KR101010660B1 - A groundcutted area reinforcement method for stability procure - Google Patents

Abstract

PURPOSE: A cut embankment slope reinforcement method for the improvement of stability is provided to improve the stability of a cut embankment slope by preventing the loss of the soil due to rainwater. CONSTITUTION: A cut embankment slope reinforcement method for the improvement of stability comprises following steps. A cut embankment slope is evenly compacted. The spot to form a hole for the insertion of a stiffener is marked and punched(S1). The stiffener is inserted into the hole and filler is injected thereinto for the soil stabilization(S2). A soil particle support member is spread from the top of the cut embankment slope to the bottom of the cut embankment slope, so the connection part is overlapped and connected.

Description

A groundcutted area Reinforcement Method for stability procure}

The present invention relates to a method for reinforcing cut soils, and more particularly, to prevent bending loss of members and to prevent loss of grains and eating habits, which are strong nets against bending stress (bending strain) installed on slopes of cut soils. The present invention relates to a cut soil reinforcement method that can secure stability by using a ground support member having strong ground support to combine with a reinforcement of a nail or a release bar.

In general, as a reinforcement method for preventing soil loss or falling rocks on the cut slopes of roads or river banks, which are generated during various civil works, a wide and low mattress gabion method, concrete Various methods are known, such as the grid method.

In the case of the mattress-gebion method, the mattress cannot exert friction force with the cut soil surface, so the problems of stability such as fullness and sliding caused by hydraulic pressure and soil pressure of the ground and material costs due to filling and transportation of roads in operation There are problems such as a lot of control and construction period.

In addition, the vegetation method using vegetation mat fixes the ridge net and vegetation mat on the slope, and then fills vegetation soil mixed with various plant seeds, fertilizer, soil stabilizer, and the like to reinforce the slope. In addition, since the vegetation mat is not in close contact with the soil on which the vegetation mat is sloped, the bearing capacity for supporting the soil is weak, and in the rainy season, gradual sliding due to the loss of fine particles being swept away from the rainwater causes the soil to collapse. There is a problem.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is good adhesion to the cut soil surface and can support the soil stiffener support member, and the strength to the bending stress (bending deformation) is The strong bending deformation prevention member is installed to strengthen the bearing capacity with the cut soil so as to prevent the loss of sand due to rain during the rainy season, thereby ensuring the stability of the cut soil. It is to provide a reinforcement method.

Another object of the present invention is to reinforce the cut soil slope, which can be installed quickly, easily, and firmly the soil support member and the bending deformation preventing member between the reinforcement member and the reinforcement member already installed on the cut soil surface without traffic control of the road. It is to provide a method.

In order to achieve the above object, the present invention provides a method of reinforcing the cut soil, which is to subside the cut soil, and evenly slids the soil to prevent sliding phenomenon of the granules. Marking on, and drilling the hole by selecting the drilling equipment suitable for the site conditions on the marking portion (S1); Inserting a reinforcing material into the hole, and firmly injecting filler to stabilize soil (S2); Expanded from the top to the bottom of the soil support member, which forms a three-dimensional structure in which the fiber yarn is tightly entangled and formed so as to form an elastic space that is well-fitted to accommodate the length and width of the cut soil slopes. By connecting the joints, the empty space accommodates the granules to prevent the loss of the granules and prevents the passage of water. The roots are intertwined and intertwined with the intertwined three-dimensional fibrous yarn when providing the dietary meal. Installing to work (S3); As the upper surface of the stiffener support member, the bending deformation preventing member formed of a high-strength net resistant to bending deformation is unfolded from the top to the bottom, so that the section between the reinforcement and the reinforcement installed on the cut soil and the reinforcement is not installed. Step to install the sieve support member to be in close contact with the ground without bending deformation and at the same time to support the strength is evenly and firmly so as to prevent scour phenomenon (S4); The support member of the stiffener support member and the bending deformation preventing member and the reinforcement member to be integrated, and at the same time, the support force of the reinforcement member has resistance against the sliding force of the torch, and transfers the support force to the cut soil to the whole to secure the stability of the slope. Combining the binding port with the head of the reinforcing material to bind the acupressure (S5); Characterized in that comprises a.

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As described above, the present invention can exert frictional force due to close contact with the ground, and at the same time, the support member and the flexural deformation of the stiffness strong against flexural stress, which can achieve a solid working of the space and the eating habits to accommodate the cultivator By strengthening the bearing capacity of the cut soil through the prevention member, it is possible to prevent the loss of the soil particles due to the rainwater flowing during the rainy season, and to prevent scour and remnants and small rocks that may occur between the reinforcement and the reinforcement. It works.

In addition, the present invention has the effect of reducing the cost of construction due to the reduction of material costs and the construction period due to the shortening of the construction and the road traffic control in the conventional gebion method and the like.

In particular, the ground friction of the earth support member and the ground support ability of the bending deformation preventing member is excellent, there is an effect that can be installed regardless of the slope of the cut soil.

1 is a construction sequence diagram showing a method of reinforcing cut soil according to the present invention.
Figure 2 is a view showing the separation of each structure for the reinforcement of cut soil according to the present invention.
3 is a view showing a state in which the construction of the cut soil slope with the structure and the reinforcement method according to the invention.
4 is an enlarged view illustrating main parts of FIG. 3.
5 is a view showing a cross-sectional state of FIG.

Hereinafter, a preferred embodiment of the cut soil reinforcement method for ensuring stability according to the present invention will be described in more detail on the basis of the accompanying drawings.

Here, in all the drawings below, the components having the same functions are not repeated, using the same reference numerals, and the following terms are defined in consideration of functions in the present invention, which are inherently commonly used. It should be interpreted as meaning.

As shown in FIGS. 1 to 5, the structure employed in the cut soil reinforcement method according to the present invention includes a binding hole 120, a bending deformation preventing member 130, a ground support member 140, and a reinforcing material ( 150).

The fastener 120 is coupled to the reinforcement 150 to stably support the bending deformation preventing member 130 and the like, and is formed of a material capable of exerting a predetermined tensile strength, and the reinforcement 150 Combination hole 121 is formed of a screw thread (not shown) is formed in the center to form a cross shape, such as to be combined with.

In addition, the binder 120 is preferably galvanized to prevent rust or corrosion, but not limited thereto, and may be implemented in various forms as long as it can prevent rust or corrosion.

Then, after the fastener 120 is fastened with the reinforcing material 150, the aluminum or galvanized protective cap 110 for corrosion protection to protect the head of the reinforcing material 150 is the reinforcing material 150 Is formed coupled to the head of the.

The bending deformation preventing member 130 refers to a bending stress (deformation when a bending force is applied to the structure, and a vertical stress occurring at the cross section of the object when the object is bent is called a bending stress, and a portion of the upper portion and a portion of the lower portion that extends downward. A horizontal plane with no stretch between the parts is called a neutral plane, ie when a force is applied to the structure at right angles, this action is called warpage. And a compressive stress in the upper part of the cross section and a tensile stress in the lower part of the cross section). Steel that is made of hot rolled steel sheet or coil with excellent durability and does not bend and has excellent durability. A groove such as a lozenge or a honeycomb are molded to achieve a network structure.

The bending deformation preventing member 130 is formed by forming a cutting mark on a metal plate at regular intervals and pulling the cut marks in a direction perpendicular to the cutting marks to form a net shape, and may be used by forming a thin or thick plate thickness as necessary. have.

The bending deformation preventing member 130 is formed of a high-strength net resistant to bending deformation, the section between the reinforcement 150 and the reinforcement 150 installed on the cut soil surface, as well as the cut soil surface 160 is not installed reinforcement 150 ) The whole body was pressed evenly and firmly without bending deformation to prevent scour caused by sliding of the granules.

In addition, the bending deformation preventing member 130 is pressed by the fastener 120 to the cut soil surface 160 so as to be integrated with the reinforcement member 150, to the cut soil surface 160 of the reinforcement member 150 The bearing force is transmitted to the whole ground to strengthen the binding force and bearing capacity with the ground. Accordingly, it is possible to widen the installation interval of the reinforcement 150 than in the prior art can reduce the cost and construction period by reducing the drilling work and installation of the reinforcement.

In addition, the warpage deformation preventing member 130, so that when the eating habits are filled in the groove, the support member so as to support the eating habits to take root through the stiffener support member 140 for receiving the toasts. do.

The masonry support member 140 is installed on the chopped soil surface 160 arranged evenly and arranged to primarily prevent the erosion of the crushed soil surface 160 to be lost and collapsed, and has good elasticity. The fiber yarn is formed into a mat that forms a tangled and sulky three-dimensional structure so as to form an empty space, which serves to solidify the support of the earthworm and the rooting of eating habits (着 根: roots of plants).

For example, the fiber yarn is a geosynthetic fiber made of polyamide or black carbon material having a strong and elastic three-dimensional structure, and is formed so as to be entangled and lumped as a whole, and firmly accommodates the granules as a space between the tangled and tangled fibers. You can do it.

Accordingly, the space between the fiber yarns entangled and sulky is filled with the granules, the roots are entangled and intertwined between the tangled and sulky fibers when providing the dietary wear to achieve a more firm ground support, At the same time it is accommodated in the empty space and rainwater can be easily discharged to the bottom of the mat.

In addition, the masonry support member 140 is excellent in resistance and durability to all chemicals generally contained in ultraviolet rays, soil and water, and is preferably formed to a thickness of approximately 10 to 50mm, but more if necessary It can also be thick.

The reinforcing material 150 is inserted into the hole 161 formed in the punching work on the cut soil surface 160 evenly chopped to support the bending deformation preventing member 130 and the support member 140 to bind and support. , D22 to D32 (SD 400, 350) is made of one of the standard deformed reinforcing bar and the corresponding steel bar (deformed bar) or the like, or a rock bolt or a steel bolt.

Hereinafter, a method of reinforcing cut soils using the above structure will be described.

First, the sedimentary soil surface 160 is evenly laid down and hardened so that ground subsidence or slipping of the granules does not easily occur, and reinforcement of a release bar such as nails, rock bolts, or steel bolts. Mark 150 at the position to form a hole for inserting, and drill the hole 161 by selecting the drilling equipment suitable for the site conditions on the marking portion. (S1)

At this time, the drilling equipment commonly used is effective to use a crawler drill using compressed air, depending on the length or working conditions of the reinforcement 150, using a hydraulic drill or a small rock drill, and when the ground is severely drilled It is desirable to be careful not to disturb.

In addition, the drilling operation should be in accordance with the position, diameter, length and direction of the hole 161 indicated in the design book, the drilling angle is preferably to prevent the error of more than ± 3 ° in the design angle.

Here, the diameter of the hole 161 for inserting the reinforcing material 150 is preferably formed in the range of 20mm to 105mm depending on the ground conditions.

In addition, the drilling work can be done immediately after the ground excavation, or after the shotcrete work for stabilizing the excavation surface, if the drilling work after the shotcrete work should be drilled to prevent cracking of the shotcrete.

After the drilling operation, check whether there is a foreign matter in the hole 161, and if there is a foreign matter, remove the foreign matter by using hydraulic air or the like. At this time, never use water that might collapse the hollow wall.

Next, the reinforcing member 150 of the release bar, such as a nail, rock bolt or steel bolt, is inserted into the hole 161, and the filler is injected (grouting) to be firmly fixed in order to stabilize the soil. (S2)

The grouting is to fill the gaps by injecting fillers into cracks, cavities in the ground for leak prevention work or soil stability in civil works. Fill the filling with gravity or a pump.

In addition, the bolt (BOLT) of the reinforcing member 150 is good to use a bone as it is without a seam, but when the insertion length is inevitably to be connected, it must be connected using a coupler or the like.

Here, when the coupler is used to connect the lock bolts, the nailing section of the connecting part should not be reduced when manufacturing the processing screw for the coupler connection, and in case of welding, special welding shall be made in which the properties of the steel do not change.

As the filler, generally, poplar cement and crude cement suitable for KSL 5210 are used.

In addition, grouting (substances used for indexing, leak prevention work, or soil stability in civil engineering) should have a strength of 210km / ㎠ or more for 28 days of formulation, and water / cement ratio (W / C) of 45 ~ 55. Frequently, the use of fasteners and inflators in the% range is necessary, and the mixing ratio must be determined by the test mixture.

In addition, when using bentonite in order to stabilize the grouting, it is desirable not to exceed 10-15km / ㎥.

As such, when the reinforcing material 150 is installed in the hole 161 and the grout is filled with a filler such as cement milk into the hole 161, and the casing is installed, when the casing is to be recovered, after the grouting is finished, The casing must be removed and the voids not to collapse before it is completely hardened.

In addition, grouting should be made to completely fill the inside of the hole 161 with a filler and should be performed several times in accordance with the tendency for the filler to penetrate the surrounding ground.

At this time, the dry soil ground is enough to recover the injection, and finally, the inlet of the hole 161 should be injected with a cloth or stopper to prevent the filler from overflowing.

Subsequently, the riparian supporting member 140 cut to fit the length and width of the cut cut surface 160 is laid out from the top of the cut cut surface 140 to be installed so that the connection portions overlap. )

At this time, the masonry support member 140 is formed of a mat forming a three-dimensional structure in which the fiber yarn is tightly entangled and sultry so as to form an empty space for accommodating the masonry is good elasticity and close contact with the cut sand surface 160, It is possible to more easily protect the surface of the cut soil surface 160 by passing the case of water as it is while supporting the granules in the empty space to prevent loss of the granules.

In addition, the connecting portion of the ripja support member 140 is installed to be connected to the hinge line and at the same time to be overlapped.

Next, the bending deformation preventing member 130 extends from the top to the bottom to be connected to the top surface of the masonry support member 140, and is installed to be overlapped. (S4)

In this case, the lap joint for connecting the stiffener support member 140 or the bending deformation preventing member 130 may form a more rigid connection in the range of 10 cm to 30 cm.

In addition, the bending deformation preventing member 130 has a strong strength against bending stress, thereby making the support member 140 more closely adhered to the ground without bending deformation, and at the same time, strengthening the bearing force, thereby being discharged by hydraulic pressure and earth pressure of the ground. There is no fear of swelling and sliding. Therefore, the stability of the cut soil surface 160 can be ensured.

Next, after the installation of the bending deformation preventing member 130 by pressing the bending deformation preventing member 130 by firmly fixed to the ground by coupling the pressure nut (not shown) or the binding hole 120 to the head of each of the reinforcement member 150. Acupressure binding so as to be possible. (S5)

 That is, when the coupling hole 121 is inserted into the head of the reinforcing material 150 to form a fastening hole 121 having a thread (not shown) of the binding hole 120, the binding hole 120 connects the bending deformation preventing member 130. While being pressed, while being integrated with the reinforcement member 150, the pressure is applied to the cut soil surface 160, and the bearing force for the cut soil surface 160 of the reinforcement member 150 is transmitted to the entire ground to be cut in rainwater flowing in rainy weather. The embankment slope 160 to strengthen the restraint with a strong binding force and support force to prevent the sliding of the granules.

The strong binding force and the supporting force can completely prevent the loss of the toggle of the cut soil surface 160 and at the same time widen the installation interval of the reinforcing material (150).

That is, the bending deformation preventing member 130 can strengthen the support force with the cut soil surface 160, can widen the interval between the reinforcing material 150 and the reinforcing material 150, inserting the reinforcing material 150 To reduce the number of perforations and the number of reinforcement 150 to reduce the cost and construction period due to the installation of the reinforcement 150.

As such, the support force of the reinforcement member 150 fixed to the ground of the cut soil surface 160 has a resistance against sliding force of the soil, and the support member 140 and the warpage deformation preventing member 130 in close contact with the slope Since the binding and support to the transfer of the bearing force for the cut soil surface 160 of the reinforcement 150 as a whole to strengthen the binding force and the support force with the ground to ensure the stability of the slope in the long term.

In addition, after acupressure binding of the bending deformation preventing member 130, the protective cap 110 is installed through the head of the reinforcing material (150). Accordingly, corrosion or breakage of the reinforcing material 150 can be prevented.

In addition, since the installation of the structure including the stiffener support member 140 and the bending deformation preventing member 130 is made only on the cut soil surface 160, it is possible to achieve the traffic without cutting the road around the cut soil surface 160. . Accordingly, it is possible to reduce the construction cost and the construction cost of the safety structure for traffic control of the road in operation.

In addition, the present invention may be connected using a pre-installed reinforcement as a reinforcing material, and after fixing a separate steel binding material to the ground, the bending deformation preventing member 130 using the reinforcing material 150 and the fastening type fastener 120 Can bind.

In addition, when fixing the bending deformation preventing member 130 in a portion where the reinforcing material 150 is not installed, using anchor pins (D19, L = 0.5m) (not shown), etc., at this time bending prevention The fixing of the member 130, even if the reinforcing material 150 is not installed, the strength to the bending stress is strong, so that it is firmly acupressure, support the unstable ground, such as the cut soil surface 160.

In addition, after pressing and fixing the warpage deformation preventing member 130 by using the fastener 120 and the protective cap 110 on the head of the reinforcing material 150, the eating habits are bent with equipment such as a feeder (not shown). Filling the grooves, such as rhombus or honeycomb of the deformation preventing member 130 to exhibit a more robust reinforcement support.

Therefore, the present invention primarily prevents the loss of the granules and install the bending deformation preventing member 130 having a strong strength to the bending deformation coupled integrally with the reinforcing material 150 to strengthen the bearing capacity for the ground for a long term slope It is possible to secure the stability of.

That is, by interlocking the reinforcement member 150, the stiffener support member 140 and the warpage deformation preventing member 130 for erosion prevention, the breakdown of the granules in the reinforcement member 150 which is located at any one of the reinforcement member 150 When the forces that can be induced are stressed, the transfer of stress occurs through the bending deformation preventing member 130 having a strong strength against bending deformation, the stress is distributed evenly distributed in all directions to prevent loss or collapse of the pit. .

Therefore, the scrubbing between the reinforcing member 150 and the reinforcing member 150, as well as small scale, by integrating the reinforcing member supporting member 140 and the bending deformation preventing member 130 together with the reinforcing member 150 together to prevent erosion It prevents rockfall and ensures the stability of the slope.

Secondly, as the eating habits are rooted, the soil is more firmly supported to ensure the stability of the slope more reliably.

The present invention is excellent in the adhesion of the ground support member 140 and the ground support ability of the bending deformation preventing member 130 can be installed irrespective of the inclination of the cut soil surface 160.

On the other hand, the present invention is to install the soil support member 140 and the bending deformation preventing member 130 to reinforce the soil loss section between the reinforcing material and the reinforcement is already installed by the vegetation mat method or green earthwork method, and the fastener ( 120) to prevent the outflow of granules on the cut soil, and to ensure stability.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. And will be apparent to those skilled in the art to which the invention pertains.

110: protective cap 120: fastener
121: binding hole 130: bending deformation preventing member
140: support member of the granule 150: reinforcing material
160: cut soil 161: hole

Claims (4)

As the cut soil reinforcement method,
Evenly ground the cut soil, but make sure that the sliding phenomenon of the granules does not occur easily and firmly squeezed, marking at the position to form a hole for inserting the reinforcement, and select the drilling equipment suitable for the site conditions on the marking part Drilling a hole (S1);
Inserting a reinforcing material into the hole, and firmly injecting filler to stabilize soil (S2);
Expanded from the top to the bottom of the soil support member, which forms a three-dimensional structure in which the fiber yarn is tightly entangled and formed so as to form an elastic space that is well-fitted to accommodate the length and width of the cut soil slopes. By connecting the joints, the empty space accommodates the granules to prevent the loss of the granules and prevents the passage of water. The roots are intertwined and intertwined with the intertwined three-dimensional fibrous yarn when providing the dietary meal. Installing to work (S3);
As the upper surface of the stiffener support member, the bending deformation preventing member formed of a high-strength net resistant to bending deformation is unfolded from the top to the bottom, so that the section between the reinforcement and the reinforcement installed on the cut soil and the reinforcement is not installed. Step to install the sieve support member to be in close contact with the ground without bending deformation and at the same time to support the strength is evenly and firmly so as to prevent scour phenomenon (S4);
The support member of the stiffener support member and the bending deformation preventing member and the reinforcement member to be integrated, and at the same time, the support force of the reinforcement member has resistance against the sliding force of the torch, and transfers the support force to the cut soil to the whole to secure the stability of the slope. Combining the binding port with the head of the reinforcing material to bind the acupressure (S5); Cut slope slope reinforcement method for securing stability, characterized in that comprises a. delete delete delete

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