JPH0586663A - Jointing method of precast concrete wall pillar - Google Patents

Abstract

PURPOSE:To prevent the part of precast concrete from relatively decreasing, and simplify the arrangement of reinforcing bars at the jointing part due to the restriction effect of a crossed wall. CONSTITUTION:Respective precast concrete wall pillars 1 are arranged so that hoops 6 protruding from the end faces 4 of respective shorter sides are confronted to each other at the opposite space 5 forming the thickness of a crossed wall 2. And after a plurality of vertical reinforcements 8 are perpendicularly arranged to pierce the hoops along the inner periphery at the front edge of the respective hoops and the respective vertical reinforcements 8 are jointed by U-shaped jointing rods 14 in mutual respective hoops 6, the lateral reinforcements 3 of the crossed wall 2 are connected by jointing rods 15 passing through this opposite space at the outside of the opposite space 5.

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 precast concrete wall columns.

[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. 21, two precast concrete wall columns 1 facing each other have a horizontal streak 3 projecting from the facing surface of the orthogonal wall 2 and the precast concrete wall column 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 wall 2 are inserted between the tips of the stirrups 6 of these precast concrete wall columns 1, and the loop horizontal connecting streaks 7 are arranged on both of the horizontal streaks 3 so as to overlap the strips. A plurality of vertical streaks 8 are arranged vertically through the inner circumference of the streak 6 and the loop horizontal connecting streak 7, and the horizontal stirrup 9 is used to connect the respective stirrup 6 to the concrete 10 in the facing space 5. Was being placed.

[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 its purpose is to simplify the arrangement of joints by the restraining effect of orthogonal walls and to construct precast concrete. It is an object of the present invention to provide a method for joining precast concrete wall columns that can prevent the relative decrease in the amount.

[0007]

In order to achieve the above object, a method for joining precast concrete wall columns according to the present invention is such that two divided precast concrete wall columns face each other with their short-side end faces facing each other. In the part, in the joining method of the precast concrete wall columns that joins the orthogonal walls in the direction orthogonal to the precast concrete wall columns, each of the precast concrete wall columns is a strip protruding from both the short side end faces. Muscle
Arranged so as to face each other in the opposing space that is the thickness of the orthogonal wall, a plurality of vertical stripes vertically arranged along the inner circumference of each stirrup tip, and each of the vertical stripes in each stirrup. The respective stirrups are connected to each other by connecting the muscles with U-shaped connecting muscles, and the horizontal stripes protruding from the facing surfaces of the orthogonal walls are connected to each other through the inside of the facing space outside the facing space. After connecting and joining each other, concrete is poured into the facing space and the connecting portion of the connecting bar and the lateral bar.

According to a second aspect of the present invention, there is provided a method for joining precast concrete wall columns, in which the precast concrete wall columns divided into two parts are opposed to each other at their facing portions facing each other at their short-side end faces. In the method of joining precast concrete wall columns that are connected in a direction orthogonal to the columns, in each of the precast concrete wall columns, the streak protruding from both short side end faces is the thickness of the orthogonal wall. Along the inner circumference of the distal end of each stirrup, which is arranged so as to face each other in the facing space, and the eye-shaped horizontal joints are arranged across the respective stirrups, and the eye-shaped horizontal joints are overlapped. Joining each of the stirrups with each other by arranging a plurality of vertical streaks penetrating in the vertical direction, a horizontal streak protruding from the facing end faces of the orthogonal walls, A structure characterized in that concrete is placed in the facing space and the connecting portion of the connecting bar and the horizontal bar after connecting and connecting the connecting bars passing through the inside of the facing space to each other outside the facing space. Is to

Further, in the method for joining precast concrete wall columns according to the third aspect, the precast concrete wall columns divided into two parts are the orthogonal parts in which the orthogonal walls are made to face each other at the end portions facing each other on the short side end faces. In the method of joining precast concrete wall columns that are connected in a direction orthogonal to the columns, in each of the precast concrete wall columns, the streak protruding from both short side end faces is the thickness of the orthogonal wall. While arranging so as to face each other in the facing space, the square-shaped horizontal connecting muscles are arranged so as to straddle each other of the respective stirrups, and the inner circumference of the tip corner portion of each stirrup and the square-shaped horizontal connecting muscles are overlapped. After vertically arranging a plurality of vertical stripes along the inner circumference of each of the stirrups, each of the vertical stripes in each of the stirrups is formed by a U-shaped joint. The respective stirrups are joined to each other by being connected to each other, and the lateral stirrups protruding from the facing end faces of the orthogonal walls are joined to each other by being joined to the connecting stirrups passing inside the facing space outside the facing space. After that, concrete is poured into the facing space and the connecting portion of the connecting bar and the horizontal bar, which is a feature.

[0010]

As described above, according to the constructions of claims 1, 2, and 3, 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 than in the conventional case. , It is possible to relatively increase the number of parts built with precast concrete.

Further, according to the structure of claim 1, the mutual reinforcement of the precast concrete wall columns can be connected by the simple U-shaped connecting bar due to the restraining effect of the orthogonal wall, so that the bar arrangement of the connecting portion is simplified. be able to. Moreover, according to the structure of Claim 2, since the mutual reinforcement | strengthening of a precast concrete wall column can be joined by a comparatively simple eye-shaped horizontal joint reinforcement by the restraint effect of an orthogonal wall, the reinforcement of a joint part is simplified. be able to. Further, according to the structure of claim 3, the restraint effect of the orthogonal wall enables the joints between the precast concrete wall columns to be connected to each other by the relatively simple square-shaped horizontal joints and U-shaped joints. The muscle can be simplified.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 8 show a first embodiment of the present invention. First, as shown in FIG. 1, two precast concrete wall columns 1 are attached to a splice sleeve 12
Set by. In addition, 18 is a cotter groove provided in the end face 4 on the short side of the precast concrete wall column 1, and 13 is an assembled rebar.

In this case, as shown in FIG. 2 and FIG. 4, both precast concrete wall columns 1 are provided with strips 6 projecting from the end face 4 on the short side of both precast concrete wall columns 1 to the orthogonal wall 2. The vertical spaces 8 are arranged so as to face each other in the facing space 5 having a thickness of 1, and a plurality of vertical stripes 8 are vertically penetrated along the inner circumference of the distal end portion of each strip 6.

Next, as shown in FIG. 3, the vertical reinforcements 8 in the respective reinforcements 6 are connected by U-shaped connection reinforcements 14 and, as shown in FIG. 4, they are orthogonal to the precast concrete wall columns 1. One orthogonal wall 2 in the facing direction is set by the splice sleeve 12, and the opposite orthogonal wall 2 is set in the same manner.
In addition, the horizontal line 3 of the one orthogonal wall 2 is joined by the connecting line 15.

Next, as shown in FIG. 6 to FIG. 8, after the horizontal ribs 3 of the other orthogonal wall 2 are joined by the connecting ribs 15, as shown in FIG. Concrete 10 is poured into 3. 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 joint 14 due to the effect of restraining the orthogonal wall 2, the arrangement of the joints can be simplified.

9 to 14 show a second embodiment of the present invention. First, as shown in FIG. 9, the two precast concrete wall columns 1 are set by the splice sleeve 12 so that the short-side end faces 4 face each other. Also in this case, as shown in FIGS. 10 and 11, both the precast concrete wall columns 1 have the stirrup 6 projecting from the short-side end face 4 of both the precast concrete wall columns 1 of the orthogonal wall 2. They are arranged so as to face each other in the facing space 5 having a thickness, and the eye-shaped horizontal joints 16 are arranged so as to straddle the respective stirrups 6.

Next, as shown in FIG. 11, a plurality of vertical streaks 8 are vertically arranged along the inner circumference of the distal end of the stirrup 6 in the eye-shaped horizontal joint bar 16, and the precast concrete wall column 1 is also provided. One of the orthogonal walls 2 oriented orthogonally to is set by the splice sleeve 12 as shown.

Then, as shown in FIG. 12, the transverse bar 3 of one orthogonal wall 2 is joined by the connecting bar 15, and the other orthogonal wall 2 is also set as shown in FIGS. The transverse muscles 3 of the orthogonal wall 2 are joined by the connecting muscles 15.

Next, as shown in FIG. 14, concrete 10 is poured into the facing space 5 and the lateral streaks 3 of each orthogonal wall 2. Also in this case, since the concrete thickness end faces 4 of the precast concrete wall columns 1 are closer to each other than in the conventional case, the precast concrete portion can be relatively increased. Further, since the stirrups 6 can be joined by the comparatively simple eye-shaped joints 17 due to the restraint effect of the orthogonal walls 2, the arrangement of the joints can be simplified. In addition,
The orthogonal wall 2 may have a structure in which only one side is joined.

15 to 20 show a third embodiment of the present invention. First, as shown in FIG. 15, two precast concrete wall columns 1 are set by a splice sleeve 12 so that the short-side end faces 4 face each other. Also in this case, as shown in FIG. 16 and FIG. 17, both precast concrete wall columns 1 are opposed spaces 5 in which the stirrups 6 protruding from both short side end faces 4 become the thickness of the orthogonal wall 2. Are arranged so as to face each other, and the square-shaped horizontal joints 17 are arranged so as to straddle each of the stirrups 6.

Next, as shown in FIG. 17, a plurality of vertical streaks 8 are vertically arranged along the inner circumference of the tip corners of the respective stirrups 6 and the inner circumference of the front end of the stirrups 6 within the square-shaped horizontal connecting bar 17. After placing through
The vertical streaks 8 in each stirrup 6 are respectively connected by a U-shaped joint streak 14, and one orthogonal wall 2 in a direction orthogonal to the precast concrete wall column 1 is spliced with a splice sleeve 12.
To set as shown.

Then, as shown in FIG. 18, the transverse ribs 3 of one of the orthogonal walls 2 are joined by the connecting ribs 15, and the other orthogonal wall 2 is set as shown in FIGS. The transverse muscles 3 of the orthogonal wall 2 are joined by the connecting muscles 15.

Next, as shown in FIG. 20, concrete 10 is poured into the facing space 5 and the lateral streaks 3 of each orthogonal wall 2. Also in this case, since the concrete thickness end faces 4 of the precast concrete wall columns 1 are closer to each other than in the conventional case, the precast concrete portion can be relatively increased. Further, since the stirrups 6 can be joined by the relatively simple rectangular horizontal joints 17 and the U-shaped joints 14 due to the restraint effect of the orthogonal walls 2, the arrangement of the joints can be simplified. The orthogonal wall 2 may have a structure in which only one is joined.

[0024]

[Effects of the Invention] By joining the mutual spacing between the stirrups projecting from the end face on the short side side of the precast concrete wall column so that they are opposed to each other with a thickness almost equal to that of the orthogonal walls,
Since the facing intervals of these precast concrete wall columns are closer to each other than in the conventional case, it is possible to relatively increase the number of precast concrete construction parts.

Since the stirrups are connected to each other by a simple U-shaped joint, a square horizontal joint or a square horizontal joint and a U-shaped joint due to the effect of restraining the orthogonal wall, the arrangement of the joints is Can be simplified.

[Brief description of drawings]

FIG. 1 is a process drawing of a precast concrete wall column according to the first embodiment of the present invention.

FIG. 2 is a process drawing of vertical bar arrangement in the first embodiment.

FIG. 3 is a process drawing of the arrangement of the U-shaped connecting muscle in the first embodiment.

FIG. 4 is a set process drawing of one orthogonal wall in the first embodiment.

FIG. 5 is a process drawing of joining one orthogonal wall and the other orthogonal wall in the first embodiment.

FIG. 6 is a process drawing of joining the other orthogonal wall in the first embodiment.

FIG. 7 is a perspective view showing a positional relationship between precast concrete wall columns and orthogonal walls in the first embodiment.

FIG. 8 is a cross-sectional view showing a state where joining of the precast concrete wall column and the orthogonal wall in the first example is completed.

FIG. 9 is a process drawing of a precast concrete wall column in the second embodiment of the present invention.

FIG. 10 is a process drawing of a bar-shaped horizontal joint bar in a second embodiment.

FIG. 11 is a process drawing of a vertical bar arrangement process and one orthogonal wall in the second embodiment.

FIG. 12 is a process drawing of joining one orthogonal wall and another orthogonal wall in the second embodiment.

FIG. 13 is a process drawing of joining the other orthogonal wall in the second embodiment.

FIG. 14 is a transverse cross-sectional view showing a state where joining of the precast concrete wall column and the orthogonal wall in the second example is completed.

FIG. 15 is a process drawing of a precast concrete wall column in the third embodiment of the present invention.

FIG. 16 is a process drawing of a bar-shaped horizontal joint bar in a third embodiment.

FIG. 17 is a process drawing of a vertical bar arrangement process and one orthogonal wall in the third embodiment.

FIG. 18 is a process drawing of joining one orthogonal wall and another orthogonal wall in the third embodiment.

FIG. 19 is a process drawing of joining the other orthogonal wall in the third embodiment.

FIG. 20 is a cross-sectional view showing a state where joining of the precast concrete wall column and the orthogonal wall in the third example is completed.

FIG. 21 is a transverse 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 8 Vertical reinforcement 9 Horizontal joint reinforcement 10 Concrete 11 Main reinforcement 12 Splice sleeve 13 Assembly reinforcement 14 C-shaped connection reinforcement 15 Connection reinforcement 16 Horizontal shape Junction muscle 17 R-shaped horizontal junction muscle

Claims (3)

[Claims] 1. A precast concrete wall column in which a precast concrete wall column divided into two parts joins orthogonal walls in a direction orthogonal to the precast concrete wall column at the facing portions facing each other at the end face on the short side. In the joining method, the precast concrete wall columns are arranged so that the strips protruding from both the short-side end faces of both are arranged to face each other in the facing space that is the thickness of the orthogonal walls, and the strips. A plurality of vertical streaks are vertically arranged along the inner circumference of the tip, and the respective vertical streaks in the respective stirrups are joined to each other by connecting the respective vertical streaks with a U-shaped joining streak. After connecting the lateral ribs protruding from the facing surfaces of the orthogonal walls to the connecting muscles passing through the inside of the facing space outside the facing space and joining them, the facing space and the connecting muscles and A method for joining precast concrete wall columns, characterized in that concrete is placed at the joints between the horizontal and horizontal bars. 2. A precast concrete wall column in which two divided precast concrete wall columns connect the orthogonal walls in a direction orthogonal to the precast concrete wall columns at their facing portions facing each other at the short-side end faces. In the joining method, each of the precast concrete wall columns, the stirrups projecting from both the short-side end face, is arranged so as to face each other in the facing space that is the thickness of the orthogonal walls, and each stirrup. By arranging the eye-shaped horizontal joints over each other, and by arranging a plurality of vertical muscles in the up-down direction along the inner circumference of the ends of the respective stirrups on which the eye-shaped horizontal joints are superposed, The stirrups are joined to each other, and the lateral streaks projecting from the end faces facing each other of the orthogonal walls are joined to each other by connecting them to the connecting muscles passing inside the facing space outside the facing space. After that, concrete is placed in the facing space and the connecting portion of the connecting bar and the horizontal bar, and the precast concrete wall column is joined. 3. A precast concrete wall column in which a precast concrete wall column divided into two parts is connected to the orthogonal wall in a direction orthogonal to the precast concrete wall column at its facing portion facing each other at the end face on the short side. In the joining method, each of the precast concrete wall columns, the stirrups projecting from both the short-side end face, is arranged so as to face each other in the facing space that is the thickness of the orthogonal walls, and each stirrup. Arranging a square-shaped horizontal connecting muscle across each other, and a plurality of vertical lengths along the inner circumference of each corner corner of each stirrup and the inner circumference of each distal end of each stirrups on which the square horizontal connecting muscle is overlapped. After arranging the muscles in the vertical direction, the vertical muscles in each of the vertical muscles are connected to each other by U-shaped connecting muscles so that the respective vertical muscles are connected to each other, and the orthogonal walls face each other. After connecting the horizontal bar protruding from the end face to the connecting bar that passes through the facing space outside the facing space and joining them to each other, concrete is struck on the facing space and the connecting part of the connecting bar and the horizontal bar. A method for joining precast concrete wall columns, characterized by being installed.