JPS6183757A - Method and metal fitting for supporting pc steel wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for supporting a PC steel wire, etc., and a support fitting for properly arranging an unbonded C steel wire, etc. within a beam.

Conventional technology In the past, when placing PCgA wires etc. inside a beam, most of them involved inserting and arranging bar-shaped steel wire spacers on the bottom of the beam form to support them, or using stirrup bars to support them. This is a method of supporting by welding it to the muscle.

Problems and Purposes to be Solved by the Invention Accordingly, in both cases, reliable construction accuracy cannot be obtained, and work efficiency is significantly reduced.

This invention was made in view of the above-mentioned conventional problems, and its purpose is to accurately and rationally support PA steel wires, etc. placed inside beams, thereby improving workability and providing excellent advantages. It is an object of the present invention to provide a method for supporting PC steel wires, etc., and a supporting metal fitting that are effective.

Structure of the Invention The method for supporting PC steel wires, etc. according to the present invention involves attaching hook-shaped hook-like hooks on both sides of the upper end of a beam reinforcing bar assembly that has been assembled in advance to a required size, or to the abdominal reinforcement near the middle. , a generally mouth-shaped support fitting with a PC steel wire, etc. placement portion formed at the bottom thereof is hooked and supported, and several PC steel wires, etc. are placed on the above-mentioned PC steel wire, etc. placement portion of the support fitting. , characterized by supporting.

Further, the supporting metal fitting is characterized in that it has hook-shaped hanging parts on both sides of the upper part, a PC steel wire, etc. placement part on the lower part, and is formed into a generally mouth shape.

Embodiments of the Invention Below, preferred embodiments of the supporting method and device of the present invention will be described with reference to the drawings.

Figures 1 to 4 show a PC according to a first embodiment of the present invention.
FIG. 5 is a front view for explaining the method of supporting steel wires and the supporting metal fittings, and FIG. 5 is a side view of the main parts when the assembly is completed.

(First step) As shown in Fig. 1, inside the beam formwork P assembled in advance to the required size, lower end main reinforcements B and abdominal reinforcements are placed along the inside of the stirrup reinforcements A, which are open at the top. Reinforce C1.

(Second step) As shown in Fig. 2, the hooks 2, 2 of the roughly mouth-shaped support fitting 1 are hooked onto the abdominal muscle C1 to support it, and an unbonded PC steel wire or the like is connected to the upper part of the beam. Insert the support metal fitting 1
Place it on top and support it.

At this time, the side pieces 1a, 1a of the support fitting 1 and the stirrup strip A are temporarily fixed, and the unbonded C steel wire, etc., D and the PC steel wire, etc. placement part 3 of the support fitting 1 are arbitrarily fixed By tying them together, the support fitting 1 and the unbonded steel wire can be prevented from swinging out. In addition, the lower chord of D, such as an unbonded C steel wire, is tied onto the stirrup muscle A, and width stop bars E are arranged along the abdominal muscles CI r CI.

(Third step) As shown in Fig. 3, the stirrup strips A and their Temporarily fasten the side pieces 1a and 1a, and support the upper side of D using an unbonded steel wire or the like.

At this time as well, it is desirable to arbitrarily bind D and the support fitting 1 using unbonded C steel wire or the like, as described above.

(Fourth step) As shown in FIGS. 4 and 5, upper main reinforcements B2, etc. are placed on the upper hook portions a, a, etc. of the stirrup muscles A, and a mouth-shaped shape is placed above the stirrup muscles A. Cover muscle F...
· are arranged at the required pitch and tied together to form the beam reinforcing bar assembly G. In addition, with unbonded C steel wire, etc., the upper chord of D is tied to the covering muscle F.

As shown in FIG. 6, the support fitting 1 has hooks 2a, 2a with hook-shaped hanging parts 2, 2 formed on both sides of the upper part, and a generally mouth-shaped part with a PC steel wire etc. mounting part 3 formed on the lower part. Subject 3a
The male threaded portions 2t), 2b, 5b, and 3b provided at each end are connected by adjustment nuts 4, 4.

According to the first embodiment of the present invention as described above, it can be easily installed regardless of the workability of the beam formwork and staking reinforcement, and the level of the unbonded C steel wire etc. can be easily adjusted using the adjusting nuts 4, 4. This is easily possible, and excellent effects can be obtained in improving workability and precision, such as preventing swinging of the support metal fittings by binding the support metal fittings with stirrup bars.

Next, other embodiments of the method of this invention will be described.

A supporting method according to a second embodiment of the present invention shown in FIG.
The upper end main reinforcement B2 + B2 is arranged and supported in advance on the upper end hook parts a, a of the mouth-shaped stirrup reinforcement A, and this upper end main reinforcement B
2. B2 is supported by hooking the hooks 22, 22 of the support fitting 21, and the same effect as described above can be obtained.

Note that the support fitting 21 has hook-shaped hook-shaped hook portions 22, 2 at the top.
I made the direction of 2 face outward and hooked it to the main reinforcement at the top end.

A support fitting according to a third embodiment of the present invention shown in FIG.
A concave PC steel wire etc. mounting portion 36 is integrally formed at the bottom of the generally mouth-shaped main body 55FL, and the same effects as in the first embodiment can be obtained.

A support fitting according to a fourth embodiment of the present invention shown in FIG.
Outward (or inward) hook-shaped hanging parts 42, 42 are formed on both sides of the upper part of the mouth-shaped main body 41a using a single wire rod, and can be used when precision is not particularly required. It can be easily implemented due to its simple structure.

Effects of the Invention As explained in detail above, according to the supporting method and supporting metal fittings of the present invention, when constructing a beam with a comparatively high yield, it is possible to easily and efficiently achieve high efficiency in the reinforcing assembly order. This makes it possible to obtain an extremely excellent supporting method and supporting metal fittings for PC steel wire, etc., which can be carried out reliably and advantageously with high precision.

[Brief explanation of drawings]

1 to 4 are front views of the process according to the method of the first embodiment of the present invention, FIG. 5 is a side view of the main parts of a beam assembled by the method of the first embodiment, and FIG. FIG. 7 is an exploded front view of the support fitting of the first embodiment, FIG. 7 is a front view of main parts showing some steps of the second embodiment, FIG. 3 is a front view of the support fitting of the third embodiment, and FIG. It is a front view of the support metal fitting of 4th Example. 1. Support metal fittings, 2. Latching portion, 3. Placement for PC steel wire, etc., 4. Adjustment nut, A. Stirrup strip, B.
・Lower end main muscle, B2...Upper end main muscle, C1...Abdominal muscle, D, D
...Unbonded PC steel wire, etc.

Claims (3)

[Claims] (1) Hook-shaped hanging parts were formed on both sides of the upper part of the upper end main reinforcement or abdominal reinforcement near the middle of the beam reinforcing bar assembly assembled to the required size, and a PC steel wire, etc. placement part was formed at the lower part. A PC steel wire, etc., characterized in that it is supported by hooking a roughly ■-shaped support fitting, and several PC steel wires, etc. are arranged and supported on the above-mentioned PC steel wire, etc. placement part of each support fitting. How to support. (2) A supporting metal fitting for a PC steel wire, etc., characterized by having a hook-shaped hanging part on both sides of the upper part, a PC steel wire, etc. mounting part at the lower part, and being formed in a generally ■ shape. (3) The PC according to claim 2, which is configured to be connected by interposing an adjustment nut that can move forward and backward between each of the hook parts on both sides of the upper part and the PC steel wire etc. mounting part at the lower part. Support metal fittings such as steel wire.