KR20180022214A - Method for constructing road structure using light weight cellular concrete and drain belt - Google Patents

Abstract

The present invention relates to a method for constructing a road structure by using lightweight mixed soil and a drain belt. The method for constructing a road structure by using lightweight mixed soil and a drain belt is to construct a strong road structure (expansion road, a sidewalk, a retaining wall, and a green space) by using a drain belt with excellent drainage performance and lightweight foam mixed soil with high strength. According to the present invention, the method for constructing a road structure by using lightweight mixed soil and a drain belt includes: a first step of excavating a base to prepare a space for construction of the expansion road; a second step of constructing an expansion layer by alternatively repeating installation of the drain belt including multiple drainage paths connected to the outside and placement of the lightweight mixed soil from the lower side toward the upper side at a predetermined height from the bottom of the space formed by the excavation in the first step; and a third step of installing a side gutter on the upper part of an expansion unit constructed in the second step and constructing a pavement layer by being engaged with a road of the base. In the second step, the drain belt is installed from the inner side of the base toward an edge, and an end on the edge is installed to be inclined downward. Also, a drainpipe draining water guided and drained along the drain belt by being connected to the end of the edge is constructed. The retaining wall is installed on the end on the edge of the drain belt. The lightweight foam mixed soil formed of the soil, the water, a hardening agent, and air bubble mixed with each other is placed on the drain belt installed in the lower part and the inner side of the retaining wall.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a method of constructing a road structure using a lightweight bubble mixture soil and a drain belt,

The present invention relates to a method of constructing a road structure, and more particularly, to a method of constructing a solid road structure (an extension road, a sidewalk, a retaining wall, a green space, etc.) by using a lightweight bubble mixed lightweight and high- The present invention relates to a method of constructing a road structure using a lightweight bubble mixture soil and a drain belt.

Generally, a road is composed of a clay body having a predetermined height of soil and flattening an upper portion of the clay with a predetermined width, and a road portion packed with a predetermined thickness on an upper flat surface of the clay body.

In order to extend the pavement of such a structure, an additional paper is usually provided so as to secure a space for expanding the road, and then soil is piled up on the additional paper so that the additional clay portion extending from the first clay soil portion, And an extended road portion formed by being packed so as to extend from one end of the road portion is constructed thereon.

The road extension process according to the above road extension method will be described in more detail as follows.

First, the first step is to add additional paper as much as a desired width in order to secure the space required for road expansion, or to make a tread for the construction of the extended road portion in connection with the suspension on the periphery (slope) of the suspension Since the latter is related to the latter, the following description will be made by taking as an example the case where the surroundings of the article are formed after the tearing.

The upper surface of the clay soil is flattened by using a compacting roller equipment or the like and the compaction operation for compressing the clay so as to have a dense density is repeatedly carried out, Perform the operation.

After completion of the embankment, all processes are completed by packing the embankment.

However, since the road expansion method according to the prior art uses the earth as the embankment, when the ground is soft ground, consolidation settlement due to the weight of the soil occurs, and as a countermeasure thereto, .

Korean Patent No. 10-0411311

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a lightweight bubble-mixed soil having lightweight and high strength characteristics and a drainage belt excellent in drainability, The present invention provides a method of constructing a road structure using a bubble mixture soil and a drain belt.

A method of constructing a road structure using a lightweight bubble-mixed soil and a drain belt according to the present invention includes a first step of disposing a joint to provide a space for construction of an extension road; A second step of repeating the installation of the drainage belt and the placement of the lightweight bubble-mixed soil from the bottom surface of the space formed by the turbine in the first step alternately and repeatedly from the bottom to the top to construct the expansion layer; And a third step of installing a sidewall on an upper part of the expansion layer constructed in the second step and constructing a package layer in conjunction with the road surface of the sphere, And a drain pipe for drainage of water introduced and drained along the drain belt in conjunction with the edge side end is installed, and a drain pipe for drainage of the drainage water is installed along the edge side end, And a lightweight bubble mixed soil in which water, fire, and air bubbles are mixed is placed on the drain belt installed on the lower part and the inside of the retaining wall.

According to the method of constructing the road structure using the lightweight bubble-mixed soil and the drain belt according to the present invention, the lightweight bubble-mixed soil has a higher compressive strength than that of the soil but is interpreted as soil instead of a rigid body. It is possible to construct a rigid structure by high strength properties and to secure the stability of the structure by draining water penetrating into the structure (expansion road, retaining wall, various clay layer, green space etc.) through the drain belt quickly. .

1 to 9 are process drawings of a method of constructing a road structure using a lightweight bubble-mixed soil and a drain belt according to the present invention.
10 and 11 are a perspective view and a front view, respectively, of a drain belt applied to a method of constructing a road structure using a lightweight bubble-mixed soil and a drain belt according to the present invention.
12 and 13 are diagrams comparing a road structure using a lightweight bubble-mixed soil and a drain belt according to the present invention and a conventional expansion road embankment structure.
14 is a view showing an example in which a road structure using a lightweight bubble-mixed soil and a drain belt according to the present invention is applied to a cut slope;
15 is a view showing an example in which a road structure using a lightweight bubble mixture soil and a drain belt according to the present invention is applied to an alternate backfill portion.

The method for constructing a road structure using a lightweight bubble-mixed soil and a drain belt according to the present invention comprises the steps of installing a tear-and-drain belt, installing a retaining wall, and pouring a lightweight bubble mixed soil, The installation process of the lightweight bubble-mixed soil is shown and explained by taking as an example the installation of the drain belt and the placement of the lightweight bubble-mixed soil alternately from the lower part to the upper part.

First, a drain belt and a lightweight bubble mixture material used in the present invention will be described.

1. Drain belt.

As shown in FIGS. 10 and 11, the drain belt 10 is formed of a plate-shaped material that absorbs water and has first and second inflow portions 13 , 14) are arranged in a zigzag shape having different heights.

The first and second drainage passages 11 and 12 have a structure in which both sides in the longitudinal direction are opened. Accordingly, the first and second drainage passages 11 and 12 absorb the surrounding water, ).

11, the first drainage passage 11 is disposed at the lower portion and the second drainage passage 12 is disposed at the upper portion of the first drainage passage and alternately arranged in zigzag form along the width direction.

The first and second drainage passages 11 and 12 are each preferably circular, and the portion to which the first and second inlet portions 13 and 14 are connected is opened.

The first and second inlet portions 13 and 14 are formed along the longitudinal direction so as to be connected to all the portions of the first and second drainage passages 11 and 12.

The first inlet portion 13 is arranged along the second drainage passages 12 with a width smaller than the diameter of the first drainage passage 11, one side (lower portion) communicates with the outside, and the other side (upper portion) And is connected to the drainage channel (11) to introduce water into the first drainage channel (11).

The second inlet 14 is smaller than the diameter of the second drain 12 and is connected to the second drain 12 while opening toward the lower side as opposed to the first inlet 13.

2. Lightweight bubble mixture.

It is composed of soil (construction soil, clay, dredged soil, etc.), water, fire (cement, etc.), and air bubbles that contain water content and has characteristics of light weight and high strength It has high flow properties at the time of manufacture, but has the characteristics of a material which becomes gradually hard after manufacture.

, 일축압축강도 100~1,000

, 투수계수

~

cm/s의 특성이 있고, 고화재와 기포제의 적정한 배합조정을 통해 다양한 특성의 제품이 생산된다.The lightweight bubble-mixed soil has a unit weight of 6 to 12

, Uniaxial compressive strength 100 to 1,000

, Permeability coefficient

~

cm / s, and various properties are produced through proper combination of fire and foam.

High strength and light weight (30 ~ 60% of general soil weight) of lightweight bubble-mixed soil is effective for reducing self weight and earth pressure, and can be used as filler or backfill material on soft grounds .

The lightweight bubble-mixed soil is preferably a mixture of 40 to 50 wt% of soil (raw soil), 35 to 41 wt% of water, 13 to 17 wt% of solid fire and 1 to 3 wt% of foaming agent, preferably 45% 38% water, 15% fire and 2% foaming agent, and their proportion is adjusted according to the target strength and unit weight.

Soil (raw soil) is made of fine clay soil (construction soil, dredged soil, etc.) with a diameter of 10 mm or less (1 to 10 mm) so as to control the unit weight and separation of materials. The water used in the mixing can be fresh water or sea water, and the foaming agent uses a vegetable or animal surfactant system, and the mixing ratio is a ratio for achieving this purpose.

1. Tear-off (see Fig. 1).

The body (1) is inclined from the upper part to the lower part so that the cross-sectional area becomes wider as it goes down. An extension part is formed on the inclined part and a space for constructing the extension part is provided first through a tearing machine.

In Fig. 1, the imaginary line indicates the inclined plane of the body 1 before the terra cotta work, and the solid line indicates the inclined plane formed by the terahertz wave.

When the tearing is completed, a space in which the inclined surface 2 and the bottom surface 3 are connected to each other is formed on one side of the body 1. The edge of this space is the location where the retaining wall is installed.

2. Construction.

The first stage construction consists of installing a single stage drain belt - installing a retaining wall panel and casting lightweight bubble mixed soil.

2-1. Install a first stage drain belt (see FIG. 2).

A first stage drain belt (10-1) is provided on the bottom surface (3) formed by the turfing space.

It is preferable that the drain belt 10-1 induce and drain the seeped water in the interior of the upper part after the lightweight bubble mixed soil is laid on the upper part and are inclined downward toward the drainage means. And the first stage water pipe 30-1 is installed in a direction perpendicular to the first stage drain belt 10-1 (longitudinal direction of the body 1), and the outlet end is connected to the drainage system to drain water The concrete construction method is as follows.

A drain pipe installation portion 30-1 (in the form of a sidewall opening toward the upper portion) having a height lower than the floor surface 3 is formed at the edge of the bottom surface 3 of the body 1. The drain pipe installation part 30-1 is formed along the longitudinal direction of the body 1. [

A first-stage drain pipe 30-1 is installed in the first-stage drain pipe installation section 30-1.

The drain belt 10-1 of the first stage is laid over the drainage pipe installation portion 30-1 of the first stage from the end of the bottom surface 3. At this time, So that one side end of the drain belt 10-1 is brought into close contact with the right angle face of the sleeve 1 and the other end side is connected to the drain pipe 20-1. For example, in order to guide the water introduced along the drain belt 10-1 into the drain pipe 20-1, a belt hole for communicating the inside and the outside is formed in the drain pipe 20-1, Is inserted into the belt hole so that the discharge end of the drain belt (10-1) is arranged in the drain pipe (20-1). It is also possible to fix the drain belt 10-1 by installing an anchor or the like after the drain belt 10-1 is unfolded and installed.

The drain belt 10-1 is installed without inclination and only the other end is inclined downward toward the drain pipe 20-1 (the other end is bent so as to face the bottom, gradually inclined downward toward the other end, etc.) It is possible to smoothly induce drainage, and of course, downward inclination as a whole from one side to the other is also possible.

According to the present invention, a retaining wall is formed on the front portion of the extension portion, and the foundation block 40-1 is installed on the drain pipe installation portion 30-1 for installing the retaining wall.

The foundation block 40-1 is a foundation for supporting a single-stage retaining wall panel described later, and is preferably a concrete block.

The drain belt 10-1 may be provided over the whole area of the bottom surface 3 and may be provided at regular intervals along the longitudinal direction of the body 1.

2-2. Install the retaining wall panel and put the lightweight bubble mixed soil (see Fig. 3).

The first stage drain pipe installation part 30-1 is returned to the ground (lightweight bubble mixed soil is also possible) and a one-stage retaining wall panel 40-2 (precast concrete block) is placed on the foundation block 40-1 Install it.

The one-step retaining wall panel 40-2 is higher than the one-step paved layer, in other words, the one-step paved layer is laid down to a lower height than the one-step retaining wall panel 40-2.

A lightweight bubble-mixed soil is placed on the top of the first stage drain belt 10-1 to form a single tier layer 50-1.

This completes the construction of the first stage.

It is also possible to provide a clad in the inclined portion on the outer side of the first-stage retaining wall panel 40-2 after the completion of the first-stage construction.

3. Construction of 2nd stage.

The second stage construction consists of two stages of drainage belt installation (Fig. 4) - installation of a retaining wall panel and a lightweight bubble mixing soil installation (Fig. 5) above the first stage construction layer.

3-1. Two-stage drain belt installation (Fig. 4).

A two-stage drain belt (10-2) is disposed on the first piercing layer (50-1).

The second stage drain belt (10-2) is a device for guiding and draining water inside the pouring layer (50-2) by the lightweight bubble mixture pouring on the upper part.

Two stages of drainage belts 10-2 are provided in the same manner as the first stage of the drainage belts 10-1 and two stages of drainage pipes 10-2 are provided in a position connected to the drainage stages of the second stage drainage belts 10-2. (30-2) is formed in the shape of a groove opening upward, and a two-stage drain pipe (20-2) is installed there.

The drain means of the second stage drain belt 10-2 is provided so as to be connected to the inside of the second stage drain pipe 20-2.

The inlet end of the second stage drain belt 10-2 is provided in the same manner as the first stage drain belt 10-1 and is slid at a right angle to the slope 2 so as not to float from the slope 2 of the article 1 End side of the drain belt 10-2 is brought into close contact with the face of the right side of the body 1.

3-2. Installation of retaining wall panel and installation of lightweight bubble mixed soil (see Fig. 5).

The two-stage drain pipe installation portion 30-2 is returned to the ground, and the two-stage retaining wall panel 40-3 is installed on the one-stage retaining wall panel 40-2.

The two-stage retaining wall panel 40-3 is higher than the two-tiered pile layer 50-2, and may be higher than the entire height of the expanded portion constructed by the present invention. That is, it is possible to install two retaining wall panels, and it is possible to install five, such as five, in the same manner as the drain belt, or to install one.

Lightweight bubble-mixed soil is placed on the upper portion of the second-stage drain belt 10-2 (by piping, transporting, pouring, etc.) to form the second tiered layer 50-2.

This completes the construction of the second stage.

The drainage belt installation (including the drainage pipe construction) - the lightweight bubble mixed soil installation process can be repeated to construct various layered structures corresponding to the construction site. As shown in FIG. 6, the five stages of drainage belts 10-1, 10-2, 10-3, 10-4, and 10-5) and four stages of piling layers 50-1, 50-2, 50-3, and 50-4.

Fig. 7 is a side view showing the installation state of the five stages of drain belts 10-1, 10-2, 10-3, 10-4, and 10-5. The five stages of drain belts 10-1 and 10-2 , 10-3, 10-4, and 10-5) are preferably installed in a zigzag fashion to reduce drainage efficiency while reducing the amount of material.

4. Packaging (see Figures 8 and 9).

The fifth stage drain belt 10-5 is covered with a lightweight bubble mixed soil (soil is also possible), and a sidewall 60 is installed on the inside of the retaining wall panel 40 for draining the road surface.

The packaging layer 70 is constructed from the receptacle 60 to the existing road pavement layer 4.

The packaging layer 70 can be installed in various ways such as a field installation type, a deck (wooden, concrete panel, etc.) installation type, and the type of the packaging material and the thickness of the packaging layer 70 are the same as those known in the road surface packaging field.

12 and 13 illustrate the construction of a road structure in the same assembly. Fig. 12 shows the method of the present invention and Fig. 13 shows the conventional method.

As shown in FIG. 13, in the past, when an expansion road is installed on a soft ground where the bearing capacity is insufficient, an additional site is required for the embankment, and a plurality of vertical drainage materials are installed in the ground to improve the soft ground. in need.

In contrast, as shown in FIG. 12, since the slope part of the article is partially eroded and the expansion road is constructed through the embankment of the lightweight foamed composite soil, the addition of the additional site and the installation of the vertical drainage material are unnecessary, It is very economical in that it uses lightweight bubble-mixed soil and also has the effect of shortening the air. In particular, the present invention is capable of constructing expansion roads with greater economical efficiency and better workability than conventional ones, but with a wider width than conventional ones.

14 and 15 illustrate another example to which the present invention is applied. FIG. 14 shows a road structure constructed on a cut slope of a road. Lightweight foamed composite soil has a smaller unit weight than a general fill material, So that the drain belt can effectively prevent the increase of the water pressure and the self weight by eliminating the ground water and the water in the embankment flowing out from the slope portion.

Fig. 15 shows construction of an alternate backfill, in which a road structure (backfill portion) using a lightweight bubble-mixed soil and a drain belt is constructed from a soft ground at the rear of the alternation, and a lightweight bubble- And drains the water quickly through the drain belt, thereby suppressing the residual water level in the lightweight bubble mixed soil. As a result, it keeps the target weight of the backfilled ground effectively preventing settlement of the lower soft ground.

1: article, 10: drain belt
20: water pipe, 30: water pipe installation part
40: retaining wall, 50: pit layer
60: Socket, 70: Packing layer

Claims (4)

A first step of erecting the article to provide a space for installation of the extension road;
The installation of the drainage belt having a plurality of drainage passages communicating with the outside from the bottom surface of the space formed by the turbine in the first step and the installation of the lightweight bubble mixed soil are repeated alternately from the bottom to the top, A second step of constructing;
And a third step of installing a sidewall on an upper portion of the extension formed in the second step and constructing a package layer in connection with the road surface of the sphere,
The second step is to install the drain belt in the direction from the inside to the edge of the body so that the end side end portion is inclined downward, while the water which is inductively drained along the drain belt in conjunction with the edge side end portion is drained A drainage pipe is installed on the drainage belt, a retaining wall is provided at the end of the drainage belt, and a lightweight foamed composite soil is formed by mixing soil, water, fire, and air bubbles on the drain belt and the retaining wall Wherein the lightweight bubble-mixed soil and the drain belt are used to construct a road structure. The method of claim 1, wherein the second step comprises fixing the end portion of the drain belt by the mixture and the lightweight bubble mixture soil. The method according to claim 1 or 2, wherein the second step comprises securing the panel to the side of the drain pipe to construct a retaining wall, and connecting the panel and the drain belt to fix the panel. A method of constructing a road structure using. The drainage belt according to claim 1 or 2, wherein the drainage belt comprises a first and second inflow portions (13, 14) formed in a plate shape and absorbing water and opening upward and downward from one side to the other, Wherein the first drainage channel is disposed at a lower portion of the second drainage passage and the first drainage passage is disposed at a lower side of the second drainage passage, Wherein the second drainage passage is formed at an upper portion of the first drainage passage and the second inlet portion is formed at a lower width than the first drainage passage and the second drainage passage is formed at a lower width than the first drainage passage, And the drain is formed as a flow path opening downward between the first drainage paths to drain water to the drainage pipe. .

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