WO2015009126A1

WO2015009126A1 - Anti-bending strut for use in construction of temporary earth retaining structure

Info

Publication number: WO2015009126A1
Application number: PCT/KR2014/006599
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: JP2016528407A; KR20150010422A; CN105431594A

Abstract

The present invention relates to an anti-bending strut for use in the construction of a temporary earth retaining structure. The anti-bending strut for use in the construction of a temporary earth retaining structure according to the present invention comprises: a strut disposed to cross between earth retaining walls, which face each other, and connected to wales of the earth retaining walls; diagonal beams installed such that ends on one side are connected to the wales and ends on the other side spread out to either side of the lengthwise ends of the strut; a tensioning member installed on the outer side of the strut; and a tensioning wire, which is installed in the lengthwise direction of the strut and applies tension to the tensioning member so as to offset the eccentricity of the strut. According to the present invention as described above, the bending of the strut can be prevented by providing tension to a point where the bending of the strut is predicted or occurs, and thus safety in the construction of the temporary earth retaining structure can advantageously be secured.

Description

Bending prevention brace for earthquake temporary construction

The present invention relates to a deflection prevention brace for earthquake temporary construction, and more particularly, it is possible to prevent the phenomena of bending a brace by providing a tension force at a point at which the bending of the brace is predicted or generated. It is related with the warp-proof prop for earthquake temporary construction.

In general, temporary earthquake construction is carried out in the usual way to maintain the safety of the adjacent ground by preventing soil collapse and suppressing displacement of the back of the excavation when drilling the ground for subway construction or construction of structures.

In particular, recent frequent construction of downtown areas has resulted in the demand for settlement of adjacent ground due to ground excavation and the safety of surrounding buildings. Accordingly, the importance of temporary wall construction is increasing.

In general, the construction method in the case of digging in order to make a basement of an existing subway construction or a building, first drills a hole along the planned plane to the design depth, and installs a vertical pile.

After the installation of the vertical pile, the excavation is partially carried out, and the mold beam and the perforated plate are installed. After the installation of the perforated plate, the subsequent construction is carried out by repeating the excavation work and the installation of the brace according to the excavation.

Therefore, in order to design such a temporary facility, it is necessary to repeatedly calculate the pressure applied to the excavation stage and the load applied to the brace, and to install the brace to endure the maximum value. In most cases, it is very tightly arranged within 2-3 meters.

The tightly arranged braces are very important obstacles to the transportation of construction materials, carrying heavy equipment and construction work in the shelter, and when the structure is installed in the future, there is a huge obstacle to form work or reinforcement work. Inevitably, since the formation of a large number of holes in the structure cannot be avoided, serious problems arise in the waterproofing of the finished underground structure.

As a vertical pile, in addition to a temporary facility using steel H pile, there is a method using a concrete pile to fill concrete after hole drilling, and a method using a steel pile and a concrete pile in parallel, or a method using a sheet pile. There is no major difference in the basic principle of drilling a ground and forming a wall with piles to support the ground load.

In addition, there is a method of using a preflax beam as a vertical file, or a method of increasing rigidity by attaching an H file to a sheet file.

On the other hand, there is a method of supporting the steel pile using an earth anchor as a method without the support mentioned above of the temporary construction method for the construction of underground structures.

This method inserts steel wires or rods by drilling inclined holes into the back ground of the pile, and sets the ends of the inserted steel rods by mechanical methods or by chemical methods such as epoxy and cement grouting. To fix the steel file.

The temporary facility constructed in this way is a method that has the advantage of improving the difficulty of the construction by securing sufficient internal space.

However, the biggest drawback of this method is that when this method is applied in a complex city, most of the cases invade adjacent private lands, and there is much room for civil complaints.

Republic of Korea Patent No. 10-0698878 (name of the invention: the wire-type connection structure of the steel pipe brace, registration date: 2007.03.16), two steel pipe braces are installed inclined on both sides of the belt so as to distribute the force applied to the belt And, a double steel pipe brace positioned at a predetermined distance apart from the inside of the two side strips, and the connection body connected between the two steel pipe braces and the double steel pipe braces to be connected to the two steel pipe braces and the double steel pipe braces, and the It is characterized in that it comprises a base plate which is respectively bonded to the two steel pipe braces and double steel pipe braces and is in contact with the connecting body and fastened to the connecting body.

In the wired structure of the steel pipe brace according to the related art as described above, as shown in FIG. 15, the load of the double steel pipe brace can be distributed to each steel pipe brace.

However, in the area where the earth pressure is largely generated, the torsion of the double steel pipe brace to one side is caused by the load applied to the double steel pipe brace, which is not beneficial to the construction of the temporary wall construction.

Accordingly, a method of increasing the rigidity of the double steel pipe brace or connecting the double steel pipe brace in parallel has been sought, but in this case, there is a problem of hitting downward due to the weight of the double steel pipe brace.

The present invention has been made to solve the above-described problems, the object of the present invention is to provide a tension force to the point where the bending of the brace is predicted or generated to prevent the phenomenon of bending the brace can ensure the safety of the construction of the temporary earthquake construction It is to provide a warp-proof support for the construction of temporary blocks.

In order to solve the problems as described above, the earthquake-resistant bracing beam for temporary construction work according to the present invention is disposed across the walls of the earthquake facing each other, and the bracing beam connected to the band of the earth wall, and one side is connected to the band. The other side is a slanted beam which is installed to open in both sides at the longitudinal end of the brace, the tension member is installed on the outside of the brace and the longitudinal direction of the brace is installed, by applying a tension force to the tension member It is characterized in that the tension line is included to offset the eccentricity generated in the brace.

In addition, the tension member is characterized in that it can be installed on one side or one side and the other side of the brace.

In addition, the tension member is characterized in that spaced apart a predetermined distance along the outer peripheral surface of the brace.

In addition, the tension member is characterized in that the height increases from both ends of the brace to the center.

In addition, the brace and the inclined beam is characterized in that coupled via the connecting member.

The connecting member may be an H-beam including two flanges and a web provided between the flanges.

The connecting member may include a horizontal frame installed at an end of the brace and an inclined frame extending at an angle from both ends of the horizontal frame and forming a triangle with the horizontal frame.

In addition, both ends of the tension line is characterized in that it is installed through the adjacent one of the two flanges of the horizontal frame.

In addition, both ends of the tension line is characterized in that it is installed through both flanges of the horizontal frame.

In addition, the horizontal frame and the horizontal portion in contact with the inner flange or the outer flange of the inclined frame, and an L-shaped frame which is formed continuously at the end of the horizontal portion, and includes a vertical portion in contact with the web of the horizontal frame do.

In addition, the horizontal portion is made and exposed longer than the inner flange or the outer flange of the horizontal frame and the inclined frame, the tension line is characterized in that installed in the exposed portion of the horizontal portion.

According to the present invention as described above, it is possible to prevent the phenomenon of bending the support beam by providing a tension force at the point where the bending of the support beam is predicted or generated, there is an advantage that can ensure the safety of the construction of the temporary earthquake construction.

1 is a plan view schematically showing the construction of the temporary earthquake applied to the anti-bending support for the earthquake temporary construction according to a preferred embodiment of the present invention.

Figure 2 is a plan view showing a state in which the tension member is installed on one side outer circumferential surface of the anti-bending brace for the earthenware temporary construction according to a preferred embodiment of the present invention.

Figure 3 is a plan view showing a state in which the tension member is installed on both outer peripheral surface of the anti-bending prop for earthquake tent construction according to a preferred embodiment of the present invention.

Figure 4 is a plan view showing a state in which the tension member is installed along the longitudinal direction on one side outer circumferential surface of the anti-bending prop for earthquake temporary construction according to a preferred embodiment of the present invention.

Figure 5 is a plan view showing a state in which the tension member is installed along the longitudinal direction on both outer circumferential surface of the anti-bending brace for earthquake temporary construction according to a preferred embodiment of the present invention.

6 to 7 is a view showing a state in which the tension line is installed on the horizontal frame or the inclined frame of the anti-bending support for earthenware temporary construction according to a preferred embodiment of the present invention.

8 to 9 are exemplary views showing how the tension line is installed on the horizontal frame or the inclined frame of the anti-bending support for earthenware temporary construction according to a preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described embodiments of the present invention. Like reference numerals in the drawings denote like elements. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

Anti-bending bracing for earthquake temporary construction according to a preferred embodiment of the present invention, a bracing beam 100, a slope beam 200, the tension member 300 and the tension line 400, the bracing beam 100, the slope beam 200 and the connection member 500 to be described later is manufactured as an H-beam (H-beam).

Here, the H-beam will be described briefly. H-beam is a member having an H-shaped cross section and cut to a predetermined length, and having a pair of flanges facing each other in parallel and a web connecting the center of the pair of flanges. It consists of.

Figure 1 is a plan view schematically showing the construction of the temporary earthquake applied to the anti-bracing support for the earthquake temporary construction according to a preferred embodiment of the present invention. The structure is constructed with a wall of mud walls on the inner wall of the excavated site having a rectangular planar structure, the band 10 is installed in the transverse direction inside the wall of mud wall.

In addition, a brace 100 is installed to cross the long sides of the rectangular walls excavated at right angles to support the earth pressure transmitted from the inner wall. A pair of inclined beams 200 are provided at both ends of the brace 100 in the longitudinal direction to support the strip 10 and the connecting structure in an inclined state at both sides so as to have a substantially triangular shape.

The strip 10 may use a single strip or double strip depending on the size of the excavated ground.

In addition, the brace 100 may be provided with a jack (not shown) for applying a load to both ends of the brace 100 in the longitudinal center portion so that the earth pressure transmitted from the inner wall is supported.

Figure 2 is a plan view showing a state in which the tension member is installed on the outer peripheral surface of one side of the anti-bending prop for the construction of the earthenware according to a preferred embodiment of the present invention.

As shown in Figure 2, one side of the brace 100 is provided with a tension member 300, this tension member 300 is installed in the longitudinal center of the brace 100.

In addition, one side of the circumference of the brace 100 is provided with a tension line 400 in the longitudinal direction of the brace 100. The tension line 400 is spaced apart from the brace 100 as if the bow is pulled by the tension member 300, the tension is generated as the tension is tension, the tension is applied in the direction of the brace 100.

For example, when a displacement occurs or is predicted to occur in one side of the brace 100, when the tension member 300 and the tension line 400 is installed at the displacement point, the tension member 300 and the tension line 400 By using the tension force applied to the brace 100, the displacement point can be reinforced.

On the other hand, Figure 3 is a plan view showing a state in which the tension member 300 is installed on both outer circumferential surface of the anti-bending support for the earthenware temporary construction according to a preferred embodiment of the present invention. As shown in FIG. 3, a displacement may be generated on the outer peripheral surfaces of both sides of the brace 100, or a point of occurrence of reinforcement may be reinforced.

As shown in Figure 4 to 5, when the displacement is widely generated or concerned about one side or both sides of the brace 100, a plurality of tension members 300 along the longitudinal direction of the brace 100 Install. Then, by pressing the tension member 300 to the tension line 400 can be uniformly applied to the tension force on one side or both sides of the brace 100.

In addition, as described above, the plurality of tension members 300 installed along the longitudinal direction of the brace 100 may be spaced apart by a predetermined interval. The plurality of tension members 300 have the largest height at the point where the displacement occurs or is predicted in the brace 100, and has a height that gradually decreases toward the point at which the displacement is not generated or predicted.

Accordingly, the present invention can apply a strong tension to the point or the point where the displacement is expected to occur the largest in the brace 100. This tension is characterized by being able to offset the bending caused by the earth pressure transmitted from the belt 10 to the brace 100.

In addition, the deflection may be offset by the weight of the brace 100 in the same manner as described above.

On the other hand, as shown in Figures 2 to 5, the inclined beam 200 is installed at both ends of the brace 100. The brace 100 and the sloping beam 200 is coupled via a connecting member 500, the connecting member 500 is connected to the horizontal frame 510 and the end of the brace 100, and connected to the horizontal frame At the same time it is composed of the inclined frame 520 is connected to the end of the slope beam 200.

Both the support beam 100 and the inclined beam 200 are made of H beams, and both ends of the H beams are cut in a flat cross section so that the prop beams 100 and the ends of the prop beams are separated from both ends of the prop beams 100. It is difficult to directly connect the inclined beam 200 is arranged.

Accordingly, the horizontal frame 510 is vertically connected to the end of the brace 100, and the inclined frame 520 is connected to the end of the tilt beam 200, respectively. The horizontal frame 510 and the inclined frame 520 are made of H beams.

As shown in FIGS. 2 to 5, the inclined frame 520 is formed to be inclined at both ends of the horizontal frame 510, and the horizontal frame 510 and the inclined frame 520 are generally triangular. Precisely is an isosceles triangle.

In addition, an end positioned opposite to an end connected to the inclined frame 520 among both ends of the inclined beam 200, precisely, as shown in FIG. 1, the inclined beam 200 and the strip 10 are connected. It is preferable that another portion of the connection member 500 'having the same role as the connection member 500 is provided at the portion.

6 to 7 is a view showing a state in which the tension line is installed on the horizontal frame or the inclined frame of the anti-bending support for earthenware temporary construction according to a preferred embodiment of the present invention. 6 to 7 illustrate a state in which one end of the tension line 400 is coupled, and the other end of the tension line 400 is the same as the one end.

The tension line 400 as described above is fixed to the horizontal frame 510 or the inclined frame 520 so that the tensioned state by the tension member 300 can be stably maintained. 6 to 7, the tension line 400 may be connected to the horizontal frame 510, and the horizontal frame 510 and the inclined frame 520 are each made of H beams.

6 shows that both ends of the tension line are fixed through the flange adjacent to the brace 100 of the two flanges, and in FIG. 7, both ends of the tension line are fixed to the flange spaced apart through both flanges. The figure is shown. Assuming that the lengths of the tension lines 400 of FIGS. 6 and 7 are the same, as shown in FIG. 7, the tension force of the tension lines 400 provided on the flanges F spaced apart from the tension lines 400 is It is obvious that it will grow bigger.

Meanwhile, FIGS. 8 to 9 illustrate how the tension line 400 is installed on the flange in FIGS. 6 to 7. As shown in FIG. 8, the tension line 400 may pass through the flange F and may be fixed using a separate fixing member 20.

In addition, as shown in FIG. 9, an elliptic frame 700 is provided which abuts one flange F (either an inner flange or an outer flange) and the web W, and the elliptical frame 700 is provided with tension. Line 400 may be fixed, el frame 700 is composed of a horizontal portion 710 and a vertical portion (720).

The horizontal portion 710 is in contact with the flange (F) of the horizontal frame 510 and the inclined frame 520, the vertical portion 720 is in contact with the web (W). The horizontal portion 710 is made longer than the abutting flanges (F).

If the horizontal portion 710 is made longer than the flanges (F) as described above, it is exposed to the outside of the flange (F), the tension line 400 may be installed on the exposed portion. In this case, the tension line 400 does not generate interference with the flange (F) is easy to install the tension line 400. In addition, since the process of forming the perforations on the flange (F) is omitted, the time consumed for installation is significantly reduced.

In addition, reference numeral 30 of FIGS. 1 to 7 denotes a support frame, and the support frame 30 is installed between the brace 100 and the belt 10 and is vertically transmitted from the brace 100 to the belt 10. It supports the load in the direction.

The best embodiments have been disclosed in the drawings and the specification. Herein, specific terms have been used, but they are used only for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims

It is disposed across the walls of the earthquake facing each other, and the brace is connected to the band of the earthwall,

One side is connected to the belt, the other side is inclined beams are installed to be open to both sides at the longitudinal end of the brace,

A tension member installed outside the brace;

It is installed in the longitudinal direction of the brace, the earthquake-resistant brace for earthquake temporary construction, characterized in that it comprises a tension line to apply the tension to the tension member to offset the eccentricity generated in the brace.
The method according to claim 1,

The tension member is bent anti-bracing props for earthquake tent construction, characterized in that it can be installed on one side or one side and the other side of the brace.
The method according to claim 1,

The tension member is a deflection prevention brace for earthquake temporary construction, characterized in that spaced apart a predetermined interval along the outer peripheral surface of the brace.
The method according to claim 3,

The tension member is a deflection prevention brace for earthquake temporary construction, characterized in that the height increases from both ends of the brace to the center.
The method according to claim 1,

Said braces and said ramps are bent preventive brace for earthquake temporary construction, characterized in that coupled via the connecting member.
The method according to claim 5,

The connecting member,

An H-beam comprising two flanges and a web provided between the flanges.
The method according to claim 6,

The connecting member

A horizontal frame installed at an end of the brace;

It extends inclined at both ends of the horizontal frame, the bent anti-bracing props for the construction of the clam, characterized in that it comprises an inclined frame forming a triangle with the horizontal frame.
The method according to claim 6,

Both ends of the tension line is bent anti-bracing props, characterized in that it is installed through the adjacent one of the two flanges of the horizontal frame.
The method according to claim 6,

Both ends of the tension line is a retaining support, characterized in that is installed through both flanges of the horizontal frame.
The method according to claim 6,

And an L-shaped frame including a horizontal part which is in contact with the horizontal frame and the inner flange or the outer flange of the inclined frame, and a vertical part which is continuously formed at an end of the horizontal part, and which is in contact with the web of the horizontal frame. Braces.
The method according to claim 10,

The horizontal portion is made to be exposed longer than the inner flange or the outer flange of the horizontal frame and the inclined frame,

The tension line is bent prevention props for earthquake temporary construction, characterized in that installed on the exposed portion of the horizontal portion.