JPH08158383A - Execution method of retaining wall, etc. - Google Patents

Abstract

PURPOSE: To simply, speedily and safely execute a retaining wall wherein the angle of inclination is large, changes on the way of the execution of the work. CONSTITUTION: A steel framed jig is constituted of a base member 2 with a plurality of mounting holes 8, an arm member 3 being pivotally supported at the front end section of the base member 2 in an inclinable manner and having a plurality of mounting holes 10, and support members 4, 5 fixing the arm member at the desired angle of inclination by conforming and bolting the mounting holes of upper and lower end sections to the proper mounting holes 8, 10 of the base member 2 and the arm member 3. A plurality of the steel framed jigs, in which the arm members 3 have the same angle of inclination, are disposed in a row in parallel at intervals narrower than the breadth of a molding plate 19 on the top face of a concrete foundation 15, and a plurality of the molding plates 19 are superposed and fixed on the fronts of a plurality of the arm members 3 at multistages. Rear forms 27 are set up oppositely to the steel framed jigs at regular intervals, and concrete is cast among the rear forms 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for, for example, a building, a retaining wall constructed on a riverbank or a coast.

[0002]

2. Description of the Related Art Conventionally, a retaining wall constructed by stacking stone or concrete molded plates in multiple stages has a structure in which the retaining wall is inclined rearward, or is inclined rearward and becomes vertical on the way. Some angles change. Therefore, for example, when the inclination angle of the retaining wall is large, the molding plates of each step are temporarily fixed, various sizes of stones are supported on the back surfaces of these molding plates, and concrete is placed between them. In addition, when the inclination angle of the retaining wall changes midway, first, on the back side of the molding plate, arrange a jig in which the surface contacting the molding plate is inclined at a predetermined angle, and the molding plate is moved by the jig. Support and fix. Next, the retaining wall was constructed by stacking jigs having different angles from the position where the upper surface, that is, the inclination angle changes.

[0003]

However, when the angle of inclination of the molding plate is large, various sizes of stones are supported on the back side of the molding plate, which is not only dangerous and unstable. However, there is a problem in that it is difficult to put a hand under it, and difficult work is required, and a lot of trouble is required due to the necessity of temporary fixing. Also, when using a jig, when the predetermined inclination angle of the retaining wall to be constructed differs depending on the location, it is necessary to manufacture a jig with a different inclination angle each time, and the inclination angle is different. Even in the construction of the retaining wall that changes along the way, it is troublesome because different types of jigs have to be prepared according to the inclination angles, and the work becomes complicated. Therefore, the present invention has been made to solve these problems. Even if the inclination angle of the retaining wall is large or changes along the way, it is possible to easily and safely perform the stacking work of the molding plates. The purpose is to provide a construction method.

[0004]

In order to achieve such an object, a method of constructing a retaining wall or the like according to the present invention is a base member fixed to an upper surface of a concrete foundation and having a plurality of mounting holes, and a tip of the base member. Arm member having a plurality of mounting holes that are tiltably supported in the portion, and the mounting holes at the upper and lower ends are aligned with the mounting holes of the base member and the arm member as appropriate, and are bolted so that the arm member has a desired tilt angle. A steel jig is constituted by a supporting member to be fixed, and a plurality of steel jigs having arm members having the same inclination angle are arranged in parallel and in a line on the upper surface of the concrete foundation at intervals narrower than the lateral width of the molding plate. A plurality of molded plates are stacked and fixed on the front surface of the arm member of, and then a back mold is installed opposite to the steel jigs arranged in a row at a predetermined interval, and the separator attached to each molded plate is a back mold. frame Stopping the respective arm members and fixed screws, and so as to integrate the molded mold plate and the concrete by implanting concrete between Thereafter molded plate and a back mold.

[0005]

[Operation] A base member is fixed to an upper surface of a concrete foundation, an arm member is pivotally supported at a tip end portion of the base member, and mounting holes at upper and lower ends of a supporting member are matched with appropriate mounting holes of the base member and the arm member. Then, the arm member is fixed at a predetermined inclination angle by tightening the bolt. A plurality of steel jigs constructed in this manner are provided in parallel and in a line on the upper surface of the concrete foundation at intervals smaller than the lateral width of the molding plate. Then, a plurality of molding plates are stacked and fixed on the front surfaces of these arm members in multiple stages.

[0006] Next, the back mold is placed opposite to the steel jigs arranged in a row at a predetermined distance, and the separator attached to each molding plate is screwed to the back mold to fix each molding plate. Later, concrete was cast between the molding plate and the back mold to integrate the molding plate and the concrete.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of constructing a retaining wall or the like according to the present invention will be described below with reference to the drawings. FIG. 1 is an exploded view of a steel frame jig 1 used for constructing a retaining wall of the present invention. The steel jig 1 includes a base member 2, an arm member 3, and an arm member 3 each made of an L-shaped steel material.
And two supporting members 4 and 5 for connecting and fixing the base member 2 and the arm member 3 to each other. First, the base member 2 is provided with two anchor bolts 6, 6 bent in an L shape on the lower surface of the horizontal piece 2a, and the vertical piece 2b is a bolt for connecting the lower end of the arm member 3 to the left end. Hole 7
Through, and laterally long attachment holes 8 for connecting the lower ends of the support members 4 and 5 to the left and right ends are arranged at equal intervals.

The arm member 3 is formed to have a length several times as long as that of the base member 2. A bolt hole 9 is formed at the lower end of one side piece 3a so as to match the bolt hole 7 at the left end of the base member 2. A plurality of mounting holes 10 for connecting the upper ends of the support members 4 and 5 are provided from the lower end to the upper end.
In addition, a reference line 1 that determines the mounting position of the molding plate 19 described later.
1 is displayed at a predetermined position. The support member 4 is formed to have a length that is approximately 1/3 of the arm member 3, and the support member 5 is formed to have a length that is approximately twice the length of the support member 4.
A mounting hole 10 of the arm member 3 and mounting holes 12 and 13 for matching the mounting hole 8 of the base member 2 are formed at both upper and lower ends of a and 5a. All the mounting holes 10 of the arm member 3 are provided in association with the tilt angle of the arm member 3, so that the tilt angle of the arm member 3 can be easily set.

First, as shown in FIG.
Concrete is cast on the upper layer of No. 4 and anchor bolts 6, 6 are embedded in the concrete to fix the base member 2 to the upper surface of the concrete foundation 15. Next, the bolt hole 9 provided at the left end of the base member 2 is aligned with the bolt hole 9 at the lower end of the arm member 3 as shown in FIG. 3, and is connected by the connecting bolt 16 to incline the arm member 3 with respect to the base member 2. Install freely.

Further, the mounting angle is set in accordance with the inclination of the retaining wall that forms the inclination angle of the arm member 3, and as shown in FIG. 4, the support members 4 and 5 are vertically erected at the required places, and the mounting holes are vertically penetrated. 12, 13 are made to communicate with the mounting hole 10 of the arm member 3 and the horizontally long mounting hole 8 of the base member 2, and the tightening bolts 17,
The joint surfaces of the base member 2, the arm member 3 and the support members 4 and 5 are welded together and fixed integrally. At this time, since each mounting hole 8 of the base member 2 is formed in a laterally long shape, both support members 4 and 5 can be accurately connected, and the tilt angle of the arm member 3 can be finely adjusted.

The steel jig 1 is formed in this way, but the same procedure is repeated to form an interval narrower than the lateral width of the molding plate 19 on the upper surface of the concrete foundation 15, more specifically, a half.
A plurality of them are arranged in parallel and in a straight line at intervals of. As a result, a plurality of arm members 3 having the same spacing and forming the same inclination angle are formed on the same plane.

On the other hand, the molding plate 19 attached to the front surface of the steel jig 1 is made of stone, but it may be made of concrete. As shown in FIG. 5, the planar shape is a horizontally long rectangular shape, the front surface is a decorative surface, and the four side surfaces and the back surface are each formed into a flat surface.
Blind holes 20 are formed at upper and lower positions along both inner lines of a vertical line that divides the lateral width of each into four equal parts. These blind holes 20 are provided at right angles to the back surface of the retaining wall as shown in FIG. 6, and a well-known bolt anchor 21 is driven into each of these blind holes 20. One end of each bolt anchor 21 is divided into a plurality of holes in the blind hole 20 as shown in FIG. 7 so that the diameter thereof expands. A screw hole 22 is formed at the other end of the bolt anchor 21.

Therefore, along the lower front surface of each arm member 3 of the plurality of steel jigs 1 arranged in a row on the concrete foundation 15 as shown in FIG. 4, the upper edge is the reference line 11 as shown in FIG. The molded plate 19 is applied in such a manner that it is aligned with the two adjacent arm members 3 and 3 so as to be supported, and the bolt anchors 21 projecting to the back surface are attached to the outside of the arm member 3 as shown in FIG. It is fixed by welding 23 on the side surface. In this manner, the forming plate 19 is stretched over the entire row of the steel jig 1 to form the first stone wall.

Next, as shown in FIG. 10, the lateral position of each molding plate 19 is shifted by 1/2 of the width on the stone wall of the first stage, and the molding plate 19 is attached in the same manner as described above, and the second stage is mounted. Stone walls are piled up, and similarly, the lateral position of the molding plate 19 is shifted for each stage, and the stone walls of the third and fourth stages are sequentially stacked as shown in FIG. As shown in FIG. 10, a gap 24 for joints is provided between the upper and lower sides of the molding plates 19 stacked in this way, and the gap 24 is filled with a spacer 25 made of expanded polystyrene resin.

Then, as shown in FIGS. 12 and 13, the front ends of the separators 26 are welded to the rear ends of the bolt anchors 21 driven into the back surface of each molding plate 19, and the rear ends of these separators 26 are connected to the steel jig 1. As shown in FIG. 12, a back mold 27 formed of mold panels separated from each other by a predetermined distance on the back side of the row is penetrated and fixed, and a space is formed between the back mold 27 and each molding plate 19 as shown in FIG. Concrete C is poured and the molding plates 19 stacked in multiple stages (four stages in the figure) and the concrete C are integrated. The back mold 27 may be an old masonry stone. The molding plate 19 is attached to each arm member 3 by welding a bolt anchor 21. As another means, for example, a hook is fixed to each arm member 3 and an annular hooking piece is provided on the back surface of the molding plate 19. Alternatively, the hook may be fixed to the hook, the hook may be hooked to the hook, and the front end of the separator 26 may be welded to the hook.

In this construction, the height of the retaining wall can be up to about 5 m, and if it is higher than that, the steel jig 1 is further lined up on the concrete C cast as shown in FIG. The molding plates 19 may be assembled, and the molding plates 19 may be mounted in multiple stages in the same manner as described above.

As described above, in the method for constructing a retaining wall or the like according to the present invention, a retaining wall having a desired inclination angle is provided by arranging the steel jigs 1 in rows while adjusting the inclination angle of each arm member 3 thereof. Even if you are not a professional mason, you can easily and speedily carry out construction. Further, even when a retaining wall having a particularly large inclination angle is constructed, the steel frame jig 1 is easily formed, and the construction is far safer than the conventional construction method. Moreover, since the concrete C spreads evenly on the back side of the molding plate 19, a solid retaining wall is constructed.

Further, in the construction method of the present invention, for example, FIG.
As shown in, even when the inclination angle of the retaining wall changes and becomes vertical, the arm member 3 of the steel jig 1 is pivotally supported by the base member 2 so that it can be freely set to a desired angle. The steel jig 1 can be easily formed. Then, the separator 26 is inserted into the screw hole 22 of the bolt anchor 21.
The front end of the above is screwed, and the rear end is penetrated into the back mold 27 to be fixed.

Furthermore, the method of constructing the retaining wall or the like of the present invention is not limited to the retaining wall described above, and it is possible to construct a double-sided wall as shown in FIGS. 16 and 17, for example. First, in the structure shown in FIG. 16, the arm members 3 and 3 are tilted at both ends of the base member 2 like a roof, and fixed with the supporting members 4 and 5, respectively, and the steel jig 1 is assembled and these are arranged in a row. Forming plates 19 are attached to the front surfaces of the arm members 3 and 3 in multiple stages, and the opposing arm members 3 and 3 are connected by a separator 26,
It is possible to perform exterior work on the double-sided roof-shaped walls. In addition, in the structure shown in FIG. 17, the arm members 3 are made to stand upright at both ends of the base member 2a having a short length.
The arm members 3 and 3 are fixedly connected to each other by the support members 5 and 5, and the opposing arm members 3 and 3 are appropriately connected via the separator 26 to form the steel jigs 1 in a row.
A molding plate 19 made of a stone plate having a large area is attached to the front surface of No. 3, which is an application example in which a double-sided wall for interior is constructed.

[0020]

As described above, according to the method for constructing the retaining wall or the like of the present invention, the base member fixed to the upper surface of the concrete foundation, the arm member tiltably supported by the base member, and the arm member are predetermined. Since a steel jig is constituted by a supporting member that is fixed at an angle, and a plurality of molding plates are fixed in multiple stages on the front surface of the arm member of the steel jig, even if the retaining wall has a large inclination angle, the molding plate Can be installed easily and reliably, and the temporary fixing of the molding plate is not required, so work can be performed efficiently and it is safe.

Further, even for a retaining wall whose inclination angle changes in the middle, the arm member of the steel jig is assembled so as to be tiltable, so that the steel jig is simple only by tilting and fixing the arm member to the desired inclination angle. The work efficiency is improved by assembling. Moreover, since it is sufficient to prepare one type of steel frame sig, there is a beneficial effect that the work is easy and does not become complicated.

[Brief description of drawings]

FIG. 1 is an exploded view of a steel frame jig.

FIG. 2 is a side sectional view showing a state in which a base member is fixed on a concrete foundation.

FIG. 3 is a side sectional view showing a state where the arm members are connected to each other.

FIG. 4 is a side sectional view showing a state in which the assembly of the steel jig is completed.

FIG. 5 is a perspective view of a molding plate.

FIG. 6 is a side sectional view of a molding plate.

FIG. 7 is an enlarged sectional view of the same portion.

FIG. 8 is a side sectional view showing a state in which a bolt anchor driven into a molding plate is welded to an arm member.

FIG. 9 is an enlarged sectional view of the same portion.

FIG. 10 is a side sectional view showing a state in which molding plates are attached to the front surface of a steel jig in multiple stages.

FIG. 11 is a perspective view of the same portion.

FIG. 12 is a side cross-sectional view showing a state in which a separator is attached to a bolt anchor on the back surface of each molding plate that is attached to a steel jig in multiple stages.

FIG. 13 is an enlarged sectional view of the same portion.

FIG. 14 is a side sectional view for explaining the construction of a high retaining wall.

FIG. 15 is a side sectional view for explaining the construction of a retaining wall whose inclination angle changes on the way.

FIG. 16 is a perspective view of a construction example of a double-sided wall.

FIG. 17 is a perspective view of a construction example of a double-sided wall.

[Explanation of symbols]

 1 Steel Frame Jig 2 Base Member 3 Arm Member 4,5 Support Member 8, 10, 12, 13 Mounting Hole 15 Concrete Foundation 19 Molding Plate 26 Separator 27 Back Form C Concrete

Claims (2)

[Claims] 1. A base member fixed to an upper surface of a concrete foundation and having a plurality of mounting holes, an arm member pivotably supported by a tip portion of the base member and having a plurality of mounting holes, and mounting of upper and lower end portions. A steel jig is formed by the base member and a supporting member for fixing the arm member at a desired inclination angle by matching the holes to the appropriate mounting holes of the arm member, and a plurality of steel frames having the same inclination angle. Jigs are arranged in parallel and in a straight line on the upper surface of the concrete foundation with a spacing narrower than the lateral width of the molding plate, and a plurality of molding plates are fixed on the front surface of the plurality of arm members by stacking them in multiple stages,
Next, the back formwork is installed opposite to the steel jigs arranged in a row at a predetermined interval, and the separator attached to each molding plate is screwed to the back formwork to fix each arm member. A method for constructing a retaining wall or the like in which concrete is cast between the back formwork and the molding plate to integrate the concrete. 2. The method for constructing a retaining wall or the like according to claim 1, wherein the mounting hole of the base member is formed horizontally long.