KR100981258B1 - The retaining wall block and the construction method of retaining wall with retaining wall block and geogrid - Google Patents

Abstract

PURPOSE: A retaining wall block for retaining wall construction and a construction method of a retaining wall using a retaining wall block and a retaining wall block and a geogrid are provided to prevent the inflow of water using water sealing mat and by reinforcing a foundation using a geogrid. CONSTITUTION: A retaining wall block for retaining wall construction is as follows. A foundation(100) is formed along a construction area floor. A retaining wall block(10) is stacked on the foundation. A drainage guide pipe(200) is filled with rubble and soil and established in the retaining wall block back side. A support stand(22) is inserted into each hook of a geogrid(20). The support stand is fitted in a hanging groove(13) of the retaining wall block. The retaining wall block is stacked on the top of the retaining wall block. The back side of the retaining wall block is filled with rubble and soil. A cutoff mat(600) is installed to the retaining wall block and construction area. The soil is installed to the top of the cutoff mat. A side ditch(700) is formed on the stepped soil.

Description

Retaining wall block and the construction method of retaining wall with retaining wall block and geogrid}

The present invention relates to a retaining wall block for retaining wall construction, and a method of constructing a retaining wall using the retaining wall block and a geogrid. A geogrid comprising a plurality of rings integrally is provided; Form a base on the arranged construction floor; Depositing the retaining wall block along the formed base; A rear surface of the retained retaining wall block is installed so that the drainage induction pipe and the rubble are wrapped by the nonwoven fabric, and fills the soil between the nonwoven fabric and the slope; Inserting the support into the ring of the provided geogrid, install the support in the locking groove of the retaining wall block to install the geogrid; Assemble a retaining wall block above the installed retaining wall block; The retained wall block back is filled with non-woven fabric and rubble to cover the rubble; The process of installing the geogrid, masonry of the retaining wall block, and filling the rubble and soil wrapped in the nonwoven between the retaining wall block and the slope to the designed height; Placing the order mat and the soil in order on the retaining wall block and the filled soil; To complete the method of construction of the retaining wall by the formation of side openings; Geogrid reinforces the ground, prevents the inflow of water primarily by the order mat, and the rubble accumulated on the non-woven fabric at the back of the retaining wall block, and the water flows down and drains along the drainage induction pipe, so the drainage of the constructed retaining wall To facilitate, and to prevent the loss of soil, it is possible to prevent the collapse of the retaining wall constructed.

Generally, the retaining wall is the most common structure that resists earth pressure. It is used for the optimal use of land due to the limitation of the land such as roads, railways, harbors, embankments, shifts, and redevelopment apartments. It is installed on the slopes of residential sites and foothills bordering roads, and is responsible for preventing them from collapsing due to natural conditions such as earth pressure and storm water.

Previously, in the case of retaining wall structure, there was a construction method in which formwork was installed as much as the installation height, reinforcing reinforcing bars, and concrete was poured, but recently, various prefabricated retaining wall methods using retaining wall blocks manufactured in unit sizes of concrete have been developed in recent years. It is becoming.

And as an example of construction using retaining wall blocks, Korean Patent Registration No. 0648110 discloses the reinforcement earth block bound by the anchor bar using the reinforcement earth block and geogrid, and the structure and method of installing the reinforcement earth block that can adjust the installation angle using the same. , Korean Patent Registration No. 0386406 discloses the structure of the retaining wall for the retaining wall construction, the masonry retaining wall structure using the geogrid and the hinge and the retaining wall construction method using the same.

Meanwhile, the two domestic patent registrations exemplified in the retaining wall construction above include both the geogrids in the retaining wall construction, and both of them are constrained by the front side of the geogrid, respectively, by restricting the mesh portion of the geogrid by anchor bars or hinges. In this case, since the load is concentrated on the front side portion of the geogrid, the geogrid is broken after installation.

In addition, while constructing the retaining wall block, the back of the retaining wall block is filled with soil.After the retaining wall construction, the rain or snow falls, and when water enters the back of the retaining wall block from the top of the retained wall, the filled soil is lost. After a while, there is a big problem of retaining wall blocks.

In addition, the existing retaining wall block forms a space inside the retaining wall block, and the left and right widths of the retaining wall block are formed to become narrower from the front side to the rear side, so that the retaining wall block is easily formed in the curved section (curve section, corner section). When the retaining wall block is applied to a straight section, space is generated between the retaining wall blocks at the rear of the retained wall block, so that water flowing through the rear wall of the retaining wall block or backfilled soil flows into the retaining wall block. As a result, the durability of the retaining wall block is reduced, and there is a great problem of the damage of the retaining wall block and the collapse of the retaining wall.

Therefore, the present invention is to solve the above problems, is provided with a retaining wall block of the hexahedral shape to form a locking groove along the left and right width in the upper front, and a geogrid consisting of a plurality of rings integrally along one side edge; Form a base on the arranged construction floor; Depositing the retaining wall block along the formed base; A rear surface of the retained retaining wall block is installed so that the drainage induction pipe and the rubble are wrapped by the nonwoven fabric, and fills the soil between the nonwoven fabric and the slope; Inserting the support into the ring of the provided geogrid, install the support in the locking groove of the retaining wall block to install the geogrid; Assemble a retaining wall block above the installed retaining wall block; The retained wall block back is filled with non-woven fabric and rubble to cover the rubble; The process of installing the geogrid, masonry of the retaining wall block, and filling the rubble and soil wrapped in the nonwoven between the retaining wall block and the slope to the designed height; Placing the order mat and the soil in order on the retaining wall block and the filled soil; To complete the method of construction of the retaining wall by the formation of side openings; Geogrid reinforces the ground, prevents the inflow of water primarily by the order mat, and the rubble accumulated on the nonwoven fabric at the back of the retaining wall block, and the water flows down and drains along the drainage induction pipe. To prevent the loss of soil and to prevent the collapse of the retaining wall.

’의 구조를 가지는 배수대가 일체로 구성되어, 시공된 옹벽의 옹벽블록 후면을 따라 물이 흐르되, 물은 배수돌기와, 배수대를 따라 흐르면서 배수되어, 옹벽블록 내부로 물의 유입을 방지하여, 옹벽블록의 내구성을 높이도록 한다.In addition, the rear wall of the retaining wall block is formed with a plurality of protruding drainage protrusions integrally,

'Drainage having a structure of' is integrally formed, the water flows along the back wall retaining wall block of the retaining wall, water is drained and flows along the drainage, preventing the inflow of water into the retaining wall block, Make the block more durable.

The retaining wall block has a cross-section in which the left and right widths become narrower from the front side to the rear side, and the rear surface of the retaining wall block forming the drainage protrusion forms a protrusion protruding left and right, so that water flowing to the rear of the retaining wall block Prevent entry into the retaining wall block.

And the bottom surface of the rear wall of the retaining wall block forms an inclined portion formed inclined inward, when the retaining wall block is formed while forming a step, the rear surface of the retaining wall block is connected along the top and bottom of the retaining wall block is formed by the inclined portion In order to prevent water from flowing into the retaining wall block, the durability of the retaining wall block can be maintained.

In addition, the construction paper slope nailed, the geogrid is provided with a ring formed along the opposite edges facing each other, each of the rings of the geogrid is fitted with a support, so that one end of the geogrid is bound to the retaining groove of the retaining wall block , The other end is constrained by connecting nails and connecting means to the slope, so that both ends of the geogrid and the reinforcement through the geogrid is easily made.

As described above, the present invention includes a retaining wall block having a hexahedron shape that forms a locking groove along the left and right widths of the front surface, and a geogrid including a plurality of rings integrally formed along one edge thereof; Form a base on the arranged construction floor; Depositing the retaining wall block along the formed base; A rear surface of the retained retaining wall block is installed so that the drainage induction pipe and the rubble are wrapped by the nonwoven fabric, and fills the soil between the nonwoven fabric and the slope; Inserting the support into the loop of the provided geogrid, and installing the support in the locking groove of the retaining wall block to install the geogrid; Assemble a retaining wall block above the installed retaining wall block; The retained wall block back is filled with non-woven fabric and rubble to cover the rubble; The process of installing the geogrid, masonry of the retaining wall block, and filling the rubble and soil wrapped in the nonwoven between the retaining wall block and the slope to the designed height; Placing the order mat and the soil in order on the retaining wall block and the filled soil; To complete the method of construction of the retaining wall by the formation of side openings; Geogrid reinforces the ground, prevents the inflow of water primarily by the order mat, and the rubble accumulated on the nonwoven fabric at the back of the retaining wall block, and the water flows down and drains along the drainage induction pipe. It is easy to prevent the loss of the soil, there is an effect of preventing the collapse of the retaining wall constructed.

’의 구조를 가지는 배수대가 일체로 구성되어, 시공된 옹벽의 옹벽블록 후면을 따라 물이 흐르되, 물은 배수돌기와, 배수대를 따라 흐르면서 배수되어, 옹벽블록 내부로 물의 유입을 방지하여, 옹벽블록의 내구성이 높은 효과가 있다.In addition, the rear wall of the retaining wall block is formed with a plurality of protruding drainage protrusions integrally,

'Drainage having a structure of' is integrally formed, the water flows along the back wall retaining wall block of the retaining wall, water is drained and flows along the drainage, preventing the inflow of water into the retaining wall block, The block has a high durability.

The retaining wall block has a cross-section in which the left and right widths become narrower from the front side to the rear side, and the rear surface of the retaining wall block forming the drainage protrusion forms a protrusion protruding left and right, so that water flowing to the rear of the retaining wall block It is effective to prevent the flow into the retaining wall block.

And the bottom surface of the rear wall of the retaining wall block forms an inclined portion formed inclined inward, when the retaining wall block is formed while forming a step, the rear wall of the retaining wall block is connected along the top and bottom of the retaining wall block formed by the inclined portion It is configured to prevent water from flowing into the retaining wall block, thereby maintaining the durability of the retaining wall block.

In addition, the construction paper slope nailed, the geogrid is provided with a ring formed along the opposite edges facing each other, each of the rings of the geogrid is fitted with a support, so that one end of the geogrid is bound to the retaining groove of the retaining wall block , The other end is constrained by the nail nailed to the slope and connecting means, there is an easy effect of both ends of the geogrid and reinforcement through the geogrid.

The present invention relates to a retaining wall block for retaining wall construction, and a method of constructing a retaining wall using the retaining wall block and a geogrid. A geogrid comprising a plurality of rings integrally is provided; Form a base on the arranged construction floor; Depositing the retaining wall block along the formed base; A rear surface of the retained retaining wall block is installed so that the drainage induction pipe and the rubble are wrapped by the nonwoven fabric, and fills the soil between the nonwoven fabric and the slope; Inserting the support into the ring of the provided geogrid, install the support in the locking groove of the retaining wall block to install the geogrid; Assemble a retaining wall block above the installed retaining wall block; The retained wall block back is filled with non-woven fabric and rubble to cover the rubble; The process of installing the geogrid, masonry of the retaining wall block, and filling the rubble and soil wrapped in the nonwoven between the retaining wall block and the slope to the designed height; Placing the order mat and the soil in order on the retaining wall block and the filled soil; To complete the method of construction of the retaining wall by the formation of side openings; Geogrid reinforces the ground, prevents the inflow of water primarily by the order mat, and the rubble accumulated on the non-woven fabric at the back of the retaining wall block, and the water flows down and drains along the drainage induction pipe, so the drainage of the constructed retaining wall To facilitate, and to prevent the loss of soil, it is possible to prevent the collapse of the retaining wall constructed.

The structure of the retaining wall block and the geogrid according to the present invention will be described as follows.

First, as shown in FIG. 3, the retaining wall block 10 is configured in the shape of a cube, and forms a fitting portion 11 which is opened up and down inside, and from left to right as it goes from front to back. By forming a narrower width, a narrower cross section is formed from the front side to the rear side.

In addition, the rear surface of the retaining wall block 10 is integrally formed with a protrusion 15 protruding in the left and right directions, the rear length including the protrusion 15 is preferably not exceed the front length, such a protrusion 15 prevents water flowing along the rear surface of the retaining wall block 10 from flowing into the retaining wall block 10.

In addition, a plurality of locking projections 12 protruding upwardly are formed at the upper portion of the retaining wall block 10, and the positions of the locking projections 12 are stacked on the retaining wall block 10 up and down, and the locking projections 12 are The retaining wall block 10 is preferably formed in a position where it does not interfere with each other. While the retaining wall block 10 is fitted, the fitting portion 11 forms a space in which the locking step 12 is fitted, The part 11 may not be penetrated and may be formed as a groove which does not receive the interference of the locking step 12.

In addition, the front of the retaining wall block 10 to form a locking groove 13 in the form of a straight parallel to the front surface, in detail, the locking groove 13 is supported in parallel with the front of the retaining wall block 10 (22) (22 ') can be inserted.

For reference, the support (22) (22 ') is fitted into the hook groove (13) in the retaining wall block 10 by fitting the ring 21 (21') of the geogrid 20 to be rearranged, Figure 2 and As shown in Figure 6, the support 22 (22 ') is formed to have a predetermined length in a variety of cross-sections, such as circular, square, and other polygons, it is preferable to use those excellent in durability, strength, bending strength, etc. For example, the support (22) (22 ') may be composed of a rod, a pipe, a square rod, and the like, the length is the same as the length of the locking groove 13 of the geogrid 20, or, It consists of a unit length so that a plurality of dogs are fitted along the locking groove 13.

In addition, a plurality of protruding drainage protrusions 14 are formed on the rear surface of the retaining wall block 10. Each of the drainage protrusions 14 is formed at regular intervals in left and right directions, but is formed to cross each other in an upper and a lower direction. desirable.

 In addition, the drainage protrusion 14 may be integrally formed while manufacturing the retaining wall block 10, or may be separately manufactured and attached to the retaining wall block 10 by using a synthetic resin to form a plate having the drainage protrusion 14. Use it.

’의 구조로 형성되어, 상기 배수돌기(14)에 조립되는데, 배수대(10′)의 상단은 옹벽블록(10)의 후면 상단에서 조금 아래 위치되도록 조립하고, 배수대(10′) 하단은 옹벽블록(10)의 하단과 일치하도록 한다.In addition, the drainage protrusion 14 further comprises a drainage basin 10 'integrally, and the drainage basin 10' has a predetermined width,

'Is formed in the structure, is assembled to the drain projection 14, the upper end of the drain (10') is assembled to be located slightly below the top of the rear of the retaining wall block 10, the bottom of the drain (10 ') It is to match the bottom of the retaining wall block (10).

In addition, as shown in Figure 4, the bottom of the rear wall of the retaining wall block 10 forms an inclined portion 16 to form a slope inward, when the inclined portion 16 is formed in the retaining wall block 10 The drainage basin 10 'to be applied is formed in a shape in which the lower end of the drainage basin 10' is also bent in accordance with the inclination of the inclined portion 16 of the retaining wall block 10, and the drainage basin 10 'is the retaining wall. It is configured to be assembled in close contact with the block 10.

For reference, the front surface of the retaining wall block 10 may be formed in various shapes in consideration of the aesthetics, and also by attaching the front decorative parts such as natural stone processed separately, artificial stone processed separately, other exterior materials integrally and aesthetics Increase

In addition, if the front height and the rear height of the retaining wall block 10 is formed to be the same, or formed to have a lower height toward the rear, when the retaining wall block 10 is stacked, the retaining wall block 10 as a whole It is inclined toward the side to prevent the masonry retaining wall block 10 from falling to the front side, which is preferably formed so as not to exceed 3 degrees.

’의 구조를 가지도록 제작되어 조립하거나, 또는, 옹벽블록(10)과 배수돌기(14)를 별도로 구성하여 부착할 경우, 배수돌기(14)가 형성된 판을 형성하면서 배수대(10′)를 일체로 형성할 수 있으며, 또는, 옹벽블록(10)을 구성하면서 배수돌기(14), 배수대(10′)를 모두 일체로 제작할 수 있다.Thus, the retaining wall block 10 forms up and down fitting portions 11 therein, a locking jaw 12 and a locking groove 13 are formed on the upper side, and a hexahedron having a drainage protrusion 14 formed on the rear surface thereof. The retaining wall block 10 is integrally manufactured by concrete (reinforcing bars can be reinforced inside the retaining wall block for strength reinforcement), and the drainage basin 10 'is separately'

When fabricated and assembled to have a structure of ', or when the retaining wall block 10 and the drainage protrusion 14 are separately configured and attached, the drainage stand 10' is formed while forming a plate on which the drainage protrusion 14 is formed. The drainage protrusions 14 and the drainage stand 10 'may be integrally manufactured while the retaining wall block 10 is formed.

Subsequently, the geogrid 20 will be described with reference to FIGS. 5 to 7, wherein the geogrid 20 is formed in a conventional mesh structure, and the ring 21, 21 ′ is formed along one edge or both opposing edges. It consists of a structure formed integrally, the support (22) (22 ') is a structure that can be fitted to the ring (21) (21'), the ring (21) (21 ') of the retaining wall block 10 described It has a cross-sectional size that can be fitted along the locking groove 13, the geogrid 20 is composed of a material of a conventional geogrid 20, and uses the excellent durability and strength.

In addition, the geogrid 20 has two types according to the position where the rings 21 and 21 'are formed. For convenience of description, as shown in FIG. 5, the rings 21 are formed along one edge. One geogrid 20 is referred to as one side ridge geogrid, and as shown in FIG. 7, the geogrid 20 formed by rings 21 and 21 'facing both edges is referred to as both side ridge geogrid and one side ridge geogrid. Form a ring 21 along one side edge, the length of which is configured in various ways, and both sides of the ridge grid constitutes a constant length.

The retaining wall construction method using the retaining wall block 10 and the geogrid 20 having such a structure includes a filling method and a nailing method according to the construction method, and the detailed construction method will be described in detail with reference to the process diagram of FIG. 16. .

First, the construction site arrangement step (S1) is a construction site for constructing the retaining wall (the construction site of the retaining wall is a place where the retaining wall construction such as slopes, cliffs, and cutouts is required, and the construction site will be described below for convenience of explanation. The slopes are arranged in a conventional manner, and the bottoms in contact with the slopes are partially dug to a certain depth to form a foundation 100 to be flattened.

In addition, in the construction site rearranging step (S1), when the method of constructing the retaining wall to be applied is a fill method, the slope is added in consideration of the position and earth pressure where the geogrid 20 is installed, as shown in FIG. Use it to dig more (to dig out the slope and remove the slope).

And base forming step (S2), as shown in Figure 1, to form a base 100 along the construction site floor to transfer the load of the retaining wall (retaining wall block, backfilled block, soil) to the bottom In the process, the foundation 100 is formed by a conventional method in consideration of the scale of the retaining wall to be constructed, and the method of filling the rubble 300 to form the foundation 100, or placing and hardening concrete without reinforcing the rebar. There is a method, or a method of placing and hardening concrete after reinforcing the reinforcing bar, and since the conventional method is applied to the foundation 100, a more specific construction method is omitted.

In addition, as shown in FIGS. 1, 12, and 13, the retaining wall block stacking step S3 is a step of stacking the retaining wall block 10 provided in the foundation 100 configured as described above. The silver drainage protrusion 14 is installed facing the slope, and arranged in one layer according to the size of the retaining wall block 10, or assemble in two or more layers, the retaining wall block 10 is a geogrid 20 Install as much as the height to be installed. (The height of retaining wall block to install at one time will be the location where the geogrid is installed.

In addition, when the retaining wall block 10 is stacked in two or more layers, as shown in FIGS. 13 to 15, the upper and lower retaining wall blocks 10 are stacked so as to be offset by half width (upper and lower retaining wall blocks). It is preferable to arrange the positions so that they cross each other by half width, and even if they are not completely half-width apart, the upper and lower positions of the retained retaining wall blocks do not coincide perfectly.) If it belongs to the fitting portion 11 of the block 10, and the drainage basin 10 'is configured separately, a drainage basin 10' is installed in each drain projection 14 of the retaining wall block 10 installed. do.

For reference, since the retaining wall block 10 forms a cross section in which the left and right widths thereof become narrower from the front side to the rear side, the retaining wall block 10 can be easily stacked even if the section for aligning the retaining wall block 10 is bent. When the retaining wall block 10 forms a cross section whose height decreases from the front to the rear, when the retaining wall block 10 is stacked while the retaining wall block 10 is stacked, the retaining wall block 10 is inclined toward the slope as a whole. Since the retaining wall block 10 has an effect of preventing the falling of the retaining wall block 10 to the front side, and the retaining wall block 10 is assembled to a position where the width of the retaining wall block crosses each half, the load is uniformly transmitted downward. By the locking step 12, even if the external force of the side has an effect of preventing the collapse of the retaining wall block 10.

In addition, there are various ways to stack the retaining wall block 10. As shown in FIGS. 1 and 8, the retaining wall block (10) is formed so that the front and lower front positions of the retaining wall block 10 to be aligned coincide with each other. There is a method of stacking the front surface of 10) in a plane-forming structure, or as shown in Fig. 11, when the retaining wall blocks 10 are stacked, the retaining wall blocks 10 are stacked so that a step is formed. There is a method of stacking the retained wall block 10 in a structure in which the front surface of the assembled retaining wall block 10 forms an inclination.

For reference, as shown in FIGS. 11 and 12, when the front and bottom front positions of the retaining wall block 10 are stacked with a step, the inclined portion 16 is formed at the lower rear side of the retaining wall block 10. When used, there is a characteristic that the connection is continuously made along the top and bottom of the retaining wall block 10 rear surface.

And when the retaining wall block 10 is stacked on the foundation 100, since the front surface of the retained retaining wall block 10 is lower than the actual ground, soil 500 and 501 are formed on the front and rear surfaces of the retained retaining wall block 10. Install at a certain height and make a commitment.

Subsequently, the back filling process (S4), as shown in Figures 1, 2, 10, 11 and 15, backfilled with rubble 300 and soil 500 to the rear of the retaining wall block 10 installed, , Rubble 300 is installed in the drainage induction pipe 200, the drainage induction pipe 200 and rubble 300 is wrapped by a nonwoven fabric 400, rubble 300 and soil 500 is a nonwoven fabric 400 It is a process of filling between the retaining wall block 10 and the slope to be separated by).

And by the back-filling process (S4), for the construction structure in which rubble 300 and soil 500 are separated by nonwoven fabric 400, the rubble 300 is filled first, the soil 500 is filled later, the method of soil Fill the 500 first, the method of filling the rubble 300 later, there is a method of filling the rubble 300 and the soil 500 by adjusting the height little by little.

First, the method of filling the rubble 300 first, followed by filling the soil 500 will be described in detail. Next, the retaining wall block masonry process (S3) is followed by the nonwoven fabric 400 on the rear of the retained retaining wall block 10. Is laid so as to have a predetermined width, so that both ends of the nonwoven fabric 400 to be installed along the longitudinal direction of the retaining wall block 10 so as to project up to the top of the retained retaining wall block 10, the retaining wall block (inside the nonwoven fabric 400) Install drainage induction pipe 200 along the back of the 10).

For reference, the drainage induction pipe 200 is a kind of pipe, a structure in which water flows along the surface, and can exit, using a perforated pipe having a plurality of perforated holes formed along an outer circumference of a general pipe. Or, use a conventional bundle bundle tube, focusing drainage plate, focusing drainage pipe and the like.

And, the rubble 300 to the top of the drain induction pipe 200 installed in the nonwoven fabric 400 (the rubble is to form a void in the nonwoven fabric, in addition to the rubble, using other aggregates or other materials that can replace the rubble It is wrapped with a nonwoven fabric 400 (or may cover the nonwoven fabric to the top of the filled rubble), and fills the soil 500 between the nonwoven fabric 400 and the slope up to the height of the retained retaining wall block 10. While firmly chopped, it is preferable to chop sufficiently using a compaction machine or compaction tool of the soil (500).

In addition, in the back filling process (S4), the method of filling the rubble 300 first, and later filling the soil 500, after the soil 500 is fixed to the height of the retaining wall block (10) is assembled to the slope, the retaining wall block (10) The non-woven fabric 400 is laid on the back, the drainage induction pipe 200 is installed, the rubble 300 is a method of filling.

And, in the back filling step (S4), the method of filling the rubble 300 and the soil 500 by gradually raising the height, the non-woven fabric 400 and the drainage induction pipe 200 is installed, the rubble 300 is a certain height After filling with, fill the soil 500 to a certain height on the slope side (fill the soil on the slope side first, and may be installed non-woven fabric and drainage induction pipe), and again filling the rubble (300) of the non-woven fabric 400 and By repeating the process of filling the soil on the slope side, the filling is carried out by the height of the retained retaining wall block 10.

On the other hand, in the back filling process (S4), while filling the rubble 300 and the soil 500, due to the weight, in order to prevent the fall, the space of the rubble 300 and the soil 500 to be filled can be separated Use a separate membrane and remove the membrane after backfill is complete.

In the geogrid installation step S5, as shown in FIGS. 2, 12, and 13, the support 22 is fitted to each ring 21 of the provided geogrid 20, and the geogrid 20 is installed. The combined support 22 is inserted into the locking groove 13 at each upper portion of the retaining wall block 10, and the installation of the geogrid 20 is different depending on the filling method and the nailing method.

First, the fill method, as shown in Figures 1, 2 and 11, the geogrid 20 is applied to one side of the geogrid grid, first, the earth pressure applied to the geogrid 20 in the construction site arrangement step (S1) The slope is in consideration, and one side of the geogrid is installed to the designed position. In this process, one end of the one side geogrid is constrained in the locking groove 13 of the retaining wall block 10, and the other side thereof is caused by earth pressure. It is a constrained structure.

In addition, the nailing method of the geogrid 20 is applied to both sides of the geogrid grid, and also has two embodiments with respect to the installation structure of the geogrid.

First, referring to the installation method of the geogrid 20 according to the first embodiment of the nailing method, as shown in Figs. 8 and 9, the nail 800 is driven along the slope, and the ring of the two high ridge geogrid ( 21 and 21 'are respectively fitted with supports 22 and 22', and one support 22 of the geogrid 20 is constrained by being installed in the locking groove 13 of the retaining wall block 10 and the other side thereof. The support 22 'and the ring 21' are connected to the end of the nail 800 installed on the slope and the connecting means 801.

Next, referring to the installation of the geogrid according to the second embodiment of the nailing method with reference to the construction side cross-sectional view of Figure 15 and the process diagram of Figure 17, injecting nail 800 along the slope, one side of the ring of both sides ( 21, the support 22 is fitted, one side support 22 of the geogrid 20 is installed in the locking groove 13 of the retaining wall block 10, restrained, the other side to some extent toward the slope, and then the top The geogrid 20 is connected to the end of the nail 800 installed on the slope and the connecting means 801 along the bent portion (edge).

For reference, since the structure and construction method of the nail 800 is applied to the conventional nail structure and nailing method, a detailed description of the structure and construction method is omitted, connection of the nail 800 and the geogrid 20 Connection means 801 to be used, such as wire, rope, reinforcing bar, strip geogrid.

Subsequently, as shown in FIGS. 1, 8, 10, and 11 to 15, the retaining wall block forming step S6 is a step of depositing the retaining wall block 10 on the installed retaining wall block 10. , The retaining wall block 10 is installed so that the drainage protrusion 14 faces the slope side, and according to the size of the retaining wall block 10, the retaining wall block 10 is assembled by a height to install the next geogrid 20, drainage When the base 10 'is configured separately, a drainage stand 10' is installed in each of the drainage protrusions 14 of the retaining wall block 10, and the description of the method and structure for installing the retaining wall block 10 will be described. Since the retaining wall block forming step S3 is described in detail, the description will be omitted.

Next, the back filling step (S7), as shown in Figures 1, 8, 10, backfilling the rubble 300 and the soil 500 to the rear of the retaining wall block 10 installed, but the rubble 300 Silver is wrapped by a non-woven fabric 400, rubble 300 and soil 500 is a process of filling between the retaining wall block 10 and the slope in a structure that is separated by a nonwoven fabric 400, this back filling process (S7) Unlike the backfill process (S4), except that the drainage induction pipe 200 is not installed, the construction method is substantially the same, so a description of the specific construction method is omitted.

Thus, if the height is not designed in the backfilling process (S7), in the case of the fill method and the nailing method according to the first embodiment, as shown in the cross-sectional view of Figure 1 and the process of Figure 16, the geogrid installation process (S5) to the backfilling process ( Repeat S7) until the designed height is reached.

On the other hand, in the case of the nailing method according to the second embodiment, after the back filling process (S7), the end of the geogrid 20 is maintained in a state protruding upwards, and in the construction sectional view of FIG. Similarly, after the backfilling step S7, a geogrid mounting step S5 'is added.

’ 의 형태로 매입되는 구조이다.Thus, the geogrid installation process (S5 ′) folds the geogrid 20 facing upwards to the front again (the bending position is at a height that corresponds to the backfilled height, ie, the height of the retained retaining wall block). The support 22 'is inserted into the ring 21' at the end thereof, and the support 22 'is fitted to the locking groove 13 of the retaining wall block 10. Geogrid 20 is a process of connecting the end of the nail 800 and the connecting means 801 along the bent portion (corner) in this way, the installation of the geogrid 20 according to the second embodiment of the nailing method When the geogrid 20 is installed, the side cross section of the constructed geogrid 20 is buried in the direction perpendicular to the slope of the middle portion of the geogrid 20, and the geogrid 20 is approximately viewed from the constructed side. '

It is a structure that is purchased in the form of '.

Next, if the retaining wall block forming step (S6) and the backfilling step (S7) described above are performed, and at this time, the height is not designed, the geogrid installation step (S5), the retaining wall block forming step (S6), and the backfilling step (S7) are performed. ), Geogrid installation process (S5 '), retaining wall block masonry process (S6) and backfill process (S7) is repeated to repeat the process to the designed height.

For reference, while retaining the retaining wall block 10, and backfilling, the general soil is put into the fitting portion 11 of the retaining wall block 10, the seed, plants, trees, etc. into the soil of the fitting portion 11 Planting can facilitate the vegetation on the entire retaining wall.

When the desired height is not achieved by the backfilling process (S7) by the filling method or the nailing method, the desired geogrid installation process (S5) (or the geogrid installation process (S5 ')) or the backfilling process (S7) is desired. It repeats until it reaches height, and when it becomes a designed height, next, the order mat installation process (S8) is performed.

The order mat laying step S8 is a process of laying the order mat 600 up to the retaining wall block 10 and the construction site, that is, the slope, as shown in FIGS. 1, 8, and 11. 600 is a waterproof sheet, it is preferable to use ordinary waterproof paper and waterproof sheet.

Next, the ground laying and compacting step (S9) is a process of laying the soil 500 on the installed order mat 600 and compacting with a compaction machine or compaction tool.

In addition, the side opening forming step (S10), as shown in Figs. 1, 8, and 11, by forming the side opening 700 in the compacted soil 500, the side opening 700 is constructed To form along the rear of the retaining wall block 10 at the top of the retaining wall immediately above, or along the base side (may be formed in both places), the side opening 700 is for draining rainwater and flow, side opening 700 When the inclination is formed in the direction in which) is formed, there is a characteristic that drainage is easier.

In the construction of the retaining wall, the retaining wall block 10 is formed on the front surface of the slope, and the rear wall of the retaining wall block 10 constitutes a nonwoven fabric 400 wrapped with the rubble 300, and the bottom of the rubble is a drainage induction pipe 200. And a state in which the rubble 300 is wrapped between the nonwoven fabric 400 and the ground, which is filled with soil 500, and the geogrid 20 is laid and buried along a predetermined height, but the geogrid 20 is The front surface is constrained by the locking groove 13 of the retaining wall block 10, the rear surface of the geogrid 20 is constructed in a structure that is constrained by the earth pressure of the nail (800) or soil (500).

Therefore, the geogrid 20 buried by the method of constructing the retaining wall according to the present invention serves to resist the earth pressure by the interaction force between the frictional resistance and the passive resistance between the soil 500, the retaining wall block 10 and the slope Increasing the tensile force inside the soil (500) filled in between, reinforcing the soft ground, both the front and rear of the geogrid 20 is constrained structure, reinforcing the ground of the construction of the retaining wall structure.

In addition, in the retaining wall structure by the method of constructing the retaining wall, rainwater prevents primary penetration by the order mat 600, and the water generated from the rainwater or the slope is introduced into the nonwoven fabric 400 including the rubble 300. Flowing downward, the water in the rear of the retaining wall block 10 flows down along the drainage protrusion 14, the water flows along the drainage 10 ', the rear of the retaining wall block 10 to the left and right Since the protruding protrusion 15 is formed, even if the retaining wall block 10 is assembled to cross each other in a half width, it prevents water or soil from being introduced into the retaining wall block 10, and the rear surface of the retaining wall block 10 is prevented. As water is drained, the durability of the retaining wall block 10 is prevented from falling.

In addition, in the case where the inclined portion 16 is formed at the lower rear side of the retaining wall block 10, the retaining wall block 10 is formed while the retaining wall block 10 is formed while the upper and lower steps are formed on the front surface. Since the connection of the rear of the (10) is continuously connected to facilitate the close contact of the nonwoven fabric 400 and the retaining wall block 10 rear accumulated in the rubble (300), the retaining wall block 10 rear (drainage projection and drain) Since the drainage of the water is made along, there is a feature that prevents water from flowing into the retaining wall block (10).

In addition, the water falling along the rear surface of the rubble 300 and the retaining wall block 10 of the nonwoven fabric 400 is introduced into the drainage induction pipe 200 to drain the water to the outside, the drainage of the water inside the constructed retaining wall structure There is an easy feature.

And the rubble 300 at the rear of the retaining wall block 10 to facilitate the drainage due to the voids, because the rubble 300 is wrapped in a non-woven fabric 400, to prevent the scattering (movement) of the rubble 300 To prevent the loss of the backfilled soil 500 between the rubble 300 and the slope, it is possible to prevent the collapse of the constructed retaining wall.

1 is a cross-sectional view showing a retaining wall constructed in accordance with the fill method of the present invention.

FIG. 2 is an enlarged view of portion A of FIG. 1; FIG.

3 is a perspective view of a retaining wall block according to the present invention;

4 is another exemplary view of the retaining wall block according to the present invention;

5 is a perspective view of a geogrid according to the present invention.

6 is an enlarged view of a portion B of FIG. 5;

Figure 7 is another illustration of a geogrid according to the present invention.

Figure 8 is a side cross-sectional view showing a retaining wall constructed by a first embodiment of the nailing method according to the present invention.

9 is a plan sectional view showing a retaining wall constructed by the first embodiment of the nailing method according to the present invention.

Figure 10 is a side cross-sectional view showing a retaining wall constructed by a second embodiment of the nailing method according to the present invention.

Figure 11 is a side cross-sectional view showing a retaining wall constructed by stepping the retaining wall block in step according to the present invention.

FIG. 12 is an enlarged view of a portion C of FIG. 11; FIG.

13 is a perspective view showing a construction process of the present invention.

14 is another perspective view showing a construction process of the present invention.

Figure 15 is a rear view showing a retaining wall block constructed and constructed in accordance with the present invention.

16 is a process chart according to the construction method of the present invention.

17 is a process chart according to a second embodiment of the nailing method according to the present invention.

[Description of Code for Major Parts of Drawing]

10: retaining wall block 13: hanging groove

14: drainage protrusion 20: geogrid

200: drainage induction pipe 600: order mat

Claims (10)

delete delete In a conventional known retaining wall block, The retaining wall block 10 forms a fitting portion 11 having an upper and lower inside, and a locking jaw 12 protruding upward from an upper surface thereof, but a locking groove 13 along the left and right widths of the front upper portion. ) Integrally,  The left and right widths of the retaining wall block 10 are formed to have a structure that gradually decreases from the front side to the rear side, but the rear side of the retaining wall block 10 forms a protrusion 15 protruding left and right. On the rear surface of the retaining wall block 10 further formed with a protrusion 15 protruding to the left and right, a plurality of protruding drainage protrusions 14 are integrally formed between the drainage protrusions 14.

By consisting of the retaining wall block is integrally provided with a drain (10 ') having a structure of, Water flowing along the rear surface of the retaining wall block is guided and flows along these drainage protrusions and drains to prevent the inflow of water into the retaining wall block and the retaining wall block for building the retaining wall, characterized in that to increase the durability of the retaining wall block. . The method of claim 3, wherein The bottom of the rear surface of the retaining wall block 10 further forms an inclined portion 16 inclined inwardly, and when the upper and lower retaining wall blocks 10 are formed while forming a step, the inclined portion 16 Masonry statue. By rear surface of the retaining wall block 10 to form a rear surface connected to each other continuously, Retaining wall characterized in that the water flowing along the rear of the retaining wall block is guided and flows along these drainage projections and drains to prevent the inflow of water into the space between adjacent retaining wall blocks and to increase the durability of the retaining wall block. Retaining wall block for construction. delete delete delete Construction site cleaning process (S1) to dig and clean the bottom and slope of the construction site; A foundation forming step (S2) of forming a foundation on the arranged bottom; A retaining wall block forming step (S3) of selecting and arranging and aligning any one of the retaining wall blocks of claim 3 or 4 prepared along the upper part of the foundation formed according to the forming step (S2); A drainage induction pipe is installed at the rear of the retained retaining wall block, and rubble is filled at the upper part of the drainage induction pipe, but the drainage induction pipe and the rubble are wrapped by a nonwoven fabric, and the retaining wall block and the slope are filled with soil between the nonwoven fabric and the slope. Backfilling step (S4) filling the gap; After completing the back filling step (S4), after preparing a conventional geogrid with a plurality of loops integrally formed along the edges, and then put a support in the ring of the geogrid, the support in the locking groove of the top retaining wall block A geogrid installation step (S5) of sandwiching and laying the geogrid; A retaining wall block forming step (S6) of arranging and arranging a retaining wall block of a next step on top of the retaining wall block assembled according to the retaining wall block forming step (S3); On the rear of the retaining wall block, the rubble is filled up to the height of the retaining wall block so as to be wrapped by the nonwoven fabric, and the backfilling process (S7) is performed to fill the gap between the retaining wall block and the slope with a chopped structure by filling the rubble between the nonwoven fabric and the slope. After repeating the geogrid installation process (S5) to backfill process (S7) to the designed height; An order mat laying step (S8) for laying the order mat with a retaining wall block installed at the end, a nonwoven fabric wrapped with rubble, and a filled and compacted soil; A ground laying and compacting process (S9) for laying soil by placing soil on the placed order mat; A side opening forming step of forming a side opening in the top soil compacted (S10); Retaining wall construction method using a retaining wall block and geogrid, characterized in that the step-by-step construction is completed. Construction site cleaning process for cleaning the floor and the slope of the construction site (S1); A foundation forming step (S2) of forming a foundation on the arranged bottom; A retaining wall block forming step (S3) of selecting and arranging and aligning any one of the retaining wall blocks of claim 3 or 4 prepared along the upper part of the foundation formed according to the forming step (S2); A drainage induction pipe is installed at the rear of the retained retaining wall block, and rubble is filled at the upper part of the drainage induction pipe, but the drainage induction pipe and the rubble are wrapped by a nonwoven fabric, and the retaining wall block and the slope are filled with soil between the nonwoven fabric and the slope. Backfilling step (S4) filling the gap; After completing the backfilling process (S4), nails are installed along the disc slope, and then, after preparing a conventional geogrid in which a plurality of rings are integrally formed along both edges facing each other, a support is formed on both rings of the geogrid. And the support of one side is installed in the engaging groove of the top retaining wall block, and the support of the other side is a geogrid installation process of laying the geogrid by connecting nails along the base slope as a connecting means (S5). ; A retaining wall block forming step (S6) of arranging and arranging a retaining wall block of a next step on top of the retaining wall block assembled according to the retaining wall block forming step (S3); On the rear of the retaining wall block, the rubble is filled up to the height of the retaining wall block so as to be wrapped by the nonwoven fabric, and the backfilling process (S7) is performed to fill the gap between the retaining wall block and the slope with a chopped structure by filling the rubble between the nonwoven fabric and the slope. After repeating the geogrid installation process (S5) to backfill process (S7) to the designed height; An order mat laying step (S8) for laying the order mat with a retaining wall block installed at the end, a nonwoven fabric wrapped with rubble, and a filled and compacted soil; A ground laying and compacting process (S9) for laying soil by placing soil on the placed order mat; A side opening forming step of forming a side opening in the top soil compacted (S10); Retaining wall construction method using a retaining wall block and geogrid, characterized in that the step-by-step construction is completed. Construction site cleaning process for cleaning the floor and the slope of the construction site (S1); A foundation forming step (S2) of forming a foundation on the arranged bottom; A retaining wall block forming step (S3) of selecting and arranging and aligning any one of the retaining wall blocks of claim 3 or 4 prepared along the upper part of the foundation formed according to the forming step (S2); A drainage induction pipe is installed at the rear of the retained retaining wall block, and rubble is filled at the upper part of the drainage induction pipe, but the drainage induction pipe and the rubble are wrapped by a nonwoven fabric, and the retaining wall block and the slope are filled with soil between the nonwoven fabric and the slope. Backfilling step (S4) filling the gap; After completing the backfilling process (S4), nails are installed along the base surface slope, and then, after preparing a conventional geogrid in which a plurality of rings are integrally formed along both edges, a support is fitted to one ring of the geogrid. Install the geogrid by inserting it into the hanging groove of the retained wall block, laying the other side of the geogrid to near the front surface of the slope, and bending the rest to the top, and connecting the bent portion with nail nailed along the base slope as a connecting means. Geogrid installation process (S5); A retaining wall block forming step (S6) of arranging and arranging a retaining wall block of a next step on top of the retaining wall block assembled according to the retaining wall block forming step (S3); A back filling step of filling the retaining wall block to the height of the retaining wall block so that the rubble is surrounded by the nonwoven fabric, and filling the rubble between the retaining wall block and the slope with a compacted structure to fill the soil between the nonwoven fabric and the slope; After completing the backfill process (S7), the support is fitted in the geogrid end ring is installed in a state bent to the top according to the geogrid installation process (S5) protruding to the upper, and retained wall block masonry step (S6) The support is inserted into the locking groove of the upper retaining wall block, and the construction is performed by connecting the nail to the slope using the connecting means at the bent portion of the geogrid, and the constructed geogrid is viewed from the side '

Perform the geogrid installation process (S5´), which is installed to have a structure that is embedded in the form of ',  The geogrid installation process (S5), retaining wall block masonry process (S6), backfilling process (S7), geogrid installation process (S5 '), retaining wall block masonry process (S6), backfilling process (S7) is repeated to the designed height After one; An order mat laying step (S8) of laying the order mat on top of the retaining wall block, the rubble-wrapped nonwoven fabric, and the filled and compacted soil; A ground laying and compacting process (S9) for laying soil on the installed order mats and compacting the soil; A side opening forming step of forming a side opening in the compacted top soil (S10); Retaining wall construction method using a retaining wall block and geogrid, characterized in that the step-by-step construction is completed.

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