JP2007023567A - Connection structure of precast concrete beam members, and connection method for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of PC beam members, which does not require much time and labor when produced and constructed, and contributes to cost reduction. <P>SOLUTION: A pair of the PC beam members 20, 30 are full PC members. One of the PC beam members 20 is formed of: beam main reinforcements 21, 22 which are embedded in the PC beam member 20 and extend to a connection end; a PC fitting portion 40 which is protruded from a connection end face 20A of the one PC beam member 20 in a beam axial direction; and overlapping reinforcements 41, 42 which are embedded in the PC fitting portion 40 and extend in the beam axial direction. The other PC beam member 30 is formed of: beam main reinforcements 31, 32 which are embedded in the PC beam member 30 and extend to a connection end face 30A; and a notched portion 34 formed in a connection end of the PC beam member 30 and opened in the connection end face 30A. Herein the PC fitting portion 40 is fitted into the notched portion 34 formed in the other PC beam member 30, and the overlapping reinforcements 41, 42 are arranged astride joint portions of the beam main reinforcements 21, 22, 31, 32 of the PC beam members 20, 30, respectively, followed by pouring grout in a gap between the PC fitting portion 40 and the notched portion 34 formed in the PC beam member 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joining structure and joining method for precast concrete beam members, and more particularly to a joining structure and joining method for precast concrete beam members in which beam main bars are joined by lap joints.

  Conventionally, when building a reinforced concrete column beam frame, a column beam frame is sometimes constructed using a precast concrete (hereinafter referred to as PC) member in order to shorten the construction period and reduce the cost. As a method of constructing such a column beam frame, for example, Patent Document 1 describes a method for constructing a column beam frame 1 using a PC member as shown in FIG.

  As shown in FIG. 1, the column beam frame 1 made of a PC member includes a PC beam member 14, a PC column member 10, and a PC joint panel member 11. The PC joint panel member 11 is a PC member configured in a rectangular parallelepiped shape, and includes a plurality of column main reinforcement holes 13 penetrating in the vertical direction, a plurality of beam main reinforcement holes 17 penetrating in the horizontal direction, and a PC beam main reinforcement hole 17. And a beam main bar joint 16 embedded in the beam. The PC beam member 14 includes a beam main bar 15 whose end protrudes in the horizontal direction from the joint end surface. In addition, the PC column member 10 includes a column main reinforcement 18 and a mechanical joint 19 for the column main reinforcement connected to the upper end portion of the column main reinforcement 18.

Then, the protruding portion of the beam main bar of the PC beam member 14 is inserted from the beam main bar hole 17 of the PC joint panel 11 and fixed by the beam main bar joint 16, and the column main bar hole 13 of the PC joint panel 11 is fixed. The PC column member 10, the PC beam member 14, and the PC joint panel member 11 are integrally constructed by inserting the relay bar 12 and connecting to the mechanical joint 19 for the column main bar of the PC column on the lower floor. In this way, when building a column beam frame with a long span between columns, the PC beam member is divided into two or more at the middle part of the column beam frame. It is possible to construct a beam member by providing a mechanical joint for beam main bars at one of the joint ends and connecting the beam main bars with this mechanical joint. In Patent Document 1, as shown in FIG. 13, the divided PC beam member 14 is formed integrally with the PC joint panel member 11, and the PC beam member 14 formed integrally with the PC joint panel member 11 is formed as follows. A method is described in which a column beam frame is constructed by building in the horizontal direction and joining the beam main bars 15 with the mechanical joint 9.
JP 2004-278257 A

However, in the case of using a method in which the PC beam members are divided and the beam main bars of the PC beam members are connected using mechanical joints, the following problems occur.
(1) When a PC beam member is manufactured, a mechanical joint and a corresponding beam main bar must be accurately arranged, and it takes time and effort to manufacture the PC beam member.
(2) Since the mechanical joint has a diameter larger than that of the reinforcing bar, it is necessary to widen the width of the PC beam member, which increases the cost.
(3) Mechanical joints are very expensive compared to lap joints, resulting in high costs.
(4) When joining the PC beam members, the PC beam members must be moved horizontally in order to insert the beam main bars corresponding to the mechanical joints, which is troublesome.
(5) Each joint part must be filled with a grout material, which takes time and effort to manage the work. Moreover, it is necessary to insert the relay bar from the upper part of the joint panel member, and it is necessary to provide a joint on the column head that is difficult to visually recognize.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a joint structure of PC beam members that can be reduced in cost without trouble during production and construction.

The joint structure of a pair of PC beam members according to the present invention is a joint structure of a pair of PC beam members, wherein the pair of PC beam members are full PC members, and one PC beam member is the one PC beam. Embedded in the member and extending to the joint end, the main beam of the beam, the PC fitting part provided so as to protrude in the axial direction of the beam from the joint end surface of the one PC beam member, and embedded in the PC fitting part The other PC beam member is embedded in the other PC beam member and extends to the joining end, and the other PC beam member has an opening at the joining end surface of the other PC beam member. And the PC fitting portion is fitted into the notch portion of the other PC beam member, and the overlapped reinforcing bar is connected to the joint of the main beam of the one PC beam member and the other PC beam member. It is arranged so as to straddle, the PC fitting part and the other PC beam member Grout into the gap between the cutout portion is characterized by comprising been injected.

In the joining structure of a pair of PC beam members according to the present invention, the pair of PC beam members are half PC members, and one PC beam member is embedded in the one PC beam member and extends to the joining end. It is provided so as to be exposed at the upper part of the lower end bar and the one PC beam member, and is provided so as to protrude in the axial direction of the beam from the upper end bar extending to the joint end and the joint end surface of the one PC beam member. A PC fitting portion and a stacked reinforcing bar embedded in the PC fitting portion and extending in the axial direction of the beam, and the other PC beam member is embedded in the other PC beam member and extends to the joint end portion. A lower end line, an upper end line that is provided so as to be exposed at an upper portion of the other PC beam member, and extends to a joint end; and a notch that opens to the joint end surface of the other PC beam member. The upper bar of the PC beam member or the upper bar of the other PC beam member Any one of them has a mechanical joint at an end, the PC fitting portion is fitted into a notch portion of the other PC beam member, and the overlapping reinforcing bar is formed of the one PC beam member and the other PC beam. It is arranged so as to straddle the joint of the beam main bar of the member, the upper end bars of the one PC beam member and the other PC beam member are joined by the mechanical joint, and the PC fitting part and the other notch part A grout material is injected into the space between them, and concrete is placed on top of the one PC beam member and the other PC beam member.
Here, you may have an unevenness | corrugation in the inner surface of the notch part of the said other PC beam member, and the surface of a PC fitting part.

  According to the above-mentioned joint structure of the PC beam members, the overlapping reinforcing bars are arranged so as to straddle both beam main reinforcing bars in the vicinity of the pair of main reinforcing bars, so that the tensile force of the main reinforcing bars can be transmitted by the lap joint. For this reason, compared with the method of joining a beam main reinforcement with a mechanical joint, a precision is not requested | required and manufacture of a PC beam member becomes easy.

  In addition, since the mechanical joint has a larger diameter than the reinforcing bar, it was necessary to widen the width of the PC beam member. However, if a lap joint is used, if the overlapping reinforcing bar is placed above or below the beam main bar, Well, it is not necessary to increase the width of the PC beam member. Further, since the lap joint is less expensive than the mechanical joint, the cost can be reduced.

  Furthermore, when connecting the main beam of a beam using a mechanical joint, grout material had to be injected into each mechanical joint into which the main beam of the beam was inserted. According to the structure, it is only necessary to inject a grout material into the gap between the PC fitting member and the notch, and the operation becomes easy.

  Further, in the joining structure of a pair of PC beam members according to the present invention, the pair of PC beam members are full PC members, and the one PC beam member is embedded in the one PC beam member to reach the joining end portion. A beam main bar that includes a beam main bar that extends and a notch portion that opens in a joint end surface and a side surface of the one PC beam member, and the other PC beam member is embedded in the other PC beam member and extends to the joint end portion. And a notch portion that opens at a joint end face and a side surface of the other PC beam member, and forms a recess on the beam side surface together with the notch portion of the one PC beam member, and is overlapped in the recess in the axial direction of the beam A PC fitting member in which a reinforcing bar is embedded is inserted, and the overlapped reinforcing bar is disposed so as to straddle the joint of the main beam of the one PC beam member and the other PC beam member, and the PC fitting member and the recess Grout material is injected into the gap between And wherein the Rukoto.

  In the above-mentioned PC beam member joining structure, the pair of PC beam members include a C-type shear reinforcement member in which a portion through which the notch portion passes and a connection provided at both ends of the C-type shear reinforcement member. And the C-type shear reinforcement bar and the relay reinforcing bar may be connected by the connection means so as to relay both ends of the C-type shear reinforcement bar.

  In the PC beam member joining structure of the present invention, the pair of PC beam members are half PC members, and one PC beam member is embedded in the one PC beam member and extends to the joining end. A streak, upper end bars on both sides that are provided to be exposed on the side surface above the one PC beam member, and extend to the joint end, and a notch that opens to the joint end surface and the upper surface of the one PC beam member; A central upper end line provided between the upper end bars on both sides and extending to the end of the notch, and the other PC beam member is embedded in the other PC beam member and extends to the joint end. It is provided so as to be exposed on the side surface on the upper side of the lower PC and the other PC beam member, and opens on the upper end bar on both sides extending to the joint end, the joint end surface and the upper surface of the other PC beam member, A recess is formed on the upper surface of the beam together with the notch of the one PC beam member. An upper reinforcing bar provided between the upper end bars on both sides and a central upper reinforcing bar extending to the end of the notched part and embedded in the axial direction of the beam; A PC fitting member provided with an upper end relay bar extending in the axial direction of the beam is fitted into the recess, and the overlapped reinforcing bar is connected to the one PC beam member and the other PC beam member. The upper end relay bars are arranged so as to line up substantially uniaxially with the upper end bars in the center of the one PC beam member and the other PC beam member. Upper end bars at both ends of the PC beam member and the other PC beam member are connected by a lap joint, and an upper end relay bar is provided between the upper end bar at the center of the one PC beam member and the upper upper bar at the center of the other PC beam member. Joined by a mechanical joint, and the PC fitting member The grout material is injected into the gap between the one PC beam member and the notch portion of the other PC beam member, and concrete is cast on the upper portion of the one PC beam member and the other PC beam member. It is characterized by.

The PC beam member joining structure of the present invention is a joining structure of a pair of PC beam members, wherein the pair of PC beam members are full PC members, and one PC beam member is the one PC beam. A lower end line that is embedded in the beam member and extends to the joint end, an upper end line on both sides that is embedded in the upper side surface of the one PC beam member and extends to the joint end part, and a joint end surface of the one PC beam member And a notch portion opened on the upper surface, and a central upper end bar which is provided between the upper end bars on both sides and is exposed in the notch portion, and the other PC beam member is the other PC beam. A lower end line embedded in the member and extending to the joint end, an upper end line on both sides embedded in the upper side surface of the other PC beam member and extending to the joint end, and a joint end surface of the other PC beam member; With an opening on the upper surface and the notch of the one PC beam member Provided with a notch for forming a recess in the upper surface of the beam, and a central upper edge that is provided between the upper end bars on both sides and is exposed in the notch, and extends downward in the beam axial direction. It is provided between the buried bottom reinforcing bars, the top overlapping bars on both sides that extend in the axial direction of the beam, and the upper overlapping bars on both sides, and both ends are exposed at the axial ends. Thus, a PC fitting member having a central upper end reinforcing bar extending in the axial direction of the beam is fitted into the recess, and the lower overlapped reinforcing bar is a lower end bar of the one PC beam member and the other PC beam member. The upper overlapped reinforcing bars on both sides are arranged so as to straddle the joints of the upper end bars on both sides of the one PC beam member and the other PC beam member, and the center upper end relay is arranged. The streaks are the one PC beam member and the other P beam member. It is joined by a mechanical joint between upper central bars of the beam member, and a grout material is injected into a gap between the PC fitting member and the cutout portion of the one PC beam member and the other PC beam member. It is characterized by becoming.
Furthermore, you may have an unevenness | corrugation in the inner surface of the notch part of the said one PC beam member and the other PC beam member, and the surface of a PC fitting member.

According to the above joint structure of PC beam members, the PC beam members are built only by vertical movement, so that the order in which the column beam members are built does not become complicated, and the construction time can be greatly shortened. In addition, when building by horizontal movement, work at the place where the PC beam member moves up is not possible and a large site is required for building, but when building only by vertical movement, Can be built on a small site.
Furthermore, when building a PC column member, the connection of the relay bars is made at the column leg (height of the upper surface of the beam), so joint construction and quality control are facilitated.

  Further, according to the method of joining a pair of PC beam members which are full PC members of the present invention, one PC beam member has a beam main bar embedded in the one PC beam member and extending to the joining end, A PC fitting portion provided so as to protrude from the joint end surface of the PC beam member in the axial direction of the beam, and a stacked reinforcing bar embedded in the PC fitting portion and extending in the axial direction of the beam, The other PC beam member is provided with a beam main bar that is embedded in the other PC beam member and extends to the joint end, and a notch that opens to the joint end surface of the other PC beam member. The PC beam member and the other PC beam member are brought close to each other in the axial direction of the beam, the PC fitting portion is fitted into the notch portion of the other PC beam member, and the overlapping reinforcing bar is connected to the one PC beam member and the other Arranged so as to straddle the joint of the main beam of the PC beam member Characterized by injecting grout into the gap between the notch of the the C fitting portion other PC beam members.

  Further, according to the method of joining a pair of PC beam members that are half PC members of the present invention, one PC beam member is embedded in the one PC beam member and extends to the joining end, An upper end line that is provided to be exposed at the upper portion of the PC beam member and extends to the joint end, and a PC fitting portion that is provided so as to protrude in the axial direction of the beam from the joint end surface of the one PC beam member; An overlapped reinforcing bar embedded in the PC fitting portion and extending in the axial direction of the beam is provided, and the other PC beam member is embedded in the other PC beam member and extends to the joint end, An upper end line provided to be exposed at the upper part of the other PC beam member and extending to the joint end, and a notch opening at the joint end surface of the other PC beam member are provided, and the one PC beam is provided. Either the top bar of the member or the top bar of the other PC beam member On the other hand, a mechanical joint is provided at the end, the one PC beam member or the other PC beam member is brought close to the axial direction of the beam, and the PC fitting portion is cut out of the other PC beam member. And the overlapped reinforcing bar is arranged so as to straddle the joint of the main beam of the one PC beam member and the other PC beam member, and the one PC beam member and the other PC beam are connected by the mechanical joint. The upper end bars of the members are joined, and a grout material is injected into the gap between the PC fitting portion and the cutout portion of the other PC beam member, and the upper portion of the one PC beam member and the other PC beam member is injected. It is characterized by placing concrete.

  Further, according to the method of joining a pair of PC beam members which are full PC members of the present invention, one PC beam member has a beam main bar embedded in the one PC beam member and extending to the joining end, A beam provided at the joint end of the PC beam member and provided with a notch that opens to the joint end surface and the side surface, and the other PC beam member is embedded in the other PC beam member and extends to the joint end. A main bar and a notch portion that opens to a joint end surface and a side surface of the other PC beam member and forms a recess on the side surface of the beam along with the notch portion of the one PC beam member. PC beam members are erected from vertically above so as to be aligned substantially on one axis, and a PC fitting member in which a reinforced reinforcing bar extending in the beam axis direction is embedded in the recess, and the reinforced reinforcing bar is connected to the one PC beam member. And the joint of the main beam of the other PC beam member Is disposed so that, characterized by injecting grout into the gap between the PC fitting member and the recess.

  Further, according to the method of joining a pair of PC beam members that are half PC members of the present invention, one PC beam member is embedded in the one PC beam member and extends to the joining end, Exposed on the side surface above the PC beam member and provided on both side upper end bars extending to the joint end, a notch opening on the joint end surface and upper surface of the one PC beam member, and the upper end bars on both sides A central upper end line extending to the end of the notch is provided, and the other PC beam member is embedded in the other PC beam member and extends to the joining end, It is exposed on the side surface above the other PC beam member, and is open to the upper end bars on both sides extending to the joint end, the joint end surface and the upper surface of the other PC beam member, A notch that forms a recess in the upper surface of the beam together with the notch, A central upper end line provided between the upper end bars on both sides and extending to the end of the notch, and the one PC beam member and the other PC beam member are arranged so as to be aligned substantially on one axis, By inserting a PC fitting member provided with a reinforced rebar embedded so as to extend in the axial direction of the beam and a top relay bar exposed so as to extend in the axial direction of the beam, The upper end relay bars are arranged substantially uniaxially with the upper end bars at the center of the one PC beam member and the other PC beam member, and are arranged so as to straddle the joint of the lower end bars of the one PC beam member and the other PC beam member. The upper end bars of both ends of the one PC beam member and the other PC beam member are connected by lap joints, and the upper end bars at the center of the one PC beam member and the other PC beam members are connected. Insert the upper relay bar between the central upper bars. It joins by a type joint, pours grout material into the space between the PC fitting member and the recess, and puts concrete on top of the one PC beam member and the other PC beam member, To do.

  The method of joining a pair of PC beam members that are full PC members of the present invention is a joining structure of a pair of PC beam members that are full PC members, and one PC beam member includes the one PC beam member. A lower end line embedded in the member and extending to the joint end, an upper end line on both sides embedded in the upper side surface of the one PC beam member and extending to the joint end, and a joint end surface of the one PC beam member; A notch part opened on the upper surface and a central upper end line which is provided between the upper end bars on both sides and whose end parts are exposed in the notch part are provided, and the other PC beam member has the other Joining of the other PC beam member with the lower end bars embedded in the PC beam member and extending to the joint end, and the upper side bars on both sides embedded in the upper side surface of the other PC beam member and extending to the joint end portion Opening in the end face and upper face, the notch of the one PC beam member And a notch portion for forming a recess on the upper surface of the beam, and a central upper end line that is provided between the upper end bars on both sides and whose end portions are exposed in the notch portion, and the one PC beam member and The other PC beam member is built so as to be aligned substantially on one axis, and the lower end overlapped reinforcing bar embedded in the lower part so as to extend in the axial direction of the beam and the upper side surface side are embedded in the recess, and the axial direction of the beam PC fittings having upper end rebars on both sides extending to the upper end, and center upper end rebars provided between the upper end rebars on both sides and extending in the axial direction of the beam so that both ends are exposed at the axial end portions A member is inserted, and the lower overlap bars are arranged so as to straddle the joints of the lower bars of the one PC beam member and the other PC beam member, and the upper overlap bars on both sides are arranged on the one PC beam member. And upper joint on both sides of the other PC beam member The center upper joint bar is joined by a mechanical joint between the center upper joint of the one PC beam member and the other PC beam member, and the PC fitting member and the one A grout material is injected into a gap between the PC beam member and the cutout portion of the other PC beam member.

  According to the present invention, since the lap joint is used for joining the beam main bars, the PC beam member can be easily manufactured. Further, the cost can be reduced as compared with the case where a mechanical joint is used. Furthermore, the grout material can be injected only once during the construction, and the labor can be reduced.

  Hereinafter, in the case where the PC beam member is a full PC member and the case where the PC beam member is a half PC member, the embodiment of the joint structure of the PC beam member of the present invention will be described below. The case where it is built in will be described with reference to the drawings.

  In the following embodiment, a case where the PC joint panel member and the PC beam member are integrally formed will be described. However, even when the PC joint panel member and the PC beam member are not integrally formed, The joint structure of PC beam members of the present invention can be used.

<When the PC beam member is a full PC member and the PC beam member is built by horizontal movement>
First, the case where the PC beam members 20 and 30 are full PC members, and one PC beam member 20 is moved horizontally to join the PC beam members 20 and 30 will be described.
FIG. 1A is a vertical sectional view before the PC beam members 20 and 30 are joined by the joining structure, and FIG. 1B is a horizontal sectional view. A PC fitting member 40 is formed on the PC beam member 20 so as to protrude from the joining end face 20A to the other PC beam member 30 side. Further, a notch 34 is formed in the joint end surface 30A of the PC beam member 30, and the PC fitting member 40 is fitted into the notch 34.

  The PC beam member 20 includes a PC beam member main body 23, a plurality of upper end bars 21 embedded in the upper part of the PC beam member main body 23, a plurality of lower end bars 22 embedded in the lower part of the PC beam member main body 23, and shear reinforcement. A streak (not shown). The upper end bars 21 and the lower end bars 22 are provided so that the ends thereof reach the vicinity of the joint end face 20 </ b> A of the PC beam member 20.

  The other PC beam member 30 includes a PC beam member main body 33, a plurality of upper end bars 31 embedded in the upper part of the PC beam member main body 33, and a plurality of lower end bars 32 embedded in the lower part of the PC beam member main body 33. And a shear reinforcement (not shown). The upper end bars 31 and the lower end bars 32 are provided so that the ends thereof reach the vicinity of the joint end surface 30A. The upper and lower bars 31 and 32 embedded in the PC beam member 30 are aligned substantially uniaxially with the upper and lower bars 21 and 22 embedded in the PC beam member 20 when the PC beam members 20 and 30 are joined. Are arranged as follows. Further, the notch 34 of the PC beam member 30 is provided so as to open to the joint end surface 30A. A cotter is provided on the inner surface of the notch 34.

  The PC fitting member 40 protruding from the joint end face 20 </ b> A of the PC beam member 20 is embedded in the concrete portion main body 43, the upper end rebar 41 embedded in the upper portion of the concrete portion main body 43, and the lower portion of the concrete portion main body 43. A lower end rebar 42. A cotter is provided on the surface of the PC fitting member 40 in the same manner as the inner surface of the notch 34. The upper overlapping bars 41 and 42 are disposed so as to be positioned in the vicinity of the upper reinforcing bars 21 and 31 and the lower reinforcing bars 22 and 32 in a state where the PC beam members 20 and 30 are joined.

Next, a procedure for constructing the joint structure of the PC beam members 20 and 30 will be described.
First, the PC beam member 30 is built, the relay bar 12 is inserted into the column main reinforcement hole 13 of the PC connection panel 11 connected to the PC beam member 30, and the mechanical joint embedded in the upper part of the PC column member 10. The PC beam member 30 is joined to the PC column member 10 by connecting to (not shown).

  Next, by using a lifting machine, the PC beam member 20 is lifted so that its axis substantially coincides with the axis of the other PC beam member 30, and horizontally moved in the axial direction, whereby the PC fitting member 40 is moved. Is inserted into the notch 34 of the PC beam member 30. In the state of being fitted in this way, the upper end rebars 41 are located in the vicinity of the upper end bars 21 and 31 so as to straddle the joints of these upper end bars 21 and 31, and the lower end overlap bars 42 are the lower end bars 22 and 31. It is located in the vicinity of 32 so as to straddle the joint of these lower end bars 22 and 32.

  Next, a relay bar is inserted from above into the column main reinforcement hole 13 of the PC joint panel member 11 formed integrally with the PC beam member 20 and connected to the mechanical joint embedded in the upper part of the PC column member 10. Thus, the PC beam member 20 and the PC column member 10 are joined.

Next, a grout material is injected into the gap between the PC fitting member 40 and the notch 34 through the gap between the joint end faces 20A and 30A of the PC beam member. In addition, a hose for injecting the grout material into the PC beam members 20 and 30 may be embedded in advance, and the grout material may be press-fitted from the hose.
The injected grout material enters the notch 34 and the cotter recess on the surface of the PC fitting member 40 and hardens. Thereby, since stress can be transmitted via the grout material between the upper end bars 21 and 31 and the upper end overlapping reinforcing bars 41, the upper end bars 21 and 31 are connected by the lap joint. Similarly, the lower end bars 22 and 32 are also connected by a lap joint so that a tensile force can be transmitted. Thereby, the PC beam members 20 and 30 are joined.

<When the beam member is a half PC member and the beam member is built by horizontal movement>
Next, a case where the PC beam members 120 and 130 are half PC members and one of the PC beam members 120 is moved horizontally to join the PC beam members 120 and 130 will be described.
2A is a vertical cross-sectional view before the PC beam members 120 and 130 are joined, and FIG. 2B is a horizontal cross-sectional view. One PC beam member 120 is formed with a PC fitting portion 140 so as to protrude from the joint end surface 120A to the other PC beam member 130 side. Further, a notch portion 134 is formed in the joining end surface 130 </ b> A of the other PC beam member 130, and the PC fitting portion 140 is fitted into the notch portion 134 of the PC beam member 130.

  The PC beam member 120 includes a PC beam member main body 123, a plurality of upper end bars 121 provided on the upper part of the PC beam member main body 123, a plurality of lower end bars 122 embedded in the lower part of the PC beam member main body 123, a shear Reinforcing bars (not shown) are provided. The upper end stripe 121 is exposed on the upper side of the PC beam member main body 123, and a mechanical joint 126 is provided at the tip thereof. Further, the upper end bars 121 and the lower end bars 122 are provided so that the ends thereof reach the vicinity of the joint end surface 120 </ b> A of the PC beam member 120.

  The PC beam member 130 includes a PC beam member main body 133, a plurality of upper end bars 131 embedded in the upper part of the PC beam member main body 133, and a plurality of lower end bars 132 embedded in the lower part of the PC beam member main body 133. . Further, the upper end bars 131 and the lower end bars 132 are provided so that the ends thereof extend to the vicinity of the joining end surface 130 </ b> A of the PC beam member 130. Further, the upper end bar 131 of the PC beam member 130 is exposed on the upper side of the PC beam member main body 133, and is aligned with the upper end bar 121 embedded in the PC beam member 120 when the PC beam members 120 and 130 are joined. It is arranged to line up. Further, the notch 134 of the PC beam member 130 is open to the joining end surface 130A, and a cotter is provided on the inner surface of the notch 134.

  The PC fitting portion 140 that protrudes from the joining end surface 120 </ b> A of the PC beam member 120 includes a concrete portion main body 143 and a lower end overlapping reinforcing bar 142 embedded in the lower portion of the concrete portion main body 143. A cotter is provided on the surface of the PC fitting portion 140 in the same manner as the inner surface of the notch portion 134. The bottom overlapped reinforcing bar 142 is disposed in the vicinity of one bottom bar 122, 132 so as to straddle the joint of the bottom bars 122, 132 in a state where the PC beam members 120, 130 are joined.

Next, a procedure for constructing the joint structure of the PC beam members 120 and 130 will be described.
First, the PC beam member 130 is built, the relay bar 12 is inserted into the column main reinforcement hole 13 of the joint panel 11 connected to the PC beam member 130, and a mechanical joint embedded in the upper part of the PC column member 10 ( The PC beam member 130 is joined to the PC column member 10 by connecting to the PC column member 10.

  Next, by using a lifting machine, the PC beam member 120 is lifted so that its axis substantially coincides with the axis of the PC beam member 130, and horizontally moved in the axial direction, whereby the PC fitting portion 140 is moved to the PC. It fits into the notch 134 of the beam member 130. In the state of being inserted in this way, the bottom overlapped reinforcing bar 142 is embedded in the vicinity of the bottom reinforcing bars 122 and 132 and is positioned so as to straddle the joint of these bottom reinforcing bars 122 and 132.

  Next, the relay bar 12 is inserted into the main column hole 13 of the PC joint panel member 11 formed integrally with the PC beam member 120 and connected to the mechanical joint embedded in the upper part of the PC column member 10. Thus, the PC beam member 120 and the PC column member 10 are joined.

Next, the upper end bars 121 and 131 are joined by the mechanical joint 126. Then, the grout material is injected into the gap between the PC fitting part 140 and the notch part 134 from the gap between the joint end faces 120A and 130A of the PC beam member. A hose for injecting the grout material into the PC beam members 120 and 130 may be embedded in advance, and the grout material may be press-fitted from the hose.
The injected grout material enters the cotter recesses on the surface of the notch part 134 and the PC fitting part 140 and hardens. Thereby, one lower end reinforcement 122,132 can be connected by the lap joint by the lower end overlap reinforcement 142, and a tensile force can be transmitted.
Next, concrete is placed on top of the PC beam members 120 and 130. This concrete hardens. Thereby, the PC beam members 120 and 130 are joined.

As described above, according to the joint structure of the PC beam members in which the PC beam members of full PC and half PC described above are built in the horizontal direction, the following effects can be obtained.
When manufacturing a PC beam member, when joining beam main bars using mechanical joints, the mechanical joints and the corresponding beam main bars must be placed accurately. In this case, if the reinforcing bars are arranged in the vicinity of the beam main bars, the tensile force of the beam main bars can be transmitted.

  In addition, since the lap joint is arranged above or below the beam main bar in the joint structure of the PC beam member, it is not necessary to widen the width of the PC beam member, and the lap joint is less expensive than the mechanical joint, Cost reduction is possible.

  Furthermore, when building the PC beam member, when connecting the beam main bar using a mechanical joint, it was necessary to inject grout material into each mechanical joint into which the beam main bar was inserted. However, according to the joint structure of the PC beam members, it is only necessary to inject the grout material into the gap between the PC fitting portion and the notch portion, and the grout injection operation can be performed at one time, so the operation becomes easy. .

<When the beam member is a full PC member and the beam member is built by vertical movement>
Next, a case where the PC beam members 220 and 230 are full PC members and one of the PC beam members 220 is vertically moved to join the PC beam members 220 and 230 will be described.
FIG. 3A is a vertical sectional view before the PC beam members 220 and 230 are joined by the joining structure, and FIG. 3B is a horizontal sectional view. FIG. 4A is an enlarged vertical sectional view in the longitudinal direction of the vicinity of the joint portion of the PC beam members 220 and 230, and FIG. 4B is a vertical sectional view in the width direction of the beam. As shown in FIG. 3, a notch 224 is formed on the joint end surface 220A of one PC beam member 220, and a notch 234 is formed on the joint end surface 230A of the other PC beam member 230. ing. The PC fitting member 240 is fitted into a recess formed by the notches 224 and 234.

The PC beam member 220 includes a PC beam member main body 223, a plurality of upper end bars 221 embedded in the upper portion of the PC beam member main body 223, a plurality of lower end bars 222 embedded in the lower portion of the PC beam member main body 223, and a PC beam. A plurality of shear reinforcement bars 225 embedded in the member main body 223. The upper end bars 221 and the lower end bars 222 are provided so that the ends thereof reach the vicinity of the joint end surface 220 </ b> A of the PC beam member 220.
Further, the notch 224 of the PC beam member 220 has a rectangular parallelepiped shape, and is open to the joint end surface 220A and the side surface. A cotter is provided on the inner surface of the notch 224.

  In addition, as shown in FIG. 4, the shear reinforcing bar 225 has a portion through which the notch 224 passes so as not to interfere with the PC fitting member 240 when the PC fitting member 240 is fitted. An insert 229 is attached to the end.

  The other PC beam member 230 includes a PC beam member main body 233, a plurality of upper end bars 231 embedded in the upper part of the PC beam member main body 233, and a plurality of lower end bars 232 embedded in the lower part of the PC beam member main body 233. And a plurality of shear reinforcement bars 235 embedded in the PC beam member main body 233. The upper bar 231 and the lower bar 232 embedded in the PC beam member 230 are aligned substantially on the same axis as the upper bar 221 and the lower bar 232 embedded in the PC beam member 220 in a state where the PC beam members 220 and 230 are joined. Are arranged as follows.

  A joint end surface 230A and a rectangular parallelepiped notch 234 that opens to the side surface are provided at a joint end portion of the PC beam member 230 with the PC beam member 220. The notch 234 is continuous with the notch 224 of the PC beam member 220 and forms a rectangular parallelepiped recess on the beam side surface. A cotter is provided on the inner surface of the notch 234. Further, as shown in FIG. 4, the shear reinforcement bar 235 embedded in the other PC beam member 230 is a portion corresponding to the notch portion 234, similar to the shear reinforcement bar 225 embedded in one PC beam member 220. Is omitted, and an insert 239 is connected to the end of the shear reinforcement 235.

  The PC fitting member 240 includes a concrete member main body 243, an upper end rebar 241 embedded in the upper portion of the concrete member main body 243, a lower end rebar 242 embedded in the lower portion of the concrete member main body 243, an upper end rebar 241 and And a shear reinforcement bar 244 embedded in the concrete member main body 243 so as to surround the bottom overlapped reinforcing bar 242. A cotter is provided on the surface of the PC fitting member 240 in the same manner as the inner surfaces of the notches 224 and 234.

  The upper end reinforcing bars 241 and the lower end overlapping reinforcing bars 232 are located in the vicinity of the upper end bars 221, 231 and the lower end bars 222, 232 in a state where the PC fitting member 240 is fitted in the notches 224, 234, respectively. 231 and lower end bars 222 and 232 are arranged so as to straddle the joint.

Next, a procedure for constructing a joint structure of PC beam members will be described.
First, the PC beam member 230 is built, the relay bar 12 is inserted into the column main reinforcement hole 13 of the PC connection panel 11 connected to the PC beam member 230, and the mechanical joint provided at the upper part of the PC column member 10. To connect the PC beam member 230 to the PC column member 10. In addition, the relay bar 12 is connected in advance to a mechanical joint on the PC column member 10 on the PC beam member 220 side.

  Next, using a lifting machine, the PC beam member 220 is lifted above the PC column member 10, and the PC beam member 220 is inserted so that the relay bar 12 passes through the column main bar hole 13 of the PC connection panel member 11. The PC beam member 220 and the PC pillar member 10 are joined by being lowered vertically.

  Next, the PC fitting member 240 is lifted and inserted into the concave portion formed by the notches 224 and 234 from the side of the PC beam members 220 and 230. As a result, the upper overlapping bars 241 are arranged in the vicinity of the upper end bars 221, 231 so as to straddle the joints of these upper end bars 221, 231. Similarly, the bottom overlapped reinforcing bars 242 are disposed in the vicinity of the bottom reinforcing bars 222 and 232 so as to straddle the joints of these bottom reinforcing bars 222 and 232.

  Next, as shown in FIG. 5, the end portions of the relay shear reinforcement bars 227 and 237 are joined to the inserts 229 and 239 connected to the shear reinforcement bars 225 and 235. Thereby, the shear reinforcement bars 225 and 235 and the relay shear reinforcement bars 227 and 237 are integrated and function as a shear reinforcement bar.

  Next, a grout material is injected into the gap between the PC fitting member 240 and the notches 224 and 234 and the side surface side of the PC fitting member 240. When this grout material is hardened, one upper end bar 221 and the other upper end bar 231 are connected by a lap joint of the upper end overlapping bar 241. In addition, one lower end reinforcement 222 and the other lower end reinforcement 232 are connected by a lap joint of the lower end overlap reinforcing bar 242. Thereby, the PC beam members 220 and 230 are joined.

<When the beam member is a half PC member and the beam member is built by vertical movement>
Next, a case where the PC beam members 320 and 330 are half PC members, and one of the PC beam members 320 is vertically moved to join the PC beam members 320 and 330 will be described.
FIG. 6A is a vertical sectional view before the PC beam members 320 and 330 are joined by the joining structure, and FIG. 6B is a horizontal sectional view. 7A is an enlarged vertical sectional view in the longitudinal direction of the vicinity of the joint portion of the PC beam members 320 and 330, and FIG. 7B is a vertical sectional view in the width direction of the beam.
As shown in FIG. 6, a notch 324 is formed in the joint end surface 320 </ b> A of one PC beam member 320. Further, a notch 334 is formed in the joining end surface 330A of the other PC beam member 330. The PC fitting member 340 is fitted into a recess formed by the notches 324 and 334.

  The PC beam member 320 includes a PC beam member main body 323, upper end bars 321A and 321B provided above the PC beam member main body 323, a plurality of lower end bars 322 embedded in the lower portion of the PC beam member main body 323, and a PC. And a plurality of shear reinforcement bars 325 embedded in the beam member main body 323. The upper end bars 321A and the lower end bars 322 arranged on the side surface side of the PC beam member 320 are provided so that the ends thereof extend to the joint end surface 320A. The upper end stripe 321B at the center is located near the end of the notch 324 so that it does not interfere with the PC fitting member 340 when the PC fitting member 340 is fitted to the notch 324. A mechanical joint 326 is attached to this end. The notch 324 provided at the joint side end of the PC beam member 320 to the PC beam member 330 is formed in a rectangular parallelepiped shape that opens in the joint end surface 320A and the upper surface direction, and a cotter is provided on the inner surface thereof. Yes.

  Further, as shown in FIG. 7, the shear reinforcing bar 325 has a portion above the notch 324 omitted so as not to interfere with the PC fitting member 340 when the PC fitting member 340 is fitted.

  The PC beam member 330 includes a PC beam member main body 333, upper end bars 331A and 331B exposed above the PC beam member main body 333, a plurality of lower end bars 332 embedded in a lower portion of the PC beam member main body 333, and a PC. And a plurality of shear reinforcement bars 335 embedded in the beam member main body 333.

  Similar to the PC beam member 320, the upper end bars 331A and the lower end bars 332 at both ends above the PC beam member 330 are provided so that the ends thereof extend to the joint end surface 330A. The upper end bar 331B at the center is located near the end of the notch 334 so that it does not interfere with the PC fitting 340 when the PC fitting member 340 is inserted into the notch 334. A mechanical joint 336 is attached to the part.

The upper bar 331A and the lower bar 332 at both ends of the PC beam member 330 are aligned with the upper bar 321A and the lower bar 322 at both ends of the PC beam member 320 when they are joined to each other. Has been placed.
A joint end face 330A and a rectangular parallelepiped notch 334 opening on the upper surface are provided at the joint end of the other PC beam member 330 with the PC beam member 320, and a cotter is provided on the inner surface of the notch 334. It has been. The notch 334 is continuous with the notch 324 of the PC beam member 320 and forms a rectangular parallelepiped recess on the beam upper surface.

  Further, as shown in FIG. 7, the shear reinforcement bar 335 has a portion above the notch 334 so that the PC fitting member 340 and the shear reinforcement bar 335 do not interfere when the PC fitting member 340 is fitted. It is omitted.

  The PC fitting member 340 includes a concrete member main body 343, an upper end relay bar 345 disposed on the upper part of the concrete member main body 343, a lower end overlapping reinforcing bar 342 embedded in a lower portion of the concrete member main body 343, an upper end relay bar 345, and And a shear reinforcement bar 344 provided so as to surround the bottom stacked reinforcing bar 342. The PC fitting member 340 is provided with a cotter on the surface in the same manner as the notches 324 and 334. When the PC fitting member 340 is fitted to the notches 324 and 334, the upper end relay bars 345 are arranged so as to be aligned substantially on one axis with the upper end bars 321B and 331B at both ends. Further, the lower overlapped reinforcing bars 342 are arranged in the vicinity of the lower end bars 322 and 332 so as to straddle the joints of the lower end bars 322 and 332 when the PC fitting member 340 is fitted to the notches 324 and 334. Has been.

Next, a procedure for constructing the joint structure of the PC beam members 320 and 330 will be described.
First, the PC beam member 330 is installed, the relay bar 12 is inserted into the column main reinforcement hole 13 of the PC joint panel 11 connected to the PC beam member 330, and the mechanical joint provided at the upper part of the PC column member 10 is attached. By connecting, the PC beam member 330 is joined to the PC column member 10. In addition, the relay bar 12 is connected to a mechanical joint in advance on the PC column member 10 on the PC beam member 320 side.

  Next, the PC beam member 320 is lifted above the PC column member 10 by using a lifting machine, and the PC beam member 320 is inserted so that the relay bar 12 passes through the column main reinforcement hole 13 of the PC connection panel member 11. The PC beam member 320 and the PC column member 10 are joined.

  Next, as shown in FIG. 8, the PC fitting member 340 is lifted and inserted into the concave portion formed by the notches 324 and 334 of the PC beam members 320 and 330 from above. Thereby, the bottom overlapped reinforcing bars 342 are disposed in the vicinity of the bottom reinforcing bars 322 and 332 so as to straddle the joints of these bottom reinforcing bars 322 and 332.

  Next, the upper end bars 321 </ b> B and 331 </ b> B at the center of the PC beam members 320 and 330 are joined to the upper end relay bars 345 by mechanical joints 326 and 336. Thereby, the center upper end muscles 321B and 331B can transmit a tensile force. Further, the overlapping reinforcing bars 346 are arranged so as to straddle the joint portions of the upper end bars 321A and 331A at both ends.

  Next, a grout material is injected into the gap between the PC fitting member 340 and the notches 324 and 334. By curing the grout material, the lower end bars 322 and 332 are joined by the lap joint.

  Next, concrete is placed on top of the PC beam members 320 and 330. As the concrete hardens, the upper end bars 321A and 331A at both ends are connected by a lap joint. Thereby, the PC beam members 320 and 330 are joined.

<When the beam member is a full PC member and the beam member is built by vertical movement>
Next, the PC beam members 420 and 430 are full PC members, and one PC beam member 420 is vertically moved to bring the PC beam members 420 and 430 close to each other, and the PC fitting member 440 is moved vertically from above the joint portion. The case where the PC beam members 420 and 430 are joined by being built will be described.
FIG. 9A is a vertical sectional view before the PC beam members 420 and 430 are joined by the joining structure, and FIG. 9B is a horizontal sectional view. 10A is an enlarged vertical sectional view in the longitudinal direction of the vicinity of the joint portion of the PC beam members 420 and 430, and FIG. 10B is a vertical sectional view in the width direction of the beam.
As shown in FIG. 9, a notch 424 is formed on the joint end surface 420 </ b> A of one PC beam member 420. Further, a notch 434 is formed in the joining end surface 430A of the other PC beam member 430. The PC fitting member 440 is fitted into a recess formed by the notches 424 and 434.

The PC beam member 420 includes a PC beam member main body 423, upper end bars 421A and 421B embedded in the upper part of the PC beam member main body 423, a plurality of lower end bars 422 embedded in the lower part of the PC beam member main body 423, and a PC. And a plurality of shear reinforcement bars 425 embedded in the beam member main body 423. The upper end bars 421A and the lower end bars 422 at both ends disposed on the side surface side of the PC beam member 420 are provided so that the ends thereof extend to the joint end surface 420A.
The upper portion of the notch 424 extends in the axial direction so that the end of the central upper end bar 421B is exposed, and a mechanical joint 426 is attached to the end of the upper end bar 421B exposed in the notch 424. The notch 424 provided at the joint side end of the PC beam member 420 with the PC beam member 430 is formed in a rectangular parallelepiped shape that opens in the joint end surface 420A and the upper surface direction, and a cotter is provided on the inner surface thereof. Yes.

  Further, as shown in FIG. 10, the shear reinforcement bar 425 has a portion above the notch 424 omitted so as not to interfere with the PC fitting member 440 when the PC fitting member 440 is fitted.

  The PC beam member 430 includes a PC beam member main body 433, upper end bars 431A and 431B embedded in the upper part of the PC beam member main body 433, a plurality of lower end bars 432 embedded in the lower part of the PC beam member main body 433, A plurality of shear reinforcement bars 435 embedded in the PC beam member main body 433.

  Similar to the PC beam member 420, the upper end bars 431A and the lower end bars 432 at both ends above the PC beam member 430 are provided so that the ends thereof extend to the joint end surface 430A. The upper part of the notch 434 extends in the axial direction so that the end of the central upper end bar 431B is exposed, and a mechanical joint 436 is attached to the end of the upper end bar 431B exposed in the notch 424.

When the PC beam members 420 and 430 are joined, the upper end bars 431A and the lower end bars 432 at both ends of the PC beam member 430 are aligned substantially on the same axis as the upper end bars 421A and the lower end bars 422 at both ends of the PC beam member 420. Has been placed.
A joint end face 430A and a rectangular parallelepiped notch 434 opening on the upper surface are provided at the joint end of the other PC beam member 430 with the PC beam member 420, and a cotter is provided on the inner surface of the notch 434. It has been. This notch 434 is continuous with the notch 424 of the PC beam member 420 and forms a rectangular parallelepiped recess on the beam upper surface.

  Further, as shown in FIG. 10, the shear reinforcement bar 435 has a portion above the notch 434 so that the PC fitting member 440 and the shear reinforcement bar 435 do not interfere when the PC fitting member 440 is fitted. It is omitted.

  The PC fitting member 440 includes a concrete member main body 443, upper overlap bars 445A on both sides embedded on the side surface of the upper part of the concrete member main body 443, and a central upper end relay embedded between upper overlap bars 445A on both sides. Shear reinforcement provided so as to surround the reinforcing bars 445B, the lower overlapping bars 442 embedded in the lower part of the concrete member main body 443, the upper overlapping bars 445A on both sides, the central upper relay bar 445B, and the lower overlapping bars 442. And a muscle 444. The PC fitting member 440 is provided with a cotter on the surface in the same manner as the notches 424 and 434.

  When the PC fitting member 440 is fitted into the notches 424 and 434, the upper end rebars 445A at both ends are located in the vicinity of the upper end bars 421A and 431A on both sides and the joints between the upper end bars 421A and 431A on both sides. It is arranged to straddle. The central upper end relay bar 445B is arranged so as to be aligned substantially on the same axis as the upper end bars 421B and 431B at both ends when the PC fitting member 440 is fitted into the notches 424 and 434. Further, the lower overlap bars 442 are arranged in the vicinity of the lower end bars 422 and 432 so as to straddle the joints of these lower end bars 422 and 432 when the PC fitting member 440 is fitted to the notches 424 and 434. Has been.

Next, a procedure for constructing the joint structure of the PC beam members 420 and 430 will be described.
First, the PC beam member 430 is installed, the relay bar 12 is inserted into the column main reinforcement hole 13 of the PC connection panel 11 connected to the PC beam member 430, and the mechanical joint provided at the upper part of the PC column member 10 is attached. By connecting, the PC beam member 430 is joined to the PC column member 10. In addition, the relay bar 12 is connected to the mechanical joint in advance on the PC column member 10 on the PC beam member 420 side.

  Next, using a lifting machine, the PC beam member 420 is lifted above the PC column member 10, and the PC beam member 420 is inserted so that the relay bar 12 passes through the column main bar hole 13 of the PC connection panel member 11. The PC beam member 420 and the PC column member 10 are joined.

  Next, as shown in FIG. 11, the PC fitting member 440 is lifted and inserted into the recesses formed by the notches 424 and 434 of the PC beam members 420 and 430 from above. Thereby, the bottom overlapped reinforcing bars 442 are disposed in the vicinity of the bottom reinforcements 422 and 432 so as to straddle the joints of these bottom reinforcements 422 and 432. Similarly, the upper end overlapping reinforcing bars 445A at both ends are disposed in the vicinity of the upper end reinforcing bars 221A and 231A on both sides so as to straddle the joint portions of the upper end reinforcing bars 221A and 231A on both sides.

  Next, the center upper end bars 421B and 431B of the PC beam members 420 and 430 and the center upper end relay bars 445B are joined by mechanical joints 426 and 436, respectively. Thereby, the center upper end bars 421B and 431B can transmit a tensile force.

Next, a grout material is injected into the gap between the PC fitting member 440 and the notches 424 and 434. By curing the grout material, the lower end bars 422 and 432 are joined by the lap joint. Thereby, the PC beam members 420 and 430 are joined.

As described above, according to the method for building the PC beam member by the vertical movement described above, the following effects can be obtained in addition to the effects obtained by the method for building the PC beam member by the horizontal movement.
Since the PC beam member is built by moving vertically, the order of building the column beam members is not complicated, and the construction time can be greatly shortened. When building by horizontal movement, it is not possible to perform work at the place where the PC beam member moves above, and a wide site is required for building, but when building by only vertical movement, it is narrow. It can be built at the site.
Furthermore, when the column main bars are joined, the joints are the leg portions of the columns (the height of the upper surface of the beam), so that the construction and quality control of the joints are facilitated.

  In each of the above embodiments, the surfaces of the PC fitting portions 40, 140 and the PC fitting members 240, 340, 440 and the inner surfaces of the notches 34, 134, 224, 234, 324, 334, 424, 434 are provided. Although a cotter is provided to transmit the shearing force, the present invention is not limited to this, and the surfaces of the PC fitting portions 40 and 140 and the PC fitting members 240, 340 and 440 and the cutout portions 34, 134, 224, 234 and 324 are not limited thereto. It is good also as a structure which transmits a shearing force by providing a dowel bar in any one of the inner surfaces of 334, 424, and 434, providing a recessed part in the other, and fitting a dowel line and a recessed part.

(A) is a vertical direction sectional view before the PC beam members 20 and 30 are joined, and (B) is a horizontal direction sectional view. (A) is a vertical direction sectional view before the PC beam members 120 and 130 are joined, and (B) is a horizontal direction sectional view. (A) is a vertical direction sectional view before the PC beam members 220 and 230 are joined, and (B) is a horizontal direction sectional view. (A) is the longitudinal direction vertical sectional view which expanded the junction part vicinity of PC beam members 220 and 230, (B) is the width direction vertical sectional view of a beam. It is a vertical sectional view of PC beam members 220 and 230 in a state in which a PC fitting member 240 is fitted. (A) is a vertical direction sectional view before the PC beam members 320 and 330 are joined, and (B) is a horizontal direction sectional view. (A) is the longitudinal direction vertical sectional view which expanded the junction part vicinity of PC beam members 320 and 330, (B) is the width direction vertical sectional view of a beam. It is a vertical sectional view of PC beam members 320 and 330 in a state in which a PC fitting member 340 is fitted. (A) is a vertical direction sectional view before the PC beam members 420 and 430 are joined, and (B) is a horizontal direction sectional view. (A) is the longitudinal direction vertical sectional view which expanded the junction part vicinity of PC beam member 420,430, (B) is the width direction vertical sectional view of a beam. It is a vertical sectional view of PC beam members 420 and 430 in a state where a PC fitting member 440 is fitted. It is a perspective view which shows the construction method of the column beam frame by PC member. It is an elevational view showing a method for constructing a column beam frame in which a PC beam member is divided at an intermediate portion thereof and a PC beam member and a PC joint panel member are integrally formed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Column beam frame 10 PC column member 11 PC joint panel member 12 Relay bar 13 Column main reinforcement hole 20,120,220,320,420 One PC beam member 20A, 120A, 220A, 320A, 420A Joining end surface 21,121, 221, 321 (one) upper bar 22, 122, 222, 322, 422 (one) lower bar 23, 123, 223, 323, 423 (one) PC beam member body 224, 324, 424 (one) Notch portions 30, 130, 230, 330, 430 Other PC beam members 30A, 130A, 230A, 330A, 430A Joint end surfaces 31, 131, 231, 331 (the other) upper end bars 32, 132, 232, 332, 432 ( (The other) bottom beam 33, 133, 233, 333, 433 (the other) PC beam member main body 34, 134, 234, 33 4, 434 (the other) notch part 40,140 PC fitting part 41,241 upper end rebar 42,142,242,342,442 lower end rebar 43,143 concrete part main body 126,136,326,336,426, 436 Mechanical joints 225, 235, 325, 335, 425, 435 Shear reinforcement bars 227, 237 Relay shear reinforcement bars 229, 239 Insert 240, 340, 440 PC fitting members 243, 343, 443 Concrete member bodies 244, 344, 444 Shear reinforcement bars 321A, 421A Upper end bars 321B, 421B (one) central upper bar 328 (one) center upper bars 331A, 431A (other) upper bars 331B, 431B (the other) center Upper end bar 345 Upper end relay bar 346 Stacked bar 445A Upper end of both ends Stacked reinforcing bar 445B Center upper relay bar

Claims (13)

A joint structure of a pair of precast concrete (PC) beam members,
The pair of PC beam members are full PC members,
One PC beam member is
A beam main bar embedded in the one PC beam member and extending to the joining end, a PC fitting portion provided so as to protrude in the axial direction of the beam from the joining end surface of the one PC beam member, and the PC fitting It is embedded in the joint, and has a rebar that extends in the axial direction of the beam,
The other PC beam member is
A beam main bar embedded in the other PC beam member and extending to the joint end, and a notch opening in the joint end surface of the other PC beam member;
The PC fitting portion is fitted into a notch portion of the other PC beam member, and the overlapped reinforcing bar is disposed so as to straddle the joint of the main beam of the one PC beam member and the other PC beam member, A joint structure of PC beam members, wherein a grout material is injected into a gap between a PC fitting portion and a notch portion of the other PC beam member. A joining structure of a pair of PC beam members,
The pair of PC beam members are half PC members,
One PC beam member is
A lower end line embedded in the one PC beam member and extending to the joint end, an upper end line provided to be exposed at the upper part of the one PC beam member and extending to the joint end, and the one PC beam member A PC fitting portion provided so as to protrude in the axial direction of the beam from the joint end surface of the, and a laminated reinforcing bar embedded in the PC fitting portion and extending in the axial direction of the beam,
The other PC beam member is
A lower end line embedded in the other PC beam member and extending to the joint end, an upper end line provided to be exposed at the upper part of the other PC beam member and extending to the joint end, and the other PC beam member A notch opening at the joining end face of
Either one of the upper bar of the one PC beam member or the upper bar of the other PC beam member is provided with a mechanical joint at the end,
The PC fitting portion is fitted into a notch portion of the other PC beam member, and the overlapped reinforcing bar is disposed so as to straddle the joint of the beam main bar of the one PC beam member and the other PC beam member, The upper joints of the one PC beam member and the other PC beam member are joined by a mechanical joint, and a grout material is injected into the gap between the PC fitting portion and the other notch portion, and the one PC beam A joint structure of PC beam members, wherein concrete is cast on the beam member and the other PC beam member.   The joint structure of PC beam members according to claim 1 or 2, wherein the inner surface of the notch portion of the other PC beam member and the surface of the PC fitting portion have irregularities. A joining structure of a pair of PC beam members,
The pair of PC beam members are full PC members,
The one PC beam member is
A beam main bar embedded in the one PC beam member and extending to the joining end; and a notch opening in the joining end surface and side surface of the one PC beam member;
The other PC beam member is
The main beam that is embedded in the other PC beam member and extends to the joint end, the joint end surface and the side surface of the other PC beam member are opened, and a recess is formed on the beam side surface together with the notch of the one PC beam member A notch portion to be
A PC fitting member in which a reinforced rebar extending in the axial direction of the beam is embedded in the recess, and the laid rebar straddles the joint of the main beam of the one PC beam member and the other PC beam member. And a grout material is injected into the gap between the PC fitting member and the recess. A joint structure of a pair of PC beam members according to claim 4,
The pair of PC beam members is
A C-type shear reinforcing bar in which a portion through which the notch passes is omitted;
Connection means provided at both ends of the C-type shear reinforcement,
A joint structure of PC beam members, wherein the C-type shear reinforcing bar and the relay reinforcing bar are connected by the connecting means so as to relay both ends of the C-type shear reinforcing bar. A joining structure of a pair of PC beam members,
The pair of PC beam members are half PC members,
One PC beam member is
Embedded in the one PC beam member and extending to the joint end, and the upper end bars on both sides extending to the joint end provided to be exposed on the side surface above the one PC beam member, A notch portion opened to the joint end surface and the upper surface of one of the PC beam members, and a central upper end stripe provided between the upper end stripes on both sides and extending to the end portions of the notch portion,
The other PC beam member is
A lower end line embedded in the other PC beam member and extending to the joint end, and an upper end bar on both sides provided to be exposed on the side surface above the other PC beam member and extending to the joint end; The cutout portion is provided between a notch portion that opens to the joint end surface and the top surface of the other PC beam member and forms a recess in the top surface of the beam together with the cutout portion of the one PC beam member, and the cutout portion. With a central upper streak extending to the end of the
A PC fitting member provided with an overlapping reinforcing bar embedded so as to extend in the axial direction of the beam and an upper end relay bar provided so as to be exposed at the upper part and extending in the axial direction of the beam is fitted into the recess, The overlapping reinforcing bars are arranged so as to straddle the joints of the lower end bars of the one PC beam member and the other PC beam member, and the upper end relay bars are arranged at the center of the one PC beam member and the other PC beam member. Arranged so as to be substantially uniaxially aligned with the upper end bars, upper end bars at both ends of the one PC beam member and the other PC beam member are connected by a lap joint, and the upper upper end bars and the other at the center of the one PC beam member An upper end relay bar is joined by a mechanical joint between the upper end bars at the center of the PC beam member, and a gap is formed between the PC fitting member and the cutout portion of the one PC beam member and the other PC beam member. Grout material is injected and the one PC beam And joint structure PC Beams concrete on top of the other PC beam member is characterized by comprising the pouring. A joining structure of a pair of PC beam members,
The pair of PC beam members are full PC members,
One PC beam member is
A lower end bar embedded in the one PC beam member and extending to the joint end, an upper end bar on both sides embedded in the upper side surface of the one PC beam member and extending to the joint end, and the one PC beam A notch portion that opens to the joining end surface and the upper surface of the member, and a center upper end line that is provided between the upper end muscles on both sides and whose end portion is exposed in the notch portion,
The other PC beam member is
A lower end bar embedded in the other PC beam member and extending to the joint end; an upper end bar on both sides embedded in the upper side surface of the other PC beam member and extending to the joint end; and the other PC beam An opening is formed on the joint end surface and the upper surface of the member, and is provided between a notch portion that forms a recess on the upper surface of the beam together with the notch portion of the one PC beam member, and an end portion in the notch portion. With a central upper streak exposed at
Provided between the bottom overlapped rebar embedded in the lower part so as to extend in the axial direction of the beam, the upper end overlapped reinforcing bars on both sides extending in the axial direction of the beam, and the upper end overlapped reinforcing bars on both sides A PC fitting member provided with a central upper end reinforcing bar extending in the axial direction of the beam so that both ends are exposed at the end in the axial direction is fitted into the recess, and the lower overlapping bar is the one of the PC beams And the upper overlapped reinforcing bars on both sides straddle the joints of the upper end bars on both sides of the one PC beam member and the other PC beam member. The central upper end reinforcing bar is joined by a mechanical joint between the central upper end bars of the one PC beam member and the other PC beam member, and the PC fitting member and the one PC beam member and other PC beam member notch Joint structure PC beam members, characterized in that the grouting material is being injected into the space between the.   The joint of PC beam members according to any one of claims 4 to 7, wherein there are irregularities on the inner surface of the notch portion of the one PC beam member and the other PC beam member and the surface of the PC fitting member. Construction. A method of joining a pair of PC beam members which are full PC members,
One PC beam member
A beam main bar embedded in the one PC beam member and extending to the joining end; a PC fitting portion provided so as to protrude in the axial direction of the beam from the joining end surface of the one PC beam member; and the PC fitting While being embedded in the joint, and providing a rebar that extends in the axial direction of the beam,
The other PC beam member
A beam main bar embedded in the other PC beam member and extending to the joint end, and a notch opening in the joint end surface of the other PC beam member are provided,
The one PC beam member and the other PC beam member are brought close to each other in the axial direction of the beam, and the PC fitting portion is inserted into the notch portion of the other PC beam member,
The overlapping reinforcing bars are arranged so as to straddle the joints of the main beam bars of the one PC beam member and the other PC beam member,
A method for joining PC beam members, wherein a grout material is injected into a gap between the PC fitting portion and the cutout portion of the other PC beam member. A method of joining a pair of PC beam members that are half PC members,
One PC beam member
A lower end line embedded in the one PC beam member and extending to the joint end, an upper end line provided to be exposed at the upper part of the one PC beam member and extending to the joint end, and the one PC beam member A PC fitting portion provided so as to protrude in the axial direction of the beam from the joint end surface, and a stacked rebar embedded in the PC fitting portion and extending in the axial direction of the beam,
The other PC beam member
A lower end line embedded in the other PC beam member and extending to the joint end, an upper end line provided to be exposed at the upper part of the other PC beam member and extending to the joint end, and the other PC beam member A notch opening in the joint end face of
Either one of the upper bar of the one PC beam member or the upper bar of the other PC beam member is provided with a mechanical joint at the end,
The one PC beam member or the other PC beam member is brought close to the axial direction of the beam, and the PC fitting portion is inserted into the notch portion of the other PC beam member,
The stacked reinforcing bars are arranged so as to straddle the joints of the main beam bars of the one PC beam member and the other PC beam member,
The upper joint of the one PC beam member and the other PC beam member is joined by the mechanical joint,
Injecting grout material into the gap between the PC fitting part and the notch part of the other PC beam member,
A method of joining PC beam members, comprising placing concrete on top of the one PC beam member and the other PC beam member. A method of joining a pair of PC beam members which are full PC members,
One PC beam member
A beam main bar that is embedded in the one PC beam member and extends to the joint end, and a notch that is provided at the joint end of the one PC beam member and opens to the joint end surface and the side surface,
The other PC beam member
The main beam that is embedded in the other PC beam member and extends to the joint end, opens to the joint end surface and side surface of the other PC beam member, and forms a recess on the beam side surface together with the cutout portion of the one PC beam member And a notch to be
The one PC beam member and the other PC beam member are built so as to be aligned substantially on one axis,
A PC fitting member embedded with a reinforced rebar extending in the beam axis direction is inserted into the recess, and the laid rebar is disposed so as to straddle the joint of the main beam of the one PC beam member and the other PC beam member. ,
A PC beam member joining method, wherein a grout material is injected into a gap between the PC fitting member and the recess. A method of joining a pair of PC beam members that are half PC members,
One PC beam member
A lower end line that is embedded in the one PC beam member and extends to the joining end, and an upper end line on both sides that is exposed and provided on the side surface above the one PC beam member and extends to the joining end part; A cut-out portion opened to the joint end surface and the upper surface of the PC beam member, and a central upper-end line that is provided between the upper-end bars on both sides and extends to the end portions of the notch-parts,
The other PC beam member
A lower end line embedded in the other PC beam member and extending to the joint end, an upper end bar located on both sides of the other PC beam member exposed to the upper side and extending to the joint end, and the other The PC beam member has an opening at the joint end surface and the upper surface, and is provided between a notch portion that forms a recess in the upper surface of the beam together with the notch portion of the one PC beam member, and an end of the notch portion. A central upper end line extending to the center,
The one PC beam member and the other PC beam member are built so as to be aligned substantially on one axis,
By inserting a PC fitting member provided with a reinforced rebar embedded so as to extend in the axial direction of the beam and a top relay bar exposed so as to extend in the axial direction of the beam, The upper end relay bars are arranged substantially uniaxially with the upper end bars at the center of the one PC beam member and the other PC beam member, and are arranged so as to straddle the joint of the lower end bars of the one PC beam member and the other PC beam member. Arrange them side by side,
The upper end bars at both ends of the one PC beam member and the other PC beam member are connected by a lap joint,
A top joint is joined by a mechanical joint between the central top bar of the one PC beam member and the central top bar of the other PC beam member,
Injecting a grout material into the gap between the PC fitting member and the recess,
A method of joining PC beam members, comprising placing concrete on top of the one PC beam member and the other PC beam member. A joint structure of a pair of PC beam members which are full PC members,
One PC beam member
A lower end bar embedded in the one PC beam member and extending to the joint end, an upper end bar on both sides embedded in the upper side surface of the one PC beam member and extending to the joint end, and the one PC beam A notch portion opened to the joining end surface and the upper surface of the member, and a top end line at the center that is provided between the upper end bars on both sides and the end portion is exposed in the notch part,
The other PC beam member
A lower end bar embedded in the other PC beam member and extending to the joint end; an upper end bar on both sides embedded in the upper side surface of the other PC beam member and extending to the joint end; and the other PC beam An opening is formed on the joint end surface and the upper surface of the member, and is provided between a notch portion that forms a recess on the upper surface of the beam together with the notch portion of the one PC beam member, and an end portion in the notch portion. With a central upper streak exposed at
The one PC beam member and the other PC beam member are built so as to be aligned substantially on one axis,
In the concave portion, a bottom overlapping reinforcing bar embedded in the lower part so as to extend in the axial direction of the beam, a top overlapping reinforcing bar on both sides extending in the axial direction of the beam, and a top overlapping reinforcing bar on both sides Inserting a PC fitting member provided with a central upper end relay bar provided in the middle, provided so that both ends are exposed at the axial end, and extending in the axial direction of the beam,
The lower overlap bars are arranged so as to straddle the joints of the lower bars of the one PC beam member and the other PC beam member, and the upper overlap bars on both sides are arranged on the one PC beam member and the other PC beam member. And place it across the top muscle joints on both sides of
The center upper relay bar is joined by a mechanical joint between the central upper bar of the one PC beam member and the other PC beam member,
A method of joining PC beam members, characterized in that a grout material is injected into a gap between the PC fitting member and the cutout portions of the one PC beam member and the other PC beam member.

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