JP3336295B2 - Joining method and joining structure of precast reinforced concrete shear walls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method and a joining structure for a precast reinforced concrete shear wall, and more particularly to a joining member projecting horizontally from a precast reinforced concrete pillar at a vertical end of the precast reinforced concrete shear wall. Let it be accommodated in the formed groove,
Precast reinforced concrete columns and part of precast reinforced concrete shear walls are used as direct forms to enable the casting of fillers or fillers, such as concrete, without the use of a separately formed joint formwork at the site. The present invention relates to a method of joining a precast reinforced concrete shear wall for joining a reinforced concrete column and a precast reinforced concrete shear wall, and a joining structure formed by the joining method.

[0002]

2. Description of the Related Art In recent years, precast reinforced concrete structures have been frequently used when constructing buildings, and seismic-resistant supporting structural elements such as columns, beams, and earthquake-resistant walls designed to withstand earthquakes are used. When constructing these precast reinforced concrete structures, it is necessary to vertically join structural members such as precast reinforced concrete columns and precast reinforced concrete shear walls.

FIG. 7 is a sectional view showing a joint obtained by a conventional joining method between a precast reinforced concrete column 1 and a precast reinforced concrete earthquake-resistant wall 2. In the conventional joining method shown in FIG. 7, the vertical end 3 extending in the vertical direction of the precast reinforced concrete shear wall 2 does not extend to the outer surface of the precast reinforced concrete column 1. The precast reinforced concrete earthquake-resistant wall 2 is built in such an arrangement that a space is formed between the vertical ends of the precast reinforced concrete earthquake-resistant wall 2.
FIG. 7 shows that a plurality of reinforcing bars are arranged vertically and horizontally in this space, and concrete or the like is cast.

[0004] In FIG. 7, the precast reinforced concrete column 1 includes an axial reinforcing bar 4 extending vertically from the precast reinforced concrete column 1 to join another precast reinforced concrete column, and a precast reinforced concrete column 1. A plurality of reinforcing bars 5 extending from the precast reinforced concrete column 1 toward the precast reinforced concrete shear wall 2 in the horizontal direction.
And are buried.

[0005] Further, FIG. 7 shows that a horizontal wall bar 6 buried in the precast reinforced concrete earthquake-resistant wall 2 projects horizontally from the vertical end 3 of the precast reinforced concrete earthquake-resistant wall 2 so as to be adjacent to the reinforcing bar 5. Is shown. Conventionally, the number of the reinforcing bars 5 is the same as the number of the normal column horizontal bars 6. In this space portion shown in FIG. 7, a vertical streak 7 is further extended toward the upper side in the vertical direction. Further, a floor slab 8 is bridged between the precast reinforced concrete columns 1, and a precast reinforced concrete earthquake-resistant wall 2 is shown to be built on the floor slab 8. FIG.
1 shows that a joint reinforcing bar 10 extends from a top end 9 of a precast reinforced concrete shear wall 2 in a vertical direction. As described above, in the conventional joining method, concrete or grout 11 is cast in place in the above-mentioned space where a plurality of reinforcing bars are arranged, and a joint between the precast reinforced concrete column 1 and the precast reinforced concrete shear wall 2 is formed. Have been.

FIG. 8 shows a joining method used when joining between the precast reinforced concrete column 1 and the precast reinforced concrete shear wall 2 shown in FIG.
It is the figure cut | disconnected and shown along -A. The precast reinforced concrete column 1 has a plurality of axial reinforcing bars 4 embedded therein, and the axial reinforcing bars 4 are joined with strip bars 12 to secure a predetermined cover thickness t. On the right side of the precast reinforced concrete column 1 as viewed in the drawing, a part of the precast reinforced concrete column 1 is buried, and a reinforcing bar 5 joined between the axial reinforcing bars 4 faces the vertical end 3 of the precast reinforced concrete wall 2. It is shown extended.

Further, FIG. 8 shows that the precast reinforced concrete columns 1
The horizontal wall 6 extending toward
Are shown adjacent to each other.

Referring to FIG. 8, a conventional joining method will be described. The precast reinforced concrete earthquake-resistant wall 2 is erected so that the reinforcing bar 5 protruding from the precast reinforced concrete column 1 and the horizontal transverse bar 6 are positioned as shown in FIG. Later, weirs 13a, 1 for placing cast-in-place concrete
3b is installed to form a mold. Next, concrete or grout 11 is cast in place in the formwork thus formed and hardened, and the precast reinforced concrete wall 1 is formed.
And the precast reinforced concrete shear wall 2 are integrated. Thereafter, the precast reinforced concrete columns 1 and the precast reinforced concrete earthquake-resistant wall 2 are joined by removing the dams 13a and 13b.

[0009] Therefore, in the conventional joining method, a formwork for casting cast-in-place concrete or the like must be installed, and the formwork must be removed after casting cast-in-place concrete. May be unsatisfactory, and the removed formwork may cause environmental problems due to construction waste, and the finish of the precast reinforced concrete shear wall at the joint may not be clean And other inconveniences.

[0010]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method of forming a precast reinforced concrete column and a precast reinforced concrete shear wall without separately providing a joint formwork formed on site between the precast reinforced concrete column and the precast reinforced concrete shear wall. By directly using it as a formwork for concrete casting, it is possible to achieve streamlining of construction and labor saving, and also to reduce the amount of construction waste material, and to join precast reinforced concrete wall joints. It is an object of the present invention to provide a method of joining a precast reinforced concrete wall capable of improving the quality of the entire precast reinforced concrete wall by finishing the method more beautifully than before, and a joining structure formed by the joining method.

[0011]

SUMMARY OF THE INVENTION The above objects of the present invention are as follows.
The problem is solved by providing a joining method and a joining structure of a precast reinforced concrete shear wall of the present invention.

According to the first aspect of the present invention, there is provided a precast reinforced concrete column provided with a joining member projecting in the horizontal direction, and a groove extending along a vertical end portion is formed between the substantially precast reinforced concrete column. Using a precast reinforced concrete shear wall having a width of, and a hardening filler or filler, the joint member is housed in the groove, and the precast reinforced concrete shear wall is erected between the precast reinforced concrete columns, and the precast Using a part of the reinforced concrete column and the precast reinforced concrete shear wall as a formwork, placing the filler or filler in a space defined by the precast reinforced concrete column and the precast reinforced concrete shear wall facing each other. Pleki characterized by Method of joining strike reinforced concrete shear wall is provided.

According to the invention of claim 2 of the present invention, the precast reinforced concrete pillar has a housing groove for accommodating the precast reinforced concrete earthquake-resistant wall. A method is provided.

According to a third aspect of the present invention, the joining member has one end embedded in the precast reinforced concrete column and the other end formed as a reinforcing bar projecting through the accommodation groove. A method for joining reinforced concrete shear walls is provided.

According to the invention of claim 4 of the present invention, the joining member is embedded in the precast reinforced concrete column along the circumferential direction of the precast reinforced concrete column adjacent to the anchor portion. A method for joining a precast reinforced concrete shear wall, comprising: a base; and a plate adjacent to the base and protruding from the precast reinforced concrete column and housed in the groove.

According to a fifth aspect of the present invention, the plate portion is provided with an opening through which a reinforcing bar is welded or which penetrates in a thickness direction of the plate portion. A method for joining reinforced concrete shear walls is provided.

According to the invention of claim 6 of the present invention, the connecting member projecting in the horizontal direction provided on the precast reinforced concrete column is a vertical end portion of the precast reinforced concrete shear wall having a width between the substantially precast reinforced concrete columns. A joint structure of a precast reinforced concrete shear wall formed by casting a filler or filler into a space defined by opposing the precast reinforced concrete column and the precast reinforced concrete shear wall facing each other. Provided.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a diagram showing a precast reinforced concrete earthquake-resistant wall 2 to be joined between the precast reinforced concrete columns 1a and 1b by the joining method of the present invention. As in FIG. 7, an axial reinforcing bar 4 is embedded in the precast reinforced concrete columns 1a and 1b, and the axial reinforcing bar 4 extends further upward from the top ends of the precast reinforced concrete columns 1a and 1b. . Precast reinforced concrete column 1
A floor slab 8 is bridged between a and 1b, and a precast reinforced concrete earthquake-resistant wall 2 is built above the floor slab 8. From the top end 9 of the precast reinforced concrete earthquake-resistant wall 2, a joint reinforcing bar 10 is extended and can be further joined to an upper floor.

In the precast reinforced concrete shear wall 2 shown in FIG. 1, the width between the vertical ends 3a, 3b is substantially equal to the distance between the precast reinforced concrete columns 1a, 1b, or the precast reinforced concrete column 1a. , 1b plus the cover thickness of both precast reinforced concrete columns 1a, 1b. Further, the above-mentioned width of the precast reinforced concrete earthquake-resistant wall 2 does not necessarily need to be longer than the width between the precast reinforced concrete columns 1a and 1b. Precast reinforced concrete columns 1a, 1b to the extent that
It may be shorter than the width between them. Further, the precast reinforced concrete earthquake-resistant wall 2 has grooves 14a, 14a, 3b extending from the vertical ends 3a, 3b inward in the horizontal direction.
14b are provided, and the positions of the grooves 14a, 14b at the horizontal inner ends of the precast reinforced concrete shear walls 2 are indicated by broken lines 15a, 15b in FIG.
In this way, the vertical ends 3a, 3b of the precast reinforced concrete shear wall 2 are extended to approximately the precast reinforced concrete columns 1a, 1b, and the grooves 14a, 14b are further extended.
b, the precast reinforced concrete columns 1a and 1b and the precast reinforced concrete
8 can be used directly as a formwork instead of the weirs 13a, 13b shown in FIG. 8, so that we can use weirs 13a, 13b constructed on site. It is possible to perform the joint without the need.

FIG. 1 shows that connecting bars 16a and 16b, which are joining members used in the present invention, extend from precast reinforced concrete columns 1a and 1b toward the inside of grooves 14a and 14b of precast reinforced concrete shear wall 2. Separations 17a, 17b are provided between the cut lines 16a, 16b and the horizontal inner ends 15a, 15b of the grooves 14a, 14b.
Is formed. This insert 16
The vertical intervals of a and 16b can be the same as the horizontal bars 6 buried in the precast reinforced concrete earthquake-resistant wall 2, or can be appropriately set to different intervals in consideration of work efficiency, proof stress, and the like. be able to.

FIG. 1 shows a receiving groove 1 for accommodating the vertical ends 3a, 3b of the precast reinforced concrete shear walls on the side of the precast reinforced concrete columns 1a, 1b facing the precast reinforced concrete shear walls 2.
The formation of 8a is shown by a broken line. When the width of the precast reinforced concrete earthquake-resistant wall 2 is larger than the distance between the precast reinforced concrete columns 1a and 1b to be built, the accommodation grooves 18a and 18b accommodate a part of the precast reinforced concrete earthquake-resistant wall 2 and are connected to the columns. A joining structure between the walls is formed.

FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1 showing a joint between the precast reinforced concrete column 1a and the precast reinforced concrete shear wall 2.
An axial reinforcing bar 4 and a strip 12 are embedded in the precast reinforced concrete column 1a. From the outer surface of the precast reinforced concrete column 1a on the side facing the precast reinforced concrete earthquake-resistant wall 2, the band 12 is moved toward the column center. A receiving groove 18a for receiving the precast reinforced concrete earthquake-resistant wall 2 is formed so as to reach the inside of the wall. The accommodation groove 18a is shown in FIG. 2 as having a depth exceeding the streak 12, but if the cover thickness is large enough to ensure the joint strength, the accommodation groove 18a is It is also possible to stop the depth within the cover thickness. The above-described axial reinforcing bar 4 may be a main reinforcing bar, or may be an auxiliary reinforcing bar formed separately from the main reinforcing bar when a sleeve is used for connecting the precast reinforced concrete column 1a. One end of a bar 16a used as a joining member in the present invention protrudes from a substantially central portion of the accommodation groove 18a of the precast reinforced concrete earthquake-resistant wall 2.
Is shown inserted into the groove 14a of the precast reinforced concrete shear wall 2. Also, the other end 20 of the bar 16a is buried in the precast reinforced concrete column 1a, and is shown extending toward the opposing surface of the precast reinforced concrete column 1a beyond its center. . The embedding depth of the other end 20 of the reinforcing bar 16a in the concrete column 1a depends on the diameter of the reinforcing bar, the shape of the reinforcing bar, etc., as long as the fixing between the precast reinforced concrete column 1a and the precast reinforced concrete shear wall 2 can be sufficiently performed. It can be set appropriately as needed.

The reinforcing bars 16a may be buried only in the precast reinforced concrete columns 1a, or may be buried after being joined to the adjacent axial reinforcing bars 4 by welding or the like. Further, the embedding length and shape of the stud 16a can be any shape.
Also, in FIG. 2, two bars 16a are shown to be provided along the thickness direction of the precast reinforced concrete earthquake-resistant wall 2, but are inserted into grooves 14 a formed in the precast reinforced concrete earthquake-resistant wall 2. If possible, the number is not necessarily two, and the protruding end 19 of the penetrating bar 16a may be bent into a hook shape to improve the bonding strength.

In FIG. 2, the horizontal reinforcing bar 6 does not protrude from the vertical end 3 a of the precast reinforced concrete wall 2, so that the precast reinforced concrete earthquake-resistant wall 2 is not hindered from being housed in the housing groove 18 a. It is shown. Still referring to FIG. 2, a groove 14a formed from the vertical end 3a of the precast reinforced concrete shear wall 2 to the inside in the horizontal direction is shown in detail. The groove portion 14a is formed by inner side surfaces 21a and 21b of the precast reinforced concrete earthquake-resistant wall 2 and a horizontal inner end 15a, and the inner side surfaces 21a and 21b are inside the vertical wall 22 buried in the precast reinforced concrete earthquake-resistant wall 2. It is shown extending to the horizontal inner end 15a of the groove 14a adjacent to the end. Also,
The horizontal inner end 15a is a plane orthogonal to the precast reinforced concrete earthquake-resistant wall 2 in the thickness direction of the precast reinforced concrete earthquake-resistant wall 2, and shows that the groove 14a is formed as a substantially rectangular shape. The horizontal inner end 15a and the protruding end 19 of the streak 16a
A gap 17a is provided between them so that the tips do not contact each other. Inner surface 21 of precast reinforced concrete shear wall 2 forming this groove 14a
Regarding the positioning of the a and 21b, the positioning of the horizontal inner end 15a, and the shape of the groove 14a, any positioning and shape can be used as long as appropriate workability can be obtained and appropriate joint strength can be obtained. Can be used.

FIG. 2 further shows that concrete or grout 11 is cast in a space defined adjacent to the precast reinforced concrete column 1a and the precast reinforced concrete shear wall 2. This space includes the accommodation groove 18a, the groove 14a, and the vertical end 3
a, an outer surface of the precast reinforced concrete earthquake-resistant wall 2, and a seal member or a seal material described later as necessary. Housing groove 18a that defines this space
As shown in FIG. 2, concrete or grout 11 used as a filler or filler, such as grout or the like, when there is a possibility that concrete or filling may not be sufficiently filled due to the dimensions of the housing groove 18 a and the groove 14 a. Has been cast. In the present invention, the filler or the filler includes those containing various adhesives, and specifically refers to mainly inorganic materials such as concrete, mortar, cement, and grout. Thus, in the present invention, the precast reinforced concrete column 1a
And the precast reinforced concrete earthquake-resistant wall 2 can be used as it is as a formwork when casting concrete or the like, so a formwork in which the precast reinforced concrete column 1a and the precast reinforced concrete earthquake-resistant wall 2 are separately formed on site is used. Without any integration.

At this time, as shown in FIG. 2, the vertical end 3a of the precast reinforced concrete earthquake-resistant wall 2 is integrated while being inserted into the accommodation groove 18a provided in the precast reinforced concrete column 1a. Alternatively, when the grout 11 is filled in the housing groove 18a and the groove portion 14a and hardened, the integrity of the precast reinforced concrete column 1a and the precast reinforced concrete wall 2 is further improved. It is shown that gaps 23a and 23b are provided between the housing groove 18a and the outer surface of the precast reinforced concrete earthquake-resistant wall 2 in consideration of the workability of embedding the precast reinforced concrete earthquake-resistant wall 2. It is possible to prevent leakage of concrete or grout 11 to be cast by arranging a sealing member, a sealing material, or the like as appropriate in 23a and 23b. Further, it is preferable that the above-mentioned gaps 23a and 23b be as small as possible as long as the workability of the erection is not impaired.

The depth at which the vertical end 3a is inserted into the accommodation groove 18a can be appropriately changed within the range up to the cover thickness of the precast reinforced concrete column 1a.
Further, in the present invention, since the precast reinforced concrete earthquake-resistant wall 2 is extended to at least the outer surface of the precast reinforced concrete column 1a, the entire wall including the joint portion is not used when casting concrete or grout 11 without using a formwork. It can be finished neatly, and the quality of the precast reinforced concrete building can be further improved.

FIG. 3 shows a second embodiment of the joining method and the joining structure of the present invention. In the method and structure for joining a precast reinforced concrete according to the second embodiment of the present invention shown in FIG. 3, a joining plate 24 is used as the joining member instead of the stud 16a. This joining plate 24
An anchor portion 25 buried in the precast reinforced concrete column 1a, a base portion adjacent to the anchor portion 25 and extending along the circumferential direction of the precast reinforced concrete column 1a, and protruding from the precast reinforced concrete column 1a adjacent to the base portion 26 And a plate portion 27 to be provided. The above-described portions of the joining plate 24 can be formed separately from each other and formed by welding, or can be manufactured as an integrated structure. The material can be various materials, but iron of the same material as the reinforcing bar usually used for the precast concrete member can be used.

FIG. 3 shows that a projection 25a projecting perpendicularly to the anchor 25 is provided at the tip of the anchor 25 of the joining plate 24 in order to improve the strength of the joining plate 24. ing. This projection 25a
Is not necessarily used as long as the bonding strength of the bonding plate 24 is sufficient, and another shape can be appropriately used in consideration of the proof stress and the like. The anchor portion 25 may be simply embedded in the precast reinforced concrete column 1a, but the side portion 25b of the anchor portion 25 may be welded to the adjacent side portion of the axial reinforcing bar 4.

The joining plate 24 includes a joining plate 24
A base 26 is provided to further enhance the bondability between the precast reinforced concrete column 1a and the precast reinforced concrete column 1a. This base 26 can improve the adhesion between the precast reinforced concrete earthquake-resistant wall 2 and the precast reinforced concrete column 1a in FIG. Thus, it is shown that it is buried so as to be substantially flush with the surface of the precast reinforced concrete column 1a. The burying depth of the base 26 does not necessarily have to be flush, and can be changed as appropriate within the range of the cover thickness, and as shown in FIG. It is also possible to form the accommodation groove 18a in the precast reinforced concrete column 1a.

As shown in FIG. 3, the joining plate 24 has
Further, a plate portion 27 is provided adjacent to the base portion 26 described above. In the embodiment shown in FIG. 3, it is shown that the plate portion 27 is accommodated in the groove 14a of the precast reinforced concrete shear wall 2 and forms a joint with the precast reinforced concrete shear wall 2.
The width in the wall thickness direction and the length in the horizontal direction of the plate portion 27 can be appropriately set as long as the plate portion 27 can be properly accommodated in the groove portion 14a and can provide an appropriate proof stress, similarly to the above-described scoring line 16a. . Further, the width between the precast reinforced concrete columns 1a and 1b and the precast reinforced concrete earthquake-resistant wall 2 is shown as substantially the same width in FIG. 3, but as shown in FIG.
It may be shortened in the width direction so as to form a gap as large as 3b.

FIG. 4 shows another embodiment of the joining plate 24. In the joining plate 24 shown in FIG. 4A, a reinforcing bar 28 is welded to the plate portion 27 of the joining plate 24 in the horizontal direction, and when the joining is performed with the precast reinforced concrete earthquake-resistant wall 2, the proof strength against shearing force is particularly increased. It is shown to be improved. FIG. 4A shows that the reinforcing bar 28 extends beyond the horizontal length of the plate portion 27. However, the length of the rebar 28 can be less than or equal to the horizontal length of the plate portion 27, and not all need to have the same length and shape. FIG. 4B shows that the reinforcing bar 28 has a U shape. By doing so, it is possible to simultaneously improve the proof stress against both forces, such as the shearing force and the tensile force at the time of joining. The reinforcing bar 28 shown in FIG.
May be U-shaped as shown in the figure, or may be any shape such as V-shaped. FIG.
The joining plate 24 shown in (c) is provided with an opening 29 which penetrates the plate portion 27 in the thickness direction in order to similarly improve the proof stress. Plate part 2
Although the opening 29 formed in FIG. 7 is circular in FIG. 4C, the opening 29 is not necessarily circular but may be slit in consideration of proof stress and the like. Although not shown in FIG. 4, the joining plate 24 may be composed of a plurality of joining plate segments shortened in the vertical direction. Further, although not shown in FIG. 4, the reinforcing bar 28 can be welded to the plate portion 27 along the vertical direction,
It is also possible to incline in a direction that is not horizontal to the vertical and weld to the plate portion 27.

FIG. 5 is a diagram showing a method of joining the precast reinforced concrete earthquake-resistant wall 2 of the present invention in the order of each step. In FIG. 5, a stud 16 is used as a joining member in the joining method of the precast reinforced concrete shear wall 2 of the present invention.
Although the case where a is used will be described, the same process can be used when the bonding plate 24 is used as the bonding member. In the method for joining the precast reinforced concrete earthquake-resistant wall 2 of the present invention, first, as shown in FIG. 5 (a), a column 1a provided with a stud 16a and an accommodation groove 18a is provided. Next, as shown in FIG. 5 (b), a groove portion 14a for accommodating the stud 16a is provided, and the precast reinforced concrete earthquake-resistant wall 2 having a thickness suitable for the accommodation groove 18a is precast by using a crane or the like. It is installed between the reinforced concrete column 1a and a precast reinforced concrete column 1b (not shown). After the precast reinforced concrete earthquake-resistant wall 2 is built, the precast reinforced concrete column 1a and the precast reinforced concrete earthquake-resistant wall 2 are adjacent to each other, and the accommodation groove 18a and the groove portion 14a are provided.
5c, concrete or grout 11 is cast from the upper part of the joint as shown in FIG.
The receiving groove 18a and the groove 14a are filled.

When the concrete or grout 11 hardens, a joint structure having a sufficient strength is formed between the precast reinforced concrete column 1a and the precast reinforced concrete shear wall 2, and the joining method of the present invention is completed. As described above, the gaps 23a, 23
3b, a sealing member or a sealing material can be arranged to prevent the concrete or grout 11 from leaking out.

FIG. 6 is a perspective view, partially cut away, showing the joint structure between the precast reinforced concrete column 1a and the precast reinforced concrete shear wall 2 joined by the joining method of the present invention. FIG. 6 shows a joining structure formed by using the joining plate 24 shown in FIG. 3 as a joining member. As shown in FIG. 6, a plate portion 27 is inserted into a groove portion 14a formed on a vertical end portion 3a of the precast reinforced concrete shear wall 2.
It is shown that concrete or grout 11 is cast into a gap formed between the groove 14a and the plate 27 to form a joint structure having a sufficient strength.

Although the joining between the floor slab 8 and the precast reinforced concrete earthquake-resistant wall 2 has not been particularly described so far, a cotter is provided below the precast reinforced concrete earthquake-resistant wall 2 to be used for concrete casting of the floor slab 8. The slab concrete may be used only, or the joint may be performed using a mortar or the like. Further, in the present invention, the description has been given assuming that the precast reinforced concrete earthquake-resistant wall 2 is built on the floor slab 8, but when the precast reinforced concrete earthquake-resistant wall 2 is built on the upper side of the lower floor wall instead of the floor slab 8. The present invention can also be applied to the present invention.

[0037]

According to the method for joining precast reinforced concrete shear walls of the present invention, it is not necessary to separately provide a joint formwork formed on site between the precast reinforced concrete columns and the precast reinforced concrete walls. Rationalization and labor saving can be achieved, and the amount of construction waste can be reduced. Furthermore, according to the joint structure of the precast reinforced concrete shear wall of the present invention, the joint portion of the precast reinforced concrete wall can be finished more finely than before, and thus a joint structure capable of improving the quality of the entire precast reinforced concrete wall can be provided.

[Brief description of the drawings]

FIG. 1 is a side view showing a precast reinforced concrete shear wall and a precast reinforced concrete column formed by the joining method of the present invention.

FIG. 2 is a sectional view of a bonding structure formed by the bonding method of the present invention.

FIG. 3 is a sectional view of another joining structure formed by the joining method of the present invention.

FIG. 4 is a view showing another embodiment of the joining plate used in the present invention.

FIG. 5 is a view showing each step of the bonding method of the present invention.

FIG. 6 is a partially cutaway perspective view showing a joining structure formed by the joining method of the present invention.

FIG. 7 is a view showing a precast reinforced concrete shear wall and a precast reinforced concrete column joined by a conventional joining method.

FIG. 8 is a view showing a conventional joining method using a formwork configured on site.

[Explanation of symbols]

 1, 1a, 1b: Precast reinforced concrete column 2: Precast reinforced concrete earthquake-resistant wall 3, 3a, 3b: Vertical end portion 4: Axial reinforcing bar 5: Reinforcing bar 6: Wall horizontal bar 7: Vertical bar 8: Floor slab 9: Earthquake-resistant wall End 10 ... Splice bar 11 ... Concrete or grout 12 ... Strip bar 13a, 13b ... Weir board 14, 14a, 14b ... Groove 15a, 15b ... Horizontal inner end 16a, 16b ... Bar 17a, 17b ... Separation 18a, 18b ... accommodation groove 19 ... protruding end 20 ... buried end 21 ... wall inner side surface 22 ... wall vertical streak 23a, 23b ... gap 24 ... joining plate 25 ... anchor part 25a ... protrusion 25b ... anchor part side part 26 ... base part 27 ... Plate part 28 ... Reinforcing rod 29 ... Opening

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-319147 (JP, A) JP-A-6-136858 (JP, A) JP-A-6-146438 (JP, A) JP-A-6-146438 173365 (JP, A) JP-A-7-238610 (JP, A) JP-A-9-256515 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04B 2/56-2 / 70 E04B 1/21 E04B 1/38-1/60

Claims (6)

(57) [Claims] An integrated precast reinforced concrete column having a precast reinforced concrete column provided with a joining member projecting in a horizontal direction, and a groove formed along a vertical end portion and having a width substantially between the precast reinforced concrete columns. A wall, using a hardening filler or filler, the joint member is housed in the groove, and the precast reinforced concrete shear wall between the precast reinforced concrete columns, the precast reinforced concrete column, and the precast reinforced concrete shear wall Formed on the precast reinforced concrete column between the outer surface of
To accommodate the precast reinforced concrete shear walls
The gap between the precast reinforced concrete column and the precast reinforced concrete shear wall is sealed with a sealing material or a sealing member, and the precast reinforced concrete column and the precast reinforced concrete are sealed. The precast reinforced concrete columns and the precast reinforced concrete earthquake-resistant wall are defined to face each other by using a sealing material or a sealing member to prevent leakage, and using an inner surface of the anti-shear wall facing the groove portion as a formwork. A method for joining precast reinforced concrete shear walls, wherein the filler or the filler is poured into a space. 2. The receiving groove according to claim 1 , wherein
Features housing vertical end of concrete shear wall
The method for joining precast reinforced concrete shear walls according to claim 1. Wherein the junction member, wherein one end is embedded in the precast reinforced concrete column, characterized in that there is a reinforcing bar and the other end is projected through the receiving groove
Item 4. The method for joining precast reinforced concrete shear walls according to Item 1 . 4. The joint member includes an anchor portion embedded in the precast reinforced concrete column, a base portion adjacent to the anchor portion and embedded along the circumferential direction of the precast reinforced concrete column, and a base portion adjacent to the base portion and adjacent to the precast reinforced concrete column. A plate protruding from the reinforced concrete column and housed in the groove.
The method for joining precast reinforced concrete shear walls according to claim 1 . 5. The precast reinforced concrete shear wall according to claim 4, wherein the plate portion is provided with an opening to which a reinforcing bar is welded or which penetrates in a thickness direction of the plate portion. Joining method. 6. A precast reinforced concrete column provided with a joining member projecting in a horizontal direction, and a groove extending along a vertical end portion is formed, and has a width substantially between the precast reinforced concrete columns, and
And wherein up between said precast reinforced concrete column, and the outer surface of the precast reinforced concrete shear walls
Formed on recast reinforced concrete columns,
With a ditch to accommodate the reinforced concrete shear wall
A precast reinforced concrete shear wall stood up leaving a gap to be defined, a sealing material or a sealing member for sealing the gap between the precast reinforced concrete column and the precast reinforced concrete shear wall, a curable filler or The precast reinforced concrete column, which is constructed to include a filler, and the opposing inner surface of the groove of the precast reinforced concrete shear wall is used as a formwork, and a sealing material or a sealing member is used to prevent leakage, A joint structure of a precast reinforced concrete earthquake-resistant wall in which the filler or filler is cast in a space defined between the precast reinforced concrete column and the precast reinforced concrete earthquake-resistant wall.