JPH0742231A - PCa concrete wall pillar - Google Patents

Abstract

(57) [Abstract] [Purpose] PCa concrete column wall single plate is crimped by the interlocking joint with uneven cotter and the prestressing force of PC steel rod to improve the joint performance, reliability and workability. Located in providing concrete wall columns. [Structure] PCa in which reinforcing bars 2, 2a and 2b are embedded vertically and horizontally
Concrete wall pillar veneers 1,11,21 side surface joints with uneven cotters 3, 13, 23, horizontal and vertical reinforcing bars 6, 6
Other PCa concrete wall column single plates 5, 15 and 25 with a and 6b embedded end face joints 7 and 1 with uneven cotters
7 and 27 are engaged and brought into contact with each other and filled with grout G,
A series of insertion sheaths 4, 14, 24 penetrating the side and end face joints of both PCa concrete wall column single plates
Insert the PC steel material 9 into 8, 18, and 28 and tighten and fix it 9a
It is characterized in that it is crimped and joined to a cross shape, a T shape, or an L shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PCa concrete wall column in which a plurality of PCa concrete wall column veneers are crimped and joined in a cross shape, a T shape or an L shape.

[0002]

2. Description of the Related Art A conventional PCa concrete wall column is constructed by, for example, embedding vertical streaks f and lateral streaks e in PCa concrete veneers a and b manufactured by dividing them as shown in FIG. To form a large number of horizontal streaks e, the PCa concrete veneers a and b are arranged in a cross shape as shown in the drawing, and the hollow portion S defined by each joint end face is used as a joint portion to form the inside thereof. A vertical column g is placed on the wall and concrete C is cast to form an integrated wall pillar structure R.

[0003]

In the conventional PCa concrete wall column, as described above, the horizontal streaks are projected in the joint portion of the hollow portion defined by the respective joint end faces, and the longitudinal streaks are arranged, so that the site construction method should be adopted. However, there are problems such as time-consuming work, the accuracy of construction is likely to deteriorate, and horizontal and vertical bars intersect within the joint, resulting in insufficient adhesion between the concrete and the reinforcing bars.

The present invention was developed in order to solve the above-mentioned problems, and the purpose thereof is to make a PCa concrete by interlocking joints by an uneven cotter and adding a prestressing force by a PC steel material. A PC with crimped wall post veneer to improve joint performance, reliability and workability
a) Providing concrete wall columns.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a concavo-convex pattern of a PCa concrete wall column veneer in which longitudinal and lateral reinforcing bars are embedded, and a concavo-convex pattern of another PCa concrete wall column veneer in which longitudinal reinforcing bars are embedded in the side joint portion with a cotter. The end joints with cotters are meshed and abutted to fill the grout, and the PC steel material is inserted into the series of insertion sheaths penetrating the side joints and end joints of both PCa concrete wall column single plates, and the tension is fixed. By crimping and joining in a transverse cross shape, T-shape, or L-shape, a plurality of PCa concrete wall pillar single plates are crimped to improve joint performance, reliability, and workability.

[0006]

Operation: The end joints with concave and convex cotters are engaged with and abutted against the side joints with concave and convex cotters of a plurality of PCa concrete wall column single plates, and grout is filled between them to form a series of insertion sheaths with PC steel material. Tension, crimp, and fix through the cross, cross-shaped, T-shaped or L-shaped P
It is easily joined to Ca concrete wall columns, and between each PCa concrete wall column single plate is assembled with high precision by interlocking joints with concave and convex cotters, vertical deviation is effectively prevented, and it is prestressed by PC steel material. It is crimped into an integral bond with toughness, prevents brittle shear fracture, secures the desired joint strength, and has excellent seismic resistance. It will be built on top and the on-site construction will be carried out smoothly.

[0007]

1 shows a first embodiment of the present invention, FIG. 2A shows a second embodiment, and FIG. 2B shows a third embodiment. In FIG. 1, 1 and 5 are PCa concrete wall pillar veneers pre-manufactured in factories and the like, and the PCa concrete wall pillar veneers 1 are reinforcing bars (longitudinal main bars 2, vertical buried bars 2 and 3) buried vertically and horizontally as illustrated.
A vertical plate 2a and a horizontal bar 2b) are reinforced to form a single plate material having an appropriate thickness, and a side surface joint portion 3 with an uneven cotter (a convex shape in the illustrated example) is provided at the center of both side surfaces. A PC steel material 9 is inserted in the central portion thereof in advance so as to be oriented in the joining direction, and a plurality of the insertion sheaths 4 are arranged at appropriate vertical intervals (see FIG. 1B).
The Ca concrete wall pillar veneer 5 is reinforced by reinforcing bars (longitudinal main bar 6, vertical bar 26, horizontal bar 6b) embedded vertically and horizontally to be formed into a veneer material having an appropriate thickness and a required length, An end face joint portion 7 having a concave-convex cotter (a concave shape in the illustrated example) is provided on the end face, and an insertion sheath 8 of PC steel material 9 is pierced through the center portion of the end face joint portion so as to be oriented in the joining direction. A plurality of 8 are arranged at appropriate vertical intervals (see FIG. 1B). Further, as the PC steel material 9, a PC steel rod, a PC steel wire, a PC strand, and a reinforcing bar are applied. In the figure, 5a is an anchor hole formed at the end of the PCa concrete wall pillar single plate 5, and 9a is a fixing portion (anchor) of the PC steel material 9.
Indicates. The sheath 4 and the PC steel material 9 are not limited to the illustrated example, but may be arranged in various ways.

In the first embodiment shown in FIG. 1, PCa concrete wall pillar veneers 1 are meshed and joined to the central portions on both sides of the PCa concrete wall pillar veneer 1 to form a cross-shaped cross P type.
This is an example of constructing a Ca concrete wall column, and a side joint 3 with concave and convex cotters provided on both sides of a PCa concrete wall column veneer 1 in which longitudinal and lateral reinforcing bars 2, 2a, 2b are embedded.
Another PCa concrete wall pillar veneer 5 in which reinforcing bars 6, 6a, 6b are embedded vertically and horizontally, and an end face joint portion 7 with an uneven cotter
Of the PCa concrete wall pillar veneers 1, 5, 5 and a series of insertion sheaths 4, 8 and 8 penetrating the side joints 3 and end joints 7, 7 of the PCa concrete wall column single plates 1, 5, 5
A PCa concrete wall pillar 10 is formed by inserting a PC steel material 9 into the above and tensioning it 9a, and then crimping and joining it in a cross shape. After inserting the PC steel material 9 into the insertion sheath and tensioning it, grout is injected into the sheath as necessary.

The above PCa concrete wall pillar 10 is made of P
Ca concrete wall pillar veneer 1 P on each side center part
Ca concrete wall pillar veneers 5 and 5 are formed by cross-joining by interlocking them, and the PCa concrete wall pillar veneers 1 and 5 are easily precast as veneer materials having the above-mentioned structure for transportation and work. It can be easily carried into the construction site, and at the construction site, it can be easily engaged and joined to the cross-shaped PCa concrete wall pillar 10 as described above. That is, a series of insertion sheaths inserted through the PCa concrete wall pillar veneers 1, 5 and 5 with the side joints 3 with concave-convex cotters and the end-face joints 7 with concave-convex cotters filled and abutted and pierced. PC steel material 9 is inserted into 4, 8 and 8 and tightened to fix 9a, and easily interlocked and joined. Each PCa concrete wall pillar single plate 1, 5 and 5 is assembled with high accuracy by interlocking joint with uneven cotter. And the vertical deviation is effectively prevented, and the PC steel material 9 is pressure-bonded by the prestressing force to form an integral bond with toughness, brittle shear fracture is prevented, and desired bonding strength is secured. Earthquake resistance is obtained.

The PCa concrete wall pillar 10 assembled and joined as shown in FIG. 1 is built on a foundation, and a beam and a floor slab are erected and built on the upper part thereof, and further built on the floor slab. In this way, on-site construction is easily performed and the construction period is shortened.

The second embodiment shown in FIG. 2 (A) is a transverse T-shaped PCa concrete wall column in which a PCa concrete wall column single plate 15 is intermeshed and joined to the center of the side surface of the PCa concrete wall column single plate 11. Another example of the PCa concrete wall in which reinforcing bars (not shown) are vertically and horizontally embedded in the side joints 13 with concave and convex cotters of the PCa concrete wall pillar veneer 11 in which reinforcing bars (not shown) are vertically and horizontally embedded. A series of insertions formed through the side surface joints 13 and end surface joints 17 of the PCa concrete wall pillar single plates 11 and 15 by meshing and contacting the end face joints 17 with concave and convex cotters of the pillar single plate 15 and filling them with grout G. A PCa concrete wall post 20 is obtained by inserting the PC steel material 9 into the universal sheaths 14 and 18 and tensioning it to fix it 9a, and crimping and joining it in a transverse T shape.

Further, the third embodiment shown in FIG.
In this embodiment, a PCa concrete wall pillar veneer 25 is engaged and joined to a side end of the Ca concrete wall pillar veneer 21 to form a transverse L-shaped PCa concrete wall pillar.
With PCa concrete wall pillar veneer 21 with vertical and horizontal reinforcing bars embedded in the side-joint 23 with concave and convex cotters, another PCa concrete wall pillar single plate 25 with vertical and horizontal reinforcing bars (not shown) embedded The end face joints 27 are engaged and brought into contact with each other to be filled with grout G, and a series of insertion sheaths 24, 12 penetrating the side face joints 23 and end face joints 27 of the PCa concrete wall column single plates 21, 25 are inserted into the insertion sheaths 24, 12.
The PCa concrete wall column 30 is made by inserting the C steel material 9 into the PCa concrete wall column 30 and tensioning it to fix it 9a, and crimping it into an L-shaped cross section.

PCa of the above-mentioned second and third embodiments
The concrete wall columns 20 and 30 are engaged and joined in a T-shaped section or an L-shaped section as shown in FIGS. Are assembled with high precision, vertical displacement is effectively prevented, and they are pressure-bonded by the prestressing force of PC steel material to form an integral bond with toughness,
Basically the same action as the first example, such as brittle shear fracture prevention, desired joint strength is secured, excellent earthquake resistance is obtained, on-site construction is easily performed and construction period is shortened, The effect is obtained. Further, unlike the conventional example, the reinforcing bar does not project to the joint end face, the construction accuracy is good, and construction management is easy. Furthermore, simply by injecting grout into the joint, it is not necessary to fill the reinforcing bar or concrete, and the cost can be reduced.

[0014]

As described above, according to the present invention, the plurality of PCa concrete wall column single plates are provided with the side joints with concave-convex cotters and the end-face joints with concave-convex cotters, which are brought into contact with each other and filled with grout to be penetrated. PC in a series of inserted sheaths
The steel material is inserted and tensioned and fixed, and it is easily meshed and joined to transverse cross-shaped, T-shaped or L-shaped PCa concrete wall columns. Precisely assembled and effectively prevented from shifting in the vertical direction, it becomes an integral bond with toughness by crimping with prestressing force of PC steel material, brittle shear fracture is prevented and desired bond strength is secured. And excellent seismic resistance are obtained, the joint performance and reliability of PCa concrete wall columns joined by interlocking are effectively enhanced, and they can be easily built on foundations or floor slabs to easily and smoothly perform on-site construction. This has the effect of significantly shortening the construction period.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view (A) showing the first embodiment of the present invention and its XX sectional view (B).

FIG. 2 is a plan view showing a second embodiment (A) and a plan view showing a third embodiment (B).

FIG. 3 is a cross-sectional plan view showing a conventional example.

[Explanation of symbols]

1,11,21 PCa concrete wall pillar veneer 2,2a, 2b Reinforcing bar 3,13,23 Side joint with uneven bumper 4,14,24 Insertion sheath 5,15,25 Other PCa concrete wall pillar veneer 6 , 6a, 6b Reinforcing bar 7, 17, 27 End face joint with uneven bumper 8, 18, 28 Sheath for insertion 9 PC steel material (PC steel rod, PC steel wire, P
C Strand, reinforcing bar) 9a Anchoring part (anchor) 10,20,30 PCa Concrete wall pillar

Claims (1)

[Claims] 1. A PCa concrete wall column veneer single plate with vertical and horizontal reinforcing bars embedded in a side joint with concave and convex cotters, and another PCa concrete wall column single plate in which vertical and horizontal reinforcing bars are embedded with concave and convex end face joints. Abutting and filling with grout, PC steel material is inserted into a series of insertion sheaths penetrating the side joints and end joints of both PCa concrete wall column veneers, tensioned and fixed, transverse cross shape, T-shape PCa concrete wall column characterized by being crimped and joined to a mold or L-shape.