Support pile having fixing coupling plate of multifunctional wale bracket and retaining wall construction method using same

Abstract

The present invention provides a support pile having a fixing coupling plate and a retaining wall construction method using same, wherein the support pile improves upon an existing beam hanging method for supporting a wale in which the wale is processed on site and fixed by welding, thus making it possible to safely secure sufficient force for fixing a multifunctional wale bracket in a manner that is safer, more economical, and minimizes risks associated with working conditions, and achieve cost-effectiveness in various modes of retaining wall construction by recycling the multifunctional wale bracket. The support pile according to a preferred embodiment of the present invention is a support pile used in retaining wall construction, wherein a fixing coupling plate for installing a wale bracket and reinforcing the pile is installed in the longitudinal direction in a certain section of the support pile, and thus the wale bracket for supporting the wale and the fixing coupling plate can be fastened to each other by jointing or press-fitting.

Description

Support pile having a fixing plate for a multi-functional belt bracket and a method for constructing a retaining wall using the same

[0001] The present invention relates to a support pile used in an earth retaining wall, and more particularly, to a support pile having a fixing plate capable of reinforcing the bending rigidity and strength of the pile, and a method of constructing an earth retaining wall using the same, which is safer and more economical than the existing on-site processing and welding method of fixing a belt, and which minimizes the risk of work conditions, thereby safely securing the fixing strength of a multifunctional belt bracket, and which enables economical construction of earth retaining walls using various methods by reusing the multifunctional belt bracket.

[0002] Typically, temporary retaining walls are constructed using cast-in-place concrete piles (CIP). This involves drilling holes with a specified diameter using a casing. H-shaped steel piles (support piles) and rebar mesh are inserted into the holes, and concrete is poured on-site to form the temporary retaining wall. This method requires significant on-site work, increases the risk of construction defects due to working conditions, and can lead to quality issues, such as concrete leakage that hinders the proper formation of the retaining wall.

[0003] In contrast, the PHC pile method installs factory-made concrete piles (PHC piles) to construct a retaining wall, which has the advantage of significantly reducing the amount of on-site work, shortening the construction period, and eliminating concerns about quality issues.

[0004] However, when constructing a retaining wall using PHC piles, it is not easy to install the belt brackets that support the belts. Therefore, conventionally, insert members are installed in the pile body and used to attach the belt brackets to support the belts. In this case, the weight of the belt is concentrated on the insert members, which inevitably leads to poor installation stability, and it is also difficult to increase the flexural rigidity of the PHC piles. Therefore, a technology is needed that can increase the flexural rigidity of PHC piles and improve the installation stability of the belt brackets to increase the earth pressure resistance of the retaining wall.

[0005] Meanwhile, when H-shaped steel piles are used as support piles during the construction of retaining walls, the belt brackets are installed by welding to the H-shaped steel piles. In this case, the belt brackets cannot be disassembled after the retaining wall construction, making them difficult to recycle. Furthermore, when the belt brackets are bolted to the H-shaped steel piles, the shear force applied to the bolts due to the supporting load of the belt is reduced, which has the disadvantage of reducing the installation safety. Therefore, the belt brackets should be designed to be detachable to enable reuse, and technical measures are needed to reduce the shear force applied to the fastening bolts that secure the belt brackets.

[0006] The background technology of the present invention is Korean Patent No. 10-2264594, which proposes a "PHC pile for earth retaining walls." This comprises multiple PHC piles with insert panel members and insert reinforcing members installed. However, the insert panel members are installed intermittently, making it difficult to demonstrate flexural rigidity. In addition, the supporting load of the belt generates shear force in the fastening member, which reduces the stability of the belt.

[0007] Another technology underlying the present invention is Korean Patent No. 10-1927804 (Patent Document 2), which proposes a "Soil Retaining Wall Using PHC Piles." This technology allows a belt module to be attached or detached to a PHC pile as a fastening member. However, this background technology lacks a means for increasing the flexural rigidity of the PHC pile, and has the disadvantage of reduced belt stability due to the support load of the belt generating a shear force on the fastening member.

[0008] Another technology that serves as the background for the present invention is Korean Patent Registration No. 10-2248682 (Patent Document 3), which proposes a "reusable belt support bracket." This is configured such that upper and lower hinge joints are welded to support piles, and then the upper arm and arm support are detachably bolted to the upper and lower hinge joints, so that they can be removed and reused when the retaining wall is dismantled. However, the background technology described above has a problem in that the support load of the belt generates a shear force on the bolts, reducing the installation safety of the belt support bracket.

[0009] The present invention improves the existing on-site processing and welding method of supporting a belt, thereby safely securing the fixing force of a multifunctional belt bracket supporting a belt, and in particular, improves various high-risk working conditions that are exposed to unprotected situations at work sites during abnormal weather conditions in winter or summer, and simplifies the work process, and enables safer and easier installation of the belt bracket from noise during on-site processing and harmful gases generated during welding, and reduces environmental pollution caused by electric shock accidents and harmful gases generated during welding, and reinforces the flexural rigidity and strength of piles, and ensures safety and economy in the construction of earth retaining walls using various methods by recycling the multifunctional belt bracket.

[0010] According to the present invention, a belt bracket is installed in a longitudinal direction at a certain section of a support pile and a fixing connecting plate for pile reinforcement is installed, so that the belt bracket supporting the belt and the fixing connecting plate can be fastened to each other by joining or fitting.

[0011] The above-mentioned support pile is an H-shaped steel pile, and a gear or saw-tooth type fixing joint plate is integrally attached to the front flange of the H-shaped steel pile, or a fixing joint plate having a fitting joint structure with a male or female joint is integrally attached to the front and rear flanges, and round or long perforated holes can be installed at regular intervals on both sides of the fixing joint plate centered on the front or front and rear of the flange.

[0012] The above-mentioned support pile is a PHC pile comprising a hollow pile body made of high-strength concrete, spiral steel wires embedded in the concrete within the pile body, and PC steel bars arranged in a circle in contact with the spiral steel wires and embedded in the concrete of the pile body to introduce compressive stress into the concrete, and the above-mentioned fixing joint plate may be installed such that one side of the pile body is exposed by being arranged in a direction perpendicular to the main axis of the soil retaining wall.

[0013] In the above support pile, pile reinforcement bars made of pairs of triangularly processed steel bars arranged in an offset manner and connected to each other can be additionally installed at regular intervals along the length direction.

[0014] Meanwhile, the above-mentioned fixed joint plate may have a T-shaped cross-section and a joint or insertion joint structure with a protruding or steel plate.

[0015] In addition, the above-mentioned fixing joint plate may have a reinforcing channel groove formed in one or two rows in the longitudinal direction of the pile body.

[0016] The above reinforcing channel groove may further form a bolt head catch to prevent detachment by inserting the bolt head of a high-strength bolt.

[0017] A tooth-shaped joint can be formed in the above reinforcing channel groove.

[0018] The above-mentioned fixing joint plate may be provided with a fitting ring for fitting with a multi-functional belt bracket.

[0019] The above-mentioned fixed joint plate may further include a multi-functional belt bracket that is detachably installed to support the belt.

[0020] An intermediate joint plate is bonded to the above-mentioned fixed joint plate and a multi-functional belt bracket is bonded to the intermediate joint plate and detachably fastened with a high-tension bolt. However, when the multi-functional belt bracket and the intermediate joint plate are bonded to each other, the load of the belt is distributed to the fixed joint plate without going through the high-tension bolt, so that assembly can be accomplished through a fitting connection between the protruding key and the keyhole.

[0021] The above protruding key or keyhole may have a trapezoidal shape.

[0022] Meanwhile, the multi-functional belt bracket comprises a detachable coupling plate having a male or female coupling portion on the back surface or both sides of the back surface, a lower hinge block rotatably hinged to the lower front surface of the detachable coupling plate, an upper hinge block rotatably hinged to the upper front surface of the detachable coupling plate, a belt support upper and lower adjustment screw that is freely installed on the upper hinge block and has an operating handle connected to the lower side, a belt support upper and lower slider that is screwed to the belt support upper and lower adjustment screw and is installed on the upper hinge block so as to be able to move up and down, a belt support whose one end is supported on the upper end of the belt support upper and lower slider, an upper hinge bolt hinged to the front end of the belt support, a lower hinge bolt whose one end is hinged to the lower hinge block, and one end screwed to the upper hinge bolt and the other end screwed to the lower hinge block. Including an inclination adjustment member that is screwed to a bolt and adjusts the support angle of the belt support member according to the rotation operation direction; the belt support member can rotate left and right around the hinge axis of the lower hinge block and the upper hinge block, and the inclination and height of the belt support member can be adjusted according to the rotation operation direction of the inclination adjustment member and the belt support upper and lower adjustment screw.

[0023] In addition, the multi-functional belt bracket may include a detachable coupling plate having a male coupling portion or a female coupling portion on a rear surface or both sides of the rear surface, a bracket support installed on the front of the detachable coupling plate, a plurality of sliding links connected to the upper end of the bracket support in a hinged and linearly movable manner and simultaneously connected in an X shape through a mutual hinge connection, a pair of rotational support shafts connected to the hinge portions of the sliding links, an adjusting screw shaft screw-connected to one side of the rotational support shaft and freely inserted into the other side of the rotational support shaft, a height-adjusting handle connected to one end of the adjusting screw shaft and used for rotational operation, and a belt support that is hingedly and linearly movably connected to the upper end of the sliding link and whose height is adjusted according to the rotational operation direction of the height-adjusting handle.

[0024] In addition, the multi-functional belt bracket may include a detachable connecting plate having a male or female connecting portion on the back surface or both sides of the back surface, an upper hinge bolt hingedly connected to the front end of the belt support, a lower hinge bolt having one end hingedly connected to the front lower portion of the detachable connecting plate, and an inclination adjusting member having one end screwed to the upper hinge bolt and the other end screwed to the lower hinge bolt to adjust the support angle of the belt support according to the rotational operation direction.

[0025] In addition, the multi-functional belt bracket may include a detachable connecting plate having a male or female connecting portion on the back surface or both sides of the back surface, a bracket support having one end hingedly connected to the lower front surface of the detachable connecting plate and the other end hingedly connected to the upper front surface of the detachable connecting plate and capable of rotating left and right, and a belt support integrated into the upper surface of the bracket support.

[0026] In addition, the multi-functional belt bracket may be provided with a detachable connecting plate having a hook portion for hanging on the back surface, and the fixing connecting plate may have hook portion hanging holes arranged in a double row so that the hook portion for hanging can be inserted and fixed.

[0027] In addition, so that the load applied to the multifunctional belt bracket is not transferred as a shear force to the fastening means that fixes and separates the multifunctional belt bracket to the fixing joint plate, the multifunctional belt bracket and the fixing joint plate can be fitted or interlocked through a male joint and a female joint.

[0028] In addition, the male or female joint may be formed as a wave-shaped, triangular, square, trapezoidal, or sawtooth-shaped joint projection on both sides or the back of the multi-functional belt bracket-side detachable joint plate, or may be formed as a joint groove having a shape or form identical to that of the joint projection and fitted into the front walls facing each other of the channel grooves formed on both sides or the front of the belt bracket fixing joint plate.

[0029] In order to prevent workers from falling while working on various support materials installed in the excavation after the construction of the earth retaining wall, a foldable safety hook bracket is further installed on the above-mentioned fixed joint plate for hanging a safety belt. The foldable safety hook bracket may include a safety hook support plate attached to an intermediate joint plate additionally welded to the above-mentioned fixed joint plate, and one or more safety hooks hingedly connected to the safety hook support plate.

[0030] The construction of a retaining wall according to one embodiment of the present invention is characterized by including the steps of: drilling a hole at a planned location in the ground, driving an H-shaped steel pile support pile manufactured by integrating a fixing joint plate into the drilled hole, and then excavating to a predetermined depth along the planned excavation area; the step of repeatedly installing the retaining plate between adjacent H-shaped steel pile support piles; the step of assembling a multi-functional belt bracket to the fixing joint plate through a fitting connection between a male joint and a female joint, and then fixing the multi-functional belt bracket to the fixing joint plate by fastening a fastening means; and the step of fixing the belt to the multi-functional belt bracket.

[0031] According to another embodiment of the present invention, the construction of a retaining wall is characterized by including the steps of: installing H-shaped steel pile support piles and a reinforcing mesh manufactured by integrating a fixing joint plate after drilling a hole at a planned location in the ground; forming a retaining wall by repeatedly pouring concrete or mortar around the H-shaped steel pile support piles and the reinforcing mesh through the drilled hole; excavating to a predetermined depth along a planned excavation area on the front of the retaining wall; assembling a multi-functional belt bracket to a fixing joint plate installed on the H-shaped steel pile support pile through a fitting joint between a male joint and a female joint, and then fixing the multi-functional belt bracket to the fixing joint plate by fastening a fastening means; and installing a support member by supporting the belt to the multi-functional belt bracket.

[0032] According to another embodiment of the present invention, the construction of a retaining wall is characterized by including the steps of forming a soil concrete water-retaining wall by excavating and injecting and stirring cement milk using a drilling device at a planned location of the ground, the step of forming the retaining wall by inserting H-shaped steel pile support piles manufactured by integrating a fixing bonding plate at each set location, the step of performing excavation to a predetermined depth along a planned excavation area on the front of the retaining wall, the step of assembling a multi-functional belt bracket to a fixing bonding plate installed on the H-shaped steel pile support pile through a fitting connection between a male joint and a female joint, and then fixing the multi-functional belt bracket to the fixing bonding plate by fastening a fastening means, and the step of installing a support member by supporting the belt to the multi-functional belt bracket.

[0033] According to another embodiment of the present invention, the construction of a retaining wall is characterized by including: (a) a step of constructing a retaining wall by repeatedly inserting a PHC pile support pile having a fixed joint plate integrally formed therewith into the drilled hole after drilling at a planned location in the ground, and a step of constructing a retaining wall, (b) a step of assembling a multi-functional belt bracket into the fixed joint plate of the PHC pile support pile as an integral part through a fitting connection between a male joint and a female joint, and then fixing the multi-functional belt bracket to the fixed joint plate by fastening a fastening means, and (c) a step of installing a support member by supporting the belt to the multi-functional belt bracket.

[0034] The construction of a retaining wall according to another embodiment of the present invention is characterized by including: (a) a step of constructing a retaining wall by repeatedly inserting a PHC pile support pile having a fixing bonding plate integrated therein after drilling at a planned location in the ground and the PHC pile into the drilled hole, (b) a step of fixing a multifunctional belt bracket by joining or fitting it to the fixing bonding plate of the PHC pile support pile, and (c) a step of installing a support member by supporting the belt to the multifunctional belt bracket.

[0035] According to the present invention, the flexural rigidity of the supporting pile is improved by the fixing bonding plate, and as a result, the earth pressure resistance of the earth retaining wall is increased, thereby improving the construction stability without the risk of collapse.

[0036] In addition, the multi-functional belt bracket and bracket fixing plate are assembled by the combination of the protruding key and the keyhole, thereby distributing the belt support load to the bracket fixing plate rather than the high-strength bolt, thereby improving the mounting stability of the belt.

[0037] In addition, when the belt bracket of the earth retaining wall is dismantled, the fastening means can be loosened and the multi-functional belt bracket can be removed, making it economical to reuse it for various earth retaining wall constructions.

[0038] In addition, a multifunctional belt bracket is installed as a fastening means on a fixed connection plate that is fastened and attached to a support pile, and is assembled through a fitting connection between a male and female connection part, so that the multifunctional belt bracket is easy to install, and the structure in which the support load of the belt is distributed to the fixed connection plate through the male and female connection parts reduces the shear force acting on the fastening means, such as a rivet bolt or a fastening bolt, so that the installation safety of the multifunctional belt bracket can be improved.

[0039] In addition, the multi-functional belt bracket can be assembled through interlocking or insertion and bolt fastening, which can improve the high-risk working conditions and simplify the work process, especially in winter or summer when exposed to abnormal weather conditions without protection, and it can be installed more safely and easily from noise and harmful gases generated during welding through on-site processing, and it can prevent electric shock accidents that may occur during welding and reduce environmental pollution caused by harmful gases, so it has the advantage of enabling safer and more environmentally friendly construction of earth retaining walls.

[0040] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical idea of ​​the present invention, and therefore, the present invention should not be interpreted as being limited to the matters described in the attached drawings.

[0041] FIG. 1a is a perspective view of a PHC pile support pile having a fixing bonding plate according to one embodiment of the present invention.

[0042] Figure 1b is a perspective view showing a state in which a spiral wire and a PC steel bar are installed on the support pile of Figure 1a.

[0043] Figure 1c is a plan view of the PHC pile support pile of Figure 1a with a pile reinforcement additionally installed.

[0044] FIG. 1d, FIG. 1e and FIG. 1f are exemplary views showing various types of fixing plates installed on a PHC pile support pile having a fixing plate according to an embodiment of the present invention.

[0045] Figure 2 is a plan view of the main body of Figure 1a.

[0046] Fig. 3 is a deformed state diagram of the fixed joint plate illustrated in Fig. 2.

[0047] Figures 4a and 4b are examples of a single row of reinforcing channel grooves formed in the fixed joint plate illustrated in Figure 2.

[0048] Figure 5a is a perspective view of a multi-functional belt bracket installed on a PHC pile support pile of the present invention.

[0049] Figure 5b is an exploded perspective view of the multi-functional belt bracket and bracket fixing plate shown in Figure 5a.

[0050] Fig. 6 is a perspective view of a foldable safety hook bracket installed on the PHC pile support pile of Fig. 1a.

[0051] Figure 7 is an enlarged view of the 'K' portion of Figure 6.

[0052] Figure 8 is a plan view and an enlarged view as seen from above in Figure 6.

[0053] Figure 9 is an exploded perspective view of the folding safety ring bracket and bracket fixing plate shown in Figure 7.

[0054] Fig. 10 is a perspective view showing another form of a foldable safety ring bracket applied to the present invention.

[0055] Figure 11 is a diagram showing a state in which a PHC pile support pile is installed with a fixed joint plate according to another embodiment of the present invention.

[0056] Figure 12 is an enlarged view of the multi-functional belt bracket and fixing joint plate shown in Figure 11.

[0057] Figure 13 is a cross-sectional view of the multi-functional belt bracket and the fixing joint plate shown in Figure 12.

[0058] Figure 14 is an exploded perspective view of the multi-functional belt bracket and fixing joint plate illustrated in Figure 12.

[0059] Fig. 15 is a modified perspective view of the multi-functional belt bracket illustrated in Fig. 14.

[0060] Fig. 16 is another modified perspective view of the multi-functional belt bracket illustrated in Fig. 14.

[0061] Figure 17 is another modified exploded perspective view of a multi-functional belt bracket and PHC pile support pile according to an embodiment of the present invention.

[0062] Figure 18 is another modified example of a multi-functional belt bracket according to an embodiment of the present invention.

[0063] Fig. 19 is a front view of Fig. 18.

[0064] Figures 20 and 21 are further modified examples of a multi-functional belt bracket according to an embodiment of the present invention.

[0065] Figures 22 and 23 are exemplary views showing a multi-functional belt bracket installed on various H-shaped steel pile support piles according to an embodiment of the present invention.

[0066] Figures 24 to 26 are exemplary views showing various combination structures of a fixed combination plate and a detachable combination plate applied to the present invention.

[0067] Figures 27 and 28 are exemplary drawings showing various shapes of H-shaped steel piles applied to the present invention.

[0068] Figures 29 to 32 illustrate an earth retaining method using a support pile of the present invention.

[0069] Figure 29 is a construction sequence diagram of a retaining wall according to the soil retaining wall method.

[0070] Figure 30 is a construction sequence diagram of a soil retaining wall according to the CIP method.

[0071] Figure 31 is a construction sequence diagram of a soil retaining wall according to the SCW method.

[0072] Figure 32 is a construction sequence diagram of a soil retaining wall using the PHC pile support pile of the present invention and a general PHC pile together.

[0073] Below, the present invention is described in detail with reference to embodiments presented in the attached drawings, but the presented embodiments are exemplary for a clear understanding of the present invention and the present invention is not limited thereto.

[0074] The support pile (10) according to the present invention is used as a general term for PHC piles or H piles and is used in constructing a soil retaining wall (200). Therefore, the support pile (10) can be manufactured in either the form of a PHC pile or an H pile.

[0075] As shown in FIGS. 1a to 5, the support pile (10) includes a fixing connecting plate (20) installed longitudinally at a certain section, a multifunctional belt bracket (30) that is detachably installed on the fixing connecting plate (20) to support a belt (60), and a fastening means (40) that fixes and detaches the multifunctional belt bracket (30) to and from the fixing connecting plate (20).

[0076] At this time, when the support pile (10) is manufactured in the form of a PHC pile, it includes a hollow pile body (12) made of high-strength concrete, spiral wires (14) embedded in the concrete within the pile body (12), and PC steel bars (16) arranged in a circle in contact with the spiral wires (14) and embedded in the concrete of the pile body (12) to introduce compressive stress into the concrete. The fixing bonding plate (20) is installed in various forms on the outer surface of the pile body (12) as shown in FIGS. 1d, 1e, 1f, and 11. Here, FIG. 1d shows that the fixing connecting plate (20) is installed with a T-shaped cross-section, FIG. 1e shows that the fixing connecting plate (20) is installed in a T-shaped groove formed on the outer surface of the pile body (12), and a fitting ring (206) is installed on the fixing connecting plate (20), and FIG. 1f shows that the fixing connecting plate (20) is installed in a protruding form on the outer surface of the pile body (12).

[0077] The fixing joint plate (20) may have a reinforcing channel groove (202) formed in one or two rows in the longitudinal direction of the pile body (12) as shown in FIGS. 2 to 4. The fixing joint plate (20) may be made of steel, for example. Preferably, the reinforcing channel groove (202) may be configured in a T-shape as illustrated. In this case, the reinforcing channel groove (202) may have a bolt head of a high-tension bolt, which is a fastening means (40), inserted into the T-shape to suppress rotation of the high-tension bolt when fastened with a nut. The reinforcing channel groove (202) may further have a bolt head catch (202a) formed into which the bolt head of the high-tension bolt (40) is inserted to suppress detachment as shown in FIGS. 3 and 4b.

[0078] Meanwhile, as shown in FIGS. 5a and 5b, an intermediate joining plate (32) is bonded to the fixed joining plate (20) by welding, and a multi-functional belt bracket (30) is bonded to the intermediate joining plate (32) and fastened with a high-tension bolt (40) to be detachably installed. A multi-functional belt bracket (30) of one type includes a belt bracket substrate (301) and a belt support (312) protruding from the front of the belt bracket substrate (301).

[0079] Preferably, when the multi-functional belt bracket (30) and the intermediate connecting plate (32) are bonded together, the load of the belt (60) may be distributed to the fixing connecting plate (20) without using a high-tension bolt (40), so that assembly can be achieved through a fitting connection between the protruding key (301a) and the keyhole (32a). Here, the protruding key (301a) is formed on the belt bracket substrate (301), and the keyhole (32a) is formed on the intermediate connecting plate (32), but they may be formed opposite to each other.

[0080] The illustrated protruding key (301a) or keyhole (32a) has a trapezoidal shape and is mutually fitted, but the present invention is not limited to the combination of the illustrated shapes.

[0081] The multi-functional belt bracket (30) configured in this manner is installed on various support piles (10) used in the construction of the earth retaining wall (200) as shown in FIGS. 29 to 32 to support the belt (60). Of course, the multi-functional belt bracket (30) is detachable from the intermediate connecting plate (32) welded to the fixing connecting plate (20), and is thus recyclable, thereby providing economical efficiency.

[0082] Meanwhile, as shown in FIGS. 6 to 10, a folding safety hook bracket (70) may be additionally installed on the fixing joint plate (20) for use as a safety harness to prevent workers from falling while working on various support materials installed on the excavation site after construction of the retaining wall (200).

[0083] As shown in FIGS. 7 to 10, the foldable safety hook bracket (70) includes a safety hook support plate (702) attached to an intermediate joint plate (32) welded to a fixing joint plate (20), and one or more safety hooks (704) hingedly connected to the safety hook support plate (72). A buckle (not shown) connected to a rope of a safety harness worn by a worker is connected to the safety hook (704).

[0084] Here, the safety ring (704) may be installed by being hinged on two axes as shown in FIG. 7, or by being hinged on one axis as shown in FIG. 10. Of course, it may also be assembled between the foldable safety ring bracket (70) and the intermediate connecting plate (32) by a fitting connection between the protruding key (702a) and the keyhole (32a) as shown in FIG. 9. By doing so, even if the worker's load is applied to the foldable safety ring bracket (70), it does not act as a shear force on the high-tensile bolt (40) as shown in FIGS. 7 and 8, but is distributed to the intermediate connecting plate (32) and then transmitted to the pile body (12) via the fixing connecting plate (20), thereby improving the installation safety of the foldable safety ring bracket (70).

[0085] Meanwhile, the construction method of the retaining wall using the PHC pile type among the support piles (10) of the present embodiment can be constructed by repeatedly inserting the PHC pile support pile (10) having the fixing joint plate (20) integrated therein and the general PHC pile (10a) into the drilled hole (5) after drilling an auger or casing at a planned location in the ground as shown in FIG. 32, constructing the retaining wall (200), attaching the intermediate joint plate (32) to the fixing joint plate (20) of the PHC pile (10), and then welding them together, and attaching the multi-functional belt bracket (30) to the intermediate joint plate (32) through a fitting connection between the protruding key (301a) and the key hole (32a), and then detachably fixing the multi-functional belt bracket (30) to the intermediate joint plate (32) with a high-tension bolt (40).

[0086] Here, as shown in FIGS. 11 to 14, the multifunctional belt bracket (30) and the fixing connecting plate (20) may have a structure in which they are fitted together through a male connecting portion (303) and a female connecting portion (203). Accordingly, the working load received by the multifunctional belt bracket (30) is distributed to the fixing connecting plate (20) through the male connecting portion (303) and the female connecting portion (203), thereby preventing the shear force from being transferred to the fastening means (40). This improves the installation safety of the multifunctional belt bracket (30) and increases the support capacity of the belt (60).

[0087] In addition, the multi-functional belt bracket (30) can be flexibly installed at a desired location of the support pile (10) without any location restrictions.

[0088] Here, the fastening means (40) may be, for example, a rivet bolt or a fastening bolt (high-tension bolt). In one form, the fastening means (40) may be screw-fastened to a fixing connecting plate (20) after penetrating the multifunctional belt bracket (30) to fix the multifunctional belt bracket (30). In another form, as shown in FIG. 12, the fastening means (40) may be inserted into the back surface of the fixing connecting plate (20) to fix the multifunctional belt bracket (30) by a fixing nut (42) fastened to a screw portion penetrating the multifunctional belt bracket (30).

[0089] Meanwhile, as shown in FIGS. 11 to 14 and 19, the multifunctional belt bracket (30) comprises a detachable connecting plate (302) having a male or female connecting portion (303) on the back or both sides of the back, a lower hinge block (304) rotatably hinged to the lower front of the detachable connecting plate (302), an upper hinge block (306) rotatably hinged to the upper front of the detachable connecting plate (302), a belt support upper and lower adjustment screw (308) that is freely installed on the upper hinge block (306) and has an operating handle (309) connected to the lower end, a belt support upper and lower slider (310) that is screwed to the belt support upper and lower adjustment screw (308) and installed on the upper hinge block (306) so as to be able to move up and down, and one end of the belt support It includes a belt support (312) supported on the top of an upper and lower slider (310), an upper hinge bolt (314) hingedly connected to the front end of the belt support (312), a lower hinge bolt (316) whose one end is hingedly connected to the lower hinge block (304), and an inclination adjustment member (318) whose one end is screwed to the upper hinge bolt (314) and the other end is screwed to the lower hinge bolt (316) to adjust the support angle (θ) of the belt support (312) according to the rotation operation direction.

[0090] Accordingly, the belt support (312) can rotate left and right around the hinge axis of the lower hinge block (304) and the upper hinge block (306). This allows the support position of the belt (60) to be easily changed.

[0091] In addition, when the operating handle (309) installed on the upper hinge block (306) is rotated, the belt support upper and lower adjustment screw (308) rotates, causing the upper and lower slider (310) to move up and down in accordance with the rotational operation direction of the operating handle (309). At this time, the inclination of the belt support (312) is adjusted with the upper hinge pin (313) of the upper hinge bolt (314) as the center. Thereafter, the belt support (312) can be raised or lowered depending on the rotational operation direction of the inclination adjustment stand (318). In this way, the belt support (312) can actively respond to the installation height and inclination of the belt (60) by adjusting the inclination and height of the belt support (312) depending on the rotational operation direction of the inclination adjustment stand (318) and the belt support upper and lower adjustment screw (308). As a result, stable support of the belt (60) is possible during the construction of the earth retaining wall. In addition, the angle of the belt support (312) can be easily adjusted in response to the installation angle of the belt (60), thereby eliminating the instability of the belt (60) mounted on the belt support (312).

[0092] Here, the structure may be represented by arranging coupling protrusions (303a) in the shape of a wave curve, triangle, square, trapezoid, sawtooth, or gear on the back surface or both sides of the back surface of the detachable coupling plate (302) having a male or female coupling portion (303). In addition, the female coupling portion (203) may be represented by arranging coupling grooves (202a) having the same shape as the coupling protrusions (303a) and fitted into the facing front walls of the channel groove (202) formed on the front surface of the fixed coupling plate (20). At this time, as shown in FIGS. 24 and 25, the male coupling portion (303) and the female coupling portion (203) may be formed in portions having a step difference from each other so as to be interlocked and coupled to each other.

[0093] Meanwhile, as shown in Fig. 17, a detachable connecting plate (302) may be installed on a fixing connecting plate (20) installed on a support stake (10) with a hook portion (302b) on the back surface. In this case, the fixing connecting plate (20) has hook portion hanging holes (204) arranged in a double row so that the hook portion (302b) can be inserted and fixed.

[0094] In addition, the fixing joint plate (20) can be manufactured in various shapes and fixedly attached to the flange of one side as shown in Figs. 27 and 28 when the support pile (10) is manufactured in the form of an H-pile, and installed. Of course, a multi-functional belt bracket (30) can also be installed by forming a female joint (203) arranged in the form of a hole in the front flange of the support pile (10) manufactured in the form of an H-pile as shown in (e) of Fig. 28.

[0095] A multi-functional belt bracket (30) of one type comprises a detachable connecting plate (302) having a male or female connecting portion (303) on the back or both sides of the back as shown in FIGS. 11 to 14 and FIG. 15, a lower hinge block (304) rotatably hinged to the lower front of the detachable connecting plate (302), an upper hinge block (306) rotatably hinged to the upper front of the detachable connecting plate (302), a belt support up / down adjustment screw (308) that is freely installed on the upper hinge block (306) and has an operating handle (309) connected to the lower end, a belt support up / down slider (310) that is screwed to the belt support up / down adjustment screw (308) and installed on the upper hinge block (306) so as to be able to move up / down, and one end of which is connected to the belt support It includes a belt support (312) supported on the top of an upper and lower slider (310), an upper hinge bolt (314) hingedly connected to the front end of the belt support (312), a lower hinge bolt (316) whose one end is hingedly connected to the lower hinge block (304), and an inclination adjustment member (318) whose one end is screwed to the upper hinge bolt (314) and the other end is screwed to the lower hinge bolt (316) to adjust the support angle (θ) of the belt support (312) according to the rotation operation direction.

[0096] Accordingly, the multi-functional belt bracket (30) can be freely installed at a desired height via a detachable connecting plate (302) to a PHC pile support pile (10) as shown in Fig. 11 or an H-shaped steel pile support pile (10) as shown in Figs. 22 and 23 via a fixing connecting plate (20).

[0097] In addition, the belt support (312) can rotate left and right around the hinge axis of the lower hinge block (304) and the upper hinge block (306). This allows the support point of the belt (60) to be easily changed.

[0098] In addition, when the operating handle (309) installed on the upper hinge block (306) is rotated, the belt support upper and lower adjustment screw (308) rotates, causing the upper and lower slider (310) to move up and down in accordance with the rotational operation direction of the operating handle (309). At this time, the inclination of the belt support (312) is adjusted with the upper hinge pin (313) of the upper hinge bolt (314) as the center. Thereafter, the belt support (312) can be raised or lowered depending on the rotational operation direction of the inclination adjustment stand (318). In this way, the belt support (312) can actively respond to the installation height and inclination of the belt (60) by adjusting the inclination and height of the belt support (312) depending on the rotational operation direction of the inclination adjustment stand (318) and the belt support upper and lower adjustment screw (308). As a result, stable support of the belt (60) is possible during the construction of the earth retaining wall. In addition, the support angle of the belt support (312) can be easily adjusted in response to the installation angle, thereby eliminating the instability of the belt (60) mounted on the belt support (312).

[0099] Another type of multi-functional belt bracket (30) may be configured with a detachable connecting plate (302) having a male connecting portion (303) or a female connecting portion (203) on the back surface or both sides of the back surface as shown in FIG. 16, an upper hinge bolt (314) hingedly connected to the front end of a belt support (312), a lower hinge bolt (316) having one end hingedly connected to the lower front side of the detachable connecting plate (302), and a tilt adjustment member (318) having one end screwed to the upper hinge bolt (314) and the other end screwed to the lower hinge bolt (316) to adjust the support angle (θ) of the belt support (312) depending on the rotational operation direction. In this case, the inclination of the belt support (312) can be adjusted according to the rotational operation direction of the incline adjustment stand (318) to actively respond to the installation position of the belt (60).

[0100] Here, as shown in Fig. 17, the detachable connecting plate (302) may be installed on a fixing connecting plate (20) installed on a support stake (10) with a hook portion (302b) on the back surface. At this time, the fixing connecting plate (20) has a hook portion hanging hole (204) arranged in a double row so that the hook portion (302b) can be inserted and fixed.

[0101] Another type of multi-functional belt bracket (30) comprises a detachable coupling plate (302) having a male coupling portion (303) or a female coupling portion (203) on the back surface or both sides of the back surface as shown in FIGS. 18 and 19, a bracket support member (330) installed on the front of the detachable coupling plate (302), a plurality of sliding links (332) connected to the upper end of the bracket support member (330) in a hinged and linearly movable manner and simultaneously connected in an X shape through mutual hinge coupling, a pair of rotation support shafts (334, 334) connected to the hinge portion of the sliding link (332), an adjusting screw shaft (336) screw-connected to one side of the rotation support shaft (334) and freely inserted into the other side of the rotation support shaft (334), and a height-adjusting screw shaft (336) coupled to one end of the adjusting screw shaft (336) and used for rotational operation. It includes a handle (338) and a belt support (312) that is hingedly and linearly movably connected to the top of the sliding link (332) and whose height is adjusted according to the rotational operation direction of the height-adjusting handle (338). Accordingly, the height of the belt support (312) is adjusted according to the rotational operation direction of the height-adjusting handle (338), so that it can actively respond to the installation height of the belt (60).

[0102] Another type of multi-functional belt bracket (30) may be configured to include a detachable connecting plate (302) having a male connecting portion (303) or a female connecting portion (203) on the back surface or both sides of the back surface as shown in FIG. 20 or FIG. 21, a bracket support member (330) having one end hinged or fixedly connected to the lower front surface of the detachable connecting plate (302) and the other end hinged or fixedly connected to the upper front surface of the detachable connecting plate (302) so as to rotate left and right, and a belt support member (312) integrated into the upper surface of the bracket support member (330). Therefore, even in the case of the multi-functional belt bracket (30) illustrated in FIG. 20 or FIG. 21, it has the advantage of being able to be installed at a desired height of the support pile (10) by providing the male connecting portion (303) on the detachable connecting plate (302).

[0103] Various construction methods of a retaining wall using a support pile (10) having a fixing joint plate (20) for installing a multi-functional belt bracket (30) configured in this manner are sequentially described below.

[0104] <When applying the earthenware method>

[0105] First, as shown in Fig. 29, an auger or casing is perforated at a planned location, and an H-shaped steel pile support pile (10) manufactured by integrating a fixing joint plate (20) is driven into the perforation hole (5), and then excavation is performed to a certain depth along the planned excavation area.

[0106] Next, the earthing plate (70) is repeatedly installed between adjacent H-shaped steel pile support piles (10 and 10), and the multi-functional belt bracket (30) is assembled to the exposed flange-side fixing joint plate (20) of the H-shaped steel pile support pile (10) through a fitting joint between the male joint (303) and the female joint (203), and then the multi-functional belt bracket (30) is fixed to the fixing joint plate (20) by fastening the fastening means (40), thereby installing the fitting-joint belt bracket assembly (100).

[0107] Next, the belt (60) is fixed to the multi-functional belt bracket (30) and the supporting material is installed.

[0108] In this way, the fixed joint plate (20), the multi-functional belt bracket (30), and the fastening means (40) are applied to the earth retaining wall method, so that the belt (60) can be safely supported. In addition, when the earth retaining wall is dismantled, the fastening means (40) can be loosened, and the multi-functional belt bracket (30) can be easily removed and recycled, thereby achieving economic efficiency.

[0109] <CIP 공법 적용시>

[0110] After performing auger or casing drilling at a planned location as shown in Fig. 30, an H-shaped steel pile support pile (10) and a reinforcing mesh (11) manufactured by integrating a fixing joint plate (20) are inserted into the drilled hole (5), and then concrete or mortar is poured around the H-shaped steel pile support pile (10) and reinforcing mesh (11) through the drilled hole (5) to form a retaining wall (200), and excavation is performed to a certain depth along the planned excavation area.

[0111] Next, the multifunctional belt bracket (30) is integrally assembled into the fixed joint plate (20) attached to the exposed flange of the H-shaped steel pile support pile (10) through a fitting connection between the male joint (303) and the female joint (203), and then the multifunctional belt bracket (30) is fixedly installed on the fixed joint plate (20) by fastening the fastening means (40). Thereafter, the belt (60) is fixedly placed on the multifunctional belt bracket (30), and the known support material is installed.

[0112] In this way, the CIP method can safely support the belt (60) by applying a fixed joint plate (20), a multi-functional belt bracket (30), and a fastening means (40). In addition, it is economical because the fastening means (40) can be released and the multi-functional belt bracket (30) can be removed and recycled.

[0113] <SCW 공법 적용시>

[0114] First, as shown in Fig. 31, an auger or casing perforation is performed at a planned location, and a soil concrete retaining wall is formed by injecting and stirring cement milk, and then an H-shaped steel pile support pile (10) is inserted to form a retaining wall (200) by integrating a fixing bonding plate (20) into the wall, and then excavation is performed to a certain depth along the planned excavation area.

[0115] Next, the multifunctional belt bracket (30) is integrally assembled into the fixed joint plate (20) integrally attached to the exposed flange of the H-shaped steel pile support pile (10) through a fitting connection between the male joint (303) and the female joint (203), and then the multifunctional belt bracket (30) is fixedly installed on the fixed joint plate (20) by fastening the fastening means (40).

[0116] In this way, the SCW method can safely support the belt (60) by applying a fixed joint plate (20), a multi-functional belt bracket (30), and a fastening means (40). In addition, it is economical because the fastening means (40) can be loosened to remove the multi-functional belt bracket (30) and recycle it.

[0117] Meanwhile, the present invention can construct a retaining wall as shown in Fig. 32 by applying a PHC pile support pile (10).

[0118] That is, a soil retaining wall (200) is constructed by repeatedly inserting a PHC pile support pile (10) and a general PHC pile (10a) that are integral with a connecting plate (20) for fixing a belt bracket after drilling an auger or casing at a planned location in the ground into the drilled hole (5).

[0119] Afterwards, the multifunctional belt bracket (30) is assembled into a single piece through a fitting connection between the male joint (303) and the female joint (203) to the belt bracket fixing joint plate (20) of the PHC pile support pile (10), and then the multifunctional belt bracket (30) is fixed to the belt bracket fixing joint plate (20) by fastening the fastening means (40).

[0120] Next, the belt (60) is supported by the multi-functional belt bracket (30) and the support material is installed.

[0121] In this way, in the earth retaining method using the PHC pile support pile (10), the fixing joint plate (20), the multi-functional belt bracket (30) and the fastening means (40) are applied so that the belt (60) can be safely supported, and the fastening means (40) can be loosened to remove the multi-functional belt bracket (30) and reused, thereby achieving economic efficiency.

[0122] While the present invention has been described in detail with reference to the presented embodiments, those skilled in the art will appreciate that various modifications and variations can be made without departing from the technical spirit of the present invention. The present invention is not limited by such modifications and variations, but is instead limited by the appended claims.

[0123] The present invention improves the existing method of fixing a beam by welding after on-site fabrication during the construction of a retaining wall, thereby safely securing the fixing force of a multifunctional belt bracket in a way that is safer, more economical, and minimizes the risk of work conditions, and makes it economical to construct a retaining wall using various methods by reusing the multifunctional belt bracket, and can reinforce the flexural rigidity and strength of the pile.

Claims

1. For support piles used in earth retaining wall construction, A support pile having a fixing joint plate of a multi-functional belt bracket, characterized in that a belt bracket is installed in the longitudinal direction at a certain section of the above support pile and a fixing joint plate for pile reinforcement is installed so that the belt bracket supporting the belt and the fixing joint plate can be fastened to each other by joining or fitting.

2. In paragraph 1, The above-mentioned support pile is an H-shaped steel pile, and a gear or saw-tooth type fixing joint plate is integrally attached to the front flange of the H-shaped steel pile, or a fixing joint plate having a fitting structure with a male or female joint is integrally attached to the front and rear flanges, and a support pile having a fixing joint plate of a multi-functional belt bracket characterized in that round or long holes are installed at regular intervals on both sides centered on the fixing joint plate on the front or front and rear of the flange.

3. In paragraph 1, The above support pile is a PHC pile comprising a hollow pile body made of high-strength concrete, spiral steel wires embedded in the concrete within the pile body, and PC steel bars arranged in a circular manner in contact with the spiral steel wires and embedded in the concrete of the pile body to introduce compressive stress into the concrete. A support pile having a fixing bonding plate of a multifunctional belt bracket, characterized in that the above-mentioned fixing bonding plate is installed in a direction perpendicular to the main axis of the earth retaining wall so that one side is exposed to the pile body.

4. In paragraph 3, A support pile having a fixing joint plate of a multi-functional belt bracket, characterized in that the support pile is further installed with a pile reinforcement bar made of a pair of triangularly processed steel bars arranged in an offset manner and connected at regular intervals along the length direction.

5. In paragraph 1, A support pile having a fixing joint plate of a multi-functional belt bracket, characterized in that the above-mentioned fixing joint plate has a T-shaped cross-section and a joint or insertion joint structure with a protruding or steel plate.

6. In paragraph 1, A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that the fixing joint plate has a reinforcing channel groove formed in one or two rows in the longitudinal direction of the pile body.

7. In paragraph 6, A support pile having a fixing joint plate of a multi-functional belt bracket, characterized in that the bolt head of a high-strength bolt is inserted into the above reinforcing channel groove and a bolt head catcher is further formed to prevent detachment.

8. In paragraph 6, A support pile having a fixing joint plate of a multi-functional belt bracket characterized in that a tooth-shaped joint portion is formed in the above reinforcing channel groove.

9. In paragraph 6, A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that the above fixing joint plate is provided with a fitting ring for fitting with a multifunctional belt bracket.

10. In paragraph 1, A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it further includes a multifunctional belt bracket that is detachably installed on the above-mentioned fixing joint plate to support the belt.

11. In paragraph 10, A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that an intermediate joint plate is bonded to the above-mentioned fixing joint plate and a multifunctional belt bracket is bonded to the intermediate joint plate and detachably fastened with a high-tension bolt, and when the multifunctional belt bracket and the intermediate joint plate are bonded to each other, the load of the belt is distributed to the fixing joint plate without going through the high-tension bolt, and the assembly is performed through an insertion connection between the protruding key and the keyhole.

12. In paragraph 11, A support pile having a fixing joint plate of a multi-functional belt bracket characterized in that the above protruding key or keyhole has a trapezoidal shape.

13. In paragraph 10, The above multi-functional belt bracket A detachable coupling plate having a male coupling portion or a female coupling portion on the back surface or both sides of the back surface; A lower hinge block rotatably hinged to the lower front surface of the detachable joint plate; An upper hinge block rotatably hinged to the upper front surface of the detachable joint plate; A belt support up / down adjustment screw that is freely installed on the upper hinge block and has an operating handle connected to the bottom; A belt support upper and lower slider that is installed on the upper hinge block so as to be able to move up and down by being screwed into the upper and lower adjustment screw of the above belt support; First, the belt support is supported on the upper part of the upper and lower sliders of the belt support; An upper hinge bolt hingedly connected to the front end of the above belt support; First, a lower hinge bolt hinged to the lower hinge block; Including an incline adjustment member that is screwed to the upper hinge bolt at one end and screwed to the lower hinge bolt at the other end to adjust the support angle of the belt support member according to the rotation operation direction; A support pile having a fixing joint plate of a multi-functional belt bracket, characterized in that the belt support can rotate left and right about the hinge axis of the lower hinge block and the upper hinge block, and the inclination and height of the belt support are adjusted according to the rotational operation direction of the inclination adjustment stand and the belt support up / down adjustment screw.

14. In paragraph 10, The above multi-functional belt bracket A detachable coupling plate having a male coupling portion or a female coupling portion on the back surface or both sides of the back surface; A bracket support installed on the front of the above detachable joint plate; A plurality of sliding links connected to the upper part of the above bracket support so as to be hinged and linearly movable and simultaneously connected in an X shape through mutual hinge connection; A pair of rotation support shafts connected to the hinge portion of the above-mentioned sliding link; An adjusting screw shaft that is screw-connected to a rotation support shaft on one side and is freely inserted into a rotation support shaft on the other side; A height-adjusting handle coupled to one end of the above-mentioned adjusting screw shaft and used for rotational operation; A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it includes a belt support that is hinged and linearly movable at the top of the above-mentioned sliding link and whose height is adjusted according to the rotational operation direction of a height-adjusting handle.

15. In paragraph 10, The above multi-functional belt bracket A detachable coupling plate having a male coupling portion or a female coupling portion on the back surface or both sides of the back surface; An upper hinge bolt hingedly connected to the front end of the above belt support; A lower hinge bolt having one end hinged to the lower front surface of the detachable joint plate; A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it includes an inclination adjustment member that is screwed to the upper hinge bolt at one end and screwed to the lower hinge bolt at the other end to adjust the support angle of the belt support member according to the rotation operation direction.

16. In paragraph 10, The above multi-functional belt bracket A detachable coupling plate having a male coupling portion or a female coupling portion on the back surface or both sides of the back surface; A bracket support that is hinge-connected at one end to the lower front side of the detachable joint plate and hinge-connected at the other end to the upper front side of the detachable joint plate and rotates left and right; A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it includes a belt support integrated into the upper surface of the bracket support.

17. In paragraph 10, A support stake having a fixing joint plate of a multifunctional belt bracket, characterized in that the multifunctional belt bracket has a detachable joint plate having a hook portion for hanging on the back surface, and the fixing joint plate has hook portion hanging holes arranged in a double row so that the hook portion for hanging can be inserted and fixed.

18. In paragraph 10, A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that the multifunctional belt bracket and the fixing joint plate are fitted or interlocked through a male joint portion and a female joint portion so that the use load received by the multifunctional belt bracket is not transferred as a shear force to the fastening means that fixes and separates the multifunctional belt bracket to the fixing joint plate.

19. In paragraph 18, A support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that the male or female joint portion is formed as a wave-shaped curved, triangular, square, trapezoidal, or sawtooth-shaped joint projection on both sides or the back surface of the detachable joint plate of the multifunctional belt bracket, or is formed as a joint groove having a shape or form identical to that of the joint projection and fitted into the front walls facing each other of a channel groove formed on both sides or the front surface of the fixing joint plate of the belt bracket.

20. In paragraph 1, A support pile having a fixing bonding plate of a multi-functional belt bracket, characterized in that a foldable safety hook bracket is further installed on the above-mentioned fixing bonding plate for use as a safety belt hanger to prevent falls of workers working on various support materials installed in a excavation after construction of a retaining wall, and the foldable safety hook bracket includes a safety hook support plate attached to an intermediate bonding plate additionally fixed by welding to the above-mentioned fixing bonding plate, and one or more safety hooks hingedly connected to the safety hook support plate.

21. In the construction of earth retaining walls, A step of drilling a hole at a planned location in the ground, inserting an H-shaped steel pile support pile manufactured by integrating a fixing plate into the drilled hole, and then excavating to a certain depth along the planned excavation area; A step of repeatedly installing a soil plate between adjacent H-shaped steel pile support piles; A step of assembling a multi-functional belt bracket to a fixing joint plate through a fitting connection between a male and female joint, and then fixing the multi-functional belt bracket to the fixing joint plate by fastening a fastening means; A method for constructing a retaining wall using a support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it includes a step of fixing a belt to a multifunctional belt bracket.

22. In the construction of earth retaining walls, A step of installing H-shaped steel pile support piles and reinforcing mesh by integrating fixing plates after drilling holes in the planned location of the ground; A step of forming an earth retaining wall by repeatedly pouring concrete or mortar around H-shaped steel pile support piles and reinforcing steel mesh through perforated holes; A step of excavating to a certain depth along the planned excavation area on the front side of the earth retaining wall; A step of assembling a multi-functional belt bracket to a fixing joint plate installed on an H-shaped steel pile support pile through a fitting joint between a male joint and a female joint, and then fixing the multi-functional belt bracket to the fixing joint plate by fastening a fastening means; A method for constructing a retaining wall using a support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that the method includes a step of installing a support material by supporting the belt on a multifunctional belt bracket.

23. In the construction of earth retaining walls, A step of forming a soil concrete water barrier by excavating and mixing cement milk through a drilling machine at a planned location on the ground, A step of forming a retaining wall by inserting H-shaped steel pile support piles manufactured by integrating a fixing joint plate at each set location; A step of excavating to a certain depth along the planned excavation area on the front side of the earth retaining wall; A step of assembling a multi-functional belt bracket to a fixing joint plate installed on an H-shaped steel pile support pile through a fitting joint between a male joint and a female joint, and then fixing the multi-functional belt bracket to the fixing joint plate by fastening a fastening means; A method for constructing a retaining wall using a support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that the method includes a step of installing a support material by supporting the belt on a multifunctional belt bracket.

24. In the construction of earth retaining walls, (a) A step of constructing a retaining wall by repeatedly inserting PHC pile support piles and PHC piles into the drilled holes, each having a fixing joint plate integrated therein after drilling at a planned location in the ground; (b) A step of assembling a multi-functional belt bracket into a fixed joint plate of a PHC pile support pile through a fitting connection between a male and female joints, and then fixing the multi-functional belt bracket to the fixed joint plate by fastening a fastening means; (c) A method for constructing a retaining wall using a support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it includes a step of installing a support material by supporting the belt on a multifunctional belt bracket.

25. In the construction of earth retaining walls, (a) A step of constructing a retaining wall by repeatedly inserting PHC pile support piles and PHC piles into the drilled holes, each having a fixing joint plate integrated therein after drilling at a planned location in the ground; (b) A step of fixing a multi-functional belt bracket by joining or fitting it to a fixing joint plate of a PHC pile support pile; (c) A method for constructing a retaining wall using a support pile having a fixing joint plate of a multifunctional belt bracket, characterized in that it includes a step of installing a support material by supporting the belt on a multifunctional belt bracket.

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