WO2015009124A1

WO2015009124A1 - Strut connection structure for constructing temporary earth retaining structure

Info

Publication number: WO2015009124A1
Application number: PCT/KR2014/006596
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: JP2016528406A; KR20150010419A; CN105431593A

Abstract

The present invention relates to a strut connection structure for constructing a temporary earth retaining structure. The strut connection structure for constructing 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; and prestressed (PS) steel wires for connecting the diagonal beams. According to the present invention as described above, unnecessary horizontal loads can advantageously be prevented from being applied to the wales by tensioning connecting members by means of the PS steel wires for applying loads contrary to the horizontal loads applied to the wales so as to offset the horizontal loads.

Description

Reinforcement structure of earthquake temporary construction

The present invention relates to a bracing connection structure of the earthenware temporary construction, and more particularly, in order to offset the horizontal load applied to the strip, the connecting members are tensioned with a PS steel wire that applies a load opposite to the horizontal load. It relates to a retaining structure of temporary wall construction to prevent unnecessary horizontal loads from being applied to the building.

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: 3007.03.16), two steel pipe braces that 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.

As shown in FIG. 15, the wire-type connection structure of the steel pipe brace according to the related art is characterized in that the load of the double steel pipe brace is distributed to the steel pipe brace, a vertical component applied in the double steel pipe brace. Is a vertical component and horizontal component acting on the weft wedge provided at the site where the steel pipe support and the strip are combined.

Accordingly, as the vertical component, the load applied on the double steel pipe brace, increases, the steel pipe brace is caused to open in the horizontal direction. Therefore, the horizontal load of the steel pipe brace is transmitted to the belt, which is not beneficial to the construction of the temporary soil wall. There was a disadvantage.

The present invention has been made to solve the above problems, an object of the present invention is to tension the connecting members with a PS steel wire to apply a load opposite to the horizontal load to cancel the horizontal load applied to the belt length It is to provide a supporting structure for the temporary wall construction to prevent unnecessary horizontal loads from being applied to the wall.

In addition, eccentric beams are installed between the connecting members to remove the horizontal force applied from the braces by using the tension of the PS steel wire, and press the bands to the inner wall to make the temporary masonry construction more stable. It is to provide a connection structure.

In order to solve the problems described above, the support structure of the earthwork temporary construction according to the present invention is disposed across the walls of the earthquake facing each other, and the support beam connected to the band of the earthen wall, and one side is connected to the band. Is connected, the other side is characterized in that it comprises a sloping beam that is installed to open in both sides at the longitudinal end of the brace, and PS (Prestressed) steel wire connecting the sloping beam.

In addition, the inclined beam, characterized in that it comprises a connecting member is installed on the belt, one side is connected to the connection member and the other side is extended frame connected to the brace.

In addition, the connecting member, the horizontal coupling portion which is installed in the transverse direction in the belt; and the inclined connection to the horizontal coupling portion, extending perpendicular to the extension frame, the outer surface in the longitudinal direction of the extension frame A first support frame supporting one end portion and a second support frame inclinedly connected to the horizontal coupling portion and extending to form a straight line with the extension frame, and supporting a longitudinal inner surface of the first support frame; It is characterized by including.

In addition, the PS steel wire is characterized in that for connecting the inner surface of the first support frame or the outer surface of the second support frame with each other.

In addition, the PS steel wire is connected to both ends of the PS steel wire so as to be connected in parallel to the connecting member, characterized in that it comprises a fixing connection member is installed on both ends of the PS steel wire.

In addition, the fixing connection member is characterized in that it has an inclined surface corresponding to the inclination angle of the first support frame or the second support frame.

In addition, the fixing connection member, the horizontal portion and is formed perpendicular to one end of the horizontal portion, characterized in that it comprises a vertical portion formed with the installation hole is installed the PS steel wire.

The vertical portion may have a width wider than that of the first support frame or the second support frame to prevent the PS steel wire from being interfered by the first support frame or the second support frame.

In addition, the PS steel wire is characterized in that it further comprises an eccentric beam protruding to the band between the connecting members to be applied to the inner wall side.

In addition, the PS steel is characterized in that it is installed through the inner surface and the outer surface of the first support frame.

In addition, the PS steel is characterized in that it is installed through the inner and outer surfaces of the first support frame and the second support frame.

In addition, the PS steel wire is characterized in that each is fixed to the outer end of the horizontal coupling portion via a fixing unit.

In addition, it characterized in that it further comprises a cap covering the outside of the anchorage.

According to the present invention as described above, in order to cancel the horizontal load applied to the band, the PS steel wire is applied with a load opposite to the horizontal load to tension the connecting members to apply unnecessary horizontal load to the band. There is an advantage to prevent losing.

In addition, by installing the eccentric beam between the connecting members by using the tension of the PS steel wire to remove the horizontal component applied from the brace and at the same time has the advantage that can be more stable construction of the temporary earthquake by pressing the strip to the inner wall.

1 is a plan view schematically showing a temporary earthquake construction to which the brace connection structure of the earthwork temporary construction according to the present invention is applied.

2 to 3 is a plan view showing a state in which the PS steel wire is installed in the connecting member according to the present invention.

Figure 4 is a perspective view showing a state of the fixing connection member for installing the PS steel wire in accordance with the present invention the connection member.

5 is a plan view showing an eccentric beam is installed on the band between the connecting members according to the present invention.

6 to 8 are exemplary views showing the appearance of installing the PS steel wire when the eccentric beam is installed in the strip according to the present invention.

9 to 10 is a side view showing the PS steel wire installed through the support frame according to the present invention.

11 is a front view showing a state that the PS steel wire according to the present invention is connected to the support frame via a fixing plate.

12 is a plan view of the wire-shaped connection structure of the steel pipe support according to the prior art.

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.

Reinforcement structure of the earthenware temporary construction according to a preferred embodiment of the present invention, the reinforcement 100, the inclined beam 300, the connecting member 310, PS steel wire 400 is to be described later, the reinforcement 100, Slope beam 300 is made of an H beam (beam).

Figure 1 is a plan view schematically showing the construction of the temporary earthquake is applied to the support structure of the earthquake tent 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 belt 30 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 300 are provided at both ends of the brace 100 in the longitudinal direction to support the belt 30 and the connection structure in an inclined state at both sides so as to have a substantially triangular shape.

The strip 30 may use a single strip or double strip according to the size of the excavated rotor, the strip 30 may be installed with the IPS member and PS steel wire to correspond to the moment of earth pressure.

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.

As shown in Figures 2 to 3, the buttress beam 100 and the slope beam 300 is connected via a separate connection block 10, the connection block 10 has a substantially isosceles triangle.

In more detail, two surfaces having the same slope in different directions among the three surfaces of the connection block 10 are connected to the other end of the inclined beam 300, and the other one surface is the buttress beam 100. Is connected to.

Accordingly, the inclined beam 300 is opened with the same inclination in different directions with respect to the brace 100.

Here, the inclined beam 300 is composed of a connecting member 310 installed in the belt 30, and an extension frame 320 connected to the connecting member 310, as shown in Figure 2 to FIG. do.

On the other hand, as described above, one side end of the inclined beam 300 that is open to both sides is connected to the band through the connection member 310, respectively, such a connection member 310, PS steel wire 400 is installed to connect the connection member 310 Forces to pull between each other, that is, tension is generated.

The tension generated between the connecting members 310 by the PS steel wire 400 serves to cancel the horizontal component acting on both sides in accordance with the load applied to the inner wall in the brace 100. As shown in FIGS. 2 to 3, the load applied from both ends of the brace 100 to the connecting member 310 is a vertical component acting on the inner wall side and a horizontal component acting on the outside of the connecting member 310. exist.

Accordingly, since the horizontal component acting on the connecting member 310 is canceled by the PS steel wire 400, only the vertical component acts on the inner wall side of the connecting member 310.

The reason why the vertical component and the horizontal component are generated as described above is because the inclined beam 300 is inclined at a predetermined angle to the brace 100.

In addition, the connecting member 310 is a horizontal coupling portion 311 connected to the band 30, and the first support frame 312 and the second inclined in the opposite direction to the horizontal coupling portion 311 and the second The combined shape of the support frame 313 is generally triangular.

The first support frame 312 is formed to extend perpendicular to the extension frame 320 so that the outer surface in the longitudinal direction supports the other end of the extension frame 320, the second support frame 313 is an inclined beam Extended to form a line with the 300 to support the inner surface of the first support frame 312.

As described above, the load applied from the brace 100 by the second support frame 313 forming a straight line with the inclined beam 300 may be applied to the connection member 310.

In addition, the PS steel wire 400 is installed on the inner side of the first support frame 312, as shown in Figure 2, or installed on the outer side of the second support frame 313 as shown in FIG. Can be. When the length of the PS steel wire 400 is the same as being installed on the outer side of the second support frame 313 than the inner side of the first support frame 312 has a greater tension.

On the other hand, in order to effectively cancel the horizontal component acting on the connecting member 310 in the brace 100, the PS steel wire 400 is installed in the first support frame 312 or the second support frame 313 It is preferable to install in a parallel state. Accordingly, it is preferable that separate fixing connection members 500 are provided at both ends of the PS steel wire 400 installed on the inner surface of the first support frame 312 or the outer surface of the second support frame 313. .

Referring to FIG. 4, a perspective view of the fixing connecting member 500 is illustrated. The fixing connecting member 500 has an inner side surface of the first supporting frame 312 or an outer side surface of the second supporting frame 313 tilted. It has an inclined surface 510 corresponding to the angle of inversion.

The inclined surface 510 as described above is installed on the inner surface of the first support frame 312 and the outer surface of the second support frame 313 so that the PS steel wire 400 is installed in parallel with the connection member 310. Allow you to maintain tension.

In addition, the fixing connection member 500 is provided with a horizontal portion 501 and a vertical portion 502 formed perpendicular to one end of the horizontal portion 501. The horizontal portion 501 is formed extending in the same direction as the direction in which the tension force of the PS steel wire 400 acts, the vertical portion 502 is formed with an installation hole 520 in which the PS steel wire 400 is fixed and installed do.

On the other hand, the vertical portion 502 and the horizontal portion (P) so that the PS steel wire 400 installed in the installation hole 520 as described above is prevented from interference by the first support frame 312 or the second support frame 313 The width of 501 may be adjusted. In particular, if the width of the vertical portion 502 is made wider than the first support frame 312 or the second support frame 313 and the position of the installation hole 520 to adjust the PS steel wire 400 and the first support Interference with the frame 312 or the second support frame 313 may be prevented.

FIG. 5 is a plan view showing an eccentric beam 600 installed on the belt 30 between the connection members 310 described above. As shown in FIG. 5, between the connection members 310 is shown. When the eccentric beam 600 is installed in the strip, the tension force of the PS steel wire 400 acts on the inner wall side.

The eccentric beam 600 is installed in the strip 30, protruding toward the brace 100 is formed to press the strip 30 in the same principle as the bow demonstration, the press strip 30 is to pressurize the inner wall to earth pressure Support.

In addition, when the eccentric beam 600 is installed as described above, since the PS steel wire 400 protrudes toward the brace as shown in the bow rather than in a parallel state, both ends of the PS steel wire 400 are anchored connection members shown in FIG. 4. It may be fixed using the (500). However, as shown in FIGS. 6 to 8, the fixing member 700 may be fixed to various places through the connection member 310.

As shown in FIG. 6, both ends of the PS steel wire 400 are fixed to an inner side surface of the first support frame 312, or as shown in FIG. 7, both ends of the PS steel wire 400 are second to each other. It may be fixed to the outer surface of the support frame 313.

As shown in FIGS. 9 to 10 when both end portions of the PS steel wire 400 are fixed to the inner side surface of the first support frame 312 or the outer side surface of the second support frame 313 as described above. The first support frame 312 or the second support frame 313 may be installed through the flange (flange) (F) portion.

In addition to the method of installing the PS steel wire 400 through the first support frame 312 or the second support frame 313 as described above, as shown in Figure 11, the first support frame 312 or the first 2, the PS steel wire 400 is fixed by using a separate fixing plate 710 on the outside of the flange (F) of the support frame (313). In addition, there is a method of forming a groove into which the PS steel wire 400 is inserted into the flange F of the first support frame 312 or the second support frame 313.

In addition, after fixing the bolt to the flange (F) portion of the first support frame 312 or the second support frame 313 made of H beam using the L-shaped steel instead of the fixing plate 710, to the L-shaped steel The PS steel wire 400 may be fixed, or two L-shaped steels may be bolted to each other on a web (W) portion of the first support frame 312 or the second support frame 313.

In addition, as shown in Figure 8, both ends of the PS steel wire 400 may be fixed to the outer end of the horizontal coupling portion 311.

When the end of the PS steel wire 400 is fixed to the outer end of the horizontal coupling portion 311 as described above, it is preferable to penetrate the longitudinal portion of the horizontal coupling portion 311 and the first support frame 312, It may be possible to penetrate only the horizontal coupling portion 311.

In addition, the end of the PS steel wire 400 is provided with a fixing device 700 to play the same role as the above-described fixing connection member 500 is fixed to the outer end of the horizontal coupling portion 311, the fixing device 700 It will be good to cover the cap 701 to the outside of the) to protect the coupling portion.

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

Arranged transversely between the earth wall facing each other, the brace is connected to the strip of the earth wall; And

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

PS (Prestressed) steel wire for connecting the inclined beam; support structure of the earthwork temporary construction.
The method according to claim 1,

The tilt beam,

A connection member installed on the belt;

One side is connected to the connecting member and the other side is an extension frame connected to the brace; prop ties connection structure of the mud temporary construction.
The method according to claim 2,

The connecting member,

Horizontal coupling portion installed in the transverse direction in the belt;

A first support frame which is connected to the horizontal coupling part inclined and extends vertically with respect to the extension frame so that an outer surface in the longitudinal direction supports one end of the extension frame; and

A second support frame which is inclined to the horizontal coupling part and extends to form a straight line with the extension frame, and supports a longitudinal inner side surface of the first support frame; Brace connection structure.
The method according to claim 3,

The PS steel wire is a prop connection structure of the temporary wall construction, characterized in that connecting the inner surface of the first support frame or the outer surface of the second support frame to each other.
The method according to claim 4,

It is connected to both ends of the PS steel wire so that the PS steel wire is connected in parallel to the connecting member, and the fixing support member having an inclined surface corresponding to the inclination angle of the first support frame or the second support frame is included. Reinforced linkage structure of temporary wall temporary construction.
The method according to claim 5,

The fixing connection member,

Horizontal section; and

The vertical portion is formed vertically on one side end of the horizontal portion, the vertical portion is formed with the installation hole through which the PS steel wire;
The method according to claim 6,

And the vertical portion has a wider width than the first support frame or the second support frame to prevent the PS steel wire from being interfered by the first support frame or the second support frame.
The method according to claim 3,

And eccentric beams protruding from the bands between the connection members so that the tension force of the PS steel wire is applied to the inner wall side.
The method according to claim 3,

The PS steel wire is a support structure for the construction of the temporary wall construction, characterized in that is installed through the inner surface and the outer surface of the first support frame.
The method according to claim 3,

The PS steel wire is a prop structure of the temporary wall construction, characterized in that is installed through the inner and outer surfaces of the first support frame and the second support frame.
The method according to claim 3,

The PS steel wire is a prop structure of the construction of the clamboard, characterized in that fixed to the outer end of the horizontal coupling portion via a fixing unit, respectively.
The method according to claim 11,

Cap structure covering the outside of the anchorage; prop structure of the temporary wall construction, characterized in that it further comprises.