JPH0617607B2 - Vertical construction method of wall type PC structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a wall type PC structure, and more particularly to a wet joint type vertical jointing method.

2. Description of the Related Art Conventionally, as a vertical framing method for a PC (precast concrete) wall board, for example, as disclosed in JP-A-56-25535 and JP-B-45-24103, end faces are mutually connected. From the end faces of the two facing PC wall plates, the streak lines are respectively projected and the tip portions thereof are welded to each other, and the other two or one PC wall plate orthogonal to these PC wall plates. There was a construction method in which the joints were joined in a cross shape or a T shape, and the joint space was filled with concrete.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, the above-mentioned conventional construction method requires too many welding windows (openings) at the joint portion or requires a complicated formwork, and the post-cast joint concrete improves the appearance of the building. There was a problem such as damage.

The present invention has been made to solve the above-mentioned conventional problems, and the purpose thereof is to be able to be constructed simply and inexpensively by using a simple flat plate form frame,
Another object of the present invention is to provide a vertical joint construction method for a wall type PC structure that does not impair the appearance of the building.

[Structure of the Invention] Means for Solving the Problems Either of the end faces of the two PC wall plates whose end faces face each other, the respective streak lines are made to project, and the end portions thereof are directly welded, or In the construction method in which the PC wall plates are welded together and the other two PC wall plates orthogonal to each other are joined in a cross shape, the end faces of the PC wall plates are diagonally cut and adjacent to each other. Forming a window for welding work with the end of the PC wall plate, performing the welding work from this window, and closing the window with a flat frame when placing concrete in the joint space. Is characterized by. In addition, the end faces face each other 2
From the end faces of the PC wall plates, the streak bars are respectively projected and the tip portions thereof are directly welded to each other, or they are welded via the streak bars, and the other one is orthogonal to these PC wall plates. In a construction method of joining in a T shape with a PC wall plate, an end face of the PC wall plate is obliquely cut and a welding window is formed between the PC wall plate and an end of an adjacent orthogonal PC wall plate. The welding work is performed from this window, and the window is closed by a flat frame when placing concrete in the joint space.

Examples Hereinafter, examples of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a PC wall plate, on the vertical joint end surface of which a shear cotter 2 (see FIG. 3) is formed at appropriate intervals in the height direction. From the shear cotter 2, a loop streak 3 is provided so as to project in the vertical direction. Since the loop muscle 3 is deviated in the wall thickness direction when viewed from above, when the two PC wall plates 1 and 1 are opposed to each other at the joint portion, the loop muscle 3 is appropriately arranged as shown in FIG. They are arranged in a superposed state with a space kept.

Other PC wall plates 4 and 4 are set from the direction orthogonal to the PC wall plates 1 and 1, and are joined in a cross shape as a whole. A shear cotter 5 (see FIG. 4) is also formed on the joining end surface of the PC wall plate 4 at the same height as the shear cotter 2. As is clear from FIG. 1, the wall end surface of the shear cotter 5 portion is cut obliquely so that a welding work window 6 is formed between the PC wall plate 1 and an adjacent PC wall plate 1. ing.

From the shear cotter 5 portion, two differential streaks 7 are projected straightly, and when the two PC wall plates 4 and 4 are butted, they are projected so that the axes of both the differential streaks 7 and 7 are aligned. It is set up.

Reference numeral 8 is a reinforcing bar, which is laid out so as to penetrate through the overlapping portion of the loop bar 3 so as to be overlapped and welded to the differential bars 7, 7.

Reference numeral 9 is a longitudinal main bar, and 10 is a flat frame-shaped temporary frame, which closes the welding work window 6 when concrete is placed in the joint space.

FIG. 5 and FIG. 6 show the head joints of the PC wall boards 1 and 4, and from the head joint end faces of the PC wall boards 1 and 1,
A straight head joint bar 11 is provided so as to project, and is joined by butt welding.

7 and 8 show an example of the structure of the T-shaped vertical joint on the other end side of the PC wall board 1 shown in FIG. 1, which is formed on the joint end surface of the PC wall board 1. Sharkotter 1
A loop streak 13 is projected from the two portions, and another PC wall plate 14, 14 is butted in a direction orthogonal to the PC wall plate 1 and joined in a T-shape as a whole. A straight streak 16 is projected from the portion of the shear cotter 15 formed in the above, and the streak 16, 16 is overlapped and welded by the additional bar 17 penetrating the inside of the loop bar 13.

The shear cotter 15 is also formed by obliquely cutting the joining end face to form a welding work window 18 with the PC wall plate 1. Reference numeral 19 is a longitudinal main bar.

9 and 10 show the head portion of the T-shaped joint portion, and the head 20 having a straight head joint 20 protruding from the PC wall plate 1 and fixed to the PC wall plate 14 is shown in FIGS. It is jointed by butt welding with the joint 21.

Further, a straight head joint line 22 is also formed from the PC wall plates 14 and 14.
Are projected and butt welded to join.

11 and 12 show a structural example of the T-shaped vertical joint portion on the other end side of the PC wall plate 4 shown in FIG.

First, the left and right PC wall plates 23 joined to the PC wall plate 4,
The loop streak 25 is projected from the portion of the shear cotter 24 formed on the joint end face of 23, and is overlapped as shown in the drawing, and is projected from the portion of the sheer cotter 26 formed on the joint end face of the PC wall plate 4. The horizontal loop reinforcement 27 'welded to the differential reinforcement 27 is inserted into the overlap portion of the loop reinforcement 25 and assembled, and the longitudinal main reinforcement 28 is inserted inside the tip of the loop reinforcement 27'. I am doing it.

The shear cotter 26 is also obliquely cut out to form a window 29 for welding work.

13 and 14 show the head portion of the T-shaped joint portion, and the shear cotter 3 of the left and right PC wall plates 23, 23 is shown in FIG.
A straight head joint muscle 31 is projected from 0, and these are butt-welded and jointed.

FIGS. 15 and 16 show an example of the structure of the corner joint between the PC wall plate 14 shown in FIG. 7 and the PC wall plate 23 shown in FIG. Wall boards 14, 23
From the shear cotters 32 and 33 formed on the joint end surfaces of the above, straight streaks 34 and 35 are made to project respectively, and additional streaks 36 are superposed on these and welded integrally. Sharkotter 3 above
2 is obliquely cut out to form a welding work window 37.

FIG. 17 shows the head of the above-mentioned corner joint, and
The head splices 40 and 41 projecting from the shear cotters 38 and 39 of the wall plates 14 and 23 are butt welded and joined.

[Advantages of the Invention] (1) In a construction method of joining four PC wall plates in a cross shape,
When the end face of the PC wall plate is cut diagonally to form a welding work window between the end of the adjacent PC wall plate, and the welding work is performed from this window, and when the concrete is placed in the joint space. In addition, since the window is closed by the flat frame-shaped temporary frame, there is an advantage that the temporary frame has a simple shape, is easy to attach and detach, and can be manufactured at low cost.

(2) In the construction method of joining three PC wall plates in a T shape,
The end face of the PC wall plate is cut diagonally to form a welding work window between the end portions of the adjacent PC wall plates, which are adjacent to each other, and the welding work is performed from this window, and the concrete is placed in the joint space. Since the window is closed with a flat plate-like temporary frame when doing so, there is an advantage that the window is located inside the building and the joint portion on the outside can be thinned to make the appearance beautiful.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an embodiment of a cross-shaped joint portion of the welding device of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is an arrow in FIG. FIG. 4 is an end view seen from the direction III in FIG. 4, FIG. 4 is an end view seen from the direction IV in FIG. 1, FIG. 5 is a plan sectional view of the head of the cross-shaped joint, and FIG. Figure VI-
A sectional view taken along line VI, FIG. 7 is a plan sectional view showing an embodiment of a T-shaped joint, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 7, and FIG. 9 is its head. 10 is a plan sectional view of a portion, and FIG.
FIG. 11 is a cross-sectional view taken along line XX, FIG. 11 is a plan sectional view showing another embodiment of the T-shaped joint portion, and FIG. 12 is FIG. 11 XII-X.
Sectional view along line II, Figure 13 is a horizontal sectional view of the head,
FIG. 14 is a sectional view taken along line XIV-XIV in FIG.
The figure is a plan sectional view of the corner joint, and Fig. 16 is Fig. 15 XVI-X.
FIG. 17 is a sectional view taken along line VI, and FIG. 17 is a sectional view of a head joint portion thereof. 1,4,14,23 ... PC wall board, 2,5,12,15,24,26,30,
32,33,38,39 …… Shercotter, 3,13,25,27 ′ ……
Loop line, 6,18,29,37 ... Window for welding work, 7,16,27,
34,35 …… Differential line, 8,17,36 …… Saddle line, 9,19,28 …… Vertical main line, 10 …… Temporary frame, 11,20,21,22,31,40,41 …… Head Splice

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-56-25535 (JP, A) JP-A-53-130818 (JP, A) JP-A-51-66117 (JP, A) JP-B-45- 24103 (JP, B1) Actual public Sho 41-10350 (JP, Y1)

Claims (2)

[Claims] 1. An end face of two PC wall plates whose end faces face each other is provided with a projecting streak and the tip portions thereof are directly welded, or welded through a streak bar. In a construction method in which these PC wall plates and two other PC wall plates that are orthogonal to each other are joined in a cross shape, the end faces of the PC wall plates are obliquely cut and the end portions of adjacent PC wall plates are cut. A wall type PC structure characterized in that a window for welding work is formed between the windows, and the welding work is performed from this window, and at the time of placing concrete in the joining space, the window is closed by a flat frame-like frame. Vertical construction method. 2. The two PC wall plates whose end faces face each other are directly welded to each other by providing a differential streak from each of the end faces, or the end portions thereof are directly welded to each other, or In a construction method in which these PC wall plates are joined in a T-shape between another PC wall plate and the other orthogonal PC wall plate, the end faces of the PC wall plates are cut obliquely to form the ends of the adjacent orthogonal PC wall plates. A wall characterized by forming a welding operation window between the window and the portion, performing the welding operation from this window, and closing the window with a flat plate-like temporary frame when placing concrete in the joining space. Vertical construction method of PC structure.