KR20190051615A - CONNECTOR ASSEMBLY FOR STEEL PIPE STRUT and CONNECTING SYSTEM OF STEEL PIPE STRUT-STRIP FOR UNDERGROUND RETAINING WALL USING the CONNECTOR ASSEMBLY - Google Patents

Abstract

A connecting device, according to the present invention, is a connecting device of a steel pipe strut, for connecting a steel pipe strut used in wale-strut construction to slanting steel members (formed as a steel pipe) symmetrically disposed between the wale and the steel pipe strut on the left and right of the steel pipe strut. The connecting device comprises: a ring type plate formed as an integral member in which two left and right semiannular connection members are connected to extend in the longitudinal direction of the steel pipe strut by a predetermined length to be in close contact with and cover the entirety of the circumference of the steel pipe strut, and opened so only upper portions thereof are separable; and a side connector connected to the circumferential surface of an outer side of each of the two semiannular connection members to directly or indirectly connect each of the slanting steel members. Thus, the cost can be reduced.

Description

TECHNICAL FIELD [0001] The present invention relates to a joining apparatus for a steel pipe bracket for underground earthworks and a wale-steel pipe bracket connecting structure using the same. BACKGROUND ART < RTI ID = 0.0 > [0002] <

The present invention relates to a steel pipe (i.e., a steel pipe strut) used as a strut in a wrist strap-type strut structure used as a visor-like material for supporting a load of a to-wall in an underground earth retaining work, and a steel pipe strut supported at an angle between the steel pipe and the wrist strap (I.e., braid steel pipe) serving as a brace to be used as a brace, and a wale-steel pipe brace connecting structure using the same.

Recently, as the need for expansion of social overhead facilities has increased, underground excavation work has been under way in the city center. The characteristics of underground excavation work are maximum spatial excavation and great excavation excavation to maximize the use of limited space and underground construction where subway, overpass, underground structure, office space and ground structure for residential space are close to each other have.

Especially, underground excavation works for constructing underground structures in large urban areas in a limited space in urban areas should be considered as a top priority for stabilization of surrounding grounds. It is an important part. The retention method can be divided into two methods as a method to utilize the temporary earth retaining structure and a method to construct an underground structure in parallel with the excavation and earthwork as the main structural body acts as an earth retaining wall in response to earth pressure and water pressure. There is a risk of collapse of the retaining structure due to the possibility of civil complication and stability of the surrounding ground. In addition, there are many cases where complaints are generated due to the displacement of surrounding grounds and compensation for construction interruption or civil complaints.

In the present earthwork, the steel culverts are used for the clay, and the cast-in-place wall (CIP) and the soil cement wall (SCW) are used. Earth Anchor, Soil Nailing, Rock Bolt, and top-down construction methods.

In the case of using the hypothetical Strut, there is a high possibility of inducing the change of surrounding ground during the installation and dismantling process of the installation and dismantling. However, compared to the top-down method, It has the advantage of reducing the cross section of the slab and is now widely used.

In the case of using the above-mentioned hypothetical strut, the H-pile piles are vertically installed on the confronting soil walls to support lateral pressure of the soil wall, and then a plurality of longitudinal wales are arranged in a direction orthogonal to the upper H- . Further, a strut brace is provided between the wale band and the wale. As a result, the transverse pressure of the earth wall is transmitted in the order of H-pile pile-> wale-> strut.

On the other hand, the strut between the wale band and the wale band serves as a point of the strand, and as a result, the strand between the strike and the strut has a flexural behavior with respect to a load transmitted from the pile.

However, although the flexural deformation of the member differs depending on the support conditions of the point, the flexural deformation generally increases in proportion to the span of the belt zone. In the case of the simple beam in which the uniformly distributed load is applied, Lt; / RTI > Therefore, it is important to stably support the strut which serves as a point in order to prevent the warp deformation of the belt.

On the other hand, in order to increase the horizontal spacing of the strut that acts as a point with respect to the wrist strap, or to reinforce the strap of the corner straps or the wrist strap, a reinforcement material (bracket) is placed between the wrist strap (horizontal strap) and the strut strap Can be used.

[Figure 1: Construction of conventional bracket]

Generally, if the bending moment of the belt is large or buckling is expected, the brace is installed at the brace installation point to strengthen the wale.

However, as shown in Fig. 1, it is very difficult to combine the curved surface of the steel pipe with the plane of the H-file when using the H-file as a stiffener even if steel pipes are used as the strut. The H-file was installed in place of the steel pipe, and the upper H-file and the steel pipe strand were connected using a separate connecting material as shown in the above figure.

However, the use of different sections of the steel pipe and the H file in accordance with the position of the span, which is a vertical member, is mixed with the span, as the buckling design and the like are complicated due to the difference in rigidity of the two members, And cost increase.

On the other hand, when the four-side reinforcement is installed, the lateral pressure (earth pressure, water pressure, etc.) applied to the wrist is transmitted to the strut through the four-side reinforcement, and the strut is displaced in the longitudinal direction of the strut A problem must be addressed in order to suppress the longitudinal displacement due to the pivoting of the strut when using the bar stiffener which can seriously damage the structural stability (occurrence of buckling due to eccentricity) of the strut which acts as a compression member .

In addition, since the wrist-brace structure itself is a visibility material for underground relocation, it is necessary to have a connection structure of a steel brace-to-bracing reinforcement that minimizes the cross-sectional damage due to repeated installation and disassembly .

10-1308575

Therefore, in the present invention, a method of constructing a steel tube with the same type of steel pipe is proposed to solve the problem of using (mixing) different kinds of members as the strut bracket as shown in FIG. We propose a new connection method between steel pipe strand, reinforcement material, reinforcement material and wale.

In other words, when using a steel pipe as a reinforcement material, it is necessary to connect a steel pipe with a reinforcement material. In case of welding a steel pipe with a reinforcement material, the shape shown in Fig. 2 can be obtained. Welding of the cross section is almost impossible to ensure quality in the field by cutting work for welding, and above all, it is not desirable to increase the recovery rate of members. Therefore, it is an object of the present invention to provide a separate joint device between a steel pipe strut and a stiffener steel pipe (brazed steel pipe).

[Picture 2: Welding of Steel Pipe Straps and Stiffener Steel Pipe]

In the meantime, when the four-piece reinforcement material (bracket) is installed on the steel pipe bracket, the bracket must be symmetrical in the left and right direction so that a bending moment due to eccentric load is not generated on the bracket. So that it can be prevented from being pushed by the horizontal component force transmitted through the four-piece stiffener.

In addition, from the following description, matters obvious to those of ordinary skill in the art can be understood as another object of the present invention.

The joining apparatus according to the present invention is a joining apparatus for joining together a steel pipe strut used for a wrist strap and a strut reinforcement (formed by a steel pipe) disposed between the wrist strap and the steel strut strut symmetrically to the left and right of the steel strut strut A steel pipe strut jointing device comprising an integral member which extends along a longitudinal direction of the steel pipe strut with a predetermined length and is connected to two left and right semicircular joint members so that the whole circumference of the steel strut strut can be closely contacted and covered, And a side connector which is connected to the outer circumferential surface of each of the two semicycle-like connecting members to directly or indirectly connect the four side stiffeners, respectively.

In the jointing device according to the present invention, a bolt connecting part is formed on an upper part of the annular plate which is detachably opened to allow the two semicycle-like connecting members forming the annular plate to be closely contacted to each other, A plurality of ribs protruding upward from the circumferential surface of the semicircular connecting member along the longitudinal direction of the steel pipe strut are formed on the bolt connecting portion, and a plurality of ribs dividing the connecting plate from the connecting plate And the bolt is tightened so that the connecting plate is brought into close contact with the steel pipe strut so that the semicircular connecting member Is firmly fixed to the steel pipe strut .

In the jointing device according to the present invention, the lower part of the annular plate is also formed so as to be releasably opened, and the two semicycle-like connecting members forming the annular plate may be connected to the lower part of the annular plate A bolt connection part may be formed.

In the jointing device according to the present invention, a plurality of fastening holes are formed on the side facing the side reinforcement, and the side fastening holes are formed with a hollow therein so that bolts are fastened to the fastening holes through the hollows. .

The joining apparatus according to the present invention may include a joining portion for connecting the joining portion and the side joining portion.

In the jointing apparatus according to the present invention, the side surface of the side connector is formed with a vertical surface, and the side of the side reinforcement connecting member is in contact with a vertical surface of the side connector, and the side reinforcement is directly or indirectly connected May be formed in a vertical plane and may have a generally trapezoidal cross-sectional shape.

In the jointing apparatus according to the present invention, the reinforcement member may be connected to the tubular connecting member, and a reinforcing member including a cross reinforcing steel member may be connected between the tubular connecting member and the vertical surface of the connecting member.

In the jointing device according to the present invention, a vertical protrusion protruding at a predetermined height in a direction orthogonal to the vertical surface is formed on a vertical surface to which the four-sided stiffener is directly or indirectly connected at the side connector, And the squeeze-preventing jaw is formed so that a lateral pressure transmitted from the wrist strap through the four-side stiffener is greater than a lateral pressure applied to the strand bracket And may be formed at the end edge of the opposite side of the wale at the side connector in order to prevent the occurrence of the jarring.

In the jointing device according to the present invention, the anti-skid jaw may be formed of an iron plate or an " a " -shaped steel or a " -shaped steel " steel which is erected in a direction orthogonal to the vertical surface of the side connector.

In the jointing apparatus according to the present invention, a flange joint is provided between the ends of the four-sided stiffener and the four-sided stiffener, for example, at the ends of the four-sided stiffener and the four-sided stiffener, The bolts can be connected to the above-mentioned stiffener joints through holes.

The present invention relates to a wedge-to-strand strand bracket-to-steel pipe reinforcing material structure for underground clay construction, comprising: a wale band installed horizontally to the left and right of a to-wall surface at a site of a underground sandwich construction; (Formed of a steel pipe) disposed between the wale band and the steel pipe strut symmetrically to the left and right of the steel pipe strut, and the above-described joint device for connecting the steel pipe strut and the four-side stiffener to each other.

In the wale-strand strand-to-steel pipe reinforcing member structure for underground clay construction according to the present invention, a vertical protruding portion protruding at a predetermined height in a direction orthogonal to the vertical plane is formed at a vertical surface to which the four-side stiffener is directly or indirectly connected, Wherein the jam preventing jaw is formed to be capable of functioning as a stopper that sets a limit of the movable jamb to be movable in the longitudinal direction of the steel pipe strut, and the jam- To prevent the lateral pressure transmitted through the side connector from being jammed against the steel pipe strut.

The present invention provides a wale-strand bracelet-steel pipe reinforcing member structure for underground clay construction, wherein the web reinforcement member is pushed against the wale band by a transverse pressure transmitted through the wale- It is possible to provide a wedge preventing jaw to the wale band.

The joint device according to the present invention is a steel pipe strut jointing device for connecting a steel pipe strut and a stiffener (formed of steel pipe) used in a wale-strut construction, the steel pipe strut joint device comprising: A lower semicircular plate formed to correspond to the upper semicircular plate and formed to be in close contact with the other half of the periphery of the steel strut brace, And a side connector connected to the circumferential surface of the lower semicircular plate and directly or indirectly connecting the subsidiary stiffener.

A method of constructing a wristband-steel pipe strut-steel pipe reinforcement material for underground earthwork according to the present invention comprises the steps of installing a steel pipe strut on a wale band, installing a joint device according to the present invention on the steel pipe strut, (Formed of a steel pipe) disposed between the wale band and the steel pipe brace by connecting the joint pipe to the joint device.

According to the present invention, since the connection between the strut and the stiffener (bracket) is simplified, the process can be shortened and the cost can be reduced, and even if the strut and the stiffener are used as steel pipes, There is no need to easily disassemble and recombine, and the recovery rate of the member as a visible material can be increased. That is, the damage to the member surface is minimized.

Particularly, when the jointing device according to the present invention is used, the jointing device itself can be separated from the left or right or up and down, or can be opened from the left or right or up and down. It is also very convenient and can be used not only for the connection between two separate steel strand-strand strands but also for one continuous strand strand without strands. For this reason, it is unnecessary to form the steel pipe strut connection part between the wale band and the stride point as shown in Fig. 1, that is, to separate the steel strut strand into two small spans so as to form the connection part .

Also, since the symmetric cross section of the steel pipe itself is used, the load of the belt is more uniformly transmitted through the left and right side reinforcement members due to the use of the steel pipe, so that the occurrence of bending moment due to eccentric load on the strut can be minimized.

In addition, by using the jointing device including the anti-skid jaw of the present invention, it is possible to prevent the steel pipe strut from being pushed against the side reinforcement material (bracket) due to the earth pressure transmitted to the wedge wall-> wale- And it is possible to prevent the stability of the member from being deteriorated due to the jam displacement of such a steel pipe strut.

The above effects are merely representative effects of the present invention, and it is needless to say that the effects of the present invention are not limited to those described above.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a wedge-to-steel pipe strand-to-strut reinforcement structure employing a steel pipe strut-to-strut reinforcement joint according to the present invention.
2 is a view showing a steel pipe strut-and-strut reinforcement joint according to an embodiment of the present invention.
3 is a view showing various cross-sectional views of a steel pipe strand-to-ship reinforcement joint according to an embodiment of the present invention.
FIG. 4 is a perspective view showing a steel pipe strut-to-strut reinforcement connected using a steel pipe strut-to-strut reinforcement joint according to an embodiment of the present invention.
Fig. 5 is an enlarged view of the portion " A " in Fig. 4, showing in detail the steel pipe strut-joint reinforcement being connected by a joint.
FIG. 6 is a view showing a jointing of a joining member to a joining device according to the present invention. FIG.
7 is a view showing flange bonding instead of a tubular connecting rod when connecting a steel pipe strut, a stiffener, a stiffener, and a steel pipe strut.
8 is a view showing two methods of connecting a jointing device and a steel pipe strut in accordance with the present invention. Fig. 8 (a) shows a state in which the steel pipe strut is continuously formed, and Fig. 8 (b) shows a state in which the steel pipe strut is cut.
Fig. 9 is a view showing a connection method between the auxiliary stiffener and the wristband; Fig.
10 is a view showing various cross-sectional views of a steel pipe strand-to-ship reinforcement joint according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

In the present specification, the same or similar reference numerals are added to the components corresponding to each other.

In this specification, when explaining directions such as up, down, left, and right directions, it is basically the same as shown in the drawings and may be changed for convenience in explanation. In this specification, terms such as " one side ", " other side ", and the like, are used to denote different sides of the various aspects, and the term " one side " It may be described as "ride" or "one-sided". In the present invention, expressions such as " vertical ", " orthogonal ", " inclined ", and the like are principally related to members (steel pipe struts, etc.)

In the present invention, " direct connection " means that two members are connected directly without separate intermediate members, and " indirect connection " means that two members are connected through separate intermediate members. Thus, the meaning of " direct or indirect connection " includes both that the two members can be connected without a separate intermediate member or using a separate member.

A jointing device 100 of a steel pipe strut-joint reinforcement according to the present invention will be described with reference to the drawings.

1 and the like, in the present invention, a steel pipe strut 1, 1 'connected to a wrist strap 2 and a steel pipe strut 1, 1' and a welt strap 2 are connected in a generally diagonal direction, The joining device 100 is used to connect between the left and right symmetrical four-piece stiffeners 3 formed.

The cubic reinforcement 3 is referred to as a bracket, and may be referred to as a steel pipe reinforcing member or a braided steel pipe constituted by a steel pipe in the present invention.

The steel pipe strut is represented by two reference numerals 1 and 1 'in that the steel pipe strut 1' connected to the wrist strap 2 on the basis of the joint device 100 and the steel pipe strut 1 ' As shown in the left-hand side of FIG. 8, the steel tube struts 1 and 1 'in the present invention may be continuously formed through the joint device 100 The two steel pipe struts 1 and 1 'cut as shown in the right side of Fig. 8 may be connected back and forth through the joint device 100. [0051] As shown in Fig.

As shown in FIGS. 2 to 3, the joint device 100 is formed so as to surround the circumference of a circular cross-section steel tube and tightly contact the steel pipe to tighten the steel pipe. The cross- (10, 11) can be used. Although FIGS. 2 to 3 illustrate the semicycle-type connecting members 10 and 11 that are divided into left and right, the semicycle-type connecting members 10 and 11 may be vertically separated as necessary.

In general, if the upper and lower semicircular connecting members 10 and 11 are used, the steel pipe struts 1 and 1 'are fixed to the lower connecting member, and the steel pipe struts 1 and 1' Since the heavy steel pipe is once mounted on the lower connecting member in the gravity direction and then the other hemispherical member of the steel pipe strut 1, 1 'is covered with the upper connecting member Because it can be constructed.

However, when the steel pipe strut 1 is integrated and the steel pipe strut 1 and the steel pipe strut 1 'are not distinguished from each other, the left and right semicircular connecting members 10 and 11 can be used without fail. Although the present invention is described with reference to the semi-joint type connecting members 10 and 11 separated from the right and left, the present invention is not necessarily limited to the left and right separating type semi-joint type connecting members 10 and 11, It is necessary to fall within the scope of the present invention without discriminating left-hand or right-hand or up-and-down separable semicycle-type connecting members.

However, in the embodiment of the present invention, as shown in FIGS. 2 to 3, the left and right semi-circular connecting members 10 and 11 are not completely separated from each other, And can be fastened to the bolt connection portion 12 only by the bolt 14 as described later. In the case of using the semi-separable semicircular hook-and-loop connecting members 10 and 11 as described above, even if the semicircular semicircular hook-and-loop connecting members 10 and 11 are separated from each other, the steel brackets 1 and 1 ' It is possible to achieve both the stability and the convenience of the construction because the construction can be made by fixing the upper part of the members 10 and 11. In particular, since only one coupling part of the connecting members 10 and 11 is formed, As the construction becomes simpler and the joint part (the part to be disassembled after the construction) is reduced, it is advantageous to reduce the stiffness and the possibility of deformation of the member as much.

That is, the two half-ring-shaped connecting members 10, 11 symmetrically symmetrical to each other are formed in a ring shape extending along the longitudinal direction of the steel pipe strut 1 in a predetermined length, so as to be in close contact with the entire circumference of the steel pipe 1, Shaped plate is formed, and the annular plate formed by connecting two left and right semicycle-shaped connecting members 10 and 11 is separated and opened only as shown in FIG. 2 and the like. Of course, the annular plate may be separated from the lower part and may be opened. However, in a member such as the joint device 100 which connects members such as a steel pipe strut 1, 1 through which a load is applied in a gravity direction, It is preferable to open the upper portion opposite to the gravity direction.

In the present invention, the semicycle-type connecting members 10 and 11 are separated from each other in the upper and lower directions, respectively, in a state in which they are separated from each other in the left and right direction, Or the joining device 100 which is separated from only the left or right side of the joining device 100. In the following description, the joining device 100 will be mainly described with reference to FIG.

Meanwhile, since all the components described in the present invention, for example, the wrist strap 2, the steel pipe strut 1, and the joint device 100 are all made of steel, they can be freely separated from the semi-permanent connection method such as welding Both bolt-nut connections are possible. However, in the present invention, it is preferable to use bolt-nut coupling as much as possible in order to increase the recovery rate of members, and the description of this specification is based on bolt-nut coupling, but this does not mean that welding is impossible.

In addition, for example, in the later-described side connector 20, a plurality of fastening holes 25 are formed in the vertical surface 201 for bolting the four-side stiffener fastening connector 30, and bolts can be coupled through the fastening holes The side connector 20 forms a hollow 26 as in FIG. However, in the case of welding the side connector 20 and the stiffener connector 30, there is no need for a separate hollow 26 as shown in FIG.

The half-hook type connecting members 10 and 11 are divided into left and right parts as shown in the figure, and a bolt connecting part 12 is formed at an upper part of the coupling device 100 as an example for bolt connection therebetween. Of course, the bolt connection part 12 may be formed at the lower part of the joint device 100, or may be formed at the lower part instead of the upper part, .

In addition, in the case of the semi-detachable semicircular hook-type connecting member as described above, the bolt connecting portion 12 is formed on one of the upper portion, the lower portion, or the left or right side.

2, the bolt connection part 12 extends from the circumferential surface of the semicircular connecting member 10, 11 along the longitudinal direction of the joint device 100 in the longitudinal direction of the steel pipe strut 1, The protruding two connecting plates 120 are extended and ribs 13 for dividing the connecting plate 120 at predetermined intervals are formed on the curved surface of the semicircular connecting members 10 and 11 from the connecting plate 120 One or more bolts 14 are fastened between the ribs 13 and the ribs 13 and the bolts 14 are fastened so that the connecting plate 120 is fastened to the steel braces 1, So that the semicircular connecting members 10 and 11 are firmly fixed to the steel pipe strut 1. [

By using such a coupling device 100, it is possible to stably connect the steel pipe struts 1, 1 '.

Hereinafter, a method of stably connecting the four-piece stiffener 3 and the steel pipe strut 1 will be described.

Side connecting members 10 and 11 of the joint device 100 are respectively formed with side connectors 20 to which the four side reinforcement members 3 can be coupled. 2, the side connector 20 has a shape similar to a rectangular parallelepiped and has a shape corresponding to the curved surface of the steel pipe bracket 1 at one side contacting the steel pipe strut 1 as shown in FIG. 3 (a) And is formed into a cut shape. 3 (a), the edge of the side connector 20 extends along the circumference of the semicontinuous connecting members 10, 11 at one side connected to the steel tube strut 1. As shown in FIG. 4, the side connector 20 is formed to extend in the longitudinal direction of the steel pipe strut 1 from the rear end of the joint device 100 toward the wale band, and the steel pipe strut 1 So that the load of the four-sided stiffener 3 is distributed over the wide side surface connector 20 as much as possible and thereafter is transferred to the semicircular connecting members 10 and 11 of the joint apparatus 100 again It is dispersed evenly so that member deformation or unnecessary stress concentration is not generated.

Referring to FIGS. 2, 4 and 5, a plurality of fastening holes 25 are formed on a vertical surface of the side connector 20, that is, a vertical surface 201 facing the four side stiffeners 3, And may be bolted to the inclined surface 301 of the joint reinforcement 30.

In the case of joining the side joints 20 to the side joints 20 through the fastening holes 25 as shown in FIG. 10, the side joints 20 may not be a closed section, The hollow portion 26 should be formed in the side connector 20 as shown in FIG. 2, etc., in which the upper portion can insert a hand or a fastening mechanism. As shown in FIG. 10, when the side connector 20 has a closed cross-section, the bolt can not be fastened, and the side connector 20 of FIG. 10 does not have a fastener because the bolt can not be fastened.

That is, as described above, welding may be performed instead of bolt connection in the connection of the side connector 20 and the stiffener connector 30. In this case, the coupling hole 25 and the hollow 26 are not necessary.

The joint reinforcement 30 connects the joint reinforcement 3 to the joint 100 and the reinforcement 3 is a member extending generally diagonally from the wale 2 as shown in Fig. The connecting rod 30 has a generally trapezoidal cross-section as shown in FIG. 4 and the like in order to connect between the connecting rod 3 and the coupling 100.

5, the inclined surface 301 of the joint reinforcement 30 is connected to the vertical surface 201 of the side joint 20 and the vertical surface 302 of the joint reinforcement 30 is connected to the joint reinforcement 3, And the reinforcement member 260 is generally formed by connecting a cross reinforcing steel member 263 between the two right and left steel plates 261 and 262 and the reinforcing member 260 The left steel plate 261 is connected to the tubular connecting member 27 connected to the four side stiffener 3 and the right side steel plate 262 is connected to the vertical side 302 of the four side stiffener connection 30 in FIG.

Of course, the steel plate 261 may be formed as a part of the tubular connection member 27 and the steel plate 262 may be formed as a part of the arc reinforcement connection 30. [

When the cross-shaped reinforcing plate 262 of the above-described shape is used as the reinforcing member 260 inserted in the middle, the space between the cross-shaped reinforcing plate 262 and the space formed by the left and right steel plates 261 and 262, It is convenient to bolt connection between the steel plate 262 and the joint member 30 and to bolt connection between the steel plate 261 and the tubular joint 27. [

The vertical surface 302 of the cubic stiffener connection hole 30 may be connected to the steel plate 262 and the vertical surface 302 and the steel plate 262 may be formed as one member as described above. Since the inclined surface 301 of the four-sided stiffener connection hole 30 is in close contact with the vertical surface 201 and the four-sided stiffener 3 is positioned on the steel pipe bracket 1, Is formed.

As described above, the lateral pressure transferred from the turntable wall to the wristband 2 is transmitted to the side connector 20 of the steel bracket 1 through the four-side stiffener 3, Since the axis of the lateral pressure is inclined with respect to the longitudinal axis of the steel pipe strut 1, the left and right two-side stiffeners 3 and the stiffener connection holes 30 thereof are joined in the direction of the arrow in FIG. The steel pipe strut 1 may not be eccentric when it is connected to the device 100 and must be installed symmetrically with respect to the steel pipe strut 1 and the joint device 100.

The steel pipe strut 1 is called a strut, but actually acts as a compression member (column) rather than acting as a horizontal member (beam or girder). Therefore, when the eccentric member is caught, the stability of the member is seriously damaged .

On the other hand, due to lateral pressure transmitted through the four-sided stiffener 3, a warp phenomenon may occur between the warp stiffener 3 and the steel pipe strut 1. In order to solve this problem, (40) is formed at the edge of the vertical plane (201) as a protruding shape at a predetermined height from the vertical plane (201). (For example, a -90x90x10 or a-100x100x10) or a " c " -shaped steel (for example, -380x100x10.5x16), which is erected in a direction orthogonal to the vertical plane 201, And can serve as a stopper that can not move beyond the jam-preventing jaw 40 and the jib reinforcement 30.

5, the protruding jaw 40 protrudes from one end of the side connector 20 at the opposite end of the wristband 2 of the joint device 100. As shown in FIG.

In addition to the effect of preventing the warp between the warp stiffener 3 and the steel pipe strut 1 in the case of providing the abovementioned warp preventing jaws 40, the position of the warp stiffener 3 is symmetrical with respect to the steel pipe strut 1 This is because it is possible to prevent the warp-resistant jaws 40 from being pushed in as well as in the course of the installation process.

9, in order to more effectively prevent the warp of the warp reinforcement 3 and to more effectively reduce the warp of the steel pipe strut 1 more effectively, as shown in Fig. 9, The connection structure 60 may also be provided with a jamming prevention tongue 41 (a circle in Fig. 9).

9, the connecting structure 60 includes a tubular connecting member 61 inserted into the four-sided reinforcing member 3, a cross-shaped reinforcing plate 63 connected to the tubular connecting member 61, a cross-shaped reinforcing plate 63 And a connecting port 64 for connecting the connecting jack 62 to the wale 2 such that the one surface is formed in a vertical plane and the other plane is formed in an inclined plane .

A connection jack 62 such as an air jack is provided between the wrist strap 2 and the steel wire brace 1 or between the wrist strap 2 and the wire reinforcement 3 and may be connected to the steel wire brace 1 But it can also be installed between the steel pipe strut 1 'to control the gap between the members in a flexible manner according to the construction site. 1, the connecting jacks 62 are not all provided in the wristband 2 but may be provided only on one side of the wristband 2. Therefore, in the present invention, the wristband 2 And the case where the connection jack 62 is included in connecting the steel pipe strut 1, the wrist strap 2 and the side reinforcement 3, and the steel pipe strut 1 and the steel pipe strut 1 ' And falls within the scope of the invention.

The pushing jaw 41 provided between the wale 2 and the connecting structure 60 as described above, specifically between the wale 2 and the connecting port 64, The connecting structure 60 can be prevented from being pushed against the wristband 2 by the reaction force of the connecting structure 60 in the process of being transmitted through the connecting structure 60 to the four-side stiffener 3, It is possible to prevent the warp stiffener 3 and the steel pipe strut 1 from being thrown.

The jumping-off preventing chin 40 and the jumping-off preventing chin 41 may be used together or only the jumping-off preventing chin 40 may be used.

9 (a) shows that the push-up preventing jaw 40 is formed as a " d "

7, when the four-sided stiffener 3 is connected to the steel pipe strut 1, the tubular connecting member 27 is not connected between the four-sided stiffener 3 and the four-sided stiffener connection 30, For example between the ends of the four stiffeners 3 and the ends of the four stiffener joints 30 and between the ends of the four stiffeners 3 and the four stiffener joints 30, And then the bolts 73 are connected to the four-sided stiffener connection port 30 and the four-sided stiffener 3 through the holes and then the wings 70 and 71 are connected to the wings 70 and 71 A separate rib 72 may be formed on the flange, and then the rib and the stiffener connector 30 may be welded.

Hereinafter, a method of constructing the wale band 2 by connecting the steel wire strand 1 and 1 'and the four-side reinforcement 3 using the joint 100 according to the present invention will be described.

As shown in FIG. 1 and the like, the steel pipe struts 1 and 1 'are connected to the wrist strap 2 by using a tubular connecting member 61 and / or a jack 62, The connection between the stiffener 3 and the wale 2 is similar. A joint device 100 such as FIG. 2 is installed on the steel pipe strut 1, 1 '. 8 (b), one end of the joint device 100 is installed on the steel pipe strut 1 'adjacent to the wristband 2 and the other end of the joint device 100 is connected to the other end of the joint device 100 in the direction of arrow It is possible to connect a separate steel bracket 1 or the joining device 100 itself is constituted by left and right or upper and lower separable type semicycle connecting members 10 and 11 so that the steel bracket 1 , 1 ') by inserting the half-hook type connecting member (10,

9, one end of the warp stiffener 3 is connected to the wrist strap 2 in a manner similar to that of the steel pipe strut 1, 1 ', and the other end of the warp stiffener 3 is connected to the wrist strap 2, To the side connector (20) of the device (100).

Further, the tubular connecting member 61 may be used when connecting the warp stiffener 3 to the wristband 2, but other methods such as flange bonding and the like may be employed as in Fig. 7 as described above.

The above construction method is merely an example, and the order of construction may vary depending on the actual situation of the site, the span of the steel pipe strut and the side reinforcement, and the position of the center pile in the span of the steel pipe strut, It is within the right scope of the present invention that the joint reinforcement (bracket) is applied to the wale-pipe joint bracket structure using the joint device 100. [

While the present invention has been particularly shown and described with reference to certain preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It should be understood that various changes and modifications may be made by those skilled in the art. In addition, the accompanying drawings are shown not to scale but to partially enlarge and reduce in order to explain the technical idea of the present invention.

1, 1 ': Steel pipe strut
2: wale
3: Subsidiary reinforcement, braced steel pipe, bracket
10, 11: a half-ring type connecting member (annular plate when 10 and 11 are combined)
12: Bolt connection
13: ribs attached to the connecting plate of the bolt connection part
14: Bolt fastened to the connection plate of the bolt connection part
20:
25: Tightening hole of side connector
26: hollow formed in side connection
27: Tubular connector
30: Joint of reinforcement
40:
100: steel pipe strut connection
120: Connection plate of the bolt connection
201: Vertical side of side connector (formed with fastening holes)
260: Reinforcing hole
262: Cross reinforcement hardware
301: Slope of the subsection
302: Vertical plane of the subsection

Claims (15)

A steel pipe strut jointing device for connecting steel pipe strut used for strand-stranding and symmetrically symmetric to left and right of the steel strut strut and formed between the wrist strap and the steel strut strut (formed by a steel pipe)
And a pair of left and right semicycle-type connecting members extending in a longitudinal direction of the steel pipe sprocket in a predetermined length so as to close and cover the whole circumference of the steel pipe sprocket, Shaped plate,
And a side connector connected to outer circumferential surfaces of the two semicycle-type connecting members to directly or indirectly connect the four side reinforcement members, respectively. The method according to claim 1,
A bolt connecting portion is formed at an upper portion of the annular plate which is detachably opened to allow the two semicycle-like connecting members forming the annular plate to be in close contact with each other,
The bolt connection part is formed with two connecting plates protruding upward from the circumferential surface of the semicircular connecting member along the longitudinal direction of the steel pipe strut, and a plurality of ribs dividing the connecting plate at predetermined intervals are formed on the connecting plate And one or more bolts are fastened between the ribs and the ribs. By tightening the bolts, the connecting plate is brought into close contact with the steel pipe stranded bobbin to form the semi- Wherein the member is formed to be firmly fixed to the steel pipe strut. 3. The method of claim 2,
The lower portion of the annular plate is also formed to be releasably open,
And a bolt connection part is formed at a lower part of the annular plate so that the two semicycle-like connecting members forming the annular plate can be closely contacted to each other. 3. The method according to claim 1 or 2,
A plurality of fastening holes are formed in a surface of the side connector facing the four-sided reinforcing member,
Wherein the side connector has a hollow formed therein so that the bolt can be fastened to the fastener through the hollow. 3. The method according to claim 1 or 2,
And a joint reinforcement for connecting the side reinforcement to the side joint. The method of claim 5, wherein
Wherein the side surface of the side connector has a vertical surface,
Wherein the side of the side reinforcement connecting member is formed with a sloping surface contacting with a vertical surface of the side connecting member and the opposite surface to which the four-side stiffening member is directly or indirectly connected is formed as a vertical surface to have a generally trapezoidal cross-sectional shape. The method according to claim 6,
The sleeve reinforcement being connected to the tubular link,
And a reinforcing member including a cruciform reinforcing member is connected between the tubular connecting member and the vertical surface of the joint member. 3. The method according to claim 1 or 2,
A vertical protrusion protruding at a predetermined height in a direction orthogonal to the vertical surface is formed on a vertical surface to which the four-sided reinforcing member is directly or indirectly connected,
Wherein the jam preventing jaw is formed so as to function as a stopper which sets a limit of the movable jib connected to the steel pipe bracket so as to be movable in the longitudinal direction of the steel pipe bracket,
Wherein the jam preventing jaw is also formed at the end edge of the side connector at the side opposite to the wale so as to prevent a lateral pressure transmitted from the wale band from being transmitted through the jamb reinforcement to the steel pipe strut. 9. The method of claim 8,
Wherein the jam preventing jaw is formed of an iron plate or an " a " -shaped steel or a " -shaped steel " formed in an upright direction perpendicular to the vertical surface of the side connector. The method according to claim 6,
A flange joint is provided between the ends of the four-sided stiffener and the four-sided stiffener, for example, a flat wing at right angles to the ends of the four-side stiffener and the four-side stiffener connection, a hole is formed in the wing, And a bolt can be connected to the coupling member. A wale installed horizontally to the left and right sides of the earth wall at the site of underground earthworks,
A pair of right and left wales, a pair of right and left wales,
(Made of a steel pipe) disposed between the wale band and the steel pipe strut symmetrically to the left and right of the steel pipe strut,
A wale-braid steel bracket-steel pipe reinforcement structure for underground earthwork construction comprising the joint device as claimed in any one of claims 1 to 3 for connecting the steel bracket bracket and the bracket reinforcement. 12. The method of claim 11,
A vertical protrusion protruding at a predetermined height in a direction orthogonal to the vertical surface is formed on a vertical surface to which the four-sided reinforcing member is directly or indirectly connected,
Wherein the jam preventing jaw is formed so as to function as a stopper which sets a limit of the movable jib connected to the steel pipe bracket so as to be movable in the longitudinal direction of the steel pipe bracket,
Wherein the sagging preventing jaw is formed at an end edge of the side connecting portion opposite to the wale so as to prevent lateral pressure transmitted from the wale band from being transmitted through the side reinforcing member to the steel pipe strut. Steel Pipes - Steel Pipes Stiffener Structures. 13. The method of claim 12,
Wherein a warpage preventing jaw for preventing the warp reinforcement member from being pushed against the wrist strap by a lateral pressure transmitted to the warp stiffener through the wrist strap is provided between the warp stiffener and the wrist strap, Welded wire for construction - Steel pipe brace - Steel pipe reinforcement structure. A steel pipe strut jointing device for connecting a steel pipe strut and a stiffener (formed by a steel pipe) used in a strut-strut construction,
An upper semicircular plate extending along the steel pipe strut with a predetermined length so as to be able to close and cover half the circumference of the steel pipe strut,
A lower semicircular plate formed to correspond to the upper semicircular plate and configured to close and cover the other half of the periphery of the steel pipe strand,
And a side connector which is connected to the circumferential surfaces of the upper and lower semicircular plates and directly or indirectly connects the four side reinforcements. A step of installing a steel pipe strut on the welt,
Installing a jointing device according to any one of claims 1 to 3 on the steel pipe strut,
(Formed of a steel pipe) disposed between the wale band and the steel pipe strut symmetrically to the left and right of the steel pipe strut, and connecting the wrist strap and the steel pipe strut to the joint device. - Construction method of steel pipe reinforcing material.

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