JP3133966B2 - Law - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a legal framework.

[0002]

2. Description of the Related Art As shown in FIG. 8, a slope 19 is formed on a slope to prevent its collapse. In this method, a grid-like frame body 23 is formed on a slope with a cast-in-place concrete or a precast concrete block, and the frame body 23 is fixed by an anchor 20 cast in the ground. A main reinforcing bar 21 is arranged in the frame body 23 in the axial direction, and a stirrup 24 is arranged on the main reinforcing bar 21 to secure the sectional strength of the normal frame 19. The length of each of the main reinforcing bars 21 is about 12 m at the maximum, and the lap joint reinforcing bars 22 are provided when a method frame is constructed on a long slope.

[0003]

As described above, in the conventional frame, the construction work on a slope having an unstable scaffold is inefficient because of the large number of lap joint reinforcements of the main reinforcing bars. Was spending a lot of effort and time. In the above arrangement, the frame may break due to partial deformation of the ground,
Or, if they were cracked, they could fall.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to simplify the arrangement of the reinforcing bars, even if the frame is broken due to deformation of the slope. Is to provide a legal framework that does not fall.

[0005]

Means for solving the above problem are as follows. According to a first aspect of the present invention, there is provided a method according to the first aspect of the present invention, wherein a frame is formed at the intersection of a slope and a ground. A core block anchored by the anchor is formed, and stirrups are formed on the core block and the PC steel wire in place of the main reinforcing bar wired to the frame.
The both ends of the PC steel wire are wound on both sides of the legal frame.
It is characterized by being tensioned and fixed on the fixed body provided,
The invention of claim 2 is the invention according to claim 1, wherein the PC steel wire is a core wire or
The outer circumference of the side wire is covered with an inner cylinder of
And the outer circumference of the inner cylinder is made of a synthetic resin middle cylinder.
Double coated with outer cylinder, between these middle and outer cylinders
Is characterized by being filled with a lubricant.

[0006] The length of the PC steel wire is not limited, and the length of the main rebar is one.
Since it can be covered by a book, lap joints can be omitted. Further, since the wiring work of the PC steel wire can be easily performed, the workability can be improved and the working time can be significantly reduced.

[0007] Even if the frame body is broken due to deformation of the slope due to the PC steel wire being wired to the core block, it is suspended by the PC steel wire.

[0008] Since the PC steel wires are firmly fixed to the fixed bodies on both sides, even if all the frames are broken, they are suspended and supported by the PC steel wires.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is a plan view of a legal framework,
FIG. 2 is an enlarged plan view of the same, and FIG. 3 is a sectional view of a normal frame.

The normal frame 1 is formed in a lattice shape by intersecting vertical and horizontal frame bodies 2, and a nuclear block 3 is formed at the intersection of the lattice.
Are formed, and these core blocks 3 are connected to each other by connecting members 4 to be constructed.

The core block 3 has a rectangular shape with a high central portion, and a concave groove 5 is provided in the central portion, and the concave groove 5 is provided with a through hole 6 penetrating to the bottom surface. The concave groove 5
Inside, the end of the anchor 7 cast in the ground is tensioned and fixed to fix the nuclear block 3 to the slope 8.

Further, a PC steel wire 9 penetrating the core block 3 is wired in place of the main rebar in the longitudinal and lateral connecting members 4 of the normal frame 1, and stirrups 10 are provided at appropriate intervals. Reinforcement is arranged, and a formwork wire mesh 10a is arranged outside this. Both ends of the PC steel wire 9 are core blocks 3 on both sides.
And the pre-stress is applied to the entire legal framework 1. As described above, since the PC steel wire 9 is fixed on both sides and is supported by the core block 3 in the middle, even if the connecting member 4 is broken or damaged, the PC steel wire 9 does not fall without being dropped. Is suspended.

As shown in FIG. 4, the PC steel wire 9 is a rust-proof PC steel stranded wire, and the outer circumferences of the core wire 11 and the side wire 12 are respectively covered with an inner cylinder 13 of synthetic resin powder paint. In addition, the outer periphery of the inner cylinder 13 is doubly covered with a middle cylinder 14 and an outer cylinder 15 made of synthetic resin.
The space between the outer cylinder 15 and the outer cylinder 15 is filled with a lubricating material 16 such as grease. The length of the PC steel wire 9 is not limited, and the PC steel wire 9 does not need to be laid in the vertical and horizontal directions, so that the wiring work can be easily performed.

The PC steel wire 9 can be tensioned and fixed to a dedicated fixing block 17 as shown in FIG. 7 (1). It is fixed to the slope 8 by the provided anchor 7. Also, (2) in FIG.
The PC steel wire 9 is tension-fixed to a fixed frame 18 fixed to the slope 8 by the core block 3, and the same effects as described above can be obtained in this case.

Next, a method of constructing the above-mentioned method frame by cast-in-place concrete will be described with reference to FIGS. First, the anchor 7 is cast at the installation position of the core block 3 on the slope 8, that is, at the intersection of the vertical and horizontal frames 2, and the upper end thereof is projected from the slope 8.

Then, a reinforcing bar for a nuclear block is provided at the place where the anchor 7 is cast, and a PC steel wire 9 in place of the main reinforcing bar is laid between these reinforcing bars.
0 is wound at appropriate intervals to provide reinforcement for the connecting member. At this time, the PC steel wire 9 is in a state of being temporarily fixed and not being tensioned.

When such a reinforcing arrangement is completed, a mold for the core block and a mold (not shown) for the connecting member are respectively assembled, and concrete is poured into them. After the concrete is cured, it is released from the mold, and the PC
One end of the steel wire 9 is tensioned with a tension jack to apply prestress to the legal frame 1.

The core block 3 can be constructed of precast concrete instead of cast-in-place concrete. In this case, after the core block 3 is fixed with the anchor 7, the core block 3 is penetrated and the PC steel is inserted. The wire 9 is wired, and the stirrup 10 is arranged on the wire 9 to form a reinforcing bar for a connecting member.

[0019]

As described above, the length of the PC steel wire in place of the main reinforcing bar is not limited, and a single main reinforcing bar can be used, so that the lap joint reinforcing bar can be omitted.

Since the wiring work of the PC steel wire can be easily performed,
Workability can be improved and work time can be significantly reduced.

Since the PC steel wires are wired to the core block, even if the frame is broken due to deformation of the slope, these can be suspended by the PC steel wires so as not to drop. .

[Brief description of the drawings]

FIG. 1 is a plan view of a legal frame.

FIG. 2 is an enlarged plan view of a legal frame.

FIG. 3 is a sectional view of a legal frame.

FIG. 4 is a cross-sectional view of a connecting member.

FIG. 5 is a longitudinal sectional view of a connecting member.

FIG. 6 is a sectional view of a PC steel wire.

FIGS. 7A and 7B are plan views of another normal frame.

FIG. 8 is a sectional view of a conventional legal frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Law frame 2 Frame 3 Core block 4 Connecting member 7 Anchor 8 Slope 9 PC steel wire 10 Stirrup

Claims (2)

(57) [Claims] 1. A core block fixed with an anchor cast in the ground is formed at an intersection of a frame formed to intersect a slope, and wired to the core block and the frame .
A stirrup is wound around a PC steel wire that replaces the main rebar,
The both ends of the PC steel wire are fastened to the fixed bodies provided on both sides of the legal frame.
The anchor is fixed and fixed, and the fixed body is
A legal framework characterized by being fixed to the slope. 2. The outer periphery of the core wire and the side wire is made of PC steel wire.
Each is covered with an inner cylinder of synthetic resin powder paint,
The outer circumference of the inner cylinder is double-coated with a middle and outer cylinder made of synthetic resin
The method according to claim 1, wherein a lubricant is filled between the middle cylinder and the outer cylinder .