KR20130073030A - Soil retaining structure of two rows pile and construction method for soil retaining structure - Google Patents

Abstract

PURPOSE: A two-row retaining wall structure and soil retaining method is provided to stably support soil in the outer side of an excavation area by dispersing soil pressure applied to a first row retaining wall body to the top and bottom ends of a second row retaining wall body. CONSTITUTION: A two-row retaining wall structure and soil retaining method comprises a first row retaining wall body (100), a second row retaining wall body (200), a connection reinforcement member (300), and an inclination reinforcement member (400). The first row retaining wall body comprises a water barrier wall (110) installed along the boundary line of an excavation area and a first row pile (120) spaced apart from the water barrier wall. The second row retaining wall body comprises a second row pile (210) spaced apart from the first row pile and an earth-flow plate (220) installed in between the second row pile and the second row retaining wall body. The connection and inclination reinforcement members connect the first and second row piles.

Description

Soil retaining structure of two rows pile and construction method for soil retaining structure}

The present invention relates to a two-row earthquake structure and earthquake construction method to stably support the rearing soil to stably carry out the trench.

In general, the thumb pile earthquake method is a kind of a detachable earthquake method, which is entered by a method of driving a thumb pile (H-pile) at a predetermined interval or inserting it after drilling, and performing a trench to thumb the earth block member such as an earth plate. It refers to a method of forming a wall between the piles, the thumb pile earth plate method, sheet pile method, SCW, CIP and the like.

Figure 1 is a schematic diagram showing the configuration of the structure of the earth block by the thumb pile earth plate method of the conventional earth block method. It is constituted by a plurality of thumb piles (H beams) 1 installed vertically so that the mutual groove portions face each other, and an earth plate 2 inserted into the groove portion to prevent the pile of dirt from behind and falling forward. . At this time, the earth plate 10 is used as a wooden board or steel plate of a predetermined standard, to form a wall by laminating it, and adopts a structure in which a fitting (wedge) is installed to fix the laminated earth plate. .

However, in the case of performing a high-depth digging work, the conventional earthen block method cannot resist the earth pressure of the rear soil by the H beam alone, so a large number of support materials (Strut, Earth Anchor, Raker, etc.) must be used to reinforce it. However, this method is not only economical, but also makes it difficult to secure a working space and is structurally inefficient, which may cause settlement of surrounding ground.

Such a clogging method is disclosed in Republic of Korea Patent Publication No. 10-1262357 (2013.05.02).

It is an object of the present invention to provide a two-row mud structure and mud barrier method for stably supporting the rearing soil to enable high-depth ground excavation.

The present invention provides a first heat mud wall and a first heat mud wall having a first order pile installed vertically in the ground in a state spaced apart from each other along the order wall and installed along the boundary line of the excavation area. A second row piling wall having a second row pile vertically placed in the ground so as to be disposed side by side in a spaced apart state, and a earth plate installed between the second row piles, the first row pile and the second row A connecting reinforcing member connecting the first row pile and the second row pile in a horizontally disposed state between the piles, and the first row pile and the first row pile inclined between the first row pile and the second row pile. It provides a two-row mud structure including a slope reinforcing material for connecting the second row pile.

Further, according to another aspect of the invention, the step of forming the order wall along the boundary line of the excavation area, the step of installing a first row pile perpendicular to the inside of the excavation area in a state spaced apart from each other along the order wall, the first Installing a second row pile vertically inside the excavation area in a state parallel to the row pile, and installing a temporary support member to support the second row pile disposed to face each other on the boundary lines facing each other; Installing a connecting reinforcing material and an inclined reinforcing material to connect and support the first row pile and the second row pile, and installing a earth plate between the second row piles; Embedding the buried reinforcement material in the excavation area to support the lower ends of the second row piles, and to the front of the second row piles and the earth plate 2 provides a heat retaining process comprises a step of forming concrete wall parts.

In the two-row earthenware structure and the two-row earthenware method according to the present invention, the first and second heat retaining walls are installed side by side in a state spaced apart from each other on the boundary line of the excavation area, and the first heat retaining wall and the first heat retaining wall The second row mud wall is connected to the upper and lower ends by connecting reinforcing materials and inclined reinforcing materials, while the earth pressure applied to the first row mud wall is distributed and transmitted to the upper and lower ends of the second thermal mud wall, and the earth and sand outside the excavation area Make it possible to stably support

1 is a schematic configuration diagram showing a conventional earth block structure.
2 is a cross-sectional view of the installation state of the two-row mudguard structure according to an embodiment of the present invention.
Figure 3 is a flow chart showing a two-row earthquake construction method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

Figure 2 is a cross-sectional view of the installation state of the two-row mudstone structure according to an embodiment of the present invention. Referring to FIG. 2, the two-row mud structure includes a first row mud wall 100, a second row mud wall 200, a connecting reinforcing material 300, and an inclined reinforcing material 400.

The first thermal mud wall 100 and the second thermal mud wall 200 are disposed side by side in a state spaced apart from each other, and are installed vertically in the ground in the excavation area (10). In this case, the first thermal mud wall 100 is installed along the boundary line of the excavation region 10 to primarily support the earth pressure outside the excavation region 10, and the second thermal mud wall 200. The structure is installed side by side in the excavation region 10 in a state spaced apart from the first thermal wall (100) to support the earth pressure of the excavation region 10 outside the secondary.

Here, the first thermal barrier wall 100 includes the order wall 110, the first column pile 120.

The order wall 110 is installed along a boundary line of the excavation region 10 to block the groundwater and earth and sand from outside the excavation region 10 to enter the excavation region 10. The lower end of the order wall 110 is installed to be fixedly coupled to the inner ground of the excavation region 10. Here, the order wall 110 may be formed through the LW method or the SCW method, but is not limited thereto.

The first column pile 120 is a member that stably supports the order wall 110. The first column pile 120 is provided in plural in a state spaced apart from each other along the longitudinal direction of the order wall 110. That is, the first column pile 120 is vertically placed in the ground inside the excavation region 10 in a state in which the first column pile 120 is spaced apart from each other along a boundary line of the excavation region 10. In this case, the first column pile 120 may be configured as a structure while being coupled with the order wall 110 when the order wall 110 is formed. Here, the first column pile 120 is preferably used to select the steel frame, such as H beam, steel rods, steel pipes, but is not limited thereto, the specification according to the construction site, such as the depth of excavation and earth pressure of the excavation ground You can select and use materials.

The second thermal mud wall 200 includes a second thermal pile 210 and an earth plate 220.

The second row pile 210 is a member disposed side by side in a state spaced apart from the second row mud wall 200 to the inside of the excavation region (10). That is, the second row piles 210 are disposed to face the first row piles 120 in a spaced apart state, and then the lower row piles are vertically placed in the ground inside the excavation region 10, respectively. Here, the second column pile 210 is preferably used to select a steel frame, such as H beam, steel rods, steel pipes, like the first column pile 120 described above, but is not limited thereto, and the excavation depth and excavation Depending on the construction site such as soil pressure, the standard and material can be selected and used.

The earth plate 220 is a wall member that blocks the exposed portion between the second row pile 210. This, the earth plate 220 is installed coupled between the second column pile (210). Here, the earth plate 220 includes a plate member 221, the reinforced concrete wall portion 222. The plate member 221 is inserted into a plurality between the second column pile 210, it is blocked between the second column pile (210). The reinforced concrete wall portion 222 is the plate member which is the front surface of the plate member 221 and the second row pile 210, that is, the opposite wall surface of the wall facing the first thermal barrier wall 200 ( 221 and is coupled to one side of the second column pile 210. The reinforced concrete wall portion 222 increases the strength of the plate member 221, so that the earth pressure can be stably supported.

In addition, the second thermal mud wall 200 may be connected to a connection member 230 such as an earth anchor or a nail. This, one end in the longitudinal direction of the connecting member 230 is coupled to the reinforced concrete wall portion 222, the other end in the longitudinal direction is installed to be embedded in the ground outside the excavation area 10, the reinforced concrete wall portion 222 ) Can be supported stably while being pressed against the boundary line direction of the excavation region 10, that is, the direction opposite to the direction in which the earth pressure is applied.

The first thermal mud wall 100 and the second thermal mud wall 200 are disposed side by side in a state spaced apart from each other, between the first thermal mud wall 100 and the second thermal mud wall 200. Of course, earth and sand can be buried in the space.

The connecting reinforcing material 300 and the inclined reinforcing material 400 is disposed between the first thermal mud wall 100 and the second thermal mud wall 200, the first thermal mud wall 100 and the It is a reinforcing member installed to connect the second heat barrier wall 200. Here, the connecting reinforcing material 300 is connected to the upper end of the first thermal barrier wall 100 and the upper end of the second thermal barrier wall 200, the first row along the boundary line of the excavation region (10) It is possible to stably support the earth pressure applied to the upper end of the earth retaining wall 100 and the second heat retaining wall 200.

This, the connecting reinforcing material 300 is horizontally disposed between the first thermal mud wall 100 and the second thermal mud wall 200, referring to Figure 3 of one embodiment, the first thermal mud wall Both ends of the longitudinal direction in the state perpendicular to the wall 100 and the second thermal mud wall 200, respectively, are connected to the first thermal mud wall 100 and the second thermal mud wall 200, respectively. Here, the both ends in the longitudinal direction of the connecting reinforcing material 300, respectively, the upper end of the first row pile 120 of the first thermal barrier wall 100 and the second column pile 210 of the second thermal barrier wall 200. The connection is coupled to the top. In this case, both ends of the connecting reinforcement member in the longitudinal direction are connected to the first row pile 120 and the second row pile 210 by welding, bolting, or screw jack, but are not limited thereto. Of course, it can be coupled to.

The inclined stiffener 400 connects an upper end of the first thermal barrier wall 100 and a lower end of the second thermal barrier wall 200 to form the first thermal barrier wall along the boundary line of the excavation region 10. The earth pressure applied to the upper end of the 100 is distributed to the lower end of the second thermal barrier wall 200 to be stably supported.

Such, the inclined reinforcing material 400 is disposed inclined between the first thermal mud wall 100 and the second thermal mud wall 200, referring to Figure 3 of an embodiment, the inclined reinforcement 400 The longitudinal end of the inclined stiffener 400 is coupled to the upper end of the first row pile 210 of the first thermal barrier wall 100, the other end in the longitudinal direction is coupled to the first column pile (210) It is coupled to the second row pile 210 of the second thermal mud wall 200 in an inclined state so as to be disposed below the one end in the longitudinal direction. At this time, both ends of the longitudinal reinforcement member 400 are connected to the first column pile 120 and the second column pile 210 by welding, bolting, or screw jack, but not limited thereto. Of course, it can be coupled to.

In addition, one end in the longitudinal direction of the inclined stiffener 400 is coupled adjacent to the first column pile 120, the one end in the longitudinal direction of the connecting stiffener 300 is coupled. Accordingly, the earth pressure on the upper end of the first row pile 120 coupled with the longitudinal end of the inclined stiffener 400 and the longitudinal end of the connecting reinforcement 300 is connected to the upper end of the second thermal mud wall 200. And distributed to the lower end to maintain a stable support state.

Here, one end in the longitudinal direction of the inclined stiffener 400 may be coupled in a state in which the inclined reinforcement member 400 is inclined downward 110 to 160 degrees on the basis of the axis line of the first row pile 120. In this case, when the inclined stiffener 400 is smaller than 110 degrees or larger than 160 degrees, the ratio of the earth pressure of the upper end of the first thermal barrier wall 100 to the lower portion of the second thermal barrier wall 200 becomes low. do.

In addition, an auxiliary slope reinforcing material 500 may be installed in the first thermal barrier wall 100. The longitudinal end of the auxiliary inclined stiffener 500 is the upper end of the first row pile 120 of the first thermal barrier wall 100, more preferably the one end in the longitudinal direction of the inclined stiffener 400 When coupled to be adjacent to the portion, the other end in the longitudinal direction is installed to be inclined to be embedded in the ground inside the excavation region (10). The auxiliary stiffener 500 disperses and delivers the earth pressure applied to the first row pile 120 to the ground in the excavation region 10 to maintain a stable support state. Here, the auxiliary inclination stiffener 500 is preferably used to select a steel frame such as H beam or micropile, but is not limited thereto, the specification or material according to the situation of the construction site, such as the depth of excavation and earth pressure of the excavation ground Etc. can be selected and used.

Here, one end in the longitudinal direction of the auxiliary slope reinforcing material 500 may be coupled in a state inclined 165 degrees to 175 degrees downward relative to the axis line of the first column pile 120. In this case, when the auxiliary inclined stiffener 500 is smaller than 165 degrees or larger than 175 degrees, the ratio of the earth pressure of the upper end of the first thermal barrier wall 100 to the ground in the excavation region 10 is lowered. do.

In addition, the other end in the longitudinal direction may be additionally inclined so as to be buried in the outer ground of the excavation region 10 in a state in which the one end in the longitudinal direction of the auxiliary inclined stiffener 500 is coupled to the upper end of the second row pile 120.

In addition, the two-row cladding structure according to an embodiment connects a lower end of the second heat retaining wall 200 disposed so as to face each other in the longitudinal direction at both ends in the excavation region 10. Buried reinforcing material 600 to be supported may be provided. That is, the buried reinforcement 600 is buried in the ground in the excavation region 10 in a state that is horizontally disposed between the second thermal mud wall 200 disposed to face each other. The buried reinforcement 600 includes a longitudinal buried beam 610 and a cross buried beam 620.

The longitudinal buried beams 610 are buried in the ground in the excavation area 10, which is a central position between the second thermal barrier walls 200 disposed to face each other, and supports the cross buried beams 620. It is absent. That is, the longitudinal buried beam 610 is connected to support the cross buried beam 620 to the upper end in the state buried in the ground in the excavation area (10).

The cross buried beam 620 is a lower end of the second row pile 210 of each of the second row mud wall 200 disposed to face both ends in the longitudinal direction in a state of being coupled to the upper end buried beam 610. To be coupled to As such, the cross buried beams 620 are connected to the lower end of the second row pile 210 of each of the second row mud wall 200 disposed to face each other, the bottom of the second row mud wall 200 Allows stable earth pressure support.

Figure 3 is a flow chart showing a two-row soil clogging method according to an embodiment of the present invention. Referring to FIG. 3, in the two-row soil clogging method, forming the order wall 110 (S100), installing the first column pile 120 (S110), and installing the second column pile 210. Step (S120), the step of installing the temporary support member 700 (S130), the step of installing the connection reinforcing material 300 and the slope reinforcing material 400 (S140), the step of installing the earth plate 220 (S150), The step of embedding the buried reinforcement (600) (S160), the step of forming a reinforced concrete wall portion 222 (S170).

First, the order wall 110 is formed vertically along the boundary line of the excavation region 10 (S100). At this time, the order wall 110 is generally formed through a known LW method or SCW method, but is not limited to this can be formed by selectively using a variety of known order method.

As such, when the order wall 110 is formed along the boundary line of the excavation region 10, the first column pile 120 is installed along the order wall 110 so as to be spaced apart from each other at regular intervals (S110). At this time, the first column pile 120 is installed so that the lower end is buried in the ground inside the excavation region 10 in a vertically arranged state.

Thereafter, the second row pile 210 is installed to be spaced apart in parallel with the first row pile 120 (S120). At this time, the first column pile 120 is installed to be embedded in the ground in the bottom of the excavation region 10 in a state disposed inside the excavation region (10).

In addition, a temporary supporting member 700 is installed to support the second column pile 120 disposed to face each other on the boundary line facing each other (S130). The temporary supporting member 700 performs a function of stably supporting the second column pile 120 when the installation of the connecting reinforcement member 300 and the inclined reinforcing member 400 will be described later. . Therefore, the temporary supporting member 700 is then dismantled after installing the connecting reinforcing material 300 and the inclined reinforcing material 400. The installation work of the temporary support member 700 first installs the temporary support pile 710 between the second row piles 210 disposed to face each other on the boundary line in the excavation region 10 facing each other. (S131). At this time, the temporary holding pile 710 is coupled to be installed in the ground in the excavation region 10, the lower end in a state disposed perpendicular to the ground in the excavation region (10). In addition, the temporary horizontal beam 720 is installed vertically on the upper end of the temporary support pile 710 on the boundary line of the excavation region 10 which is opposed to each other in the longitudinal direction of the temporary horizontal beam 720. Installed to be coupled to each of the second row pile 210 disposed to face each other (S132).

Thus, after the upper end of the second row pile 210 is supported by the temporary supporting member 700, the first row pile 120 to the connecting reinforcement 300 and the inclined reinforcement 400 ) And the second column pile 210 is connected (S140). In this case, the connecting reinforcing material 300 and the upper end of the first column pile 120 in both longitudinal directions in a state arranged horizontally between the first column pile 120 and the second column pile (210) The second row pile 210 is coupled to the upper end. In addition, the inclined reinforcing material 400 is one end in the longitudinal direction in the state arranged inclined between the first column pile 120 and the second column pile 210 is coupled to the first column pile 120, The other end in the longitudinal direction is coupled to the second row pile 210. That is, one end in the longitudinal direction of the inclined stiffener 400 is coupled to the upper end of the first column pile 120 to be disposed above the other end in the longitudinal direction of the inclined stiffener 400. In this case, the connecting reinforcing material 300 and the inclined reinforcing material 400 may be connected to the first row pile 120 and the second row pile 210 by welding, bolting or screw jack.

As described above, after the first row pile 120 and the second row pile 210 are connected to the connecting reinforcing material 300 and the inclined reinforcing material 400, the temporary supporting member 700 is connected. After dismantling, the earth plate 220 is installed between the second row piles 210 (S150). That is, more preferably, a plurality of plate members 221 are inserted and installed between the second column piles 210 to prevent the exposed portions between the second column piles 210.

As such, after the plate member 220 of the earth plate 220 is installed between the second row piles 210, the ground in the excavation area 10 in which the lower end of the second row piles 210 is embedded is provided. Grouting 211 is performed to reinforce the part. The grouting 211 maintains a lower end of the heat removal pile 210 in a stable upright state embedded in the ground in the excavation region 10, thereby stably supporting the earth pressure.

Subsequently, the reinforcing reinforcement 600 is embedded in the ground in the excavation region 10 so as to support the lower end of the second column pile 210 disposed to face each other on the boundary line of the excavation region 10 facing each other. (S160). The embedding work of the buried reinforcing material 600 includes the step of embedding the longitudinal buried beam 610 (S161), the step of embedding the cross buried beam 620 (S162). First, the embedding of the longitudinal buried beam 610 is the vertical buried beam (vertical buried in a vertical state between the second row pile 210 disposed to face on the boundary line of the excavation region 10 facing each other ( 610 is embedded in the ground inside the excavation area. Thereafter, the cross buried beams 620 are disposed on the ground inside the excavation area, so that both ends of the longitudinal buried beams 620 in the longitudinal direction thereof face each other on the boundary line of the excavation area 10. To be coupled to each lower end of the second column pile 210. At this time, both longitudinal ends of the cross buried beam 620 is connected to the lower end of the second column pile 210 through a fastening member such as welding, bolting, screw jack. In addition, the cross buried beam 620 is disposed on the upper portion of the longitudinal buried beam 610.

Thus, after installing the buried reinforcing material 600 to form a reinforced concrete wall portion 222 to the front surface of the plate member 221 of the second column pile 210 and the earth plate 220 (S170).

In addition, the first inclined reinforcement member 500 may be installed to reinforce and support the first column pile 120 and the second column pile 210. The longitudinal end of the auxiliary slope reinforcing material 500 is connected to the upper end of the first column pile 120 or the second column pile 210 and the other end in the longitudinal direction of the excavation region 10. Or it is buried in the outer underground. That is, when the one end in the longitudinal direction of the auxiliary slope reinforcing material 500 is coupled to the first row pile 120, the other end in the longitudinal direction is installed to be buried in the ground inside the excavation region (10). On the other hand, when the longitudinal end of the auxiliary slope reinforcing material 500 is coupled to the second row pile 210, the other end in the longitudinal direction is installed to be buried in the outer ground of the excavation region (10).

Thereafter, the reinforcement concrete wall portion 222 may be performed to additionally install a connection member 230 such as an earth anchor or a nail. That is, one end of the connecting member 230 is connected to the reinforced concrete wall portion 222, and the other end is buried in the ground outside the excavation region 10.

The two-row earthenware structure and the two-row earthenware method as described above, the first row mud wall 100 and the second row mud wall 100 side by side in a state spaced apart from each other on the boundary line of the excavation region (10). Is installed, the first thermal mud wall 100 and the second thermal mud wall 100 is the first and the bottom of the connecting reinforcement 300 and the inclined reinforcement 400 to be coupled to each other while the first The earth pressure applied to the hot mud wall 100 is distributed to the upper and lower ends of the second hot mud wall 200, and the earth and sand outside the excavation region 10 can be stably supported.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: first thermal barrier wall 110: the order wall
120: first row pile 200: second row mud wall
210: second row pile 220: earth plate
221: plate member 222: reinforced concrete wall portion
300: connection reinforcement 400: inclined reinforcement
500: auxiliary stiffener 600: buried reinforcement
610: vertical burial 620: cross burial
700: temporary support member 710: temporary support pile
720: Hypothesis horizontal report

Claims (12)

A first thermal mud wall including an order wall provided along a boundary of the excavation area and a first column pile vertically placed in the ground in a state spaced apart from each other along the order wall;
A second row mud wall having a second row pile vertically placed in the ground so as to be arranged side by side with the first row mud wall and a earth plate disposed between the second row piles;
A connecting reinforcing member connecting the first column pile and the second column pile in a state disposed horizontally between the first column pile and the second column pile; And
And a second row soil structure including an inclined reinforcing material connecting the first row pile and the second row pile in an inclined state between the first row pile and the second row pile. The method according to claim 1,
One end of the longitudinal reinforcement in the longitudinal direction is coupled to the first column pile,
The other two longitudinal ends of the inclined stiffener is connected to the second row pile inclined to be disposed below the one end in the longitudinal direction of the inclined stiffener. The method according to claim 1 or 2,
The inclined reinforcing material is a two-row soil structure is disposed inclined downward 110 to 160 degrees relative to the first row pile. The method according to claim 1,
The earth plate,
A plate member installed between the second row piles,
Two-row mud structure including a reinforced concrete wall portion coupled to the front surface of the plate member and the front surface of the second row pile. The method according to claim 1,
One end in the longitudinal direction is coupled to the first row pile, and the other end in the longitudinal direction is further provided with a second row stiffening structure further comprises an auxiliary slope reinforcement embedded in the ground in the excavation area. The method according to claim 5,
The auxiliary inclined stiffener is a two-row soil structure is disposed inclined downward 165 to 175 degrees relative to the first row pile. The method according to claim 1,
The second row mud structure including a buried reinforcement for connecting the second row mud wall in a state that is horizontally embedded between the second row mud wall disposed to face each other in the excavation area. Forming an order wall along a boundary of the excavation region;
Installing a first row pile perpendicular to the inside of the excavation region while being spaced apart from each other along the order wall;
Installing a second row pile perpendicular to the inside of the excavation region in a state parallel to the first row pile;
Installing a temporary support member to support the second row pile arranged to face each other on the boundary line facing each other;
Installing a connecting reinforcing material and an inclined reinforcing material to connect and support the first row pile and the second row pile;
Installing a earth plate between the second row piles;
Embedding buried reinforcement material in the excavation area to support the lower ends of the second row piles arranged to face each other on the boundary lines facing each other;
Forming a reinforced concrete wall portion of the second row pile and the front of the earth plate. The method according to claim 8,
Installing the temporary support member,
Coupling and installing the temporary support piles on the ground inside the excavation area perpendicularly between the second row piles disposed to face each other on the boundary lines facing each other;
And coupling the longitudinal ends of the horizontal horizontal beams vertically coupled to the upper end of the temporary supporting piles to the second row piles facing each other on the boundary lines facing each other. The method according to claim 8,
The connecting reinforcing material is connected to the first column pile and the second column pile, both ends in the longitudinal direction are horizontally disposed between the first column pile and the second column pile,
The inclined reinforcing material is inclined between the first column pile and the second column pile in one longitudinal direction is coupled to the first column pile, the other end in the longitudinal direction is coupled to the second column pile,
One end of the longitudinal reinforcement of the inclined stiffener is installed in a two-row earthquake construction method to be disposed above the other end in the longitudinal direction of the inclined stiffener. The method according to claim 8,
After the earth plate is installed, the second row earthen construction method further comprises a grouting operation for reinforcing the ground portion in the excavation area in which the lower end of the second row pile is embedded. The method according to claim 8,
Installing the buried reinforcement,
Embedding longitudinal buried beams in the ground inside the excavation area perpendicularly between the second row piles disposed to face each other on the boundary lines facing each other;
Coupling both ends of the longitudinal buried beams embedded in the ground inside the excavation area in the state of being coupled to the longitudinal buried beams to the second row piles facing each other on the boundary lines facing each other; Two-stage earthquake construction method.

Images