KR20130125554A

KR20130125554A - The land-side protection wall structure and its construction method

Info

Publication number: KR20130125554A
Application number: KR1020120049174A
Authority: KR
Inventors: 김동규
Original assignee: 김동규; 준이앤씨(주)
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2013-11-19

Abstract

The present invention relates to a sheathing structure which comprises a plurality of piles to be adjacent to each other into the shape of an arch to prevent the collapse of soil; a waling member shaped to correspond to the arrangement of the piles to support the piles; and a connection member to connect both ends of the waling member. The sheathing structure according to the present invention secures a wide space for work by removing struts to support the waling member; prevents the piles or the waling members from being deformed using a connection member connecting both ends of the waling members to prevent both ends of the waling member from being spaced apart from each other when earth pressure is applied to an earth-flow plate supported in the piles or to the piles by arranging the waling members to join the piles and the piles and into the shape of an arc; and firmly supports the piles and the earth-flow plate.

Description

The land-side protection wall structure and its construction method

The present invention relates to an earth block structure and a construction method thereof, which are installed to prevent the earth wall of the excavation section from collapsing when digging in the construction site.

The land use of Korea is mainly concentrated in large cities, and due to the lack of available land, high-rise and high-density urban areas are accelerating. As the use of high-rise and densified lands increases the size of underground structures, it is inevitable that close construction with neighboring buildings is inevitable. It is a frequent occurrence, resulting in a number of social problems caused by a number of complaints and civil and criminal disputes, including property loss. Therefore, the selection of construction methods and members for the construction of earthquakes for underground excavation has emerged as a very important factor.

In the conventional excavation work, an earth wall is installed to prevent the collapse of the earth wall of the excavation section. The earth wall is vertically installed with H-beams at predetermined intervals, and is vertically stacked therebetween.

A belt member is installed in a direction crossing the vertical H-beams to support the earth plate, and a support beam is installed to support the belt member. The bracing beam mainly uses H-beams, and if necessary, connects a plurality of H-beams.

The brace is installed in the transverse and longitudinal directions of the entire excavation surface, the installation number is also quite large. When such a large number of supports are installed, not only causes the construction cost by itself, but also occupies the work space, that is, the space of the excavated place, thereby deteriorating the workability.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an earthquake structure and a construction method thereof, which can secure a wide working space by omitting a brace supporting the strip member.

Soil structure according to the present invention for achieving the above object is a pile structure having an arc-shaped structure and inserted into the ground to prevent soil collapse; And a connecting member connecting both sides of the pile structure.

The pile structure includes a plurality of piles, the pile structure is disposed adjacent to each other, the pile structure is formed in a shape corresponding to the shape of the arrangement of the piles; It is done.

Each of the pile is formed in each of the opposing sides along the longitudinal direction, respectively, the earth plate is inserted into the fitting grooves of the adjacent piles respectively and laminated along the longitudinal direction of the pile; It is done.

The strip member is divided into a plurality in the longitudinal direction and characterized in that it comprises a plurality of unit link members rotatably coupled to each other.

Each of the unit link members is provided with a protrusion protruding in an extension direction of the unit link member at one end so as to be rotatably coupled to respective ends of the adjacent unit link members on both sides, and the protrusion enters the other end. An inlet portion having a shape corresponding to the shape of the protrusion is formed to be rotatable, and when the protrusion is rotated in the inlet portion, the inlet portion interferes with the protrusion so that the unit link members adjacent to the unit link members rotate. It characterized in that it comprises a rotation preventing pin coupled to the unit link member to limit.

According to an embodiment of the present invention, a construction method for constructing a clam structure according to the present invention includes an insertion step of inserting a plurality of files to form an arc shape to prevent the soil from falling down; A strip member coupling step of coupling the strip member formed in a shape corresponding to the arrangement shape of the piles to one side of the piles; And a connecting step of connecting both ends of the strip member to a connection member.

In the inserting step, the plurality of piles are arranged to be spaced apart at predetermined intervals, and the earth plate is coupled between the piles having fitting grooves formed along a longitudinal direction on both sides of the excavating stage and the strip member coupling stage, respectively. It characterized in that it comprises a earth plate bonding step.

According to the earth block structure according to the present invention, not only can secure a wide work space by omitting the brace supporting the strip member, the files are arranged in an arc shape, and the strip member for coupling the piles together is also formed in an arc shape. Prevents the shape of the pile or strip member from being deformed through a connecting member connecting both ends of the strip member to prevent the ends of the strip member from spreading away from each other when the earth pressure is applied to the earth plate or pile supported by the pile. The pile and the earth plate can be firmly supported.

1 is a perspective view showing a retainer structure according to a first embodiment of the present invention.
Figure 2 is a plan view showing a state in which the construction of the earth block shown in FIG.
3 is a perspective view of the strip member shown in FIG. 1 and FIG.
Figure 4 is an exploded perspective view showing the strip member shown in FIG.
5 is a perspective view showing a retainer structure according to a second embodiment of the present invention.
Figure 6 is a plan view showing a state in which the construction of the earth block shown in FIG.
7 is a perspective view showing a retainer structure according to a third embodiment of the present invention.
8 is a cross-sectional view illustrating a drilling step for constructing the earth block structure shown in FIG. 7.
FIG. 9 is a cross-sectional view illustrating a step of inserting a reinforcing bar frame for constructing the earth block structure shown in FIG. 7. FIG.
FIG. 10 is a cross-sectional view illustrating a step of pouring concrete mortar for constructing the soil structure shown in FIG. 7. FIG.
FIG. 11 is a cross-sectional view of a perforation step for constructing the soil structure shown in FIG. 7. FIG.
FIG. 12 is a cross-sectional view illustrating a step of placing a reinforcing frame insert and concrete mortar for constructing a structure shown in FIG. 7; FIG.

Hereinafter, with reference to the accompanying drawings, it will be described in detail with respect to the earth structure according to an embodiment of the present invention. 1 and 2 show the earth retaining structure according to the first embodiment of the present invention.

1 and 2, the earth retaining structure 1 of the present invention corresponds to a shape in which the plurality of piles 10 and the piles 10 are arranged in an arc shape and inserted into the ground to be excavated. Formed in the shape of an arc to be coupled to one side of the band member 30 is coupled to one side of the pile (10) arranged to face the excavation surface formed when excavating the excavation target, the earth pressure to act toward the excavated space (S) It includes a connecting member 40 for connecting both ends of the strip member 30 to prevent both ends of the strip member 30 is coupled to the pile 10 by the earth pressure acting on the pile (10).

The pile 10 is a vertical portion connecting the central portions of the first horizontal portion 11 and the second horizontal portion 12 and the first and second horizontal portions 11 and 12 that face each other and extend up and down. (13). The pile 10 has a fitting groove into which one end of the earth plate 20 to be described later is inserted at both sides by the vertical portion 13. The first and second horizontal portions 12 are not separately divided, but for convenience of description, a portion disposed toward the excavation surface formed during the excavation process will be referred to as a first horizontal portion 11.

The piles 10 are spaced apart from each other at predetermined intervals on the excavation target site and are inserted into the ground through a press-fit means for press-fitting into the ground. The piles 10 are arranged such that an extension line connecting the piles 10 at the excavation target forms a curved shape having a predetermined curvature.

Between the piles 10, a plurality of earth plates 20 are stacked in the longitudinal direction of the piles 10 so as to prevent the drilling surface from collapsing toward the space S excavated by the earth pressure. .

Both ends of the earth plate 20 are fitted into fitting grooves of both side piles 10 disposed to be adjacent to each other. The earth plate 20 is shorter than an interval between the vertical portions 13 of both piles 10 and is formed longer than an interval between the first horizontal portion 11 or the second horizontal portion 12 to excavate the space. Even if the earth pressure acts on the (S) side, the second horizontal portion 12 is not caught and pushed to the excavated space S side, and the excavation surface is prevented from collapsing.

The strip member 30 is coupled to the pile 10 to prevent the pile 10 from being bent by acting as the earth pressure of the pile 10 is unbearable to the earth plate 20, and acts as a support, the excavation surface And are respectively coupled to the second horizontal portion 12 of the pile 10 which is arranged to face.

The strip member 30 extends in a direction orthogonal to the extending direction of the pile 10, and is disposed to be spaced a predetermined distance in the extending direction of the pile 10.

The strip member 30 is formed to be bent at a predetermined curvature so that the plurality of piles 10 may be coupled to each other. That is, the strip member 30 is formed in a shape corresponding to the arrangement shape of the piles (10).

The strip member 30 may be applied to the H-shaped steel that is commonly used, but it is preferable to apply a plate-shaped to be formed in an arc shape according to the arrangement shape of the piles 10 as shown.

The strip member 30 and the pile 10 may be welded, or may be fastened through bolts as shown.

The strip member 30 is an arc-shaped convex protruding portion is disposed toward the excavation surface, it is possible to improve the resistance to earth pressure than the strip member structure formed in the conventional flat when the earth pressure acts from the excavation surface.

Both ends of the strip member 30 has a large earth pressure applied to the earth plate 20 so that the pile 10 can not withstand, the pile 10 is bent, or the strip 10 by the bent pile 10 The connecting member 40 is connected to prevent the deformation of the shape of the.

The connecting member 40 has a belt member 30 when the earth pressure acts toward the inside of the excavated space S at the point where the second horizontal portion 12 and the belt member 30 of the pile 10 are coupled. Deformed to be pulled into the excavated space (S), or to be drawn toward the inside of the space to prevent the both ends of the strip-like member 30 to open in a direction away from each other.

That is, the connecting member 40 supports the both ends of the belt member 30 so that both ends of the belt member 30 do not open when a tension force is applied to the both ends of the belt member 30 in a direction away from each other by earth pressure. The shape is maintained to correspond to the arrangement shape of the piles 10, and consequently, the strip member 30 is kept coupled to the piles 10, respectively.

The connecting member 40 is provided with a steel bar, one end is respectively coupled to both ends of the strip member 30, the other end of the steel bar is coupled to the turnbuckle 45, respectively. The distance between the end portions of the steel rods may be adjusted according to the rotation direction of the turnbuckle.

The connecting member 40 may be applied to the wire rope as shown, and since the tensile force acts by the earth pressure, it is preferable to form a material having a small elongation and a high tensile strength.

In FIG. 2, reference numeral G denotes a ground formed by backfilling soil excavated behind the earth plate after installing the earth plate 20 on the pile.

Unlike the one shown in FIGS. 1 and 2, the pile structure may be integrally formed without being composed of a plurality of piles. That is, the pile structure itself extends vertically and long enough to be inserted into the ground, and is formed to be curved to have an arc-shaped structure.

When forming the retaining structure using the pile structure of the above structure can be omitted the strip member, it is also possible to connect the connecting member directly to both sides of the pile structure.

3 and 4 illustrate a strip member 130 that is capable of changing the shape of the strip member correspondingly as the arrangement shape of the piles 10 is changed. 3 and 4, the strip member 130 includes a plurality of unit link members 131 which are divided into a plurality of parts along the longitudinal direction and are rotatably coupled to each other.

The unit link members 131 may have protrusions 132 protruding in an extension direction of the unit link member 131 at one end thereof so as to be rotatably coupled to respective ends of adjacent unit link members 131. At the other end, an inlet portion 135 having a shape corresponding to the shape of the protrusion 132 is formed so that the protrusion 132 of the adjacent unit link member 131 is rotatable.

The protruding portion 132 and the inlet portion 135 is formed with a through hole penetrating up and down, and the connecting hole 141 for rotatably supporting the respective unit link members 131 is inserted into the through hole. . The lower outer circumferential surface of the connecting pin 141 is formed with a screw thread to be screwed to the nut member 143, but is formed only in the lower portion.

Protruding portion 132 and the rotary coupling portion 133 is coupled to the inlet portion 135 of one side unit link member 131 adjacent to the rotatable unit link member 131 in the inlet portion 135, and the rotation An interference protrusion 134 extending along the extension direction of the unit link member 131 from the coupling portion 133 is formed. The interference protrusion 134 is formed to have a thickness corresponding to half of the thickness of the unit link member 131.

The inlet portion 135 further includes a rotation coupling groove 136 in which the rotation coupling portion 133 is rotatably installed, and is further introduced into the unit link member 131 from the rotation coupling groove 136, thereby interfering with the interference protrusion 134. ) Is formed an interference groove 137 is received. The interference groove 137 is introduced to the inside of the unit link member 131 from the rotary coupling groove 136 is formed so that only one side of both sides is open to the outside. That is, the side opposite to the side on which the interference groove 137 is formed has a structure in which the interference groove 137 is not formed.

The unit link member 131 is formed with a screw groove penetrated in a side direction from which the interference groove 137 is formed from a side opposite to the side surface on which the interference groove 137 is formed.

In the screw groove, when the earth pressure acts on the earth plate 20, the unit link member 131 on the other side is unfolded in a parallel direction with respect to the unit link member 131 on one side, that is, the unit link members 131 are rotated. The anti-rotation pin which prevents the interference protrusion 132 from rotating toward the interference groove 137 while traveling in the direction toward the inside of the excavated space S where the protruding portion 132 and the inlet portion 135 which are possibly coupled are excavated. 145 is combined.

The anti-rotation pin 145 is inserted into the screw groove is exposed to the interference groove 137 and can adjust the angle formed by the unit link members 131 according to the exposed length.

In the drawing, reference numeral 142 denotes a washer member coupled to the connecting pin 141 to be in contact with the top and bottom surfaces of the unit link member 131.

On the other hand, Figure 5 and Figure 6 is shown the earth retaining structure according to the third embodiment of the present invention. 5 and 6, the retainer structure 2 according to the present invention includes piles 110, a band member 30, and a connection member 40.

Each pile 110 is formed of a wall 111 having a hat-shaped cross section, a first joint 115 and a first joint 115 which may be coupled to a wall 111 of a pile 110 adjacent to both ends of the wall 111. Two joints 116 are formed, respectively.

The first joint 115 and the second joint 116 have a structure that is rolled in a direction facing each other, the first joint 115 is slidingly coupled to the second joint 116 of the adjacent wall 111 The second joint 116 is slidably coupled to the first joint 115 of the adjacent wall 111.

The piles 110 are preferably arranged such that the first joint 115 and the second joint 116 face the excavation surface side so as to couple the strip member 30 to the wall 111.

The piles 110 are inserted into the ground one by one in the state in which the second joint 116 is inserted into the first joint 115, but are inclinedly inserted with respect to the wall 111 of one side that is already installed. As described above, the other side wall 111 is inclined with respect to the one side wall 111 so that the piles 110 form an arc shape.

The strip member 30 is the pile 110 is welded to the wall 111 is formed in an arc shape corresponding to the arrangement shape of the pile.

The connection member 40 is coupled to both ends of the belt member 30 to prevent the shape of the belt member 30 from being deformed when earth pressure is applied to the pile 110. Since the connection member 40 has the same function as the strip member 30 described with reference to FIGS. 1 and 2, the redundant description is omitted.

Although not shown in the drawing, the strip member 30 may be formed of a plurality of divided unit link members that are rotatably coupled to each other as illustrated in FIGS. 3 and 4.

7 is a block structure according to a fourth embodiment of the present invention.

Referring to FIG. 7, the earth block structure 3 according to the present invention has a plurality of piles 210 arranged in an arc shape and inserted into the ground, and a shape corresponding to the arrangement of the piles 210. It is provided with a belt member 30 is formed and coupled to the pile 210, and a connecting member 40 for connecting both ends of the belt member 30 to prevent deformation of the belt member 30.

The piles 210 are arranged to be adjacent to each other to form an arc shape.

The pile 210 is formed by drilling a hole into the ground and placing concrete mortar in the hole into which the reinforcing frame is inserted. The process of installing the pile 210 as shown in FIGS. 8 to 12 is illustrated in FIGS. A structure in which the pile 210 is provided in an arc shape will be described with reference to FIGS. 8 to 12.

The holes H having the diameter set in the ground G are spaced apart by the set interval D, wherein the set interval D is set at least larger than the set inner diameter φ of the set hole. This is to place another pile 210 between the piles 210 by making it possible to form the holes H between the holes H.

When the plurality of holes H are formed, the reinforcing frame 211 formed in the shape corresponding to the shape of the hole H is inserted into the hole H, and the concrete mortar 212 is poured to form the pile 210. .

Subsequently, perforations between the files 210 spaced apart at the set interval D and inserting the reinforcing frame 211, and then cast concrete mortar 212 to form another pile (210).

Through the above process, the plurality of files 210 may be arranged to be adjacent to each other. In order to place the piles 210 in close proximity, the spacing between the holes H, i.e., the set spacing D, is preferably made to be substantially similar to the inner diameter φ of the set holes, and the file 210 In order to drill another hole H between them, it is preferable that the previously poured concrete mortar 212 is performed in a sufficiently dried state.

On the other hand, the pile 210 is made of a reinforcing frame 211 and concrete 212, but differently, the interior is empty, made of a metal material may be applied to have a circular cross section. In this case, the drilling time and the concrete mortar pouring work are omitted to form the pile, so that the work time is shortened.

Soil structure according to the present invention described above has been described with reference to one embodiment shown in the drawings, but this is only an example, and those skilled in the art have various modifications and equivalent other embodiments therefrom I understand that it is possible.

Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

1,2,3: earth block structure
10,110,210: files
30, 130: strip member
40:

Claims

A pile structure inserted into the ground and having an arc-shaped structure to prevent the soil from collapsing;
And a connecting member connecting both sides of the pile structure.

The method of claim 1,
The file structure includes a plurality of files arranged to be adjacent to each other,
The pile structure is formed in a shape corresponding to the arrangement shape of the piles to support the piles; Earthwork structure, characterized in that installed.

3. The method of claim 2,
Each of the pile is formed in each of the opposing sides to be fitted along the longitudinal direction, respectively,
And an earth plate having both ends respectively inserted into fitting grooves of the piles adjacent to each other and stacked along the longitudinal direction of the pile.

The method according to claim 2 or 3,
The strip member comprises a plurality of unit link members are formed in a plurality in the longitudinal direction and are coupled to each other rotatably.

5. The method of claim 4,
Each of the unit link members is provided with a protrusion protruding in an extension direction of the unit link member at one end so as to be rotatably coupled to respective ends of the adjacent unit link members on both sides, and the protrusion enters the other end. An inlet portion having a shape corresponding to the shape of the protrusion is formed so as to be rotatable.
And a rotation preventing pin coupled to the unit link member so that the unit link members adjacent to the unit link members are interfered with the protrusion when the protrusion is rotated at the inlet, thereby limiting the degree of rotation. Crust structure.

An insertion step of inserting a plurality of files into the ground to form an arc shape for preventing the soil from falling down;
A strip member coupling step of coupling the strip member formed in a shape corresponding to the arrangement shape of the piles to one side of the piles;
And a connecting step of connecting both ends of the strip member to a connecting member.

The method according to claim 6,
The inserting step is arranged to space the plurality of files at a predetermined interval,
And an earth plate coupling step for coupling the earth plate between the piles having fitting grooves formed in the longitudinal direction on both sides facing each other between the excavating step and the strip member coupling step.