JP5041796B2 - Method and structure for joining precast reinforced concrete beam members - Google Patents

Description

  The present invention belongs to a technical field of a joining method and a joining structure between precast reinforced concrete (hereinafter, appropriately referred to as PCa) beam members.

  Conventionally, as illustrated in FIGS. 21A and 21B, the joining method and joining structure between PCa beam members are such that, after joining the reinforcing bars b and b protruding from the opposing PCa beam members a and a, concrete is applied to the joint. It is common practice to perform placement (not shown). Incidentally, the method of joining (joining) the reinforcing bars b and b includes a pressure welding joint method, a welded joint method, a mechanical joint method, and the like. From this point of view, it is common to secure the interval L between the PCa beam members a and a by about 150 cm (for example, FIG. 1 of Patent Document 1, FIG. 4 of Patent Document 2, and Patent Document 3). (See FIG. 3). Incidentally, FIGS. 21A and 21B show an embodiment constructed in a structural form (so-called skewering method or the like) in which a plurality of column main bars c are projected above the PCa column member e. The symbol d in the figure indicates a support work.

  However, since the conventional method of joining the PCa beam members a and a needs to secure an interval between the PCa beam members a and a of about 150 cm from the viewpoint of work, the joint between the rebars b and b is necessary. After completion of the work, in order to fill the gap between the beam members a and a, a concrete placement mold is installed in the vicinity of the joint portion between the opposing PCa beam members a and a, and the concrete is placed. It was necessary to carry out a large post-construction work for integrating the joint portion between the reinforcing bars b and b and the PCa beam members a and a. Therefore, there was a problem that the construction period was prolonged and it was too uneconomical.

  By the way, FIG. 22 has shown the joining method from which PCa beam members a and a differ. In this technique, a sleeve joint f is embedded horizontally in one (left side in the illustrated example) PCa beam member a, and a reinforcing bar b is projected horizontally in the other (right side in the illustrated example) PCa beam member a. Then, the other PCa beam member a is moved in the horizontal direction (left direction in the illustrated example), the rebar b is inserted into the sleeve joint f and stored, and the joint portion is filled with grout to form the PCa beam. The members a and a are joined to each other (for example, see FIG. 3 of Patent Document 4).

  According to the technique shown in FIG. 22, the PCa beam members a and a can be joined to each other by an operation of filling the joint portion (gap) with grout with almost no space between the PCa beam members a and a. Therefore, a large-scale post-work such as placing concrete formwork in the vicinity of the joint portion between the PCa beam members a and a facing each other and placing concrete is unnecessary, and can be greatly simplified. Compared with the technology according to FIGS. 21A and 21B, the post-construction can be simplified to shorten the construction period, and it seems to be excellent in economic efficiency.

JP-A-3-212537 JP-A-5-340003 JP-A-5-86643 Japanese Patent Application Laid-Open No. 2004-346587

  Although the technique according to FIG. 22 (for example, Patent Document 4) can simplify the post-construction and shorten the work period as compared with FIGS. 21A and 21B, This is because it is implemented in a structural form (so-called reverse skewering method, reverse insertion column, etc.) in which a plurality of column main bars c are projected below the PCa column member e, which allows horizontal movement.

That is, as shown in FIGS. 21A and 21B, the horizontal movement of the PCa beam member a is constrained for the structure type in which a plurality of column main bars c protrude above the PCa column member e. Such a technique, that is, a technique of moving the PCa beam member in the horizontal direction cannot be applied at all, and it is still necessary to perform a large-scale post-work, and the problem that the construction period becomes long and is too uneconomical cannot be solved.
Further, the technique according to FIG. 22 needs to move the PCa beam member a having a weight of several tons in the horizontal direction, and the PCa beam member a is in a lower position until the upper PCa column member e is attached. There is a problem in terms of safety because an unstable state that is merely placed on the upper surface of the PCa column member e is forced. Furthermore, in the technique according to FIG. 22, the left PCa beam member a is first positioned, and then the right PCa beam member a is positioned. The PCa beam member a cannot be positioned, and the construction procedure is subject to great restrictions.

  The object of the present invention is not only a structural form in which a plurality of column main bars c are projected below the PCa column member e (see FIG. 22), but also a structure type in which a plurality of column principal bars c are projected above the PCa column member e. (Refer to FIGS. 21A and 21B) It can be particularly preferably carried out, and when joining the PCa beam members a and a, large post-work is greatly simplified without moving the PCa beam members a in the horizontal direction. An object of the present invention is to provide a joining method and a joining structure between precast reinforced concrete beam members, which can shorten the construction period and are excellent in workability, safety, and economy.

As a means for solving the problems of the background art, a method for joining precast reinforced concrete beam members according to the invention described in claim 1 is a method for joining precast reinforced concrete beam members,
An end portion abutting the side of the one side of the beam member and an end portion abutting the side of the other side of the beam members to form a width direction thickness of the beam member to the half-lap shape by cutting the stepped, the each stepped end was half-lap shape, combined the Rukoto provided consolidated hole wick that matches the width direction of the beam member,
Before combining the stepped end between Kihari member, the connecting hole the core are matched, the coupling member inserted so as to extend over both of the stepped ends of the beam member, thereafter, of the beam members together A hardened material is filled into the joining portion and the connecting hole, and the precast reinforced concrete beam members are joined together.

Method of joining pre-cast reinforced concrete beam members to each other according to the invention described in claim 2 is the method of joining pre-cast reinforced concrete beam members to each other,
The end on the abutting side of the beam member on one side and the end on the abutting side of the other beam member are formed as a concave end and a convex end that are combined with each other when viewed from the plane direction. Providing a connecting hole in the width direction of the beam member that matches the core when combined with each of the portion and the convex end,
Combine the concave end and convex end of the beam members, and insert the connecting member across the concave end and convex end of each beam member into the connecting hole where the cores match. Then, the precast reinforced concrete beam members are integrally joined by filling the joining portion between the beam members and the connecting hole with a hardening material .

The joint structure between the precast reinforced concrete beam members according to the invention described in claim 3 is a joint structure between the precast reinforced concrete beam members.
The end on the butting side of the beam member on one side and the end on the butting side of the other beam member are formed in a phased shape in which the thickness in the width direction of the beam member is cut out in a step shape, Each of the stepped end portions having a phase shape is provided with a connecting hole in the width direction of the beam member that matches the core when combined.
The stepped ends of the beam members are combined, and the connecting member is inserted into the connecting hole where the cores coincide with each other so as to straddle both stepped ends of each beam member,
A hardened material is filled in the joint portion between the beam members and the connection hole, and the precast reinforced concrete beam members are integrally joined .

The joint structure between the precast reinforced concrete beam members according to the invention described in claim 4 is a joint structure between the precast reinforced concrete beam members.
The end on the abutting side of the beam member on one side and the end on the abutting side of the other beam member are formed into a concave end and a convex end that are combined with each other when viewed from the plane direction. A connecting hole in which the cores coincide with each other in the width direction of the beam member when combined with each of the portion and the convex end portion;
The concave end and convex end of the beam members are combined, and the connecting member is inserted into the connecting hole where the cores are aligned so as to straddle both the concave end and the convex end of each beam member. is being done,
A hardened material is filled in the joint portion between the beam members and the connection hole, and the precast reinforced concrete beam members are integrally joined .

According to a fifth aspect of the present invention, in the joint structure between precast reinforced concrete beam members according to the third or fourth aspect of the present invention, each of the connecting holes provided in the beam members is formed as a through hole. Or one of them is formed in a through hole and the other is formed in a non-through hole .

The invention described in claim 6 is the joining structure of the precast reinforced concrete beam members according to any one of claims 3 to 5, wherein the connecting hole provided between the beam members includes a long nut, sheath tube, or characterized that you have been formed in the concrete hole.

The invention described in claim 7 is a joining structure of precast reinforced concrete beam members according to any one of claims 3 to 6, wherein the connecting member is a threaded bolt, a reinforcing bar, a screw joint reinforcing bar, or the like. and wherein the deformed bar der Rukoto.

The invention described in claim 8 is a joint structure of precast reinforced concrete beam members according to any one of claims 3 to 7, and each of the portions where the beam members are combined has an uneven surface shape. It has been characterized by Rukoto.

  According to the joining method and joining structure of precast reinforced concrete beam members according to claim 1 to claim 8, a structural form in which a plurality of column main bars protrude below the PCa column member (so-called reverse skewering method, reverse insertion column, figure 22), of course, the present invention can be particularly preferably applied to a structure type in which a plurality of column main bars protrude above the PCa column member (so-called skewering method, see FIGS. 21A and B). When joining the PCa beam members 1, 1, without moving the PCa beam members 1 in the horizontal direction, by using a simple formwork material such as a steel plate and filling a small amount of a hardening material 5 such as grout. Can be reliably joined together. Therefore, large-scale post-construction work can be dramatically simplified, and the construction period can be greatly shortened. Therefore, the workability, safety, and economic efficiency are extremely excellent.

  The joining method and joining structure of precast reinforced concrete (PCa) beam members according to the present invention are implemented as follows in order to achieve the effects of the invention described above.

1 to 3 show a joint structure of precast reinforced concrete beam (PCa beam) members described in claim 3 .
The joint structure between the precast reinforced concrete beam members 10 and 11 is such that the end portion 10a on the abutting side of the beam member 10 on one side and the end portion 11a on the abutting side of the other beam member 11 are the width direction thickness of 11 is formed in a half-lap shape cut out stepwise, said phase-out shape as the stepped end 10a, each of 11a, combining the consolidated hole wick that matches 1
Are provided in the width direction of the beam members 10 and 11 . Before Kihari members 10 and 11 to each other stepped end 10a, 11a are combined, the core is connecting member 2 to the coupling hole 1 match, both stepped end 10a, 11a of the beam member 10, 11 It is inserted so that it may straddle. The joint portion 3 between the beam members 10 and 11 and the connecting hole 1 are filled with the hardener 4 so that the precast reinforced concrete beam members 10 and 11 are integrally joined together (invention according to claim 3 ). .

The PCa beam members 10 and 11 according to FIGS. 1 to 3 show the joint structure of the beam members 1 and 1 having a small width used in the so-called reverse beam method, but the present invention is not limited to this. As shown in the drawing, the present invention can be applied to a joining structure of PCa beam members 10 and 11 having a large width (for example, a substantially square cross section) applied to a general column beam frame. The same technical idea applies to the following embodiments.
Incidentally, the width dimension about 180mm beam members 10, 11 according to FIGS. 1 to 3, blame about 750mm beam, stepped end 10a, 11 a width dimension is 90mm about a, notch (projected) length Is carried out at about 670 mm. For convenience of illustration, beam bars, stirrup bars, and the like arranged inside the beam members 10 and 11 are omitted.

Both of the connecting holes 1 provided in the stepped end portions 10a and 11a according to the first embodiment are 12 in good balance (three in the vertical direction and four in the horizontal direction) in order to realize a good joined state. ) Is arranged. Of course, the number of the connecting holes 1 is not limited to 12, but may be appropriately increased or decreased according to the size of the stepped ends 10a and 11a and the required bonding strength.

In addition, the connecting holes 1 according to the first embodiment are formed by forming each connecting hole 1 into a through hole penetrating in the horizontal direction (the invention according to claim 5 ). Specifically, the connecting hole (through hole) 1 is formed by embedding a sheath tube (not shown), but the method of forming the through hole is not limited to this, and is formed by a concrete hole. (The invention according to claim 6 ). Incidentally, the concrete hole is formed by a method in which an air tube is installed at a position where the connecting holes 1 are provided before placing concrete, and after the concrete is placed, air is extracted and the tube is extracted. The diameter of the connecting hole 1 is about 26 mm.

For the connecting member 2 according to the first embodiment, rod-shaped reinforcing bars (including deformed reinforcing bars such as screw joint reinforcing bars) are preferably used (the invention according to claim 7 ). The connecting member 2 has a diameter of about 16 mm and a length of about 180 mm, which is equal to the width of the beam members 10 and 11. The reason why the diameter of the connecting member 2 is about 16 mm is that a gap of about 5 mm is usually secured in order to satisfactorily fill the portion where the connecting member 2 is inserted into the connecting hole 1. This is because it is preferable.

Although the hardening material 4 according to the first embodiment is implemented by the grout 4, the mortar, the resin mortar, the epoxy resin, or the concrete, or these depending on the shape and size of the filling portion or the required design strength Ru can be implemented in a combination of. The same technical idea applies to the following embodiments.

Thus, when the beam members 10 and 11 are provided in an opposing arrangement, and the stepped ends 10a and 11a provided at the end portions of the respective abutting sides are combined and positioned, the connection provided at the stepped ends 10a and 11a is provided. The holes 1 coincide with each other to enter the horizontal direction. In the state where the same number of the connecting members 2 as the connecting holes 1 are inserted into the connecting holes 1 from the outside in the horizontal direction, the joint portions 3 between the beam members 10 and 11 and the connection When the hardening material 4 is filled (filled) in the hole 1 without a gap, the precast reinforced concrete beam members 10 and 11 are joined together with a required strength.

In addition, it is preferable that the portions (abutment surfaces) where the stepped end portions 10a and 11a of the beam members 10 and 11 are combined to form an uneven surface shape, so that shear force can be more sufficiently transmitted. (Invention of Claim 8 ). There are various methods for forming the abutment surface into an uneven surface shape. For example, a checker plate is used as a mold for constructing the beam members 10 and 11, or a shear cotter, a mesh wire net, or the like is used. Can be considered. The same technical idea applies to the following embodiments.

The joint structure of the precast reinforced concrete beam members described above is constructed by the method described below.
That is, the method of joining the precast reinforced concrete beam members 10 and 11 includes the beam members 10 and 11 having the above-described structure provided in an opposing arrangement, and positions the stepped end portions 10a and 11a in combination.

  When the beam members 10 and 11 are applied to a structure type in which a plurality of column main bars protrude above the PCa column member (so-called skewering method, see FIGS. 21A and B), the beam members 10 and 11 are moved in the horizontal direction. Since it cannot be positioned, both the beam members 10 and 11 are suspended and positioned in an opposing arrangement. The gap between the beam members 10 and 11 is almost impossible to carry out without leaving a gap. However, the gap H is about 2 cm from the viewpoint of structural design and suspension work (see FIGS. 3A to 3C). ) Is preferably performed. The same technical idea applies to the following embodiments.

Next, the connecting member 2 is inserted into the matching connecting holes 1... So as to almost evenly straddle the stepped ends 10a and 11a of both beam members 10 and 11 (see FIG. 3C). After that, the precast reinforced concrete beam members 10 and 11 are integrated with each other with a required strength by filling the joint portion 3 between the beam members 10 and 11 and the connecting hole 1 with the hardening material 4 without gaps. (Invention of claim 1).

  Therefore, according to the joining method of the precast reinforced concrete beam members and the joining structure constructed by the same method, a structure type in which a plurality of column main bars protrude below the PCa column member (so-called reverse skewering method, reverse insertion column, figure 22), of course, the beam members 10 and 11 can be particularly suitably applied to a structure type in which a plurality of column main bars protrude above the PCa column member (so-called skewering method, see FIGS. 21A and B). In joining together, the beam member 10 or the beam member 11 is not moved in the horizontal direction, but by using a simple formwork material such as a steel plate and filling with a small amount of a hardening material 4 such as grout, the beam member. 10 and 11 can be reliably joined together. Therefore, large-scale post-construction work can be dramatically simplified, and the construction period can be greatly shortened. Therefore, the workability, safety, and economic efficiency are extremely excellent.

5-7 has shown the Example from which the joining structure of the precast reinforced concrete beam (PCa beam) member described in Claim 3 differs. In the joining structure according to the second embodiment, as compared with the first embodiment, the connection hole 1 provided on the stepped end portion 11a side of the beam member 11 is implemented by the non-through hole 1a. (Invention of claim 5 ). Therefore, the shape of the beam members 10 and 11, the hardening material 4 and the like are the same as those in the first embodiment, and the description thereof is omitted as appropriate.

That is, the joint structure between the precast reinforced concrete beam members 10 and 11 according to the second embodiment is such that the end portion 10a on the butting side of the beam member 10 on one side and the end portion 11a on the butting side of the other beam member 11 are However, the beam members 10 and 11 are formed in a notch shape in which the thickness in the width direction is notched in a step shape , and the cores coincide with each of the stepped end portions 10a and 11a having the notch shape . consolidated holes 1,1a are provided in the width direction of the beam members 10 and 11 that. Before Kihari members 10 and 11 to each other stepped end 10a, 11a are combined, the connecting member 2 to the coupling hole 1,1a the core are matched is stepped ends 10a of the respective beam members 10 and 11, 11a (in the specifically illustrated embodiment, to the extent in contact with the inner wall of the connecting hole (non-through hole) 1a) so as to extend over both of the Ru inserted Empire. The beam members 10 and 11 joined portions 3 and stiffeners 4 in the connecting hole 1,1a of each other are filled with precast reinforced concrete beam members 10 and 11 to each other are integrally joined (in claim 3, wherein invention). However, it should be noted that the connecting member 2 uses a slightly shorter connecting member 2 because the connecting hole 1a is implemented as a non-through hole as compared with the first embodiment. Moreover, it is preferable to implement the width dimension S (refer FIG. 7C) of the non-penetrating part of the said connection hole 1a by the width dimension which can ensure a required cover thickness on structural design.

The joint structure of the precast reinforced concrete beam members described above is constructed by the method described below.
That is, provided the beam members 10 and 11 each other above-described structure in opposed, each stepped end 10a, when positioned in combination 11a, stepped-shaped end portion 10a, connecting hole 1 provided in 11a, 1a matches each other. The same number of connecting members 2... As the connecting holes 1, 1 a are inserted into the connecting holes 1, 1 a from the outside in the horizontal direction to the extent that they contact the back wall of the non-through hole 1 a. After that, the precast reinforced concrete beam members 10 and 11 can be bonded to each other at a required strength by filling the joint portions 3 between the beam members 10 and 11 and the connecting holes 1 and 1a with the hardening material 4 without gaps. They are joined together.

Therefore, according to the joining method of the precast reinforced concrete beam members and the joining structure constructed by the same method, the same operational effects as those of the first embodiment can be obtained (see paragraph [ 0031 ]). In addition, since the joining structure according to the second embodiment implements the connecting hole 1a provided on the beam member 11 side as a non-through hole, the joining work between the beam members 10 and 11 (specifically Since the filling work of the hardener 4 can be performed from one side, there is an advantage that it can be suitably implemented in a joining structure of PCa beam members used for construction of a veranda or a balcony.

FIGS. 8-14 has shown the Example from which the joining structure of the precast reinforced concrete beam (PCa beam) member described in Claim 3 differs. Compared with the first and second embodiments, the joint structure according to the second embodiment is not provided with the connecting holes 1 and 1a (5 and 6) but the steel pipes 13 and 14 (see FIG. 13). And the long nut 16 (see FIG. 14) or the like (the invention described in claim 6 ) and the connecting member 2 is implemented by the threaded bolt 12 (the invention described in claim 7 ). Is different. Therefore, since the shape of the beam members 10 and 11, the number and arrangement of the connection holes 5 and 6, the curing material 4 and the like are the same as those in the first and second embodiments, the description thereof will be omitted as appropriate.

That is, the joint structure between the precast reinforced concrete beam members 10 and 11 according to the third embodiment is as follows.
A phase in which the end 10a on the abutting side of the beam member 10 on one side and the end 11a on the abutting side of the other beam member 11 are notched in steps in the width direction of the beam members 10 and 11. formed in-out shape, said phase-out shape as the stepped end 10a, each of 11a, are consolidated hole 5,6 wick that matches is provided in the width direction of the beam members 10 and 11 when combined Yes. Before Kihari members 10 and 11 to each other stepped end 10a, 11a are combined, the connecting member (threaded bolt) to the coupling hole 5 and 6 the core is matched 12, stepped end of each beam member 10 and 11 It is firmly screwed so as to straddle both the parts 10a and 11a and is fixedly positioned. A hardened material 4 is filled in the joint portion 3 between the beam members 10 and 11 and the connection hole 5 so that the precast reinforced concrete beam members 10 and 11 are integrally joined together (invention according to claim 3 ). . Incidentally, reference numeral 7 in FIG. 10 indicates a beam line, and reference numeral 8 indicates an irregular line.

Hereinafter, the structure of the connecting holes 5 and 6 will be specifically described.
As shown in FIGS. 13A and 13B, the connecting hole 5 provided on the stepped end portion 10a side of the beam member 10 is bent in a substantially semicircular arc shape at the upper and lower ends, and has a small diameter at the center. The large-diameter steel pipe 13 and the small-diameter steel pipe 14 are integrated at the center of the metal fitting 15 provided with a through-hole having a size corresponding to the outer diameter of the steel pipe 14 by joining means such as welding so that the cores communicate with each other. Is formed.
On the other hand, as shown in FIGS. 14A and B, the connecting hole 6 provided on the stepped end 11a side of the beam member 11 has a metal fitting 17 whose upper and lower ends are bent in a substantially semicircular arc shape. A long nut 16 is integrally formed at the center of the member by a welding means such as welding.
Incidentally, the metal fittings 15 and 17 are formed in shapes and dimensions that can be hooked on the beam bars 7 and 7 (diameter is about 25 mm) arranged in parallel at the upper and lower bent portions. . As an example, the large-diameter steel pipe 13 according to the illustrated example has an outer diameter of about 42.7 mm and a wall thickness of about 1.2 mm, and the small-diameter steel pipe 14 has an outer diameter of about 28.6 mm and a wall thickness of 1.2 mm. The height of the long nut 16 is about 55 mm.

Thus, as shown in FIGS. 10A to 10C and 11, the connecting holes 5 and 6 having the above-described structure are formed by arranging the upper and lower bent portions of the metal fittings 15 and 17 in the arranged beam bars 7 and 7, respectively. Positioning is performed within the stepped ends 10a and 11a of the beam members 10 and 11 by the procedure of latching and sequentially sliding in the horizontal direction. As shown in FIG. 11, the positioning operation is performed so that the cores of the steel pipes 14 and 15 forming the connection hole 5 and the long nut 16 forming the connection hole 6 coincide with each other. Pay particular attention to. Incidentally, reference numeral 9 in the figure indicates a reinforcing bar (outer diameter of about 75 mm) for preventing the small-diameter steel pipe 14 and the long nut 16 from being broken (see FIG. 12), and is omitted for convenience of illustration. However, it is positioned with a binding wire or the like during the bar arrangement work. Moreover, the code | symbol 18 in a figure has shown the washer.

That is, the joint structure of the precast reinforced concrete beam members 10 and 11 according to the third embodiment includes an end portion 10a on the butt side of the beam member 10 on one side and an end portion 11a on the butt side of the beam member 11 on the other side. However, the beam members 10 and 11 are formed in a notch shape in which the thickness in the width direction is notched in a step shape , and the cores coincide with each of the stepped end portions 10a and 11a having the notch shape . consolidated holes 5 and 6 are provided in the width direction of the beam members 10 and 11 that. Before Kihari members 10 and 11 to each other stepped end 10a, 11a are combined, threaded bolts (coupling members) to the connecting hole 5, 6 core matches 12, stepped end of each beam member 10 and 11 It is firmly screwed into the long nut 16 of the connection hole (non-through hole) 6 and positioned so as to straddle both the parts 10a and 11a . The joint portion 3 between the beam members 10 and 11 and the connecting hole 5 (specifically, the large diameter steel pipe 13) are filled with the hardening material 4 so that the precast reinforced concrete beam members 10 and 11 are integrated with each other. It is joined (invention of claim 3 ).

The joint structure of the precast reinforced concrete beam members described above is constructed by the method described below.
That is, when the beam members 10 and 11 having the above-described structure are provided in an opposing arrangement and the respective stepped ends 10a and 11a are combined and positioned, the connecting holes 5 provided in the stepped ends 10a and 11a, 6 match each other. From the outside, the same number of threaded bolts (connecting members) 12... As the connecting holes 5, 6 are sufficiently screwed into the connecting nuts 5, 6 into the long nuts 16 that form the connecting holes 6. . After that, the precast reinforced concrete beam member 10 is filled by filling (filling) the hardened material 4 into the large-diameter steel pipe 13 forming the joint portion 3 between the beam members 10 and 11 and the connecting hole 5 without gaps. , 11 are joined together with the required strength.

Therefore, according to the joining method of the precast reinforced concrete beam members and the joining structure constructed by the same method, the same operational effects as those of the first embodiment can be obtained (see paragraph [ 0031 ]). In addition, since the joining structure according to the third embodiment can perform the joining work between the beam members 10 and 11 from one side, the same effects as those of the second embodiment can be obtained.
[Reference example]

15 to 17 show a reference example of a structure for joining flop Rekyasuto reinforced concrete beams (PCa Beams) members to each other. The joining structure according to this reference example is formed by forming the stepped end portions 10a and 11a into a phased shape in which the thickness in the vertical direction is notched in a step shape as compared with the first embodiment. and Iruko, it differs mainly using the beam members 10 and 11 is larger width dimension. Therefore, since the connecting member 2, the curing material 4 and the like are the same as those in the first embodiment, description thereof will be omitted as appropriate.

In other words, the joint structure between the precast reinforced concrete beam members 10 and 11 according to this reference example is such that the end portion 10a on the abutting side of the beam member 10 on one side and the end portion 11a on the abutting side of the beam member 11 on the other side. , are formed in the vertical direction thickness outs phase notched stepped shape of the beam members 10 and 11, said phase-out shape as the stepped end 10a, each of 11a, wick that matches combining for consolidated hole 1 ... it is provided in a vertical direction. Before Kihari members 10 and 11 to each other stepped end 10a, 11a are combined, the core is connecting member 2 to the coupling hole 1 match, both stepped end 10a, 11a of the beam member 10, 11 It is inserted in the vertical direction so as to straddle and is positioned. The beam members 10 and 11 cured material 4 is filled precast reinforced concrete beam members 10 and 11 to each other in the joint portion 3 and the connecting hole 1 ... within each other that are integrally joined.

The joint structure of the precast reinforced concrete beam members described above is constructed by the method described below.
That is, provided the beam members 10 and 11 to each other in opposed, each stepped end 10a, when positioned in combination 11a, stepped-shaped end portion 10a, connecting holes provided in 11a 1, 1 ... are vertically Each matches in a state of penetrating in the direction. Into the connecting hole 1,1 ..., from the outside, positioned by inserting the connecting hole 1 ... as many of the connecting member 2 ... a vertically respectively, the beam members 10 and 11 to each other junction 3 and The precast reinforced concrete beam members 10 and 11 are integrally joined to each other with a required strength by filling the connecting holes 1.

Contact name illustration is omitted, in this reference example, stepped ends 10a of the beam member 10 and 11, but the connecting hole 1,1 provided in 11a are carried out in each through-hole, the step When the connecting hole 1 performed in blind holes provided in the shaped ends 10a, like the coupling member 2 can be easily positioned by dropping by its own weight, better workability.

18 to 20 shows the actual施例the junction structure of precast reinforced concrete beams (PCa Beams) between members according to claim 4. In the joining structure according to the fourth embodiment, as compared with the first embodiment, the stepped end portion of either one (the beam member 10 in the illustrated example) is formed in a concave shape when viewed from the plane direction, and the other ( The main difference is that the beam member 11) is formed in a convex shape and can be combined. Therefore, since the connecting member 2, the curing material 4 and the like are the same as those in the first embodiment, description thereof will be omitted as appropriate.

That is, the joint structure between the precast reinforced concrete beam members 10 and 11 according to the fourth embodiment includes an end portion 10a on the butt side of the beam member 10 on one side and an end portion 11a on the butt side of the beam member 11 on the other side. but viewed from the planar direction, are formed in a concave shape end 10a and a convex end portion 11a mating with each other, each of the concave edge portion 10a and the convex end portions 11a, combining the consolidated hole wick that matches 1 ... are provided . A concave end portion 10a of each other before Kihari members 10 and 11 and a convex end portion 11a are combined, the connecting member 2 to the coupling hole 1 the core are matched is, a concave end portion 10a of the beam members 10 and 11 It is inserted and positioned in the horizontal direction so as to straddle both the convex end portion 11a . Invention of the beam members 10 and 11 joined portions 3 and cured material 4 to the connecting hole 1 ... in between is filled precast reinforced concrete beam members 10 and 11 to each other are integrally joined (claim 4, wherein ).

The joint structure of the precast reinforced concrete beam members described above is constructed by the method described below.
In other words, it said beam member 10, 11 to each other is provided in oppositely disposed and positioned as a combination of the concave edge portion 10a and the convex end portions 11a, a connecting hole provided in the concave shaped end 10a and a convex end portion 11a 1, 1... Coincide with each other in the horizontal direction. To the connecting holes 1, 1, the same number of connecting members 2 as the connecting holes 1 are inserted and positioned from the outside in the horizontal direction, and the joint portions 3 of the beam members 10, 11 are connected to each other. The precast reinforced concrete beam members 10 and 11 are integrally joined to each other with a required strength by filling the connecting holes 1... With the hardening material 4 without any gaps (the invention according to claim 2). .

Therefore, according to the joining method of the precast reinforced concrete beam members and the joining structure constructed by the same method, the same effects as those of the first embodiment can be obtained (see paragraph [ 0031 ]).

  The embodiments have been described with reference to the drawings. However, the present invention is not limited to the illustrated embodiments, and design modifications and application variations that are usually made by those skilled in the art are within the scope of the technical idea of the invention. Note that it includes the range. For example, a long nut may be used in place of the connecting member 2, and threading bolts may be inserted and tightened at both ends thereof to further enhance the fixability to the filler 4.

It is the perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 1. FIG. It is the disassembled perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 1. FIG. A is the top view which showed the principal part of the junction structure of the precast reinforced concrete beam members which concern on Example 1, B is the same front view, C is the same sectional side view. It is the perspective view which showed the variation of the joining structure of the precast reinforced concrete beam members which concern on Example 1. FIG. It is the perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 2. FIG. It is the disassembled perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 2. FIG. A is a top view which showed the principal part of the junction structure of the precast reinforced concrete beam members which concern on Example 2, B is the same front view, C is the same sectional side view. It is the perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 3. FIG. It is the disassembled perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 3. FIG. A is a top view which showed the principal part of the junction structure of the precast reinforced concrete beam members which concern on Example 3, B is the same front view, C is the same sectional side view. It is the sectional side view which showed the structure of the hole for connection of the joining structure of the precast reinforced concrete beam members which concern on Example 3 in detail. It is the front view which showed the reinforcing bar used in Example 3. FIG. A is the front view which showed the connection hole provided in the notch part side of the beam member which concerns on Example 3, B is the right view. A is the front view which showed the hole for a connection provided in the protrusion part side of the beam member which concerns on Example 3, B is the same right view. It is the perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on a reference example . It is the disassembled perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on a reference example . A is a top view which showed the principal part of the junction structure of the precast reinforced concrete beam members which concern on a reference example , B is the same front view, C is the same sectional side view. It is the perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 4. FIG. It is the disassembled perspective view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on Example 4. FIG. A is a top view which showed the principal part of the junction structure of the precast reinforced concrete beam members which concern on Example 4 , B is the same front view, C is the same sectional side view. A and B are the front views which showed the principal part of the joining structure of the precast reinforced concrete beam members based on a prior art. It is the front view which showed the principal part of the joining structure of the precast reinforced concrete beam members which concern on a prior art.

DESCRIPTION OF SYMBOLS 1, 1a Connection hole 2 Connection member 3 Joining part 4 Hardening material 5, 6 Connection hole 7 Beam reinforcement 8 Stirrup 9 Reinforcement reinforcement 10 Precast reinforced concrete beam member 10a Stepped end (or concave end)
11 Precast reinforced concrete beam member 11a stepped end (or convex end)
12 Threaded bolts 13 and 14 Steel pipes 15 and 17 Metal fitting 16 Long nut 18 Washer H Clearance

Claims (8)

In the method of joining precast reinforced concrete beam members,
An end portion abutting the side of the one side of the beam member and an end portion abutting the side of the other side of the beam members to form a width direction thickness of the beam member to the half-lap shape by cutting the stepped, the each stepped end was half-lap shape, combined the Rukoto provided consolidated hole wick that matches the width direction of the beam member,
Before combining the stepped end between Kihari member, the connecting hole the core are matched, the coupling member inserted so as to extend over both of the stepped ends of the beam member, thereafter, of the beam members together A method for joining precast reinforced concrete beam members, wherein a pre-cast reinforced concrete beam member is integrally joined by filling a joining portion and the connecting hole with a hardening material. In the method of joining precast reinforced concrete beam members,
The end on the abutting side of the beam member on one side and the end on the abutting side of the other beam member are formed as a concave end and a convex end that are combined with each other when viewed from the plane direction. Providing a connecting hole in the width direction of the beam member that matches the core when combined with each of the portion and the convex end,
Combine the concave end and convex end of the beam members, and insert the connecting member across the concave end and convex end of each beam member into the connecting hole where the cores match. After that, a precast reinforced concrete beam member joining method is characterized in that the precast reinforced concrete beam members are integrally joined by filling the joining portion between the beam members and the connecting hole with a hardening material. In the joint structure between precast reinforced concrete beam members,
An end portion abutting the side of the one side of the beam member, and the end portion abutting the side of the other side of the beam member is formed in-lap shape in the width direction thickness cut out in a stepped same beam member, said each stepped end was half-lap shape, combined when the consolidated hole wick that matches is provided in the width direction of the beam member,
Before stepped end between Kihari member are combined, the connecting member to the connecting hole core matches is inserted so as to extend over both of the stepped ends of the beam member,
A joining structure of precast reinforced concrete beam members, wherein a hardened material is filled in the joint portion between the beam members and the connection hole, and the precast reinforced concrete beam members are integrally joined. In the joint structure between precast reinforced concrete beam members,
  The end on the abutting side of the beam member on one side and the end on the abutting side of the other beam member are formed into a concave end and a convex end that are combined with each other when viewed from the plane direction. A connecting hole in which the cores coincide with each other in the width direction of the beam member when combined with each of the portion and the convex end portion;
The concave end and convex end of the beam members are combined, and the connecting member is inserted into the connecting hole where the cores are aligned so as to straddle both the concave end and the convex end of each beam member. is being done,
A joining structure of precast reinforced concrete beam members, wherein a hardened material is filled in the joint portion between the beam members and the connection hole, and the precast reinforced concrete beam members are integrally joined. The connecting holes provided between the beam members are each formed as a through hole, or one of them is formed as a through hole and the other is formed as a non-through hole. A joint structure between precast reinforced concrete beam members according to claim 3 or 4 . 6. The precast reinforced concrete beam members according to claim 3 , wherein the connection holes provided between the beam members are formed of a long nut, a sheath tube, or a concrete hole. Bonding structure. The joining structure of precast reinforced concrete beam members according to any one of claims 3 to 6 , wherein the connecting member is a deformed reinforcing bar such as a threaded bolt, a reinforcing bar, or a threaded joint reinforcing bar. The joint structure of precast reinforced concrete beam members according to any one of claims 3 to 7 , wherein each of the portions where the beam members are combined has an uneven surface shape.

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