WO2015009127A1

WO2015009127A1 - Cap beam structure

Info

Publication number: WO2015009127A1
Application number: PCT/KR2014/006600
Authority: WO
Inventors: 한만엽
Original assignee: ㈜써포텍
Priority date: 2013-07-19
Filing date: 2014-07-21
Publication date: 2015-01-22
Also published as: KR20150010421A

Abstract

The present invention relates to a cap beam structure comprising: cap beams, which are formed on the upper sides of earth retaining walls and connect and bind multiple support columns, the earth retaining walls supporting multiple excavated surfaces of an excavated part of the ground, being inserted upright in the ground, and comprising the multiple support columns; anchorages installed with at least a part thereof inserted in the cap beams; and struts for supporting the earth retaining walls supporting the respective excavated surfaces thereof, the struts being respectively connected to and supported by the anchorages inserted in the cap beams formed on the earth retaining walls supporting the respective excavated surfaces thereof, thereby supporting the earth retaining walls by anchoring the struts to the outer surfaces of the cap beams without installing separate wales, and thus simplifying the construction process, shortening the construction time, and significantly reducing the construction costs.

Description

Kapbeam structure

The present invention relates to a kaepbim structure in more detail, there is provided a fixing device for fixing the bracing beam to the outer surface of the kaepbim to fix the support beam to the kaepbim without using a band, the anchorage is protruded shear key and It relates to a kaepbim structure that improves the coupling force between the kaepbim, and is capable of distributing the load applied to the anchorage by the brace.

The present invention claims the benefit of Korean Patent Application No. 10-2013-0085432 filed on July 19, 2013, the entire contents of which are incorporated herein.

In general, underground construction is used to construct underground structures in civil engineering or building construction, and underground walls are used to excavate the ground to prevent the ground from collapsing due to earth pressure generated during construction. .

The retaining wall is constructed by various methods according to the size of the earth pressure acting on the excavation surface, the site conditions, the type of the structure to be constructed, the construction method, and the like, as the construction method of the retaining wall, the H pile earth wall method, CIP (Cast In Placed) Concrete Pile), underground continuous wall construction, sheet pile construction, etc.

Since the retaining wall is constructed perpendicular to the excavation surface to support the ground, there is a risk of collapse by earth pressure when the excavated depth is greater than or equal to a predetermined depth. Therefore, a temporary structure for temporarily supporting the retaining wall is installed during the construction of the underground structure.

The temporary structure does not need to be installed if the excavation depth is not deep, but in recent years when constructing underground structures, most of the ground is excavated to a depth requiring installation of the temporary structure, and in order to secure the safety of the ground excavation site, It is a situation to install a temporary supporting structure.

The temporary structure is usually composed of a band installed horizontally along the wall surface of the retaining wall constructed to support the excavation surface of the ground, and the brace to support the band.

The belt is mainly used for the H beam member, the brace is installed across the retaining wall is formed so that both ends support the band.

In addition, the retaining wall body is inserted into the ground to form a wall, or includes a plurality of support pillars for supporting the wall, and has a kaepbim to connect and restrain the upper end side of the plurality of support pillars.

Usually, the kaepbim is formed so as to cover the upper end of the plurality of support pillars by placing reinforcement to the upper side of the retaining wall and placing concrete.

The construction of the retaining wall is to strengthen the wall rigidity, construct the kaepbim to stably support the excavation surface, and the construction process is complicated, because the construction process is complicated, because the construction process is complicated There was a problem that the construction cost increases.

An object of the present invention is to provide a kaepbim structure that can be installed without the support strip.

Another object of the present invention is to provide a kaepbim structure that can easily install a steel wire to prestress the kaepbim.

The object of the present invention is to support a plurality of excavation surface in the excavated portion of the ground and the kaepbim formed on the upper side of the retaining wall including a plurality of support pillars inserted and inserted into the ground to connect and restrain the plurality of support pillars ;

A fixing unit in which at least a part of the cap beam is inserted and mounted; And

It includes a brace for supporting the retaining wall for supporting different excavation surface,

The brace is solved by providing a mounted kapbeam structure that is connected and supported, respectively, to the anchorages inserted in the kaepbim formed on the retaining wall supporting different excavation surfaces.

In the present invention, the anchorage is formed so that the shear key is inserted into the kaepbim one side.

In the present invention, the shear key has a square pillar shape.

In the present invention, the shear key has a triangular prism shape.

In the present invention, the shear key is H-shaped steel.

The shear key in the present invention, the first plate is installed perpendicular to any surface of the anchorage; And a second plate perpendicular to one surface of the fixing unit and installed to be orthogonal to the first plate.

In the present invention, the shear key, the surface of the shear key is formed on the opposite side of the direction in which the load is applied to the anchorage by the braces are perpendicular to the direction of the load applied to the anchorage and the surface of the anchorage Have a flat surface.

The kaepbim structure according to the present invention is provided on the support portion disposed so as to be spaced apart from each other between the plurality of anchorages provided in the kaepbim, both ends are respectively fixed to the plurality of anchorages and is supported on the end of the support portion and is installed in the steel wire and the kaepbim It further comprises a fixing part for fixing the support.

In the present invention, the fixing portion, one side is fixed to the outer surface of the kaepbim, the other side is formed with a protrusion portion is fixed to the end side portion of the support portion overlapping.

In the present invention, the protruding portion is provided to protrude on the other side of the fixing portion and includes a separation preventing wall in which the end side of the support portion overlaps.

In the present invention, the protruding portion is formed as a frame portion protruding from the other side of the fixing portion and having a space portion into which an end portion of the supporting portion is inserted.

In the present invention, the protrusions are formed on one side and the other side of the fixing part, respectively.

In the present invention, one side of the fixing part protrudes a fixing protrusion inserted into and fixed into the kap beam.

In the present invention, the fixing protrusion includes a fixing pin inserted through the fixing part into the kaepbim.

The present invention has the effect of simplifying the construction process by shortening the construction process by supporting the retaining wall by fixing the braces on the outer surface of the kaepbim without installing a separate belt length, greatly reducing the construction cost.

The present invention has the effect of shortening the construction time and further reducing the construction cost by quickly constructing the support portion for supporting the steel wire installed to apply the prestress to the kaepbim by a simple method on the outer surface of the kapbim.

1 is a side view schematically showing a kaepbim structure according to the present invention.

Figure 2 is a plan view schematically showing a kaepbim structure according to the present invention.

3 is a plan view showing a state in which the fixing unit is installed in the kaepbim.

4A to 4C illustrate various embodiments of protrusions formed on the fixing part of the present invention.

5 is a view showing an embodiment of a fixing part of the present invention.

Figure 6 is a plan view showing a fixing device according to the present invention.

7 is a view showing various embodiments of a shear key provided in the anchorage.

8 is a view showing various embodiments of the anchorage according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Here, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the repeated description and the gist of the present invention will be omitted.

And embodiments of the present invention is provided to more completely explain the present invention to those skilled in the art.

Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

1 is a side view schematically showing a kaepbim structure according to the present invention, Figure 2 is a plan view schematically showing a kaepbim structure in accordance with the present invention, Figure 3 is Figure 3 is a fixing device 200 in the kaepbim 100 It is a top view which shows the installed state.

The excavated portion of the ground is formed with a plurality of excavation surface, the excavation surface is constructed with a wall wall. The retaining wall includes a plurality of retaining walls to support the plurality of excavation surfaces.

As an example, the retaining wall 20 has a plurality of concrete pillars 21 installed along a CIP (Cast In Placed Concrete Pile) method installed along an excavation surface of the ground 10.

The retaining wall 20 may be installed along an excavation surface with a plurality of support piles inserted into the ground and inserted into the support panel, and a support panel inserted between the support piles, and inserting a plurality of sheet piles connected to each other to stand on the ground. It can also be installed.

For example, the earth wall is constructed by using an H pile earth wall method, a CIP (Cast In Placed Concrete Pile) method, an underground continuous wall method, a sheet pile method, and the like, and sees anything supporting the excavated surface of the excavated ground. It is found to be included in the invention.

In the present invention, the support pillar may include the concrete pillar or the support pile, and it is to be understood that the pillar includes any type of pillar installed to support the excavation surface by being inserted into the ground.

The kaepbim structure according to the present invention, the kaepbim 100 is formed on the upper side in the retaining wall to connect and restrain the plurality of the support pillars, at least a portion of the fixing fixture 200 is inserted into the kaepbim 100 and mounted; It includes a brace 300, both ends are respectively connected to the retaining wall to support the different excavation surface in the retaining wall (20).

The kaepbim 100 is formed on the upper side of the plurality of retaining wall to support the different excavation surface, respectively, and the fixing device 200 is inserted into each kaepbim 100 is inserted.

The brace 300 is connected to the fixing unit 200 mounted on each kaepbim 100 is mounted. The brace 300 is connected to each of the anchorages inserted into the kaepbim 100 formed on the retaining wall 20 to support the different excavation surface to support the retaining wall (20).

The kaepbim 100 is formed by reinforcing the reinforcement from the top of the retaining wall 20 and pouring concrete.

The kaepbim 100 is to close the upper portion of the earth wall 20 is constructed on the excavation surface of the ground (10).

Since the kaepbim 100 is formed on the top of the retaining wall 20 to support a plurality of excavation surface, it has a plurality of inner surface corresponding to the plurality of excavation surface.

The inner surface of the kaepbim 100 refers to the opposite surface of the kaepbim 100 contacted with the excavation surface of the ground 10, the surface facing the excavated portion, the direction corresponding to the inner surface of the retaining wall (20) It is the side of.

The excavation portion of the ground is excavated in a rectangular shape, the earth wall 20 is an example that is formed in a rectangular shape to support each excavation surface of the rectangular excavation portion.

The kaepbim 100 is an example that is formed by reinforcing the reinforcement to the upper portion of the plurality of concrete pillars (21) constructed by the CIP (Cast In Placed Concrete Pile) method, the concrete is cast, the anchorage inside Inserted in the state where the concrete is poured and fixed in the kaepbim 100 by curing of concrete.

The anchorage 200 is preferably a front end key 210 is inserted into the kaepbim 100 protruding to any one surface is firmly fixed to the kaepbim 100.

The brace 300 is connected to the anchorage so as to support the retaining wall 20, which supports the excavating surface adjacent to each other at the corner of the retaining wall 20.

That is, the kaepbim 100 is inserted into each of the retaining wall of the retaining wall 20 supporting the excavation surface adjacent to each other, the support beam 300 is formed on the excavating surface adjacent to each other Both ends are respectively connected to the fixing unit mounted in the kaepbim 100 to support the retaining wall 20.

That is, the kaepbim structure according to the present invention is provided with a fixing unit for supporting the retaining wall 20 on a plurality of inner surfaces of the kaepbim 100, and using the fixing unit without installing a separate strip of the earthing wall ( 20 may be installed to support the brace 300.

On the other hand, the kaepbim structure according to the present invention, the support 110 is disposed so as to be spaced apart from each other between the plurality of anchorages 200 provided in the kaepbim 100, both ends are fixed to the plurality of anchorages 200, respectively The steel wire 120 is in contact with the end of the support 110 is tensioned and the fixing portion 130 is installed on the kaepbim 100 to fix the support 110.

The support part 110 is disposed in the center portion and is spaced apart from one side of the first support part 111 and the first support part 111 formed to protrude on the inner surface of the kaepbim 100 and the first support part 111. And a second support part 112 protruding at a lower height than the second support part 112 and a third support part 113 spaced apart from the other side of the first support part 111 and protruding at a lower height than the first support part 111. .

Both ends of the steel wire 120 are fixed to positions spaced apart from one side of the second support 112 and spaced apart from the other side of the third support 113, respectively, in a state where prestress is applied.

The support 110 and the steel wire 120 form a prestress on the retaining wall 200 to improve the pressure resistance of the kaepbim 100 against the earth pressure of the excavation surface.

The fixing part 130 allows to firmly and simply fix the supporting part to which the prestress structure can be applied to the kap beam.

The kaepbim structure according to the present invention can be easily applied to the kaepbim 100 prestressed structure without separately installing a belt length to improve the ease of construction.

4A to 4C are views illustrating various embodiments of protrusions formed on the fixing unit.

The fixing portion 130, one side is fixed to the outer surface of the kaepbim 100, the other side is formed with a protrusion 131 is fixed by overlapping the end side portion of the support 110.

It is preferable that a fixing protrusion 132 is inserted into the kaepbim 100 to be fixed to one side of the fixing portion 130, the fixing protrusion 132 penetrates through the fixing portion 130 It may be a fixing pin inserted into the kaepbim 100, it may be to be firmly bound in the concrete of the kaepbim 100 with a reinforcing bar formed in the annular convex portion on the outer surface.

In addition, the fixing protrusion 132 may use a fixing bolt and a nut.

The fixing protrusion 132 is inserted into the kaepbim 100 to be fixed so that the fixing portion 130 is firmly mounted to the kapbim 100.

More specifically, referring to FIG. 4A, the protrusion 131 is provided to protrude on the other side of the fixing part 130, and includes a separation prevention wall 131 a in which an end side of the support part 110 partially overlaps. . At least one separation preventing wall 131a is provided on the other side of the fixing part 130, and an end side of the supporting part 110 is inserted and overlapped with a plurality of spaced apart mounting parts. To support the support 110 more firmly.

That is, the end side of the support portion 110 is installed so as to overlap the separation preventing wall (131a), and to adjust the tension of the steel wire 120 to fix the support portion 110 and at the same time the steel wire 120 Prestress can be delivered.

The release preventing wall 131a fixes one side of the L-shaped angle to the other side of the fixing part 130 by using an 'L' shape angle, and thus the other side is fixed to the fixing part 130. Protruding perpendicular to the other side of the) may be formed.

One side of the 'L' shape is in close contact with the other side of the fixing part 130 is coupled using a fastener, such as bolts and nuts, the other side is perpendicular to the other side of the fixing part 130 Protruding so that the end portion of the support 110 is partially overlapped.

4B and 4C, the protruding portion 131 protrudes from the other side of the fixing portion 130 such that the frame portion 131c is formed with a space portion s into which the end of the supporting portion 110 is inserted. It can be formed into).

That is, the protruding portion 131 is formed of a frame portion 131c having a space in which an end portion portion of the support portion 110 can be inserted, and has a form surrounding the end portion portion of the support portion 110. Space portion (s) is formed on the inside, the end of the brace 300 is inserted into the space (s) is fixed.

On the other hand, the protrusion 131 may be formed on one side and the other side of the fixing portion 130, respectively.

Accordingly, the protrusion 131 formed on one side of the fixing part 130 is fixed in a state buried in the concrete during curing of the kaepbim 100, so that the fixing part 130 to the kaepbim 100 Make it more secure.

Referring to FIG. 5, the fixing part 130 is fixed to the inner surface of the kaepbim 100 is inserted into the kaepbim 100, the fixing projection 132 formed on one side, the support 110 A portion of the end portion is overlapped to the protrusion 131 of the fixing part 130, and the tension of the steel wire 120 is adjusted so that the pre-stress is transmitted by the steel wire 120.

FIG. 6 is a plan view illustrating the fixing unit 200 according to the present invention, and FIGS. 7A to 7D illustrate various embodiments of the shear key 210 provided in the fixing unit 200.

In the present invention, the shear key 210 is provided to protrude on one side of the anchorage 200, the anchorage 200 is inserted into the kaepbim 100 to fix the reinforcement 300 to the kaepbim 100 While being firmly installed, it plays a role of distributing the load P applied to the anchorage 200 in the brace 300.

To this end, the shear key 210 is formed to protrude on the surface in contact with the kaepbim 100 in the anchorage 200, may be formed of H-shaped steel with reference to Figure 7a, referring to Figure 7c It may be formed in a shape, referring to Figure 7d may be formed in a triangular prism shape.

In particular, as shown in FIG. 7B, the shear key 210 is perpendicular to any one surface of the first plate 211 and the anchorage 200 which are installed perpendicular to any surface of the anchorage 200. And it is preferable to improve the load resistance with respect to the load (P) by the brace 300, including the second plate 212 installed to be orthogonal to the first plate 211.

The first plate 211 is installed perpendicular to one surface of the anchorage 200 and intersects the load direction P1 applied to the anchorage 200 by the support 300 to the anchorage 200. The resistance force is maximized with respect to the applied load, and the second plate 212 is installed to be perpendicular to the first plate 211 generating resistance in the kaepbim 100 with respect to the load applied to the anchorage 200. It is fixed and serves to reinforce the rigidity of the first plate 211. The first plate 211 is erected perpendicularly to the load direction P1 applied to the anchorage 200 in the kaepbim 100 to maximize the resistance to the load applied to the anchorage 200 to withstand load In addition, the second plate 212 supports the first plate 211 to prevent the first plate 211 from being deformed or broken due to the load applied to the anchorage 200.

The first plate 211 is to maximize the area in which the shear key 210 is contacted in the kaepbim 100 in the direction (P) to which the load by the brace 300 is applied to improve the load resistance. .

More specifically, in FIG. 7A, when the shear key 210 is formed of H steel, the flange of H steel becomes the first plate 211, and the web of H steel becomes the second plate 212. . In addition, in FIG. 7C, when the shear key 210 is formed as a square pillar, a surface perpendicular to the load direction P1 applied to the anchorage 200 becomes the first plate 211, and is fixed to be perpendicular to the first plate 211. An example of the second plate 212 is a surface that is erect.

That is, in FIG. 6, when a load P is applied to the anchorage 200 by the support 300, the load acts on the anchorage 200 installed in the kaepbim 100 in the P1 direction. And the plurality of shear keys 210 provided in the anchorage 200 is installed to be embedded in the kaepbim 100 is to distribute (P2) each of the load (P) of the brace 300 to support.

An example of a plane perpendicular to the direction of the load applied to the fixing unit 200 and the plane of the fixing unit 200 is the first plate 211 illustrated in FIG. 7B.

In addition, the shear key 210 is not only the load resistance for the brace 300, but also when the concrete of the kaepbim 100 when the shear key 210 is cured in the inserted state in the concrete before curing the Fixture 200 is to be firmly fixed to the kaepbim 100.

8A to 8C are views illustrating various embodiments of the anchorage 200 according to the present invention, and FIG. 8A is an example in which the shear key 210 is formed of a square pillar or an H-shaped steel, and FIG. 8B is a square pillar or H. A shear key 210 having various shapes, including a shear key 210 formed of a shape steel, a shear key 210 formed of a triangular prism, or a shear key 210 including the first plate 211 and the second plate 212. An example of one fixing unit 200 is shown.

In addition, FIG. 8C is a view illustrating an example in which a plurality of shear keys 210 having a wedge shape are spaced apart from each other by including the first plate 211 and the second plate 212 in the anchorage 200. .

Thus, by using the kaepbim structure according to the present invention has the effect that can be fixed to the brace 300 by installing the anchorage 200 is formed with a shear key 210 in the kaepbim 100 without installing a separate strip length have.

And when installing the steel wire 120 to apply prestress to the earth wall (131c) and the kaepbim 100, by installing the fixing portion 130 is formed with a protrusion 131 on the kaepbim 100 to the steel wire 120 The support 110 for supporting is installed on the kaepbim 100, it can be more firmly constructed using a fixing pin 132, the support 110 by the protrusion 131 formed in the fixing 130 There is an advantage of easy fixing.

While specific embodiments of the present invention have been illustrated and described, the technical spirit of the present invention is not limited to the accompanying drawings and the above description, and various modifications can be made without departing from the spirit of the present invention. It will be apparent to those skilled in the art, and variations of this type will be regarded as belonging to the claims of the present invention without departing from the spirit of the present invention.

Claims

A cap beam supporting a plurality of excavation surfaces in the excavated portion of the ground and formed at an upper side in a retaining wall including a plurality of support pillars inserted and inserted in the ground to connect and restrain the plurality of support pillars;

A fixing unit in which at least a part of the cap beam is inserted and mounted; And

It includes a brace for supporting the retaining wall for supporting different excavation surface,

The support beam is characterized in that the kaepbim structure, characterized in that the support is mounted to each of the anchorage is inserted into the kaepbim formed in the retaining wall supporting different excavation surface.
The method according to claim 1,

The anchoring device is a kaepbim structure, characterized in that the shear key is inserted into the kaepbim projecting on one side.
The method according to claim 2,

The shear key is

Kaepbim structure, characterized in that the rectangular pillar shape.
The method according to claim 2,

The shear key is

Kap beam structure, characterized in that the triangular prism shape.
The method according to claim 2,

The shear key is

Cam beam structure, characterized in that the H-beam.
The method according to claim 2,

The shear key is

A first plate installed perpendicularly to one surface of the fixing unit; And

The kaepbim structure, characterized in that it comprises a second plate perpendicular to one surface of the anchorage and installed to be orthogonal to the first plate.
The method according to claim 2,

The shear key is

Among the surfaces forming the shear key, the surface located opposite to the direction in which the load is applied to the anchorage by the props has a plane perpendicular to the direction of the load applied to the anchorage and the surface of the anchorage. Kapbeam structure.
The method according to claim 1,

A support part disposed to be spaced apart from each other between a plurality of anchorages provided in the kaepbim;

A steel wire having both ends fixed to the plurality of anchorages and being in contact with and supported by the ends of the support part; And

The kaepbim structure characterized in that it further comprises a fixing portion installed on the kaepbim fixing the support.
The method according to claim 8,

The fixing part, one side is fixed to the outer surface of the kaepbim, a kaepbim structure, characterized in that the projection formed on the other side of the end portion of the support portion overlapping and fixed.
The method according to claim 9,

The protruding portion is provided to protrude on the other side of the fixing portion and the cam beam structure, characterized in that it comprises a departure prevention wall overlapping the end side of the support portion.
The method according to claim 9,

The protruding portion is a kaepbim structure, characterized in that formed in the frame portion protruding from the other side of the fixing portion formed with a space portion is inserted into the end of the support portion.
The method according to claim 9,

The protrusion is a kaepbim structure, characterized in that each formed on one side and the other side of the fixing portion.
The method according to claim 8,

The kaepbim structure, characterized in that the fixing projection which is inserted into the kaepbim fixed to one side of the fixing portion protrudes.
The method according to claim 13,

The fixing projection is a kaepbim structure, characterized in that it comprises a fixing pin penetrating the fixing portion is inserted into the kaepbim.