KR102264250B1 - Block style reinforced soil retaining wall and constructing method thereof - Google Patents

Abstract

The block-type reinforced earth retaining wall of the present invention is constructed to form a surface structure, the rear end is embedded in the embankment part, and a plurality of blocks having longitudinal and transverse insertion grooves recessed in the plate surface; A plurality of reinforcing parts for supporting the block by forming a longitudinal member and a transverse member, respectively, respectively embedded in the longitudinal insertion groove and the transverse insertion groove, in a 'C' shape and embedded in the embankment part; ; a soil nail part inserted and buried so that an end thereof is exposed outside the cut part in contact with the embankment part, and one side of the reinforcement part and the other side of the reinforcement part adjacent to the reinforcement part are fastened to the exposed end part to support the reinforcement part; By including the configuration, there is an effect of increasing the efficiency of work by improving the workability while at the same time improving the economic feasibility by allowing the material to be used efficiently.

Description

Block STYLE REINFORCED SOIL RETAINING WALL AND CONSTRUCTING METHOD THEREOF

The present invention relates to the field of civil engineering, and more particularly, to a block-type reinforced earth retaining wall capable of improving economic feasibility by enabling efficient use of materials.

In general, nail nails are used for excavation support systems, maintenance of existing retaining walls, and construction of retaining walls required for excavation, retaining, reinforcement of natural and artificial slopes adjacent to railways and roads, and construction of civil engineering-related facilities such as underground structures and tunnels. is the absence of being

These soil-nails reduce the risk of cracking and collapsing of the excavated surface or adjacent ground in the case of a mixture of soil or soil and rock walls, which can easily collapse and crack. Safety measures for prevention are used and a series of reinforcement works are carried out through the excavation or cutting process. Construct the surface protection surface and drill the excavation back to resist tensile stress, shear stress, and bending moment of reinforcing bars or wires.

And, by inserting a nail into the slope of the cut part and then grouting it to form a reinforcing soil body, the shear resistance of the soft ground is improved to solve problems such as cracks or collapses that may occur in the excavated soft ground. to promote the stability of

When the nail installation is completed, it is connected to the block to support the block forming the block-type reinforcing earth retaining wall, and the end of the reinforcing part formed by assembling reinforcing bars in a grid shape is fastened with the end of the nail, resulting in the nail supporting the block. make it possible

However, in this conventional block-type reinforced earth retaining wall, the structure in which the end of the reinforcement part and the nail are fastened can support the pull-out resistance applied when the block is pushed toward the road, but applied when the block is pushed to the opposite side of the road. With respect to the compression resistance, there is a problem in that structural stability is lowered because the structure cannot properly support the block.

In addition, since one side is connected to the block and the other side has a structure in which reinforcing bars are formed in a grid shape and the other side is fastened to the nail, there is a problem in that the material cannot be used efficiently and thus economic efficiency is lowered.

The present invention has been devised to solve the above problems, so that materials can be used efficiently to increase economic feasibility, and at the same time, work efficiency can be increased by improving constructability, and reinforcement for supporting blocks A block type that improves the structural stability of a block-type reinforced earth retaining wall by allowing the reinforcement part to support the block firmly even when compression resistance as well as pulling-out resistance is applied to the reinforcement part when the end of the part is fastened to the nail part. It aims to provide a reinforced earth retaining wall.

A block-type reinforced earth retaining wall for achieving the object of the present invention as described above is constructed to form a surface structure, the rear end is embedded in the embankment part, and a plurality of blocks having longitudinal insertion grooves and transverse insertion grooves recessed in the plate surface; A plurality of reinforcing parts for supporting the block by forming a longitudinal member and a transverse member, respectively, respectively embedded in the longitudinal insertion groove and the transverse insertion groove, in a 'C' shape and embedded in the embankment part; ; a soil nail part inserted and buried so that an end thereof is exposed outside the cut part in contact with the embankment part, and one side of the reinforcement part and the other side of the reinforcement part adjacent to the reinforcement part are fastened to the exposed end part to support the reinforcement part; characterized by including.

Here, the small nail part may include a nail inserted into the cut part to be embedded, and a fastening part coupled to an end of the nail so that the end of the reinforcing part is fastened in a direction opposite to the nail.

In addition, the fastening part includes a nail head fastened to and fixed to an end of the small nail part, a ring-shaped fastening ring provided on an upper surface of the nail head and having a through hole formed in a direction perpendicular to the nail, and the through hole. A plurality of fastening bars inserted so that both ends are exposed to the outside of the fastening ring, fastening members respectively provided at both ends of the fastening bar and having a fastening hole formed in the center, and a plurality of fixed to the outer surface of the end of the reinforcing part inserted into the fastening hole It may include a fastening nut of

In addition, a tapered surface is formed on the inner surface of the nail head, the width of which is gradually reduced toward the end of the nail fastened to the nail head, and an outer surface of the nail is formed to be inclined to correspond to the tapered surface at the end of the nail. may be fixedly coupled.

In addition, the fastening nut is provided as a pair so that the free rotation is restricted by rotating in opposite directions while being fastened to the end of the reinforcing unit and in contact with each other, thereby maintaining the state fastened to the end of the reinforcing unit.

In addition, the fastening members are screwed to both ends of the fastening bar, respectively, and the fastening members provided on the right and left sides may be screwed in opposite directions.

In addition, the end of the fastening bar fastened to the fastening member may be screwed in contact with the outer surface of the reinforcing part fastened to the fastening hole formed in the fastening member until a state in which the reinforcing part is pressed.

In addition, the nail may be installed to be embedded by being inserted in a direction perpendicular to the slope formed in the cut portion.

A block-type reinforced earth retaining wall construction method for achieving the object of the present invention as described above, comprises the steps of performing a foundation excavation work of the ground to install the block; Installing a block in the ground on which the foundation excavation work is completed; installing a reinforcing part on the block; Installing a nail nail part in the cut portion; connecting the reinforcing part and the small nail part; Laying and compacting the reinforcing soil in the fill part; characterized by including.

As described above, the block-type reinforced earth retaining wall according to the present invention has the effect of increasing the efficiency of work by improving the workability while at the same time improving the economic feasibility by allowing the material to be used efficiently.

In addition, the structural stability of the block-type reinforced earth retaining wall is improved by allowing the reinforcement part to firmly support the block even when compression resistance as well as extraction resistance is applied to the reinforcement part while the end of the reinforcement part supporting the block is fastened to the nail part. There is an effect that can be improved.

1 is a side view showing the structure of a block-type reinforced earth retaining wall as viewed from the side according to an embodiment of the present invention;
2 is a plan view showing a structure looking down on a block-type reinforced earth retaining wall according to an embodiment of the present invention;
3 is a plan view illustrating a connection structure of a reinforcement part and a nail nail part of a block-type reinforced earth retaining wall according to an embodiment of the present invention;
4 is a construction flowchart sequentially describing the process of constructing a block-type reinforced earth retaining wall according to an embodiment of the present invention.

Hereinafter, a block-type reinforced earth retaining wall according to an embodiment of the present invention will be described in detail based on the accompanying drawings.

1 is a side view showing the structure of a block-type reinforced earth retaining wall according to an embodiment of the present invention, as viewed from the side, and FIG. 2 is a block-type reinforced earth retaining wall according to an embodiment of the present invention. 3 is a plan view illustrating a connection structure of a reinforcement part and a nail nail part of a block-type reinforced earth retaining wall according to an embodiment of the present invention, and FIG. 4 is a block-type reinforced earth retaining wall according to an embodiment of the present invention. This is a construction flow chart that describes the construction process sequentially.

As shown in these drawings, the block-type reinforced earth retaining wall according to the present invention is built to form a surface structure, the rear end is buried in the embankment part, and a longitudinal insertion groove 110 and a transverse insertion groove 120 are formed on the plate surface. A plurality of recessed blocks 100 and; The longitudinal member 210 and the transverse member 220 respectively embedded in the longitudinal insertion groove 110 and the transverse insertion groove 120 are formed in a 'C' shape as a whole, and are buried in the filling part. A plurality of reinforcing parts 200 to support the block 100 by being; The reinforcing part 200 is inserted and buried so that the end is exposed outside the cut part in contact with the embankment part, and one side of the reinforcement part 200 and the other side of the adjacent reinforcement part are fastened to the exposed end part to the outside. It is configured to include a nail nail part 300 for supporting the.

The block 100 is formed of a concrete material and is a structure constructed by matching rows and columns to form a surface structure. In the upper plate surface, longitudinal insertion grooves 110 and transverse insertion grooves 120 are recessed to a predetermined depth.

The longitudinal member 210 of the reinforcing part 200 is inserted and seated in the longitudinal insertion groove 110 , and the transverse member 220 of the reinforcing part 200 is inserted and seated in the lateral insertion groove 110 . As a result, the reinforcing part 200 allows the block 100 to be supported in a built-up form.

It is preferable to quickly drain through the drainage holes 130 formed in the block 100 in case of rain by forming drainage holes 130 filled with gravel for drainage in a plurality of places on the block surface of the block 100, respectively. .

The reinforcing part 200 is a longitudinal member 210 and a transverse member 220 that are respectively embedded in the longitudinal insertion groove 110 and the transverse insertion groove 120 are formed in a 'C' shape as a whole, so that the soil behind It serves to support the block 100 by being buried inside the.

The longitudinal insertion groove 110 and the transverse insertion groove 120 are integrally and continuously formed by bending the reinforcing bar itself, and the diameter thereof is the longitudinal insertion groove 110 and the transverse insertion groove formed in the block 100 ( It is effective to be formed to have a length similar to the width of 120 to prevent the reinforcing part 200 from flowing in a state in which it is fastened with the block 100 .

And, the end of the longitudinal member 210 of the reinforcing part 200 is fixedly coupled to the fastening part 320 of the nail nail part 300, which will be described later, so that the block 100 can be more firmly supported. desirable.

In addition, since the reinforcing part 200 is formed in a 'C' shape as a whole by the longitudinal member 210 and the transverse member 220, materials can be saved compared to the conventional lattice-shaped reinforcing part 200. can have an effect.

On the other hand, the small nail part 300 includes a nail 310 inserted and embedded into the cut part, and an end of the reinforcing part 200 in a direction opposite to the nail 310 by being coupled to the end of the nail 310 . It is composed of a fastening part 320 to be fastened.

The nail 310 is a bar-shaped member having a certain length, and the end is sharply formed so that the nail 310 can be easily inserted when the nail 310 is inserted into the cut portion, depending on the strength of the ground forming the cut portion. Allow the length to be determined so that the bearing capacity can be adjusted.

The nail 310 is inserted into the cut part and connected to the block 100 by the reinforcing part 200 to increase the surface friction force when supporting the block 100 to improve the support force, so that a plurality of protrusions are patterned on the outer surface. It is effective to be formed to achieve

The nail 310 is inserted in a direction perpendicular to the slope formed in the cut part and installed to be embedded in the cut part, so that when the attractive force in the horizontal direction by the reinforcing part 200 acts toward the nail 310, the nail 310 is cut. It is effective to prevent easy departure from wealth.

The fastening part 320 includes a nail head 321 fastened to and fixed to the end of the small nail part 300 , and a ring provided on the upper surface of the nail head 321 and having a through hole formed in a direction perpendicular to the nail 310 . A fastening ring 322 of the shape, a fastening bar 323 which is inserted into the through hole so that both ends thereof are exposed to the outside of the fastening ring 322, is provided at both ends of the fastening bar 323 and is fastened to the center It is configured to include a fastening member 324 having a ball formed therein, and a plurality of fastening nuts 325 fixed to the outer surface of the end of the reinforcing part 200 inserted into the fastening hole.

The end of the nail 310 is coupled to one side of the nail head 321 and the coupling member 324 to which the reinforcement part 200 is coupled to the other side is fastened to the coupling bars 323 provided on both sides, resulting in the nail ( 310) and the reinforcing unit 200 are interconnected.

The fastening ring 322 is fixedly coupled to one end of the nail head 321 , and a through hole is formed in the center thereof in a direction perpendicular to the nail head 321 .

The fastening bar 323 is inserted into the through hole formed in the fastening ring 322 to be rotatably installed, and both ends of the fastening bar 323 protrude to the outside of the fastening ring 322 to be attached to the fastening member 324 . It is preferable to be formed to have a length sufficient to be sufficiently fastened.

Both ends of the fastening bar 323 protruding to the outside of the fastening ring 322 must be formed to have a length sufficient to be sufficiently fastened to the fastening member 324, and the reinforcement part inserted into the fastening hole of the fastening member 324 ( By strongly pressing 200 , the reinforcing unit 200 inserted into the fastening hole is firmly pressed to prevent the reinforcing unit 200 from flowing with respect to not only pulling resistance but also compression resistance.

On the inner surface of the nail head 321, a tapered surface 321a whose width is gradually reduced toward the end of the nail 310 fastened to the nail head 321 is formed, and at the end of the nail 310, the tapered surface ( 321a) and a tapered member 321b having an inclined outer surface is fixedly coupled thereto.

Therefore, even when pulling resistance is applied to the nail 310 , the taper member 321a provided at the end of the nail 310 presses the end of the nail 310 inward along the radial direction of the end of the nail 310 . There is an effect that can prevent the nail 310 from being absolutely separated from the nail head 321 .

The fastening member 342 is a member formed in a ring shape having a predetermined height so that a fastening hole is formed through the center so that the reinforcing part 200 can be inserted and connected, and this fastening member 324 is at both ends of the fastening bar 323 . It is effective that each screw is fastened, and the fastening members 324 provided on the right and left are screwed in opposite directions to each other.

The fastening members 324 screwed to the right and left sides of the fastening bar 323 are screwed in opposite directions to each other, so that the fastening members 324 can be simultaneously fastened to both ends of the fastening bar 323, thereby improving workability. has the effect of increasing it.

Then, the end of the fastening bar 323 fastened to the fastening member 324 is in contact with the outer surface of the reinforcing part 200 fastened to the fastening hole formed in the fastening member 324 to press the reinforcing part 200 . Tighten the screws until

By screwing the fastening member 324 to the fastening member 324 until the fastening bar 323 is in a state of pressing the outer surface of the reinforcing part 200 , the reinforcing part 200 is subjected to compression resistance as well as pulling-out resistance to the reinforcing part 200 . ), since both ends of the fastening bar 323 are firmly pressed, there is an effect angle that can enable stable support of the block 100 .

The fastening nut 325 is provided in a pair and rotates in opposite directions while being fastened to the end of the reinforcing unit 200 and in contact with each other so that free rotation is constrained, so that the state fastened to the end of the reinforcing unit 200 is to keep it

The fastening nut 325 is rotated in opposite directions so that mutual free rotation is restrained so that the reinforcing part 200 is not loosened even when an external force is applied, so that the reinforcing part 200 can be maintained in a state inserted into the fastening hole of the fastening member 324 .

The process of constructing a block-type reinforced earth retaining wall according to an embodiment of the present invention having the configuration as described above is as follows.

First, the construction section is excavated after receiving the construction section by surveying. If the reinforced earth retaining wall foundation section is soft ground, replace it with an appropriate material and then conduct a bearing capacity test by structural calculation. .

And, in order to prevent uneven settlement of the retaining wall foundation, the block 100 is installed after the concrete foundation is placed on the ground where the excavation construction has been performed, and the drainage aggregate such as gravel is filled in the drainage hole 130 of the block 100. do.

When the installation of the block 100 is completed, the longitudinal member 210 and the transverse member 220 of the reinforcing part 200 are respectively formed in the longitudinal insertion groove 110 and the transverse insertion groove 120 of the block 100 , respectively. Insert and install to be accommodated in

Then, after inserting and burying the nail 310 of the small nail part 300 in the cut part, the end of the reinforcement part 200 is connected to the fastening part ( It is fastened to the fastening member 324 of the 320, and at this time, both ends of the fastening bar 323 press the outer surface of the reinforcing part 200, so that even if compression resistance as well as pulling resistance is applied, the reinforcing part 200 blocks ( 100) to be firmly supported.

When the installation of the block 100, the reinforcement part 200, and the nail nail part 300 is completed by the above-described process, the reinforcement soil is filled so that the rear end of the block 100 and the reinforcement part 200 are buried by the background soil. The construction of the block-type reinforced earth retaining wall is completed by proceeding with the compaction work after laying on the wall.

The block-type reinforced earth retaining wall according to an embodiment of the present invention having such a configuration can increase economic feasibility by efficiently using materials, and at the same time improve workability to increase work efficiency.

Since the above has only been described with respect to a part of a preferred embodiment that can be implemented by the present invention, the scope of the present invention as noted should not be construed as being limited to the above one embodiment, and the It will be said that the technical idea of the invention and the technical idea having its roots are all included in the scope of the present invention.

100: block 110: longitudinal insertion groove
120: transverse insertion groove 130: drain hole
200: reinforcing part 210: longitudinal member
220: transverse member 300: nail part
310: nail 320: fastening part
321: nail head 321a: tapered surface
321b: tapered member 322: fastening ring
323: fastening bar 324: fastening member
325: fastening nut

Claims (9)

A plurality of blocks 100 constructed to form a surface structure, the rear end of which is buried in the embankment, and in which the longitudinal insertion grooves 110 and the transverse insertion grooves 120 are recessed in the plate surface;
The longitudinal member 210 and the transverse member 220 respectively embedded in the longitudinal insertion groove 110 and the transverse insertion groove 120 are formed in a 'C' shape as a whole, and are buried in the filling part. A plurality of reinforcing parts 200 to support the block 100 by being;
The reinforcing part 200 is inserted and buried so that the end is exposed outside the cut part in contact with the embankment part, and one side of the reinforcement part 200 and the other side of the adjacent reinforcement part are fastened to the exposed end part to the outside. a nail nail part 300 for supporting the; including,
The small nail part 300 includes a nail 310 that is inserted into and embedded in the cut part, and the reinforcing part 200 in a direction opposite to the nail 310 by being coupled to an end of the nail 310 . It is composed of a fastening part 320 so that the end is fastened,
The fastening part 320 includes a nail head 321 fastened to and fixed to the end of the small nail part 300 , and is provided on the upper surface of the nail head 321 in a direction perpendicular to the nail 310 . A ring-shaped fastening ring 322 having a through hole formed therein, a fastening bar 323 inserted into the through hole so that both ends thereof are exposed to the outside of the fastening ring 322, and both ends of the fastening bar 323 It includes a fastening member 324 each provided with a fastening hole in the center, and a plurality of fastening nuts 325 fixed to the outer surface of the end of the reinforcing part 200 inserted into the fastening hole,
The fastening member 324 is screwed to both ends of the fastening bar 323, respectively, and the fastening members 324 provided on the right and left are screwed in opposite directions, and are fastened to the fastening member 324. The end of the fastening bar 323 is screwed until it comes into contact with the outer surface of the reinforcing part 200 fastened to the fastening hole formed in the fastening member 324 to press the reinforcing part 200 . becomes,
A tapered surface 321a whose width is gradually reduced toward the end of the nail 310 fastened to the nail head 321 is formed on the inner surface of the nail head 321 , and the end of the nail 310 is formed on the inner surface of the nail head 321 . A block-type reinforcing earth retaining wall, characterized in that the tapered member (321b) having an inclined outer surface to correspond to the tapered surface (321a) is fixedly coupled to the wall. delete delete delete According to claim 1,
The fastening nut 325 is provided as a pair and is fastened to the end of the reinforcing unit 200 and rotated in opposite directions while in contact with each other to restrict free rotation, thereby fastening to the end of the reinforcing unit 200. A block-type reinforced earth retaining wall, characterized in that it is maintained in an established state. delete delete According to claim 1,
The nail (310) is a block-type reinforced earth retaining wall, characterized in that it is installed to be embedded in a direction perpendicular to the slope formed in the cut part. A block-type reinforced earth retaining wall construction method according to claim 1, comprising:
performing a foundation excavation work of the ground to install the block 100;
Installing a block 100 in the ground on which the foundation excavation work is completed;
In the longitudinal insertion groove 110 and the transverse insertion groove 120 of the block 100, respectively, the longitudinal member 210 and the transverse member 220 are formed in a 'C' shape as a whole, inserting and installing the reinforcing part 200 to support the block 100;
installing the cut part so that the end of the nail nail part 300 is exposed;
One side of the reinforcing part 200 and the other side of the adjacent reinforcing part are fastened to the end of the small nail part 300 exposed to the outside of the cut part, so that the small nail part 300 supports the reinforcement part 200 . installing to do so;
Laying and compacting the reinforcing soil in the fill part;
Block-type reinforced soil retaining wall construction method, characterized in that it includes.

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