KR20080108863A - A constructing method of reinforcing strip for supporting reinforced earth wall - Google Patents

A constructing method of reinforcing strip for supporting reinforced earth wall Download PDF

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Publication number
KR20080108863A
KR20080108863A KR1020070056950A KR20070056950A KR20080108863A KR 20080108863 A KR20080108863 A KR 20080108863A KR 1020070056950 A KR1020070056950 A KR 1020070056950A KR 20070056950 A KR20070056950 A KR 20070056950A KR 20080108863 A KR20080108863 A KR 20080108863A
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KR
South Korea
Prior art keywords
fiber reinforcement
shaped fiber
band
strip
wall
Prior art date
Application number
KR1020070056950A
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Korean (ko)
Inventor
이정수
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이정수
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Publication date
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Priority to KR1020070056950A priority Critical patent/KR20080108863A/en
Publication of KR20080108863A publication Critical patent/KR20080108863A/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
    • E02D29/0233—Retaining or protecting walls comprising retention means in the backfill the retention means being anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/025—Retaining or protecting walls made up of similar modular elements stacked without mortar
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0258—Retaining or protecting walls characterised by constructional features
    • E02D29/0266—Retaining or protecting walls characterised by constructional features made up of preformed elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

A construction method of a strip type fiber reinforcement material is provided to prevent the front end of a strip type fiber reinforcement material from loosening on a connection with a wall, to make installation possible without the work of pulling a strip type fiber reinforcement material, and to reduce the number of strip type fiber reinforcement materials connected to a retaining wall and to hold a retaining wall strongly to be balanced, and to improve bearing resistance between the soil and a strip type fiber reinforcement material. A construction method of a strip type fiber reinforcement material comprises the steps of inserting the front end of a strip type fiber reinforcement material(10) to a connector(20) projected to the rear of a panel(P) forming a wall of a reinforced earth retaining wall and laying at the rear of a reinforced earth body(30), and then performing soil compaction, and installing a shape retainer(100) to be bent at the appointed angle while erecting the strip type fiber reinforcement material to the connector.

Description

Shape retaining zone of strip-shaped fiber reinforcement for supporting retaining wall of reinforced earth and construction method of strip-shaped fiber reinforcement using same {A Constructing method of reinforcing strip for supporting reinforced earth wall}

1 is a perspective view showing a connection state of a conventional retaining wall panel and a strip-shaped fiber reinforcement,

Figure 2 is a perspective view showing a connection state of the conventional retaining wall wall frame and the strip-shaped fiber reinforcement,

3 is a perspective view showing a state in which the front end of the band-shaped fiber reinforcing material folded in half width by using the shape holding sphere according to an embodiment of the present invention, bending,

4 is a perspective view of the front end of the strip-shaped fiber reinforcing material anchored to the connecting ring of the retaining wall panel using the shape holding sphere of the embodiment shown in FIG.

Figure 5 is a state of construction and enlarged main portion of the belt-shaped fiber reinforcement for explaining a method of installing the belt-shaped fiber reinforcement using the shape holding sphere of the present invention,

Figure 6 is a perspective view showing another construction state of the strip-shaped fiber reinforcement,

Figure 7 is a perspective view showing a method of installing the front end of the strip-shaped fiber reinforcement to the retaining wall block using the shape holding sphere of the present invention,

8 is a perspective view and an enlarged view illustrating a method of installing the front end of the strip-shaped fiber reinforcement on the retaining wall wall frame using the shape holding zone of the present invention;

9 is a perspective view and a bending state of the shape holding zone showing another embodiment of the present invention;

10 is a perspective view of a shape retaining zone according to another embodiment of the present invention;

11 is a perspective view of a shape retaining zone according to still another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

P: Panel B: Block

F: Wall frame 10: Band-shaped fiber reinforcement

20: connection ring 30: reinforcement body

40: bending part 100,100 ': form retention zone

110,110 ': Clip portion 120: Bending portion

130: connection

The present invention relates to a shape retaining zone of a band-shaped fiber reinforcement for supporting a reinforced soil retaining wall and a method of constructing a band-shaped fiber reinforcement using the same, in detail, in the construction of a reinforced earth retaining wall for supporting a wall of a reinforcement earth retaining wall using a band-shaped fiber reinforcement, By effectively preventing the front end of the fiber reinforcement from loosening at the connection part with the wall, it is possible to prevent the retaining wall part from being full or partial detachment, and without having to pull the band-shaped fiber reinforcement. It is possible to install the strip-shaped fiber reinforcement, and the rear end of the strip-shaped fiber reinforcement can exert passive supporting resistance in the standing state without using additional reinforcing bars or other temporary fixing piles.

1 is a perspective view showing a connection state between a conventional retaining wall panel and a strip-shaped fiber reinforcement, and in the case of supporting the panel P forming the retaining wall wall using the strip-shaped fiber reinforcement 1, The tip had to be hung to balance the four strands using two connecting pins (3) protruding on both sides of the rear surface of the panel (P) using a connecting pin (4) and separated from the panel (2) by a predetermined distance. In the state where the reinforcing bar (5) is fixed to the rear of the reinforcement body so as not to move with the temporary fixing pile (6), the rear end portion of the strip-shaped fiber reinforcement (1) is hung in the reinforcing bar (5) continuously and zigzag-shaped, In order to ensure that the front and rear ends of the strip-shaped fiber stiffeners are in a tight state, the temporary fixing nails (not shown) are kept to be pulled after 3 to 5 workers are mobilized to pull the strip-shaped fiber stiffeners. The work had to be carried to the driving-type fiber reinforcement.

This is because four strands are required at two points on both sides of the panel (P) for balanced connection of the strip-shaped fiber reinforcement with respect to the panel in the method of bending and connecting the strip-shaped fiber reinforcement to be in a lying state. This is because when the front and rear ends of the reinforcement material are not kept in a tight state and are embedded in the reinforcement soil in a loose state, the panel 1 is pushed forward by the earth pressure of the reinforcement soil, causing the retaining wall surface to be filled.

2 is a view illustrating a connection state between a retaining wall wall frame and a strip-shaped fiber reinforcement in the related art, in which the connecting bracket 3 'and the connecting pin 4 are formed even when the wall forming the retaining wall surface is a metal wall frame made of lattice. Reinforcing bars (5) is used to continuously install the strip-shaped fiber reinforcement (1) in a zigzag manner, even in this case had to be carried out pulling the same strip-shaped fiber reinforcement in the construction of the panel shown in FIG.

The pulling work of the above-mentioned band-shaped fiber reinforcement has a problem that the work force is deteriorated because much manpower is required as well as the pulling work takes a lot of physical strength and time, and the back filling soil is not compacted immediately after the pulling work. There was a problem such that the pulled state is released.

In addition, in the conventional method for installing the band-shaped fiber reinforcement as described above, the front and rear ends of the band-shaped fiber reinforcement are in a lying state, that is, two strands of the band-shaped fiber reinforcement are connected to one connection ring, and both sides of the folded portion. Overlapping in this certain interval increases the laying density of the strip-shaped fiber reinforcement, resulting in an increase in material costs due to excessive use of the strip-shaped fiber reinforcement.

In addition, due to the frictional interference between the strip-shaped fiber reinforcement installed too densely, the soil was separated from the upper and lower soils, the soil sliding on the strip-shaped fiber reinforcement occurred, and the band-shaped fiber reinforcement piled up each other Since the frictional force between the strip-shaped fiber reinforcement and the soil does not occur, the durability of the reinforced soil retaining wall is also known to be inferior.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention in the construction of a reinforced earth retaining wall for supporting the wall of the reinforcement earth retaining wall using a band-shaped fiber reinforcement, the front end portion of the band-shaped fiber reinforcement and the wall It is possible to effectively prevent the occurrence of loosening at the connection part of the joint, and it is possible to install the band-shaped fiber reinforcement without several people pulling the band-shaped fiber reinforcement, and the quantity of connection of the band-shaped fiber reinforcement to the retaining wall wall (density) The retaining wall wall can be firmly and firmly balanced, while maintaining the laying density per unit width of the strip-shaped fiber reinforcement, effectively improving the bearing resistance between the soil and the strip-shaped fiber reinforcement, and the rear end of the strip-shaped fiber reinforcement is additionally reinforced. Manual, standing up, without the use of any other temporary fixing piles To provide a support construction method of a band-like fiber reinforcement and improvement in resistance to exhibit the form of supporter of the band-shaped fiber reinforcements used in this construction method.

In order to achieve the above object, the present invention inserts the front end of the strip-shaped fiber reinforcement into a connecting ring protruding from the back surface of the panel or block or wall frame forming the wall of the reinforcement soil retaining wall, and installs it to the rear of the reinforcement soil and performs soil compaction thereon. The present invention provides a method of constructing a strip-shaped fiber reinforcing member provided with a shape retaining member so as to maintain a bent state at a predetermined angle while the strip-shaped fiber reinforcing material is placed in a portion fitted to the connecting ring.

Preferably, the strip-shaped fiber reinforcement is continuously installed in a zigzag state, and bent to a predetermined curvature so that the band-shaped fiber reinforcement can be exerted in a state in which the strip-shaped fiber reinforcement is set up in addition to the connection part of the retaining wall wall. The shape holder is installed to maintain the state.

More preferably, the strip-shaped fiber reinforcement is folded at half and the front end and the rear end thereof are bent at a predetermined angle and curvature by the shape holding sphere.

The present invention also provides a shape retaining zone used in the above-described method for constructing a strip-shaped fiber reinforcement, wherein the clip portion formed of a metal plate having plasticity and fitted with a strip-shaped fiber reinforcement is formed in a cross-sectional shape. Provided is a shape retaining portion formed in the bending portion that can be bent at any angle.

In another embodiment of the present invention, the shape holding sphere is bent at a predetermined angle to form a substantially L-shape, and the clip portion into which the band-shaped fiber reinforcement is fitted has a cross-sectional shape.

In another embodiment of the present invention, the shape retaining member is composed of two clip portions which respectively inquire at both sides of the bending portion of the strip-shaped fiber reinforcement and connecting portions connected diagonally between the clip portions.

Hereinafter, with reference to the accompanying drawings, preferred embodiments that do not limit the present invention will be described in detail.

3 is a perspective view illustrating a state in which the front end of the strip-shaped fiber reinforcement is folded in half width by using the shape holding tool according to an embodiment of the present invention, and FIG. 4 is a shape holding tool of the embodiment shown in FIG. 5 is a perspective view of a state in which the tip of the strip-shaped fiber reinforcement is anchored to the connecting ring of the retaining wall panel, and FIG. 5 illustrates the construction of the strip-shaped fiber reinforcement for explaining a method of installing the strip-shaped fiber reinforcement using the shape holding sphere of the present invention. It is a state diagram and a main part enlarged view.

As shown in Figures 3 to 5 the construction method of the present invention by inserting the front end of the strip-shaped fiber reinforcement (10) to the connecting ring 20 protruding to the back of the panel (P) forming the wall of the reinforced earth retaining wall reinforcement earth body Formed to the rear of the (30) and to perform a compaction on it, the shape retainer to maintain the bent at a predetermined angle in a state in which the band-shaped fiber reinforcement (10) is placed on the portion fitted to the connecting ring (20) 100 is installed.

Preferably, the strip-shaped fiber reinforcement 10 is continuously installed in a zigzag state as shown in the construction state diagram of FIG. 5, and a portion of the connecting ring 20 of the panel P constituting the retaining wall wall, as well as the rear of the reinforced earth 30. The bending portion 40 is also provided with a shape holding member (100, 100 ') for maintaining a bent state with a predetermined curvature so as to exert a passive support resistance force in the state in which the band-shaped fiber reinforcement (10) is standing.

In the present invention, the band-shaped fiber reinforcement 10 is applied to all general band-shaped fiber reinforcement, but in particular, it is preferable to use a band-shaped fiber reinforcement according to the applicant's patent No. 0660356, which is a plurality of polyester fiber bundles A strip-shaped fiber reinforcement 10 is disposed in parallel and coated with a polyethylene resin on the outside thereof, and a folding groove 16 is formed to have a thickness thinner than another portion along the longitudinal direction of the strip-shaped fiber reinforcement 10, and the folding groove 16 has a strip-like shape. It is formed on both the front and the back of the fiber reinforcement 10 is to be folded in any direction, front and back.

3 to 5, the shape retention zone 100 according to the first embodiment of the present invention is injection molded with a synthetic resin material, which is a predetermined angle (90 ° in the case of the shape retention zone shown in the drawing) It is bent to form a substantially L-shaped, the inside of the clip portion 110 is inserted into the clip-shaped reinforcement 10 is formed of the c cross-sectional shape, the shape retention zone 100 is a drawing of the band-shaped fiber reinforcement (10) When inserted in the folded state in half width as shown in the band-shaped fiber reinforcement (10) is to maintain the folded state in half width, and also be able to maintain the bent state at approximately right angles even if the hand is released, thereby As shown in FIG. 4, the front end of the strip-shaped fiber reinforcement 10 is inserted into the connecting ring 20 on the rear surface of the panel P forming the retaining wall wall, and it is possible to bend and install the backfill soil. Since this state is maintained as it is, there is no need to pull the belt-shaped fiber reinforcement tightly by using manpower or other pulling mechanisms as in the conventional construction method, and the panel which is the folded portion of the band-shaped fiber reinforcement, in particular, the tip of the band-shaped fiber reinforcement. Since the connection part with (P) is installed without loosening, it is possible to effectively prevent the occurrence of local full load phenomenon of the retaining wall wall after the completion of construction, so it can be eliminated even during construction.

On the other hand, as shown in Figure 5, when the continuous installation of the strip-shaped fiber reinforcement 10 in a zigzag form, the shape retention zone (100 ') is also installed in the bending portion 40 of the rear end of the strip-shaped fiber reinforcement (10), this form The holding tool 100 ′ may be formed in an arc shape having a predetermined radius of curvature, and spaced apart at regular intervals from two shape holding tools 100 used at the front end portion thereof to form a substantially right angle at the rear end of the strip-shaped fiber reinforcement 10. By bending twice to achieve the belt-shaped fiber reinforcement (10) to maintain the standing state to be embedded in the reinforcement soil to retain the passive support resistance to ensure effective construction in the case of not being able to sufficiently secure the backfill length of the reinforcement soil can do.

In addition, in the construction drawing shown in FIG. 5, the band-shaped fiber reinforcement 10 is not connected to the connection ring 20 of the adjacent panel P with respect to the connection ring 20 formed on both sides of the rear surface of each panel P, respectively. To insert it into the rear of the reinforcement earth, but the present invention is not limited to this, but is shown in Figure 6 in conjunction with the connecting ring 20 of the adjacent panel (P) forming the retaining wall wall as shown in Figure 6 When the reinforcing material 10 is installed together with the reinforcement soil placed behind the reinforcing soil, the same tensile force is applied between the adjacent panels P, so that local distribution and separation of the panel forming the retaining wall may be effectively prevented. Of course.

On the other hand, in the case of inserting the band-shaped fiber reinforcement in connection with the connection ring of the adjacent panel as in the construction method of Figure 6 it is preferable not to link two or more connecting rings, because the connection is caught on both ends of the band-shaped fiber reinforcement It is because there is a possibility that full load is applied to the hook side because the tensile force is applied at right angles to the panel surface, but the tensioning force is not applied at right angles to the connecting side caught in the middle portion of the fiber reinforcement.

In the present invention, the retaining wall wall supported by the strip-shaped fiber reinforcement is not limited to the type of panel P described and illustrated in the above-described embodiment, but the retaining wall block B as shown in FIG. Not only can be applied to the lattice-shaped metal wall frame (F) as shown in the above, it is also possible to apply the same as in the construction method of the panel described above to hang the band-shaped fiber reinforcement to connect with the adjacent block. .

9 is a perspective view and a bending state of the shape holder according to the second embodiment of the present invention. The shape holder 100 according to the present embodiment is made of a metal plate having plasticity and has a band-shaped fiber inside. The clip portion 110 into which the reinforcing material 10 is fitted consists of a c cross-sectional shape, and a bending portion 120 that can be bent at an arbitrary angle is formed in the middle portion of the clip portion 110. Corrosion-resistant stainless steel sheet (0.1 ~ 1mm thickness) is formed by press working and the bending part 120 is formed by forming a plurality of lines of corrugation 122 along the width direction by bending easily by hand like a stainless steel corrugated pipe It is possible to keep the state as it is.

10 is a view showing a shape retaining zone according to another embodiment of the present invention. The shape retaining zone 100 according to the present embodiment has two clip portions 110 and 110 which respectively bite both sides of bending portions of the strip-shaped fiber reinforcement 100. ') And the connecting portion 130 connected diagonally between the clip portion (110,110').

Although the shape retaining zone of the embodiment shown in FIG. 10 is manufactured using a steel wire, the present invention is not limited thereto and may be manufactured using a steel sheet or a synthetic resin as shown in FIG. 11.

In addition, in the case of making a plate using a steel sheet or synthetic resin as shown in Figure 11 formed a plurality of clips (110, 110 ') on both sides of the connecting portion 130, respectively, the clip portion at a position corresponding to the desired bending angle It is preferable to fit both ends of the bent portion of the strip-shaped fiber reinforcement (10).

As described above, the present invention uses a simple, easy-to-install shape retainer in the construction method of the reinforced earth retaining wall that supports the wall of the reinforced earth retaining wall using the band-shaped fiber reinforcement, so that the tip of the band-shaped fiber reinforcement is loosened at the connection part with the wall. The load can be effectively prevented and the bending part of the rear end of the strip-shaped fiber reinforcement can be maintained to maintain a predetermined curvature. Not only can it be installed, but it can also strengthen the retaining capacity of the retaining wall wall, while it can reduce the number of connection of the strip-shaped fiber reinforcement to the retaining wall wall and hold the retaining wall in a balanced manner, and optimize the laying density per unit width of the strip-shaped fiber reinforcement. Between soil and strip-shaped fiber reinforcement Improved resistivity and reduced material cost by reducing the requirement of the band-shaped fiber reinforcement, and it is possible to install the band-shaped fiber reinforcement without many people pulling the band-shaped fiber reinforcement as in the conventional construction method. Therefore, labor cost and construction cost reduction and construction period can also have a useful effect.

Claims (7)

The front end of the strip-shaped fiber reinforcement is inserted into the panel, block or wall forming the wall of the reinforcement soil retaining wall, and is installed to the rear of the reinforcement soil, and the soil is compacted thereon. Construction method of the band-shaped fiber reinforcement, characterized in that to install the shape retaining portion to maintain the bent at a predetermined angle in the state in which the band-shaped fiber reinforcement is fitted to the connecting ring. The method according to claim 1, The belt-shaped fiber reinforcement is continuously installed in a zigzag state, and in addition to the connection part of the retaining wall wall, the band-shaped fiber reinforcement is bent at a predetermined curvature so that the band-shaped fiber reinforcement can be exerted in a state where the band-shaped fiber reinforcement is standing. A method of constructing a strip-shaped fiber reinforcement, characterized in that the shape retaining zone is installed so as to. The method according to claim 2, The band-shaped fiber reinforcing material is the front end and the rear end is folded in half width to maintain the shape of the band-shaped fiber reinforcement characterized in that it is bent at a predetermined angle and curvature by the shape holding sphere. The method according to claim 2, The front end of the band-shaped fiber reinforcement is a method of constructing a band-shaped fiber reinforcement, characterized in that is fitted in conjunction with the connecting ring formed in the panel, block or wall frame of the adjacent wall. As a shape holding zone used in the construction method of claim 1, Reinforcement earth retaining wall support is characterized in that the clip portion made of a metal plate having a plastic material and the inside of the clip-shaped fiber reinforcement is fitted into the cross-sectional shape, the bending portion which can be bent at an arbitrary angle in the middle portion of the clip portion. Form retention zone of strip-shaped fiber reinforcement for As a shape holding zone used in the construction method of claim 1, The shape of the strip-shaped fiber reinforcement for supporting the retaining wall retaining wall, characterized in that the bent at a predetermined angle to form a generally L-shaped, the clip portion into which the band-shaped fiber reinforcement is fitted. As a shape holding zone used in the construction method of claim 1, A shape retaining zone of a strip-shaped fiber reinforcement for supporting a reinforced soil retaining wall, characterized in that it consists of two clip portions which respectively inquire at both sides of the bending portion of the strip-shaped fiber reinforcement, and a connection portion connected diagonally between the clip portions.
KR1020070056950A 2007-06-11 2007-06-11 A constructing method of reinforcing strip for supporting reinforced earth wall KR20080108863A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101068943B1 (en) * 2009-07-14 2011-09-30 (주)대한콜크 Belt Type Extile Reinforcement and Method thereof
KR101231040B1 (en) * 2011-12-26 2013-02-07 강석조 Vegetative panel and construction and repair method retaining wall for planting using this
KR101485181B1 (en) * 2013-04-29 2015-01-23 (주)대한콜크 Panel for vertical wall and Afforestation apparatus
KR102546083B1 (en) * 2022-04-25 2023-06-22 공학봉 Retaining wall using strip and its construction method using thereof
KR102598492B1 (en) 2023-08-11 2023-11-06 주식회사 구마에스앤씨(S＆C) Panel type reinforced soil retaining wall structure and its construction method
KR102618678B1 (en) * 2022-12-26 2023-12-28 주식회사 한포스 Placementing Methods of Reinforcing strip of retaining wall

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101068943B1 (en) * 2009-07-14 2011-09-30 (주)대한콜크 Belt Type Extile Reinforcement and Method thereof
KR101231040B1 (en) * 2011-12-26 2013-02-07 강석조 Vegetative panel and construction and repair method retaining wall for planting using this
KR101485181B1 (en) * 2013-04-29 2015-01-23 (주)대한콜크 Panel for vertical wall and Afforestation apparatus
KR102546083B1 (en) * 2022-04-25 2023-06-22 공학봉 Retaining wall using strip and its construction method using thereof
KR102618678B1 (en) * 2022-12-26 2023-12-28 주식회사 한포스 Placementing Methods of Reinforcing strip of retaining wall
KR102598492B1 (en) 2023-08-11 2023-11-06 주식회사 구마에스앤씨(S＆C) Panel type reinforced soil retaining wall structure and its construction method

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