KR100983086B1 - Retaining wall construction method using post structure and block - Google Patents

Abstract

PURPOSE: A retaining wall construction method using post structures and laminate blocks is provided to achieve double resistance against earth pressure and environmentally-friendly construction. CONSTITUTION: A retaining wall construction method comprises steps of: setting post structures(300), each of which comprises a bottom plate(310) and a column wall(320) installed on the top of the bottom plate, at regular intervals on the ground; setting laminate blocks(100) between the post structures, with both ends fixed and supported to the inner walls of the column walls; back filling back-filling soil in the rear of the laminate blocks and compressing it; and placing a grid(200) on the top of the covering soil.

Description

Construction method of retaining wall structure by post structure and laminated block body {RETAINING WALL CONSTRUCTION METHOD USING POST STRUCTURE AND BLOCK}

The present invention relates to a method for constructing a retaining wall structure by a post structure and a laminated block body. More specifically, by constructing a laminated block body using a block body and a grid so as to effectively resist the retaining wall structure against earth pressure, even if a fault occurs in the grid of the laminated block body so that it cannot be resisted by earth pressure, it is additionally supported by the post structure. The present invention relates to a method of constructing a retaining wall structure by using a post structure and a laminated block body that can be constructed in an eco-friendly manner by allowing a vegetation layer to be formed while being able to resist overlapping earth pressure.

Conventional reinforcement retaining walls have been widely used in retaining wall structures because of the advantages of relatively easy construction and economical retaining wall structures.

FIG. 1A is a cross-sectional view illustrating an installation state of such a conventional reinforced soil retaining wall.

The conventional reinforcement earth retaining wall 10 is largely connected to the reinforcement earth retaining wall block 11 and one side end of the block 11, the other side end is extended to the rear of the soil (20) geogrid is installed horizontally ( 12a, 12b, Geogrid) is a method of reinforcing the slope while stacking the retaining wall block (11) to the final height while compacting the backing soil on which the geogrid 12 is installed for each floor.

FIG. 1B shows an example of the block 11, FIG. 1C shows an example of a rigid geogrid 12a, and FIG. 1D shows an example of a soft geogrid 12b.

The retaining wall block 11 is usually manufactured by being molded into a mortar (or concrete) product, and a shear key 11a is formed to be stacked up and down through mechanical engagement, and a variety of geogrids including connecting rods and the like on the backing soil. It is common that the horizontal groove 11b and the vertical groove 11c are formed to be connected and installed by the connector.

The hard geogrid (12a) is made by connecting a planar form to each other by a connecting plate by a method of forcibly stretching high density polyethylene (HDPE), the soft geogrid (12b) is a lattice form by coating a high-strength polyester PVC on the fabric Molded with is mainly used. Such geogrids may also be referred to as fiber reinforcements.

The geogrid is integrally installed with the block by a connector such as a connecting rod such as one side portion across the horizontal groove (11b) or vertical groove (11c) of the block 11, or connecting rods, and is installed to extend to the rear of the rear soil.

However, such a conventional reinforcement soil retaining wall 10 is condensed as the ground soil 20 compacted over time after being built, and inevitably occurs when the ground soil is settled, the problem is the retaining wall block by this phenomenon Since geogrids 12a and 12b connected to (11) are laid to the rear of the rearing soil, the geogrids 12a and 12b also sink together with the rearing soil.

The geogrids 12a and 12b settle together with the backing soil, and the retaining wall blocks 11 connected to the backing soil 20 are directed toward the backing soil 20 so that the installation form of the retaining wall blocks 11 is deformed locally or excessively deformed. It is pointed out that this may be difficult to secure usability, or cracks may occur in the block, and the geogrid and the block may be disconnected from each other, which may cause a problem of failing to function as a retaining wall.

In addition, it is pointed out that the conventional reinforcement soil retaining wall is not applicable to the greening means such as vegetation layer at all in the front portion. Therefore, the necessity of developing a vegetation layer application technology of a laminated structure, which is easy to install the vegetation layer and can freely select various conventional vegetation materials as required, is also required. There was considerable difficulty in repairing defects, such as rebuilding over a wide range of damage or destruction. In order to effectively solve these problems, even when the grid is partially damaged, the laminated block body is supported by the post structure, which not only ensures the safety of earth pressure, but also allows the partial replacement and reconstruction of the damaged part. To meet the needs of the construction method.

In the present invention, in the retaining wall structure using the laminated block body and the grid, each block body is separately installed in a stacked structure so that each block body is individually supported by the post structure, thereby allowing the resistive earth pressure to overlap. ,

Vegetation layer is also to be simply formed on the front of the retaining wall structure, to provide a retaining wall structure that is environmentally friendly and aesthetics and excellent workability as a technical problem to solve the problem.

The present invention to solve the above technical problem

Post structure consisting of pillar wall installed on the bottom plate is spaced on the ground and installed at regular intervals,

Between the post structures are installed a laminated block body so that both ends are fixedly supported between the inner surface of the column wall from the bottom of the post structure,

Installing a grid extending rearwardly from the rear surface of the laminated block body while backfilling the backfill soil on the rear surface of the laminated block body stacked from the lower part of the post structure,

The laminated block bodies divided by the post structures are separated from the earth pressure acting by the grid, and the post structures share the earth pressure acting on each laminated block body.

In addition, in order to install the laminated block body between each of the post structures are fixed,

The locking groove is inserted into and fixed in the insertion hole formed in the inner side of the post wall structure of the post structure. By repeating the steps to be inserted between the post structures to be installed by stacking the laminated block body from the bottom, respectively fixed upwards.

In addition, the laminated block body

Upper vertical portion; An abdomen extending rearward from the bottom of the upper vertical portion; A block body formed of a stepped cross-sectional block formed by including a lower vertical portion extending downwardly from the abdomen is stacked up and down,

The upper vertical parts of the block body arranged up and down are positioned on the same vertical plane so that the space between the lower vertical part and the upper vertical part is opened, and the vegetation layer can be formed in the open space.

In addition, the installation of the post structure,

It is composed of a plate-shaped plate material so that the lower end of the column wall having the upper and lower optical cross-section is inserted and installed, the protruding block is formed on the upper surface of the front portion, and the lower surface on the upper surface spaced from the protruding block to the rear portion thereof. Install the bottom plate formed with the support block inclined to the top,

The lower end is supported on the bottom plate and is installed to extend upward, and the lower end of the column wall having the upper and lower optical end faces (the upper part is narrow and the lower part is a wide section) is blocked out between the protruding block and the supporting block. And installing to be inserted into the space (S).

In addition, the pillar wall body having an upper and lower optical cross section (the upper part is narrow and the lower part is a wide section) can be integrated in the bottom plate.

The lower end of the tension member is fixed to the bottom of the bottom plate with a fixture such as a fixing nut, and the tension member penetrates the column wall so that the tension member is fixed after being tensioned by a fixing unit such as a fixing nut at the front of the column wall. To be integrated.

According to the present invention, the laminated block body is fixedly installed on each post structure so that the laminated block body is not easily collapsed or damaged by the earth pressure acting, that is, the structure of the earth resistance resistor is structurally effective by allowing the post structure and the laminated block body to resist the earth pressure together. It was made possible.

In addition, the laminated block body can be improved in workability in the vertical stacking is excellent in workability and the vegetation layer can be formed on the front surface to enhance the aesthetics and environmentally friendly retaining wall structure construction is possible. In addition, it is easy to dismantle and facilitate maintenance of local damage.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Figure 1a and Figure 1b is a perspective view of the construction process and reinforcement block conventional reinforcement retaining wall.
Figure 2 is a perspective view of the structure of the retaining wall structure according to the present invention.
3A, 3B and 3C are construction sequence diagrams of the retaining wall structure according to the present invention.
4 is a construction of the retaining wall structure according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

<Load Resistance Mechanism of Retaining Wall Structure According to the Present Invention>

First, the retaining wall structure according to the present invention primarily resists the laminated block body 100 against earth pressure acting as shown in FIG. 2.

The resistance means is a grid 200 provided on the back of the laminated block body 100 first.

The resistance means of the grid 200 is a friction force of the grid embedded in the compacted cover. By this frictional force, the laminated block body 100 is to resist the earth pressure due to the backing soil.

However, this frictional force is settled when the backing soil located on the back of the laminated block body 100, the grid 200 is also settled together, so the friction force required for the laminated block body 100 is lost, so that the crack or collapse of the laminated block body Will occur.

However, if the laminated block body 100 is simply stacked, it will not cope with such a crack or collapse.

Secondly, the present invention allows the laminated block bodies 100 to be fixedly supported between the post structures 300 installed at regular intervals.

In other words, by fixing both ends of the laminated block body 100 between the post structures 300, even if the frictional force of the grid 200 installed in each laminated block body 100 is lost even if each laminated block body 100 Since it is fixed to the post structure 300 is to be able to resist the position and working earth pressure with the post structure.

In addition, since the laminated block body 100 is fixed to each of the post structures 300, even if a defect occurs in one stacked block body 100, it is possible to prevent defects such as the stacked block body being collapsed at once.

In addition, since the laminated block body 100 is divided into the retaining wall extension direction by the post structure 300, it can be seen that it can individually resist the earth pressure. There is an easy side.

Therefore, even when both ends of the laminated block body 100 are fixedly installed at the post structure 300, the method is adopted so that both ends of the laminated block body 100 are spread over the engaging rods separately installed in the post structure. It is possible to secure the castle, and the post structure 300 is also composed of the bottom plate 310 and the column wall 320, by using both ends of the column wall fixed to the column wall using a tension material on the bottom plate Integration allows for more effective load transfer and distribution.

<Retaining wall structure construction method using post structure and laminated block body>

3a to 3c illustrate the construction step of the retaining wall structure according to the present invention.

First, as shown in FIG. 3a, the post structure 300 composed of the column wall 320 installed on the bottom plate 310 is first spaced apart from the ground A to be installed at a predetermined interval, and all of these post structures are manufactured in a factory. It is preferable to use the one produced by the precast method.

The bottom plate 310 is composed of a plate-like plate material as shown in Figure 3a, a protruding block 311 is formed on the upper surface of the front portion (B1), the rear portion (B2) from the protruding block (311) It is used that the support block 312 is formed on the upper surface spaced apart.

In this way, a block-out space S is formed between the protruding block 311 and the support block 312 so that the lower end of the pillar wall 320 to be described below is inserted and installed.

At this time, the support block 312 is inclined inner surface 312a, the upper surface 312b and the outer surface 312c inclined from the lower end to the upper side so as to contact the lower side surface of the column wall 320 having an upper and lower light cross section to be described later. It is formed into formed blocks.

Inside the support block 312 is formed a through hole 312d is provided with a tension member 330 to be described later.

The pillar wall 320 is a pillar member having a width of upper and lower light as a whole, and a reinforcing wall portion 321 is formed at a lower portion thereof. The widened lower portion is fitted into the block-out portion S of the bottom plate 310.

That is, since the lower end of the pillar wall 320 is widened, it is to be supported while the contact area with the bottom plate 310 is increased to ensure a more reliable support force.

In this case, in order to more effectively secure the integrity of the pillar wall 320 and the bottom plate 310, the pillar wall 320 and the bottom plate 310 are coupled to each other by the tension member 330.

Accordingly, a through hole 322 is also formed in the column wall 320 to correspond to the through hole 312 d formed in the support block 312 of the bottom plate 310, and a tension member is formed in the through holes 312 d and 322. Insert it,

A lower end of the tension member 330 is fixed to the bottom of the bottom plate 310 by a fastener 331 such as a fixing nut, and the tension member penetrates the column wall and is fixed by a fixing unit 332 such as a fixing nut at the front of the column wall. Allow to settle after tension.

In addition, the inner surface (C) of the column wall 320 is formed so that the insertion hole 323 spaced up and down is formed in advance means for fixing the laminated block body 200 to be described later.

Accordingly, after the post structure 300 is installed on the ground, the laminated block body 100 is installed as shown in FIG. 3B so that both ends of the post structure 300 are fixedly supported between the inner surfaces of the column walls between the post structures 300. Done.

The laminated block body 100

Upper vertical portion 110;

An abdomen 120 extending rearward from a lower end of the upper vertical part 110; And

A lower vertical portion 130 extending downward from the abdomen 120; and a precast block body formed in a stepped cross section including the upper and lower layers.

The upper vertical portion 110 and the lower vertical portion 130 is a member in the form of a vertical plate, the abdomen 120 is also a member extending in a stepped cross section as a member extending rearward, as described above, the grid With the frictional force of, the load resistance of the post structure has the advantage that there is no problem in the load resistance even if manufactured in a thinner plate form.

At this time, the upper vertical portions 110 of the block body arranged up and down are positioned on the same vertical plane (P) so that the space S2 between the lower vertical portion 100 and the upper vertical portion 100 is opened. The vegetation layer 400 may be formed in the open space S2.

Thus, the vegetation layer 400 is able to receive the necessary nutrients and moisture from the rear portion by the space (S2) in communication with the front portion and the rear portion of the retaining wall structure.

Of course, the size and position of the space (S2) can be adjusted as needed so that the retaining wall structure can be installed in accordance with the landscape.

As described above, the laminated block body 100 is to install each block body in the post structure 300, respectively.

Looking at the installation method as described above, first, to form the closing plate (110a) on both end surfaces to allow the engaging grooves are formed on both end surfaces of each block body (100a).

These finishing plates may be formed together (manipulating the shape of the formwork) at the time of manufacturing each block body, or may be separately attached.

The lower surface of the closing plate (110a) is such that the locking groove 111a such as a semi-circular groove is formed.

The insertion rod 323 formed on the inner surface of the column wall 320 is inserted into the engaging rod 324, such as a steel bar, and protruded, so that the insertion hole 323 is inserted downward into the engaging rod 324. Simply each block body (100a) is to be fixed to the top in order from the bottom of the column wall (320).

The locking grooves 111a and the locking rods 324 are laminated blocks of the post structure 300 so as to secure a fixed supporting force for each of the block bodies 100a to resist by the earth pressure action by the backfill soil. It can be seen that together with the (100) to share the earth pressure.

In addition, since the locking rods and the locking grooves are installed in the respective block bodies, even if one block body is damaged by earth pressure, the other block bodies are not affected. Therefore, the block bodies are prevented from being broken or collapsed at once. Able to know.

Each block body 100a is stacked one by one from the bottom of the post structure 300, as shown in FIG. 3C, each time one is installed. The back fills up and makes a pledge.

In addition, the grid 200 is installed on the top of the covered soil, and the grid 200 is fixed to the rear surface of each block body, thereby installing the laminated block body 100 of the present invention.

Thus, a plurality of post structures 300 are spaced apart from each other and installed at regular intervals, and the final retaining wall structure is illustrated by installing the stacked block body 100 and the grid 200 according to the present invention between the post structures 300. As shown in Fig. 4, it can be seen that the vegetation layer 400 is formed on the front wall of the retaining wall, and the laminated block body resisting earth pressure by the grid 200 by the post structure 300 ( It can be seen that 100) is installed.

100: laminated block 100a: block
110: upper part vertical 120: abdomen
130: lower vertical portion 200: grid
300: post structure 310: bottom plate
320: column wall 400: vegetation layer

Claims (5)

Post structure consisting of pillar wall installed on the bottom plate is spaced on the ground and installed at regular intervals,
Between the post structures are installed a laminated block body so that both ends are fixedly supported between the inner surface of the column wall from the bottom of the post structure,
Earth pressure acting on the laminated block bodies separated by the post structure, including installing a grid extending rearward from the rear surface of the laminated block body while covering the backfill soil sequentially on the rear surface of the laminated block body laminated from the post structure. In addition to the separation resistance against each other, so that the post structure to share the earth pressure each laminated block is burdened,
The installation of the laminated block bodies between the post structures is fixed so that the fixing rods are inserted into the pre-formed insertion holes on the inner surface of the post wall structure of the post structure, and the closing plate having the locking grooves formed on the lower surfaces is preliminarily formed at both end faces. By repeating the step of inserting the locking groove of the formed laminated block body into the locking rod of the column wall body, the laminated structure and the post-structure and laminated to the upper structure while being laminated from the bottom, respectively fixed between the post structures Retaining wall structure construction method by block body. The method of claim 1, wherein the installation of the post structure,
The lower end of the column wall body 320 having an upper and lower optical cross section is composed of a plate-like plate to be inserted and installed, a protruding block 311 is formed on the upper surface of the front portion, the protruding block 311 from the Install the bottom plate 310 formed with a support block 312 inclined from the bottom to the top on the upper surface spaced to the rear,
A lower end is supported on the bottom plate and is installed to extend upward, and the lower end of the column wall 320 having an upper narrow bottom end surface (the upper part is narrow and the lower part is a wide section) is supported by the protruding block 311. Retaining wall space between the block (312) is installed so as to be inserted; Retaining wall structure construction method by the post structure and laminated block body comprising a. The pillar wall body of claim 2, wherein the column bottom body having an upper and lower optical cross-section (the upper portion is narrow and the lower portion is a wide cross section) is integrated with the bottom plate.
Fixing the lower end of the tension member with a fastener 331 such as a fixing nut on the bottom of the bottom plate,
The tension member penetrates the column wall to be fixed after tension by a fixing device such as a fixing nut in the front portion of the column wall,
A method of constructing a retaining wall structure using a post structure and a laminated block body, wherein the bottom plate and the column wall body are integrated with each other. delete The method of claim 1, wherein the laminated block body
Upper vertical portion; An abdomen extending rearward from the bottom of the upper vertical portion; A block body formed of a stepped cross-sectional block formed by including a lower vertical portion extending downwardly from the abdomen is stacked up and down,
The upper vertical parts of the block body arranged up and down are located on the same vertical plane so that the space between the lower vertical part and the upper vertical part is opened, and the vegetation layer is formed in the open space. A retaining wall structure construction method using a post structure and a laminated block body.

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