KR102060743B1 - A support-beam assembly of an earth retaining wall structure - Google Patents

Abstract

The present invention relates to a support beam assembly of a temporary earth retaining structure and, more specifically, to a support beam assembly of a temporary earth retaining structure, capable of minimizing the number of struts by applying pre-stress to an H beam to maximize the stiffness of the H beam, thereby reducing the construction period and construction costs. According to the present invention, the support beam assembly of a temporary earth retaining structure comprises: a support beam; a plurality of fixed ends; a movable end; a driving unit; and a bending member, wherein the support beam is provided as an H beam consisting of a web and a pair of flanges, and the fixed end, the movable end, the driving unit, and the bending member are located between the pair of flanges.

Description

A support-beam assembly of an earth retaining wall structure

The present invention relates to a support beam assembly of the earthquake tent structure, and more specifically, to increase the resistance moment of the support beam against earth pressure to minimize the strut construction by reducing the air shortage and construction cost, the earthquake tent structure to improve the construction conditions To a support beam assembly.

The land use of Korea is mainly concentrated in large cities, and the high and high density of urban areas is accelerating due to the lack of available land.

As the size of underground structures increases due to the use of high-rise and densified land, close construction with neighboring structures is inevitable. Therefore, when the underground structures are excavated, slopes, cracks, and collapses of adjacent buildings frequently occur, including settlement of adjacent roads. Many social problems are caused by the loss of property and the number of civil complaints and civil and criminal disputes.

Therefore, it is very important to construct the temporary wall temporary construction at the time of underground excavation.

Temporary wall temporary facility is a temporary structure that is installed to prevent ground collapse or deformation by installing the structure on the vertical plane or slope that occurs when the ground is excavated to build the building.

Hereinafter, with reference to the accompanying Figures 1 and 2 will be described with respect to the temporary housing.

As shown in Figs. 1 and 2, the retaining tent is coupled between the H beam 10 and the H beam 10, which is called a thumb pile, which is held at regular intervals vertically with respect to the ground. 10) the earth plate 20 to fill the space between the earth and soil collapse, the band 30 for supporting the H beam 10 and the earth plate 20, and the H beam 10 opposite to each other A strut 40 and a strip 30 which are installed to have end portions in contact support or are installed between the strip 30 and the strip 30 to reinforce the supporting rigidity of the H beam 10 and the earth plate 20. And a jack 50 installed between the strut 40 and the like.

As shown in FIG. 2, the earthquake temporary construction method includes excavating the ground 60 to form a drilling hole 61, and injecting the H beam 10 into the drilling hole 61.

Thereafter, the H beam 10 is installed across the belt 30 at a predetermined height, and then the strut 40 is supported between the belt 30 and the belt 30.

The strut 40 is installed between the strip 30 and the strip 30, so that the strut 40 has a strip 30 against the bending moment generated when the earth pressure of the ground 60 is transmitted to the strip 30. And the H pile (10) is not inverted.

Thereafter, the earth plate 20 is sandwiched between the H beams 10 to support the soil surface of the excavated ground, thereby completing the construction of the earthwork.

This earthenware temporary installation has the following problems.

The plurality of struts 40 constructed in the height direction of the H beam 10 has a problem of reducing the work productivity of the construction of the temporary wall construction.

Increased air and construction costs due to the construction of a plurality of struts 40 can lead to economic burden from the perspective of the implementer, it is necessary to minimize the construction of the struts 40 to increase the efficiency of construction.

That is, the strut 40 is constructed in multiple stages in the height direction of the H beam 10. The larger the number of struts 40, the greater the impact on earthwork, strut construction, strut dismantling, interference during construction, etc. Therefore, the number of struts 40 should be minimized in order to increase the efficiency of construction of the facility.

Therefore, it is necessary to improve the structure of the temporary structure to minimize the construction of the strut 40 by increasing the moment of resistance of the temporary facility against earth pressure.

Republic of Korea Registration No. 10-0458821

The present invention has been made to solve the above problems, the object of the present invention is to increase the resistance moment of the support beam to minimize the strut construction during construction of the temporary wall construction, through the shortening of the air according to the minimum construction of the struts and to reduce the construction cost The purpose is to provide a supporting beam assembly for the temporary wall structure to improve the construction conditions.

In order to achieve the above object, the present invention is a plurality of support beams along the area of the ground to be excavated, the support beam formed a space between the excavated region and the earth pressure generating region; A plurality of fixed ends fixed in space in the height direction of the support beam; A movable end positioned between a plurality of fixed ends on the space of the support beam and moved along the space of the support beam; A driving unit installed at the fixed end and generating power for pushing the movable end; A bending member installed in the support beam space between the movable end and the fixed end, the bending member generating a bending moment through the movement of the movable end by the power of the driving unit to provide prestress to the support beam toward a region where earth pressure is generated; The support beam is provided as an H beam composed of a web and a pair of flanges, and the fixed end, the movable end, the driving portion, and the bending member are positioned between the pair of flanges, and the movable end and the fixed end are the H beam. Is formed in a shape corresponding to the space between the flange and the web, the both ends of the bending member is supported at one edge of the movable end and the fixed end, the bending member is bent toward the other side of the movable end and the fixed end of the H beam Momentum is generated in the flange, and a portion of the support beam corresponding to the excavated area is further provided with a reinforcement beam to increase the resistance moment of the support beam against earth pressure, A tension bar is further provided to reinforce the prestress on the support beam while tensioning the strong beam, and the reinforcement beam is provided as an integral H beam installed in the flange of the support beam, the flange in which the momentum of the bending member is generated, and both sides of the reinforcement beam Each of the fixing member is formed with a pair of fixing holes are provided in the guide beam, the guide beam for guiding the tension rods to the fixing hole of the fixing member is installed in the support beam is provided with a guide beam formed in line with the fixing hole, the guide beam, A coupling member spaced apart from one side of the reinforcing beam but coupled to a position away from the bending member corresponding to the reinforcing beam, and installed at the end of the coupling member toward the fixing member of the reinforcing member and having a guide hole formed on the same line as the fixing hole. Soil composed of members, characterized in that the prestress stiffness of the support beam can be applied evenly Provides a support beam assembly of this gasiseol structure.

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The support beam assembly of the earthquake tent structure according to the present invention has the following effects.

Prestress is given to the H beam, which is the frame of the earthenware temporary facility to support the earth pressure, thereby maximizing the rigidity of the H beam, thereby minimizing the number of struts.

Accordingly, it is possible to reduce the air shortening and construction costs, there is an effect that can improve the construction conditions construction.

The pre-stress of the H beam includes a fixed end and a movable end at predetermined intervals in a height direction of the H beam, and a bending member capable of prestressing the H beam while generating a bending moment between the fixed end and the movable end. In addition, the fixed end is provided with a driving unit capable of pushing the movable end to bend the bending member so that the movable end provides the bending moment of the bending member to the H beam so that the prestress acts on the H beam.

Therefore, since the rigidity can be secured for each section in the height direction of the H beam, the work productivity of the temporary construction can be improved by minimizing the number of struts installed between the opposed H beams to improve the construction construction conditions.

Figure 1 is a perspective view of the main portion showing the earthquake tent structure according to the prior art
Figure 2 is a side view showing the main portion of the retaining structure according to the prior art
Figure 3 is a perspective view showing the main portion of the support beam assembly of the retaining structure according to a preferred embodiment of the present invention
Figure 4 is a side view showing the main portion of the support beam assembly of the retaining structure according to a preferred embodiment of the present invention
Figure 5 is a plan view showing the position of the bending member of the support beam assembly of the earthquake tentacles structure according to a preferred embodiment of the present invention
Figure 6a is a perspective view showing another example of the bending member of the support beam assembly of the retaining structure according to a preferred embodiment of the present invention
Figure 6b is a plan view showing the position of the bending member according to another example of the support beam assembly of the earthquake tentacles structure according to a preferred embodiment of the present invention
7a to 7c is a view showing a comparison of the earth pressure moment according to the presence or absence of the support beam assembly of the earthquake tentacles structure according to a preferred embodiment of the present invention
Figure 8 is a perspective view showing a main portion of the support beam assembly of the earthquake tentacles structure according to another embodiment of the present invention.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. On the basis of this, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Hereinafter, a supporting beam assembly (hereinafter, referred to as a 'support beam assembly') of an earthquake temporary structure according to a preferred embodiment of the present invention will be described with reference to FIGS. 3 to 7C.

As shown in FIG. 3, the support beam assembly includes a support beam 100, a fixed end 200, a movable end 300, a driving unit 400, and a bending member 500.

The support beam 100 serves as the most basic framework of the temporary structure to resist excavation ground pressure, and is joined in plurality along the area of the ground to be excavated.

The support beam 100 is preferably constructed at equal intervals, and the earth plate (not shown) is installed between the plurality of support beams 100 to prevent the soil collapse.

The installation structure between the earth plate and the support beam 100 can be understood through the prior art.

The support beam 100 is provided as an H beam.

The H beam 100 is a steel structure, and is composed of a flange 120 on both sides and a web 120 connecting between the flange 100.

The H beam 100 having such a configuration forms a space 130 between the flanges 110 on both sides.

This space 130 corresponds to the height of the H beam 100.

The space 130 is referred to as a bending space 130 for convenience of description.

Next, the fixed end 200 supports one end of the bending member 500 so that a bending moment of the bending member 500 to be described later is generated, and is fixed on the bending space 130 of the H beam 100.

The fixed end 200 is provided in plural in the height direction of the H beam 100, and is formed to correspond to the cross-sectional shape of the bending space 130.

Although the shape of the fixed end 200 is not limited, the side cross-sectional shape of the fixed end 200 may have a channel shape as shown in FIG. 4.

The fixed end 200 is preferably fixed by bolting coupled to the flange 110 on the bending space (130).

Of course, the fixed end 200 may be fixed to the bending space 130 by welding.

Next, the movable end 300 serves to exert a bending moment on the bending member 500 to be described later while moving on the bending space 130 by the power of the driving unit 400 to be described later.

The movable end 300 is positioned between the fixed ends 200 in the height direction of the bending space 130 and supports the other end of the bending member 500 to be described later, but moves in the height direction of the bending space 130.

The movable end 300 is formed to correspond to the cross-sectional shape of the bending space 130.

The movable end 300 is also not limited in shape, but the side cross-sectional shape of the movable end 300 may have a channel shape as shown in FIG. 4.

Next, the driving unit 400 generates a tensile force on the movable end 300, is installed in the fixed end 200.

That is, the driving unit 400 is bent in the bending member 500 interposed between the movable end 300 and the lower fixed end 200 by pushing the movable end 300 in the state installed in the fixed end 200. It provides the power to generate the moment.

The drive unit 400 is preferably a hydraulic jack, but is not limited to the hydraulic jack.

The driving unit 400 having such a configuration acts as a force for pushing the movable end 400 while generating power downward in the drawing.

Next, the bending member 500 acts as a bending moment by the movement of the movable end 300 by the power of the driving unit 400 to give a prestress to the H beam 100.

The bending member 500 is bent toward a direction in which the earth pressure of the ground acts, and the bending moment according to the bending acts on the flange 110 of the H beam 100 so that the resistance of the H beam 100 resists the earth pressure. The moment can be further maximized.

One end (lower end in the drawing) of the bending member 500 is supported by the fixed end 200, and the other end (upper end in the drawing) of the bending member 500 is supported by the movable end 300.

By such a configuration, when the driving unit 400 acts, the movable end 300 presses the bending member 500 while moving downward of the H beam 100 to generate a bending moment.

The bending member 500 is preferably provided as a steel bar.

The steel bar is provided as a bar having a rigid material.

As shown in FIG. 5, the bending member 500 of the steel bar is preferably such that the positions of both ends thereof do not coincide with each other when viewed in a plan view.

In addition, both sides of the fixed end 200 and the movable end 300, which is supported at both ends of the steel bar may be formed so that both sides are closed so that the bending member 500 is not separated.

On the other hand, the bending member 500 may be provided in the form of a leaf spring 510 as shown in Figure 6a.

As the bending member is provided to the leaf spring 510, the width of the bending member 510 corresponds to the width of the movable end 300 and the fixed end 200, so that the bending member 510 is shown in FIG. 6B. As described above, it may be more stably disposed between the fixed end 200 and the movable end 300.

In addition, even when both sides of the fixed end 200 and the movable end 300 are open, the bending member 510 of the leaf spring is not separated.

Hereinafter, the coupling and the operation of the support beam assembly of the earthenware temporary structure having the above configuration will be described.

The fixed end 200 and the movable end 300 are alternately fixed in the height direction of the H beam 100.

At this time, the bending member 500 is interposed between the fixed end 200 and the movable end 300.

Next, the prestress is applied to the H beam 100 in consideration of the geological environment and the like.

To this end, the driving unit 400 is moved to move the movable stage 300.

At this time, the movable end 300 generates the bending moment while pushing the bending member 500, the bending moment acts on the flange 110 of the H beam 100, the prestress is applied to the H beam 100.

Next, the ground is excavated and drilled, and the H beam 100 is mounted in the drilled portion.

In this case, since the resistance moment of the H beam 100 against earth pressure is maximized, the number of struts 40 constructed between the H beams 100 may be minimized.

As shown in FIG. 7A, the earth pressure moment acts on the H beam 10 in comparison with the resistance moment of the H beam 10 so that the struts 40 are relatively small in the height direction of the H beam 10. Is installed.

Accordingly, the number of struts 40 to be constructed can be increased.

As shown in FIG. 7B, the support beam assembly according to the preferred embodiment of the present invention can be seen that the resistance moment toward the ground is increased by the bending member 500 compared with the related art.

Accordingly, it can be seen that the earth pressure moment is significantly attenuated as shown in FIG. 7C.

As the resistance moment of the H beam 100 is maximized as described above, even if the number of struts 40 is minimized, the resistance moment of the temporary facility against earth pressure does not decrease.

Accordingly, it is possible to shorten the construction cost and the air according to the minimum number of struts 40, it is possible to improve the construction construction conditions from the perspective of the implementer.

On the other hand, it is possible to further maximize the resistance moment of the support beam assembly of the clogging structure according to the above-described preferred embodiment.

This is presented as another embodiment of the present invention, and will be described with reference to the accompanying FIG. 8.

Prior to the description, the same components as in the preferred embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In order to increase the resistance moment of the H beam 100, a reinforcing beam 600, a guide beam 700, and a tension bar 800 are provided.

The reinforcement beam 600 is coupled to one side of the H beam 100, and serves to maximize the prestress stiffness of the H beam 100.
In this case, one side of the H beam 100 refers to the flange 110 in which the momentum of the bending member 500 is generated as shown in FIG. 8.

The reinforcement beam 600 is preferably provided as an integral H beam, and is preferably fixed at a position corresponding to the portion where the bending member 500 is installed.

The reinforcement beam 600 is preferably bolted to the H beam (100).

In addition, both sides of the reinforcing beam 600, as shown in Figure 8, the upper and lower, respectively, the fixing member 610 for fixing the tension bar 800 is provided.

The fixing member 610 is formed with a fixing hole 611 corresponding to the diameter of the tension bar 800, respectively.

Next, the guide beam 700 serves to guide the tension bar 800 to the fixing hole 611 of the fixing member 610, it is fixed to the H beam (100).

In this case, a guide hole 710 is formed in the guide beam 700, and the guide hole 710 is positioned in line with the fixing hole 611 of the fixing member 610.
As shown in FIG. 8, the guide beam 700 is coupled to the coupling member 700a at a position spaced apart from the reinforcing beam 600 to one side, and the reinforcing beam 600 from the end of the coupling member 700a. It consists of a horizontal member 700b installed horizontally toward the fixing member 610. At this time, the coupling member 700a is coupled to a position away from the bending member 500 corresponding to the reinforcing beam 600. In addition, the guide hole 710 is formed in the horizontal member 700b and is located on the same line as the fixing hole 611.

Next, the tension bar 800 serves to increase the prestress rigidity to the H beam 100 by pulling the reinforcing beam 600.

As shown in FIG. 8, the tension bar 800 has a bar shape and is fixed to the fixing hole 611 through the guide hole 710.

By such a configuration, when the tension bar 800 is pulled, the bending moment acts on the reinforcement beam 600, and the resistance moment of the H beam 100 against earth pressure can be maximized.

Accordingly, as the bending moment of the bending member 500 and the bending moment of the reinforcing beam 600 which are already installed act on the H beam 100, the rigidity of the H beam 100 may be further maximized.

As the rigidity of the H beam 100 is maximized, the H beam 100 may minimize the construction of the strut 40 by maximizing the resistance rigidity against earth pressure.

Accordingly, problems caused by the construction and dismantling of the struts and the interference with the structure can be minimized, thereby improving the construction work conditions.

As described above, in the temporary barrier structure according to the present invention, the bending moment through the bending member and the reinforcing beam acts on the H beam to increase the prestress rigidity of the H beam.

Accordingly, it is possible to minimize the construction of the strut, which is a temporary structure, it is possible to reduce the air shortening and construction costs.

Although the present invention has been described in detail with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and variations are obvious to belong to the appended claims.

100: support beam 110: flange
120: web 130: bending space
200: fixed end 300: movable end
400 driving unit 500 bending member
510: leaf spring (bending member) 600: reinforcement beam
610: fixing member 611: fixing hole
700: guide beam 710: guide ball
800: tension bar

Claims (4)

A plurality of support beams recessed along a region of the ground to be excavated and having a space between the excavated region and a region in which earth pressure is generated;
A plurality of fixed ends fixed in space in the height direction of the support beam;
A movable end positioned between a plurality of fixed ends on the space of the support beam and moved along the space of the support beam;
A driving unit installed at the fixed end and generating power for pushing the movable end;
A bending member installed in the support beam space between the movable end and the fixed end, the bending member generating a bending moment through the movement of the movable end by the power of the driving unit to provide prestress to the support beam toward a region where earth pressure is generated; ,
The support beam is provided as an H beam consisting of a web and a pair of flanges, wherein the fixed end, the movable end, the driving portion, and the bending member are positioned between the pair of flanges,
The movable end and the fixed end,
It is configured in a form corresponding to the space between the flange of the H beam and the web,
Both ends of the bending member are supported at one edge of the movable end and the fixed end, the bending member bends toward the other side of the movable end and the fixed end to generate momentum in the flange of the H beam,
Reinforcement beams are further installed at portions corresponding to the excavated regions of the support beams to increase the resistance moment of the support beams against earth pressure,
The reinforcing beam is further provided with a tension rod for reinforcing the prestress on the support beam while tensioning the reinforcing beam,
The reinforcing beam is provided as an integral H beam installed in the flange of the support beam, the flange in which the momentum of the bending member is generated,
On both sides of the reinforcing beam, a fixing member having a fixing hole is provided in pairs, respectively.
The support beam is provided with a guide beam formed in a straight line with the guide hole for guiding the tension bar to the fixing hole of the fixing member,
The guide beam,
A coupling member spaced apart from one side of the reinforcing beam but coupled to a position away from the bending member corresponding to the reinforcing beam, and installed at the end of the coupling member toward the fixing member of the reinforcing beam and having a guide hole formed on the same line as the fixing hole. A support beam assembly of a temporary block construction structure, comprising a member, which allows the prestress stiffness of the support beam to act evenly.


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