Retaining wall assembly having reinforce section of pile inserted portion and retaining wall construction method using this

Abstract

The present invention relates to an earth retaining reinforcement assembly with a reinforced pile embedment and an earth retaining method using the same, wherein, from an embodiment of a structure comprising a longitudinal member, a coupling, a cross member, and an earth retaining wall, reinforcing forces in the transverse and inclined directions are applied to the embedment of a longitudinal pile driven into the ground in a front row and a rear row, and the longitudinal pile and the coupling are integrated with soil cement to generate reinforcing forces between the longitudinal pile and the transverse and inclined reinforcing members, thereby increasing the stiffness and frictional resistance of the embedded pile member and increasing the stability of the earth retaining wall.

Description

Technology Field

[0001] The present invention relates to an earth retaining reinforcement assembly with a reinforced pile embedment and an earth retaining method using the same. More specifically, it relates to an earth retaining reinforcement assembly with a reinforced pile embedment used when installing an earth retaining structure after ground excavation and when constructing an underground structure, and an earth retaining method using the same. Background Technology

[0003] Earth retaining walls (temporary earth retaining structures) are typically temporary structures installed in excavated underground spaces to prevent ground collapse when constructing underground structures.

[0004] These earth retaining walls are widely used in civil engineering projects such as subway construction, and in architecture, they are extensively used for the construction of building basements.

[0005] However, current earth retaining methods are uneconomical due to the use of a large number of struts, and not only is it difficult to secure workspace, but they are also structurally inefficient, raising concerns about subsidence of the surrounding ground.

[0006] However, most construction sites are still using conventional methods, and there are ongoing demands for improvements to these methods.

[0007] In conventional earth retaining methods, H-piles are installed at the site at regular intervals, and earth retaining walls are constructed by inserting sheet piles between them simultaneously with excavation, followed by the installation of bracing beams to support the walls.

[0008] Although this method is relatively simple, economical, and has a short construction period, and can function as a rigid retaining wall, water-blocking effects cannot be expected based on soil conditions; consequently, significant displacement occurs at the top head, leading to substantial loosening of the ground behind it. Prior art literature

[0010] Registered Patent No. 10-1262357 The problem to be solved

[0011] The present invention was developed to improve upon the aforementioned problems and aims to provide an earth retaining reinforcement assembly with a reinforced pile embedment and an earth retaining method using the same, wherein reinforcing forces in the transverse and diagonal directions are applied to the embedment of a longitudinal pile driven into the ground in a front and rear row, and the longitudinal pile and the coupling are integrated with soil cement to generate reinforcing forces between the longitudinal pile and the transverse and diagonal reinforcing material, thereby increasing the stiffness and frictional resistance of the embedded pile member and increasing the stability of the earth retaining structure. means of solving the problem

[0013] To achieve the above objectives, the present invention provides an earth retaining method using an earth retaining reinforcement assembly that reinforces a pile embedment, characterized by comprising: a first step of forming a soil cement in a paste state by injecting cement while excavating and drilling a construction target surface and mixing the soil generated from the ground with the cement; and a second step of placing a reinforcement assembly, comprising a plurality of vertical main members arranged vertically on the construction target surface and a plurality of intersecting members crossing or intersecting the plurality of vertical main members, into an installation space before the soil cement is cured.

[0014] Herein, the method further comprises the steps of: fabricating the reinforcement assembly by penetrating and joining the longitudinal member to a coupling connected to the ends of each of the plurality of cross members before seating the reinforcement assembly in the installation space; joining the head of the longitudinal member to a retaining wall after the reinforcement assembly is seated in the installation space; and, upon completion of construction, withdrawing each of the plurality of longitudinal members from the installation space from the coupling after the soil cement filled between the coupling and the plurality of longitudinal members and the installation space has cured.

[0015] Here, the extraction process for each of the multiple vertical members may be omitted depending on the case.

[0016] At this time, the method further includes the process of connecting a fixing rod to a plurality of couplings arranged along the vertical direction of each of the vertical members to maintain the vertical and horizontal spacing of the couplings.

[0017] Meanwhile, the present invention may also provide an earth retaining reinforcement assembly that reinforces a pile embedment, comprising: a plurality of vertical members erected on a construction target surface; a plurality of couplings arranged along the upper and lower directions of each of the plurality of vertical members; a plurality of intersecting members having ends coupled to the couplings and crossing or intersecting the plurality of vertical members; and an earth retaining wall coupled to the plurality of vertical members to restrict the inflow of soil from the unexcavated ground of the construction target surface into the installation space, wherein the reinforcement assembly is formed by including the plurality of vertical members, the couplings, the plurality of intersecting members, and the earth retaining wall.

[0018] Herein, it is characterized by further including a fixing rod that maintains the vertical and horizontal spacing of the couplings by being coupled to a plurality of couplings that are arranged through each of the vertical members along the vertical direction. Effects of the invention

[0020] According to the present invention with the above-described configuration, reinforcing forces in the transverse and inclined directions are applied to the embedded portion of a longitudinal pile driven into the ground, forming a front row and a rear row. Furthermore, the longitudinal pile and the coupling are integrated with soil cement to generate reinforcing forces between the longitudinal pile and the transverse and inclined reinforcing materials, thereby increasing the stiffness and frictional resistance of the embedded pile member and thus having the advantage of increasing the stability of the earth retaining wall.

[0021] In particular, the present invention, in configuring a reinforcing assembly, combines a cross member including a horizontal member and an inclined member with a longitudinal main member, and inserts the reinforcing assembly into a paste-like soil cement produced by mixing the ground with grout or cement injection using a drilling machine; when the soil cement solidifies, it is possible to increase the stiffness of the member in the unexcavated part and the frictional resistance between the embedded ground and the member. Brief explanation of the drawing

[0023] FIG. 1 is a conceptual diagram illustrating a state in which an earth retaining reinforcement assembly, having reinforced a pile embedment portion according to an embodiment of the present invention, is buried underground. FIG. 2 is a conceptual plan view illustrating a state in which an earth retaining reinforcement assembly, reinforced with a pile embedment portion according to various embodiments of the present invention, is buried underground. FIGS. 3 and 4 are conceptual perspective views sequentially illustrating the process of assembling an earth retaining reinforcement assembly with a pile embedment reinforced according to an embodiment of the present invention. FIGS. 5 to 7 are conceptual perspective drawings sequentially illustrating a series of processes for installing an underground structure by burying an earth retaining reinforcement assembly with a pile embedment portion reinforced according to another embodiment of the present invention in the ground and excavating the construction surface. FIG. 8 is a conceptual perspective view illustrating the state in which an earth retaining reinforcement assembly reinforcing a pile embedment and an underground structure are installed according to another embodiment of the present invention. FIGS. 9 and 10 are perspective conceptual views illustrating the overall structure of an earth retaining reinforcement assembly with a pile embedment reinforced according to another embodiment of the present invention. FIGS. 11 to 13 are perspective conceptual diagrams sequentially illustrating the construction process of an earth retaining reinforcement assembly with a pile embedment reinforced according to another embodiment of the present invention. FIGS. 14 to 16 are perspective conceptual diagrams sequentially illustrating the construction process of an earth retaining reinforcement assembly with a pile embedment reinforced according to another embodiment of the present invention. FIGS. 17 to 21 are perspective conceptual views illustrating the structure of a fixing rod of an earth retaining reinforcement assembly that reinforces a pile embedment portion according to various embodiments of the present invention. Specific details for implementing the invention

[0024] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings.

[0025] However, the present invention is not limited to the embodiments disclosed below but will be implemented in various different forms.

[0026] The embodiments described in this specification are provided to ensure that the disclosure of the invention is complete and to fully inform those skilled in the art of the scope of the invention.

[0027] And the present invention is defined only by the scope of the claims.

[0028] Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described to avoid the invention being interpreted ambiguously.

[0029] Additionally, throughout the specification, the same reference numerals refer to the same components, and the terms used (mentioned) in this specification are for describing embodiments and are not intended to limit the invention.

[0030] In this specification, the singular form includes the plural form unless specifically stated otherwise in the text, and components and operations referred to as 'comprising (or comprising)' do not exclude the presence or addition of one or more other components and operations.

[0031] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention belongs.

[0032] Also, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless otherwise defined.

[0034] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

[0035] First, FIG. 1 is a conceptual diagram illustrating the state in which an earth retaining reinforcement assembly with a pile embedment portion reinforced according to one embodiment of the present invention is buried underground.

[0037] As shown in FIG. 1, the present invention may apply an embodiment of a structure comprising a vertical member (100), a coupling (300), a cross member (200), and a retaining wall (250).

[0038] The vertical members (100) are erected in multiple numbers on the construction target surface (400).

[0039] For example, the vertical members (100) can be arranged to form a square with 4 to 5 members, or more members can be arranged to form multiple rows and columns.

[0040] The coupling (300) is arranged along the upper and lower directions of each of the plurality of vertical members (100) and is fixed by a fixing rod (600) to be described later.

[0041] The fixing of the vertical member (100) and the coupling (300) is achieved by a fixing pack (not shown below), grout, and soil cement, which will be described later.

[0042] The intersecting member (200) has an end that is coupled to the coupling (300) and is arranged in a direction that crosses or intersects with respect to a plurality of longitudinal members (100).

[0043] The intersecting member (200) is provided to increase structural strength by connecting multiple vertical members (100), that is, multiple vertical members (100) including two rows such as a front row and a rear row.

[0044] The earth retaining wall (250) is connected to a plurality of vertical members (100) and is provided to prevent soil from the unexcavated ground of the construction target surface (400) from flowing in.

[0045] Accordingly, a reinforcing assembly (10) is formed by including a plurality of vertical members (100), a coupling (300), a plurality of intersecting members (200), and a retaining wall (250).

[0046] The present invention is applicable to the above-described embodiments, and it goes without saying that it is also applicable to various embodiments as follows.

[0048] First of all, the vertical member (100) may use an H-beam as shown in the drawings of the present invention, or, although not specifically shown, may use a steel plate, an I-beam, a polygonal column, or a cylindrical column.

[0050] Meanwhile, the cross member (200) may include a plurality of hinge moldings (210) that are rotatably coupled to a coupling (300) coupled to each of a plurality of vertical members (100) that are set up in two rows.

[0051] In addition to the hinge molding (210), it is also possible to connect to the coupling (300) by means such as hinges, bolting connections, and welding fixing, although not specifically illustrated.

[0052] And, the intersecting member (200) may include a horizontal member (220) that has an end connected to each of the hinge moldings (210) and is arranged in a direction that crosses the plurality of vertical members (100) that are set up in two rows.

[0053] Additionally, the intersecting member (200) may include a pair of inclined members (230) that are arranged at an angle and intersect each other with a plurality of vertical members (100) that are set up in two rows, each having an end that is connected to each of the hinge moldings (210).

[0054] By forming an "X" shaped, " / " shaped, or "\" shaped truss structure as shown in FIGS. 1 and FIGS. 4 to 10 by a pair of inclined members (230), structural strength and load distribution support will be possible.

[0055] That is, by arranging a combination of a horizontal member (220) that crosses the vertical main member (100) in a straight line shape and an inclined member (230) that intersects in an X shape, the structural strength can be further increased and load distribution support can be achieved.

[0057] Meanwhile, the cross member (200) may further be provided with a molding support piece (240) that protrudes from each of the outer surfaces facing each other of the coupling (300) and supports a plurality of hinge moldings (210).

[0058] Here, depending on the distance between the outer surface of the coupling (300) and the outer surface of the other coupling (300) facing it, it is possible to install a molding support piece (240) and fasten a hinge molding (210) by adding support adjustment pieces (241, 242) having different thicknesses, lengths, and areas as shown in (b) and (c) of FIG. 10.

[0060] Meanwhile, a plurality of couplings (300) arranged along the upper and lower directions of each vertical member (100) may further be provided with a fixing rod (600) arranged in a direction in which the vertical member (100) is seated on the soil cement or in a direction that crosses the vertical member (100).

[0061] The fixing rod (600) can be provided to maintain its shape so that the reinforcing assembly (10) is installed in the installation space (500) while maintaining the overall structure of the reinforcing assembly (10) and so that the vertical members (100) can be separated from the installation space (500) and recycled after the soil cement described later is cured, by maintaining the coupling (300) in a combined state with the coupling (300).

[0062] Once the soil cement is cured and a retaining wall (510, see FIG. 1 and FIG. 2 below) is formed in the installation space (500), and after the excavation of the retaining wall and the installation of the underground structure (900) is completed, the tack welded part is removed and the fixing rod (600) and the vertical member (100) are clamped using heavy equipment (not shown below) and pulled out from the installation space (500).

[0063] That is, the vertical member (100) is not fixed in a state of being coupled to the coupling (300), but is fixed by soil cement that has seeped between the inner surface of the coupling (300) and the outer surface of the vertical member (100), so it can be pulled up and separated from the installation space (500) to some extent smoothly by the pulling power of heavy equipment.

[0065] Here, the upper portion of each vertical member (100) erected in front and back in two or more rows in the installation space (500) may be further provided with a head (101) formed by being exposed from the construction target surface (400).

[0066] At this time, an upper transverse reinforcing member (700) having two ends intersecting the head (101) can be arranged orthogonally to the vertical main member (100) standing in two rows as shown in FIGS. 5 to 9.

[0067] In addition, to maintain the contact fixation state of each of the head (101) and the upper transverse reinforcing member (700), a pair of connecting contact pieces (810) may be contacted and disposed on the outer surface of each of the head (101) and the upper transverse reinforcing member (700).

[0068] In addition, a pair of auxiliary fixing rods (820) may be further provided, which are connected by penetrating each of a pair of connecting contact pieces (810) that are in contact with the outer surface of the head (101) and a pair of connecting contact pieces (810) that are in contact with the outer surface of the upper transverse reinforcing member (700).

[0069] Accordingly, the combined state of the head (101) and the upper transverse reinforcing member (700), which maintains a contact-fixed state by means of the connecting contact piece (810) and the auxiliary fixing rod (820), will be maintained until the completion of construction of the underground structure (900).

[0071] In some cases, when the width and depth of the installation space (500) are large, an upper connecting reinforcing member (750) that interconnects the upper transverse reinforcing member (700) provided in one reinforcing assembly (10) and the upper transverse reinforcing member (700) provided in an adjacent reinforcing assembly (10) as shown in FIG. 9 may be further provided.

[0072] Here, the upper connecting reinforcing member (750) is orthogonal to each of the upper transverse reinforcing members (700) on both sides, and it is possible to design an application and modification that maintains a contact-fixed state in the orthogonally intersecting portion by means of the aforementioned connecting contact piece (810) and auxiliary fixing rod (820).

[0074] Hereinafter, a retaining wall construction method using a retaining wall reinforcement assembly that reinforces the pile embedment portion according to various embodiments of the present invention will be described with reference to FIGS. 3 to 10.

[0075] For reference, FIGS. 3 and 4 are perspective conceptual diagrams sequentially illustrating the process of assembling an earth retaining reinforcement assembly that reinforces a pile embedment according to one embodiment of the present invention.

[0076] Also, FIGS. 5 to 7 are perspective conceptual diagrams sequentially illustrating a series of processes for installing an underground structure by burying an earth retaining reinforcement assembly with a pile embedment portion reinforced according to another embodiment of the present invention in the ground and excavating the construction target surface (400).

[0077] In addition, FIG. 8 is a perspective conceptual diagram showing the state in which an earth retaining reinforcement assembly and an underground structure (900) are installed, with the pile embedment reinforced according to another embodiment of the present invention.

[0078] In addition, FIGS. 9 and 10 are perspective conceptual diagrams illustrating the overall structure of an earth retaining reinforcement assembly that reinforces a pile embedment according to another embodiment of the present invention.

[0080] First, the worker excavates and drills the construction target surface (400) and injects cement to mix the soil and cement generated from the ground to form a paste-like soil cement (S1: first step).

[0081] Then, the worker places a reinforcing assembly (10), comprising a plurality of vertical members (100) arranged vertically on the construction surface (400) and a plurality of intersecting members (200) crossing or intersecting the plurality of vertical members (100), in an installation space (500) before the soil cement is cured (S2: second step).

[0082] Here, before seating the reinforcement assembly (10) in the installation space (500), the reinforcement assembly (10) can be manufactured by connecting the longitudinal member (100) through the coupling (300) to which the ends of each of the plurality of cross members (200) are connected.

[0083] At this time, after the reinforcing assembly (10) is seated in the installation space (500), the head (101) of the vertical member (100) and the earth retaining wall (250) may be joined to the upper transverse reinforcing member (700) and the tie beam (260), respectively.

[0084] Additionally, after the second step (S2), when the construction of the underground structure (900) is completed after the soil cement filled between the coupling (300) and the plurality of vertical members (100) and the installation space (500) has cured, the operation of withdrawing each of the plurality of vertical members (100) from the coupling (300) and from the installation space (500) can be additionally performed.

[0086] Meanwhile, the present invention may additionally perform the task of placing a retaining wall (250) between one of the plurality of vertical members (100) and an adjacent vertical member (100).

[0087] In addition, the present invention may additionally perform the task of welding and fixing a tie beam (260) that supports the earth retaining wall (250) to the coupling (300) provided at the top of the plurality of couplings (300).

[0088] Here, the tie beam (260) is arranged across the vertical main member (100), and the aforementioned earth retaining wall (250) can be selectively used as either a water cutoff wall or an earth retaining wall depending on the construction environment.

[0089] At this time, the tie beam (260) may use an H-beam like the vertical member (100), or a steel plate or a steel pipe in the shape of a polygonal column or a cylindrical column.

[0090] In addition, the present invention may additionally perform the operation of welding a fixing rod (600) to a plurality of couplings (300) arranged along the upper and lower directions of each of the vertical members (100), such that the vertical member (100) is seated in the soil cement or is arranged in a direction that crosses the vertical member (100).

[0092] Afterwards, additional soil removal work is carried out as shown in FIG. 6 with the reinforcement assembly (10) installed, and after the soil removal work is carried out, the installation of a structure for the foundation of an underground structure (900) or a building can be carried out as shown in FIG. 7 and FIG. 8.

[0094] Meanwhile, since the coupling (300) has a larger internal space compared to the cross-sectional size of the vertical member (100) including the H-beam as shown in FIG. 10 (a), a plurality of gap materials (310) can be added to secure space between the outer surface or edge of the H-beam-shaped vertical member (100) and the inner surface of the coupling (300) so that soil cement can be filled.

[0095] In order for the coupling (300) to maintain durability against twisting, pressure, shear load, etc., caused by the inflow and curing of soil cement, the intersecting members (200) coupled to the coupling (300) together with the gap material (310), a coupling reinforcement part (320) may be added between the inner surface of the coupling (300) and the outer surface or edge of the longitudinal main member (100).

[0096] Here, the gap material (310) and the coupling reinforcement part (320) are fixed only to the inner surface of the coupling (300) and are not fixed to the vertical main member (100).

[0097] At this time, depending on the case, the coupling (300) may be manufactured in a box shape so that the lower surface of the lower part is sealed and can accommodate the lower part of the vertical member (100).

[0098] In addition, the coupling (300) may be fixed to the longitudinal member (100) by soil cement or grout material filled between the inner surface of the coupling (300) and the longitudinal member (100), and in addition to the aforementioned gap material (310) and coupling reinforcement part (320), it may also be fixed by a fixing pack inserted between the inner surface of the coupling (300) and the longitudinal member (100), although not specifically illustrated.

[0099] In addition, although the coupling (300) is illustrated in the present invention as a square box shape, it is not necessarily limited to this shape. It is of course possible to have a wide variety of applications and modified designs, such as a cylinder or a cylinder with a part cut off, or to manufacture it in a shape that wraps around the vertical member (100) by bending a flat plate to correspond to the H-shaped cross-section of the vertical member (100).

[0101] Meanwhile, the present invention can be constructed in various ways, such as by placing a reinforcing assembly (10) equipped with a retaining wall (250) as in Fig. 1 into an installation space (500), reinforcing it with a tie beam (260) crossing the vertical member (100) as in Fig. 2 (a) and (b), or reinforcing the vertical member (100) by a retaining wall (510) formed by curing soil cement as in Fig. 2 (c) and (d).

[0103] In addition, the reinforcing assembly (10) according to the present invention may be constructed in the manner shown in FIGS. 11 to 13.

[0104] First, the worker drills the construction target surface (400) and inserts a front earth retaining H-pile (102) as shown in Fig. 11, and while excavating and drilling the construction target surface (400), injects cement to mix the soil and cement generated from the ground to form a paste-like soil cement, and then places the reinforcement assembly (10) before the soil cement curing as shown in Fig. 12.

[0105] Afterwards, the worker completes the construction of the reinforcement assembly (10) by installing an upper transverse reinforcement member (700) on the upper side of the reinforcement assembly (10) exposed from the construction target surface (400) as shown in Fig. 13.

[0107] Meanwhile, the reinforcing assembly (10) according to the present invention may be constructed in the manner shown in FIGS. 14 to 16.

[0108] First, the worker drills the construction target surface (400) and injects cement to mix the soil and cement generated from the ground to form a paste-like soil cement, and then places the reinforcement assembly (10) before the soil cement curing as shown in Fig. 14.

[0109] Afterwards, the worker installs an upper transverse reinforcing member (700) on the upper side of the reinforcing assembly (10) exposed from the construction target surface (400) as in FIG. 15, and performs excavation with the earth retaining wall (250) installed as in FIG. 16.

[0111] Meanwhile, as shown in FIGS. 17 to 21, the present invention may further include a horizontal reinforcing member (270) that is welded and fixed to the outer surface of the coupling (300) in a direction crossing the vertical main member (100).

[0112] That is, the horizontal reinforcing member (270) can be welded and fixed to the outer surface of the coupling (300) through which the vertical main member (100) having an H-shaped cross section as shown in FIG. 17 passes, and can be arranged in a direction that crosses the vertical main member (100).

[0113] In addition, the present invention may additionally install a reinforcing pipe (103) between the outer surface of a vertical member (100) having an H-shaped cross-section as in FIG. 18 and the inner surface of a coupling (300) having a "□"-shaped cross-section, thereby allowing additional drilling to be performed through the reinforcing pipe (103) as in FIG. 19, or additionally installing an anchor (104) or reinforcing material (105) through the reinforcing pipe (103) as in FIG. 20.

[0114] In addition, it is obvious that each of the horizontal reinforcing members (270) may be provided with a structure in which one end or both ends are connected and fixed by a connecting rod (272) as shown in FIG. 21.

[0116] As described above, the basic technical concept of the present invention is to provide an earth retaining reinforcement assembly with a reinforced pile embedment and an earth retaining method using the same, wherein reinforcing forces in the transverse and diagonal directions are added to the embedment of a longitudinal pile driven into the ground by forming a front row and a rear row, and the longitudinal pile and the coupling are integrated with soil cement to generate reinforcing forces between the longitudinal pile and the transverse and diagonal reinforcing members, thereby increasing the stiffness and frictional resistance of the embedded pile member and increasing the stability of the earth retaining structure.

[0117] Furthermore, within the scope of the basic technical concept of the present invention, it is of course possible for a person with ordinary knowledge in the relevant industry to prevent the reinforcing assembly (10) including the longitudinal reinforcing member (100) from shaking or deviating from its initial installation position by making a spacer in the shape of a disc or flat plate to fit the diameter or width of the aforementioned hole wall and fitting it to the coupling (300) in order to prevent the reinforcing assembly (10) from shaking or deviating from its initial installation position by excavating the underground wall (hereinafter not shown) before inserting the reinforcing assembly (10) and fitting it, or to install one of the longitudinal reinforcing members (100) of the multiple rows of longitudinal reinforcing members (100) by connecting it at an angle with a cross member (200). Explanation of the symbols

[0119] 10...Reinforcement assembly 100...vertical main component 101...Tofu 102...Front earth retaining H-piles 103...Reinforcement pipe 200...intersecting member 210...Hinge molding 220...horizontal member 230...Inclined member 240...Molding support piece 241, 242... Support adjustment piece 250... earth retaining wall 260...sash 270...horizontal reinforcement 272...connecting bar 300...coupling 302...Beam fixing clamp 310...Spacer 320...Coupling reinforcement part 400...Construction target surface 500...installation space 510... Earth retaining wall 600...fixed pole 700...Upper transverse reinforcement 750...Upper connecting reinforcement 810...connecting contact piece 820... Auxiliary fixed pole 900...underground structure S1...Stage 1 S2...Stage 2

Claims

Claim 1 A first step of excavating and drilling the construction surface while injecting cement to mix the soil generated from the ground with the cement to form a paste-like soil cement; The method comprises a second step of placing a reinforcing assembly, which includes a plurality of vertical main members arranged vertically on the construction target surface and a plurality of intersecting members that cross or intersect the plurality of vertical main members, in an installation space before the soil cement is cured, wherein the intersecting members include a plurality of hinge moldings rotatably coupled to couplings coupled to each of the plurality of vertical main members arranged in two rows, a horizontal member arranged in a direction crossing the plurality of vertical main members arranged in two rows having an end coupled to each of the plurality of hinge moldings, a pair of inclined members arranged obliquely to the plurality of vertical main members arranged in two rows having an end coupled to each of the plurality of hinge moldings and intersecting each other, a molding support piece protruding from each of the mutually facing outer surfaces of the couplings and supporting the plurality of hinge moldings, and the molding support piece is installed according to the distance between the outer surface of the coupling and the outer surface of another coupling facing the coupling, and the A reinforcing assembly is fabricated by including support adjustment pieces having different thicknesses, lengths, and areas to enable the connection of hinge moldings, and by penetrating and connecting the longitudinal members to a coupling to which the ends of each of the plurality of cross members are connected before the reinforcing assembly is seated in the installation space; after the reinforcing assembly is seated in the installation space, the head of the longitudinal member and the earth retaining wall are connected to an upper transverse reinforcing member and a tie beam, respectively; and after the second step, when the soil cement filled between the coupling and the plurality of longitudinal members and the installation space is cured, each of the plurality of longitudinal members is withdrawn from the installation space from the coupling, and an additional operation is performed to place the earth retaining wall between one of the plurality of longitudinal members and an adjacent longitudinal member.The method further includes the process of welding and fixing the tie beam, which supports the earth retaining wall and is arranged to cross the longitudinal member, to the coupling provided at the uppermost of the plurality of couplings; and further includes the process of welding fixing rods, which are arranged in the direction in which the longitudinal member rests on the soil cement or in the direction crossing the longitudinal member, to the plurality of couplings arranged along the upper and lower directions of each longitudinal member; and additionally adding a plurality of gap materials to secure a space between the outer surface or edge of the longitudinal member formed in a beam shape and the inner surface of the coupling so that soil cement can be filled; and adding a coupling reinforcement member between the inner surface of the coupling and the outer surface or edge of the longitudinal member to maintain durability against twisting, pressure, and shear loads resulting from the inflow and curing of the soil cement and the intersecting members connected to the coupling, wherein the gap materials and the coupling reinforcement member are fixed only to the inner surface of the coupling and are not fixed to the longitudinal member. ...is not provided for shape maintenance so that the coupling does not detach from the vertical members and is embedded in the installation space while maintaining the overall structure of the reinforcement assembly, so that the vertical members can be separated from the installation space and recycled after the soil cement has cured and the reinforcement assembly is installed in the installation space by maintaining the connection state of the fixing rod with the coupling. When the soil cement has cured and an earth retaining cutoff wall is formed in the installation space and the installation of the underground structure is completed after the earth retaining excavation, the tack welded part is removed, and the fixing rod and the vertical members are clamped using heavy equipment and pulled out from the installation space. Since the vertical members are not fixed in a connected state to the coupling but are fixed by the soil cement that has seeped between the inner surface of the coupling and the outer surface of the vertical members,A retaining wall construction method using a retaining wall reinforcement assembly with a pile embedment reinforced by the lifting power of the heavy equipment, characterized in that it can be pulled up and separated from the installation space. Claim 2 delete Claim 3 delete Claim 4 A plurality of vertical main members erected on a construction target surface; a plurality of couplings arranged along the upper and lower directions of each of the plurality of vertical main members; a plurality of hinge moldings rotatably coupled to the couplings coupled to each of the plurality of vertical main members erected in two rows; a horizontal member arranged in a direction traversing the plurality of vertical main members erected in two rows, having an end coupled to each of the plurality of hinge moldings; a pair of inclined members arranged obliquely to the plurality of vertical main members erected in two rows, having an end coupled to each of the plurality of hinge moldings, and intersecting each other; molding support pieces protruding from the mutually opposing outer surfaces of the couplings to support the plurality of hinge moldings; and a plurality of support adjustment pieces having different thicknesses, lengths, and areas to enable the installation of the molding support pieces and the fastening of the hinge moldings according to the distance between the outer surface of the coupling and the outer surface of another coupling facing the coupling. A retaining wall that is coupled to the plurality of longitudinal members and regulates the inflow of soil from the unexcavated ground of the construction target surface into the installation space; and a fixing rod that is fixedly disposed in a plurality of couplings that penetrate along the upper and lower directions of each of the longitudinal members, in a direction in which the longitudinal member rests on the soil cement or in a direction that crosses the longitudinal member, and the reinforcing assembly is formed by including the plurality of longitudinal members, the couplings, the plurality of intersecting members, and the retaining wall, thereby reinforcing the pile embedment portion. Claim 5 delete

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