KR20100053270A - Retaining wall and its construction method using tensioning anchor, pre-cast panel and pre-cast reinforcing panel - Google Patents

Abstract

PURPOSE: A retaining wall for cutting area with a tensioning material, a pre-cast panel and a pre-cast reinforcing part and a construction thereof are provided to reduce construction times by reducing the curing time of concrete and to reduce construction costs by reducing the amount of the concrete. CONSTITUTION: A retaining wall for cutting area with a tensioning material, a pre-cast panel and a pre-cast reinforcing part is constituted as follows. A hole is formed at the center of a precast panel(200). A concrete precast reinforcement(300) is placed between the precast panel and a slope. A hole is formed at the center of the concrete precast reinforcement and a cylindrical sleeve is inserted into the hole.

Description

Retaining wall and ITS CONSTRUCTION METHOD USING TENSIONING ANCHOR, PRE-CAST PANEL AND PRE-CAST REINFORCING PANEL with tension member, precast panel and precast reinforcement

The present invention relates to a retaining wall installed on an inclined ground, and more particularly, a plurality of precast panels having a hollow cut along the ground, and horizontally arranged the inclined ground, are arranged side by side, between the panel and the inclined ground. A precast reinforcement having a pressure-bearing wall and a bearing wall is provided, and holes of the panel and the reinforcement are fitted into the tension member fixed to the ground, and the panel and the ground are integrally applied by applying a predetermined tensile force to the tension member at the front of the panel. It relates to a cut portion retaining wall having a tension member, a precast panel, and a precast reinforcement, and a construction method thereof.

Generally, a wall that resists earth pressure so that soil does not collapse is called a retaining wall. Among these retaining walls are retaining walls using permanent anchors and retaining walls using tension members, for example, rock bolts.

In general, the retaining wall using the permanent anchor forms a concrete wall of a predetermined thickness along the slope of the slope, and fixes the concrete wall by installing the permanent anchor at a predetermined interval. In this way, the concrete wall is in close contact with the slope of the slope to cover the slope of the slope to prevent the situation of the slope. However, the retaining wall using such a permanent anchor has the disadvantage that the vegetation, such as the tree planting on the retaining wall is impossible by covering the entire slope.

1 shows a retaining wall 1 using a tension member according to the prior art. The conventional retaining wall 1 is laminated with a tension member 20 fixed to the base 10 cut in a step shape and a virtual vertical plane in a step shape, and each panel 30 fixed by the tension member 20. ) Between the panel 30 and the cut base 10. Therefore, vegetation is possible in the part corresponding to the horizontal plane in the stepped land (40).

However, the retaining wall 1 using the conventional tension member 20 is grouted and fixed to the cut slope, but when drawing the tension member 20 to apply prestress to the tension member 20, the bearing force of the land 40 In this case, the panel 30 is displaced in the direction of the slope 42, so that the external exposed surface of the retaining wall 1 formed of the respective panels 30 may not be in the same plane so that sufficient prestress is achieved. The disadvantage is that you cannot apply force. Therefore, the number of mounting of the tension member 20 is increased, there is a disadvantage that the construction period and cost of the retaining wall (1) increases.

Another proposed conventional retaining wall 50 structure is shown in FIG. The conventional retaining wall 50 structure secures the permanent anchor 70 fixed to the precast concrete panel 60 to the base 80 to improve resistance to earth pressure applied to the precast concrete panel 60. It is to provide a retaining wall structure that suppresses the ground activity with greater resistance.

Such a conventional retaining wall 50, in the construction method, horizontally arranges the ground and cuts the slope along the boundary line for the construction of the retaining wall 50, while vertically fixing the panel fixing pins to the horizontally arranged ground After placing and curing the foundation concrete 82, the hollow panel 60 is inserted into the pinhole formed on the bottom of the fixing pin while being seated and positioned, and inclined with respect to the horizontal direction of the earth pressure to be applied to the panel 60. (84) and then drills the inclined paper 84 to be gradually inclined downward toward the inside, and then inserts the anchor 70 into the insertion hole of the drilled inclined paper 84, and the rear end of the anchor 70 of the inclined paper 84 Settle in the insertion hole. And tensioning the anchor 70, fixing the tip of the tensioned anchor 70 to the panel 60, and forming the land 90 between the panel 60 and the cut slope 84. Include.

In addition, such a retaining wall 50 of the prior art is formed on the panel 60 and the panel 60 is located along the contact area of the foundation concrete 82 and the cut slope 84 of the horizontally arranged ground Both ends are respectively settled in the tensioned state of the insertion hole drilled in the hole and the cut slope 84, the inclined slope gradually toward the inside of the slope 84 with respect to the direction of the horizontal earth pressure applied to the panel 60 It is a structure including an anchor 70 having a.

Therefore, since the panel 60 is vertically positioned, the conventional retaining wall 50 may be buried between the panel 60 and the cut slope 84 to allow vegetation such as tree planting and the panel 60. By setting the angle of the anchor 70 to the horizontal earth pressure acting on the smaller than the conventional anchor to reduce the force required to suppress the ground activity, it is possible to reduce the tensile force that the anchor 70 must receive, thereby causing expensive anchors (70) Construction cost can be reduced.

However, such a conventional technique is to combine the concrete panel 60 and the anchor 70 after the cut is made in the middle, the tension member 70 between the back of the concrete panel 60 and the cut slope 84 first. In the middle of the concrete backfill 94 will be carried out. In such a process, the conventional retaining wall 50 has a problem that the amount of backfilled concrete is increased so that the air is long in the field and the construction cost is excessively generated.

In addition, in installing the concrete panel 60, the fixing pin should be fixed to the ground, and the panel 60 needs to be installed while plugging the pin hole formed on the bottom in accordance with the fixing pin, which is troublesome in construction and takes a long time. there was.

In addition, such a conventional retaining wall 50 has a low depth of the fill land 84 due to the concrete backfill 94 is filled between the back of the concrete panel 60 and the cut slope 84, consequently the trees Even when planting, there was a problem that the vegetation is not good because the space for the plant roots to extend is narrow.

The present invention is to solve the conventional problems as described above, the object is

Reduction of construction costs by reducing the amount of backfilled concrete on site, and cutting with improved tension, precast panels and precast reinforcement to shorten the backfill concrete curing period and significantly reduce construction air To provide a retaining wall and its construction method.

Another object of the present invention is to provide a deep filling of the soil due to the vertical space between the panel and the reinforcement, in the process of installing the precast panel, to improve the workability, and to increase the safety and the precast panel and The present invention provides a cut portion retaining wall having a precast reinforcement and a construction method thereof.

In order to achieve the above object, the present invention is configured as follows.

The cut retaining wall according to the present invention cuts down the slope and horizontally arranges the ground, and a plurality of precast panels are formed along the clear ground side by side, and precast reinforcement is installed between the precast panel and the slope. A tension member is inserted into the hole formed in the precast panel, the hole of the precast reinforcement, and the drilling hole formed in the ground, and a tension member is installed. The precast panel and the ground are integrally acted by applying a tensile force, and the precast reinforcement is formed with a pressure wall facing one end of the slope, and the pressure wall is formed with a hole fitted into the tension member, and the other end is precast. The bearing wall which is in close contact with the back of the panel is provided. Through such a structure, it is possible to reduce the amount of backfilled concrete to be constructed at the site, thereby reducing the construction cost, and greatly reducing the construction air by shortening the backfill concrete curing period.

And the present invention is preferably the precast panel is configured to form a variable pressure plate receiving portion on the front side to be freely change the installation angle of the tension member in accordance with the ground conditions, by forming a plurality of alignment jaw on the back of the precast reinforcement The alignment jaw accurately induces engagement with the alignment jaw, and the alignment jaw is provided with a protrusion coupled to the step of the precast reinforcement, and the alignment jaw is coupled to the through hole formed in the strength wall of the precast reinforcement by a plurality of through holes. Therefore, it is easy and easy to assemble on site according to the slope ground in the field.

In addition, the present invention is preferably the precast panel can be formed in the upper corner (요) grooves to facilitate alignment during construction.

In the present invention, the precast reinforcement is preferably formed in a tubular symmetrical direction in the vertical direction with respect to the hole formed in the precast panel to stably support the precast panel.

In addition, the present invention preferably the precast reinforcement may include a horizontal wall in the horizontal direction connecting the upper or lower bearing walls in the vertical direction to improve the yield strength, less earth and sand filling to reduce the retaining wall, The precast stiffener is inclined mounted so that the vertical bearing wall can evenly digest the pressure applied from the precast panel, and forms a plurality of holes in the bearing wall or the bearing wall to form a plurality of holes between the base and the inside of the precast reinforcement. To ensure smooth communication between moisture and organic matter between the precast reinforcement and the adjacent precast reinforcement, it is installed after the surface trimming on the slope. Through this, it is not only structurally strong but also maintains a stable slope after site installation.

In the present invention, the precast reinforcement is preferably separated from the pressure wall and the bearing wall, respectively, may be connected through a pin to reduce the volume during transport and to facilitate handling.

In addition, the present invention is preferably the precast panel and the precast reinforcement is formed integrally with each other can be easily assembled on-site.

In order to achieve the above object, the construction method of the cut portion retaining wall according to the present invention is a cut portion retaining wall construction method using a tension member, a precast panel, and a precast reinforcement, and cuts along a boundary line for constructing the retaining wall. Forming and horizontally arranging the ground, inserting a tension member and drilling and curing the grout after drilling on the inclined ground, and a precast panel having a hole formed in the center and a hole formed in the center thereof. And a precast reinforcement having a bearing wall formed on the precast panel side in the horizontally-arranged ground and a slope, and a tension member inserted into and protruding into the acupressure wall hole of the precast reinforcement and the hole of the precast panel. And applying a predetermined prestress to the precast pad. Filling between the null and the precast reinforcement. Through this, it is easy and easy to assemble the site according to the inclined ground, and after fleshing, the soil can be deeply filled due to the vertical space between the precast panel and the reinforcement, so there is enough space for the plant roots to extend. The growth conditions can be maintained satisfactorily.

And the present invention preferably comprises the step of horizontally arranging the ground includes the step of installing a perforated pipe in the longitudinal direction and the transverse direction of the cut surface for smooth drainage treatment, and the step of placing the precast panel on the ground is the boundary line According to the present invention, the method includes placing and curing the foundation concrete on the ground, and applying a predetermined prestress to the tension member to fix the tension member. The precast panel may further include pretensioning the head by passing the tension member through the precast panel. The panel may be prevented from falling in the opposite direction of the ground, followed by the step of curing curing the backfill concrete between the acupressure wall and the slope of the precast reinforcement to secure the supporting force when the prestress is introduced into the tension member.

In order to achieve the above object, the present invention constructs a cut retaining wall of the first row, and then a cut of the retaining wall of the second row on top of the cut retaining wall of the first row, wherein the cut of the second row The land retaining wall horizontally arranges the ground of the cut ground retaining wall of the first row, or another cutting ground of the original ground as a new ground, and constructs the cut ground retaining wall of the first row on the new ground. Repeatedly constructed above the cut retaining wall of the first row, it can be repeated above the slope to construct the cut retaining wall of the multi-stage row by the bottom-up method to install the cut retaining wall on the slope.

And when the cut retaining wall is preferably constructed in multiple stages, the lower retaining wall has a structure in which a precast panel of the upper retaining wall is placed on the upper side of the precast reinforcement to be bonded and more stable. Retaining walls can be constructed.

In order to achieve the above object, the present invention constructs a cut retaining wall of the first row after the first cut of the cut retaining wall, the second row of cut retaining wall in the lower part of the constructed first retaining wall, The land retaining wall is constructed below the cut retaining wall of the first row, and is constructed below the cut retaining wall of the first row by repeating the steps of constructing the cut retaining wall of the first row on the new ground. By repeating below the slope, the cut retaining wall of the multi-stage row can be constructed in a top-down manner. Therefore, it is possible to build a multi-layer cut retaining wall in various ways to suit the site slope terrain.

According to the present invention, it is possible to reduce the amount of backfill concrete to be constructed in the field because the retaining wall can be constructed on the slope using the precast panel, precast reinforcement, and the tension member, thereby reducing the construction cost, the backfill concrete curing period The effect of shortening the construction air can be greatly reduced.

In addition, according to the present invention, in the process of installing the precast panel, install the fixing pins vertically to the foundation concrete and improve the workability by eliminating the inconvenience of precisely matching the precast panel with the pinhole formed on the bottom, The precast panel is assumed to be the other end of the tension member is fixed to the end to prevent the panel from falling in the opposite direction to the slope can increase the safety.

In addition, according to the present invention, since the vertical space is formed between the precast panel and the precast reinforcement due to the bearing wall, the amount of fill is increased, and the soil may be buried deeply, thus providing sufficient space for the plant roots to extend. The effect which can maintain favorable growth conditions is acquired.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

The cut portion retaining wall 100 according to the present invention cuts the slope and horizontally arranges the ground, and the precast panel 200 and the precast reinforcement 300 as shown in FIG. 3 are arranged along the ground. , Is connected through the tension member (400).

As shown in FIG. 4, the cut portion retaining wall 100 of the present invention has a hole 202 formed in the center of the precast panel 200, and a concrete free portion between the precast panel 200 and a slope. A cast reinforcement 300 is disposed, in the center of which a hole 302 is formed and a cylindrical sleeve 310 is fitted.

The precast panel 200 and the precast reinforcement 300 are both formed of a concrete material, the precast panel 200 has a flat structure, and one end of the precast reinforcement 300 is inclined. While the opposing acupressure wall 320 is formed, the acupressure wall 320 is formed with a hole 302 fitted into the tension member 400, and the other end of the bearing wall 330 is in close contact with the rear surface of the precast panel 200. ) Is provided.

In this structure, the precast panel 200 is configured to freely change the installation angle of the tension member 400 according to the ground conditions by forming the variable pressure plate receiving portion 210 on the front surface, as shown in FIG. The variable pressure plate receiving portion 210 forms a hemispherical groove on the front surface, and as described later, the tension member 400 is seated on the variable pressure plate receiving portion 210 on the head. Including a variable angle (semi-spherical) pressure plate 410 can be formed in a structure that can be easily changed according to the installation angle of the tension member 400.

And the precast panel 200 as shown in Figure 6a, by forming a plurality of alignment jaw 220 on the back can be accurately coupled to the bearing wall 330 of the precast reinforcement 300, The alignment jaw 220 may be coupled to a through hole 332 formed in the bearing wall 330 of the precast reinforcement 300 by a plurality of through holes 230 and the connection pins 232.

In addition, the alignment jaw 220 is provided with a protrusion 222, as shown in Figure 6b, coupled to the step 342 of the precast reinforcement 300 by precast panel 200 and precast reinforcement The spheres 300 may be coalesced with one another at defined locations.

In addition, the precast panel 200, as shown in Figure 7a, to form a groove (250) in the upper corner to facilitate alignment during construction, such as the yaw of the upper parent frost For example, the pre-coated panel 200 may be aligned in the groove 250 by inserting an elongated steel material in the longitudinal direction, and after the construction, a finishing block (not shown) may be placed to improve the view of the retaining wall. In addition, the drain hole 260 is formed in the lower part of the precast panel 200 to help drain the surface water and minimize contamination of the front surface of the precast panel 200 by leaching the surface water.

In addition, the precast panel 200 may install a nonwoven fabric (not shown) in the panel joint portion and the drain hole 260 to prevent leakage of concrete or earth and sand, and the side edges of the precast panel 200 may be rounded. To prevent the edges from cracking, and may be configured to improve aesthetics when reinforcing curved slopes.

In addition, the precast panel 200 may be made of porous concrete, and may have a structure in which greening is possible and aesthetics are improved.

In addition, the precast panel 200 further includes a reinforcing wall 270 facing the bearing wall 330 of the precast reinforcing member 300 on its rear surface to be structurally reinforced, as well as the precast reinforcing member ( The space | interval with 300) can be enlarged.

Meanwhile, as shown in FIG. 7B, the precast reinforcement 300 has a structure in which the bearing wall 330 is formed in a tubular shape 330a which is symmetrical in the vertical direction with respect to the hole 202 formed in the precast panel 200. to be. The tubular 330a structure has a tension member 400 passing through the center thereof, and the front surface of the bearing wall 330 is in a state of being interviewed with the rear surface of the precast panel 200.

In addition, as shown in Figure 8a, the precast reinforcement 300 may further include a horizontal wall 350 in the horizontal direction connecting the upper or lower load-bearing wall 330 in the vertical direction to improve the strength Therefore, the soil filling can be reduced accordingly, and the retaining wall can be reduced in weight. The precast reinforcement 300 can evenly digest the bearing pressure applied from the precast panel 200 by the bearing wall 330 in the vertical direction. It may also be mounted obliquely.

In addition, the precast reinforcement 300 is formed in the acupressure wall 320 or the bearing wall 330, a plurality of through holes 360, as shown in Figure 8b between the base and the precast reinforcement 300 inside In addition, the precast reinforcement member 300 and the adjacent precast reinforcement member 300 may be formed to allow smooth communication with moisture.

As shown in FIG. 9A, the precast reinforcement 300 is separated from the acupressure wall 320 and the bearing wall 330, and the pins 370 are connected through the holes 372, respectively. The precast panel 200 and the precast reinforcement 300 may be integrally formed with each other as shown in FIG. 9B. As such, when the precast panel 200 and the precast reinforcement 300 are integrally formed with each other, there is an advantage of easy installation in the field.

As described above, the cut portion retaining wall 100 of the present invention is manufactured in various structures and shapes of the precast panel 200 and the reinforcement 300, and the present invention is not limited to such a structure, and various modified structures It may include.

In the cut portion retaining wall 100 of the present invention, as shown in FIG. 10, the tension member 400 is fitted into the hole 202 formed in the precast panel 200, and the tension member 400 is the free material. It penetrates through the cylindrical sleeve 310 fitted in the hole 302 of the cast reinforcement 300 and is inserted into the drilling hole 520 formed in the ground 500.

The tension member 400 may be made of any one of, for example, permanent anchor, sole nail, or lock bolt. In addition, in the tension member 400, when the tension member 400 is fixed by the grout in the boring hole 520 of the inclined ground 500, a predetermined tension force is applied to the tension member 400 at the ground surface. By applying the precast panel 200, the reinforcement 300 and the ground 500 to be integrated to build a concrete retaining wall 100 on the slope. In this process, the precast panel 200 and the precast reinforcement 300 are installed on the inclined ground 500 on which the retaining wall 100 of the present invention is formed, after the surface trimming is performed with the shotcrete 530, or the precast panel. In the state where the head of the tension member penetrates the through hole formed in the 200 and the precast reinforcement 300 is assumed, concrete can be poured into the pressure wall of the reinforcement 300 and the inclined ground 500.

Hereinafter, a method of constructing the cut portion retaining wall 100 of the present invention will be described in more detail.

Cut section retaining wall construction method of the present invention is to use the tension member 400, the precast panel 200 and the precast reinforcement 300, as shown in Figure 11a, the boundary line (P) for the construction of the retaining wall ) Is cut along to form a slope 550, and the ground 500 is leveled. In the ground clearance step as described above, the ground 500 is arranged along the installation boundary P on which the retaining wall is to be installed, and the slope 550 corresponding to the retaining wall is cut. In addition, the step of horizontally arranging the ground 500 in this way is to install a perforated pipe (not shown) in the longitudinal direction and the transverse direction of the cut surface for a smooth drainage treatment.

And as shown in Figure 11b, after the punched in the inclined paper 550, inserting the tension member 400, filling and curing the grout is made.

In the inserting and grouting of the tension member 400, a punching hole 520 is formed in the ground 500 to have a predetermined inclination angle through the punching machine 600, and then the tension member 400 is drilled into the punching hole ( 520), filled with grouting and cured. As such, the method of installing the tension member 400 is the same as the conventional method, and thus a detailed description thereof will be omitted.

Next, as shown in FIG. 11C, the precast panel 200 and the reinforcement 300 are seated on the ground 500 and the slope 550. First, the ground 500 has a base. Concrete 620 will be installed. Such basic concrete 620 is poured and cured along the installation boundary line (P) of the site where the cut slope 550 and the ground 500 contact.

The precast panel 200 having a hole formed at the center is installed on the foundation concrete 620, and a hole is formed at the center through the sleeve 310, and the acupressure wall 320 is disposed on the slope 550 side. This is formed, the precast reinforcement 300 is placed on the precast panel 200 side bearing wall 330 is formed.

In addition, as shown in FIG. 10, the precast reinforcement 300 is placed on the slope 550 to stabilize the ground 500 by pouring the shot concrete 530, and then precast reinforcement 300. In the state in which the precast panel 200 and the reinforcement 300 is disposed as described above, the tension member 400 penetrates the precast panel 200 to fix the head to fix the head. And prevents the precast panel 200 from falling in the opposite direction of the ground 500.

Next, as shown in FIG. 11D, the tension member 400 is inserted into the acupressure wall hole 302 of the precast reinforcement 300 and the hole 202 of the precast panel 200 to protrude into the tension member 400. A step of applying a predetermined prestress is performed, and the step of applying the prestress in this way is first shotcrete or backfilled concrete 700 between the acupressure wall 320 and the slope 550 of the precast reinforcement 300 After pouring the curing is made to secure a holding force during the introduction of the prestress of the tension member (400).

Then, the tension member 400 is introduced from the front surface of the precast panel 200 to tension the tension member 400, and then accommodates the variable pressure plate of the hemispherical groove formed on the front surface of the precast panel 200. The variable 210 (hemispherical) pressure plate 410 formed on the head of the tension member 400 is fixed to the portion 210 and the anchor cap is put thereon to arrange the head.

And, as shown in Figure 11e, the precast panel 200 and the precast reinforcement 300 is filled with the step of forming a filling land 800. After forming the fill land 800 as described above, the trees 810 may be planted in the fill land 800, or another cut line retaining wall 100 is formed successively up and down, The tree 810 may be planted later.

On the other hand, the retaining wall constructed by such a cut portion retaining wall construction method of the present invention can form a retaining wall of another row on its upper side.

This is based on the ground retaining wall 100a of the first row constructed through the steps as shown in Figs. 3, 11A to 11E, with the land 800 or the edge of another ground cut into the new ground. Thus, the cut portion retaining wall 100b of the second row is constructed.

In this case, as shown in FIG. 12A, the ground 500 is horizontally laid again using the land 800 provided in the cut retaining wall 100a of the first row as a new ground. As shown in Figure 12b, after forming the perforated hole 520 in the slope 550 on the new ground 500, the step of inserting the tension member 400 and filling and curing of the grout is made.

Then, as shown in FIG. 12C, after the foundation concrete 620 is poured and cured on the new ground 500, the precast panel 200 having the hole 202 formed in the center and the hole 302 formed in the center thereof are formed. It is formed, the pressure wall 320 is formed on the slope 550 side, the precast reinforcement 300 is formed on the precast panel 200 side, the bearing wall 330 is formed, on the new ground 500 Step of applying a predetermined prestress to the tension member 400 protruding through the pressure wall hole 302 of the precast reinforcement 300 and the hole 202 of the precast panel 200 (Figs. 11C and 11D). Is made). In addition, a step is formed between the precast panel 200 and the precast reinforcement 300 on the new ground 500 to form a new land 600 (see FIG. 11E).

Through these repetitive steps, the second row of cut retaining wall 100b is installed side by side on the top of the cut retaining wall 100a of the first row, and when it is repeated above the slope 550, the upper part of the cut retaining wall 100a is illustrated in FIG. It is possible to construct a multi-layer cut retaining wall as shown in the bottom-up (Buttom-Up) method. In such a case, the lower side cut retaining wall 100a of the first row pre-installed is the precast panel 200 of the cut line retaining wall 100b of the second row post-installed on the upper side 333 of the precast reinforcement 300. ) May be placed in a combined structure (see FIG. 9).

Meanwhile, the cut retaining wall construction method of the present invention can be constructed in a top-down manner unlike the above, which is first performed through the steps shown in FIGS. 3 and 11A to 11E. A cut ground retaining wall 100a is constructed, and a new ground 500 is formed thereunder to cut a cut portion retaining wall 100c in a second row.

In this case, as shown in FIG. 13A, first, horizontally arranging the new ground 500 at the lower portion of the cut ground retaining wall 100a of the first row, in which case the slope 550 is also cut. To build a new ground (500).

And as shown in Figure 13b, after drilling on the slope 550 on the new ground 500, the step of inserting the tension member 400 and filling and curing of the grout is made, as shown in Figure 13c, Placing and curing the foundation concrete 620 on the new ground 500 is made.

Next, as shown in FIGS. 11C to 11E, a precast panel 200 having a hole 202 formed in the center on the new ground 500 and a hole 302 formed in the center, Acupressure wall 320 is formed on the side of 550, and a precast reinforcement 300 having a bearing wall 330 is formed on the precast panel 200, and precast on the new ground 500. A predetermined prestress is applied to the acupressure wall hole 302 of the reinforcement hole 300 and the tension member 400 inserted into the hole of the precast panel 200 to protrude therefrom, and on the new ground 500. Steps to fill between the precast panel 200 and the precast reinforcement 300 are repeated.

In this way, a second cut line retaining wall 100c is installed side by side under the first cut line retaining wall 100a, and this is repeated below the slope 550 to top-down the cut line retaining wall of the multi-stage row. Construction in a way.

As described above, the cut portion retaining wall 100 and the construction method of the present invention cut the slope 550 to form the ground 500, and on the ground 500, the precast panel 200 and the precast reinforcement ( 300) and the retaining wall can be constructed using the tension member 400, so that the amount of backfill concrete 700 that is constructed in the field can be greatly reduced, thereby reducing the cost of construction of the site, and curing period of the backfill concrete 700. By shortening the construction air can be greatly reduced.

In addition, in the present invention, since the vertical space is formed due to the bearing wall 330 located between the precast panel 200 and the precast reinforcement 300, the fill volume increases, and the soil may be buried deeply, so the root of the plant Sufficient space to extend is provided that the vegetation plant in the land (800) can grow well.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Accordingly, such improvements and modifications are within the scope of the present invention as long as they are obvious to those skilled in the art.

1 is a cross-sectional view showing a retaining wall using a lock bolt according to the prior art;

2 is a cross-sectional view showing a retaining wall using a permanent anchor according to the prior art;

3 is a cross-sectional view showing the cut portion retaining wall according to the present invention;

4 is an exploded perspective view showing a precast panel and a reinforcement provided in the cut portion retaining wall according to the present invention;

5 is an assembled cross-sectional view showing a state of engagement of the cut portion retaining wall according to the present invention;

6A is an exploded perspective view illustrating a modified structure in which alignment jaws and holes are formed in a precast panel and a reinforcement provided in a cut portion retaining wall according to the present invention;

FIG. 6B is a partial detailed view illustrating a structure in which a protrusion and a step are formed in a precast panel and a reinforcement provided in a cut portion retaining wall according to the present invention; FIG.

FIG. 7A is an exploded perspective view illustrating a modified structure in which grooves and reinforcement walls are formed in a precast panel and reinforcement provided in a cut portion retaining wall according to the present invention; FIG.

FIG. 7B is an exploded perspective view illustrating a modified structure in which a precast panel and a reinforcing hole provided in the cut-in retaining wall according to the present invention have drainage holes and tubular bearing walls;

8A is an exploded perspective view illustrating a deformation structure in which a precast panel and a reinforcing hole provided in a cut portion retaining wall according to the present invention have drainage holes, and a horizontal wall is formed in the bearing wall;

8B is an exploded perspective view illustrating a deformation structure in which a precast panel and a reinforcement hole are provided in a cut part retaining wall according to the present invention, and a plurality of through holes are formed;

Figure 9a is an exploded perspective view showing a deformed structure having a pressure bearing wall and a bearing wall separated from each other precast reinforcement provided in the cut portion retaining wall according to the present invention;

Figure 9b is an exploded perspective view showing a deformation structure in which the precast panel and the reinforcement is provided integrally to each other in the cut portion retaining wall according to the present invention;

10 is an exploded perspective view illustrating a process of constructing a tension member, a precast panel, and a reinforcement provided on a cut retaining wall according to the present invention on a slope;

11A to 11E are explanatory diagrams showing the basic construction process step by step of the construction method of the cut portion retaining wall according to the present invention;

12A to 12C are explanatory views showing the initial construction step of the second thermal retaining wall step by step when implementing the construction method of the cut portion retaining wall according to the present invention in a bottom-up manner;

13A to 13C are explanatory diagrams showing the initial construction step of the second thermal retaining wall step by step when implementing the construction method of the cut portion retaining wall according to the present invention in a top-down method.

Description of the Related Art

1,50 ..... conventional retaining wall 10 ..... disc

20 ..... Tension 30,60 ..... Panel

40 ..... Land 42 ..... Slope

70 ..... permanent anchor 80 ..... disc

82 ..... Foundation Concrete 84 ..... Slope

90 ..... Fillet 94 ..... Concrete Backfill

100 .... Cutout retaining wall according to the present invention

100a ... cut retaining wall of the first row 100b, 100c ... cut retaining wall of the second row

200 .... Precast Panel 202 ..... Precast Panel Holes

210 .... variable pressure bearing plate 220 ..... alignment chin

222 .... overhang 230 .... through-hole

232 ..... connecting pin 250 ..... yaw groove

260 .... Drainage 270 ..... Reinforcement wall

300 .... Precast Sheath 320 .... Acupressure Wall

330 .... bearing wall 330a .... tubular

350 .... horizontal wall 360 .... through the air

370 ... pin 372 holes

400 .... Tension material 410 ..... Hemisphere pressure plate

500 .... Ground 520 .... Drilling hole

530 .... Shotcrete 550 .... Slope

600 ..... Perforator 620 .... Foundation Concrete

700 .... Backfill Concrete 800 .... Filled Land

810 ..... Tree P ..... Borderline

Claims (11)

Cutting the slopes and arranging the ground horizontally, a plurality of precast panels with holes formed side by side along the arranged ground are installed, and a precast reinforcement is installed between the precast panels and the slopes, and the holes formed in the precast panels. And a tension member is inserted into the hole of the precast reinforcement and the perforation hole formed in the ground. When the tension member is formed with fixing force in the ground by the grout, the tension member is applied to the tension member at the surface of the precast panel. The precast reinforcement has one end of the pressure wall facing the slope, and the pressure wall is formed with a hole fitted into the tension member, and the other end has a bearing wall that is in close contact with the rear surface of the precast panel. Cut section retaining wall, characterized in that provided. According to claim 1, wherein the precast panel is formed so that the variable pressure plate receiving portion on the front side to be freely change the installation angle of the tension member in accordance with the ground conditions, and formed a plurality of alignment jaw on the back of the bearing wall of the precast reinforcement And the alignment jaw is coupled to the step of the precast reinforcement having a protrusion, the alignment jaw is a plurality of through holes are formed and can be combined with the through hole formed in the bearing wall of the precast reinforcement by the connecting pin Cut wall retaining wall, characterized in that. The cut wall retaining wall of claim 1, wherein the precast reinforcement is formed in a tubular shape in which the bearing wall is symmetric in the vertical direction with respect to the hole formed in the precast panel. The method of claim 1, wherein the precast reinforcement is to include a horizontal wall in the horizontal direction connecting the upper or lower bearing walls in the vertical direction to improve the yield strength, less soil filling to reduce the retaining wall, The precast reinforcement is inclinedly mounted so that the vertical bearing wall can equally absorb the pressure applied from the precast panel.The precast reinforcement is formed with a number of through holes in the bearing wall or the bearing wall to precast reinforcement. Cut wall retaining wall, characterized in that the moisture and organic matter between the reinforcement and the adjacent precast reinforcement section is smoothly communicated, and installed after the shotcrete on the slope. The cut retaining wall according to claim 3 or 4, wherein the precast reinforcement is separated from the pressure wall and the bearing wall, respectively, and is connected through a pin to reduce the volume and facilitate handling during transportation. The cut portion retaining wall of claim 1, wherein the precast panel and the precast reinforcement are integrally formed with each other. A method of constructing a cut retaining wall using a tension member, a precast panel, and a precast reinforcement, cutting the retaining wall along a boundary line to be constructed to form a slope and horizontally arranging the ground; Filling and curing of the precast panel, the precast panel having a hole in the center and the hole is formed in the center, the acupressure wall is formed on the inclined side, and the precast reinforcement formed with a bearing wall on the precast panel side. Settling on the ground and a slope, and applying a predetermined prestress to the tension member inserted into the pressure-bearing wall hole of the precast reinforcement and the hole of the precast panel and protruding the precast panel, and precast panel and precast reinforcement. Characterized by including the step of filling between the spheres. Construction method of the cut portion retaining wall. 8. The method of claim 7, wherein the leveling of the ground horizontally comprises installing a perforated pipe in the longitudinal and transverse directions of the cut surface for smooth drainage treatment, and placing the precast panel on the ground along the boundary line. And placing and curing the foundation concrete on the ground, and applying a predetermined prestress to the tension member to fix the tension member. The precast panel further includes a step of penetrating the tension member through the precast panel and applying tension to the head. Cut-back retaining wall, characterized in that it is prevented from falling in the opposite direction of the ground and is made after the step of curing curing the backfill concrete between the pressure wall of the precast reinforcement and the slope. Construction method. A method of constructing a cut retaining wall using a tension member, a precast panel, and a precast reinforcement, cutting the retaining wall along a boundary line to be constructed to form a slope and horizontally arranging the ground, and inserting and grouting the tension member after drilling on the slope. Filling and curing of the precast panel, the precast panel having a hole in the center and the hole is formed in the center, the acupressure wall is formed on the inclined side, and the precast reinforcement formed with a bearing wall on the precast panel side. Settling on the ground and a slope, and applying a predetermined prestress to the tension member inserted into the pressure-bearing wall hole of the precast reinforcement and the hole of the precast panel and protruding the precast panel, and precast panel and precast reinforcement. Cut retaining wall of the first row, including filling between the spheres The construction of the second row of cut retaining wall on top of the cut first retaining wall of the first row, wherein the cut second retaining wall of the second row has the ground or small end of the cut retaining wall of the first row The other cuts of the ground are arranged horizontally with new ground, and the steps of constructing the cut retaining wall of the first row on the new ground are repeated to be constructed above the cut retaining wall of the first row, which is repeated above the slope. A method for constructing a cut retaining wall, characterized in that the thermal cut retaining wall is constructed in a bottom-up manner. The method of claim 9, wherein the lower retaining wall is a precast panel of the upper retaining wall is placed on the upper side of the precast reinforcement. A method of constructing a cut retaining wall using a tension member, a precast panel, and a precast reinforcement, cutting the retaining wall along a boundary line to be constructed to form a slope and horizontally arranging the ground, and inserting and grouting the tension member after drilling on the slope. Filling and curing of the precast panel, the precast panel having a hole in the center and the hole is formed in the center, the acupressure wall is formed on the inclined side, and the precast reinforcement formed with a bearing wall on the precast panel side. Settling on the ground and a slope, and applying a predetermined prestress to the tension member inserted into the pressure-bearing wall hole of the precast reinforcement and the hole of the precast panel and protruding the precast panel, and precast panel and precast reinforcement. Cut retaining wall of the first row, including filling between the spheres Construct the second row of cut retaining wall in the lower part of the cut retaining wall of the first row, wherein the cut retaining wall of the second row arranges the new ground horizontally under the cut retaining wall of the first row, Repeating the steps of constructing the cut retaining wall of the first row on the new ground is constructed below the cut retaining wall of the first row, it is repeated below the slope to construct the cut retaining wall of the multi-stage row in a top-down manner. Method of constructing cut-in part retaining wall

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