KR100991664B1 - Gravitational precast retaining wall united by tensible force - Google Patents

Abstract

The present invention relates to a gravity-type precast retaining wall integrated by a tension force, and particularly, to cut a cut portion to form a cut surface, and in a gravity-type precast retaining wall installed on the cut surface, reinforcing bars are disposed in a form in a rectangular shape, and the formwork is removed. A concrete precast block in which concrete is poured into the precast block, and a fixing unit of a “U” and “J” shape is embedded therein; Reinforcing bar in the formwork, concrete is poured into the formwork is made of precast, the inclined surface is formed on the front surface, the bottom surface is formed horizontally at the bottom of the inclined surface is formed on the bottom, the space portion is formed on the back A slanted precast block having a straight sheath tube installed at a position corresponding to the anchorage and stacked in multiple stages on an upper surface of the basic precast block; And a tension member inserted through a sheath tube of the anchoring precast block and the foundation precast block to introduce prestress into the foundation precast block and the slope precast block.
According to the present invention as described above, it is possible to integrate the inclined wall layering, and to strengthen the coupling force between the base precast block, the inclined precast block and the inclined precast block by using the shear key, and the inclined precast block to the cut portion and the anchor After inserting steel pipe and tension material through the basic precast block and each inclined precast block, and inserting grout material through the inside of the steel pipe, the foundation precast block and the slope precast block are made through the steel pipe and the tension material. By integrating, it is possible to effectively resist the earth pressure.

Description

Gravity-type precast retaining wall united by tension force {GRAVITATIONAL PRECAST RETAINING WALL UNITED BY TENSIBLE FORCE}

The present invention relates to a gravity-type precast retaining wall, and in particular, it is possible to integrate the inclined wall accumulation, and to enhance the coupling force between the basic precast block, the inclined precast block, and the inclined precast block by using the shear key, and the inclined precast. The block is fastened to the cut section and the anchor, and the steel pipe and the tension material are inserted through the foundation precast block and the respective inclined precast blocks, and then grout material is injected through the steel pipe to form the steel pipe and the foundation precast block through the tension material. And a gravitational precast retaining wall integrated by a tension force for integrating the inclined precast block and the cut surface.

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, using the shear key to strengthen the coupling force between the base precast block and the slope precast block and the slope precast block, the slope precast block The purpose of the present invention is to provide a gravitational precast retaining wall integrated by a tension force for integrating the foundation precast block, the inclined precast block, and the cut surface by fastening with the cut portion and the anchor.

In addition, the present invention inserts the steel pipe and the tension material through the basic precast block and each inclined precast block, and then injected the grout material through the inside of the steel pipe, the basic precast block, the slope precast through the tension material Another object is to provide a gravitational precast retaining wall integrated by a tension force that effectively resists earth pressure by integrating the block.

It is another object of the present invention to provide a gravity precast retaining wall integrated by a tension force that forms a space inside the precast retaining wall and fills the sandstone inside the space to facilitate movement and lifting.

Features of the present invention for achieving the above object,

Cut the cut section to form a cut surface, in the gravity precast retaining wall installed on the cut surface, the reinforcing bar is placed in the formwork in a rectangular shape, concrete is poured into the formwork is made of precast, "U" inside A basic precast block in which anchorages of the "J" shape are embedded; Reinforcing bar in the formwork, concrete is poured into the formwork is made of precast, the inclined surface is formed on the front surface, the bottom surface is formed horizontally at the bottom of the inclined surface is formed on the bottom, the space portion is formed on the back A slanted precast block having a straight sheath tube installed at a position corresponding to the anchorage and stacked in multiple stages on an upper surface of the basic precast block; And a tension member inserted through a sheath tube of the anchoring precast block and the foundation precast block to introduce prestress into the foundation precast block and the slope precast block.

Here, the base precast block is formed on the bottom protruding to both sides, the wing plate which is installed inside the guide tube in the longitudinal direction; A rolling prevention jaw protruding in an inverted trapezoidal shape on a bottom surface of the wing plate; First shear keys protruding at the same angle as the inclined surface of the inclined precast block from both ends of the anchorage with a hollow steel material; And a first steel tube penetrating the guide tube of the wing plate and integrated with a neighboring basic precast block.

Here, the inclined precast block may further include a vertical wall extending from the inward central portion to the bottom surface side; A second shear key protruded from the upper surface of the inclined surface at the same angle as the inclined surface by a hollow steel material and formed at a position corresponding to the first shear key; A third shear key formed of a hollow steel material and inserted into the same line as the second shear key on the bottom of the inclined surface and formed at a position corresponding to the first shear key or the second shear key; And at least one anchor guide tube inserted into the vertical wall from the inclined surface.

Here, the third shear key has a diameter in which the first shear key of the basic precast block or the second shear key of the inclined precast block is inserted.

Here, the inclined precast block is stacked in a staggered form with the main body of the inclined precast block located above.

Here, a second steel pipe is inserted into the first shear key of the basic precast block, the second shear key of the inclined precast block, the sheath pipe and the third shear key to insert the basic precast block and the inclined precast block. Integrate.

Here, the first and second steel pipes are formed with a plurality of first and second discharge holes to discharge the grout material injected into the outside.

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 tension member is inserted into one of the second steel pipe and penetrates the anchorage of the foundation precast block, and is discharged through the other second steel pipe inside and then into the second steel pipe in a tense state. It is fixed by the grout material which flows in and out.

According to the gravity precast retaining wall of the present invention constituted as described above, it is possible to integrate the inclined wall layering, strengthen the coupling force between the basic pre-catalytic block and the inclined precast block using the shear key, and cut the inclined precast block By combining with the anchor can strengthen the bonding force between the cut portion and the precast retaining wall.

Further, according to the present invention, after inserting the steel pipe and the tension material through the basic precast block and each inclined precast block, the grout material is injected through the inside of the steel pipe, the basic precast block through the tension material, and the slope precast block. By integrating the cast block, the earth pressure can be effectively resisted.

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 the foundation precast block of the gravity-type precast retaining wall integrated by the tension force according to the present invention.
FIG. 2 is a cross-sectional view taken along AA of FIG. 1.
Figure 3 is a perspective view showing the configuration of the inclined precast block of the gravity-type precast retaining wall integrated by the tension force according to the present invention.
4 is a cross-sectional view taken along line BB of FIG. 2.
5 is a cross-sectional view taken along line CC of FIG. 2.
6 is an explanatory diagram for explaining a process of constructing a gravity-type precast retaining wall integrated by a tension force according to the present invention.
Figure 7 is a side cross-sectional view showing the state after completion of construction of the gravity-type precast retaining wall integrated by the tension force according to the present invention.

Hereinafter, the configuration of the gravity-type precast retaining wall integrated by the tension force 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 made based on the contents throughout the specification.

1 is a perspective view showing the configuration of the foundation precast block of the gravity-type precast retaining wall integrated by the tension force according to the present invention, Figure 2 is a cross-sectional view of Figure 1 AA, Figure 3 is integrated by the tension force according to the present invention It is a perspective view which shows the structure of the inclination precast block of a gravity type precast retaining wall, FIG. 4 is sectional drawing BB of FIG. 2, and FIG. 5 is sectional drawing CC of FIG.

1 to 5, the gravity precast retaining wall 100 according to the present invention includes a basic precast block 110, an inclined precast block 120, and a tension member 130.

The basic precast block 110 is a rectangular shape, the reinforcing bars in the formwork, concrete is poured into the formwork is made of precast, the interior of the "U", "J" shaped anchorage 111 is embedded . That is, the "U" shaped anchorage is installed in the center, and the "J" and "reverse J" shaped anchorages are spaced apart from both sides.

The base precast block 110 protrudes on both sides at the bottom thereof, and protrudes in an inverted trapezoidal manner to the wing plate 112 having the guide tube 112a installed therein in the longitudinal direction and the bottom surface of the wing plate 112. A first shear key 114 protruding at the same angle as the inclined surface 121 of the inclined precast block 120 to be described below, at both ends of the anti-jamming jaw 113 and the hollow steel material. Further, the first steel pipe 115 through the guide tube 112a of the wing plate 112 and integrated with the neighboring basic precast block 110 is further provided. At this time, the first shear key 114 is preferably installed at the time of manufacturing the basic precast block 110. In addition, the first steel pipe 115 has a plurality of first discharge holes (115a) is formed on the outer surface, and the grout material is injected into the interior of the first steel pipe 115 to integrate with the neighboring base precast block. In addition, after the tension member (not shown) is inserted into the first steel pipe 115, both ends may be fixed using a fixing tool.

The inclined precast block 120 is reinforced with reinforcement in the formwork, concrete is poured into the formwork is made of precast, the inclined surface 121 is formed on the front surface, the bottom surface is formed horizontally at the bottom of the inclined surface 121 A bottom surface 122 is formed, a space portion 123 is formed on the rear surface, and a straight sheath pipe 124 is installed at a position corresponding to the anchorage 111 of the foundation precast block 110, thereby providing a foundation free structure. The upper surface of the cast block 110 is stacked in multiple stages.

In addition, the inclined precast block 120 includes a vertical wall 125 extending from the inner central portion of the inclined surface 121 to the bottom surface 122 and an inclined surface 121 on the upper surface of the inclined surface 121 of a hollow steel material. The second shear key 126 protrudes at the same angle, and is formed at a position corresponding to the first shear key 114 of the basic precast block 110, and the second shear key at the bottom of the inclined surface 121 of a hollow steel material. It is inserted and formed in the same line as the (126), the first shear key 114 of the basic precast block 110 or the second shear key 126 of the inclined precast block 120 has a diameter that is inserted A third shear key 127 formed at a position corresponding to the first shear key 114 or the second shear key 126, and at least one anchor guide tube inserted through the vertical wall 125 in the inclined surface 121 ( 128). At this time, the sheath tube 124 is the same angle between the second shear key 126 and the third shear key 127 so that the tension member 130 and the second steel pipe 140, which will be described below, can be inserted. It is preferable that the inclined precast block 120 is installed at the time of manufacture, and the second shear key 126, the third shear key 127, and the anchor guide tube 128 also manufacture the inclined precast block 120. It is preferable to install.

In addition, the inclined precast block 120 is stacked in a staggered form with the inclined precast block located on the upper, 1/2 length of the base precast block 110 so that a pair is mounted on the base precast block 110 It is preferable to form.

The tension member 130 is inserted through the anchorage 111 of the inclined precast block 120 and the sheath tube 124 of the foundation precast block 110 to form the foundation precast block 110 and the inclined precast block 120. Introduce prestress. At this time, the tension member 130 is inserted into any one of the second steel pipe 140 to be described later to penetrate through the fixing unit 111 of the basic precast block 110, the other second steel pipe 140 After being discharged through the inside, it is fixed by the grout material flowing into the second steel pipe 140 in a fixed state using a fixing plate (not shown).

On the other hand, the second shear pipe (140) on the first shear key 114 of the basic precast block 110 and the second shear key 126, the sheath pipe 124 and the third shear key 127 of the inclined precast block 120. ) Is inserted to integrate the elementary precast block 110 and the gradient precast block 120. At this time, the second steel pipe 140 is formed with a plurality of second discharge holes 141 on the outer surface, injecting grout material therein to integrate the basic precast block 110 and the inclined precast block 120. .

In addition, the anchor 150 passes through the anchor guide tube 128 of the inclined precast block 120 and is fixed to the cut surface A to fix the inclined precast block 120 to the cut surface A.

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

6 is an explanatory view for explaining the process of constructing the gravity-type precast retaining wall integrated by the tension force according to the present invention, Figure 7 is a state after completion of the construction of the gravity-type precast retaining wall integrated by the tension force according to the present invention Side cross section view.

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 this state, after digging into the front ground of the cut surface (A) to fill the sandstone to form a drainage layer (not shown), the base precast block 110 is placed on the ground and arranged in a line. At this time, the wing plate 112 of the foundation precast block 110 to distribute the load is transmitted to the ground, the sliding prevention jaw 113 is the foundation precast block 110 is pushed to the front based on the back pressure of the cut surface (A) To prevent them.

When the arrangement of the foundation precast block 110 is completed, the first steel pipe 115 is passed through the guide pipe 112a of each wing plate 112, and then grout material is injected into the first steel pipe 115. To integrate with the neighboring elementary precast block.

When the installation of the basic precast block 110 is completed, the inclined precast block 120 is installed on the upper surface of the basic precast block 110, and the first shear key 114 of the basic precast block 110 is installed. The third shear key 127 of the inclined precast block 120 is assembled to each other. In this case, two gradient precast blocks 120 are stacked on one basic precast block 110. Here, the space 123 of the inclined precast block 120 is filled with a dead stone (S) to increase the weight of the inclined precast block 120.

Then, the inclined precast block 120 is stacked again on top of the pre-installed inclined precast block 120, where the ends are installed so as to cross each other at the center line of the vertical wall 125.

Further, when the inclined precast block 120 is stacked on the pre-installed inclined precast block 120, the inclined surface 111 is positioned in the same line, and the second shear key of the inclined precast block 120 is provided. 126 and the third shear key 127 of the inclined precast block 120 to be installed are assembled to each other. At this time, the space 123 of the installed inclined precast block 120 is filled with a dead stone (S).

When the stacking of the inclined precast block 120 to the design height is completed in the same manner as described above, the second shear key 126 and the sheath pipe 124 and the third shear key provided in the inclined precast block 120 located at the uppermost level. After inserting the second steel pipe 140 to 127, the end of the second steel pipe 140 is fixed to the first shear key 114 of the basic precast block 110.

Then, the tension member 130 is inserted into one of the second steel pipes and discharged through the second steel pipe again through the fixing hole 111 of the basic precast block 110, and then the tension material 130. Strain. At this time, the tension member 130 is a form of fixing the four inclined precast block 120 by using three strands.

Then, the grout material is injected into the second steel pipe 140 to be discharged into the second shear key 126, the sheath pipe 124, the first shear key 114, and the fixing unit 111. 130) to settle therein.

Then, the earth and sand G is backfilled between the basic precast block 110 and the sloped precast block 120 and the cut surface A. FIG.

Meanwhile, the anchor 150 is inserted into the anchor guide tube 128 to fix the anchor 150 to the cut surface A. The anchor hole 150 is inserted through the anchor guide tube 128. In the case of drilling or lamination of the inclined precast block 120, the drilling hole 101 may be previously drilled at a 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: basic precast block 120: inclined precast block
130: tension member 140: second steel pipe
150: anchor A: cut surface
G: Tosa S: Buddhism

Claims (9)

In the cut-off section to form a cut surface, the gravity precast retaining wall provided on the cut surface,
Reinforcing bars in the formwork in a rectangular shape, the concrete is poured into the formwork is made of precast, the anchorage is embedded in the form of "U", "J" inside, and protruding on both sides on the bottom, the length A wing plate in which a guide tube is installed in a direction, a thrust prevention protrusion protruding in an inverted trapezoid shape on a bottom surface of the wing plate, first shear keys protruding from both ends of the anchorage by hollow steel material, and A basic precast block made of a first steel tube which penetrates the guide tube and integrates with the neighboring basic precast block;
Reinforcing bar in the formwork, concrete is poured into the formwork is made of precast, the inclined surface is formed on the front surface, the bottom surface is formed horizontally at the bottom of the inclined surface is formed on the bottom, the space portion is formed on the back A slanted precast block is installed in a position corresponding to the anchorage, and a straight sheath tube is stacked in multiple stages on the upper surface of the foundation precast block, and is stacked in a staggered form with the main body of the inclined precast block positioned at an upper portion thereof. ; And
And a tension member inserted through the anchorage of the inclined precast block and the sheath tube of the basic precast block to introduce prestress into the basic precast block and the inclined precast block. Retaining wall. delete The method of claim 1,
The inclined precast block,
A vertical wall extending from the inner central portion of the inclined surface to the bottom surface side;
A second shear key protruded from the upper surface of the inclined surface at the same angle as the inclined surface by a hollow steel material and formed at a position corresponding to the first shear key;
A third shear key formed of a hollow steel material and inserted into the same line as the second shear key on the bottom of the inclined surface and formed at a position corresponding to the first shear key or the second shear key; And
Gravity precast retaining wall to which the tension force is applied, characterized in that it further comprises an anchor guide tube inserted into the at least one through the vertical wall in the inclined surface. The method of claim 3, wherein
The third shear key is,
A gravity precast retaining wall to which tension is applied, wherein the first shear key of the basic precast block or the second shear key of the inclined precast block is inserted therein. delete The method of claim 3, wherein
In the first shear key of the basic precast block, the second shear key of the inclined precast block, the sheath pipe and the third shear key,
A gravity precast retaining wall to which a tension force is applied, wherein a second steel pipe is inserted to integrate the foundation precast block and the inclined precast block. The method according to claim 6,
The first and second steel pipes,
A gravity precast retaining wall to which tension is applied, wherein a plurality of first and second discharge holes are formed to discharge the grout material injected into the outside. The method of claim 1,
In the anchor guide tube,
A gravity precast retaining wall to which a tension force is applied, wherein an anchor is inserted and fixed to the cut surface to fix the main body to the cut surface. The method of claim 7, wherein
The tension material,
The grout material is inserted into one of the second steel pipes, penetrates through the anchorage of the basic precast block, and is discharged through the other second steel pipe, and then is introduced into the second steel pipe in a tense state and discharged into the grout material. Gravity precast retaining wall to which tension is applied, characterized in that it is settled by.

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