JP3701211B2 - Permanent anchored frame structure - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention, in road construction and dam construction, etc., in the structure of a method frame to prevent the sloped surface (slope) that has been scraped to collapse due to rain water, etc., and falling rocks from the surface is generated, In particular, the present invention relates to a structure of a frame with a permanent anchor attached.
[0002]
[Prior art]
Conventionally, various concrete frame structures for preventing and protecting slopes have been implemented.
And in places that are particularly prone to collapse and steeply inclined surfaces, it is possible to prevent the concrete frame constructed by driving long and strong steel permanent anchors deep inside the slope to leave the slope. In this structure, in order to prevent the concrete frame from coming off from the head of the permanent anchor, the large and wide concrete support plate having a width of about 3 to 5 m and a width of about 3 to 5 m is used. There is a method in which an anchor base (called an anchor work base) is made in a factory, transported to the site, and fixed to the head of a permanent anchor that is driven into a concrete frame.
[0003]
The support plate is extremely heavy, about 300 to 500 kg, and cannot be moved to a predetermined position by a human operator. For this purpose, the worker moves to a predetermined position while being carried to a place to be constructed by a heavy machine such as a crane truck and is suspended and fixed to the head of the permanent anchor.
With this method, the work is very difficult because the support plate is too heavy, and depending on the conditions of the construction site, there are places where cranes and other heavy lifting equipment cannot be installed. There were cases where construction was not possible.
In such a structure, the construction cost was inevitably increased due to the difficulty of work and the use of heavy machinery.
[0004]
Further, in order to improve such poor workability, a method of fixing a bearing plate made of relatively light steel or the like to the head of a permanent anchor instead of a heavy support plate (Japanese Patent Laid-Open No. 6-101235). ) Was proposed.
However, since the bearing plate has a structure that is in direct contact with the slope, the slope can be suppressed without dropping the bearing plate from the head of the permanent anchor, but the concrete frame itself The function of holding the entire structure with the permanent anchor was weak, and the supporting force of the permanent anchor was not sufficiently utilized for the concrete frame.
[0005]
[Problems to be solved by the invention]
The present invention was made in view of the above circumstances, and can be easily constructed at the same time as placing on the concrete without using a heavy machine that suspends and transports heavy objects, in a method frame for treating the slope, and It provides a structure of a frame that can be pressed firmly from the top of a concrete frame with the head of a permanent anchor and can be held and fixed without the entire concrete frame floating against the slope.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the frame structure with a permanent anchor according to the present invention surrounds the anchor rebar 5 formed in a ring shape with a vertical cylindrical anchor rebar enclosure frame 6 and integrally connects them with a connecting metal fitting 17. The anchor rebar 5 is bound and fixed above an arbitrary interval position or an arbitrary vertical and horizontal crossing position of the normal frame reinforcing bar 2 fixed and fixed to the slope N coated with the net-like surface covering material 1 and anchored around the periphery. The anchor rebar enclosure frame 6 surrounds.
Then, the resin pipe 7 is projected to the slope N so that the upper end 7a protrudes from the upper surface 4a of the normal frame 4 in the center longitudinal direction of the anchor rebar enclosure frame 6 and fixed to the anchor reinforcing bar 5 or the normal frame reinforcing bar 2. To do.
The side face of the normal frame reinforcing bar 2 is surrounded by a normal frame reinforcing bar enclosure 13.
[0007]
Then, concrete K is cast into the normal frame reinforcing frame 13 and the anchor reinforcing bar enclosure 6 to form the normal frame 4, and the upper end portion 7a of the resin pipe 7 protruding from the upper surface 4a of the normal frame 4 is formed. Excise.
Then, the long permanent anchor 8 with the adhesive injection path 9 is cued into the cavity S of the resin pipe 7 and driven deeply into the slope N, and the screw portion 8b provided on the head 8a of the permanent anchor 8 is inserted. The nut 11 is tightened through the pressure receiving metal plate 10.
A permanent frame structure with a permanent anchor is formed by injecting and filling the adhesive injection path 9 with the permeable adhesive 12 into the cavity S of the resin pipe 7.
[0008]
In the above configuration, the pressure receiving metal plate 10, the nut 11 and the head 8a of the permanent anchor are subjected to a rust prevention treatment.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The form of the frame structure with a permanent anchor of the present invention will be described below based on the embodiments of the drawings.
[0010]
In the present invention, as shown in FIG. 4, the periphery of the anchor reinforcing bar 5 formed in a ring shape is surrounded by a vertical cylindrical anchor reinforcing bar surrounding frame 6 made of a resin plate, and both are integrally fixed by a connecting bracket 17. This should be produced in advance at the factory and brought to the site.
[0011]
The material of the anchor rebar enclosure frame 6 can be made of wire mesh, resin, wood, paper, etc., and the shape of the anchor rebar 5 is a perfect circle (shown in FIG. The ring-shaped one formed in (4) (b)) can be used. Further, as shown in FIG. 4, a cylindrical or rectangular cylindrical anchor reinforcing bar enclosure frame 6 is used according to the shape. The anchor rebar enclosure frame 6 can be used in a two-tiered manner, or by cutting out so as to straddle the frame rebar 2 and providing a straddle port 14 as shown in FIG. it can.
[0012]
At the construction site, as shown in FIGS. 1 and 2, the main surface 3a and the short auxiliary anchor 3b are applied to the slope N covered with the net-like surface covering material 1, and along the four frames of the law frame on the net. The frame reinforcing bars 2 fixed in this way are laid in a lattice set in the vertical and horizontal directions.
And, as shown in FIG. 6, the anchor reinforcing bars 5 are fixed on the upper side of an arbitrary vertical and horizontal crossing position of the laid frame reinforcing bars 2, and the reinforcing bar crossing portions are bound and fixed with a wire or the like, as shown in FIG. 5, The periphery is surrounded by the anchor rebar enclosure frame 6.
[0013]
The circular reinforcing bar 5 or the like anchoring reinforcing bar 5 is restrained from the top of the normal frame reinforcing bar 2 so as to be an anchor with respect to the concrete frame 4 of the concrete K, so that the entire wide normal frame 4 with respect to the slope N A floating prevention effect can be obtained.
[0014]
Then, as shown in FIG. 5, the anchor rebar 5 or the method of the anchor reinforcing bar 5 or the method is provided by protruding the resin pipe 7 to the slope N so that the upper end portion protrudes from the upper surface of the method frame 4 vertically in the center of the anchor reinforcing bar frame 6. Fix to the frame rebar 2.
The side faces of the normal frame reinforcing bar 2 other than those surrounded by the anchor reinforcing bar enclosure 6 are enclosed by the normal frame reinforcing enclosure 13.
[0015]
The concrete frame 4 is formed by spraying or pouring the concrete K into the normal frame reinforcing frame 13 and the anchor reinforcing bar enclosure 6. When the concrete K is solidified, the upper end 7a portion of the resin pipe 7 protruding from the upper surface 4a of the method frame 4 is cut off with a cutter or the like.
Then, as shown in FIG. 6, the long permanent anchor 8 with the adhesive injection path 9 is set in a cueing state into the cavity S of the resin pipe 7 and is deeply driven into the slope N, and the head 8 a of the permanent anchor 8. The nut 11 is screwed and tightened to the threaded portion 8b provided in the base plate 4 through the pressure receiving metal plate 10 in close contact with the upper surface 4a of the method frame 4.
[0016]
Then, as shown in FIG. 3, the permeable adhesive 12 overflows into the adhesive injection path 9 from the gap between the permanent anchor 6 and the solidified concrete K to the upper surface 4 a of the method frame 4, and the cavity S of the resin pipe 7. Inject and fill.
[0017]
Further, the pressure receiving metal plate 10, the nut 11 and the head 8a of the permanent anchor are subjected to rust prevention treatment in order to keep the life long.
As a method of rust prevention treatment, as shown in FIG. 6, a method of covering the fixing cap 12 so as not to be exposed to rain water, a method of applying a rust prevention material, or the like is possible.
[0018]
In the above configuration, the figure shows the form of the method frame 4 formed in the form of vertical and horizontal lattices. However, in the form of the method frame 4 formed of only the form of vertical lattice, the method frame 4 arbitrarily selected at intervals. You may fix the anchor reinforcement 5 with the anchor reinforcement surrounding frame 6 to a site | part.
[0019]
[Operation and effect of the invention]
The present invention is as described above, and the permanent anchor 8 is firmly attached and fixed to the slope 4 by the permeable adhesive 12 injected from the adhesive injection path 9 in the gap between the permanent anchor 8 and the concrete K. Therefore, when the frame 4 is about to rise from the slope N, the pressure-receiving metal plate 10 fixed to the head 8a of the permanent anchor 8 lifts the anchor rebar frame 6 with the nut 11. The pressure applied to the upper surface 4a of the legal frame 4 is received.
And the frame 4 part around the permanent anchor 8 is embedded in the concrete K, and the anchor frame 5 is pressed against the frame frame 2 by the anchor reinforcing bar 5 inside the concrete frame K. It does not rise from the slope N.
[0020]
In construction, workers do not use heavy machinery for suspending and transporting heavy objects as in the past, but workers can supply necessary site materials such as anchor reinforcement 5 with anchor reinforcement enclosure 6 to the construction site. Since it can be easily carried in, it can be constructed very easily even on steep slopes where heavy machinery does not enter.
In addition, since the anchor portion can be constructed simultaneously with the concrete K placing, it is possible to greatly help to reduce the total cost and the construction period.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a longitudinal section of the present invention.
FIG. 2 is a longitudinal side view of the present invention.
FIG. 3 is a longitudinal side view of a main part showing a structure in an anchor reinforcing bar enclosure frame.
FIG. 4 is a perspective view of an anchor reinforcing bar enclosure frame.
FIG. 5 is a perspective view showing an installed state of a normal frame reinforcing bar frame and a state before placing concrete with an anchor reinforcing bar frame.
FIG. 6 is a perspective view of a main part showing an installation state of a head portion of a permanent anchor and a binding and fixing state of a normal frame reinforcing bar portion and an anchor reinforcing bar.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Surface covering material 2 Method frame reinforcement 3 Anchor 3a Main anchor 3b Auxiliary anchor 4 Method frame 4a Upper surface of the method frame 5 Anchor reinforcement 6 Anchor reinforcement frame 7 Resin pipe 7a Resin pipe upper end 8 Permanent anchor 8a Permanent anchor head 8b Screw part 9 of permanent anchor 9 Adhesive injection path 10 Pressure receiving metal plate 11 Nut 12 Penetration adhesive 13 Leg frame reinforcing bar frame 14 Fixing cap 15 Anchor driving hole 16 Leg frame straddle opening 17 Connecting metal fitting S Resin pipe cavity N slope K concrete

Claims (2)

The anchor rebar (5) formed in a ring shape is surrounded by a vertical cylindrical anchor rebar enclosure frame (6), and both are integrally fixed with a connecting metal fitting (17), and covered with a net-like surface covering material (1). The anchor reinforcing bar (5) is bound and fixed above an arbitrary interval position or an arbitrary vertical and horizontal crossing position of the normal frame reinforcing bar (2) anchored to the slope (N), and the periphery of the anchor reinforcing bar is fixed. The resin pipe (7) is sloped so that the upper end (7a) protrudes from the upper surface (4a) of the normal frame (4) in the center longitudinal direction of the anchor reinforcing steel frame (6). (N) is fixed to the anchor rebar (5) or the frame rebar (2), and the side of the frame rebar (2) is surrounded by the frame rebar enclosure frame (13). A concrete frame (K) is placed in the enclosure frame (13) and the anchor rebar enclosure frame (6). 4) is formed, and the upper end (7a) portion of the resin pipe (7) protruding from the upper surface (4a) of the method frame (4) is cut out and bonded into the cavity (S) of the resin pipe (7). The long permanent anchor (8) with the agent injection path (9) is set in a cueing state and driven deeply into the slope (N), and the screw part (8b) provided on the head (8a) of the permanent anchor (8) The nut (11) is tightened via the pressure metal plate (10), and the adhesive injection path (9) is filled with the permeable adhesive (12) into the cavity (S) of the resin pipe (7). A frame structure with a permanent anchor. The frame structure with a permanent anchor according to claim 1, wherein the pressure receiving metal plate (10), the nut (11) and the head (8a) of the permanent anchor are subjected to rust prevention treatment.

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