JP3547505B2 - Retaining reinforcement - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a reinforcing material (so-called iron beam) used as a reinforcing means for preventing collapse of a retaining wall or an underground skeleton due to earth pressure, water pressure or the like in underground skeleton construction.
[0002]
[Prior art]
Conventionally, when the height of the basement floor is large (for example, 6 m or more) in the underground skeleton construction, as shown in FIG. A horizontal cut beam 17 is erected between the bellows 16 and 16 to support the mountain retaining wall 15 against earth pressure and the like.
[0003]
After that, a formwork is incorporated and a concrete is poured in order to construct an underground skeleton. However, the formwork cannot be assembled to the ground at one time because of the bulge 16 and the cutting beam 17. Therefore, first, the formwork is assembled at the lower position of the cutting beam 17 and concrete is poured in. Then, after removing the bellows 16 and the cutting beam 17, the formwork is placed above the removed cutting beam 17. And concrete was cast.
In this way, the concrete for the skeleton was cast twice and the underground skeleton 18 was built up to the ground.
[0004]
[Problems to be solved by the invention]
In this way, the uplift 16 and the cutting beam 17 are removed after the first underground concrete is cast and the preceding underground skeleton 18 is constructed. Therefore, prior to the removal, the retaining wall 15 and the preceding In order to reinforce the underground skeleton 18, the required number of the cannon beams 19 were installed instead of the cutting beams 17 so as to receive horizontal force such as earth pressure.
[0005]
However, when installing the iron beam 19, the lower bracket 20 is attached to the preceding underground skeleton 18, the prow 16a is installed on the lower bracket 20, and the upper bracket 21 is mounted on the prow 16a.
[0006]
In addition, the gun butt 23 must be constructed on the foundation frame 22. The gun beam 19 was cut slightly shorter than the expected size, and the shortage when installed diagonally was adjusted by welding a steel material or an iron plate. Therefore, diversion of the gun beam 19 was also difficult. As described above, the installation of the steel beam in the underground skeleton construction in which the underground skeleton has a large floor height requires a lot of labor and costs.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a mountain retaining reinforcing material that unites an iron cannon beam into a compact unit, facilitates installation work, and can be diverted to reduce cost. And
[0008]
[Means for Solving the Problems]
The gist of the present invention to solve the above problems and achieve the above object is that a base material to be placed on a foundation frame and a rear end portion are swingably connected to one longitudinal end side of the base material. A gun beam, a bundle connected between the other end of the base material and the tip of the gun beam, and a belly upset provided on the tip side of the gun beam and in contact with the underground skeleton wall. The bundle member and the base member are folded on the gun beam, and a locking means for suspending the entire member on one side surface along the longitudinal direction of the gun beam is provided.
[0009]
Further, the belly is provided on the distal end side of the gun beam via a spherical-paired universal joint; further, the base member is provided with an open leg that can be stored in the base member. That the connecting means is provided on the protruding portion for connecting the protruding portion to another protruding portion.
[0010]
[Action]
According to the reinforcement device of the present invention, the bundle material and the base material can be folded on the gun beam, and there is a locking means for suspending the entire reinforcement material. This also makes it easier to install a gun butt as in the prior art, making installation very simple and shortening the construction period. Also, by changing the angle of the bundle, the height of the belly can be changed, making it easier to accommodate underground structures with different heights.
[0011]
【Example】
Next, embodiments according to the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, a mountain retaining reinforcement 1 according to a first embodiment of the present invention has a base member 4 mounted on a foundation frame 2 with anchor bolts 3.
[0012]
The base member 4 is formed by arranging steel L-shaped angle members in parallel, and connecting and connecting a connecting member between them.
A required number of anchor holes 4a are formed at equal intervals in a horizontal plane of the angle material. At one end in the longitudinal direction of the vertical plane, a hole is formed correspondingly so that the rear end of the gun beam 5 can be swung and connected by bolts and nuts.
[0013]
At the other end of the vertical surface in the longitudinal direction, a hole is provided for detachably fixing the rear end of the bundle 6 with bolts and nuts or pins for insertion and extraction.
[0014]
The cannon beam 5 is formed of H steel material, and has a hole formed at its rear end, and is swingably connected to the base member 4 with bolts and nuts as shown in the figure. Further, a hole is also formed in the front end portion, and the front end portion of the bundle member 6 is swingably connected to the front end portion by bolts and nuts.
[0015]
Hanging pieces 5a as hooking means are provided at two places between the H steel flanges of the gun beam 5, and are formed so that the gun beam 5 can be lifted or hung by means such as a crane via a wire. Have been.
[0016]
The bundle member 6 is a steel square member having a rectangular cross section, and has a required length so as to form a substantially right triangle having the base member 4 as a bottom side and the iron beam 5 as a hypotenuse.
[0017]
A hole is penetrated through the tip of the bundle 6 and is rotatably connected to the gun beam 5 with bolts or the like. A fixing hole is formed in the rear end of the base member 4. The base member 4 is sandwiched between the L-shaped angle members arranged side by side. Is fixed to the other end in the longitudinal direction.
[0018]
Further, at the tip of the gun beam 5, there is provided a belly 8 which is horizontally in contact with the underground skeleton wall 7.
[0019]
The belly 8 is formed of an H-shaped steel, and an anchor hole 8a is provided in the protruding portion 8b on a side end surface of the flange portion.
[0020]
The protruding portion 8b is fixed to the main body by welding. Further, one of the bases of the ball seat 9 as shown in FIG. 2 is provided by welding at the center of the surface of one of the flanges of the H-section steel. The other base of the ball seat 9 is fixed to a jack 20 provided on the tip end surface of the gun beam 5 by welding or the like.
[0021]
The ball base 9 and the jack 20 connected thereto allow the belly 8 to swing, rotate and expand and contract with respect to the gun beam 5, and flexibly correspond to the wall surface of the underground frame wall 7. It will be accessible.
[0022]
Further, as shown in FIG. 3, the bolts, nuts or pins at the rear end of the bundle 6 are loosened and removed, and the connection between the bundle 6 and the base 4 is released, so that the bundle 6 and the base 6 are removed. 4 can be folded toward the gun beam 5 side. As another example, the bundle 6 and the cannon beam 5 can be folded toward the base 4.
[0023]
After the reinforcing material 1 is folded, the bundle material 6 and the base material 4 are bolted together so that the bundle material 6 does not spread apart during lifting or transportation by means such as a crane as shown in FIG. Either the nut is fixed to the gun beam 5 or the whole is tied by means such as a chain or a wire.
[0024]
As shown in FIG. 5, the underground skeleton wall 7 is constructed in advance by constructing a formwork and casting concrete by using the mountain retaining reinforcing material 1 according to the first embodiment formed as described above. The hook of the wire 10 is hooked on the hanging piece 5a of the mountain retaining reinforcement 1 folded in the above manner and brought to a desired position by means such as a crane.
[0025]
Then, according to the pitch and number of the anchor holes 4 a of the base member 4, anchor bolts are embedded in the base frame 2 where the reinforcing member 1 is used.
[0026]
An anchor hole 4a of the base member 4 is fitted to the anchor bolt, and a nut is screwed to a screw portion of the anchor member, thereby fixing the base member 4 to the base frame 2.
[0027]
Next, the gun beam 5 is swung up by a crane, raised, and the bundle 6 is erected at a substantially right angle. The rear end of the bundle 6 and the other end of the base 4 are fastened with bolts and nuts. Alternatively, insert and fix the pin.
[0028]
An anchor bolt is buried in the wall surface of the preceding underground skeleton wall 7 so as to correspond to the position of the anchor hole 8 a of the belly 8, and the hole 8 a is fitted to the anchor bolt, and a screw portion is formed. The nut is screwed on, and the belly 8 is horizontally abutted on the wall of the underground skeleton wall 7 to fix the position.
[0029]
In this way, the required number of ridges 8 of the retaining reinforced material 1 are set on the preceding underground skeleton wall 7 to reinforce the retaining wall and the preceding underground skeleton wall 7 against the earth pressure and water pressure of the surrounding ground. is there.
[0030]
In the second embodiment of the present invention, the projecting portion 8b of the bulge 8 in the above-mentioned buckling reinforcement 1 of the first embodiment is eliminated, and instead, as shown in FIGS. This is an embodiment in which a connecting means for integrally connecting with the connecting member 8 is provided.
[0031]
As shown in FIG. 7B, the connecting member 11 as a connecting means is normally rotatably mounted on one end of the belly 8 in the longitudinal direction by a connecting pin 11a.
The connecting member 11 is a steel channel steel (channel type) and has a shape to be housed between flanges of the belly 8.
[0032]
When the connecting member 11 is not used, the side wall at the other end of the connecting member 11 and the flange of the belly 8 are sandwiched by the vice 12. When the connecting member 11 is used, as shown in FIG. 7 (a), the connecting members 11 housed in the one side of the belly 8 on the one side of the belly 8 Then, remove the vise 12 and rotate it approximately 180 °, and hang it on the adjacent belly 8. Then, the side wall of the connecting member 11 and the flange of the adjacent belly 8 are held by the vice 12.
[0033]
Note that one end of the connecting member 11 stored in advance in the adjacent belly 8 overlaps with one end of the connecting member 11 that has been rotated and erected, and as shown in FIG. Is rotated so that the unused connecting member 11c is positioned below the above-mentioned belly upright in the vertical direction, and the bridged connecting member 11b is positioned above.
[0034]
Further, as another embodiment of the second embodiment, as shown in FIG. 8, a required number of connection holes 11d are formed in the side wall surface of the connection member 11 at appropriate intervals.
[0035]
A through hole for inserting the connecting bolt 11e is provided at one end of the flange on the side of the adjacent belly 8 so that the adjacent belly 8, 8 can be securely connected with a bolt and nut. Is what you do.
[0036]
In this manner, the upsets 8, 8 adjacent to each other are connected, and integrally support and reinforce the retaining wall and the preceding underground frame wall 7. Therefore, it is not necessary to fix to the underground skeleton wall 7 with the anchor bolt.
[0037]
In the third embodiment of the present invention, as shown in FIG. 9, an open leg 13 which can be housed in the base member 4 is provided on the retaining member 1 of the first embodiment. With such legs 13, the retaining members 1 a are stably installed on the foundation frame 2. When the reinforcing members 1 a are removed and diverted to other places, each of the legs 13 is It is housed in the base member 4 to be compact and easy to handle.
[0038]
In the fourth embodiment of the present invention, as shown in FIG. 10, the bundle 6 is configured to be stretchable, for example, the length of the bundle 6 is set to be the shortest, about 2 m, and the base 4 is the bottom. From the state of a right triangle having a length of 3.5 m, the connecting position between the rear end of the bundle 6 and the base 4 is moved, the gun beam 5 is also expanded, and the length of the bundle 6 is reduced. It can be 2.9 m.
[0039]
As described above, the height h of the horizontal position of the belly 8 can be adjusted within a range of about 1 m. Of course, the height of the belly 8 can be arbitrarily adjusted according to the amount of expansion and contraction of the bundle 6 and the design length of the gun beam 5. Therefore, it is possible to flexibly respond to the height of the preceding underground skeleton wall 7.
[0040]
In addition to this, as a fifth embodiment of the present invention, although not shown, a hydraulic cylinder is provided on the base member 4 as a swinging means for expanding the iron beam 5, for example, as in a dump truck loading / unloading device. It is proposed to directly push up the gun beam 5 or to push the rear end of the bundle 6 toward the other end of the base member 4 to swing the gun beam 5. Things.
[0041]
Thus, the bundle member 6 and the gun beam 5 can be automatically stored in the base member 4 by retracting the rod of the hydraulic cylinder.
Also, for the movement of the retaining device according to the present invention, the moving wheels can be moved in and out by the hydraulic jack, and can be moved manually in the front-rear direction.
[0042]
【The invention's effect】
As described above, the mountain retaining reinforcement according to the present invention includes a base member mounted on a base frame, and an iron beam whose rear end portion is swingably connected to one longitudinal end side of the base material. A bundle connected between the other end of the base material and the tip of the gun beam, and a belly provided on the tip of the gun beam and abutting against the underground skeleton wall. Since the bundle member and the base member are folded on the gun beam, and a locking means for suspending the entire member on one side along the longitudinal direction of the gun beam is provided, it is necessary to construct the gun beam. This has the advantage of shortening the construction period without the need for labor and reducing the cost because it can be diverted and used.
[0043]
In addition, since the bulging is provided on the tip end side of the gun beam through a spherical pair even joint, the construction can be easily performed because it can flexibly cope with the wall surface of the preceding underground skeleton wall, and the base material is easily provided. The stowable legs are provided in the base material so that the reinforcing member can be stably installed, and the whole can be made compact when it is diverted. Since the connecting means for connecting with the bulging of the reinforcing material is provided, there is no need for the work of anchoring the bulging to the underground skeleton wall, and an excellent effect that labor can be saved can be achieved.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a use state of a reinforced mountain reinforced material according to a first embodiment of the present invention.
FIG. 2 is a partially enlarged front view of the retaining device of the first embodiment.
FIG. 3 is an explanatory view showing a folding function of the mountain retaining reinforcement according to the first embodiment.
FIG. 4 is an explanatory diagram illustrating a state in which a mountain retaining reinforcement according to the first embodiment is lifted.
FIG. 5 is an explanatory view of a use state of the mountain retaining reinforcement according to the first embodiment.
FIG. 6 is an explanatory view of a use state of a mountain retaining reinforcement according to a second embodiment of the present invention.
FIGS. 7A and 7B are explanatory views showing a manner in which the flaring reinforcement of the retaining device according to the second embodiment is connected to an adjacent flaring; FIG. 7B is a plan view of the connecting material stored in the flaring; FIG. 3C is a side view of the state where the connecting members are connected to each other.
FIG. 8 is an explanatory diagram according to another embodiment of the second embodiment.
FIG. 9 is a perspective view of a mountain retaining reinforcement according to a third embodiment of the present invention.
FIG. 10 is an explanatory view showing a function of a retaining device according to a fourth embodiment of the present invention.
FIG. 11 is an explanatory view of a use state of a mountain retaining reinforcement according to a conventional example.
[Explanation of symbols]
1 Retaining reinforcement,
2 Foundation frame,
3 anchor bolts,
4 base material,
5 gun beams,
6 bundles,
7 Underground building walls,
8 Get upset,
9 throne,
10 wires,
11 connecting materials,
12 Shako vise,
15 Mountain retaining wall,
20 jacks.

Claims (4)

A base material to be placed on the base frame, an iron beam having a rear end portion swingably connected to one longitudinal end side of the base material, and the other end portion of the base material and a tip portion of the iron beam And a belly provided on the tip side of the gun beam and abutting against the underground skeleton wall, and the bundle member and the base member are folded into the gun beam. And a retaining member for suspending the entire cannon on one side surface along the longitudinal direction of the cannon beam. 2. The mountain retaining reinforcement according to claim 1, wherein the bulge is provided on a tip end side of the gun beam via a spherical pair even joint. 3. 3. The retaining member according to claim 1, wherein the base member is provided with an open leg that can be stored in the base member. 4. The buckling reinforcement according to any one of claims 1, 2, and 3, wherein the buckling is provided with connecting means for connecting with the buckling of another adjacent buckling reinforcement.

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