KR20220161795A - Connecting structure of reinforced wall and constructing method thereof - Google Patents

Abstract

The present invention relates to a connection structure of a reinforced soil retaining wall and, more specifically, to a connection structure of a reinforced soil retaining wall, which includes: a plurality of blocks built to be stacked in a height direction such that a rear end of the block is buried in a mounding part; a plurality of reinforcement parts buried in the mounding part to be connected to a connector installed on the blocks so as to support the blocks; and a soil nail buried in a cutting part so that an end of the soil nail is exposed to the outside, and having the exposed end connected to the reinforcement parts to support the blocks. As the connector is installed to be movable in a vertical direction of the blocks, the reinforcement parts are connected and installed in plurality so as to form different angles for the one single soil nail, thereby enabling the connector connected with a reinforcement material to be moved not only in a lateral direction but also in a vertical direction in the blocks constituting a reinforcement soil retaining wall to improve constructability even during the construction of a curved part. Moreover, a plurality of reinforcement materials can be connected to one single soil nail to be efficiently consumed, thereby having an effect of an increase in economic feasibility.

Description

Connection structure of reinforced soil retaining wall and its construction method {CONNECTING STRUCTURE OF REINFORCED WALL AND CONSTRUCTING METHOD THEREOF}

The present invention relates to the field of civil engineering, and more particularly, a connector connected to a reinforcing material enables flow in the vertical direction as well as in the left and right directions inside a block constituting a reinforced soil retaining wall, thereby improving workability even when constructing a curved part. It relates to a connection structure of a reinforced soil retaining wall that can increase economic feasibility by enabling materials to be used efficiently by enabling a plurality of reinforcing materials to be connected to one soil nail.

In general, soil nails are used for digging, retaining walls, reinforcement of natural and artificial slopes adjacent to railways and roads, excavation support systems required for constructing civil engineering facilities such as underground structures and tunnels, repair of existing retaining walls, and installation of retaining walls. is the absence of

These soil-nails reduce the risk of cracking and collapse of the excavated surface or adjacent ground in the case of soft ground in which soil collapse and cracks can easily occur. Safety measures are used to prevent in advance, and a series of reinforcement work is performed through the excavation or cutting process, so that the slope or excavation surface is excavated at a stable height that can stand on its own, and at the same time shotcrete (spraying concrete) By constructing the surface protection surface and drilling the back of the excavation, it can resist the tensile stress, shear stress and bending moment of reinforcing bars or wires.

1 is a cross-sectional view showing a structure in which a conventional reinforced soil block is installed.

As shown in FIG. 1, the structure in which the conventional reinforced soil block is installed improves the shear resistance of the soft ground by inserting a soil nail 10 into the slope of the cut part and then grouting it to form a reinforced soil body, thereby reducing the excavated soft ground. It promotes the stability of excavation work by solving problems such as cracks and collapses that may occur.

In addition, when the installation of the soil nail 10 is completed, the block 20 and the connector 30 are installed to be connected to support the block 20 forming the reinforced soil retaining wall, and the soil nail is installed at the end of the connector 30 The reinforcing member 40 connected to the end of 10 is fastened so that the nail nail 10 can support the block as a result.

However, in such a conventional reinforced soil retaining wall, in a state in which the connector 30 and the reinforcing material 40 are connected to the connection groove formed on the upper part of the block 20 constituting the reinforced soil retaining wall during construction, the connector 30 Since it is a structure in which the connector 30 is connected in a one-to-one manner with the soil nail 10 penetrated into the cutting part using the reinforcing material 40 in a state where is fixed horizontally, the soil nail 10 is the same as the number of reinforcing materials 40. ), there is a problem that not only a lot of time and effort is required for the construction of the soil nail 10, but also the economic feasibility is reduced.

In addition, since the connector 30 is fixed in the horizontal direction toward the front of the block 20, if the distance between the soil nail 10 and the reinforcing material 40 is not accurate, the reinforcing material 40 is artificially used in the field. There is a problem in that workability is deteriorated because construction must be performed after additionally performing a bending operation and processing.

The present invention has been made to solve the above problems, and the connector connected to the reinforcing material enables flow in the vertical direction as well as the left and right directions inside the block constituting the reinforced soil retaining wall, so that workability is improved even when constructing curved parts. The purpose is to provide a connection structure of a reinforced soil retaining wall that can improve economic efficiency by enabling materials to be used efficiently by enabling a plurality of reinforcing materials to be connected to one soil nail.

The connection structure of the reinforced soil retaining wall to achieve the object of the present invention as described above is a plurality of blocks built to be stacked along the height direction and buried in the embankment portion at the rear end, and embedded in the embankment portion to support the blocks A plurality of reinforcing parts connected to the connectors installed in the block, and a soil nail buried inside the cut so that the end is exposed to the outside and the exposed end is connected to the reinforcing part to support the block Reinforced soil retaining wall including a nail As the connection structure, the connector is installed movably along the vertical direction of the block, so that a plurality of reinforcing parts are installed to form a different angle with respect to one nail.

Here, a longitudinal insertion groove and a transverse insertion groove are recessed on the upper plate surface of the block, and the connector and the transverse insertion member are installed in the longitudinal insertion groove and the transverse insertion groove, respectively, and the connector The reinforcing part may be installed to be flexible even along the left and right directions of the block.

In addition, the connector has an insertion hole formed through each of both sides disposed opposite to each other so as to be inserted into the outer surface of the transverse insertion member, and both ends are connected to the ends of the both sides, and the through hole is provided on the front surface integrally formed with the both sides and formed to have a 'c'-shaped cross section, and at the end of the reinforcing part inserted into the through hole, a departure prevention member formed to have a relatively larger diameter than the diameter of the through hole to prevent the reinforcing part from being separated from the through hole. can be fixedly coupled.

In addition, the through hole may be formed in a long hole shape cut along the longitudinal direction of the connector so that the reinforcing part may flow along the left and right directions of the block.

In addition, the insertion hole formed in the connector may be formed in a long hole shape cut along the longitudinal direction of the connector so that the connector itself can flow along the left and right directions of the block.

In addition, the connector has an insertion hole formed through one end so as to be inserted into the outer surface of the transverse insertion member, and a through hole formed through the other end, formed in a bar shape having a predetermined length, and bent to be inserted into the through hole An escape prevention member formed to have a relatively larger diameter than the diameter of the through hole may be fixedly coupled to an end of the reinforcing part to prevent the reinforcing part from being separated from the through hole.

In addition, the through hole may be formed in a long hole shape cut along the longitudinal direction of the connector so that the reinforcing part can flow along the left and right directions of the block.

In addition, the insertion hole formed in the connector may be formed in a long hole shape cut along the longitudinal direction of the connector so that the connector itself can flow along the left and right directions of the block.

In addition, a pair of pivoting plates in which a fastening hole is formed through one side of the reinforcement part and the soil nail and a fixing hole is formed through the other side so that the end of the soil nail protruding to the outside of the cutting part is rotatably fastened to the fastening hole. And, a pair of flow prevention devices fixed to both sides of the end of the soil nail based on the rotation plate to prevent the rotation plate from flowing along the longitudinal direction of the soil nail at the end of the soil nail, and the rotation plate It is fastened to the end of the reinforcing part inserted into the fixing hole of and can be connected by a fixture that prevents the reinforcing part from being separated from the fixing hole when tension is applied.

In addition, the reinforcing part and the soil nail are formed to have a '∩'-shaped longitudinal cross section with an open bottom surface so that they are seated and fixed on the end area of the soil nail protruding out of the cutting part, and are formed on both front and rear side plate surfaces, respectively. A fixing bracket through which a connecting hole and a fixing hole are formed, a fastener fastened to the end of the soil nail so that the fixing bracket remains fixed to the end of the soil nail, and a rotation in the connecting hole so as to protrude out of the fixing bracket. It is connected by a connecting member having a through hole through which the reinforcing part is inserted into the protruding area and a fixture fastened to an end of the reinforcing part inserted into the through hole to prevent the reinforcing part from being separated from the through hole when tension is applied. can

A method for constructing a connection structure of a reinforced soil retaining wall to achieve the object of the present invention as described above includes the steps of excavating a foundation in the ground on which the block is to be installed; Stacking and installing the blocks on the ground on which foundation excavation work is completed; installing the connector on the block and connecting the connector and the reinforcing part; Installing a plurality of soil nails on the cutting part; connecting the reinforcement part and the soil nail in a direction parallel to the ground and a direction parallel to a direction in which the soil nail is installed in the cutting part; Laying and compacting reinforcement soil on the embankment; characterized by including

As described above, the connection structure of the reinforced earth retaining wall according to the present invention allows the connector connected to the reinforcing member to flow in the vertical direction as well as the left and right directions inside the block constituting the reinforced earth retaining wall, thereby improving workability even when constructing a curved part. There is an effect of improving economic feasibility by enabling efficient use of materials by improving and enabling a plurality of reinforcing materials to be connected to one soil nail.

1 is a cross-sectional view showing a structure in which a conventional block-type reinforced soil retaining wall is installed;
2 is a perspective view showing the structure of a reinforced soil block according to a first embodiment of the present invention;
3 is a perspective view showing the structure of a reinforced soil block according to a second embodiment of the present invention;
4 is a perspective view showing the structure of a reinforced soil block according to a third embodiment of the present invention;
5 is a perspective view showing a structure in which reinforced earth blocks are stacked according to a third embodiment of the present invention;
6 is a side view showing a structure viewed from the side of a reinforced soil block according to a third embodiment of the present invention;
7 is a plan view showing an embodiment of an internal connection structure of a reinforced soil block according to the present invention;
Figure 8 is a perspective view showing the structure of the connector of Figure 7,
9 is a plan view showing another embodiment of an internal connection structure of a reinforced soil block according to the present invention;
Figure 10 is a perspective view showing the structure of the connector of Figure 9,
11 is a plan view showing an embodiment of a reinforcement part of a reinforced soil retaining wall and a soil nail connection structure;
12 is a cross-sectional view showing another embodiment of a reinforcement part of a reinforced soil retaining wall and a soil nail connection structure;
13 is a cross-sectional view showing a connection structure of a reinforced soil retaining wall according to the present invention;
14 is a construction flow chart sequentially describing the process of constructing a reinforced soil retaining wall according to the present invention.

Hereinafter, a connection structure of a reinforced soil retaining wall according to an embodiment of the present invention will be described in detail based on the accompanying drawings.

2 is a perspective view showing the structure of a reinforcement soil block according to a first embodiment of the present invention, FIG. 3 is a perspective view showing the structure of a reinforcement soil block according to a second embodiment of the present invention, and FIG. It is a perspective view showing the structure of a reinforcement soil block according to a third embodiment, Figure 5 is a perspective view showing a structure in which reinforcement soil blocks are stacked according to a third embodiment of the present invention, Figure 6 is a third embodiment of the present invention 7 is a plan view showing an embodiment of an internal connection structure of a reinforcement soil block according to the present invention, and FIG. 8 is a perspective view showing the structure of the connector of FIG. 7 9 is a plan view showing another embodiment of an internal connection structure of a reinforced soil block according to the present invention, FIG. 10 is a perspective view showing the structure of the connector of FIG. 9, and FIG. 11 is a reinforcement part of a reinforced soil retaining wall and a soil nail It is a plan view showing an embodiment of a connection structure, and FIG. 12 is a cross-sectional view showing another embodiment of a reinforcement part and a soil nail connection structure of a reinforced soil retaining wall, and FIG. 13 is a view showing a connection structure of a reinforced soil retaining wall according to the present invention 14 is a construction flow chart sequentially describing the process of constructing a reinforced soil retaining wall according to the present invention.

As shown in these figures, the connection structure of the reinforced soil retaining wall according to the present invention is built to be stacked along the height direction, and the rear end is buried in the embankment portion, and the plurality of blocks 100 are buried in the embankment portion to A plurality of reinforcing parts 200 connected to the connectors 111 installed on the block 100 to support the block 100, and the ends are buried inside the cutout so as to be exposed to the outside, and the ends exposed to the outside are the reinforcement parts. As a connection structure of a reinforced soil retaining wall including a soil nail 300 connected to the part 200 to support the block 100, the connector 111 is installed movably along the up-down direction of the block 100, thereby It is characterized in that the reinforcing part 200 is installed in plurality by being connected at different angles with respect to one sole nail 300 .

First, the block 100 is formed of concrete material and is a structure built by matching rows and columns to form a surface structure, and a longitudinal insertion groove 110 and a transverse insertion groove 120 are recessed at a certain depth on the upper plate surface have.

The connector 111 is disposed and seated in the longitudinal insertion groove 110, and the transverse member 121 is inserted and seated in the transverse insertion groove 120, so that the block 100 is constructed by the reinforcement part 200 form to be supported.

In addition, the connector 111 may be connected to the horizontal insertion member 111 in any structure as long as it can flow along the left and right directions and the vertical direction. For example, the end of the connector 111 is the transverse member 121 It may be hinged to the central area of the or connected to the ball point contact.

Corners of the key 130 protruding from both sides of the longitudinal insertion groove 110 are curved so that the connector 111 disposed in the longitudinal insertion groove 110 can move in the left and right directions.

It is effective to make the corner of the key 130 curved by adjusting the degree of curvature and the curved direction according to the range in which the connector 111 can move in the left and right directions.

In the case of the reinforced soil block according to the first embodiment of the present invention shown in FIG. 2, a pair of keys 130 are provided on both sides of the front of the transverse insertion groove 120 in the direction along the front, and the key 130 The inner surface of has a configuration formed to be curved.

In the case of the reinforced soil block according to the second embodiment of the present invention shown in FIG. 3, a pair of keys 130 are provided on both sides in the direction along the front in the front of the transverse insertion groove 120, and the keys 130 It has a configuration in which the inner and outer surfaces of are formed to be curved.

And, in the case of the reinforced earth block according to the third embodiment of the present invention shown in FIG. 4, two pairs of keys 130 are provided on both sides in the direction along the front and rear in the front of the transverse insertion groove 120, Keys 130 disposed in the direction along the front have curved inner surfaces, and keys 130 disposed in the direction along the rear have curved inner and outer surfaces.

As described above, since the key 130 of the reinforcement soil block according to the first to third embodiments of the present invention is formed in a curved shape, after the reinforcement soil block is arranged in a curved shape to form a curvature, an alternating layer is applied to the upper surface thereof. When the key 130 of the reinforcement soil block disposed on the lower side is inserted into the receiving groove 150 of the reinforced soil block disposed on the upper side when stacking another reinforced soil block, the receiving groove 150 of the reinforced soil block located on the upper side is formed. There is an additional effect of arranging the reinforcement soil block in a form that smoothly forms a curvature so as not to interfere with the side surface.

As shown in FIGS. 2 and 4, in the case of the reinforced soil according to the first and third embodiments of the present invention, the connector 111 protruding outward on one side of the front surface of the block 100 flows in the vertical direction. It is effective to form the flow hole 140 by stacking the blocks 100 in a zigzag pattern so as to be possible.

And, as shown in FIG. 5, in the flow hole 140, another block 100 is stacked in a zigzag manner between one block 100 and another block 100 disposed spaced apart from each other. It is a space formed by the spaced apart space and the longitudinal insertion groove 110 by being.

The flow hole 140 is preferably formed to have the same width as the range in which the connector 111 flows in the left-right direction and the same height as the range in which the connector 111 flows in the vertical direction.

That is, it is effective that both side surfaces of the flow hole 140 are formed to be tapered in a direction that widens from the inside of the block 100 to the outside so that the connector 111 does not interfere when flowing along the left and right directions.

As shown in FIG. 3, in the case of the reinforced soil block according to the second embodiment of the present invention, the connector 111 protruding outward from one side of the front surface of the block 100 is movable along the up and down direction of the block 100 The front plate surface of may be provided with a stepped surface 170 formed to be relatively low in height compared to the rear plate surface.

In the case of this configuration, the flow of the connector 111 is maintained while maintaining the rigidity of the block 100 because the rigidity of the block 100 itself can be prevented from being lowered due to the formation of the receiving groove 150 in the block 100. There is an effect that can make it possible.

And, as shown in FIG. 6, it is effective that the receiving groove 150 is recessed on the lower surface of the block 100 so that the block 100 can be firmly stacked.

An accommodation groove 150 is formed on the lower surface of the block 100, and a longitudinal insertion groove 110 is formed in the block 100 so that one side of the inner surface of the accommodation groove 150 is caught on one side of the upper surface of the block 100 It is possible to effectively prevent the block 100 from flowing along the direction.

On the other hand, the reinforcing part 200 serves to support the block 100 by being connected to the connector 111 disposed in the longitudinal insertion groove 110 and buried in the back soil.

In order to support the block 100, the end of the other side opposite to one side of the reinforcing part 200 connected to the connector 111 is fixedly coupled to the end of the soil nail 300 to be described later, thereby further supporting the block 100. let it be

The end of the reinforcing part 200 is connected in plurality to the end of the soil nail 300 exposed to the outside in a state inserted into the cutting part, and the structure in which the reinforcing beam 200 and the soil nail 300 are connected is A plurality of sole nails 300 may be installed not only in a direction parallel to the ground, but also in a direction parallel to the direction in which the sole nail 300 is installed in the cutting part.

In addition, depending on the situation of the construction site, the plurality of reinforcing parts 200 may be connected not only in a direction parallel to the ground or parallel to the soil nail 300, but also at different angles with respect to one soil nail 300. Of course.

This is possible because the connector 111 is movably installed along the left and right directions and up and down directions with respect to the transverse insertion member 121 disposed in the transverse insertion groove 120 inside the block 100.

If the connector 111 does not flow along the horizontal and vertical directions, in the case of the reinforcing part 200 disposed in a direction parallel to the direction in which the soil nail 200 is installed in the cut portion, the connector 111 Since the end of the reinforcement part 200 must be connected to the end of the connector 111 in a horizontally arranged state, the reinforcement part 200 cannot effectively disperse the applied tension, so there is a problem that the bearing capacity may be reduced. .

Since the connector 111 is movably installed along the horizontal and vertical directions inside the block 100, the tension applied to the reinforcing part 200 is applied to the transverse insertion member 121 through the connector 111. It has the effect of improving the bearing capacity by allowing it to act vertically at all times.

As shown in FIGS. 7 and 8, an embodiment of an internal connection structure of a reinforced soil block according to the present invention is as follows.

The internal connection structure of the reinforcement soil block according to an embodiment includes a transverse insertion member 121 inserted into the transverse insertion groove 120 formed in the reinforcement soil block and inserted into the outer surface of the transverse insertion member 121 Insertion holes 111a are formed through each of the opposite side surfaces, and both ends are connected to the ends of the both sides, so that the through-holes 111b are formed on the front surface integrally formed with the both sides. A 'c'-shaped connector ( 111) and the diameter of the through hole 111b to be fixedly coupled to the end of the reinforcing part 200 inserted into the through hole 111b and to prevent the reinforcing part 200 from being separated from the through hole 111b. It is configured to include a separation preventing member 210 formed to have a relatively larger diameter.

Here, the through hole 111b may be formed in a long hole shape cut in the horizontal direction so that the reinforcing part 200 can flow more easily along the left and right directions of the block 100 .

In addition, the insertion hole 111a formed on both sides of the connector 111 may be formed in a long hole shape long cut along the longitudinal direction of both sides so that the connector 111 itself can flow along the left and right directions of the block 100. have.

As shown in FIGS. 9 and 10, another embodiment of the internal connection structure of the reinforced soil block according to the present invention is as follows.

The internal connection structure of the reinforcement soil block according to another embodiment is such that the transverse insertion member 121 inserted into the transverse insertion groove 120 formed in the reinforcement soil block and the outer surface of the transverse insertion member 121 An insertion hole 112a is formed through one end and a through hole 112b is formed through the other end, and a connector 112 formed in a bar shape having a certain length and bent to be inserted into the through hole 112b. The separation prevention member 210 fixedly coupled to the end of the reinforcement part 200 and formed to have a relatively larger diameter than the diameter of the through hole 112b to prevent the reinforcement part 200 from being separated from the through hole 112b. ) is included.

Here, the through hole 112b may be formed in a long hole shape cut along the longitudinal direction of the connector 112 so that the reinforcing part 200 can more easily flow along the left and right directions of the block 100.

In addition, the insertion hole 112a formed in the connector 112 is formed in a long hole shape cut along the longitudinal direction of the connector 112 so that the connector 112 itself can flow along the left and right directions of the block 100. may be

In addition, the length of the connector 112 itself may be formed differently. As shown in FIG. In order to position, the length of the connector 112 may be formed short.

As shown in (b) of FIG. 9, the length of the connector 112 is adjusted so that the connection between the reinforcing part 200 and the connector 112 is located in the longitudinal insertion groove 110 of the block 100. Form medium.

As shown in (a) of FIG. 9, in order to place the connection portion of the reinforcing part 200 and the connector 112 at a position protruding forward of the block 100, the length of the connector 112 is formed long. So that the end of the connector 112 can protrude out of the block 100.

As the length of the connector 112 is formed longer, the range in which the connector 112 can flow along the left and right directions of the block 100 is larger. ) is effective.

And, in the case of a structure in which the reinforcing part 200 is connected by the bar-shaped connector 112, the end of the reinforcing part 200 is formed bent in an 'L' shape, and the bent area penetrates the connector 112. To be inserted into the ball (112b), it is effective that the anti-separation member 210 is installed in close contact with the plate surface of the connector 112 to the maximum extent possible to prevent eccentricity when tension is applied to the reinforcing part 200.

Meanwhile, the soil nail 300 serves to support the block 100 through the reinforcing part 200 by being connected to the reinforcing part 200 at an end in a buried state after being inserted into the cutting part.

The soil nail 300 is inserted and buried into the cutting water in a vertical direction with respect to the inclined outer surface of the cutting part, and a soil nail to be installed by connecting a plurality of reinforcing parts 200 to one soil nail 300. It is desirable to reduce the number of nails 300 .

Here, the soil nail 300 is inserted in a direction perpendicular to the slope formed in the cutting part and installed so as to be embedded in the cutting part, so that the force of the reinforcement part 200 along the horizontal direction acts toward the soil nail 300. This is to prevent the soil nail 300 from being easily separated from the cutting part at the time of use.

This soil nail 300 is a bar-shaped member with a certain length, and the end is formed sharp so that it can be easily inserted into the cutting part when inserting the soil nail 300, and the ground forming the cutting part The length is determined according to the strength so that the bearing capacity can be adjusted.

In addition, the soil nail 300 is inserted into the cut portion to increase the surface frictional force when supporting the block 100 by the reinforcing portion 200, so that a plurality of protrusions form a pattern on the outer surface so as to improve the supporting force. it is effective

As shown in FIG. 11, an embodiment of a structure connecting a reinforcing part and a soil nail is as follows.

As shown in FIG. 11, in the structure connecting the reinforcement part and the soil nail, a fastening hole 311 is formed through one side and a fixing hole 312 is formed through it on the other side, so that the fastening hole 311 is passed through to the outside of the cutting part. A pair of rotation plates 310 to which the ends of the protruding soil nail 300 are rotatably fastened, and fixed to both sides of the ends of the soil nail 300 based on the rotation plate 310, so that the rotation plate ( 310) at the end of the soil nail 300 to prevent the flow along the longitudinal direction of the soil nail 300, a pair of flow prevention devices 320, and a fixing hole 312 of the rotation plate 310 It is fastened to the end of the reinforcing part 200 inserted into the ) and is configured to include a fixture 220 that prevents the reinforcing part 200 from being separated from the fixing hole 312 when tension is applied.

The rotation plate 310 is assembled in a form that is simply inserted into the outer surface of the soil nail 300 so that it can be rotated, so that the position of the fixing hole 312 can be changed, thereby increasing the degree of freedom in design. let it have

The fastening hole 311 and the fixing hole 312 formed through the rotation plate 310 are formed relatively slightly larger than the diameters of the soil nail 300 and the reinforcing part 200, respectively, so that it is effective to facilitate assembly. to be.

The flow prevention device 320 is fastened to the front and rear of the soil nail 300 based on the rotation plate 310, respectively, to prevent the flow prevention device 320 from flowing along the length direction of the soil nail 300. play a role

As shown in FIG. 12, another embodiment of the reinforcing part and the soil nail connection structure is as follows.

It is formed to have a '∩'-shaped longitudinal section with an open bottom surface so that it is seated and fixed on the end area of the soil nail 300 protruding out of the cut-out, and the connecting hole 331 and the fixing hole are respectively provided on both sides of the front and rear plate surfaces. A fixing bracket 330 through which 332 is formed, and a fastener 340 fastened to the end of the soil nail 300 so that the fixing bracket 330 remains fixed to the end of the soil nail 300. ), and a connecting member 350 rotatably fastened to the connection hole so as to protrude out of the fixing bracket 300 and having a through hole into which the reinforcing part 200 is inserted in the protruded area, and inserted into the through hole. It is configured to include a fixture 220 fastened to the end of the reinforced portion 200 to prevent the reinforcing portion 200 from being separated from the through hole when tension is applied.

The fixing bracket 330 is seated on the outer surface of the soil nail 300 in such a way as to cover the end area of the soil nail 300 protruding out of the cutout, and the connecting member 350 ) is connected to enable assembly of the reinforcing part 200, and nuts and bolts are fastened to the fixing holes 332 formed on both rear side plate surfaces so that both sides are pressed to the outer surface of the sole nail 300.

The fastener 340 is fastened to the end of the soil nail 300 to prevent the fixing bracket 300 from being separated from the soil nail 300, and a through hole is formed in the connecting member 350 so that the reinforcement part 200 ) so that it is fastened in the form inserted into the through hole.

The connection member 350 is rotatable while connected to the connection hole 331 so that the direction in which the reinforcing part 200 fastened to the through hole is disposed can be changed in the vertical direction, thereby improving the freedom of construction it is effective

In addition, a fixture 220 having a relatively larger diameter than the through hole should be fixedly coupled to an end of the reinforcing part 200 to prevent separation of the reinforcing part 200 fastened to the through hole.

The process of constructing the connection structure of the reinforced soil retaining wall according to the present invention having the configuration as described above is as follows.

First, after receiving the construction section by surveying, excavation work is carried out on the construction section. If the foundation section of the reinforced soil retaining wall is a soft ground, the bearing capacity test is conducted by structural calculation after substituting with an appropriate material. .

Then, in order to prevent differential settlement of the retaining wall foundation, the block 100 is installed after the concrete foundation is placed on the ground where the excavation work has been performed, and drainage aggregate such as gravel is filled in the block 100.

When the installation of the block 100 is completed, the transverse insertion member 121 is installed in the transverse insertion groove 120 and the connectors 111 and 112 are placed in the longitudinal insertion groove 110, and then the transverse insertion member ( 121), the connectors 111 and 112 are installed to be movable in left and right directions and up and down directions.

Then, after the soil nail 300 is inserted into the cutting part and buried, the end of the reinforcement part 200 is fastened to the end of the soil nail 300. At this time, the reinforcement part ( 200) connects the two reinforcing parts 200 in a direction parallel to the direction in which the soil nail 300 is disposed in the cutting part and the direction in which the soil nail 300 is arranged horizontally with the ground, so that the reinforcing part 200 firmly supports the block 100 make it possible

In this structure, since the connectors 111 and 112 are movably installed along the horizontal and vertical directions inside the block 100, the tension applied to the reinforcing part 200 is transverse through the connectors 111 and 112. There is an effect that can be able to improve the bearing capacity so that it can always act vertically on the direction insertion member 121.

When the installation of the block 100, the reinforcement part 200, and the soil nail 300 is completed by the above process, the reinforcement soil is applied to the embankment so that the rear end of the block 100 and the reinforcement part 200 are buried by the background sand. After laying, compaction is performed to complete the construction of the reinforced soil block.

The connection structure of the reinforced soil retaining wall according to an embodiment of the present invention having such a configuration improves workability by allowing the connector connected to the reinforcing material to flow in the vertical direction as well as the left and right directions inside the block constituting the reinforced soil retaining wall It is possible to increase economic efficiency by ensuring that materials are used efficiently.

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

100: block 110: longitudinal insertion groove
111: connector 120: transverse insertion groove
121: transverse insertion member 130: key
140: floating hole 150: receiving groove
170: step surface
200: reinforcement part 210: departure prevention member
220: fixture 300: soil nail
310: rotation plate 311: fastening hole
312: fixed hole 320: flow prevention device
330: fixing bracket 331: connecting hole
332: fixing hole 340: fastener
350: connecting member

Claims (11)

A plurality of blocks 100 built to be stacked along the height direction and the rear end buried in the embankment part, and a connector 111 installed in the block 100 so as to support the block 100 by being embedded in the embankment part A plurality of connected reinforcing parts 200 and a soil nail 300 that is buried inside the cutting part so that its end is exposed to the outside, and the externally exposed end is connected to the reinforcing part 200 to support the block 100. ) As a connection structure of a reinforced soil retaining wall including,
As the connector 111 is movably installed along the vertical direction of the block 100, a plurality of reinforcing parts 200 are connected to form a different angle with respect to one soil nail 300 and installed in plurality. The connection structure of the reinforced soil retaining wall. According to claim 1,
A longitudinal insertion groove 110 and a transverse insertion groove 120 are recessed on the upper plate surface of the block 100, so that the connectors ( 111) and a transverse insertion member 121 are installed, and the reinforcing part 200 is movably installed along the left and right direction of the block 100 with respect to the connector 111. Of the reinforced soil retaining wall, characterized in that connection structure. According to claim 2,
In the connector 111, insertion holes 111a are formed through each of the opposite side surfaces disposed opposite to each other so as to be inserted into the outer surface of the transverse insertion member 121, and both ends are connected to the ends of the both side surfaces to A through hole 111b is provided on the integrally formed front surface to have a 'c'-shaped cross section, and the reinforcing part 200 is formed at an end of the reinforcing part 200 inserted into the through hole 111b. The connection structure of the reinforced soil retaining wall, characterized in that the separation preventing member 210 formed to have a relatively larger diameter than the diameter of the through hole (111b) is fixedly coupled to prevent separation from the through hole (111b). According to claim 2,
Reinforced soil, characterized in that the through hole (112b) is formed in a long hole shape cut along the longitudinal direction of the connector (112) so that the reinforcement part (200) can flow along the left and right directions of the block (100) Retaining wall connection structure. According to claim 2,
The insertion hole 112a formed in the connector 112 so that the connector 112 itself can flow along the left and right directions of the block 100 has a long hole shape cut along the longitudinal direction of the connector 112. The connection structure of the reinforced soil retaining wall, characterized in that formed. According to claim 2,
The connector 112 has an insertion hole 112a formed through one end and a through hole 112b formed through the other end so as to be inserted into the outer surface of the transverse insertion member 121, and a bar shape having a certain length. , and at the end of the reinforcing part 200 bent to be inserted into the through hole 112b, the diameter of the through hole 112b is smaller than the diameter of the through hole 112b to prevent the reinforcing part 200 from being separated from the through hole 112b. The connection structure of the reinforced soil retaining wall, characterized in that the separation prevention member 210 formed to have a relatively large diameter is fixedly coupled. According to claim 6,
The through hole (112b) is formed in the shape of a long hole cut long along the longitudinal direction of the connector (112) so that the reinforcement part (200) can flow along the left and right directions of the block (100) Connection of the reinforced soil retaining wall rescue. According to claim 6,
The insertion hole 112a formed in the connector 112 so that the connector 112 itself can flow along the left and right directions of the block 100 has a long hole shape cut along the longitudinal direction of the connector 112. The connection structure of the reinforced soil retaining wall, characterized in that formed by. According to claim 1,
As long as the fastening hole 311 is formed through one side and the fixing hole 312 is formed through the other side, so that the end of the soil nail 300 protruding outside the cutting part is rotatably fastened to the fastening hole 311. A pair of rotation plates 310 are fixed to both sides of the end of the soil nail 300 based on the rotation plate 310, so that the rotation plate 310 is attached to the soil nail at the end of the soil nail 300 ( 300) is fastened to an end of a pair of flow prevention devices 320 that prevent flow along the longitudinal direction and the reinforcing part 200 inserted into the fixing hole 312 of the pivot plate 310 Reinforced soil retaining wall, characterized in that the reinforcement part 200 and the soil nail 300 are connected by a fixture 220 that prevents the reinforcement part 200 from being separated from the fixing hole 312 when tension is applied connection structure. According to claim 1,
It is formed to have a '∩'-shaped longitudinal cross-section with an open bottom surface so that it is seated and fixed on the end area of the soil nail 300 protruding out of the cut-out portion, and is fixed with connection holes 331 on both sides of the front and rear plate surfaces, respectively. A fixing bracket 330 through which a ball 332 passes, and a fastener fastened to the end of the soil nail 300 so that the fixing bracket 330 remains fixed to the end of the soil nail 300 ( 340), and a connection member 350 rotatably fastened to the connection hole 331 so as to protrude out of the fixing bracket 300 and having a through hole formed in the protruding area into which the reinforcing part 200 is inserted; The reinforcing part 200 and the soil nail are secured by the fixture 220, which is fastened to the end of the reinforcing part 200 inserted into the through hole and prevents the reinforcing part 200 from being separated from the through hole when tension is applied. The connection structure of the reinforced soil retaining wall, characterized in that (300) is connected. A construction method for constructing a connection structure of a reinforced soil retaining wall according to any one of claims 1 to 10,
performing a foundation excavation work on the ground on which the block 100 is to be installed;
Stacking and installing the block 100 on the ground on which foundation excavation work is completed;
Installing the connector on the block 100 and connecting the connector and the reinforcing part 200;
Installing a plurality of soil nails 300 in the cutting part;
connecting the reinforcement part 200 and the soil nail 300 in a direction parallel to the ground and a direction parallel to a direction in which the soil nail is installed in the cutting part;
Laying and compacting reinforcement soil on the embankment;
A method of constructing a connection structure of a reinforced soil retaining wall, characterized in that it includes.

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