KR101801916B1 - Precast concrete panel for breast wall and method for constructing retaining wall using the same - Google Patents

Abstract

The present invention may be embodied as a reinforcement having a smaller size than the body on a first surface of the body and having an outer surface inclined at a first angle with respect to a first surface of the body, At least a portion of the second surface of the body portion facing the reinforcing portion and extending to correspond to a lower surface of the body portion; And at least one lamination hole provided at an upper surface and a lower surface of the body portion and corresponding to each other to connect upper and lower stacked bodies by a connecting pin, And a second fixing hole passing through the body portion to correspond to the first fixing hole is provided in the body portion, and a third fixing hole corresponding to the second fixing hole is provided in the supporting portion, Wherein the reinforcing portion has a rectangular cross-section in the longitudinal direction, and the support portion is formed in a first direction from the first surface to the second surface of the body portion, The present invention relates to a precast concrete panel for a retaining wall having a trapezoidal cross section.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a precast concrete panel for a retaining wall, and a method of constructing a retaining wall using the precast concrete panel.

The present invention relates to a precast concrete panel for a retaining wall and a method of constructing a retaining wall using the precast concrete panel, and more particularly, to a precast concrete panel for a retaining wall having improved resistance to earth pressure and a method of constructing a retaining wall using the precast concrete panel.

Generally, a wall that resists soil pressure so that the soil does not collapse is called a 'retaining wall'. Among these retaining walls are retaining walls using permanent anchors, retaining walls using rock bolts or soilless nails (hereinafter collectively referred to as "rock bolts").

These retaining walls are made of stepped and upright type (laminated type), and a concrete panel made of a suitable thickness and a rectangular parallelepiped is fixed along the slope of the slope using a permanent anchor to cover the slope of the slope, The situation will be prevented.

The bending moment acting on the retaining wall of the conventional reinforced concrete retaining wall used by the civil engineer is roughly proportional to the square of the height of the retaining wall. Therefore, in order to secure the rigidity against the bending moment, The cross-sectional area and the amount of rebar placed in the wall greatly increase according to the height of the retaining wall. Therefore, it takes a lot of concrete and expensive rebar, which increases the construction cost and there are many defects caused by difficulty in construction. There is a risk of collapse of the retaining wall due to poor construction.

In order to prevent collapse of the slope, the conduction moment should be reduced to the minimum and the resistance moment should be increased to the maximum. Since safety measures are required, the slope of the slope should be set not more than the angle of repose, If the height of the section is large, it is necessary to make the slope slower as it goes down, and the most problem of slope safety is related to the drainage, which is caused by groundwater, rainwater or snowfall If the drainage is not good in the land mowing or soil piling, the water penetrates into the soil to increase the unit weight of the soil and increase the conduction moment. In addition to weakening the soil near the failure surface, the resistance moment And even if the water does not penetrate into the soil, Due to this pressure by a higher salaries the surface or the upper surface there is a problem that it can cause damage because it increases the conduction moment.

As a structure of the retaining wall using the permanent anchor and a construction method using the retaining wall, the retaining wall structure using the permanent anchor and the precast concrete panel and the method of constructing the retaining wall are well known in domestic patent No. 10-525156. On the other hand, in the case of the present patent, first, the foundation concrete is laid on the ground where the retaining wall will be installed, and the concrete is laid, the fixing pin is inserted into the laid foundation concrete and then fixed to the hole formed in the bottom surface of the panel. The concrete is cured by pouring the second concrete, so that the construction period takes a long time. In addition, when the pin is inserted deeper than the proper value, it is difficult to modify it. Therefore, it is necessary to remove the concrete laid on the foundation and then re-construct it, so that an additional portion of the construction cost is generated. In addition, There is a gap between the panel and the panel, which causes the gravel and the soft soil to be discharged through the gap between the panel and the panel.

Therefore, the resistance to the earth pressure is improved and the durability is improved while performing the construction of the retaining wall more efficiently. At the same time, various studies have been conducted on the precast concrete panel and the method of constructing the retaining wall using the same.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a precast concrete panel for a retaining wall capable of restraining soil activity by enhancing the resistance to the earth pressure and a method of constructing a retaining wall using the precast concrete panel.

Another object of the present invention is to provide a precast concrete panel for a retaining wall and a method of constructing a retaining wall using the same, which can reduce the number of permanent anchors installed and provide a beautiful appearance by using a concrete panel having a new fixed structure .

Another object of the present invention is to provide a precast concrete panel for a retaining wall capable of efficiently performing a retaining wall construction by omitting a separate fixing member by providing a structure in which a concrete panel is installed on a slope in an independent manner, This is to provide a method.

According to an aspect of the present invention, embodiments of the present invention include: a plate-shaped body portion having a first surface and a second surface opposing the first surface; A reinforcing portion having a smaller size than the body portion on a first surface of the body portion and having an outer surface inclined at a first angle with respect to a first surface of the body portion; At least a portion of the second surface of the body portion facing the reinforcing portion and extending to correspond to a lower surface of the body portion; And one or more lamination holes provided on the upper and lower surfaces of the body portion and corresponding to each other to connect the vertically stacked body portions by the connection pins.

The reinforcing portion may include a first fixing hole passing through the reinforcing portion, and the body portion may include a second fixing hole penetrating the body portion to correspond to the first fixing hole, And the first to third fixing holes form a path through which the reinforcing portion is formed, the reinforcing portion being rectangular in cross section in the longitudinal direction, and the supporting portion is provided on the first surface of the body portion And a cross section in a first direction toward the second surface may be provided in a trapezoidal shape.

Wherein the body portion further includes a pair of drain holes formed to penetrate the body portion at positions corresponding to each other with the support portion interposed therebetween, and a path extending from the first hole to the third hole, And the pair of drain holes are spaced apart from each other at equal intervals with the passage therebetween, wherein the diameter of the drain hole is smaller than the diameter of the pass .

And a plurality of fastening protrusions protruding outwardly from the second surface are formed on the second surface of the body portion, the fastening protrusions are provided on both sides of the support portion, corresponding to each other with the support portion interposed therebetween, The body portion may be vertically stacked so that the upper surface and the lower surface of the body portion face each other, and may be fixed by a connection pin inserted into the lamination hole.

The upper and lower surfaces of the support portion are provided with coupling grooves recessed inwardly from the upper surface and the lower surface of the support portion at positions corresponding to each other. The upper and lower surfaces of the support portion are coupled with the connection grooves of the upper and lower stacked body portions, Can be fixed by a connecting rod.

The connecting rod has a rod member having a plurality of elongated grooves extending in the lengthwise direction, a rod member having a larger area than an end surface of the rod member at one end and the other end of the rod member, Wherein the support flange has a circular cross section and the outer periphery of the support flange corresponds to the edge of the support portion, The support flange may extend from the rod member so as to be gradually enlarged in area, and the connection protrusion may be provided at a smaller height than the connection groove.

The connecting rod may further include a handle portion provided at a central portion of the outer surface and made of a material different from that of the connecting rod. The rod member may include a step portion recessed inwardly from a central portion of the rod portion. And may be provided with the same outer surface as the outer surface of the rod member

Wherein the rod member comprises at least one of stainless steel, polypropylene (PP), polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS), and the handle is made of thermoplastic polyurethane (TPU) And the handle portion is integrally formed by injection of a rubber insert, the support flange is made of a rubber material, and an elastic member made of the same rubber material as the support flange may be provided at a distal end of the connection projection.

A plurality of fastening protrusions provided on the body portion are fastened to the connecting bracket to connect the adjacent body portions to each other, and the connecting bracket has a plurality of fastening protrusions, which contact the second surface of the body portion and fasten to the fastening protrusions, And a pair of side members bent in a direction spaced apart from the second surface at upper and lower portions of the main member, respectively.

The connecting bracket may have a U-shaped cross section with respect to the first direction, and an extended length of the side member may be longer than a fastening protrusion protruding through the fastening groove.

And a front cover part provided on a first surface of the body part to cover a reinforcing part provided on a lower side of the first surface, wherein the front cover part comprises a plurality of plate-shaped blocking members spaced apart from each other and arranged in parallel to each other, At least one frame for connecting and fixing the member, a leg member protruding toward the body portion so as to be perpendicular to the blocking member and separating the blocking member from the body portion, As shown in Fig.

Wherein the shielding member comprises a front shielding member corresponding to a width of the first surface of the body and arranged to be spaced apart from and parallel to the first surface, And a pair of end frames connecting ends of the plurality of aligned blocking members, respectively, and a pair of fastening frames connecting the inner surfaces of the blocking members and spaced inward from the end frame.

The leg members may be provided at four positions on the upper and lower sides of the fastening frame, respectively, and the cover fastening portions may be respectively provided at the ends of the leg members to be fastened to the first face of the body portion.

The shielding member may include a front surface that is provided to correspond to the width of the first surface of the body portion and is parallel to the first surface and faces the body portion and a front surface that is spaced apart from the first surface of the body portion, And a side blocking member that covers the front side blocking member and the spaced side between the first side of the body and the side blocking member that is smaller than the front blocking member.

Wherein the frame includes four end faces of a plurality of aligned front shield members and four fastening frames spaced apart from each other and connecting inner faces of the front shield member, And the leg members connected to the fastening frame may be integrally formed to have a U-shaped cross section perpendicular to the first direction.

Wherein the cover fastening portion is formed to extend in a direction perpendicular to the leg member at the end of each of the leg members coupled to the first surface of the body portion and extending in a direction parallel to the front blocking member, The fastening portions are provided inward so as to face each other, and the cover fastening portions provided in the front blocking member may be provided outward so as to face both end portions.

 And a front cover part provided on a first surface of the body part to cover a reinforcing part provided on a lower side of the first surface, wherein the front cover part comprises a plurality of plate-shaped blocking members spaced apart from each other and arranged in parallel to each other, At least one frame for connecting and fixing the member, and a cover fastening part connected to the blocking member and being engaged with the body part to be fastened.

Wherein the shielding member comprises a front shielding member spaced apart from and aligned with the first surface of the body portion and a top surface and a bottom surface spaced apart from each other between the front shielding member and the first surface of the body portion, And a top and bottom shielding member having a size corresponding to a width of the body portion, wherein the frame has a U-shaped cross-section along the first direction, and the frame has two And the cover fastening part is coupled to the first surface of the body part and is vertically connected at both ends of the fastening frame, but may extend so as to face each other.

As described above, according to the present invention, it is possible to provide a precast concrete panel for a retaining wall and a method of constructing a retaining wall using the same, wherein the resistance against the earth pressure is improved and the ground activity can be suppressed.

Also, according to the present invention, there is provided a precast concrete panel for a retaining wall capable of reducing the number of permanent anchors installed and providing a beautiful appearance by using a concrete panel having a new fixed structure, and a method of constructing a retaining wall using the same .

According to another aspect of the present invention, there is provided a precast concrete panel for a retaining wall capable of efficiently performing a retaining wall construction by omitting a separate fixing member by providing a structure in which a concrete panel is installed on a slope in a self-supporting manner, and a retaining wall construction method using the same can do.

1 is a perspective view of a precast concrete panel for a retaining wall according to an embodiment of the present invention.
Fig. 2 is a perspective view showing the back surface of Fig. 1. Fig.
3 is a front view of Fig.
4 is a side view of Fig.
Fig. 5 is a top view of Fig. 1; Fig.
FIG. 6A is a schematic view of a precast concrete panel for a retaining wall according to an embodiment of the present invention installed using a permanent anchor. FIG.
FIG. 6B is a view schematically showing a precast concrete panel for a retaining wall according to an embodiment of the present invention installed using a soil nailing.
7 is a view illustrating a connection and fixing of neighboring retaining wall precast concrete panels according to an embodiment of the present invention.
8 is a schematic view showing the back surface of the precast concrete panel for retaining wall shown in FIG.
Fig. 9 is a side view of Fig. 7. Fig.
Figure 10 is a perspective view of the connecting bracket of Figure 7;
11A is a perspective view of the connecting rod of Fig.
11B is a perspective view of a connecting rod according to another embodiment of the present invention.
11C is a perspective view of a connecting rod according to another embodiment of the present invention.
11D is another sectional view taken along line AA of FIG. 11C.
12 is a perspective view of a precast concrete panel for a retaining wall according to another embodiment of the present invention.
13 is a front view of Fig.
14 is a side view of Fig.
15 is a top view of Fig.
FIG. 16 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 12 connected and fixed.
17 is an exploded perspective view of a precast concrete panel for a retaining wall having a front cover according to another embodiment of the present invention.
18 is a perspective view showing the assembled state of Fig.
19 is a front view of Fig.
FIG. 20 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 17 installed using a permanent anchor.
21 is an exploded perspective view of a precast concrete panel for a retaining wall having a front cover according to another embodiment of the present invention.
22 is a perspective view showing the assembled state of Fig.
Fig. 23 is a front view of Fig. 21. Fig.
24 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 21 installed using a permanent anchor.
25 is an exploded perspective view of a precast concrete panel for a retaining wall having a front cover according to another embodiment of the present invention.
26 is a perspective view showing the assembled state of Fig.
27 is a front view of Fig. 25. Fig.
28 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 25 installed using a permanent anchor.

The details of other embodiments are included in the detailed description and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms. In the following description, it is assumed that a part is connected to another part, But also includes a case in which other media are connected to each other in the middle. In the drawings, parts not relating to the present invention are omitted for clarity of description, and like parts are denoted by the same reference numerals throughout the specification.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a precast concrete panel for a retaining wall according to an embodiment of the present invention. FIG. 2 is a perspective view showing the back surface of FIG. 1, FIG. 3 is a front view of FIG. 1, FIG. 4 is a side view of FIG. 1, and FIG. 5 is a top view of FIG.

The present invention relates to a precast concrete panel 100 for a retaining wall wherein the precast concrete panel 100 for retaining walls has a first surface 110a and a second surface 110b opposite to the first surface 110a, A plate-shaped body portion 110 having a plate-like shape; The first surface 110a of the body 110 is smaller than the body 110 and the first surface 110a of the body 110 is inclined at a first angle? A reinforcing portion 120 having an outer surface; At least a portion of the second surface 110b of the body 110 faces the reinforcing portion 120 and extends to correspond to the lower surface of the body 110; And at least one lamination hole 140 provided at the upper and lower surfaces of the body 110 and corresponding to each other to connect the vertically stacked body 110 with the connection pins .

The reinforcing part 120 is provided with a first fixing hole 121 passing through the reinforcing part 120 and the body part 110 is provided with a fixing hole 121 corresponding to the first fixing hole 121, And a third fixing hole 131 corresponding to the second fixing hole 111 is formed in the supporting part 130 so that the first to third fixing holes 111, (121, 111, 131) can form a path by communicating with each other. The reinforcing part 120 is rectangular in cross section in the longitudinal direction and the supporting part 130 is disposed on the first surface 110a of the body part 110 to face the second surface 110b, Sectional shape may be provided in a trapezoidal shape.

The precast concrete panel 100 for retaining walls according to the present embodiment includes a body 110 formed in a rectangular shape and having a first surface 110a as a front surface and a second surface 110b as a back surface and having a predetermined thickness, A reinforcing part 120 provided on the first surface 110a of the body part 110 and a supporting part 130 provided on the second surface 110b of the body part 120. [

The body part 120 includes a pair of drain holes 112 provided above the reinforcing part 120 and passing through the body part 120 with the reinforcing part 120 interposed therebetween, And a fastening protrusion 113 protruding outward from the second surface 110b of the part 110 and provided above the drain hole 112 may be provided. The fastening protrusion 113, the drain hole 112, and the reinforcing portion 120 may be provided in this order from the upper side with respect to the side surface of the body portion 120. [ The upper end of the support part 130 may be provided at a position corresponding to the pair of drain holes 112.

The reinforcing portion 120 may be located at a substantially central portion on the first surface 110a of the body portion 110 and may be disposed at a lower position relative to the longitudinal direction of the body portion 110. [ The reinforcing portion 120 may include a first outer surface inclined at a first angle? 1 with respect to the first surface 110a of the body portion 110 and a second outer surface inclined at a first angle? 1 with respect to the first surface 110a of the body portion 110. [ And a first contact surface to be attached. The reinforcing portion 120 may have a first fixing hole 121 at the center thereof.

The upper end of the first outer surface of the reinforcing portion 120 is simultaneously a first upper end portion of the contact surface. The upper portion of the reinforcing portion 120 is provided without a thickness, and the first outer surface of the reinforcing portion 120, The lower end of the first outer surface of the reinforcing portion 120 and the first contact surface are spaced apart from each other so as to be inclined with respect to the first surface 110a of the body 110 at a first angle? And can be provided side by side. For example, the side surface of the reinforcing portion 120 may be provided in the shape of a right triangle. The support portion 130 is provided on the second surface 110b of the body portion 110 and is provided at a central portion with respect to the width direction of the body portion 110, To a position corresponding to the lower end of the body portion 110. [0031] As shown in FIG.

The support portion 130 may include a second contact surface contacting the body 110 and a second outer surface spaced apart from and facing the second contact surface. In the support portion 130, the second contact surface and the second outer surface may have a rectangular shape, and the second contact surface may have a wider width. For example, the supporting portion 130 may have a rectangular cross section in the longitudinal direction and a trapezoidal cross section in the width direction. For example, the support 130 may have a thickness greater than that of the body 110.

The support portion 130 according to the present embodiment is provided on the lower side of the second surface 110b of the body portion 110 so that the body portion 110 can be supported on the inclined surface without a separate auxiliary member. In other words, the support part 130 is formed such that the front surface of the precast concrete panel, which is the first surface 110a, is flattened, and on the back surface which is the second surface 110b, . Accordingly, the support part 130 functions as a chair for supporting the body part 110 in the lateral direction of the precast concrete panel 100, so that the body part 110 can be vertically installed .

The body 110 may further include a pair of drain holes 112 extending through the body 110 at positions corresponding to each other with the support 130 interposed therebetween. The body 110 may include a second fixing hole 111 provided at a lower side than the drain hole 112 at a center between the drain holes 112, 111 are formed on the first surface 110a of the body 110 and the first fixing holes 121 of the reinforcement 120 and the second surface 110b of the body 110, May be provided at a position corresponding to the third fixing hole (131) of the fixing member (130).

The path formed by extending from the first fixing hole 121 to the third fixing hole 131 may be inclined with respect to the body 110 so as to be downward from the first fixing hole 121 . That is, the path formed by the first fixing hole 121, the second fixing hole 111, and the third fixing hole 131 is inclined downward relative to the first direction so that the precast concrete panel 100 can be easily fixed.

The pair of drain holes 112 are spaced apart from each other at equal intervals by a path formed by the first fixing hole 121, the second fixing hole 111 and the third fixing hole 131, The diameter of the drain hole 112 may be smaller than the diameter of the path.

FIG. 6A is a schematic view of a precast concrete panel for a retaining wall according to an embodiment of the present invention installed using a permanent anchor, FIG. 6B is a cross-sectional view of a precast concrete panel for a retaining wall according to an embodiment of the present invention, Is installed using soilless nailing. As shown in FIG.

6A and 6B, the precast concrete panel 100 according to the present embodiment may be provided on the inclined surface G. At this time, the precast concrete panel 100 may be provided on the inclined surface G by the permanent anchor 20 or the soil nailing 30, Can be fixed to the inclined surface (g). The permanent anchor 20 or the soil nailing 30 passes through an inclined path formed by the first fixing hole 121, the second fixing hole 111 and the third fixing hole 131, And may protrude outward of the fixing hole 121 and be fixed. The path formed by the first fixing hole 121, the second fixing hole 111 and the third fixing hole 131 is formed by the permanent anchor 20 or the soil nail 20 with respect to the inclination of the inclined paper a, So that a more rigid retaining wall can be formed by providing the precast concrete panel 100 in a balanced manner so as not to be shaken by the inclined gaps g.

7 is a view showing a connection and fixing of neighboring retaining wall precast concrete panels according to an embodiment of the present invention, and FIG. 8 is a view schematically showing the back surface of the precast concrete panel for retaining wall shown in FIG. And Fig. 9 is a side view of Fig. Fig. 10 is a perspective view of the connecting bracket of Fig. 7, and Fig. 11a is a perspective view of the connecting rod of Fig. 7;

The precast concrete panel 100 may be disposed laterally and vertically stacked when installed as a retaining wall. The precast concrete panel 100 may be fixed by a connecting protrusion 113 provided on a second surface 110a of the body 110 and a connecting bracket 150 when the precast concrete panel 100 is disposed to the left or right. The fastening protrusions 113 provided on the respective body parts 110 can be aligned and fixed in the left and right direction by one connecting bracket 150. [

The second surface 110b of the body 110 further includes a plurality of fastening protrusions 113 protruding outward from the second surface 110b. On the upper side of the support portion 130, and on both sides of the support portion 130 in correspondence with each other. The plurality of fastening protrusions 113 of the body 110 may be coupled to the connecting bracket 150 to connect the adjacent body parts 110 to each other.

The fastening protrusions 113 may be provided on the upper side of the support part 130 and spaced apart from each other with the support part 130 interposed therebetween. For example, the fastening protrusion 113 may be provided at one upper portion of the support portion 130, separated from the upper portion of the upper portion by two, and may have two spaced apart from the upper portion at the upper portion thereof.

The connection bracket 150 has a plurality of coupling grooves 153 corresponding to the coupling protrusions 113 to contact the second surface 110b of the body 110 and to fasten the coupling protrusions 113 And a pair of side members 152 bent in a direction away from the second surface 110b of the body 110 at upper and lower portions of the main member 151, . For example, the connecting bracket 150 is formed in a U-shape in section in the first direction, and the extended length of the side member 152 is longer than a fastening protrusion 113 protruding through the fastening groove 153 It can be long.

The main body 151 of the connecting bracket 150 is in contact with the second surface 110b of the body 110 and the fastening protrusion 113 is fastened to the fastening hole 153 of the main body 151 As shown in FIG. For example, a screw thread may be formed on the outer surface of the fastening protrusion 113, and may be fastened and fixed using a nut 50 or the like.

The precasting concrete panel 100 according to the present embodiment is provided with a connecting bracket 150, for example, a channel at a portion of the precasting concrete panel 100 which abuts on the upper end of the supporting portion 130 having a pedestal function, Can be fixed. In this case, the body 110 may be provided with a fastening protrusion 113, for example, a bolt. When the bolt is inserted into the fastening groove 153 of the connecting bracket 150 and fastened, The position between the right and left can be guided and the coupling can be further strengthened.

The body 110, which is connected and fixed in the lateral direction by the connecting bracket 150, may be vertically stacked. The body portion 110 of the precast concrete panel 100 may be connected to the connection pin 40 inserted into the lamination hole 140 when the upper and lower surfaces of the body portion 110 are stacked so as to face each other. ).

One configuration of the body portion 110 in which a plurality of the body portions 110 are fixed by the connecting bracket 150 includes a connecting pin 40 in each of the lamination holes 140 provided on the upper surface of each body portion 110 . The connection pin 40 may have a length longer than the lamination hole 140 and may be inserted into the lamination hole 140 while partially protruding outside the lamination hole 140. Another structure of the body portion 110 in which a plurality of members are fixed to the left and right is a lamination hole 140 formed on the lower surface of the body portion 110 and stacked on the body portion 110 having the connection pin 40. [ The connection pin 40 may be inserted into the connection pin 40.

The body 110, which is vertically stacked by the connecting pin 40, can be fixed more firmly by the connecting rod 160. The connecting rod 160 may connect and fix the supporting part 130 provided on the upper and lower stacked body parts 110.

The upper and lower surfaces of the support part 130 may have coupling grooves 132 concaved inward from the upper and lower surfaces of the support part 130 at positions corresponding to each other. The connecting rod 160 is fastened to the connecting groove 132 of each of the upper and lower stacked body parts 110 to fix the upper and lower stacked body parts 110 therebetween.

The connecting rod 160 has a cylindrical bar member 161 and a larger area than the end surface of the bar member 161 at one end and the other end of the bar member 161, A support flange 163 contacting the lower surface of the support flange 163 and a connection protrusion 162 protruding from the support flange 163 and inserted into the connection groove 132.

The support flange 163 is circular in cross section and the outer periphery of the support flange 163 corresponds to the edge of the support portion 130. The support flange 163 extends from the rod member 161, So that the area can be enlarged. The connection protrusions 162 may have a smaller height than the connection recesses 132 and may be inserted into the connection recesses 132.

11B is a perspective view of a connecting rod according to another embodiment of the present invention.

Referring to FIG. 11B, the connecting rod 160 'may include a rod member 161' having a plurality of extending grooves extending in the longitudinal direction. The extension grooves may be spaced apart from each other by a predetermined distance in the longitudinal direction of the spring member 161 '. The extended groove portion may be provided in a concave shape inwardly from the outer surface of the rod member 161 'and by imparting the surface roughness of the rod member 161', a grip feeling during operation using the rod member 161 ' Can be improved.

FIG. 11C is a perspective view of a connecting rod according to another embodiment of the present invention, and FIG. 11D is another sectional view taken along line A-A of FIG. 11C.

11B and 11C, the connecting rod 160a may further include a handle 165 formed at a central portion of the outer surface of the connecting rod 160a and made of a material different from the connecting rod 160a. In the connecting rod 160a, the rod member 161a includes a stepped portion s which is recessed inwardly from the center portion. The handle portion 165 is provided to cover the stepped portion s And may be provided on the same outer surface as the outer surface of the rod member 161a.

For example, the rod member 161a may include one or more of stainless steel, polypropylene (PP), polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS), and the handle portion 165 may be made of thermoplastic polyurethane TPU (thermoplastic polyurethane), the rod member 161a and the handle portion 165 may be integrally formed by injection of a rubber insert. The supporting flange 163a may be made of a rubber material and an elastic member 162a made of the same rubber material as the supporting flange 163a may be provided at a distal end of the connecting protrusion 162. [

The connecting rod 160a according to the present embodiment can fix the vertically stacked body 110. The elastic member 162a provided at the distal end of the connecting protrusion 162 and the elastic member 162a provided on the supporting flange 163a So that the external force applied to the support portion 130 can be relaxed. Since the elastic member 162a can provide an elastic force at the end of the coupling protrusion 162, the elastic member 162a can be compressed in the process of being inserted into the coupling groove 132, 162 can be more firmly fixed by the connecting rod 160a.

For example, the support flange 163a and the elastic member 162a provided at the distal end of the connection protrusion 162 may be made of the same material and made of elastic urethane resin.

The connecting rod 160a may have a predetermined strength to support the vertically stacked body 110. For example, the connecting rod 160a may be made of one or more of stainless steel, PP, PC, and ABS. On the other hand, while these materials have strength and moldability, they are problematic because of their hard, smooth appearance and poor grip feeling during the work of the operator.

The connecting rod 160a according to the present embodiment may further include a handle portion 165. [ The handle portion 165 may be formed of thermoplastic polyurethane (TPU), and may be integrally formed with the connecting rod 160a. The thermoplastic polyurethane is lightweight and hard and does not deform well, has flexibility and transparency, and has strong durability. By providing the handle 165 on the connecting rod 160a using the thermoplastic polyurethane material, it is possible to prevent slippage during operation and increase the grip feeling, so that it can be efficiently used with less force.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 12 to 28. FIG. Except for the contents to be described later, the contents are similar to those described in the embodiments described with reference to Figs. 1 to 11D, so that detailed description thereof will be omitted.

12 is a perspective view of a precast concrete panel for a retaining wall according to another embodiment of the present invention. Fig. 13 is a front view of Fig. 12, Fig. 14 is a side view of Fig. 12, and Fig. 15 is a top view of Fig. FIG. 16 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 12 connected and fixed.

12 to 16, the pre-cast concrete panel 200 according to the present embodiment includes a body portion 210, a reinforcing portion 220 provided on the first surface 210a of the body portion 210, And a supporting portion 230 and a fastening protrusion 213 may be provided on the second surface 210b of the body portion 210. [ The body 210 has a pair of upper and lower parts 210 and 220 which are located on the upper side of the reinforcing part 220 and the supporting part 230 and below the center of the body part 210, A drain hole 212 may be provided. In addition, the fastening protrusion 213 can fasten the body 210, which is horizontally arranged by the connecting bracket 250.

The reinforcing part 220 according to the present embodiment is inclined at a first angle? 1 with respect to the first surface 210a of the body part 210. The upper surface of the support part 230 is inclined with respect to the body part 2 by a second surface 210b of the second surface 210. [ The first angle? 1 may be larger than the second angle? 2.

In the precasting concrete panel 200 according to the present embodiment, the support portion 230 has a cross-section in a first direction from the first surface 210a to the second surface 210b of the body portion 210 in parallel trapezoidal shape And a cross section of the support portion 230 in the longitudinal direction may be provided in a trapezoidal shape such that only the upper side is inclined. The upper surface of the support portion 230 may be inclined at an inclined angle with respect to the reinforcement portion 230, the body portion 210, and the support portion 230, As shown in FIG. The thickness of the support part 230 may be the same as the thickness of the body part 210.

The precasting concrete panel 200 according to the present embodiment has the upper part of the support part 230 equal to the inclination of the path through which the permanent anchor fixing the precasting concrete panel 200 is passed, The fixing force can be further improved. Accordingly, since the thickness of the support portion 230 supporting the body 210 can be reduced, the pre-cast concrete panel 200 can be made lighter.

FIG. 17 is an exploded perspective view of a precast concrete panel for a retaining wall having a front cover according to another embodiment of the present invention, FIG. 18 is a perspective view showing an assembled state of FIG. 17, and FIG. 19 is a front view of FIG. 18 . FIG. 20 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 17 installed using a permanent anchor.

17 to 20, the precast concrete panel 300 according to the present embodiment is provided on the first surface of the body part 310 at a lower side of the first surface to cover the reinforcement part 320 And a front cover part 370 provided on the front cover part. The front cover part 370 is provided on the first surface of the body part 310 to cover the reinforcing part 320 which is fixed by the permanent anchor or the like and is fastened to the body part 310, May be provided at the exposed position. The front cover part 370 has a width corresponding to the first surface of the body part 310 and is separated from the body part 310 and protruded through the reinforcing part 320 and the reinforcing part 320. [ It is possible to provide a space to be provided with a permanent anchor or the like. The front cover part 370 covers the lower side of the body part 310 to improve the beauty of the appearance and protects the part to be fastened with the permanent anchor.

The front cover part 370 includes a plurality of plate-shaped blocking members 372 spaced apart from each other and arranged in parallel to each other, at least one frame 371 and 373 connecting and fixing the blocking member 372, A leg member 374 protruding toward the body portion 310 so as to be perpendicular to the body member 310 and separating the blocking member 372 from the body portion 310; And a cover fastening part 375 which is in contact with and fastened to the fastening part 310.

The blocking member 372 includes a front blocking member 372 disposed to correspond to the width of the first surface of the body 310 and spaced from and aligned with the first surface, Has a pair of end frames 371 (371) connecting the ends of a plurality of aligned blocking members 372, each having a cross section in a first direction from the first surface to the second surface of the body portion, And a pair of fastening frames 372 connected to the inner surface of the blocking member 372 and spaced inward from the end frame 371.

The leg member 373 may separate the blocking member 372 from the body 310. The leg members 373 may be provided in one or more of the fastening frames 372. Preferably, the leg members 373 are provided at four positions on the upper and lower sides of the fastening frame 372, respectively, and the cover fastening portions 375 are fastened to the first face of the body portion 310 And may be provided at the distal end of the leg member 373, respectively.

The front blocking part 370 has a blocking member 372 facing the first face of the body part 310. The front blocking part 370 includes a front blocking part 370, A side surface, and a side surface.

FIG. 21 is an exploded perspective view of a precast concrete panel for a retaining wall having a front cover according to another embodiment of the present invention, FIG. 22 is a perspective view showing the assembly of FIG. 21, and FIG. 23 is a front view of FIG. . 24 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 21 installed using a permanent anchor.

The precast concrete panel 400 according to the present embodiment includes a front cover part 470 provided to cover the reinforcing part 420 while exposing the drain hole at the lower side of the first surface of the body part 410 .

The front cover part 470 includes a plurality of plate-shaped blocking members 472 spaced apart from each other, a frame 471 for fixing the blocking member, a plurality of blocking members 472 and 476, A cover fastening part 475 provided at a distal end of the leg member 474 to fix the front cover part 470 to the body part 410 and a cover fastening part 475 fastened to the body part 410, 472) of the frame (474).

The blocking members 472 and 476 are disposed on the first surface so as to correspond to the width of the first surface of the body 410 and are disposed on the front surface of the body 410 And a front side blocking member 472 covering the spaced side surface between the first side of the body portion 410 and the first side of the body portion 410, And may include a side blocking member 476 having a smaller size than the front blocking member 472.

The frame 473 may include four end faces of the plurality of aligned front block members 472 and four fastening frames 473 spaced apart from each other and connecting the inner face of the front block member 472 to each other. The leg members 474 may be provided on the upper and lower sides of the fastening frame 473 in total.

The leg members 474 connected to the fastening frame 473 may be integrally formed, and may have a U-shaped cross section perpendicular to the first direction.

The cover fastening part 475 is connected to the first surface of the body part 410 and extends perpendicularly to the leg member 474 at the ends of the respective leg members 474, And may extend in a side-by-side direction. The cover fastening portions 475 provided at both ends of the front blocking member 472 are directed toward the inside so as to face each other and the cover fastening portions 475 provided inside the front blocking member 472 are respectively disposed As shown in Fig.

In the precast concrete panel 400 according to the present embodiment, the front cover part 470 may be provided to cover the front surface facing the body part 410, the upper surface, the lower surface and the side surface.

FIG. 25 is an exploded perspective view of a precast concrete panel for a retaining wall having a front cover according to another embodiment of the present invention, FIG. 26 is a perspective view showing an assembled state of FIG. 25, and FIG. 27 is a front view of FIG. 25 . 28 is a view schematically showing a precast concrete panel for a retaining wall of FIG. 25 installed using a permanent anchor.

In this embodiment, the precast concrete panel 500 may have a front cover part 570 provided on the lower side of the body part 510 and covering the reinforcing part 520.

The front cover part 570 includes a plurality of plate-shaped blocking members 572 and 576 arranged in parallel and spaced apart from each other, at least one frame 571 connecting and fixing the blocking members 572 and 576, And a cover coupling part 575 connected to the body part 510 to be engaged with the body part 510.

The blocking member 572 and 576 may include a front blocking member 572 arranged to be vertically disposed on the first face of the body portion and an upper face and a lower face between the front blocking member and the first face of the body portion, And a top and bottom blocking member 576 that covers the upper and lower cover members 571 and 552 and has a size corresponding to the width of the body portion.

The frame 571 includes two fastening frames 571 provided at upper and lower ends of a plurality of aligned blocking members 572 and 576 having a U-shaped cross section in the first direction, The cover fastening part 575 is coupled to the first surface of the body part 510 and is vertically connected at both ends of the fastening frame 571, but may extend to face each other.

The front cover part 570 according to the present embodiment can fix the plurality of blocking members 572 and 576 by a pair of fastening frames 571 provided to correspond to the upper and lower ends, And 576 and the front cover 570 formed by the fastening frame 571 may be provided in a box shape having only a surface facing the first surface of the body 510 opened.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

100, 200, 300, 400, 500: precast concrete panel
110, 210, 310, 410, 510:
120, 220, 320, 420, 520:
130, 230, 330, 430, 530:

Claims (9)

A plate-like body portion having a first surface and a second surface facing the first surface;
A reinforcing portion having a smaller size than the body portion on a first surface of the body portion and having an outer surface inclined at a first angle with respect to a first surface of the body portion;
At least a portion of the second surface of the body portion facing the reinforcing portion and extending to correspond to a lower surface of the body portion; And
And at least one lamination hole provided at an upper surface and a lower surface of the body and corresponding to each other to connect the vertically stacked bodies by the connection pins,
The reinforcing portion may include a first fixing hole passing through the reinforcing portion, and the body portion may include a second fixing hole penetrating the body portion to correspond to the first fixing hole, And the first to third fixing holes communicate with each other to form a path,
Wherein the reinforcing portion has a rectangular cross section in the longitudinal direction and the support portion has a trapezoidal cross section in a first direction from the first surface to the second surface of the body portion,
And a plurality of fastening protrusions protruding outwardly from the second surface are formed on the second surface of the body portion, the fastening protrusions are provided on both sides of the support portion, corresponding to each other with the support portion interposed therebetween,
The body portion is vertically stacked so that the upper surface and the lower surface of the body portion face each other, and is fixed by a connection pin inserted into the lamination hole,
The supporting portions are provided at their upper and lower surfaces with coupling grooves recessed inwardly from the upper and lower surfaces of the supporting portion at positions corresponding to each other,
And a connecting rod which is fastened to the connecting groove of each of the upper and lower stacked body parts to fix the upper and lower stacked body parts,
Wherein the connecting rod has a cylindrical rod member, a supporting flange provided at an end face of one end and the other end of the rod member in a larger area than the end face of the rod member and contacting the upper surface and the lower surface of the supporting member, And a connection protrusion inserted into the connection groove,
Wherein the support flange has a circular cross section and the outer periphery of the support flange corresponds to the edge of the support portion, the support flange extends from the rod member to gradually increase in area,
Wherein the connection protrusions are provided at a smaller height than the connection grooves. The method according to claim 1,
The body portion may further include a pair of drain holes provided to pass through the body portion at positions corresponding to each other with the support portion interposed therebetween,
A path extending from the first fixing hole to the third fixing hole is inclined with respect to the body portion so as to be downward from the first fixing hole,
Wherein the pair of drain holes are spaced at equal intervals with the passage therebetween, wherein the diameter of the drain hole is smaller than the diameter of the pass. delete The method according to claim 1,
Wherein the connecting rod further comprises a handle portion provided at the center of the outer surface and made of a material different from the connecting rod,
Wherein the rod member includes a stepped portion provided so as to be recessed inwardly from a central portion thereof and the handle portion is provided on the same outer surface as the outer surface of the rod member so as to cover the stepped portion,
Wherein the rod member comprises at least one of stainless steel, polypropylene (PP), polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS), and the handle is made of thermoplastic polyurethane (TPU) And the handle portion are integrally formed by injection of a rubber insert,
Wherein the support flange is made of a rubber material and the end of the connection protrusion is provided with an elastic member made of the same rubber material as the support flange. The method according to claim 1,
A plurality of fastening protrusions provided on the body portion are fastened to the connecting bracket to connect the neighboring body portions to each other,
The connecting bracket includes a main member having a plurality of coupling grooves corresponding to the coupling protrusions so as to contact the second surface of the main body and to be coupled to the coupling protrusions, And a pair of side members that are bent in a direction perpendicular to the longitudinal direction,
Wherein the connecting bracket has a U-shaped section in the first direction,
And the extended length of the side member is longer than the fastening protrusion protruded through the fastening groove. 3. The method of claim 2,
And a front cover part provided on a first surface of the body part to cover a reinforcing part provided on a lower side of the first surface,
The front cover part includes a plurality of plate-shaped blocking members spaced apart from each other and arranged in parallel to each other, at least one frame for connecting and fixing the blocking member, a protrusion protruding toward the body to be perpendicular to the blocking member, And a cover fastening part connected to the leg member to be in contact with and fastened to the body part. The method according to claim 6,
Wherein the shielding member comprises a front shielding member provided to correspond to a width of the first surface of the body and spaced from and aligned with the first surface,
The frame includes a pair of end frames each having a cross section along the first direction and connecting both end portions of the plurality of aligned block members and an inner surface of the block member, A pair of fastening frames,
Wherein the leg members are provided in at least one of the fastening frames,
Wherein the cover fastening portion is provided at an end of the leg member to be fastened to the first surface of the body portion, respectively. The method according to claim 6,
The shielding member may include a front surface that is provided to correspond to the width of the first surface of the body portion and is parallel to the first surface and faces the body portion and a front surface that is spaced apart from the first surface of the body portion, And a side blocking member which covers the front side blocking member and is spaced apart from the first side face of the body portion and is smaller in size than the front blocking member,
Wherein the frame includes both ends of a plurality of aligned front shielding members and four fastening frames spaced apart from each other to connect the inner surface of the front shielding member,
The leg members are provided in total eight in the upper and lower portions of the fastening frame,
Wherein the leg members connected to the fastening frame are integrally formed to have a U-shaped cross section perpendicular to the first direction,
Wherein the cover fastening portion is formed to extend in a direction perpendicular to the leg member at the end of each of the leg members coupled to the first surface of the body portion and extending in a direction parallel to the front blocking member, Wherein the fastening portions are provided inward to face each other and the cover fastening portions provided in the front blocking members are provided outward so as to face the ends of the ends. 3. The method of claim 2,
And a front cover part provided on a first surface of the body part to cover a reinforcing part provided on a lower side of the first surface,
Wherein the front cover part includes a plurality of plate-shaped blocking members arranged in parallel to each other and spaced apart from each other, at least one frame for connecting and fixing the blocking member, and a cover coupling part connected to the blocking member to be engaged with the body part,
Wherein the shielding member comprises a front shielding member spaced apart from and aligned with the first surface of the body portion and a top surface and a bottom surface spaced apart from each other between the front shielding member and the first surface of the body portion, And an upper and lower shielding member having a size corresponding to the width of the body portion,
Wherein the frame includes two fastening frames each having a U-shaped cross section along the first direction and provided at each of an upper end portion and a lower end portion of the plurality of aligned blocking members,
Wherein the cover fastening part is coupled to the first surface of the body part and is vertically connected at both ends of the fastening frame, and extends to face each other.

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