KR101973566B1 - Sheathing method for constructing both sheathing wall and cutoff collar by bolting cutoff plate to phc pile with longitudinal plate - Google Patents

Abstract

The present invention relates to a sheathing method and, more specifically, to a sheathing method for constructing both a sheathing wall and a cutoff collar by joining cutoff plates with bolts to PHC piles with attached longitudinal plates, in which longitudinal plates provided with a plurality of bolt holes and nuts at arbitrary intervals are previously attached in two or three rows to conventional PHC piles, a peristyle type sheathing wall is formed underground with the deformed PHC piles, and the sheathing wall and the cutoff wall are concurrently formed between the neighboring separated PHC piles by joining the cutoff plates to the PHC piles having the attached longitudinal plates with the bolts as bed excavation is performed. The present invention uses a method for welding the plates, capable of being visually checked, not a ground grouting method which is uncertain to construct, on the inside of excavation, not on a back side of sheathing, arranges equidistantly the PHC piles to which the longitudinal plates are attached in three rows while considering the position of a beam hanger and welds the beam hanger to the longitudinal plates to easily ensure safety. The present invention places filling concrete in hollow spaces of the PHC pillars to prevent a concentrated load of a furring strip contact part or cleavage fracture caused by freezing of underground water flowing into the spaces during winter which is a problem of a conventional method using the PHC pillars.

Description

TECHNICAL FIELD [0001] The present invention relates to a pile pile having a longitudinal plate attached to a carcass pile, and a method of manufacturing the pile pile,

The present invention relates to an earth retaining method, and more particularly, to a method of constructing a retained PHC pile having a plurality of longitudinally arranged plates provided with a plurality of bolt holes and nuts at arbitrary intervals in two or three rows, A method of forming a water wall by joining a car-receiving sheet to a longitudinal plate between neighboring PHC piles by bolting the reinforcing steel using a reinforcing steel, while forming a main thermal-type earth retaining wall in the ground, A PHC pile having longitudinal longitudinal plates attached in three rows at regular intervals in consideration of the location of the pivot hooks is used as a method of bolting the car-receiving sheet which can be visually confirmed, instead of the ground grouting, And the braces are welded to the longitudinal plates. Thus, safety can be secured easily, and PHC In order to prevent the occurrence of fracture due to the concentrated load of the tie contact point or the freezing of the groundwater introduced into the winter cavity, which is pointed out as a disadvantage in the method using the existing PHC pile by placing the filled concrete in the hollow part of the pile, The present invention relates to a retention method for simultaneously forming an earth retaining wall and a water wall by joining a car-receiving sheet to a PHC pile having a longitudinal plate having bolt holes and nuts.

In the case of the wall-cladding method, H-file using ready-made steel or CST (CAST IN PLACE) wall with concrete after drilling in the field has been mainly used. In both methods, grouting auxiliary method is added to the backside Is the most widely applied method.

The H-file wall method is a method that inserts H-file after perforating with the most commonly used clay construction method in underground excavation work, and inserts wooden soil plate or concrete soil wall between H-files according to excavation progress. Since the H-file wall method has a small stiffness and a large displacement, it is limited in application to the soft ground or adjacent to the building. Since it is vulnerable to the order, it is necessary to perform grooving in the back- And the like.

C.I.P earth retaining wall method is a method to form an earth retaining wall by inserting H-pile or reinforcing net after drilling and then pouring concrete and connecting cured circular columns. The CIP earth retaining wall method has a lot of field work such as reinforcing mesh assembly and excessive concrete pouring, and the workability is decreased. When concrete is poured, it is difficult to secure the structural reliability due to frequent formation of poor pile due to groundwater and soil agitation. It is a fact that many occur. Also, there is a problem of ground contamination due to the backing order grouting.

Various improvement methods have been developed and applied to overcome the disadvantages of the existing H-file and C.I.P earth retaining wall method and to improve the economical efficiency. Improvement methods mainly consist of a series of cast-in-place concrete wall structures modified by the CIP wall method, and a method of using an existing concrete pile as an earth retaining wall. CIII method, UNI Wall method, PHC W E-PHC wall pile method, e-cone wall pile PHC retaining wall method, and Hi-PHC method.

Among these improvement methods, Korean Patent No. 10-1302743 (PHC pile for wall pile and method of constructing earth retaining wall using it, aka e-cone wall pile PHC retaining wall method) has been disclosed.

The method for constructing the PHC pile for wall pile and the earth retaining wall using the same comprises the steps of: (A) fixing a guide beam to two columns of H-shaped steel at a location of the earth retaining wall; (B) injecting cement mortar after inserting the casing into the ground in the grounding wall installation guide beam and using the inside of the casing to cover the ground; (C) A PHC pile is inserted into the casing so that the bolt fixing nut embedded in the PHC pile corresponds to the excavation surface after lifting the hook of the crane to the lifting ring of the PHC pile to insert the PHC pile into the casing. A step of embedding the upper end portion in the ground so as to protrude from the ground; (D) drawing the casing; (E) After lifting the lifting guide bar with a lifting guide member formed so as to face the lifting ring at right angles to the lifting ring at the end of the PHC pile of the PHC pile, the lifting height of the PHC pile To be constant; (F) repeating the steps (B) to (E) at predetermined intervals to form a column-type earth retaining wall; (G) fixing the supporting bracket supporting the wale on the steel plate of the exposed PHC pile after excavating the buried ground of the PHC pile to a predetermined depth when the main thermal type earth retaining wall is formed; (H) supporting the wall by mounting a wale band of the H-shaped steel to the supporting bracket and connecting the wale band to the supporting bracket,

As shown in FIGS. 1 and 2, the PHC pile 100 for a wall pile is cut or punched in the longitudinal direction on the outer surface of the pile body 110 to form a straight surface 120 formed to have the same width as the steel sheet, The lifting guide 130 is formed to be installed at the end of the file body 110. The lifting guide 130 is formed to be perpendicular to the lifting ring 130 and opposed to the end of the file body 110, A bolt fixing nut 150 is embedded in the bolt fixing nut 150 so that the steel plate 160 is fixed by being spaced apart from the straight surface 120 at a predetermined distance. The steel plates 160 and 160 'are welded and fixed to the support bracket 190 supporting the wale band 200 so that the brackets 190 are welded to each other. The steel plates 160 and 160' ) And the straight surface (120) and fixed to the bolt through the bolt guide hole (161) The nut (150) is configured to be fixed to the fastening bolt 170.

However, in order to reduce the construction cost, the PHC pile for the conventional wall pile and the method for constructing the earth retaining wall using the same have been proposed in the field as shown in FIG. 3, The modified PHC pile (e-cone wall pile) and the existing PHC pile are mixed to form a wall. After the wall is formed, the plate is joined to the PHC pile deformed with the bolt while welding, and the brace is welded to this plate to construct the wale and strut. This is simply replacing the C.I.P wall that is laid in the field with the ready-made product, and the back grouting for the order is still necessary and has the following disadvantages.

① There is a risk of environmental pollution due to the groundwater flow because the back grouting is required for the order.

② Because the back grouting is applied, the degree of certainty is insufficient and maintenance is very difficult in case of leakage.

③ When the nut is not installed properly or excessive load is applied during manufacturing, bolt dropout is frequent.

④ The PHC pile is directly contacted with the band zone to cause the concentrated load, but the PHC pile is hollow structure, and fracture easily occurs.

⑤ In winter, there is a high possibility of fracture due to freezing expansion of groundwater flowing into PHC pile hollow.

In addition, the HI-PHC method of the improvement method is a method developed to compensate for the disadvantage of the method of constructing the PHC pile for wall pile and the construction of the earth retaining wall using the pile pile. As shown in FIG. 4, The CIP pile is used instead of the modified PHC pile in which the nut is pre-installed, and the rest is a method of applying the existing PHC pile as it is.

However, the HI-PHC method also requires back grouting for order and has the following disadvantages.

① There is a possibility of environmental pollution due to the flow of ground water because back grouting is required for the order.

② Because the back grouting is applied, the degree of certainty is insufficient and maintenance is very difficult in case of leakage.

③ When piling C.I.P piles, it is difficult to secure structural reliability due to frequent formation of poor piles due to groundwater and soil agitation.

④ Since a concrete pile and an existing PHC pile are mixed, it is difficult to adjust the cycle of concrete pouring equipment because the pile of concrete is laid and the concrete piling is repeated after 3 ~ 4 piercing and insertion.

⑤ The PHC pile is directly contacted with the band zone to cause the concentrated load, but the PHC pile is hollow structure and fracture easily occurs.

⑥ PHC When the groundwater flows into the hollow part of the pile and it is frozen because the temperature is low, there is a high possibility of fracture due to expansion.

In addition, an improved water retaining wall using a PHC pile, which is a Korean Patent No. 10-1210721, is disclosed in the improved method.

As shown in FIG. 5 and FIG. 6, the water retaining wall using the PHC pile includes a water level plate 300 for preventing the outflow of groundwater by connecting the PHC pile 200 and the adjacent PHC piles installed at a distance from each other .

The channel member 210 is fixed to the PHC pile 200 using the front end connection member 220 to install the water level plate 300 between the neighboring PHC piles 200.

The channel member 210 is longitudinally inserted into both outer surfaces on the center line CL passing through the center of the cross section of the PHC pile 200 to form the pitch plate insertion groove 211. That is, a pair of channel members 210 installed on the outer surface of the PHC pile 200 are located on the same line passing through the city center. The channel member 210 is fixed to the PHC pile 200 such that the opening is made to face outward. The channel member 210 is installed over the entire length of the PHC pile 200 and forms a groove into which the one end of the water level plate 300 is inserted.

The channel member 210 is fixed to the PHC pile 200 using the shear connector 220. The shear connection members 220 are installed at predetermined intervals along the longitudinal direction of the channel member 210 to integrally join the channel member 210 to the PHC pile 200.

A plurality of shear connectors 220 are welded to the channel member 210 at regular intervals and the shear connector 220 is welded to the reinforcing bars 201 of the PHC pile 200 to fix the channel member 210 to the PHC The PHC pile having the channel member 210 can be manufactured by centrifugally forming the pile. Therefore, the PHC pile 200 has a cross-sectional shape having a groove into which one end of the aeration plate 300 is inserted in the longitudinal direction on the outer surface.

A water level plate (300) is installed between adjacent channel members of neighboring PHC piles. Therefore, groundwater can be prevented from flowing into the excavation through the PHC piles.

The order plate 300 includes elastic bent portions 320 that are formed at both ends in the width direction to be inserted into the pitch plate insertion groove 211 and are elastically deformed to elongate and contract the length between the coupling ends 310, Sectional shape formed between the engaging ends 310. As shown in Fig.

The order plate 300 can be manufactured by bending a steel plate having a length corresponding to the length of the channel member 210 so as to form the combining end 310 and the elastic bent portion 320.

However, the waterproofing walls using the above PHC piles have not been applied because of the following problems due to the difficulty in actual construction.

(1) Since the 100% order is not possible due to the adhesion between the order plate and the order groove, there is a great risk of leakage during construction.

② When the PHC pile is inserted into the casing at the time of construction and the casing is demolished, the surrounding soil is collapsed, and the soil is adhered to the PHC pile. In this case, since the soil covers the water-leveling plate insertion groove 211, .

③ For this purpose, the thin plate is deformed when the plate is hammered.

④ In PHC pile, vertical error (inclined installation) occurs in the process of drilling and inserting. If the error is severe, it is difficult to insert the water level plate or there is a gap between the insertion grooves.

⑤ If leakage occurs due to poor order, repair is impossible.

⑥ When installing, it is necessary to arrange the insertion grooves in the center line of the city precisely in a line so that construction can not be done if it is not arranged in a row, and it is very difficult to construct a straight line on a plane arrangement during actual construction.

⑦ In order to install the hooks, additional nuts or studs must be inserted into PHC piles, which complicates the construction and may cause the bolts to fall off.

Korean Patent No. 10-1302743 Korean Patent No. 10-1210721

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a PHC pile having a plurality of longitudinal plates each having a plurality of bolt holes and nuts at arbitrary intervals, A method of forming a water-wall by bolting a car-receiving sheet to a longitudinal plate between neighboring PHC piles using bolts for reinforcing steel, thereby forming a water- In the inside of the excavation, PHC piles with longitudinal plates attached at regular intervals with constant spacing considering the position of pivoting are used. And the pawl hooks are welded to the longitudinal plates. Thus, safety can be secured easily, and PHC piles The pore-filling concrete is placed in the hollow of the PHC pile to prevent the occurrence of fracture due to the concentrated load of the tie contact point or the freezing of the groundwater introduced into the winter season The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a retention method in which a car seat is bolted to a PHC pile having a longitudinal plate having a bolt hole and a nut to simultaneously form an earth retaining wall and a water wall.

According to an aspect of the present invention,

A PHC pile with a longitudinal plate is used to form a main thermal type earth retaining wall in the ground. The PHC pile spaced apart from the PHC pile spaced apart by a tappet is bolted to the longitudinal plate using bolts for reinforcing steel, And a water wall is formed inside the wall.

In this method, a PHC pile having longitudinal plates attached to both sides and one central portion of one side is attached to a PHC pile having longitudinal plates attached thereto by bolting the car-receiving sheet to the PHC pile having the longitudinal plate attached thereto. And the hooks are welded to the longitudinal plates provided at one central portion.

Here, the longitudinal plate of the PHC pile may be formed in the form of a rectangular plate of the PHC pile, or in a plate shape in which both ends are bent in multi-tiers or in a plate shape bent in an " L & And a bolt hole and a nut for bolt-joining the car-receiving sheet using the reinforcing steel, and a fixing member such as a fixing steel or a stud is coupled to the rear surface to be attached to the pile body.

According to another aspect of the present invention,

A PHC pile having a longitudinal plate attached at two or three rows at an arbitrary interval is inserted into the casing in consideration of the position of pivoting in the casing, while the casing is inserted into the location ground of the installation of the earth retaining wall using an auger A step of forming an earth retaining wall body by repeating a process of discharging the casing to form a main heating type earth retaining wall body in the ground; Filling concrete into the hollow portion of the PHC pile when the main thermal type earth retaining wall is formed; A trenching step of excavating the inner ground of the earth retaining wall formed of the PHC pile to a predetermined depth; A car-containing sheet installing step of forming a car wall by bolting the car-containing sheet to a longitudinal plate between optional PHC piles and neighboring PHC piles using reinforcing steel bars; A step of attaching a brace to a longitudinal plate of each PHC pile to which a longitudinal plate is attached in three rows at a hooking position; A wale and strut installation step of installing a wale on an upper portion of the brace and coupling the strut in a lateral direction to the wale so as to support the main thermal type earth retaining wall; And a repetitive finishing step of repeating the trenching step, the car-containing sheet installing step, the pivoting step, and the wale-setting and strut installing step to complete the earth retaining wall by excavating to the final excavation surface.

In this case, when the final excavation layer is a permeable layer that is easy to drain out from the groundwater, the groundwater of the back wall of the earth retaining wall is connected to the PHC pile with the longitudinal plate by bolting the car- The groundwater can be eluted to the bottom surface of the final excavation surface due to the difference in hydraulic pressure between the excavation surface and the excavation surface. Therefore, a trench is formed around the excavation wall deeper than the final excavation surface, And then filling the trench with concrete to prevent leakage.

In this case, if the final excavation layer is a permeable layer that is easy to drain out from the groundwater, it is possible to prevent the groundwater in the back of the earth retaining wall The PHC pile is inserted into the casing and the grouting is injected into the casing below the final excavation surface to form the order around the PHC pile. And the car-receiving sheet is bolted to the final excavation surface using reinforcing steel to prevent water leakage.

In this case, when the final excavation layer is a permeable layer which is easy to drain out from the groundwater, the groundwater retention wall and the water wall are formed by joining the car-receiving sheet to the PHC pile with the longitudinal plate by bolts, Since the groundwater can be eluted to the bottom surface of the final excavation surface due to the difference in hydraulic pressure, the turbine wheel is first installed and the car-receiving sheet is installed as a bolt using the reinforcing steel to the final excavation surface. Grouting is injected from the excavation surface around the PHC pile to prevent water leakage.

Here, the retaining method for joining the car-receiving sheet to the PHC pile with the longitudinal plate by bolts to simultaneously form the retained wall and the water wall is characterized in that the side of the PHC pile is thicker than the gap between the perforation hole and the PHC pile, In the case of forming the earth retaining wall by attaching the soil discharge block material made of the material in the longitudinal direction, when the inner ground of the earth retaining wall is excavated, sand or soil of the back side is introduced into the excavation inside the neighboring PHC pile. And in the long term, the car-receiving sheet prevents leakage of soil and ground water.

According to the earth retaining method for joining the car-receiving sheet to the PHC pile with the longitudinal plate having a plurality of bolt holes and nuts of the present invention having the above-described structure by bolts to simultaneously form the earth retaining wall and the water wall, , It is possible to secure the quality and structural reliability by using factory made PHC pile, and it is excellent in workability due to minimization of field work, and it is eco-friendly because there is no problem of ground contamination caused by groundwater by excluding grounding grade grouting , Unlike grouting in the ground where the construction is uncertain because it is impossible to visually check it, it can be confirmed visually from the inside of the excavation rather than the back of the retaining wall, and bolted connection is carried out using reinforcing steel .

According to the present invention, it is difficult to repair the leaking water and the soil leaking due to poor grouting in the ground on the back side of the earth retaining wall. However, the method according to the present invention is simple in repairing leaks , And the car-receiving grouting is expensive enough to occupy about 25% of the total retention cost. However, it is economical because it excludes it, and the filled concrete in the PHC pile is poured, so that the concentrated load at the contact area of the belt- It is safe to break fracture due to freezing of the bracket, and the bracket is simply welded to the longitudinal plate, so that workability and safety can be improved.

1 to 3 are views showing a conventional e-Conjugate wall pile PHC retaining wall construction method.
4 is a view showing a conventional HI-PHC method.
5 and 6 are views showing a water retaining wall using a PHC pile, which is a conventional domestic patent No. 10-1210721.
7 is a perspective view showing the structure of a PHC pile with a longitudinal plate according to the present invention.
8 is a cross-sectional view illustrating a construction method according to various embodiments of a longitudinal plate attached to a PHC pile of the present invention.
9 is a side cross-sectional view showing the construction of the earth retaining wall constructed by the PHC pile with the longitudinal plate according to the present invention.
10 is a plan view of Fig.
11 is a longitudinal front view of Fig.
FIG. 12 is a graph showing the relationship between a vertical or horizontal error of a PHC pile having a longitudinal plate according to the present invention (a) and a vertical or horizontal error (b) Sectional view showing a state in which the car-accommodating sheet and the reinforcing steel are provided for the case (c) in which the width of the car-accommodating sheet is adjusted by cutting the car-
13 to 20 are process explanatory diagrams for explaining a retaining method for joining a car-receiving sheet to a PHC pile with a longitudinal plate according to the present invention by bolts to simultaneously form an earth retaining wall and a water wall.
FIG. 21 is a process explanatory diagram for explaining a method of additionally attaching a tip end portion of a retention method for joining a car-receiving sheet to a PHC pile with a longitudinal plate according to the present invention by bolts to simultaneously form an earth retaining wall and a water wall.
FIG. 22 is a view illustrating a method of sandwiching a PHC pile with a longitudinal plate according to an embodiment of the present invention by bolting the car-receiving sheet with bolts to simultaneously form an earth retaining wall and a water wall. In the excavation step, (A) is a step of inserting a PHC pile into a casing after drilling, (b) a step of inserting a PHC pile into the casing after punching, (C) is the step of excavating the inner side after forming the main thermal type earth retaining wall with the PHC pile and filling sand between the casing and the PHC pile and discharging the casing. In the case of the above-described embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of a PHC pile with a longitudinal plate having a plurality of bolt holes and a nut according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 7 is a perspective view illustrating the construction of a PHC pile with a longitudinal plate according to the present invention, and FIG. 8 is a cross-sectional view illustrating a construction method according to various embodiments of a longitudinal plate attached to the PHC pile of the present invention.

7 and 8, a PHC pile 10 with a longitudinal plate according to the present invention is provided with two columns (not shown) on one side in the longitudinal direction of the pile body 11 as shown in FIG. 7 (a) 7 (b), a longitudinal plate 20 attached in three rows on one side and one central portion is fixed to a mold (not shown) for producing PHC piles (not shown) by bolts, The reinforcing net 15 having the steel rods 13 coupled to the mold is inserted in the same manner as in the manufacture of the existing PHC pile and the concrete is placed to tighten the steel rods 13 and then rotated so as to generate a centrifugal force, , The hollow PHC pile shape is completed, and curing and mold demoulding are performed. At this time, the bolt hole 22 and the nut N buried in the inside of the pile are connected to the longitudinal plate 20 by the bolts using the reinforcing steel 40, It is preferable that they are formed with intervals.

At this time, the longitudinal plate 20 may be formed in a rectangular plate shape as shown in FIG. 8, or in a plate shape in which both ends are bent in a multi-step fashion or in a plate shape bent in an "L" shape, A fixing member 21 such as a fixing steel bar or a stud is engaged.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of an earth retaining wall constructed by a PHC pile with a longitudinal plate according to the present invention will be described in detail with reference to the accompanying drawings.

9 is a side sectional view showing the construction of the earth retaining wall constructed by the PHC pile with the longitudinal plate according to the present invention, Fig. 10 is a plan view of Fig. 9, Fig. 11 is a longitudinal front view of Fig. 12 shows that the PHC pile with longitudinal plate according to the present invention has a vertical or horizontal error of less than (a) and a vertical or horizontal error of (b) Fig. 5 is a cross-sectional view showing a state in which a car-accommodating sheet and a reinforcing steel are provided for the case (c) in the case where the width of the car-receiving sheet is adjusted by cutting.

9 to 12, the earth retaining wall 1 constructed by the PHC pile with the longitudinal plate according to the present invention is constructed such that the PHC pile 10 with the longitudinal plate 20 is punched by the punching equipment The PHC piles 10 are arranged in a row at a predetermined position and are continuously installed in the ground. The troughs are sequentially applied to the PHC piles 10, and a plurality of bolt holes 22 and nuts The car-receiving sheet 30 is joined to the direction plate 20 by the bolts B using the reinforcing steel 40 to form a water-wall. At this time, concrete is poured into the hollow portion of the PHC pile 10, if necessary. The PHC pile 10 having the longitudinal plate 20 formed in three rows is installed in consideration of the position and the PHC pile 10 is attached to the central portion of one side of the PHC pile 10, The wand 50 is directly welded to the longitudinal plate 20 and the wale 60, which is an H-shaped steel, is placed on the upper surface of the bracket 50 and then fixed.

Then, the strut 70 is joined to the wale 60 facing each other in a horizontal straight line.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in greater detail with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a PHC pile according to an embodiment of the present invention;

FIGS. 13 to 20 are diagrams for explaining a retention method for joining a car-receiving sheet to a PHC pile with a longitudinal plate according to the present invention by bolts to simultaneously form an earth retaining wall and a water wall. FIG. FIG. 22 is a process explanatory diagram for explaining a method of additionally attaching a front end portion of a retention method for joining a car-receiving sheet to a PHC pile with a longitudinal plate according to the present invention by bolts to simultaneously form an earth retaining wall and a water- In the excavation step of securing the earth retaining wall and the water wall by joining the car-receiving sheet to the PHC pile with the longitudinal plate according to the invention by bolts, sand or soil to fill the back surface between the neighboring PHC piles in the excavation inner side A process for explaining a method of attaching a soil release inhibitor to a PHC pile (B) is a step of filling the casing between the casing and the PHC pile with sand and discharging the casing, (c) the PHC pile, and (c) FIG. 3 is an explanatory view showing that the filling sand or soil is prevented from being introduced by the slurry outlet blocking material in the step of excavating the inside after forming the earth retaining wall.

Referring to FIGS. 13 to 22, a securing method for securing an earth retaining wall and a water wall by joining a car-receiving sheet to a PHC pile with a longitudinal plate according to the present invention by bolting, comprises a securing wall forming step (S10) A concrete installation step S20, a tearing step S30, a car-receiving sheet installation step S40, a pivoting installation step S50, a wale and strut installation step S60, and a repetitive completion step S70).

&Quot; Earth retaining wall forming process-S10 "

13, the interior of the casing C is covered while inserting the casing C into the ground at the installation position of the earth retaining wall using the auger A, and the longitudinal plate 20 The PHC pile 10 with the PHC pile 10 attached thereto is inserted and the casing C is discharged to form the main thermal type earth retaining wall 1 in the ground.

At this time, the PHC piles 10 having the longitudinal plates 20 formed in two rows are consecutively inserted N times, and one PHC pile 10 having the longitudinal plates 20 formed in three rows is inserted And one PHC pile 10 in which the longitudinal plates 20 are formed in two columns and N PHC piles 10 in which the longitudinal plates 20 are formed in three columns are repeatedly inserted.

It is preferable to fill the perforation hole D between the casing C and the PHC pile 10 with sand S so as to prevent the soil from collapsing on the back surface of the casing C when the casing C is removed, A guide beam (not shown) is preferably fixedly installed in two rows at the installation position of the earth retaining wall body 1 so as to be inserted into the earth retaining wall body 1.

22, the soil-outflow barrier 80 made of a sponge or the like, which is thicker than the gap between the perforation hole D and the PHC pile 1 on the side of the PHC pile 10 and is excellent in cushioning, The PHC pile 10 is inserted into the casing C and the casing C is discharged to form the earth retaining wall body 1. When the inner ground of the earth retaining wall 1 is excavated, It is possible to temporarily prevent the sand filling S on the backside or the soil from flowing into the excavation by the earth / sand blocking material 80, and in the long term, the car-receiving sheet 30 prevents the outflow of the soil and groundwater.

"In-situ Concrete Casting Process-S20"

When the main thermal type earth retaining wall 1 is formed, as shown in FIG. 14, the inner filling concrete is poured up to the upper surface of the hollow portion of the PHC pile 10. At this time, the filled concrete can be omitted or partially performed considering the load acting on the retaining wall 1, the construction period and the time period.

&Quot; Terasing process-S30 "

When curing of the filled concrete is completed in the hollow part of the PHC pile 10, the ground inside the earth retaining wall 1 is first excavated to a predetermined depth (for example, 1 to 5M) as shown in FIG.

"Car seat installation process-S40"

When the primary excavation is completed, as shown in FIG. 16, a nut (N) is attached to an inside of the pile between an arbitrary PHC pile (10) and a neighboring PHC pile (10) The car-containing sheet 30 is joined to the longitudinal plate 20 provided with the bolts B by using the reinforcing steel 40 to form a water-wall. 12 (b), since the car-receiving sheet 30 has elasticity even when a vertical or horizontal error occurs when the PHC pile 10 is in close proximity to the pile 10, It is possible to bolt the car-containing seat 30 to the nut attached to the direction plate 20 by using the reinforcing steel 40. [ If the vertical or horizontal error of the PHC pile 10 occurs excessively, as shown in FIG. 12 (c), the width of the PHA pile 10 is adjusted by cutting the car- It is possible to connect the car-receiving sheet 30 and the reinforcing steel 40 to the longitudinal plate 20 of the car body with bolts, which is excellent in flexibility, so that the carcass structure is superior in workability to the conventional retaining method (Patent Document 002).

"Hanging hook installation process-S50"

When the car-containing sheet 30 is all bolted to the longitudinal plate 20 of the spaced-apart neighboring PHC piles 10 using the reinforcing steel 40, as shown in Fig. 17, Welds the braces 50 to the longitudinal plate 20 of the PHC pile 10 to which the orientation plate 20 is attached. At this time, the beam retainer 50 is formed of a reinforcing bar or an angle-type section steel.

"Wale and strut installation process-S60"

17, a wale 60, which is an H-shaped steel, is provided on the upper portion of the brace 50, and a wale 60 is provided in the wale 60 so as to support the wired heat insulating wall 1, To engage the strut 70. At this time, the inner surface of the wale 60 is in close contact with the outer surface of the PHC pile 10.

&Quot; Repeat completion process-S70 "

When the installation of the wrist strap 40 and the strut 70 is completed, as shown in Figs. 18 and 19, the tearing step S30, the car-receiving sheet installing step S40, ) And the stranding and strut installation process (S60) are repeated as one cycle N times to the final excavation surface to complete the earthworking work.

As shown in FIG. 21, when the final excavated surface layer is a permeable layer that can easily drain out groundwater, the soil retaining method for simultaneously forming the earth retaining wall and the water wall with the PHC pile according to the present invention, The groundwater can be drained to the bottom of the final excavation surface due to the difference in hydraulic pressure. In this case, as shown in FIG. 21 (a), the trench T is formed by drilling the perimeter of the earth retaining wall 1 deeper than the final excavated surface, and the reinforcing steel The trench T may be filled with concrete to prevent leakage, or the PHC pile may be inserted into the casing C as shown in FIG. 21 (b) The grouting G is injected into the casing C below the surface of the PHC pile 10 to form a degree around the PHC pile 10. The car receiving sheet 30 and the reinforcing steel 40 are installed to the final excavation surface, As shown in FIG. 21 (b), it is also possible to install the car-receiving sheet 30 and the reinforcing steel 40 to the final excavation surface first, and then, after completion of the excavation, Hereinafter, grouting (G) is injected from the excavation surface around the PHC pile It can be prevented from leaking.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

1: masonry wall 10: PHC pile
20: longitudinal plate 21: fixing member
22: bolt hole 30: car seat
40: Reinforcing section steel 50:
60: Welt 70: Strut
80: Sulfur outflow blocking material B: bolt for coupling the car seat
C: Casing D: Perforation hole
N: Nut S: Filled sand

Claims (8)

A PHC pile with a longitudinal plate is used to form a main thermal type earth retaining wall in the ground. The PHC pile spaced apart from the PHC pile spaced apart by a tappet is bolted to the longitudinal plate using bolts for reinforcing steel, PHC piles having longitudinal plates attached in three rows on both sides of one side and one central part of the wall are installed at an arbitrary interval in consideration of pivoting, and the pivot hooks are welded to the longitudinal plates installed at one central part Wherein the PHC pile having longitudinal plates is joined to the car-receiving sheet with a bolt to simultaneously form an earth retaining wall and a water wall. delete The method according to claim 1,
The longitudinal plate of the PHC pile may have a cross-
And a bolt for bolt-joining the car-receiving sheet by using the reinforcing steel is formed in the shape of a plate having a rectangular plate shape or a plate shape in which both ends are bent in multi- And a fixing member such as a fixing steel bar or a stud is coupled to the back surface of the PHC pile to attach the PHC pile to the pile main body. A retaining method to simultaneously construct a water wall. A PHC pile having longitudinal plates attached in two or three rows at an arbitrary interval is inserted into the inside of the casing in consideration of the position of pivoting in the casing, while the casing is inserted into the ground at the location where the retaining wall is installed using an auger A step of forming an earth retaining wall body by repeating a process of discharging the casing to form a main heating type earth retaining wall body in the ground;
Filling concrete into the hollow portion of the PHC pile when the main thermal type earth retaining wall is formed;
A trenching step of excavating the inner ground of the earth retaining wall formed of the PHC pile to a predetermined depth;
A car-containing sheet installing step of forming a car wall by bolting the car-containing sheet to a longitudinal plate between optional PHC piles and neighboring PHC piles using reinforcing steel bars;
A step of attaching a brace to a longitudinal plate of each PHC pile to which a longitudinal plate is attached in three rows at a hooking position;
A wale and strut installation step of installing a wale on an upper portion of the brace and coupling the strut in a lateral direction to the wale so as to support the main thermal type earth retaining wall; And
And a repetitive finishing step of repeating the trenching step, the car-containing sheet-installing step, the step of setting the hooking step, the step of winding up the tie and the step of struting and then digging to the final excavation surface to complete the earth-
When the earth retaining wall is formed by attaching the soil discharge blocking material formed of an elastic material thicker than the gap between the perforation hole and the PHC pile on the side of the PHC pile in the longitudinal direction, when the inner ground of the earth retaining wall is excavated, Characterized in that the filling sand or soil is temporarily prevented from flowing into the excavation by a soil discharge blocking material and the car-receiving sheet prevents leakage of soil and ground water in the long term. A retaining method in which a car seat is bolted to form a retaining wall and a water wall at the same time. 5. The method of claim 4,
The method comprising the steps of: bonding a car-receiving sheet to a PHC pile having the longitudinal plate attached thereto by bolts to simultaneously form an earth retaining wall and a water-
When the final excavation layer is a permeable layer that is easy to drain out from the groundwater, groundwater at the bottom of the excavation wall is located higher than the excavation surface, so groundwater may be drained to the bottom of the final excavation surface due to the difference in hydraulic pressure. Wherein the reinforcing steel is used to bolt the car-receiving sheet up to the depth, and then the trench is filled with concrete to prevent water leakage. In the PHC pile with the longitudinal plate, The bolts are joined together to form the retaining wall and the water wall at the same time. 5. The method of claim 4,
The method comprising the steps of: bonding a car-receiving sheet to a PHC pile having the longitudinal plate attached thereto by bolts to simultaneously form an earth retaining wall and a water-
When the final excavation layer is a permeable layer with easy drainage of groundwater, since the groundwater at the back of the retaining wall is located higher than the excavation surface, the groundwater may leach to the bottom of the final excavation surface due to the difference in hydraulic pressure. Therefore, the PHC pile is inserted into the casing, Grooved into the casing to carry out the order around the PHC pile, and installing the car-receiving sheet to the final excavation surface with bolts using reinforcing steel to prevent water leakage. A retaining method in which a car seat is bolted to an attached PHC pile to simultaneously form an earth retaining wall and a water wall. 5. The method of claim 4,
The method comprising the steps of: bonding a car-receiving sheet to a PHC pile having the longitudinal plate attached thereto by bolts to simultaneously form an earth retaining wall and a water-
When the final excavation layer is a permeable layer that is easy to drain out from the groundwater, since the groundwater in the back of the earth retaining wall is located higher than the excavation surface, groundwater may be drained to the bottom surface of the final excavation surface due to the difference in hydraulic pressure. Is installed with bolts using reinforcement steel, and grouting is injected from the excavation surface around the PHC pile after the completion of the trenching to prevent water leakage. A retaining method in which a concrete sheet is bolted to form a retaining wall and a water wall at the same time. delete

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