JP4286463B2 - Tension material construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tension material construction method.
[0002]
[Prior art and problems]
In various technical fields including the construction field, it is sometimes necessary to construct a member such as a linear steel material by applying a predetermined magnitude of tension to the member.
[0003]
As a method of inputting tension to the tension member in such a case, conventionally, screws 51a and 51a are formed on both ends of the tension member 51 as shown in FIG. There is a method in which both ends of the tension member 51 are passed through and nuts 54 and 54 are screwed onto the end screws 51 a and 51 a of the tension member 51 outside the connecting plates 53 and 53. Alternatively, as shown in FIG. 5 (b), a turnbuckle 55 is interposed in the middle portion in the longitudinal direction of the tension member 51, and both ends of the tension member 51 are connected to the connecting portions 53, 53. There is also a method of rotating and tightening.
[0004]
For example, in these tension input methods, the magnitude of the tension input to the tension member 51 is performed by pulling the necessary extension length obtained by calculation by rotating the nut 54 or the turnbuckle 55. However, there has been a problem that it is quite troublesome in actual construction to pull the length exactly.
[0005]
In view of the above-described conventional problems, an object of the present invention is to provide a tension material construction method capable of easily pulling a tension material by a length necessary for tension input.
[0006]
[Means for Solving the Problems]
The above-mentioned problem is that the tension member is temporarily assembled in a tension-free state without loosening by interposing a pinch material having a size corresponding to the necessary extension length, and then the pinch material is removed and the tension material is removed from the pinch material. This is solved by a tension material construction method characterized by pulling until there is no gap formed by the removal.
[0007]
In this method, if the tension material is pulled until there is no gap formed by the removal of the pinching material, the tension material will be pulled by the required extension length. It is only necessary to pull the gap at a stretch without being aware of whether the tension is pulled, and the tension material can be pulled very easily by the required extension length.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0009]
In the present embodiment, a tie bar 1 as shown in FIG. 4 (a), a brace 1 as shown in FIG.
[0010]
The first embodiment shown in FIG. 1 is an enlarged view of the round chain line portion of FIGS. 4A and 4B, and the tension member 1 has an external thread at the end as shown in FIG. The male screw portion 1 a is passed through the first wall 2 a of the joint box 2, and the first nut 3 is screwed into the male screw portion 1 a in the joint box 2. Further, in this joint box 2, a bolt 4 is passed through the second wall 2 b facing the first wall 2 a so that its head is positioned in the joint box 2, and further through the connecting plate 5. The second nut 6 is screwed on the other side of the connecting plate 5.
[0011]
A plate 7 as a sandwiching material is inserted between the joint box 2 and the connecting plate 5. The sandwiching plate 7 has a thickness dimension corresponding to the necessary extension length of the tension material 1 calculated from the magnitude of the tension to be input to the tension material. The sandwiching plate 7 is provided with a notch 7a that is open to the side as shown in FIG. 1 (b) so that it can be inserted and removed from the side between the joint box 2 and the connecting plate 5. Yes. The second nut 6 screwed to the bolt 4 is screwed so as not to cause a gap between the joint box 2 and the sandwiching plate 7 and between the sandwiching plate 7 and the connecting plate 5.
[0012]
Then, the first nut 3 is screwed, and the tension member 1 is temporarily assembled in a tensionless state without loosening.
[0013]
After this state, the sandwiching plate 7 is removed as shown in FIG. 1 (C), and the second nut 6 is inserted between the joint box 2 and the connecting plate 5 as shown in FIG. 1 (D). Tighten until the gap 8 disappears. As a result, the tension material 1 is pulled by the necessary extension length, and a tension of a necessary size is input to the tension material 1.
[0014]
Thus, according to the construction method as described above, if the second nut 6 is tightened all at once until the gap 8 formed by the removal of the sandwiching plate 7 is eliminated, the tension member 1 is pulled by the necessary extension length. The tension material 1 can be easily pulled by the required extension length without having to be aware of how much length is currently pulled during the pulling.
[0015]
In the second embodiment shown in FIG. 2, as shown in FIG. 2 (b), the tension material is composed of two channel steels 1 and 1, and these channel steels 1 and 1 are arranged on the groove opening side. The leg plates 9a of the joint tee 9 are sandwiched so as to face outward, and are joined to the joint tee 9 by bolts or welding. Then, as in the case of the first embodiment, the bolt 4 is placed on the shoulder plate 9b of the joint tee 9 so that its head is positioned on the inner surface side of the shoulder plate 9b as shown in FIG. Through the shoulder plate 9b, through the connecting plate 5, and screwed onto the nut 6 on the other side of the connecting plate 5.
[0016]
As in the case of the first embodiment, a plate 7 as a sandwiching material is inserted between the joint tee 9 and the connecting plate 5. The sandwiching plate 7 has a thickness dimension corresponding to the necessary extension length calculated from the magnitude of the tension to be input to the channel steels 1 and 1, and the nut 6 screwed into the bolt 4 is shown in FIG. As shown in FIG. 2A, the screw is screwed to such an extent that no gap is generated between the joint tee 9 and the sandwiching plate 7 and between the sandwiching plate 7 and the connecting plate 5. The channel steels 1 and 1 are temporarily assembled in a tension-free state without looseness.
[0017]
After this state, the sandwiching plate 7 is removed as shown in FIG. 2 (b), and the nut 6 is placed between the joint box 2 and the connecting plate 5 as shown in FIG. 2 (d). Tighten until 8 disappears. As a result, each of the channel steels 1 and 1 is pulled by the necessary extension length, and a tension of a required size is input, and the tension of the channel steels 1 and 1 by the required extension length is obtained. The construction can be easily performed as in the above case.
[0018]
In the third embodiment shown in FIG. 3, as shown in FIG. 3 (b), the tension material is made of one H-section steel 1, and an end plate 10 is welded to the end of the H-section steel 1. It is attached with. Then, as shown in FIG. 3 (a), the bolt 4 is placed on the end plate 10 so that its head is positioned on the inner surface side of the end plate 10 as in the first and second embodiments. It passes through the plate 9 b, further passes through the connecting plate 5, and is screwed with the nut 6 on the other side of the connecting plate 5.
[0019]
Between the end plate 10 and the connecting plate 5, as in the first and second embodiments, a plate 7 as a sandwiching material is inserted. The pinch plate 7 has a thickness dimension corresponding to the necessary extension length calculated from the magnitude of the tension to be input to the H-section steel 1, and the nut 6 screwed into the bolt 4 is shown in FIG. As shown in (a), the screw is screwed to such an extent that no gap is generated between the end plate 10 and the sandwiching plate 7 and between the sandwiching plate 7 and the connecting plate 5. The H-section steel 1 is temporarily assembled in a tension-free state without looseness.
[0020]
After this state, the sandwiching plate 7 is removed as shown in FIG. 3 (b), and the nut 6 is moved between the joint box 2 and the connecting plate 5 as shown in FIG. 3 (d). Tighten until 8 disappears. As a result, each H-section steel 1 is pulled by the necessary stretch length, and a tension of a necessary magnitude is input, and the tension by the necessary stretch length with respect to the H-section steel 1 is applied as described above. Similarly, construction can be easily performed.
[0021]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the case where a steel rod, a grooved steel, an H-shaped steel, or the like is used as the tension material is shown, but there is no particular limitation on the material, shape, number, etc. It may be used for material tension input. Further, the tension material is not limited to screws, and may be performed by various methods.
[0022]
【The invention's effect】
Since the present invention is as described above, the tension material can be easily pulled by the length necessary for the tension input.
[Brief description of the drawings]
FIG. 1 shows a construction method according to the first embodiment. FIGS. (A), (C) and (D) are front views of main parts sequentially showing the construction method, and FIG. It is a perspective view.
FIG. 2 shows a construction method according to the second embodiment. FIGS. (A), (B), and (D) are front views of main parts sequentially showing the construction method, and FIG. It is an II sectional view taken on the line of FIG.
FIGS. 3A and 3B show a construction method according to a third embodiment. FIGS. (A), (B), and (D) are front views of main parts sequentially showing the construction method, and FIG. It is a sectional view taken along the line II-II in FIG.
FIGS. 4A and 4B are front views showing an application example of a tension material, respectively.
FIGS. 5A and 5B are front views showing a conventional construction method, respectively.
[Explanation of symbols]
1. Tension material (steel bar, channel steel, H-section steel)
7 ... sandwiching plate
8 ... Gap

Claims (1)

A tension member is temporarily assembled in a tension-free state without loosening by interposing a pinch material having a dimension corresponding to a necessary extension length, and then the pinch material is removed and the tension material is formed by removing the pinch material. A tension material construction method characterized by pulling until the gap disappears.

Images