KR102276610B1 - Precast Structure for Straigt Retaining Wall using Temporary Sheating Wall after Constructing Temporary Sheating Wall and Construction Method using Thereof - Google Patents

Abstract

The present invention relates to a composite wall type precast direct wall type structure constructed after installation of a temporary retaining facility, and a method for constructing a temporary retaining facility and a retaining wall by using the same, and more particularly to a composite wall type precast direct wall type structure constructed after installation of a temporary retaining facility capable of securing the quality of concrete, shortening the construction period, and improving workability, and a method of constructing a temporary retaining facility and a retaining wall by using the same. The composite wall type precast direct wall type structure includes a pile member and concrete.

Description

Precast Structure for Straigt Retaining Wall using Temporary Sheating Wall after Constructing Temporary Sheating Wall and Construction Method using Thereof}

The present invention relates to a composite wall type precast direct-wall structure constructed after installation of a temporary retaining facility, and a method for constructing a temporary retaining facility and a retaining wall using the same, and more particularly, by using the precast structure to construct the concrete quality, shortening of construction period, and constructability It relates to a precast direct wall type structure constructed after installation of a temporary retaining facility that can be improved, and a temporary retaining facility and a method of constructing a retaining wall using the same.

In many cases, cutting or filling of the existing terrain is required for the construction of roads or railways, and the creation of large-scale residential, commercial, and industrial complexes. The most commonly applied method is to construct retaining wall structures to minimize topographical damage that occurs during cutting or filling, increase land use, and secure structural stability through minimization of cut and fill slopes.

Retaining wall structures are often constructed using cast-in-place concrete. In order to construct a retaining wall using cast-in-place concrete, excavation (or installation of temporary facilities), reinforcement, formwork, concrete pouring, form dismantling, concrete curing, etc. The work will proceed in the following order.

The construction method using cast-in-place concrete has a complicated construction type, not high on-site constructability, a long period of time, difficulty in quality control, and safety issues for workers. In addition, in order to secure structural stability against earth pressure, the installation of the retaining wall base plate is absolutely necessary, so excavation is required, excessive cutting of the original ground occurs, or intrusion of other people's private land by crossing the land boundary.

In addition, the construction of underground structures such as underground parking lots and underpasses is often done by installing temporary retaining facilities including anchors and using cast-in-place concrete. and dismantling work, civil complaints arise due to an increase in the construction period and traffic blockage period, and the construction method using cast-in-place concrete causes problems such as deterioration of workability, increase in construction period, difficulty in quality control, and reduced safety of workers.

The present invention has been devised to solve the problems of the background art, and the problem to be solved by the present invention is that the installation of the retaining wall base plate or the structure foundation is unnecessary, the excavation of the ground behind the structure and the cutting of the original ground are not required, and the minimum space It is possible to construct a retaining wall on the wall, and by using a precast member, it is possible to secure an appropriate quality, and the construction type is simple, and it is possible to improve the workability and shorten the construction period. And to provide a retaining wall construction method.

The present invention as a means for solving the above problems,

In a precast direct wall type structure constructed after installation of a temporary retaining facility,

A pile member composed of an H-beam or a steel pipe in which a part of the lower end is buried in a perforation hole formed in the ground and the rest is exposed to the ground, and a circular plate of steel is coupled to a long lower end in one direction;

It is coupled to both flanges of the H-beam or the outer diameter of the steel pipe from a point spaced apart by a certain length from the lower end of the pile member to a point spaced a certain distance from the upper end or the upper end, and has a long flat plate shape in one direction and the H-beam that is the pile member a pair of reinforcing plates made of steel having a width smaller than the width of the flange or the outer diameter of the steel pipe;

a coupling member for coupling the pile member and the pair of reinforcing plates;

Shear keys are formed on both sides of the pair of reinforcing plates, and a flat wall member installed in contact with the first plate, which is one of the reinforcing plates, and a floor member vertically coupled to the vertical member at the lower end of the wall member. a precast wall member made of precast reinforced concrete;

an earth plate member which is a plate-shaped earth plate installed in contact with a second plate which is the other reinforcement plate among the pair of reinforcement plates;

Concrete poured/cured in a space formed by the precast wall member and the earth plate except for the pile member, the reinforcing plate and the coupling member;

The floor member is a first floor member protruding over the entire surface along the longitudinal direction of the temporary retaining facility on the opposite side of the pile member, and a constant length and a constant width at a position not interfering with the pile member among the sides of the pile member Consists of including a second floor member protruding into the

A plurality of pile members are installed at regular intervals along the longitudinal direction of the temporary retaining facility, and the precast wall member is coupled with an adjacent wall member and a shear key in the longitudinal direction of the temporary retaining facility. provides a precast direct wall type structure for retaining temporary facilities and retaining walls.

It further comprises a fastening means for fastening the precast wall member and the first plate,

The hardening means,

In the precast wall member, a rigid groove manufactured in a block-out method, a first bolt hole that is a through hole formed in the rigid groove, a second bolt hole that is a through hole formed in the first plate, and the first bolt hole and a second bolt hole It is preferable to include a penetrating bolt, a nut fastened to the bolt, and a mortar filled in the rigid groove after the bolt penetrates the first bolt hole and the second bolt hole and is fastened with the nut.

The pile member is an H-beam combined with a disk at the lower end,

It may further include a steel pipe coupled to the lower portion of the disk and a reinforcing plate coupled to the steel pipe and the H-beam,

The pile member is a steel pipe,

It may further include a reinforcing plate coupled to the lower end of the steel pipe.

The precast wall member is manufactured to be segmented at least two in the vertical direction, and may further include a shear key for coupling in the vertical direction.

A manufacturing and transporting step of manufacturing and transporting each component of a ply-wall type precast direct wall type structure to be constructed after the installation of the above-described temporary retaining facility;

A pile member installation step of forming drilling holes in the ground at regular intervals, inserting the lower end of the pile member into each of the formed drilling holes, and then pouring concrete into the drilling holes;

A precast wall member installation step of continuously installing the precast wall member along the longitudinal direction of the temporary retaining facility;

earth plate installation step of continuously installing the earth plate member along the longitudinal direction of the temporary retaining facility;

It provides a temporary retaining facility and a retaining wall construction method comprising; a concrete pouring/curing step of pouring/curing concrete in a space formed by the earth plate and the precast wall member.

The precast direct wall type structure constructed after installation of the temporary retaining facility is

In the precast wall member, a rigid groove manufactured in a block-out method, a first bolt hole that is a through hole formed in the rigid groove, a second bolt hole that is a through hole formed in the first plate, and the first bolt hole and a second bolt hole Further comprising a fastening means comprising a penetrating bolt, a nut fastened to the bolt, and a mortar that is filled in the fastening groove after the bolt passes through the first bolt hole and the second bolt hole and is fastened with the nut,

Between the precast wall member installation step and the concrete pouring/curing step

It is preferable to further include a fastening step of fastening the first plate and the precast wall member using the fastening means.

According to the present invention, it is not necessary to install a retaining wall base plate or a structural foundation, no cutting of the original ground is necessary, and it is possible to construct a retaining wall in a minimum space. It is possible to provide a composite wall type precast direct wall type structure constructed after the installation of a temporary retaining facility capable of improving and shortening the period, and a temporary retaining facility and a retaining wall construction method using the same.

1 is a perspective view for explaining a precast direct wall type structure constructed after installation of a temporary retaining facility according to an embodiment of the present invention.
FIG. 2 is a side view of a precast straight wall type structure constructed after installation of the temporary retaining facility shown in FIG. 1. FIG.
3 is a cross-sectional view of a portion indicated by III-III in FIG. 2;
4 is a cross-sectional view of a portion indicated by IV-IV in FIG. 2;
5 is a cross-sectional view of a portion indicated by V-V in FIG. 2 ;
6 is a view for explaining a pile member of a precast straight wall structure * for a temporary installation or a retaining wall according to another embodiment of the present invention.
7 is a view for explaining a precast wall member manufactured in two segments in the vertical direction.

Hereinafter, specific contents for carrying out the present invention will be provided by describing preferred embodiments of the present invention with reference to the drawings.

1 is a perspective view for explaining a precast direct wall type structure constructed after installation of a temporary retaining facility according to an embodiment of the present invention, and FIG. 2 is a side wall type precast direct wall constructed after the temporary retaining facility shown in FIG. 1 is installed. A side view of the type structure, FIG. 3 is a cross-sectional view of the portion indicated by III-III in FIG. 2, FIG. 4 is a cross-sectional view of the portion indicated by IV-IV in FIG. 2, FIG. 5 is a cross-sectional view of the portion indicated by V-V in FIG. 6 is a view for explaining a pile member of a junction-wall type precast straight wall structure constructed after installation of a temporary retaining facility according to another embodiment of the present invention, and FIG. 7 is a precast wall made of two segments in the vertical direction. It is a figure for demonstrating a member.

The composite wall type precast straight wall structure constructed after the installation of the temporary retaining facility according to this embodiment is a structure used as a temporary retaining facility and a retaining wall (a structure that serves both as a retaining temporary facility and a retaining wall), a pile member (10), a reinforcing plate (12), It is configured including a coupling member 13 , a precast wall member 20 , an earth plate member 30 , concrete 40 , and stiffening means.

As shown in FIGS. 1 to 4 , the pile member 10 includes an H-beam 11 and a disc 15 coupled to the lower end of the H-beam 11 , and a steel pipe 16 coupled to the lower surface of the disc 15 . ), a reinforcing plate 17 coupled to the lower portion of the H-beam 11 and the steel pipe 16 is included.

A part of the lower end of the pile member 10 is buried in the perforation hole H formed in the ground, and the rest is exposed to the ground.

The reinforcing plate 12 is provided as a pair, and is a steel plate installed from a point spaced a certain length from the lower end of the pile member 10 to a point spaced a certain distance from the upper end or the upper end of the pile member 10. H beam ( 11) to be coupled to both flanges, respectively, the first plate (12a) and the second plate (12b) will be called.

The coupling member 13 is a means for coupling the pile member 10 and the reinforcing plate 12 to the flange of the reinforcing plate 12 and the H-beam 11 as shown in FIGS. 1 and 2 . It is vertically coupled and has the same width as the reinforcing plate 12 .

The reinforcing plate 12 also serves to increase the rigidity of the pile member 10 , and also serves as a space maintaining material between the precast wall member 20 and the earth plate member 30 . On the other hand, the coupling member 13 functions to adjust the distance between the pile member 10 and the reinforcing plate 12, and as a result, the length of the coupling member 13 (between the pile member 10 and the reinforcing plate). distance) determines the spacing between the precast wall member 20 and the earth plate member 30 .

The precast wall member 20 is a plate-shaped structure made of a precast reinforced concrete material manufactured in a factory, and includes a wall member 21 and a floor member 22 .

The wall member 21 has a flat plate shape in contact with the first plate 12a, and shear keys 23a and 23b are formed on both sides thereof. Reference numeral 23a denotes a groove-shaped shear key, and reference numeral 23b denotes a protruding shear key. As shown in the enlarged view of FIG. 3 , the precast wall members 20 are coupled in such a way that the shear key 23b of the protruding shape is inserted into the shear key 23a of the groove shape.

The floor member 22 is configured to be coupled to both surfaces of the lower end of the wall member 21 and includes a first floor member 22a and a second floor member 22b.

The first floor member 22a is configured to protrude from the front surface of the wall member 21 opposite to the pile member 10 along the longitudinal direction of the temporary retaining facility, and the second floor member (22b) is formed to protrude with a constant length and a constant width at a position not interfering with the pile member 10 on the side of the wall member 21 on the side of the pile member 10. In this embodiment, the The length of the second bottom member 22b is sufficient to contact the earth plate member 30 .

The fastening means is a configuration for fastening the precast wall member 20 and the first plate 12a, and includes a fastening groove 24, a first bolt hole 25, a second bolt hole 14, a bolt ( 41), a nut 42, and a mortar 43.

The fastening groove 24 is a block-out type groove in the wall member 21 of the precast wall member 20, and the first bolt hole 25 is a through hole formed in the fastening groove 24. , The second bolt hole 14 is a through hole formed in the first plate (12a). The bolt 41 passes through the first bolt hole 25 and the second bolt hole 14 in sequence and is fastened with the nut 42, and the mortar is formed by the bolt 41 being the first bolt hole 24 and the second bolt hole 24. After the nut 42 is fastened through the 2-bolt hole 24, it is filled in the tightening groove 24.

The earth plate member 30 is an earth plate installed to come into contact with the second plate 12b. Since the earth plate is a configuration commonly used in temporary retaining facilities, a detailed description thereof will be omitted.

The concrete 40 is poured/cured in a space formed by the precast wall member 20 and the earth plate member 30 .

A plurality of the pile members 10 are installed at regular intervals along the longitudinal direction of the temporary retaining facility.

A plurality of the precast wall member 20 and the earth plate member 30 are also installed along the longitudinal direction of the temporary retaining facility, and the precast wall member 20 is an adjacent precast wall member 20 and a shear key 23a, 23b) is installed while joining by

When the pile member 10, the precast wall member 20, and the earth plate member 30 are installed, formwork is installed at both ends in the longitudinal direction, and in the space formed by the precast wall member 20 and the earth plate member 30 Concrete is poured/cured.

In the above, an embodiment in which the pile member 10 is composed of an H-beam 11, a disc 15, a steel pipe 16, and a reinforcing plate 17 has been described. As shown in FIG. 6, the steel pipe 11' , A pile member 11 ′ composed of a reinforcing plate 17 ′ may be used. In this case, the first plate 12a' and the second plate 12b' are coupled to both sides of the outer diameter portion of the steel pipe 11' by coupling members 13', respectively.

When the pile member 10 , the precast wall member 20 , and the earth plate member 30 are installed, concrete is poured/cured in the space formed by the precast wall member 20 and the earth plate member 30 .

On the other hand, in the above-described embodiment, the precast wall member 20 is manufactured in one piece, but when the height in the vertical direction increases, it may be manufactured to be segmented in two or more in the vertical direction for convenience of manufacturing and transport. 7 shows an embodiment in which the wall portion of the precast wall member 20 is made of two segments 21-1 and 21-2. Shear keys 29a and 29b are installed in each of the two segments. Reference numeral 29a denotes a shear key in the form of a groove, and reference numeral 29b denotes a shear key in a protruding shape. If necessary, the segment 21-2 shown in the upper part of the drawing may be added. (FIG. 7 does not show the fastening means, but since FIG. 7 is a view for explaining the vertical segmented precast wall member, it is omitted for convenience of illustration.)

Hereinafter, an embodiment of a method of constructing a temporary retaining facility or a retaining wall using each configuration of the junction-wall type precast direct wall type structure constructed after the above-described temporary retaining facility is installed will be described.

The temporary retaining facility and retaining wall construction method according to this embodiment comprises a manufacturing and transport step, a pile member installation step, a precast wall member installation step, an earth plate installation step, a hardening step, and a concrete pouring/curing step. Like the description in the previous embodiment, this construction method is a construction method of a structure that serves both as a retaining wall and a temporary retaining wall.

The manufacturing and transporting step is a step of manufacturing and transporting the members constituting the ply-wall type precast straight wall type structure to be constructed after the installation of the temporary retaining facility described above in a factory and transporting it to the site. At this time, the pile member 10, the reinforcing plate 12, and the coupling member 13 are integrally manufactured at the factory and transported to the site, and the precast wall member 20 is also manufactured at the factory and transported to the site.

The pile member installation step is a step of forming drilling holes (H) in the ground at regular intervals, inserting the lower end of the pile member (10) into each drilling hole (H), and then pouring concrete into the drilling holes. At this time, the disk 15, the steel pipe 16, and the reinforcing plate 17 formed at the lower end of the pile member 10 are also inserted into the drilling hole and concrete is poured.

The precast wall member installation step is a step of continuously installing the precast wall member 20 along the longitudinal direction of the temporary retaining facility. At this time, the precast wall member 20 is installed so as to be in contact with the first plate 12a as in the description of the above-described temporary retaining facility and precast direct wall structure for retaining walls.

The earth plate member installation step is a step of continuously installing the earth plate member 30 along the longitudinal direction of the temporary retaining facility, and the earth plate member 30 is installed in contact with the second plate 12b.

The fastening step is a step of fastening the first plate 12a and the precast wall member 20 using a fastening means.

First, after inserting the bolt 41 to pass through the first bolt hole 25 and the second bolt hole 14 in sequence, the nut 42 is fastened (of course, the bolt is the second bolt hole 14 and the first bolt hole 14). It may be inserted in the order of the balls 25. In this case, the nut 42 is positioned in the tightening groove 24.) The tightening step is performed in such a way that the insertion groove 24 is filled with the mortar 43.

The hardening step may be performed between the precast wall member installation step and the concrete pouring/curing step. It can be done before or after the earth plate member installation step, or it can be done simultaneously with the earth plate member installation step.

The concrete pouring/curing step is a step of pouring/curing concrete in the space between the precast wall member 20 and the earth plate member 30 .

When the concrete pouring/curing stage is completed, the construction of the temporary retaining facility according to this embodiment is completed.

In the above, detailed content for the implementation of the present invention has been provided by explaining the preferred embodiment of the present invention, but the technical spirit of the present invention is not limited to the described embodiment, and various kinds of contents are provided within the scope that does not deviate from the technical spirit of the present invention. It can be embodied as a composite wall type precast direct wall type structure constructed after installation of a temporary retaining facility in the form of a retaining wall, and a temporary retaining facility and a retaining wall construction method using the same.

10: pile member 12: reinforcement plate
13: coupling member 20: precast wall member
30: earth plate member 40: concrete

Claims (7)

In a precast direct wall type structure constructed after installation of a temporary retaining facility,
A pile member consisting of an H-beam or a steel pipe in which a part of the lower end is buried in a perforation hole formed in the ground and the rest is exposed to the ground and a circular plate of steel is coupled to a long lower end in one direction;
It is coupled to both flanges of the H-beam or the outer diameter of the steel pipe from a point spaced apart by a certain length from the lower end of the pile member to a point spaced a certain distance from the upper end or the upper end, and has a long flat plate shape in one direction and the H-beam as the pile member a pair of reinforcing plates made of steel having a width smaller than the width of the flange or the outer diameter of the steel pipe;
a coupling member for coupling the pile member and the pair of reinforcing plates;
A precast reinforced concrete material comprising a flat wall member having shear keys formed on both sides of the pair of reinforcing plates and installed in contact with the first plate, which is one of the pair of reinforcing plates, and a floor member coupled to the lower end of the wall member of precast wall members;
an earth plate member, which is a plate-shaped earth plate, installed in contact with a second plate, which is another reinforcement plate, among the pair of reinforcement plates;
Concrete poured/cured in a space formed by the precast wall member and the earth plate member;
The floor member is a first floor member protruding over the entire surface along the longitudinal direction of the temporary retaining facility on a surface located on the opposite side of the pile member of the wall member, and the pile on the side of the wall member located on the side of the pile member It is configured to include a second bottom member protruding with a predetermined length and a predetermined width at a position not interfering with the member,
A plurality of pile members are installed at regular intervals along the longitudinal direction of the temporary retaining facility, and the precast wall member is coupled with an adjacent wall member and a shear key in the longitudinal direction of the temporary retaining facility. A precast direct wall type structure that is constructed after the installation of temporary retaining facilities.
According to claim 1,
It further comprises a fastening means for fastening the precast wall member and the first plate,
The hardening means,
In the precast wall member, a rigid groove manufactured in a block-out method, a first bolt hole that is a through hole formed in the rigid groove, a second bolt hole that is a through hole formed in the first plate, and the first bolt hole and a second bolt hole After installation of a temporary retaining facility comprising a penetrating bolt, a nut fastened to the bolt, and a mortar that is filled in the hardening groove after the bolt penetrates the first bolt hole and the second bolt hole and is fastened with the nut A plywood precast direct wall type structure to be constructed.
3. The method of claim 1 or 2,
The pile member is an H-beam combined with a disk at the bottom,
A precast straight wall structure constructed after installation of a temporary retaining facility, characterized in that it further comprises a steel pipe coupled to the lower portion of the original plate and a reinforcing plate coupled to the steel pipe and the H-beam.
3. The method of claim 1 or 2,
The pile member is a steel pipe,
A precast straight wall structure constructed after installation of a temporary retaining facility, characterized in that it further comprises a reinforcing plate coupled to the lower end of the steel pipe.
According to claim 1,
The precast wall member is manufactured to be segmented in two or more directions in the vertical direction, and it is characterized in that it further comprises a shear key for coupling in the vertical direction.
In the construction method of the retaining wall,
A manufacturing and transporting step of manufacturing and transporting each component of a junction-wall type precast straight wall type structure to be constructed after installing the temporary retaining facility according to claim 1 to the site;
A pile member installation step of forming drilling holes in the ground at regular intervals, inserting the lower end of the pile member into each of the formed drilling holes, and then pouring concrete into the drilling holes;
a precast wall member installation step of continuously installing the precast wall member along the longitudinal direction of the retaining wall;
earth plate installation step of continuously installing the earth plate member along the longitudinal direction of the retaining wall;
Retaining wall construction method comprising a; concrete pouring/curing step of pouring/curing concrete in the space formed by the earth plate and the precast wall member.
7. The method of claim 6,
The precast direct wall type structure constructed after installation of the temporary retaining facility is
In the precast wall member, a rigid groove manufactured in a block-out method, a first bolt hole that is a through hole formed in the rigid groove, a second bolt hole that is a through hole formed in the first plate, and the first bolt hole and a second bolt hole Further comprising a fastening means comprising a penetrating bolt, a nut fastened to the bolt, and a mortar that is filled in the fastening groove after the bolt passes through the first bolt hole and the second bolt hole and is fastened with the nut,
Between the precast wall member installation step and the concrete pouring/curing step
Retaining wall construction method, characterized in that it further comprises a hardening step of fastening the first plate and the precast wall member using the fastening means.

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