve joint provided on a PC beam member or a PC joint member. 20 shows a joint between the PC beam member 30 and the PC joint member 40. FIG. 20A is a vertical sectional view in the axial direction of the PC beam member 30, and FIG. 20B shows the axis of the beam member 30. FIG. As shown in the figure, the PC beam member 30 includes a sleeve joint 33 on the end surface on the joint portion side with the PC joint member 40. Further, the PC joint member 40 includes a beam main bar 32 that protrudes from an end surface on the joint portion side with the PC beam member 30. The main beam 32 of the PC joint member 40 is inserted into the sleeve joint 33, the grout is filled into the sleeve joint 33, and the PC joint member 40 and the PC beam member 30 can be joined by hardening the grout. . In such a configuration, when the grout is filled in the sleeve joint 33 provided in the PC beam member 30, an injection passage 31 may be provided as shown in FIGS. 20 (A) and 20 (B). Thereby, it is possible to perform grout filling to the plurality of sleeve joints 33 at a time without leaving foreign matter on the PC beam member 30.

  Furthermore, the grout filling method of this embodiment can also be applied to the case where grout is filled in a sheath tube embedded in a PC member. As shown in FIG. 21A, the upper PC column member 50 includes a sheath tube 53, and a column main bar 52 protruding from the upper surface of the lower PC column member 60 passes through the sheath tube 53. When injecting grout into such a sheath tube 53, a grout injection port (not shown) is provided on the side surface of the sheath tube 53, and the grout injection passage 51 is connected to the grout injection port of each sheath tube 53. What is necessary is just to provide. Then, by injecting grout into the grout injection passage 51, each sheath tube 53 can be filled with grout.

  Similarly, the grout filling method of the present embodiment is constructed such that the PC column member in which the column main bar protrudes from the upper surface and the sheath tube are embedded, and this column tube penetrates the column main bar of the PC column member. It can also be applied to the operation of filling the sheath tube with grout when joining the inserted PC joint member.

  Further, in the grout filling method of the present embodiment, the PC joint member in which the column main bar protrudes from the upper surface and the sheath tube are embedded, and the sheath pipe is built so that the column main bar of the PC port member penetrates. It can also be applied to the operation of filling the sheath tube with grout when joining the PC column member.

  Further, as shown in FIG. 21B, the PC beam member 70 is provided with a sheath tube 73, and the main beam 72 projecting from the joining side end surface of the PC connection member 75 penetrates the sheath tube. Also, a grout injection port (not shown) is provided on the side surface of each sheath tube 73, a grout injection passage 71 is formed so as to be connected to the grout injection port of each sheath tube 73, and the grout is injected into the grout injection passage 71. Thus, each sheath tube 73 can be filled with grout.

  Similarly, in the grout filling method of this embodiment, the PC beam member in which the main beam of the beam protrudes from the end surface on the joining side and the sheath tube are embedded, and the main beam of the PC beam member passes through the sheath tube. It can also be applied to the operation of filling the sheath tube with grout when joining the PC joint member built in the container.

  Further, in the grout filling method of the present embodiment, the PC beam member in which the main beam of the beam protrudes from the end surface on the joining side and the sheath tube are embedded, and the sheath tube is built so that the main beam of the PC beam member penetrates. When joining a PC beam member, it is applicable also to the operation | work which fills a sheath pipe with grout.

According to the grout filling method of the present embodiment, the following effects can be obtained.
(1) Since a grout injection passage is provided inside the PC column member by a retractable hose member and the hose member is removed, it is possible to prevent the structural strength from being lowered due to foreign matters remaining in the PC column member. Can do.
(2) The injection passages are configured to communicate with each other, and the grout inlets of all the sleeve joints are connected to any one of the injection passages, so that all the sleeve joints are filled with grout all at once. Therefore, workability can be improved.
(3) When grout is filled in each sleeve joint as in the past, the grout is filled until it overflows into each sleeve joint to ensure that the grout is filled in the sleeve joint. However, in the grout filling method of the present embodiment, since all the sleeve joints are grouted at once, the amount of overflowing grout can be reduced.
(4) In the method of separately filling grout into each joint, it takes time, so the grout that has been kneaded or filled may be hardened, and the hardened grout was wasted, According to the grout filling method of the present embodiment, the grout can be filled at a time, so that the grout can be reliably filled before the grout is cured.

  In the present embodiment, the hose member 21 is used as a rod-shaped member for forming the injection passage. However, the present invention is not limited to this, and the present invention is applicable to any member that can be removed from the concrete constituting the PC column member after the concrete is hardened. It can be used as a rod-shaped member.

  In the present embodiment, the hose member 21 is filled with gas. However, the present invention is not limited to this, and any liquid, powder, or the like may be used as long as the filling into the hose member 21 and the release from the hose member 21 are easy. A fluid can also be used.

Moreover, although this embodiment demonstrated the case where a grout injection | pouring channel | path was formed in PC member consisting of a reinforced concrete member, not only this but the case where a grout injection | pouring channel | path is formed in PC member consisting of a steel frame concrete member or a steel frame reinforced concrete member It can also be applied to. Furthermore, the present invention can be applied not only to the PC member but also to the case where the grout injection passage is formed in a concrete member that is cast on the spot.
Further, in the present embodiment, the case where the grout injection passage is formed has been described. However, it is also possible to use the grout discharge passage discharged from the sleeve joint or the sheath tube in the same manner.

(A) is a horizontal sectional view of the PC pillar member which is the object of the grout filling method of the present embodiment, and (B) is a vertical sectional view. (A) is sectional drawing which shows the fixing member (the 1) for fixing a hose member to the grout inlet of a sleeve coupling, (B) is a side view. (A) is sectional drawing which shows the fixing member (the 2) for fixing a hose member to the grout inlet of a sleeve coupling, (B) is a side view, (C) is a top view. It is a figure which shows the sleeve coupling which processed the grout inlet in order to attach a hose member. (A) is a perspective view of a rod-shaped member, and (B) is a cross-sectional view. It is a figure which shows the state which connected the rod-shaped member to the grout inlet of the sleeve coupling. It is a figure which shows the cap connected to a rod-shaped member. It is a figure which shows the state which connected the rod-shaped member to the grout inlet of the sleeve coupling using the cap. It is a figure for demonstrating the method of removing a rod-shaped member. (A) is a figure which shows a PVC pipe with a taber, and (B) is a figure which shows the method of removing a polyvinyl chloride pipe with a taper with a grooving jig. It is a figure which shows the jig which has a mechanism which spreads the sharp front-end | tip part used for removing a polyvinyl chloride pipe | tube outside. It is a figure which shows the jig | tool which has a mechanism which expands the front-end | tip part provided with the friction member used for removing a PVC pipe outside. (A) is a figure which shows the disk used for removing a PVC pipe, (B) is sectional drawing which shows the condition which installed the PVC pipe and the disk in the grout inlet of a sleeve joint, (C) These are figures which show a mode that a PVC pipe and a disk are removed. It is a figure which shows a mode that the diameter of the vinyl chloride pipe | tube with which the cut was put shrink | contracts. It is a figure (the 1) for demonstrating the filling method of the grout of this embodiment, (A) is a horizontal sectional view, (B) is a vertical sectional view. It is a figure (the 2) for demonstrating the grout filling method of this embodiment, (A) is a horizontal sectional view, (B) is a vertical sectional view. (A) is a horizontal sectional view showing the arrangement of the injection passage when the main rebar is double buried near the outer periphery of the reinforced concrete member, and (B) is the main portion near the outer periphery and the center of the concrete member. It is a vertical sectional view which shows arrangement | positioning of the injection | pouring channel | path when a reinforcing bar is embed | buried. (A) It is a horizontal sectional view of a reinforced concrete member provided with an injection passage for grout injection, and (B) is a vertical sectional view. It is a figure which shows the reinforced concrete member which provided the several injection | pouring channel | path, (A) is a case where 8 pieces and (B) are provided. The joint part of a PC beam member and a PC joint member is shown, (A) is a vertical sectional view in the axial direction of the PC beam member, and (B) is a vertical sectional view in a direction orthogonal to the axis of the beam member. (A) is a cross-sectional view of a column member provided with an injection passage for filling a sheath tube with grout, and (B) is a cross-sectional view of a beam member provided with an injection passage for filling the sheath tube with grout. It is sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 PC pillar member 12 Column main reinforcement 13 Sleeve joint 14 Grout inlet 15 Opening 16 Inlet 17 Outlet 18 Main reinforcement 19 Grout 20 Injection passage 21 Hose members 22, 25 Fixing member 23 Grout inlet
30 PC beam member 31 Injection passage 32 Beam main bar 33 Sleeve joint 40 Joint member 50, 60 PC column member 51 Injection passage 52 Column main bar 53, 73 Sheath pipe 70 Beam member 71 Injection passage 72 PC beam main member 75 PC joint member 80 Rod member 81 Nut 82 Hole 83 Cap 84 Drill 101, 141 PVC pipe 102 Grooving jig 110 Disc 110A Opening 121, 131 Jig 121A, 131A Handle part 121B Tip part 131B Friction member

Claims (3)

A concrete member having a sleeve joint or sheath tube having a grout pouring outlet,
The sleeve joint or the sheath pipe communicates with a grout pouring / discharging port, and a pouring / discharging passage having an opening on the surface of the concrete member is formed ,
The sleeve joint or sheath tube is arranged to be arranged in a plurality of rows,
The injection / discharge passage is formed corresponding to each row of the plurality of rows of sleeve joints or sheath tubes, and each of the injection / discharge passages has a plurality of sleeves arranged in a row corresponding to the injection / discharge passage on the side thereof. A concrete member characterized in that it communicates with a grout injection port of a joint or a sheath tube . The concrete member is a PC pillar member,
The concrete member according to claim 1, wherein the sleeve joint or the sheath tube is embedded in a column head of the PC column member in a vertical direction . The concrete member is a PC beam member,
The concrete member according to claim 1, wherein the sleeve joint or the sheath tube is embedded in a beam end portion of the PC beam member in an axial direction of the PC beam member.