JP3944607B2 - Joint structure of handrail wall and floor and joint method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joining structure and a joining method in which a handrail wall such as a balcony of a building, a parapet, a corridor or a hall, and a floor are integrally joined.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, as shown in FIG. 6, a handrail wall B1 made of PCa is built in a balcony part of a building site of a building and integrated with a floor portion B2 to be hit in the field, as shown in FIG. There were some concrete joints.
[0003]
[Problems to be solved by the invention]
However, in the conventional handrail wall, since the handrail wall B1 is joined at the position of the groove portion M such as the drainage groove formed in the floor portion B2, the joining surface F has a small area and the joining strength is weak. As a result, there is a problem that cracks are liable to occur, and the internal rebar R is rusted by rainwater or the like soaked in the cracks, and the strength further decreases.
[0004]
The present invention has been made to solve the above-described conventional problems. The object of the present invention is to join a handrail wall made of PCa or made on the spot and a floor made of PCa or made on the spot. Provides a handrail wall and floor jointing structure and jointing method that can improve the strength of the wall, prevent cracks from occurring, and can effectively form grooves such as drainage grooves on the floor. There is to do.
[0005]
[Means for Solving the Problems]
The handrail wall-floor joint structure of the present invention is a joint between a handrail wall made of PCa or reinforced concrete reinforced concrete and a reinforced concrete floor part made of PCa or crushed on the spot. It is characterized by the bar arrangement. Moreover, the groove part formed in the said floor part is provided in the appropriate distance from the joint part with the said handrail wall, It is characterized by the above-mentioned. Further, the rising portion on the joining side of the groove portion formed in the floor portion is configured to be higher than the rising portion on the opposite side, and the oblique line is arranged at the rising portion on the joining side.
[0006]
The handrail wall and floor jointing method of the present invention is a construction method in which a reinforced concrete handrail wall made of PCa is built at a construction site and is concretely handed over to the floor portion to be cast on site. characterized that you fixed mounting groove for formwork reinforcing bars extending from hitting joints between wall and floor.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a handrail wall that is manufactured in advance as a PCa product in a factory or the like and built in a balcony part or the like of a building site, while 2 is a bar arrangement and concrete in the balcony part or the like of a building site. It is a floor that is struck and built.
[0008]
A joint surface 1 a is formed at the joint part at the lower part of the handrail wall 1. A cotter 1a 'is preferably formed on the joining surface 1a to improve the joining strength.
[0009]
A lower end portion of the vertical reinforcing bar 3 arranged in the handrail wall 1 extends substantially vertically from the joint surface 1a. The vertical reinforcing bars 3 may be joints that are separately arranged for jointing. An oblique line 4 extends obliquely downward from the joint portion of the handrail wall 1 toward the floor portion 2. 5 is a horizontal reinforcing bar and 6 is a tile.
[0010]
A groove portion 7 such as a drainage groove is formed in the floor portion 2. The groove portion 7 is formed at a position appropriately separated from the joint surface 1 a of the handrail wall 1 by a distance L. Of the two rising portions 7a, 7b of the groove portion 7, the rising dimension H of the rising portion 7a on the joining side is made higher than the dimension of the rising portion 7b on the opposite side, and the upper surface of the rising portion 7a on the connecting side 2a is inclined so as to be lowered toward the groove 7. With these configurations, the area of the joining surface 2b of the floor portion 2 can be further increased. 8 and 9 are reinforcing bars of the floor 2 and 10 is a seal.
[0011]
FIG. 2 shows another embodiment, in which a projecting portion 1 'is formed on substantially the upper half of the joint surface 1a of the handrail wall 1, and an overhang is formed below the projecting portion 1'. The inclined surface 1a ″ is formed, and the oblique line 4 extends substantially perpendicularly to the inclined surface 1a ″. By providing the projecting portion 1 ′, rainwater or the like becomes more difficult to enter. Further, by extending the oblique line 4 perpendicularly to the inclined surface 1a ″, the joining strength by the oblique line 4 can be further improved.
[0012]
FIG. 3 shows still another embodiment. Instead of reinforcement by the oblique bars 4, the reinforcement 11 is arranged almost in parallel with the longitudinal reinforcing bars 3, thereby simplifying the overall structure of the joining portion. It is configured to reduce costs by making it easier and easier to work.
[0013]
FIG. 4 shows a groove mold 12 for forming the groove 7 of the floor 2, and is provided below the groove mold 12 as shown in an enlarged view in FIG. A plate spring-like attachment hook 13 is elastically sandwiched between the fixed hardware 14 so that the groove frame 12 is quickly and reliably attached to the vertical rebar 3 extending from the handrail wall 1. It is a thing. The fixed hardware 14 is fixed to the vertical reinforcing bar 3 by welding or the like in the manufacturing process of the handrail wall portion 1.
[0014]
FIG. 5 is a graph showing the structural performance in each of the above-described embodiments. According to this graph, cracks do not occur when the horizontal force is 1.0 G, and the maximum strength is conventional RC (Reinforced Concrete). It can be confirmed that it is the same as the case of one-piece concrete casting. In the figure, the first embodiment has the structure shown in FIG. 1, the second embodiment has the structure shown in FIG. 2, and the third embodiment has the structure shown in FIG. Examples are shown respectively.
[0015]
In each of the above-described embodiments, the structure in which the handrail wall 1 is made into PCa and the reinforced concrete is handed over to the floor portion 2 that is cast on the site has been described. However, the handrail wall 1 is made on the site and made into PCa or on-site. The floor portion 2 may be handed over, or both may be made into PCa and handed over to each other.
[0016]
【The invention's effect】
1) By arranging oblique bars in the joint between the handrail wall and the floor, the structure became tenacious and the joint strength was improved.
2) Since a groove portion such as a drainage groove formed on the floor portion is provided at an appropriate distance from the joint portion with the handrail wall, the joint surface can be widened, and cracks are not easily generated. Rainwater etc. no longer entered.
3) By making the rising part on the joining side of the groove part of the floor part higher, it becomes possible to further widen the joining surface with the handrail wall and to easily arrange the oblique line.
4) Since the groove part formwork is attached to the rebar extending from the joint part of the handrail wall, it is possible not only to attach the formwork with precision in a factory, but also to eliminate disassembly, In addition, final floor repairs are unnecessary.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment of a handrail wall / floor jointing structure according to the present invention.
FIG. 2 is an explanatory diagram of another embodiment of the handrail wall / floor jointing structure of the present invention.
FIG. 3 is an explanatory view of still another embodiment of the handrail wall / floor jointing structure of the present invention.
FIG. 4 is a graph showing an effect of a joint structure strength of a handrail wall and a floor portion according to the structure of the present invention.
FIG. 5 is an explanatory view showing a construction example using a groove formwork.
FIG. 6 is an explanatory diagram of a conventional construction method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Handrail wall 1 'Protruding part 1a Joining surface 1a' cotter 1a "slope 2 Floor part 2a Upper surface 2b Joining surface 3 Vertical reinforcement 4 Oblique reinforcement 5 Horizontal reinforcement 6 Tile 7 Groove 7a Rising part 7b Rising part 8 Reinforcing bar 9 Reinforcing bar DESCRIPTION OF SYMBOLS 10 Seal 11 Joint 12 Groove form 13 Mounting hook 14 Fixed hardware H Rise dimension L Distance
1
Five

Claims (4)

The handrail wall and floor portion are characterized by having oblique bars arranged at the joint between the PCa-made or on-site reinforced concrete handrail wall and the PCa-made or on-site reinforced concrete floor portion . Joint structure.   The handrail wall and floor jointing structure according to claim 1, wherein the groove formed in the floor is provided at an appropriate distance from the joint with the handrail wall.   The rising part on the joining side of the groove part formed in the floor part is configured to be higher than the rising part on the opposite side, and the oblique line is arranged in the rising part on the joining side. Joint structure of handrail wall and floor. Reinforcement that extends from the joint between the handrail wall and the floor in the construction method in which the concrete-made handrail wall made of PCa is built concrete at the construction site and handed over to the concrete floor. handrail wall and hit splicing method of the floor portion, wherein fixed to installing an additional groove formwork to.

Images