KR100653865B1 - Coupler tension type fabricated retaining wall built by connecting high intensity reinforcing bars installed in the retaining wall panel unit by coupler and prestressing those bars, and constructing method thereof - Google Patents

Abstract

        The present invention is a unit horizontal wall, a slope, a curve and a support panel, which is a unit retaining wall panel manufactured according to a predetermined standard according to the cross-sectional shape of the cut soil in order to prevent the sedimentation of the cut soil formed by the cut or fill. The unit support is installed on the cross section of the cut soil to interconnect the high-strength reinforcement installed in the unit retaining wall panel using a coupler, and is installed on the ground and installed on the lower part of the unit horizontal, inclined and curved panel to support the unit support. The present invention relates to a method for constructing a coupler-tension prefabricated retaining wall installed by introducing a prestress into the strand after installing the panel and the unit horizontal, inclined and curved panels and the strand.

Description

Coupler tension type fabricated retaining wall built by connecting high intensity reinforcing bars installed in the retaining wall panel unit by coupler and prestressing those bars, and constructing method approximately}             

        1 shows a prior art of the present invention.

        Figure 2 is a view showing a state in which a coupler tension prefabricated retaining wall construction by installing the unit retaining wall panel of the present invention.

        3 is a view showing a unit horizontal panel that is a unit retaining wall panel of the present invention.

        Figure 4 is a view showing a unit slope panel that is a unit retaining wall panel of the present invention.

        5 is a view showing a unit curve panel that is a unit retaining wall panel of the present invention.

       Figure 6 is a view showing an enlarged cross-section is installed on the rear of the unit horizontal, inclined and curved panel of the unit retaining wall panel of the present invention.

        Figure 7 is a perspective view of a unit support panel that is a unit retaining wall panel of the present invention.

        8 is a view showing a cross section of a unit support panel that is a unit retaining wall panel of the present invention.

        9 is a view showing a lower portion of the unit support panel of FIG.

       10 is a view showing the installation of the coupler tension prefabricated retaining wall through a process of assembling the unit horizontal wall, the slope, the curve and the support panel of the unit retaining wall panel of the present invention.

<Explanation of symbols for main parts of the drawings>

        A ... complexes, roads and railways B ... slopes

        10 ... gravity retaining wall 11 ... wall

        12 ... Drain 13 ... Footing

        14 ... activity board 15 ... ground

        16 ... floor concrete

        20 ... Coupler tension prefabricated retaining wall 21 ... Coupler connection

        30 ... Unit retaining panel 31 ... Drainpipe

        32 ... hook 33 ... coupler mounting groove

        34 ... Settlement 35 ... Settlement Home

        36 ... enlarged section 38 ... rear

        39.Front 44.Grooving

        45 ... Iron

        50 ... Unit horizontal panel 51 ... Horizontal plane

        52 ... Sheath tube

        60 ... Unit slope panel 61 ... Slope

        70 ... Unit Curve Panel 71 ... Curved Tangent Angle

        72 ... curve

        80 ... Unit support panel 81 ... Front bottom

        82 ... rear bottom 83 ... grouting hole

        84 ... protrusion 85 ... bottom

        86 ... Disconnect 87 ... Shear Key

        88 ... horizontal projection 89 ... vertical projection

        90. Seating area 91 ... Horizontal groove

        92 ... Vertical groove 93 ... Horizontal shear key

        94 ... upper 95 ... lower

The present invention connects the high-strength reinforcing bar installed in the unit horizontal wall, slope, curve, and support panel with a coupler, and the unit support panel installed to support the unit horizontal, slope, and curved panel and the bottom of the unit retaining wall panel. The present invention relates to a method for constructing a coupler tension prefabricated retaining wall installed so as to be resistant to earth pressure acting on the rear surface by introducing prestress to the strand after mutual penetration with the strand.

       As the unit retaining wall panel, unit horizontal, inclined, curved and support panels are manufactured by using steel formwork, and the unit horizontal, inclined and curved panels of the unit retaining wall panel are provided with a plurality of hooks on the upper part, and the upper and lower beams as a whole. The upper surface is provided with a plurality of hooks, and the front and rear to maintain a constant inclination while the grooves and convex parts are installed on both sides, respectively, at the front and rear of both sides formed a plurality of coupler installation grooves at regular intervals. While forming a plurality of coupler installation grooves at regular intervals on the front and rear of the lower surface as well as forming a plurality of concave grooves at regular intervals on the lower surface,

       The unit horizontal panel is a horizontal top and bottom surface is installed horizontally and the pattern is formed in a certain position on the upper surface to form a mark to guarantee a certain pattern and quality, and fixed at regular intervals in the middle portion of the body of the unit horizontal panel The sheath pipe is inserted into each of the fixing grooves while the grooves are installed to be inserted into the lower surface of the unit horizontal panel. The unit horizontal panel is used when the upper ground of the cut surface becomes horizontal. will be.

       The unit inclined panel is formed by a constant inclined surface of the upper surface, and is manufactured through the same process as the unit horizontal panel, the unit inclined panel is used when the upper ground of the cut soil surface is inclined or there is a step. .

       The unit curve panel is made of a curved body of the unit curve panel so that the curved tangent angle is a constant angle, the upper and lower surfaces of the unit curve panel is formed a curved portion, it is manufactured in the same way as the unit horizontal panel, The unit curve panel is intended to be applied to the case where the cut surface is a terrain with a constant curve.

        In addition, the unit support panel which is installed on the ground to support the unit horizontal, inclined and curved panel as a unit retaining wall panel is manufactured by steel formwork, protruding seating part of a certain size at a certain position on the top of the bottom portion While forming a plurality of sheath pipes through the bottom of the bottom to the fixing groove, forming a plurality of protrusions at regular intervals on the seating portion and a plurality of grouting holes at a predetermined position of the rear bottom, but the grouting hole The bottom of the unit support panel is provided with a predetermined size of the protruding shear key on both sides of the grouting hole, to form a vertical projection and a vertical groove in the lower side on both sides of the seating portion of the unit support panel, respectively, the vertical projection and The horizontal groove and the number of horizontal protrusions Home to install and, respectively, the projecting parts of both sides of the seat and has a coupler having a predetermined size at regular intervals either side of the unit supporting panel mounting groove will form a plurality of such.

       As shown in FIGS. 2 and 10, the coupler is a high-strength reinforcement formed in the coupler installation groove of the unit support panel adjacently installed while the unit support panel is installed on the ground of the lower surface of the cut soil to which the retaining wall is to be installed. The unit support panel is connected to each other and installed in the coupler installation groove, and the unit horizontal, slope and curved panels are installed on the cut surface according to the topography of the cut soil slope. After the protrusions installed in the seating portion of the unit support panel are installed so as to be inserted, the unit horizontally inclined and inclined and curved panels are installed by fastening and connecting the high-strength reinforcing bars respectively installed in the coupler installation grooves using couplers. Next, the coupler installation groove and the unit horizontal, inclined in the seating portion of the unit support panel The high strength reinforcing bars installed in the coupler installation grooves installed in the lower part of the curved panel are fastened and connected by couplers, and the sheath pipes installed in the body of the unit horizontal, inclined and curved panels are inserted into the sheath pipes installed in the unit support panel. Install a fixture in a sheath tube installed in a fixing groove installed in the body of the horizontal, inclined and curved panel, fix the strand and install a fixture in the sheath tube formed in the bottom of the unit support panel. After fixing the strands respectively, the prestress is introduced into the strands to complete the assembly of the unit retaining wall panel, and then the coupler installation grooves and the panel and the panel are connected to each other with a filler such as an expander and filled on the unit support panel. Grouting material is injected into the grouting pipe installed at the And air from the process of injection, while the units to the support panels can be firmly supported in close contact is completed, the install of the coupler tension modular retaining wall as shown in Fig. 2 so as to be discharged to the atmosphere through another grouting hole.

       An object of the present invention is to unit the horizontal wall, the slope and curve of the unit retaining wall panel manufactured in the factory according to the topography of the inclined surface of the fill section or incision consisting of straight lines and curves on the unit support panel installed on the ground to match the shape of the slope The panels are connected to each other by using a coupler, and then the sheath pipe installed in the unit horizontal, inclined and curved panel body and the sheath pipe inserted into the unit support panel are inserted through the strands, and the prestress is installed. As a method of constructing a coupler tension prefabricated retaining wall which has been introduced and assembled, the unit retaining wall panel is manufactured under strict quality control at the factory and is simply assembled and installed on the surface of the cut soil, and then interconnected and assembled using a coupler. Tension force is introduced between the support panel and the wire to prevent the wall from falling. It resists the action of earth pressure and injects the grouting material between the ground and the unit support panel through the grouting hole installed in the unit support panel so that it is in close contact with the insertion groove for installing the coupling and the panel and the panel. It is to provide a simple and precise construction method to be filled with a filler in the connection portion connected to the adjacent to form a tight assembly.

       Retaining wall using the conventional reinforced concrete is to form the footing and the wall integrally to support the back earth pressure of the retaining wall installed on the inclined surface to pour concrete, to secure the activity, conduction and support force, and to maintain the cross section of the retaining wall It consists of a structure.

       Referring to the prior art described in FIG. 1, in the retaining wall made of reinforced concrete, the footing is installed integrally with the wall on the wall 31 and the floor concrete placed on the ground to resist the earth pressure acting on the rear surface of the wall. The retaining wall was installed by pouring concrete after installing the formwork to install the active support plate to resist sliding under the footing. However, the existing reinforced concrete retaining wall has to go through the work process such as reinforcing steel, formwork, scaffolding, concrete, curing, etc. However, there are problems of environmental pollution due to noise and dust caused by external weather and construction, and concrete in particular for installing retaining walls. In winter, construction has been suspended in winter due to freezing.

The present invention has been proposed to improve the above problems, the unit retaining wall panel manufactured in the factory installed on the cut surface of the site after the connection assembly installation using a coupler, the unit horizontal, inclined and curved panel and unit support After installing and fixing the strand in the sheath pipe installed in the body of the panel, prestress is introduced to fix the tension and install the coupler tension prefabricated retaining wall.

Compared to the method of assembling the reinforcing bars and installing the formwork in the field, the construction time is shortened and the construction cost is reduced, and the production of the unit retaining wall panel, which constitutes the retaining wall, is systematically quality controlled at a certain production site. It is possible to prevent insolvent construction by using the old products, and in particular, it is possible to construct with little influence from the outside climate, thus providing a construction method for the retaining wall construction in the cold and winter seasons.

The unit retaining wall panel 30 of the present invention is a unit horizontal, inclined, curved and support panels (50, 60, 70, 80) are manufactured in a certain production site, such as a factory using steel formwork, the unit retaining wall panel 30 Unit horizontal, inclined, and curved panels (50, 60, 70) of the plurality of hooks 32 are installed on the upper part of the front surface of the upper surface (39) at a certain position to form a mark that guarantees a certain pattern and quality The pattern part 22 is installed and manufactured in the form of upper and lower beams as a whole, while the front part 39 and the rear part 38 maintain a constant inclination while the groove part 44 and the convex part 45 are respectively provided on both sides, While forming a plurality of coupler installation grooves 33 at regular intervals at the corners, a plurality of coupler installation grooves 33 are formed at regular intervals at the corners of both lower sides, and at the same time a plurality of couplers at regular intervals. Grooves (not shown) The sheath pipes 52 are respectively formed in the fixing grooves 35 while installing the fixing grooves 35 at regular intervals in the middle portions of the body of the unit horizontal, inclined and curved panels 50, 60 and 70. Inserted and manufactured to be inserted through the lower surface of the unit horizontal, inclined and curved panel (50, 60, 70) inserted,

       The unit horizontal panel 50 is made of upper and lower surfaces of the horizontal plane 51, and the unit horizontal panel is used when the upper ground of the cut soil surface becomes horizontal.

       The unit inclination panel 60 is formed with a constant inclined surface 61 of the upper surface, and is produced through the same process as the unit horizontal panel, the unit inclined panel 60 is the upper ground of the cut soil surface is inclined surface or It is to use when there is step.

       The unit curve panel 70 is made of a curved body of the unit curve panel so that the curved tangent angle 71 is a constant angle, the upper and lower surfaces of the unit curve panel forms a curved portion 72, The unit curve panel is manufactured in the same manner as the unit horizontal panel, and the unit curve panel is applied to a case where the cut surface is a terrain having a constant curve.

        In addition, the unit support panel 80 which is installed on the ground in order to support the unit horizontal, inclined and curved panels (50, 60, 70) as the unit retaining wall panel 30 is made of a steel formwork, the bottom portion (85) A plurality of sheath pipes 52 are installed through the fixing grooves 35 at the bottom of the bottom portion 85 while forming a protruding seating portion 90 having a predetermined size at a predetermined position of the upper portion, and the seating. The unit having a plurality of protrusions 84 formed at regular intervals on the part 90 and having a plurality of grouting holes 83 installed at a predetermined position of the rear bottom portion 82, wherein the grouting holes 83 are installed. The lower portion 95 of the support panel 80 is provided with a protruding shear key 87 of a predetermined size on both sides of the grouting hole 83, the lower portion on both sides of the seating portion 90 of the unit support panel 80 Vertical projections 89 and vertical grooves 92 are formed respectively, and the vertical projections In the 89 and the vertical groove portion 92, the cut portions 86 at regular intervals are placed, and then the horizontal protrusions 88 and the horizontal groove portions 91 are respectively installed, and both side surfaces of the protruding seating portions 90 and the On both sides of the unit support panel 80 is a unit retaining wall panel 30 so that a plurality of coupler installation grooves 33 of a predetermined size are formed at regular intervals.

       As shown in FIGS. 2 and 10 to be described later, the coupler installation grooves 33 of the unit support panel 80 which are installed adjacent to the unit support panel 80 are installed while installing the unit support panel 80 on the lower ground of the cut surface to which the retaining wall is to be installed. The high strength reinforcing bar (not shown) formed in the inside of the coupler is fastened and installed in the coupler installation groove 33 by using a coupler (not shown), and the series of unit support panels 80 are connected to each other and installed thereon. Select and install the unit horizontal, slope, and curved panels (50, 60, 70) according to the topography of the fill slope, which is installed in the seating portion 90 of the unit support panel (80) in a recess formed in the lower surface. After the protrusions 84 are installed to be inserted, the high-strength bars extended in the coupler installation grooves 33 of the unit horizontal, inclined and curved panels 50, 60, and 70 installed adjacently are connected to each other using a coupler. After installing The coupler installation grooves 33 installed in the seating unit 90 of the unit support panel 80 and the high-strength reinforcing bars installed in the coupler installation grooves 33 installed at the lower part of the unit horizontal, inclined and curved panels are connected to each other by a coupler. In addition, the horizontal, inclined and curved panels 50 may be inserted into and inserted into the sheath pipe 52 installed in the body of the unit horizontal, inclined and curved panels and the sheath pipe 52 installed in the unit support panel 80. A fixing hole 34 is installed in the sheath pipe 52 installed in the fixing groove 35 installed in the body of the 60, 70, 70, and the lower strand of the bottom 85 of the unit support panel 80 after fixing the strand. Fixing holes 34 are installed in the sheath tube 52 in the fixing grooves 35 formed in the fixing grooves 35 to fix the strands respectively, and then prestress is introduced into the strands to complete the assembly of the unit retaining wall panel 30, and then the coupler installation. The groove 33 and the unit retaining wall panel 30 and the panel ( 30) is filled with a filler such as an expander in the interconnected portion and the grouting material is injected at low pressure into the grouting hole 83 installed on the unit support panel 80 so that the ground and the lower part of the unit support panel are in close contact with each other. The air generated in the process of injecting while being able to be supported can be discharged to the atmosphere through another grouting hole 83 to complete the installation of the coupler tension prefabricated retaining wall 20 as shown in FIG. 2. .

       Hereinafter, the configuration and operation of the present invention will be described in detail by the accompanying drawings.

       FIG. 2 is a view illustrating a state in which a coupler tension prefabricated retaining wall is constructed by assembling and installing a unit retaining wall panel according to the present invention, wherein the unit horizontal panel 50, the unit tilt panel 60, and the unit curve panel 70 are unit support panels. 80, the unit retaining wall panel 30 is assembled and installed in accordance with the topography of the inclined surface B of the fill section or the incision in order to install a road, a railroad A, and the unit retaining wall panels 30 are vertically The high strength reinforcing bars installed in the coupler installation groove 33 are assembled and installed using a coupler, and the sheath pipe 52 installed in the body of the unit horizontal, inclined and curved panels and the sheath installed in the unit support panel 80. The prefabricated retaining wall 20 is installed by fixing the steel wires through the pipe 52 to be fixed to the anchorage 34, and then pre-stressed to fix and fix the inclined surface B of the cut soil surface as shown in FIG. The upper part In the case of flat, the unit horizontal panel 50, the upper part of the inclined surface is installed inclined unit slope panel 60, if the slope is curved unit curve panel 70 in the unit horizontal 50 and Soil flows from the inclined surface (B) by installing the unit horizontal, inclined and curved panel (50, 60, 70) to a certain height higher than the height of the inclined surface while installing in accordance with the inclined surface in combination with the inclined panel (60) Does not flow down.

       In addition, when the unit support panel 80, which supports the unit horizontal, inclined and curved panels 50, 60, and 70, is also curved, the unit support panel 80 is made small so that the curve of the unit curve panel 70 is reduced. It can be divided and supported at the part that changes to.

       3 is a view showing a unit horizontal panel that is a unit retaining wall panel of the present invention, the unit horizontal panel 50 is to be manufactured in a certain production site, such as a factory using steel formwork, by placing high-strength reinforcement in the steel formwork It is produced by pouring the high-strength concrete after installing the skeleton reinforcing bar,

       The unit horizontal panel is provided with a plurality of hooks 32 are installed on the upper part and a pattern part 22 formed with a mark to guarantee a certain pattern and quality at a predetermined position on the front surface of the upper surface, and manufactured in the form of upper and lower beams as a whole. The front side 39 and the rear side 38 are provided with grooves 44 and convex portions 45 on both sides while maintaining a constant inclination, and a plurality of coupler installation grooves at regular intervals on the front and rear edges of both sides. While forming 33, a plurality of coupler installation grooves 33 are formed at regular intervals on the front and rear edges of the lower surface, and at the same time, a plurality of concave grooves are formed on the lower surface at regular intervals. While installing the fixing grooves 35 at regular intervals in the middle portion of the body of the unit horizontal panel 50, each of the sheath pipes 52 are inserted into the fixing grooves 35 so that the lower portion of the unit horizontal panel 50 is provided. Installation is designed to be inserted into a through-up.

       The unit horizontal panel 50 is made of the upper and lower surfaces in the horizontal plane 51, the unit horizontal panel is used when the upper ground of the cut soil surface is horizontal.

       It is used to connect the adjacent unit retaining wall rebar 30 to each other by extending the high-strength reinforcement in the coupler installation groove 33.

       The hook 32 is installed to facilitate transportation and installation when the unit horizontal panel is installed as a heavy object, and epoxy in the groove 44 and the convex 45 which are vertical shear keys formed on both sides of the body of the unit horizontal panel. In order to be able to be closely connected to each other when the unit horizontal panel 50 installed adjacent to each other by applying the back and to control the relative deflection by the earth pressure to maintain the vertical while acting as a guide when installing the wall It is installed.

        4 is a view showing a unit slope panel of the unit retaining wall panel of the present invention, wherein the unit slope panel 60 is manufactured in the same manner as the unit horizontal panel of FIG. 3, except that the upper surface of the unit slope panel has a constant inclined surface. It is produced to be formed of (61).

       The unit slope panel is for use when the upper ground of the cut soil surface is inclined or there is a step.

       5 is a view showing a unit curve panel, which is a unit retaining wall panel of the present invention, the unit curve panel 70 is manufactured in the same manner as the unit horizontal panel of FIG. 3, except that the unit curve panel 70 is a curved tangent line. The body 71 of the unit curve panel is formed in a curve such that the angle 71 is a constant angle, and the upper and lower surfaces of the unit curve panel form a curved portion 72. The unit curve panel has a constant cut surface. This is to apply in the case of a terrain that has been formed.

       When there is an inclined surface where the terrain is changed from a straight line to a curved surface, the unit curve panel 70 and the horizontal or inclined panel (50, 60) are combined in accordance with the curved surface so that the cut surface slope is curved. The angle 71 is 5-40 degrees.

       FIG. 6 is a view illustrating an enlarged cross-section of a unit horizontal wall, an inclined and curved panel in the unit retaining wall panel of the present invention, wherein the enlarged cross-section 36 includes the unit horizontal, inclined and curved panel 50, 60, 70) is to enlarge the cross section of the upper portion to facilitate the installation of the handrail or soundproof wall on the enlarged cross-section (36) when installing a handrail or soundproof wall on the wall of the prefabricated retaining wall installed on the cut soil surface to be.

       7 and 8 are a perspective view showing a cross-sectional view of a unit support panel, which is a unit retaining wall panel of the present invention, wherein the unit is installed on the ground to support the lower portion of the unit horizontal, inclined, and curved panels (50, 60, 70). The support panel 80 is manufactured at the production site by steel formwork, and forms a protruding seating portion 90 having a predetermined height and area at a predetermined position on the bottom portion 85, and the seating portion 90. A plurality of sheath pipes 52 are installed in the bottom portion 85 through the fixing groove 35, and a plurality of protrusions 84 are formed at regular intervals on the upper surface of the seating portion 90. A plurality of grouting holes 83 are provided at a predetermined position of the rear bottom portion 82, but both sides of the grouting holes 83 are provided in the lower portion 95 of the unit support panel 80 in which the grouting holes 83 are installed. Each protruding shear key (87) The vertical protrusions 89 and the vertical grooves 92 are formed on both sides of the seating portions 90 of the unit support panel 80, and vertical protrusions 89 are formed on one side thereof, and the other side surfaces thereof. The vertical grooves 92 are formed in the grooves, and the cutouts 86 are disposed at regular intervals on both sides of the vertical protrusions 89 and the vertical grooves 92, and then the horizontal protrusions 88 and the horizontal grooves 91 are respectively formed. It is to be installed, and both sides of the protruding seating portion 90 and both sides of the unit support panel 80 so that a plurality of coupler installation grooves 33 of a predetermined size are formed at regular intervals.

        The protruding seating portion 90 is to form a seating portion 90 of a predetermined area so that the unit horizontal, inclined and curved panels 50, 60, 70 can be installed, on the seating portion 90 A plurality of protrusions 84 are formed so that when the unit horizontal, inclined and curved panels 50, 60, 70 are installed in the seating portion 90, the protrusions 84 and the unit horizontal, This is to allow the recessed grooves formed at the bottom of the inclined and curved panels to be fitted to each other.

       A plurality of sheath pipes 52 in the seating part 90 are installed in the body of the unit horizontal, inclined and curved panels 50, 60, 70 so as to penetrate to the lower surface of the panel 30 ( 52) is connected to each other to penetrate the strands to mutually settle the strands on the unit horizontal, inclined and curved panel and another strand is a sheath pipe installed in the fixing groove 35 of the lower portion 95 of the unit support panel 80 In order to fix the stranded wire by installing the fixing hole 34 at 52.

       A plurality of grouting holes 83 in a predetermined position of the rear bottom portion 82 is the unit support panel 80 is installed on the ground and the unit horizontal, inclined and curved panels 50, 60, 70 are installed thereon After the assembly is completed to inject a grouting material at a low pressure through the grouting hole (83) so that the ground and the lower surface of the unit support panel is in close contact with each other to improve the supporting force, the other grouting hole (83) is to provide a passage through which air between the ground and the lower surface of the unit support panel can escape when the grouting material is injected at a low pressure. If the air is not removed, the ground and the lower surface of the unit support panel are not in close contact with each other to prevent the weakening of the support force.

       In addition, protruding the shear key 87 on both sides of the plurality of grouting holes 83 is provided in the lower portion of the unit support panel 80 that the prefabricated retaining wall 20 is installed so as to strongly respond to earth pressure. As the shear key 87 is installed, the shear key is buried in the ground to prevent the prefabricated retaining wall 20 from sliding, and thus the lower surface of the unit support panel, which is the periphery of the shear key and the shear key, must be in close contact with the ground to exert resistance. Therefore, the grouting hole 83 is installed in the center of the shear key.

       Unlike the above case, even when the bottom surface is directly installed on the ground without installing the shear key, the grouting material is injected through the grouting hole so that the ground and the bottom plate are in close contact with each other to exert the supporting force.

       Vertical projections 89 or vertical grooves 92 are formed on both side surfaces of the seating portion 90 of the unit support panel 80, and spaced at both sides of the vertical projections 89 and the vertical grooves 92. The horizontal shear key acts as a guide so that the horizontal projections 88 and the horizontal grooves 91 may be installed, respectively. In order to be able to resist the inequality at the same time as a role, a constant break portion 86, that is, the vertical projection portion 89 and the vertical groove portion 92, the horizontal projection portion 88 and the horizontal groove portion 91 is the unit The horizontal protrusions 88 and the horizontal grooves 91 are installed to be cut at a predetermined length so as not to cross each other on both sides of the seating portion 90 of the support panel 80, which has a step difference in the ground so that the unit support panel ( Above when the heights are different) The horizontal protrusions 88 and the horizontal grooves 91 and the vertical grooves 92 and the vertical protrusions 89, which are installed on both sides of each unit support panel 80 which are installed in contact with each other, do not meet each other so that they are closely adjacent to each other. To be installed.

       FIG. 9 is a view showing a lower portion of the unit support panel of FIG. 7, to show that a plurality of grouting holes 83 are positioned between the shear keys 87 at a predetermined position of the rear bottom portion 82. One of the grouting holes 83 is for injecting the grouting material so that the ground and the lower surface of the unit support panel are in close contact with each other to improve the supporting force, and the other grouting holes inject the grouting material at a low pressure. This is to provide a passage through which air between the ground and the lower surface of the unit support panel can escape.

       In addition, protruding shear keys 87 on both side surfaces of the plurality of grouting holes 83 is that the coupler tension prefabricated retaining wall 20 is installed so as to cope with earth pressure strongly of the unit support panel 80. As the shear key 87 installed in the lower portion, the shear key 87 is buried in the ground to prevent the coupler tension prefabricated retaining wall 20 from sliding, so that the lower surface of the unit support panel, which is the periphery of the shear key and the shear key, is in close contact with the ground. The grouting hole 83 is installed in the center of the shear key because it can be exerted in close contact with each other.

       10 is a view showing the installation of the coupler tension prefabricated retaining wall through the process of assembling the unit horizontal wall, the slope, the curve and the support panel of the unit retaining wall panel of the present invention, the section to install the coupler tension prefabricated retaining wall 20 The coupler installation groove using a coupler is a high-strength reinforcement formed in the coupler installation groove 33 of the unit support panel 80 adjacently installed while installing the unit support panel 80 on the ground of the lower part of the fill surface ( 33) is installed by connecting the unit support panel 80 to each other in series, and select the unit horizontal, inclined and curved panels (50, 60, 70) according to the topography of the cut soil slope. Installed in such a manner that the protrusions 84 installed on the seating portions 90 of the unit support panel 80 are inserted into recesses formed in the lower surface thereof, and then the unit horizontally and inclinedly installed. And a curved panel (50, 60, 70) by using a coupler to connect the high-strength reinforcement extending in each of the coupler installation grooves 33 to each other and then install the coupler installed in the seating portion 90 of the unit support panel The high strength reinforcing bars installed in the coupler installation grooves 33 installed at the lower portions of the grooves 33 and the unit horizontal, inclined and curved panels 50, 60, and 70 are connected to each other by a coupler, and the unit horizontal, inclined and curved lines are respectively connected. The sheath pipe 52 installed in the panel body and the sheath pipe 52 installed in the unit support panel 80 are inserted into and installed in the fixing groove 35 installed in the body of the horizontal, inclined and curved panels. The fixing unit 34 is installed in the sheath tube 52, the strand is fixed, and the fixing unit is formed in the sheath tube 52 in the fixing groove 35 formed at the bottom of the bottom 85 of the unit support panel 80. 34) to fix the strands respectively, and then to the steel After the pre-stress is introduced into the stranded wire to complete the assembly of the unit retaining wall panel 30, the coupler installation groove 33, the unit retaining wall panel 30, and the panel 30 are connected to each other with a filler such as an expander. Filling and injecting the grouting material at low pressure into the grouting hole 83 installed on the unit support panel 30 so that the ground and the lower part of the unit support panel are tightly supported so as to be firmly supported. The air can be discharged to the atmosphere through another grouting hole, and a coupler tensioning retaining wall is installed.

       When the unit retaining wall panel 30, which is the unit horizontal, the slope, the curve, and the support panel 50, 60, 70, and 80 described above, is manufactured at the factory, it is intimately connected to the unit retaining wall panel 30 installed on the left and right sides thereof. Iron grooves 45 and 44 are formed on the formwork made of steel to form high strength reinforcing bars and various necessary materials are placed to form high strength concrete. Since they are formed and manufactured, they may be installed as they are, or in the case of a panel installed at a special position, that is, each unit retaining wall panel 30 installed at the outermost part of the coupler tensioning prefabricated retaining wall has another unit retaining wall panel installed adjacent to only one side. The other side is connected to the 30 and the other side is formed in the outer groove as it is formed iron grooves (44, 45) has a problem that is not beautiful in appearance, coupler tension assembly type to improve this When the steel of the unit retaining wall panel 30 to be installed on the outermost side of the steel formwork of a certain size is inserted into the portion formed with the iron grooves (44, 45) formed by pouring concrete, the iron groove is formed only on one side On the other side, the panel is not formed with iron grooves, so that the panel is manufactured at the outermost side of the prefabricated retaining wall, thereby contributing to the beautiful appearance.

       The process of assembling and installing the coupler tension assembly retaining wall 20 by assembling and installing the unit retaining wall panel 30 will be described below.

        Arranging the ground to assemble the retaining wall;

        While installing the unit support panel 80 manufactured at the factory on the ground on the ground and inserting the strand in the sheath pipe 52 installed in the fixing groove installed in the lower portion of the unit support panel 80 to the seating portion 90 Extending and connecting the high-strength reinforcing bars installed in the coupler installation grooves 33 of the unit support panel 80 installed adjacently while being in close contact with the horizontal shear key 93 installed adjacently by a coupler;

       The recess 90 formed in the lower portion of the unit horizontal, inclined and curved panels 50, 60, and 70 in accordance with the topography of the inclined surface B on the unit support panel 80 is seated 90 of the unit support panel 80. While inserted into the projecting portion 84 of the stiffening line is provided in the body of the sheath pipe 52 installed in the body of the unit horizontal, inclined and curved panel (50, 60, 70) is extended through Protruding the installed fixing groove (35);

       The coupler installation grooves 33 and the couplers of the unit horizontal, inclined and curved panels installed adjacent to each other are used to couple and secure the high-strength reinforcement to each other, and are installed below the unit horizontal, inclined and curved panels 50, 60 and 70. Couplers using the high-strength reinforcing bar installed in the coupler installation groove 33 while the coupler installation groove 33 and the coupler installation groove 33 installed on both sides of the seating portion 90 of the unit support panel 80 to match. Fixing the interconnection;

        Filling the connection portion between the coupler installation groove 33 and the unit retaining wall panel 30 with a filler such as an expansion material to be closely assembled;

       Pressure-injecting a grouting material into the grouting hole (83) formed in the unit support panel (80) so as to be in close contact with the ground and the lower portion of the unit support panel;

       Introducing pre-stress into the strands installed in the sheath pipe (52) to settle in the fixing holes (34) installed in the fixing grooves (35) of the unit horizontal, inclined and curved panels, and filling the filling grooves in the fixing grooves (35). It is to install the coupler tension prefabricated retaining wall.

The present invention is assembled after the unit retaining wall panel manufactured through quality control in the factory according to the terrain of the inclined surface and interconnected the high-strength reinforcement with a coupler, inserting the stranded wire in the sheath pipe installed in the body of the unit retaining wall panel, prestressed By improving the cross-sectional force to resist the earth pressure acting on the prefabricated retaining wall, by introducing a prestress can reduce the cross-section of the unit retaining wall panel to reduce the amount of reinforcing steel and concrete, and to fit the terrain of the slope Unit horizontally, inclined and curved panel can be installed freely according to the radius of curvature, and retaining wall can be installed without being influenced by external temperature, so it is an economical and efficient retaining wall construction method that can be constructed in winter and in the cold will be.

Claims (9)

    When installing the retaining wall on the slope of the fill and cut sections, install the foundation concrete on the ground, install the unit support panel on the ground, and then install the unit horizontal panel, unit slope panel and unit curve panel on the unit support panel according to the topography of the slope. Optional assembly           In the upper part, a plurality of hooks are installed, and at a certain position on the front surface of the upper part, a pattern part is formed to form a mark that guarantees a certain pattern and quality. However, a plurality of hooks are installed on the upper surface, while the front and rear to maintain a constant inclination while installing the groove and the iron on both sides, respectively, forming a plurality of coupler installation grooves at regular intervals on the front and rear of both sides Forming a plurality of coupler installation grooves at regular intervals on the front and rear of the lower surface, and at the same time a plurality of concave grooves at regular intervals on the lower surface, the middle portion of the body of the unit horizontal, inclined and curved panel Insert the sheath pipes into the fixing grooves while installing the fixing grooves at regular intervals therein. Couple the high strength reinforcing bars installed in the coupler installation grooves installed in the unit horizontal wall, slope curve and support panel, the unit retaining wall panel manufactured to be inserted through the lower surface of the unit horizontal, inclined and curved panel, and the unit horizontal, In the coupler tension prefabricated retaining wall which installs the prefabricated retaining wall which introduces the prestress and improves the cross-sectional force after inserting the strand into the sheath pipe installed in the body of the inclined and curved panel and the unit support panel.         The unit slope panel is manufactured by inclining the upper surface at a constant inclination, the curved panel is a high-strength reinforcement installed in the unit retaining wall panel, characterized in that the body is made to be constantly curved by a curved tangent angle of 5 to 40 degrees Coupler tension prefabricated retaining wall interconnected with coupler and installed with prestress. delete delete        The method of claim 1,        The unit support panel is to be manufactured in the workshop by placing a high-strength reinforcement in the steel formwork and cast high-strength concrete, to form a protruding seating portion having a constant height and area at a constant position on the bottom portion, the seating A plurality of sheath pipes are installed in the part through the fixing grooves at the bottom of the bottom part, and a plurality of protrusions are formed on the upper surface of the seating part at regular intervals, and a plurality of grouting holes are provided at a predetermined position of the rear bottom part. Protruding shear keys of a predetermined size are respectively provided on the lower part, each of the vertical protrusions and the vertical grooves are formed on both sides of the seating portion of the unit support panel, and the cutouts are disposed at regular intervals on both sides of the vertical protrusions and the vertical grooves. Next, the horizontal projections and the horizontal grooves are respectively installed, and the amount of the protruding seats The high strength reinforcing bars installed in the unit retaining wall panel are characterized by the formation of a plurality of coupler installation grooves of a predetermined size at regular intervals on both sides of the unit support panel at the edge and the unit supporting panel, and the prestress is installed to introduce them. One coupler tension prefabricated retaining wall.        The method of claim 4, wherein        One of the plurality of grouting holes is for injecting the grouting material so that the ground and the lower surface of the unit support panel can be in close contact with each other, and the other hole is used for injecting the grouting material. Coupler tension prefabricated by connecting couplers with high strength reinforcing bars installed in the unit retaining wall panel, which is installed to provide a passage through which air between the unit support panel and the lower surface can escape. Retaining wall.        The method of claim 4, wherein        Installing the horizontal projections and the horizontal grooves at regular intervals on both sides of the vertical protrusions and the vertical grooves, and then installing the horizontal protrusions and the horizontal grooves, respectively, is adjacent to each other when there are different heights of the ground when the unit support panel is installed on the ground. The high-strength reinforcement installed in the unit retaining wall panel is characterized in that the horizontal protrusions and the horizontal grooves and the vertical grooves and the vertical protrusions installed on both sides of each unit support panel are installed to be in close contact with each other. Coupler tension prefabricated retaining wall which is connected and installed with prestress.         The method of claim 1,        Coupled tension retaining prefabricated retaining wall is installed by introducing a prestress and interconnecting the high-strength reinforcing bar installed in the unit retaining wall panel, characterized in that the enlarged cross section of a predetermined area on the body of the unit horizontal, inclined and curved panel.        In the construction method for installing the retaining wall on the inclined surface formed by the fill and cut to install various complexes, railways and roads,        a) arranging the ground to assemble the retaining wall;        b) while installing the unit support panel 80 manufactured at the factory on the ground on the ground and inserting a stranded wire into the sheath pipe 52 installed in the fixing groove installed in the lower portion of the unit support panel 80 to extend to the seating site; And installing the high strength reinforcing bars installed in the coupler installation grooves of the unit support panel installed adjacent to each other while being in close contact with the horizontal shear key installed adjacently.        c) while inserting the concave groove formed in the lower portion of the unit horizontal, inclined and curved panel (50, 60, 70) in accordance with the topography of the inclined surface (B) on the unit support panel 80 to the projection of the seating portion of the unit support panel Protruding the stranded wire protruding from the seating part into a sheath tube installed in the body of the unit horizontal, inclined and curved panels to protrude into a fixing groove installed in the body;        d) Coupler installation grooves and the unit support panel installed on the lower portion of the unit horizontal, slope and curved panel while fixing and connecting high strength reinforcement using the coupler installation grooves and couplers of the adjacent unit horizontal, inclined and curved panels. Fixing the high strength reinforcing bars installed in the coupler installation grooves by using a coupler while matching the coupler installation grooves installed at both edges of the seating grooves;        e) filling the connection portion between the coupler installation groove and the unit retaining wall panel with a filler such as an expansion material so as to be closely assembled;        f) pressure-injecting a grouting material into the grouting hole formed in the unit support panel so as to be in close contact with the ground and the lower portion of the unit support panel; And        g) in the unit retaining wall panel, characterized in that the step of introducing the stress to the strand installed in the sheath pipe, the step of fixing in the anchorage installed in the fixing groove of the unit horizontal, inclined and curved panel and filling with filler in the fixing groove. Coupler tension prefabricated retaining wall construction method by interconnecting the installed high-strength reinforcement with coupler and introducing prestress.        The method of claim 8,         Coupler tension prefabricated retaining wall installed by introducing a prestress and interconnecting the high-strength reinforcing bars installed in the unit retaining wall panel, characterized in that an enlarged cross section is installed to install a soundproof wall or railing on top of the unit horizontal, inclined and curved panels. Construction method.

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