KR20030025370A - Gravity retaining wall construction method with steel frame - Google Patents

Abstract

PURPOSE: A process for forming a gravity type retaining wall is provided to directly arrange steel frames on actual sites without concrete thereby to allow a rapid construction and a efficient delivery of constructional materials. CONSTITUTION: The process comprises several steps of hardening a base for constructing the retaining wall(10) above; mounting at least two steel frames(20) along a line for the retaining wall(10); and filling a filler into a space between frames and into the frames; laminating additional steel frames(20) onto the filled frames. The lamination step includes forming hexahedral outline of the frames made of section steel(22) by bolt; mounting a screen blocking passage of the filler on at least one of sides defining outer surface of the retaining wall; and jointing outer frames of the adjacent steel frames. The lamination step further includes arranging a central line of the upper steel frame on an outline between bottom steel frames.

Description

Gravity retaining wall construction method with steel frame

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall, and more particularly, to a method for constructing a retaining wall by laminating a prefabricated steel frame filled with a filling material, and relates to an environmentally friendly retaining wall construction method.

Retaining wall refers to a wall that is built so that soil does not collapse in response to earth pressure. Generally, it is used to prevent ground collapse that occurs when the soil is piled up on a steeper slope or the mountain is cut. It is a structure made.

The conventional retaining wall types include a block retaining wall, a gravity concrete retaining wall, and a special reinforced concrete retaining wall. The first retaining wall includes a shaft wall, which is widely used since ancient times. Construct using concrete blocks.

Secondly, the gravity concrete retaining wall is a structure that prevents the collapse of the ground by the weight of the concrete itself, and is adopted when the height is relatively low. Third, the special reinforced concrete retaining wall is economical for the gravity concrete retaining wall because the retaining wall becomes larger. Or it is used when it is necessary to favor the use of paper with the wall vertically, and there are various forms such as an inverted T type and an auxiliary wall type. In addition, there is a simple retaining wall using a steel plate or a fence.

This conventional concrete retaining wall is collapsed by the feng shui damage, which is because the rainwater penetrates the ground behind the retaining wall and weakens the ground, and the earth pressure applied to the retaining wall is increased, causing the retaining wall to collapse. To prevent the formation of drains in the retaining wall.

On the other hand, the retaining wall constructed of concrete is more durable than the retaining wall constructed by laminating stones and rocks, but in order to construct the concrete retaining wall, concrete must be poured using a truck mixer.

However, when constructing the concrete retaining wall is a lot of field work is subject to many restrictions depending on the site conditions. Among the limitations, the biggest limitation is that it is difficult to enter the truck mixer to the construction site of the retaining wall. Especially, in order to install the retaining wall at the foot of the mountain, the truck mixer cannot enter the truck mixer. There is a disadvantage that it is not dense causing quality deterioration.

Even if the diarrhea and the truck mixer are easy to enter and exit, the construction site requires additional equipment such as formwork for concrete placement, and there is a disadvantage in that the overall construction period becomes longer due to the increased number of field works.

In addition, when the concrete retaining wall is installed in a mountain or valley, there is a disadvantage in that animals and plants cannot inhabit concrete and are not friendly to nature.

The present invention has been proposed in order to solve the problems of the prior art as described above, the construction is easy and can be quickly installed, because the use of steel ductility superior to concrete, excellent seismic resistance, environmentally friendly prefabricated The purpose is to provide a gravity retaining wall construction method using steel frame.

1 is a cross-sectional perspective view showing a retaining wall using a steel frame according to an embodiment of the present invention,

Figure 2 is a side view of the retaining wall shown in Figure 1,

3 is an exploded perspective view of the steel frame shown in Figure 1,

4 is a perspective view showing a relationship in which the steel frame shown in Figure 1 is connected to the side,

Figure 5 is a schematic diagram showing the connection of the connecting pieces fastened to the steel frame shown in Figure 4,

6 is a front view showing the shape of the screen of the steel frame shown in FIG.

♠ Explanation of symbols on the main parts of the drawings.

1: land 10: retaining wall

20: steel frame 21: the first L-shaped steel

22: second L-shaped steel 23: strip steel sheet

25: section steel 31: side screen

32: bottom screen 33: bracing

70: connecting piece

According to the present invention for achieving the object as described above, in the method of constructing the retaining wall is installed in order to preserve the earth and sand on the slope having a slope of more than the stable slope of the earth and sand, the step of forming a flat base surface to install the retaining wall and Installing two or more rows of steel frames along the retaining wall mounting line on the base surface, filling the filling material in the space between the interior of the steel frame and the adjacent steel frame, and laminating additional steel frames on the filled steel frame. And filling the space between the inside of the laminated steel frame and the space between adjacent steel frames, wherein the steel frame installation step and the steel frame lamination step include bolting frames made of section steel to each other in cross section. Forming an outline of a trapezoidal hexahedron, and excluding an upper surface of the hexahedron Routing includes installing a screen for preventing passage of the filling material on at least one surface including the surface, and connecting the outer frame of the adjacent steel frame to each other, the steel frame lamination step of the lower layer A retaining wall construction method is provided in which a center line of an upper steel frame is positioned at a boundary between adjacent steel frames.

Preferably, the steel lamination step and the filling of the laminated steel frame are repeated at least one or more times.

In addition, the steel frame installation step and the steel frame stacking step of the present invention, it is preferable to additionally include the step of connecting two corners of the diagonal direction in the shape steel at least one side of the steel frame.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the gravity retaining wall construction method using a prefabricated steel frame according to the present invention will be described in detail.

1 is a cross-sectional perspective view showing a retaining wall using a steel frame according to an embodiment of the present invention, Figure 2 is a side view of the retaining wall shown in Figure 1, Figure 3 is an exploded view of the steel frame shown in Figure 1 4 is a perspective view illustrating a relationship in which the steel frames illustrated in FIG. 1 are connected laterally, and FIG. 5 is a schematic view illustrating a connection relationship of the connection pieces fastened to the steel frames illustrated in FIG. 4, and FIG. 4 is a front view showing the shape of the screen of the steel frame shown in FIG.

As shown in Figure 1 and 2, the steel frame 20 of the hexahedron cross-section is trapezoidal, the screens 31, 32 are installed on the four sides and the upper and lower surfaces of the cube, and the interior of the steel frame 20 And a filling material 80 that is filled between the plies of the steel frame 20 positioned in parallel with each other.

As shown in FIG. 3, the steel frame 20 has end portions of twelve first L-shaped steels 21 (21H, 21M, and 21L) connected to form a cube, wherein the inside of the first L-shaped steel 21 is formed. The surface is connected to face the interior of the steel frame 20 of the cube. The cover portion 29 is fastened to the first L-shaped steel 21 while the first L-shaped steel 21 is connected to each other while the cover portion 29 covers the connecting portion of the first L-shaped steel 21.

A plurality of second L-shaped steel 22 is bolted to the first and second L-shaped steel (21H, 21L) of the upper and lower portions of the four sides of the steel frame 20 on the four sides of the steel frame 20 along the four sides Fixed in parallel. Here, the second L-shaped steels 22 become members of the side screen 31.

In addition, the strip steel plates 23 are positioned on the upper and lower surfaces of the steel frame 20, and the steel frames are formed in four first L-shaped steels 21H and 21L located on the upper and lower surfaces of the steel frame 20 in the width direction of the steel frame 20. It is disposed along the length of 20, the first L-shaped steel (21H, 21L) and the strip steel plate 23 is fixed by bolting. Here, the strip steel plates 23 become members of the upper screen and the lower screen 32.

Meanwhile, the second L-shaped steel 22 is used as the side screen 31, but any one or both side cross-sections of both side cross-sections of the length of the steel frame 20 depend on the position where the steel frame 20 is disposed. The bracing part 33 is replaced in place of the screen 31. The bracing part 33 is a member 25 connected diagonally to the inside of the steel frame 20 and is a member used to improve durability of the steel frame 20.

Here, the arrangement relationship of the steel frame 20 is to place the steel frame 20 on the ground on which the ground foundation work is completed to install the retaining wall (10). At this time, the steel frame 20 located on the ground is disposed on the ground along the retaining wall installation line in multiple layers. The steel frame 20 seated on the ground in multiple layers becomes the first stage retaining wall 10a, which is the bottom of the retaining wall 10 to be constructed, and the width of the first stage retaining wall 10a is the earth pressure according to the retaining wall construction calculation formula. It is set in consideration of. On the other hand, the steel frame 20 is seated on the upper surface of the steel frame 20 seated on the ground with a smaller number of layers than one of the number of layers of the lower steel frame 20 seated on the ground, the top of the lower steel frame 20 The seated steel frame 20 is positioned between the plies of the lower steel frame 20 and is positioned over the upper surface of the lower steel frame 20 positioned on the left and right sides.

Therefore, considering the height of the retaining wall 10 to be installed and the area of the lower portion of the retaining wall 10, the number of hot water of the steel frame 20 seated on the ground is set.

On the other hand, as shown in Figure 4, both side cross-sections of the steel frame 20 is fixed to form a one-stage retaining wall (10a) as long as the length of the retaining wall 10, in one embodiment of the present invention, one-stage retaining wall A state where the steel frame 20 constituting (10a) is arranged in parallel in three rows will be described as an example. The two-stage retaining wall 10b is formed by stacking the steel frame 20 of another layer on the upper surface of this one-stage retaining wall 10a. The steel frame 20 of the two-stage retaining wall 10b is arranged in two rows along the length of the retaining wall 10.

In addition, a three-stage retaining wall 10c is positioned on an upper surface of the two-stage retaining wall 10b, and the steel frame 20 of the three-stage retaining wall 10c is a row of two rows of steel frames 20 of the two-stage retaining wall 10b. It is disposed along the length of the retaining wall 10 in a state seated between the two rows of steel frame 20 to be caught.

Between the steel frame 20 and the steel frame 20, the filling material 80, such as stone and rock is filled, the filling relationship of the filling material 80 will be described in detail below. The steel frame 20 filled with the filling material 80 serves as a gravity retaining wall 10 by its weight.

In this way, the height of the final retaining wall 10 is formed by stacking the various retaining walls 10a, 10b, and 10c. In the arrangement relationship of the steel frame 20, the bracing part 33 is installed at the portions where both side cross-sections of the steel frame 20 meet, that is, corresponding to the side surface of the retaining wall 10, that is, the steel frame 20 The side screen 31a is formed by the second L-shaped steel 22 at a portion where side contact between the two is not made. This is to ensure that the filling material 80 such as stones and rocks filled in the steel frame 20 does not escape to the outside of the steel frame 20.

On the other hand, as shown in Figure 5, by using the connecting piece 70 to fix the steel frame 20 located in the fold to connect the first L-shaped steel (21H) of the upper surface of the steel frame 20 located in the fold. . The connecting piece 70 interconnects the upper first L-shaped steel 21H of the steel frame 20 which is laid in a stack before the upper steel frame 20 is seated on the steel frame 20, and thereafter. The upper steel frame 20 is seated.

On the other hand, while filling the filling material 80, such as stones and rocks even between the steel frame 20 is placed in the layer, retaining wall (10) to support the filling material 80 filled between the steel frame 20 is placed in the layer An additional screen 31b is installed in an inverted triangular space formed between the lower two steel frames 20 and the upper steel frames 20 positioned at both ends of the upper and lower ends. The additional screen 31b is made of band steel plates, and both ends of the band steel sheet are inclined first L-shaped steel 21L of the upper steel frame 20 and inclined first L-shaped steel 21M of the lower steel frame 20. Connect

The construction method of gravity retaining wall using the prefabricated steel frame configured as described above will be described in detail.

First, in order to fill the ground, the ground on which the retaining wall 10 will be located is laid out. Thereafter, the first L-shaped steel 21, the second L-shaped steel 22, the band steel plate 23, and the bracing portion 33 are assembled as described above to form the steel frame 20 on the ground. After that, the first retaining wall 10a is formed of a plurality of rows.

Then, the additional screen 31b is fixedly installed between the steel frames 20 on both side surfaces of the one-stage retaining wall 10a. At this time, the additional screen 31b is fixed to the inclined first L-shaped steel 21M of the steel frame 20 of the one-stage retaining wall 10a and extends upward. In this way, when the additional screen 31b is installed, the filling material 80 such as stones and rocks is filled between the layers of the steel frame 20 of the first stage retaining wall 10a and the inside of the steel frame 20. Then, the band steel plate 23 is fastened to the first L-shaped steel 21H on the upper surface of the steel frame 20 to form an upper screen, and the connecting piece 70 is arranged on the upper surface of the first steel sheet 20 in the first L shape. Interconnect and fix to the section steel (21H).

Next, the assembled steel frame 20 is seated on the upper surface of the one-stage retaining wall 10a to form a two-stage retaining wall 10b. At this time, the steel frame 20 of the two-stage retaining wall 10b is seated on the upper surface between the steel frames 20 of the one-stage retaining wall 10a. Therefore, the number of layers of the two-stage retaining wall 10b is arranged in a number smaller than the number of layers of the steel frame 20 of the one-stage retaining wall 10a.

After seating the steel frame 20 of the two-stage retaining wall 10b, the filling material 80 is filled, as in the first-stage retaining wall 10a, and the bottom of the additional screen 31b of the steel frame 20 is first The steel frame of the two-stage retaining wall (10b) is fastened to the L-shaped steel (21L), an additional screen 31b is installed between the steel frame (20) of the two-stage retaining wall (10b), and the connecting piece (70) is stacked. Connect the upper surface of 20) and fix it with bolts and nuts. Then, the upper screen and the connecting piece 70 are installed in the steel frame 20 of the two-stage retaining wall 10b.

A plurality of stage retaining walls 10 are installed in the manner described above, and the steel frame 20 of the three-stage retaining wall 10c, which is the top, is arranged in a line, and the filling material 80 is filled in the steel frame 20. .

As such, when the retaining wall 10 having the calculated height is completed, the back surface of the retaining wall 10 is filled.

On the other hand, the outer surface of the completed retaining wall 10, that is, the opposite surface of the land (1) is exposed to a part of the upper surface of each steel frame 20 in the form of a staircase.

Since the filling material 80 is filled in the steel frame 20, vegetation is possible at a portion where the upper surface of the lower steel frame 20 is exposed in a stepwise manner, and the vertically stacked steel frame 20 of the steel frame 20 is filled. You can also plant vines on the side.

On the other hand, as shown in Figure 6 (a) and (b) and (c), the side screen 31 of the steel frame 20 may be configured in various forms. FIG. 6A is a front view of the side screen 31 of the steel frame 20 shown in FIG. 1, and FIG. 6B is a side screen 31 of the steel frame 20 having a honeycomb structure. ) Is a front view. 6C is a front view illustrating the side screen 31 of the steel frame 20 having a lattice structure.

On the other hand, in the gravity retaining wall construction method according to an embodiment of the present invention described above was described that the section steel constituting the side screen 31 and the additional screen 31b is arranged vertically, but the present invention is not limited to this, the side screen Both ends of the section steel constituting the 31 and the additional screen 31b are fixed to the first L-shaped steel 21M of the steel frame 20 so that both ends are fixed horizontally.

In addition, in the gravity retaining wall construction method described above, the steel frame 20 is arranged in a plurality of rows to form a single-stage retaining wall 10a, and the steel frame 20 of the two-stage retaining wall 10b is formed of a single-stage retaining wall 10a. Stacked so as to span between the steel frame 20 arranged in a row, but not limited to this, the front of the first stage retaining wall (10a) and the front of the second stage retaining wall (10b) forming the front of the retaining wall (10) is the same. The front surface of the retaining wall 10 may be stacked to form a plane inclined with respect to the ground.

As described in detail above, the gravity retaining wall construction method using the prefabricated steel frame of the present invention can be assembled and constructed at the construction site without using concrete, and thus has an advantage in that construction is fast and efficient in material transportation.

In addition, in the gravity retaining wall construction method using the prefabricated steel frame of the present invention, the stones and rocks are filled in the steel frame, and the water submerged in the fill land is easily discharged through the steel frame, thereby reducing the earth pressure on the back wall of the retaining wall. It is possible to improve the durability of the retaining wall.

In addition, in the gravity retaining wall construction method using the prefabricated steel frame of the present invention, the interior of the steel frame is filled with stones and rocks, so that plants can be vegetated in the steel frame, thereby being environmentally friendly.

The technical idea of the gravity retaining wall construction method using the prefabricated steel frame of the present invention has been described above with the accompanying drawings, but this is by way of example and not by way of limitation. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (3)

In the method of constructing a retaining wall provided for preservation of the earth and sand on a slope having a slope of more than the stable gradient of earth and sand, Flattening the base surface on which the retaining wall is to be installed; Installing two or more layers of steel frame along the retaining wall installation line on the base surface; Filling the filling material in the space between the inside of the steel frame and the adjacent steel frame, Stacking additional steel frames on the filled steel frame; Filling a filler in the space between the laminated steel frame and the adjacent steel frame, The steel frame installation step and the steel frame lamination step, Bolting the frames made of the section steel to each other to form an outline of a hexahedron having a trapezoidal cross section; Installing a screen capable of preventing passage of the filling material on at least one surface including a surface forming an outer surface of the retaining wall except for the upper surface of the cube; Connecting the outer frames of adjacent steel frames to each other, Retaining wall construction method in the steel frame stacking step is arranged so that the center line of the steel frame of the upper layer is located on the boundary line between the adjacent steel frame of the lower layer. The method according to claim 1, Retaining wall construction method characterized in that for repeating the steel frame laminating step and filling the inside of the laminated steel frame at least one or more times. The method according to claim 1 or 2, The steel frame installation step and the steel frame lamination step, Retaining wall construction method further comprises the step of connecting two corners of the diagonal direction in the shape steel at least one side of the steel frame.