JPH0579105A - Connection of precast concrete wall column - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the number of precast concrete construction parts from becoming relatively small and to simplify the reinforcement of joints. [Structure] Each precast concrete wall pillar 1 is arranged so as to face each other with an opposing space 5 in which the mutual distance between the short-side end faces 4 is approximately the thickness of the orthogonal wall 2, and is projected from the short-side end face 4. The strips 6 are arranged facing each other in the facing space 5. Then, between the tips of the stirrups 6, loop muscles 15
a are arranged in the vertical direction at intervals with a vertical line 15
The wall joint bar 15 connected to b is vertically disposed and both ends in the width direction thereof are projected outside the precast concrete wall column 1 to be interposed. Next, after vertically arranging a plurality of construction reinforcing bars 8 along the inner circumference of the front end of each stirrup 6, and connecting each construction reinforcing bar 8 with a U-shaped connecting bar, the orthogonal wall 2 is crossed by the horizontal bars 3 thereof. It is set so as to wrap with the end of the joint muscle 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining two-piece precast concrete wall columns which are preliminarily formed in a factory by dividing the cross section when joining them with orthogonal walls.

[0002]

2. Description of the Related Art When precasting reinforced concrete wall columns, cross-sectioned precast concrete wall columns are manufactured at the factory by joining with orthogonal walls and limiting the lifting weight by a lifting machine. In general, the method of assembling and in-situ concrete casting is used to integrate them.

In such a conventional method, as shown in FIG. 10, the two precast concrete wall columns 1 facing each other have the horizontal streaks 3 protruding from the facing surfaces of the orthogonal walls 2 and the precast concrete wall columns 1 of the precast concrete wall column 1. In order to join in the opposing space 5 between the short-side end faces 4, the mutual distance between the tip portions of the stirrups 6 of both precast concrete wall columns 1 was equal to or larger than the width of the transverse streaks 3 of the orthogonal wall 2.

Then, the horizontal bars 3 of the orthogonal walls 2 are inserted between the front ends of the strips 6 of the precast concrete wall columns 1, and horizontal connecting bars 7 such as loop bars are arranged on both the horizontal bars 3 in an overlapping manner. Then, a plurality of construction reinforcing bars 8 are arranged vertically through the inner circumference of the stirrup 6 and the horizontal connecting streak 7 such as a loop, and the mutual stirrup 6 is joined by a horizontal joining streak 9. Concrete 10 was placed in the facing space 5.

[0005]

However, in such a method for joining precast concrete wall columns, since the joining of the stirrups 6 is made outside the width of the orthogonal walls 2, the precast concrete construction portion is accordingly increased. There was a problem that it would be relatively small. In addition, when there is a time when the strength of the staggered stirrups 6 alone becomes insufficient due to the heightening of the building, etc., since the core muscles may be arranged in the stirrup 6, the number of reinforcing bars to be joined is There has been a problem that the number of bars increases and the bar arrangement at the joint becomes complicated.

The present invention has been made to solve the above problems, and an object thereof is to prevent the precast concrete from having a relatively small building portion,
Another object of the present invention is to provide a method for joining precast concrete wall columns that can simplify the reinforcement of the joints.

[0007]

In order to achieve the above object, a method for joining precast concrete wall columns according to the present invention comprises a two-divided precast concrete wall column facing each other at its short-side end faces. In the method for joining precast concrete wall columns that joins the orthogonal walls in a direction orthogonal to the precast concrete wall columns, in each of the precast concrete wall columns, the mutual distance between the facing surfaces is approximately the thickness of the orthogonal wall. Arranged facing each other across the opposing space, the strips protruding from the short side end face of both the precast concrete wall columns are arranged facing each other in the opposing space,
Between the tips of the stirrups, a plurality of loop streaks are arranged in the vertical direction at intervals in the vertical direction to connect wall joints connected to the vertical streaks, and both ends in the width direction of the precast concrete wall column. Protruding outside and interposing, arranging a plurality of construction reinforcing bars in the vertical direction along the inner circumference of each stirrup tip, each of the construction reinforcing bars in each stirrup with a U-shaped connecting bar respectively. The strips are joined to each other by connecting them, and the orthogonal wall is set so that the transverse ribs wrap with the ends of the wall junctions. The construction is characterized in that concrete is placed in the lap part of the.

[0008]

[Advantage] According to the above configuration, when the precast concrete wall columns are joined, the facing distances of the facing surfaces of the precast concrete wall columns are closer to each other as compared with the conventional one, so that the precast concrete construction parts are opposed to each other. You can do more.

Further, since the precast concrete wall columns can be joined to each other by means of a simple U-shaped joint, the arrangement of the joints can be simplified. Furthermore, since the horizontal ribs of the orthogonal walls are joined by simply wrapping them with a simple ladder-shaped wall joint rib using a loop or the like, the joining work of the horizontal ribs can be easily performed.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 9 show an embodiment of the present invention. In the present embodiment, as shown in FIG. 1, a ladder-shaped wall joint muscle 15 in which a large number of loop muscles 15a are arranged at intervals in the vertical direction and connected to vertical muscles 15b is used.
First, as shown in FIG. 2, two precast concrete wall columns 1 are set by a splice sleeve 11. In addition, 12 is a cotter groove provided at the end 4 on the short side of the precast concrete wall column 1, and 13 is a main bar (assembled rebar).

In this case, as shown in FIGS. 3 and 6, both precast concrete wall columns 1 are arranged opposite to each other with a facing space 5 in which the mutual spacing of the short-side end faces 4 is approximately the thickness of the orthogonal wall 2. To do. Moreover, as shown in FIG. 3, the stirrups 6 projecting from the short-side end faces 4 of both precast concrete wall columns 1 are arranged face to face in the facing space 5, and the distance between the tips of the stirrups 6 is increased. 3, the wall joint streak 15 is interposed vertically as shown in FIG. 3 so that both ends in the width direction thereof are out of the precast concrete wall column 1.

Next, as shown in FIG. 4, a plurality of construction reinforcing bars 8 are vertically arranged along the inner circumference of the front end of each stirrup 6, and as shown in FIG. The respective construction reinforcing bars 8 are joined by the U-shaped joining bars 14. Then, as shown in FIG. 6, one of the orthogonal walls 2 in the direction orthogonal to the precast concrete wall column 1 has a horizontal bar 3 with a wall joint bar 15
Set so that it wraps with the end of the.

Next, as shown in FIGS. 7 and 8, after the other orthogonal wall 2 is set so that the lateral ribs 3 thereof wrap with the ends of the wall joint muscles 15, as shown in FIG. Concrete 10 is placed in the space 5 and the transverse reinforcement 3 of the orthogonal wall 2 and the lap portion of the wall joint reinforcement 15. When the precast concrete wall columns 1 are joined in this manner, the short-side end faces 4 of the precast concrete wall columns 1 are closer to each other than in the conventional case, so that the precast concrete building portion can be relatively increased. it can. Further, since the stirrups 6 can be joined by the simple U-shaped joints 14, the arrangement of the joints can be simplified.

Further, since the transverse muscles 3 of the orthogonal wall 2 are joined by simply wrapping them with the ladder-shaped simple wall joint muscles 15 using loop muscles, the transverse muscles can be easily joined. The orthogonal wall 2 may have a structure in which only one is joined.

[0015]

EFFECTS OF THE INVENTION Since the space between the end faces on the short side of each precast concrete wall column is joined so as to form an opposing space having a thickness of a substantially orthogonal wall, the end faces on the short side of each of the precast concrete wall columns are conventionally connected. By making them closer to each other, it is possible to relatively increase the portion of the precast concrete.

Since the pre-cast concrete wall columns are joined to each other by the simple U-shaped joints, the arrangement of the joints can be simplified.

Since the transverse ribs of the orthogonal walls can be joined by simply wrapping them with a simple ladder-like wall joint using loop muscles, the joining work of the transverse muscles can be easily performed.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a wall joint muscle used in this embodiment.

FIG. 2 is a process drawing of a precast concrete wall column in this example.

FIG. 3 is a process drawing of arranging wall joint muscles in the present embodiment.

FIG. 4 is a reinforcing bar process diagram of the construction reinforcing bar in the present embodiment.

FIG. 5 is a process drawing of the arrangement of U-shaped joint muscles in the present embodiment.

FIG. 6 is a process drawing of one orthogonal wall in the present embodiment.

FIG. 7 is a process drawing of the other orthogonal wall in this embodiment.

FIG. 8 is a perspective view showing an arrangement relationship between precast concrete wall columns and orthogonal walls in the present embodiment.

FIG. 9 is a process diagram of placing concrete in the present embodiment.

FIG. 10 is a cross-sectional view showing a joined state of a conventional precast concrete wall column and an orthogonal wall.

[Explanation of symbols]

 1 Precast concrete wall column 2 Orthogonal wall 3 Horizontal reinforcement 4 Short side edge 5 Opposing space 6 Belt reinforcement 10 Concrete 11 Splice sleeve 13 Main reinforcement (assembled reinforcement) 14 U-shaped connection reinforcement 15 Wall connection reinforcement 15a Loop reinforcement 15b Vertical reinforcement

Claims (1)

[Claims] 1. A precast concrete wall column in which an orthogonal wall is joined in a direction orthogonal to the precast concrete wall column at the facing portion where the precast concrete wall column divided into two is opposed at the end face on the short side. In the joining method, each of the precast concrete wall columns is arranged so as to oppose each other with an opposing space between the precast concrete wall columns facing each other being approximately the thickness of the orthogonal wall, and projecting from the short side end faces of both the precast concrete wall columns. The stirrups are placed facing each other in the facing space, and between the tips of the stirrups, there are wall joint muscles connected to the vertical muscles with a large number of loop muscles arranged at intervals in the vertical direction. In a vertical direction, both ends in the width direction of the precast concrete wall column are protruded and intervened, and the inner circumference of each tip of the stirrups is provided. A plurality of construction rebars are vertically arranged along the arrangement, and the construction rebars in each strip are connected to each other by connecting the construction rebars with U-shaped joints, respectively, and the orthogonal wall A precast concrete wall characterized in that the horizontal bar is set so as to wrap with the end of the wall joint bar, and concrete is placed in the lap part of the horizontal bar and the wall bar of the opposing space and the orthogonal wall. How to join columns.