KR102080221B1 - Retaining structure for civil works and method of constructing it - Google Patents

Abstract

The present invention relates to a retaining structure for civil-engineering works comprising: a retaining wall (10) including bracing struts (11) buried in the ground at set intervals at least on an edge of a retaining area, and one or more cylindrical posts (15) buried in a tightly attached state between the bracing struts (11); retaining wall strip (20) including one or more struts (21) laterally installed in the retaining wall (10) to disperse soil pressure, and brackets (25) installed on the lower ends in the bracing struts (11) to support the struts (21); a retaining anchor (30) including an anchor hole (31) drilled in the bracing struts (11) in a predetermined length to the ground, and an earth anchor (35) integrally cured in the anchor hole (31) to give tension to the struts (21); and one or more retaining fillers (40) interposed in a separation space inevitably created between the retaining wall (10) and the retaining wall strip (20), and expanded by injecting mortar thereinto to be cured while filling the separation space. Therefore, the present invention fills only a main portion for the separation space inevitably created between the retaining wall and the retaining wall strip with mortar to cure the mortar to improve overall constructability and durability.

Description

Retaining structure for civil works and method of constructing it}

The present invention relates to a structure for earthwork construction and a method of constructing the same, and more specifically, by filling only the main part with the mortar for the space space inevitably provided between the wall and the ground strip, with quick and easy construction as a whole. It relates to a civil construction mudstone structure and a method of constructing the same that can prevent buckling and fall with excellent durability.

In general, the excavation work in civil engineering is to embed the earth wall in the excavation surface in order to prevent the collapse of the side wall of the excavation surface, and to construct a structure that can withstand earth pressure surrounding the band installed horizontally inside the wall.

Here, due to the work error and the landfill error, the center cannot be located in a straight line in the direction of progress on the ground due to the working error and the landfill error. As a result, there was a problem that collapse occurs.

Therefore, the Republic of Korea Patent Publication No. 10-1077242 (name of the invention: a method of construction of underground structures using a wall and steel pillars) has been proposed as a way to solve this problem. That is, the filling material of the concrete or metal material is filled with the space generated between the retaining wall and the outer cheolgolbo.

However, there is a problem in that a considerable time, cost and manpower are required in preparing or processing the filling material suitable for all the gaps because the gap between the walls or the strip is not constant.

That is, the Republic of Korea Patent Application Publication No. 10-2010-0013070 (name of the invention: the gap filling hole for the construction of the earth barrier) has been proposed as a way to solve this problem. According to the proposed literature, the gap between the wall and the strip was eliminated through a filling hole made of a fiber bag in which mortar was injected and expanded therein.

Therefore, even if the distance between the wall and the strip is different, it can be applied to all the intervals according to the injection amount of the curing agent is injected to improve the work time and cost required to be reduced.

However, as the bag uses commercially available sack, there is a problem that the mortar is not able to withstand the pressure in the process of injecting the mortar, or the mortar is not injected with sufficient pressure, resulting in collapse due to the biased load action. .

Republic of Korea Patent Publication No. 10-1077242 (Name of the invention: construction method of underground structures using earth walls and steel pillars) Republic of Korea Patent Application Publication No. 10-2010-0013070 (Name of the invention: gap fill hole for the construction of the earthquake)

The present invention has been created in order to more actively solve the above problems, a structure that can significantly improve the durability of the pocket to cure only by filling the main part with the mortar for the space inevitably provided between the earth wall and the belt strip The purpose of the present invention is to provide a civil construction mudstone structure that can prevent buckling and fall with excellent durability and overall construction.

In order to achieve the above-mentioned problems, the construction of the earthwork structure for civil engineering proposed in one aspect of the present invention is as follows.

The earthwork earth structure for the above civil construction is at least at the edge of the earth block area, the earthen wall wall consisting of a support pillar and buried in one or more cylindrical columns in close contact with each other between the upper support pillars set at intervals; One or more horizontally installed on the inner side of the above wall of the earth retaining shovel and dispersing earth pressure, and the earth retaining strip consisting of a bracket installed on the inner bottom of the above support column to support the shoring; A pinhole anchor consisting of an anchor hole perforated to the ground with a predetermined length in the support column, and an earth anchor that is integrally cured in the anchor hole to impart tension to the support block; It is interposed between one or more space spaces inevitably provided between the earth wall and the earth belt, and the earth membrane filling material that is cured by filling the space space by expanding the injection into the mortar; characterized in that it comprises a.

At this time, the top of the earth filling material according to the present invention is connected to the pockets and belts woven integrally so that the curing space of the set volume is provided therein, connected to the earth wall or the band on the top pocket to induce placement in the space, and It is characterized by consisting of a connecting socket to induce the connection with the mortar injection hose on the upper side of the pocket.

In addition, the upper pocket according to the present invention is characterized in that the 300-800 denier polyester yarn is knitted in a double loop by a double laselle warp knitting machine is a knitted surface formed integrally with the surface layer and the connecting layer and the back layer.

In addition, the above connection socket according to the present invention is a connection pipe inserted into the inlet of the pocket communicating with the curing space, the connection cap is fastened to the upper connection pipe to seal the inlet of the pocket, and extends on the top of the upper connection mortar Characterized in that the configuration consists of a connection nipple to induce connection with the injection hose.

In addition, the upper connection pipe according to the present invention is characterized in that the check valve consisting of a spring and the opening and closing rod to prevent the back flow of the mortar injected into the interior.

In addition, the opening and closing rod according to the present invention is interposed with a rubber packing for opening and closing the injection passage on the outer surface, the rubber packing is characterized in that composed of ultra-high molecular polyethylene, silica and carbon fiber.

In addition, the gastric rubber packing according to the present invention is a carbon fiber strand having a diameter of 0.5 to 3.0mm and 1.0 to 5.0% by weight of 10 to 50㎛ spherical silica powder and 90 to 98% by weight of ultra high molecular polyethylene, and 0.5 to 3.0 mm 1.0 to 5.0% of the carbon fiber pieces cut into pieces were mixed, and then ultrasonically applied for 60 to 120 seconds while ethanol was added at a volume ratio of 1: 5 to the total weight% of the mixture, followed by dispersion treatment at 80 to 90 ° C. It is characterized in that the packing material is evaporated ethanol by heating and melted and gelled in the oil heated to 150 ~ 200 ℃ 30 minutes for 30 minutes and then put into a mold and molded at 800 ~ 1200kg / f pressure.

In order to achieve the above-mentioned problems, the construction of the construction method of earthwork structure for civil works proposed in the other aspect of the present invention is as follows.

The construction method of the above-mentioned civil construction mudstone structure comprises: at least at the edges of the mud region buried pillars at predetermined intervals, and wall construction step of embedding the cylindrical pillars in close contact with each other between the pillars; An excavation drilling step of excavating the inner soil of the produced retaining wall to a predetermined depth, and drilling the anchor hole from the inner side of the support column to the ground of the predetermined length; An anchor construction step of inserting the earth anchor in the drilled anchor hole to be exposed to the outside and injecting mortar into the anchor hole to cure the earth anchor integrally with the anchor anchor; Attaching the bracket integrally to the inner lower end of the support column, the belt length building step for installing the support in the transverse direction to distribute the earth pressure on the upper end of the bracket; Inserting the filling material into the space space inevitably provided between the earth wall and the earth wall strip, and filling the space with the mortar to fill the space space to cure the space space filled; characterized in that it comprises a.

According to the present invention having the above-described configuration, the following effects are provided.

First, it is possible to greatly improve the durability performance of the structure by combining the anchor to impart the tension of the wall and the strip with the belt to distribute the earth pressure of the earth wall.

Second, by filling the main part of the separation space inevitably provided between the wall and the girdle with mortar and curing can reduce the labor required for construction.

Third, the filling material is composed of a knitted bag that is woven in a double loop by a double raschel warp knitting machine, it is possible to inject a high pressure mortar can improve the connection fixability of the wall and the strip according to the expansion.

Fourth, it is possible to maximize the convenience and completeness of the construction by constructing a connection socket having a function of blocking the back flow of mortar with quick and easy connection with the mortar injection hose to the filling material.

1 is a cross-sectional view showing the earth retaining structure according to the present invention.
Figure 2 is a plan view showing a clod structure according to the present invention.
3 and 4 is a perspective view showing the earth block structure according to the present invention.
Figure 5 is a perspective view showing the filler of the earth structure according to the invention.
6 is a block diagram showing a bag of the filling material according to FIG.
7 and 8 are configuration diagrams showing the connection socket of the filling material according to FIG.
Figure 9 is a flow chart briefly showing the construction process of the retaining structure according to the invention.

Hereinafter, with reference to the accompanying drawings will be described in a batch about the configuration of the present invention and its effects, effects.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and only the present embodiments may make the disclosure of the present invention complete and common knowledge in the technical field to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, and the invention is defined only by the scope of the claims. And like reference numerals refer to like elements throughout the specification.

The present invention relates to a earthwork structure and construction method for civil engineering, as shown in Figs. 1 and 2 with the main wall and the retaining wall (20) and the retaining band (20) and the retaining anchor (30) and the earth filling material (40) as the main configuration Earthwork structure for civil construction and method of constructing it.

The earthenware structure of the present invention is to improve the overall construction and durability by filling the main part with only mortar for curing the space space inevitably provided between the wall and the strip.

The soil wall 10 is a blocking wall that is driven or grouted on the ground, and includes a support column 11 and a cylinder column 15 as shown in FIGS. 1 to 4. The support column 11 is embedded in the ground at least at the set intervals at the edge of the retaining section, and the cylindrical column 15 is embedded in a plurality in a state of being in close contact with each other between the support columns (11). Here, the support column 11 is integrally cured so that one surface of the H-beam is exposed to the outside. At this time, the retaining wall 10 may be configured as a sheet pile instead of the support column 11 and the cylindrical column (15).

Soil strip 20 is a lobster enclosed in the inner side of the wall 10, as shown in Figs. 1 to 4 made of a crutch 21 and the bracket (25). Shoring 21 is one or more installed in the transverse direction to the inside of the wall 10 serves to distribute the earth pressure, bracket 25 is installed on the inner bottom of the support column 11 to support the support 21 Play a role. Here, the support 21 is disposed in accordance with the angle of the retaining anchor 30 to be described later as H-shaped steel, the bracket 25 is fastened by welding or bolt, respectively, to the H-shaped steel and the support 21 of the support column (11).

Retaining anchor 30 is to strengthen the loose ground together with the wall 10 and the strip 20, as shown in Figure 1 to Figure 4 consists of an anchor hole 31 and the earth anchor (35). The anchor hole 31 is drilled in the support column 11 to the ground by a predetermined length, and the earth anchor 35 is inserted in the anchor hole 31 in the exposed state up to the support neck 21. Mortar is injected into the anchor hole 31 to be cured integrally with the earth anchor 35. Here, the anchor hole 31 is preferably drilled inclined downward 15 to 45 °. And the earth anchor 35 is composed of H-shaped steel or tie rod, welded or fastened to the support 21 to give a tension.

1 is a space filling material 40 is interposed between the wall 10 and the soil strip 20 inevitably provided as shown in Figure 1, at least one intervening, inflated by the injection of mortar into the space filled with the space It is cured.

The filling material 40 is a bag 41 integrally woven so as to provide a curing volume of a set volume therein as shown in FIG. 5, and on the wall 10 or the strip 20 at both ends of the bag 41. It is composed of a connecting string 42 connected to induce the arrangement in the separation space, and a connection socket 45 to induce connection with the mortar injection hose on the upper side of the pocket 41.

That is, the pocket 41 is disposed in a spaced space, and then the connecting strap 42 is knotted and fixed to the wall 10 or the strip 20, and then the injection hose is connected to the connecting socket 45 at a predetermined pressure. Inject mortar. The infusion of mortar causes the bag 41 to expand and cure in a state in which the space is completely filled.

Here, the mortar is preferably composed of any one or a combination of pozzolan cement, portlan cement, blast furnace cement, soil cement. Pozzolan, portlan, blast furnace, and small cement are diatomaceous earth or aluminum fine grains of diatomaceous earth. When water meets, it reacts with calcium hydroxide at room temperature to form a compound to have cement properties.

At this time, the pocket 41 is a 300 ~ 800 denier polyester yarn is woven in a double loop by a double raschel warp knitting machine 1 as shown in Figure 6a, as shown in Figure 6b, the surface layer 41a and the connecting layer 41b and the back layer ( 41c) is preferably composed of a knitted fabric integrally formed. That is, the yarns are looped to each other by the needles 1b connected to the needles 1a swinging left and right and facing each other and alternately operating up and down.

The bag 41 is formed in a double shape in which the surface layer 41a and the back layer 41c are separated, and the connecting layer 41b, which is a curing space into which mortar is injected, is connected to each other by yarns. Is formed. Here, the distance between the needles 1b facing each other becomes the height (volume) of the connection layer 41b.

And the connecting socket 45 is coupled to the connecting pipe 45a of the U-shaped cross-section inserted into the inlet of the bag 41 which is in communication with the curing space as shown in Figure 7, and the connection pipe 45a to seal the inlet of the bag 41 It consists of a cylindrical connecting cap (45b), and a connecting nipple (45c) extending to the upper end of the connecting pipe (45a) to induce connection with the mortar injection hose.

That is, after inserting the connecting pipe (45a) to the inlet of the pocket 41, and then fastening the connecting cap 45b to the connecting pipe (45a) as shown in Figure 8, the inlet of the pocket 41 is assembled in a sealed state . Then, the mortar injection hose is connected to the connecting nipple 45c by one touch, and then injected at a predetermined pressure.

Here, the connection pipe 45a has a check valve 46 composed of a spring S and an opening / closing rod R for preventing the backflow of the mortar injected therein. That is, even after the injection of the mortar is completed, even if the injection hose is disconnected, it is possible to maintain the expanded state of the bag 41.

On the other hand, the opening and closing rod (R) is once interposed a rubber packing (P) for opening and closing the injection passage, the rubber packing (P) is preferably used that is composed of ultra-high molecular polyethylene, silica and carbon fiber.

In other words, the rubber packing (P) is cut from 90 to 98% by weight of ultra-high molecular polyethylene, 1.0 to 5.0% by weight of 10-50 μm spherical silica powder and carbon fiber strands having a diameter of 5 to 10 μm to a length of 0.5 to 3.0 mm. 1.0 to 5.0% of the prepared carbon fiber pieces were mixed, and then ultrasonically applied for 60 to 120 seconds in a state where ethanol was added in a 1: 5 volume ratio to the total weight% of the mixture, and then heated to 80 to 90 ° C. The ethanol evaporated packing material was melted and gelled for 30 to 120 minutes in an oil heated to 150 to 200 ° C., and then put into a mold and molded at 800 to 1200 kg / f pressure.

Hereinafter, referring to FIG. 9, a method of constructing a construction for earthworks according to the present invention is as follows. Since the support column 11, the cylinder column 15, the support neck 21, the bracket 25, the anchor hole 31, the earth anchor 35, and the filling material 40 are the same as described above, the related description will be described. Omit.

First, the support pillars (11) are buried at the set intervals at the edge of the earth block area, and the wall construction step (S10) for embedding the cylindrical columns 15 in close contact with each other between the support pillars (11). Then, the soil inside the soil wall wall 10 is excavated to a predetermined depth, and goes through an excavation drilling step (S20) for drilling the anchor hole 31 from the inner side of the support column 11 to the ground of the predetermined length.

Subsequently, the earth anchor 35 is inserted into the perforated anchor hole 31 to be exposed to the outside, and mortar is injected into the anchor hole 31 to undergo an anchor construction step S30 for curing the earth anchor 35 integrally. . Then, the bracket 25 is integrally attached to the inner lower end of the support column 11, and the support bracket 21 is installed in the transverse direction to install the support bar 21 that distributes earth pressure on the upper end of the bracket 25 (S40).

Finally, the filling material 40 is inserted into the space space inevitably provided between the earth retaining wall 10 and the earth retaining strip 20, and a space filling step of injecting mortar into the filling material 40 to cure the space in the space is filled. Complete the construction of the structure via (S50).

As described above, the present invention can greatly improve the durability of the structure by constructing a combination of anchors for imparting tension between the walls and the strips together with the strips to distribute the earth pressure of the wall. And filling material can be cured only by filling the main part of the separation space inevitably provided between the wall and the band with mortar to reduce the labor required for construction. In addition, since the filling material is composed of a knitted bag that is woven in a double loop by a double raschel warp knitting machine, it is possible to inject high pressure mortar, thereby improving the connection fixability between the wall and the band according to the expansion. In addition, it is possible to maximize the convenience and completeness of the construction by forming a connection socket having a function to block the back flow of the mortar with quick and easy connection with the mortar injection hose to the filling material.

S: spring R: opening and closing rod
P: rubber packing 1: double raschel warp knitting machine
1a: Spit 1b: Needle
10: wall 11: support column
15: cylinder cylinder 20: belt length
21: Shoring 25: Bracket
30: anchor 31: anchor hole
35: earth anchor 40: filler
41: pocket 41a: surface layer
41b: connection layer 41c: back layer
42: connecting string 45: connecting socket
45a: connector 45b: connection cap
45c: connection nipple 46: check valve
S10: Wall construction step
S20: Drilling Drilling Step
S30: anchor construction step
S40: Band Construction Step
S50: Space Fill Step

Claims (3)

In the construction of earth blocks for civil engineering:
A retaining wall (10) comprising at least one support column (11) buried in the ground at predetermined intervals at the edge of the retaining zone and at least one cylindrical column (15) in close contact with each other between the support column (11);
At least one transverse direction is installed on the inner side of the upper wall (10) to dissipate earth pressure (21), and the bracket (25) is installed on the inner lower end of the upper support (11) to support the support (21) A configured earthen belt 20;
A soil anchor consisting of an anchor hole 31 drilled to the ground by a predetermined length in the upper support column 11, and an earth anchor 35 that is integrally cured in the upper anchor hole 31 to impart tension to the support 21. 30;
An earthquake filler 40 which is interposed between the above earthquake wall 10 and the earthquake strip 20 and is inevitably provided with one or more spaces, and is inflated by the injection of mortar into the spaced space to fill the spaced space 40;
Including,
The top wall filling material 40 is connected to the pocket wall (10) or the strip (20) in the space separated from the bag 41 and the woven bag integrally woven so as to provide a curing space of the set volume therein. Consists of a connecting string 42 for inducing arrangement, and a connecting socket 45 for inducing connection with a mortar injection hose on the upper side of the upper pocket 41,
The connecting socket 45 is connected to the inlet of the bag-shaped cross-section inserted into the inlet of the bag 41 communicated with the curing space, and is fastened to the connecting pipe 45a to seal the inlet of the bag 41. It consists of a cylindrical connection cap 45b, and a connection nipple 45c extending to the upper end of the upper connection pipe 45a to induce connection with the mortar injection hose.
The upper connection pipe (45a) earthwork structure for civil engineering, characterized in that the built-in check valve 46 consisting of a spring (S) and opening and closing rod (R) to prevent the back flow of mortar is injected.

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