KR100998501B1 - Gravitational precast retaining wall for sticking to all slope using fall protection net and wire - Google Patents

Abstract

PURPOSE: A gravity type precast retaining wall for slope press using a collapse prevention net and a wire is provided to increase coherence between a cutting area and a precast retaining wall, since the precast retaining walls are coupled by the cutting area and an anchor. CONSTITUTION: A gravity type precast retaining wall for slope press using a collapse prevention net and a wire comprises a main body, a vertical wall, a first shear key(130), a second shear key(140), a guide pipe, an anchor guide pipe, and a coupling ring(190). The vertical wall is extended from the inner center of an incline to the bottom side. The first shear key is projected from the upper side of the steel material. The second shear key is made of steel materials in a hollow shape. The guide pipe, made of steel material, is inserted between first shear key and the second shear key. The anchor guide pipe passes through the vertical wall. The coupling ring is fixed on both rear ends of the bottom surface of the main body.

Description

GRAVITATIONAL PRECAST RETAINING WALL FOR STICKING TO ALL SLOPE USING FALL PROTECTION NET AND WIRE}

The present invention relates to a gravity-type precast retaining wall, and in particular, it is possible to integrate the inclined wall accumulation, to strengthen the bonding force between the precast retaining wall using a shear key, and to fasten the precast retaining wall with a cut and an anchor, After the installation of the collapse prevention net, the collapse prevention and precast retaining wall are mutually connected through the wire, and the steel pipe is inserted into the upper precast retaining wall and the lower precast retaining wall, and the grout material is injected through the inside of the steel pipe to form the steel pipe and the precast retaining wall. The present invention relates to a gravitational precast retaining wall that can be in close contact with a collapse prevention net and a wire to be integrated.

In general, a retaining wall is a wall that prevents soil from falling down due to soil pressure, and refers to a wall to prevent the slope of the soil cut or piled up from falling under the pressure of the soil.

These retaining walls form formwork with rebars and panels to cut soil from construction areas or fill valleys and lower areas in mountainous areas. In addition, after the concrete is poured into the form, it is generally constructed by filling the soil and crushed stone on the rear surface thereof. However, the retaining wall of such reinforced concrete is not preferable in terms of cost and air due to molding and curing, and also to allow mechanical stress. May not be easy to secure.

On the other hand, recently, a block retaining wall that solves the above problems and provides a beautiful appearance in appearance is widely used.

However, in the conventional block-type retaining wall structure as described above, when the retaining walls are coupled to each other, there is a problem that the structure has an unstable state because there is no separate structure for increasing the mutual bonding force.

In addition, since there is no weight of the block retaining wall, and the up, down, left and right coupling between the block retaining walls is weak and unstable, and thus it is difficult to withstand horizontal earth pressure, the overall slope wall layering is almost impossible, and thus there is a problem of being limited to the step wall forming layering.

The present invention is to solve the above problems, it is possible to integrate the inclined wall layering, to strengthen the bonding force between the precast retaining wall using the shear key, and to fasten the precast retaining wall with the cut and anchor, collapse on the cut surface The purpose of the present invention is to provide a gravity precast retaining wall for strengthening the bonding force between the cut portion and the precast retaining wall by connecting the net and the precast retaining wall to each other after the installation of the screen.

In addition, the present invention is the gravity precast retaining wall to effectively resist the earth pressure by integrating the steel pipe and the precast retaining wall by injecting a grout material through the inside of the steel pipe after inserting the steel pipe in the upper precast retaining wall and the lower precast retaining wall There is another purpose to provide.

Another object of the present invention is to provide a gravity precast retaining wall that forms a space portion inside the precast retaining wall and facilitates movement and lifting by filling a dead stone inside the space portion.

Features of the present invention for achieving the above object,

A cut surface is cut to form a cut surface, and in a gravity type precast retaining wall installed on the cut surface, reinforcing bars are placed in the formwork, concrete is poured into the formwork, and the form is made of precast, and an inclined surface is formed on the front surface. A main body having a bottom surface formed horizontally at a lower end of the inclined surface and having a space portion formed at a rear surface thereof; A vertical wall extending from the inner central portion of the inclined surface to the bottom surface side; A plurality of first shear keys protruded from the upper surface of the inclined surface of the main body at the same angle as the inclined surface by a hollow steel material; A plurality of second shear keys formed of a hollow steel material and inserted inward on the same line as the first shear key on the bottom of the inclined surface of the main body; A guide tube inserted between the first shear key and the second shear key by a synthetic resin or metal material at an angle with the inclined surface of the main body; An anchor guide tube inserted into one or more penetrating through the vertical wall on the inclined surface of the main body; And it is characterized in that it comprises a coupling ring fixed at both ends of the bottom bottom surface of the main body.

Here, the second shear key has a diameter in which the first shear key of the gravity precast retaining wall located above or below is inserted.

Here, the main body is stacked in a staggered form with the main body of the gravity precast retaining wall located thereon.

Here, the first shear key, the guide tube, and the second shear key of the main body are inserted into the steel pipe so as to be integrated with the main body of the gravity precast retaining wall located above, below, or above and below.

Here, the steel pipe is formed with a plurality of discharge holes in the outer surface, and the grout material is injected into the interior to integrate with the inclined surface.

Here, the anchor guide tube is inserted through the anchor is fixed to the cut surface to fix the main body to the cut surface.

Here, the collapse prevention net is fixedly fixed to the cut surface of the said cut part by a binding means.

Here, the coupling ring is fixed to each other by the collapse preventing net and the wire and the connecting means.

According to the gravity-type precast retaining wall of the present invention configured as described above, integrated inclined wall layering is possible, by using a shear key to strengthen the coupling force between the precast retaining wall, and by cutting the precast retaining wall with a cut and an anchor part Strengthen the bond between precast retaining walls.

In addition, according to the present invention it is possible to effectively resist the earth pressure by integrating the steel pipe and the precast retaining wall by inserting the grout material through the inside of the steel pipe after inserting the steel pipe in the upper precast retaining wall and the lower precast retaining wall.

In addition, according to the present invention, by forming a space portion inside the precast retaining wall and filling the sandstone inside the space portion, it is easy to move and lift, thereby reducing work time and construction cost.

1 is a perspective view showing the configuration of a gravity precast retaining wall according to the present invention.
FIG. 2 is a cross-sectional view taken along AA of FIG. 1.
3 is a cross-sectional view taken along line BB of FIG. 1.
4 is an explanatory diagram for explaining a process of constructing a gravity precast retaining wall according to the present invention.
Figure 5 is a side cross-sectional view showing the state after completion of construction of the gravity precast retaining wall according to the present invention.

Hereinafter, the configuration of the gravity-type precast retaining wall according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a perspective view showing the configuration of a gravity precast retaining wall according to the present invention, Figure 2 is a cross-sectional view A-A of Figure 1, Figure 3 is a cross-sectional view B-B of FIG.

1 to 3, the gravity precast retaining wall 100 according to the present invention includes a main body 110, a vertical wall 120, a first shear key 130, a second shear key 140, Guide pipe 150, steel pipe 160, anchor guide pipe 170, anchor 180 and the coupling ring 190 is composed.

First, the main body 110 is a reinforcing bar (not shown) in the formwork (not shown), the concrete is poured into the formwork is made of precast, the inclined surface 111 is formed on the front surface, the inclined surface 111 on the bottom A bottom surface 113 formed horizontally is formed at the bottom of the bottom portion, and a space portion 115 is formed on the rear surface thereof and is stacked in a staggered form with the main body of the gravity precast retaining wall positioned at the top. Here, the space 115 is filled with the dead stone 117 to increase the weight of the main body 110. Here, the angle of the inclined surface 111 preferably has an angle corresponding to the angle of the cut surface A.

In addition, the vertical wall 120 is integrally formed from the inner central portion of the inclined surface 111 of the main body 110 to the bottom surface 113 side. At this time, the vertical wall 120 is reinforced with reinforcement in the formwork, concrete is poured into the formwork is preferably made of precast integrally with the main body 110, the height is the height of the top surface of the inclined surface 111 of the main body 110 Is formed the same as

In addition, the first shear key 130 is a hollow steel material protrudes at the same angle as the inclined surface 111 on the upper surface of the inclined surface (111). Here, the first shear key is installed at the time of manufacture of the main body 110 and integrally formed, and a pair is installed to be spaced apart from each other on the upper surface of the inclined surface 111 so that the second shear key of the gravity precast retaining wall located at the upper portion is inserted. It is desirable to be.

In addition, the second shear key 140 is formed of a hollow steel material and is formed inwardly in the same line as the first shear key 130 on the bottom surface of the inclined surface 111. Here, it is preferable that the second shear key 140 has a diameter in which the first shear key of the gravity precast retaining wall located above or below is inserted. Here, the second shear key 140 is formed at the time of manufacture of the main body 110 and is integrally formed, and is spaced apart from each other at the bottom of the inclined surface 111 so that the first shear key of the gravity precast retaining wall positioned at each lower portion thereof is inserted therein. It is preferable that a pair be provided.

On the other hand, the guide tube 150 is made of a synthetic resin or a metal material is formed between the first shear key 130 and the second shear key 140 at the same angle as the inclined surface 111. Here, the guide tube 150 is installed during the production of the main body 110 is formed integrally.

In addition, the steel pipe 160 is integrated with the body of the gravity precast retaining wall which is positioned above, below, or above and below the first shear key 130, the guide tube 150, and the second shear key 140 of the main body 110. Let's do it. Here, the steel pipe 160 has a plurality of discharge holes 161 are formed on the outer surface, and the grout material is injected into the steel pipe 160 to be integrated with the inclined surface 111. Here, the steel pipe 160 may be formed with tabs (not shown) at both ends so as to be mutually assembled, and the steel pipe 160 is inserted into the main body 110 with a predetermined length, and the main body 110 is stacked. The first shear key 130 and the second shear key 140 may be coped with each other.

In addition, at least one anchor guide tube 170 is inserted through the vertical wall 120 at the inclined surface 111. Here, the anchor guide tube 170 is installed during the manufacturing of the main body 110 is formed integrally.

In addition, the anchor 180 is fixed to the cut surface A through the anchor guide tube 170 to fix the main body 110 to the cut surface A.

On the other hand, the coupling ring 190 is fixedly installed at both ends of the bottom surface 113 of the main body 110. At this time, the cut surface (A) of the cut portion is fixed to the collapse preventing net 191, such as a metal mesh or grid by a binding means 193, such as pins, anchor bolts, the coupling ring 190 and the collapse preventing net 191 and The wire 195 and the connecting means 197 such as a turn buckle, coupler are fixed to each other.

Hereinafter, with reference to the accompanying drawings the construction process of the gravity-type precast retaining wall according to the present invention will be described in detail.

Figure 4 is an explanatory view for explaining the construction process of the gravity precast retaining wall according to the present invention, Figure 5 is a side cross-sectional view showing the state after completion of the construction of the gravity precast retaining wall according to the present invention.

First, the cut portion is cut along the boundary line for constructing the retaining wall to form a cut surface A, and the ground is horizontally arranged. At this time, it is preferable to install a perforated pipe (not shown) in the longitudinal direction and the transverse direction of the cut surface A to perform a smooth drainage treatment.

In addition, the cut-out net 191 made of metal or synthetic resin is fixed to the cut surface A of the cut portion by a binding means 193 such as a pin or an anchor bolt.

In this state, after digging in the ground can be filled with sandstone to form a drainage layer (not shown), and the foundation concrete can be poured or precast foundation concrete (not shown) can be installed.

When the cleanup is completed, the gravity-type precast retaining wall 100 according to the present invention is positioned in front of the cut surface A and arranged in a line.

When the installation of the gravity precast retaining wall 100 of the lower row 1 is completed, each coupling ring 190 and the collapse preventing net 191 is interconnected by using the wire 195 and the connecting means 197, and then the main body ( The sandstone 117 is filled in the space 115 of the 110.

Then, to install the gravity precast retaining wall 100 on top of the pre-installed gravity precast retaining wall 100, this is installed so as to cross each other so that each end is located on the center line of the vertical wall (120).

In addition, when the gravity precast retaining wall 100 is installed on the pre-installed gravity precast retaining wall 100, the inclined surface 111 of the main body 110 is positioned in the same line, and the first of the pre-installed main body 110 is located. The front end key 130 and the second shear key 140 of the main body 110 to be installed are assembled to each other.

In addition, when the installation of the gravity precast retaining wall 100 of the upper two rows is completed, after each coupling ring 190 and the collapse preventing net 191 is interconnected using a wire 195 and a connecting means 197, The sandstone 117 is filled in the space 115 of the main body 110.

When the stacking of the main body 110 is completed to the design height in the same manner as described above, the steel pipe (1) in the first shear key 130 and the guide tube 150 and the second shear key 140 provided in the main body 110 located at the top end ( After the 160 is inserted, the first shear key 130, the guide tube 150, and the second shear key 140 of the main body 110 positioned at the bottom end thereof are fixed to the ground.

Then, the grout material is injected into the steel pipe 160, and the grout material is injected into the steel pipe 160, the first shear key 130, the guide tube 150, and the second shear key 140, and solidify the grout material. .

Then, the earth and sand (S) is backfilled between the main body 110 and the cut surface (A).

Meanwhile, the anchor 180 is inserted into the anchor guide tube 170 to fix the anchor 180 to the cut surface A. The anchor hole 180 is inserted through the anchor guide tube 170 to be inserted into the anchor guide tube 170. Perforations or when the lamination of the main body 110 may be pre-drilled perforation hole 103 in the corresponding position.

As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

110: body 120: vertical wall
130: first shear key 140: second shear key
150: guide pipe 160: steel pipe
170: anchor guide tube 180: anchor
190: coupling ring 191: collapse prevention net
193: binding means 195: wire
197 Connecting means A: Cut surface

Claims (8)

In the cut-off section to form a cut surface, the gravity precast retaining wall provided on the cut surface,
Reinforcing bar in the formwork, the concrete is poured into the formwork is made of precast, the inclined surface having an angle corresponding to the angle of the cut surface is formed on the front surface, the bottom surface formed horizontally at the bottom of the inclined surface It is formed, the body is filled with sandstone to increase the weight, to form a drainage layer to form a drainage to reduce the earth pressure, the main body is laminated in a staggered form with the main body of the gravity-type precast retaining wall located thereon;
It is formed extending from the inner side of the inclined surface of the main body to the bottom side, the reinforcement is reinforced in the formwork, concrete is poured into the formwork is made of precast integrally with the main body, the height is the height of the inclined surface of the main body An equally formed vertical wall;
A plurality of first shear keys protruded from the upper surface of the inclined surface at the same angle as the inclined surface, and are integrally formed when the main body is manufactured, and are integrally spaced from the upper surface of the inclined surface; ;
The first shear key of the gravity-type precast retaining wall, which is formed of a hollow steel material, is inserted inwardly in the same line as the first shear key on the bottom surface of the inclined surface, and is integrally formed when the main body is manufactured, and is located below each other. A plurality of second shear keys having a diameter in which a pair is installed and spaced apart from each other at a bottom of the inclined surface so that the first shear keys are inserted;
A guide tube which is formed at a same angle with the inclined surface between each of the first shear key and the second shear key by a synthetic resin or a metal material, and is installed at the time of manufacturing the main body and integrally formed; And
An anchor guide tube inserted through the vertical wall at the inclined surface and formed integrally when the main body is manufactured, and having an anchor inserted therein and fixed to the cut surface to fix the main body to the cut surface;
A collapse preventing net fixed to the cut surface of the cut portion by a binding means;
A coupling ring fixedly installed at both ends of a bottom surface of the main body to fix the main body and the collapse preventing net to each other through wires and connecting means,
In the first shear key, the guide tube and the second shear key of the main body,
Insert and pass through a steel pipe formed with a plurality of discharge holes on the outer surface and injecting grout material into the steel pipe to integrate with the body of the gravity-type precast retaining wall located on the top, bottom or top and bottom Gravity Precast Retaining Walls delete delete delete delete delete delete delete

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