KR102133053B1 - 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

The joint device according to the present invention is for connecting a steel pipe support beam used in the construction of a belt-brace, and a stiffened steel material (formed of a steel pipe) disposed between the strip and the steel pipe support beam symmetrically to the left and right of the steel pipe support beam. As a steel pipe brace joint, it is made of an integral member that is connected to two left and right semi-circular connecting members so that it extends along a lengthwise direction of the steel pipe brace and covers the entire circumference of the steel pipe brace with a predetermined length, but only the upper part is separated. It includes an annular plate that is open as possible, and side connectors that are respectively connected to the outer circumferential surfaces of the two semi-circular connecting members to directly or indirectly connect the stiffeners, respectively.

Description

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

The present invention supports a steel pipe brace by connecting at an angle between a steel pipe (ie, a steel pipe brace) and a steel pipe and a brace, which are used as braces in a girdle-brace structure used as a provisional material for supporting the load of the earth wall in an underground mud construction. It relates to a joint device for connecting a steel pipe (that is, a brace steel pipe) that serves as a brace, and a band-to-steel pipe support structure using the joint.

Recently, as the necessity to expand social indirect facilities has increased, many underground excavation works in the city center are underway. The characteristics of the underground excavation work are the maximum space excavation and the depth excavation to maximize the use of the limited underground space and the close construction in which the underground structures such as subway, elevated road, underground structures, office space and residential structures are in close proximity. have.

In particular, the underground excavation work for constructing a large-scale underground structure in a limited space in the downtown area should be considered as the first step to stabilize the surrounding ground. It's an important part. The mudguard construction method can be roughly divided into two methods: a method of using a temporary mudguard structure and a method of constructing an underground structure in parallel with excavation work, as the structure acts as a mudguard wall in response to soil pressure and water pressure. Hypothetical mud structures have the risk of collapsing the mud structures due to the possibility of civil complaints and the stability problems of the surrounding grounds, and there have been many cases that actually collapsed. In addition, there are a number of cases in which civil complaints are generated due to displacement of surrounding grounds, resulting in suspension of construction or compensation for complaints.

Temporary facilities used for earthmoving in the current earthwork are using steel piles and earth plates, or CIP (Cast in Place Wall), SCW (Soil Cement Wall), etc., and the type of supporting the earthenware is supported by the existing hypothesis Strut. There are two methods: Earth Anchor, Soil Nailing, Rock Bolt, and Top-Down method.

In the case of using a temporary strut, it is highly likely to cause an increase in air due to the installation and dismantling process of the temporary material and a change in the surrounding ground during dismantling, but the working environment during underground construction is relatively good compared to the top-down method. It has the advantage of reducing the cross-section of the slab and is currently widely used.

On the other hand, in the case of using the above-described hypothetical strut, in order to support the lateral pressure of the earth wall, H-Pile stakes are installed vertically on the earth walls facing each other, and then a number of longitudinal bands are arranged in a direction perpendicular to the H-Pile stakes above. Is done. In addition, a support beam is installed between the above-mentioned strip and the strip. Eventually, the lateral pressure of the earth wall is transmitted in the order of H-Pile pile -> girdle -> brace.

On the other hand, the brace between the girdle and the girdle serves as a point of the girdle, and in the end, the girdle between the girdle and the girdle bends against the load transmitted from the pile.

However, although the bending deformation of the member differs depending on the support condition of the point, in general, for example, in the case of a simple beam in which the bending deformation increases in proportion to the span of the belt length and the uniformly distributed load is applied, span Increases in proportion to the square of. For this reason, it is important to stably support the support beams serving as points in order to prevent bending deformation of the belt length.

On the other hand, for the purpose of reinforcing the horizontal spacing of the supporting beams acting as a point for the belt length, or for reinforcing the edge bands or the lengths of the edge bands, a stiffener (bracket) between the band lengths (horizontal members) and the beam lengths (vertical members to the band lengths). Can be used.

[Figure 1: Construction of conventional brackets]

In general, when the bending moment value of the belt length is large or when buckling is expected, reinforce the band by installing a bracket (screw reinforcement) at the brace installation point.

However, as shown in Figure 1 above, even when a steel pipe is used as a support beam, it is very difficult to combine the curved surface of the steel pipe and the plane of the H-file when using an H-file as a stiffener, so it is connected to a stiffener. It was inevitable to adopt a method of constructing an H-file instead of a steel pipe and connecting the H-file and a steel pipe support beam using a separate connecting material as shown in the picture above.

However, the use of different cross sections of steel pipes and H piles depending on the span position of the vertical member support beam is complicated by buckling design due to the difference in the rigidity of both members, and is a process due to the design and construction of members of different cross sections. There were problems of increase and cost increase.

On the other hand, when installing the stiffener, the lateral pressure (earth pressure, water pressure, etc.) applied to the girdle is transferred to the brace through the stiffener, causing displacement of the brace in the longitudinal direction of the brace in the connection between the stiffener and the brace. A problem arises, which can significantly impair the structural stability (occurrence of buckling due to eccentricity) of the supporting beam acting as a compressive material, so measures should be taken to suppress longitudinal displacement due to the pushing of the supporting beam when using stiffeners. .

In addition, since the band-brace structure itself is a provisional material for underground mudguard construction, installation and dismantling are essentially repeated, so a connection structure between steel pipes and beams is required to minimize damage to the cross-section of the member due to repeated installation and disassembly. Is done.

Patent No. 10-1308575

Therefore, in the present invention, as shown in Figure 1 above, in order to solve the problem of using (mixing) heterogeneous members with each other as a support beam, a method of constructing a steel beam of a stiffened steel and a steel pipe support beam with the same type of steel pipe is proposed. We would like to propose a new method of connection between the steel pipe support beam and the sabo steel, and the sabo steel and the belt.

That is, when using a steel pipe also sabo steel is required to connect the technology between the sabo steel and the steel pipe, when welding the sabo steel and the steel pipe may be the appearance of Figure 2 below, such a steel pipe and the slope of the steel pipe Welding the cross-section is almost impossible to secure quality in the field by operations such as cutting for welding, and above all, it is not desirable to increase the recovery rate of the member. Therefore, one object of the present invention is to provide a separate joint device between a steel pipe support beam and a steel pipe of a sabo steel (gaesae steel pipe).

[Fig2: Picture of welding steel pipe support beam and sabo steel pipe]

On the other hand, in the case of installing the stiffeners (bracket feet) on the steel pipe braces, it is necessary to prevent the bending moment due to the eccentric load on the braces with symmetrical symmetry, so another object of the present invention is that the steel pipe braces against the stiffeners (bracket feet) It is to provide a joint device that cannot be pushed by the horizontal force transmitted from the stiffener.

In addition, from the following description, matters apparent to those skilled in the art may be understood as another object of the present invention.

The joint device according to the present invention is for connecting a steel pipe support beam used in the construction of a belt-brace, and a stiffened steel material (formed of a steel pipe) disposed between the strip and the steel pipe support beam symmetrically to the left and right of the steel pipe support beam. As a steel pipe brace joint, it is made of an integral member that is connected to two left and right semi-circular connecting members so that it extends along a lengthwise direction of the steel pipe brace and covers the entire circumference of the steel pipe brace with a predetermined length, but only the upper part is separated. It includes an annular plate that is open as possible, and side connectors that are respectively connected to the outer circumferential surfaces of the two semi-circular connecting members to directly or indirectly connect the stiffeners, respectively.

In the joint device according to the present invention, a bolt connection portion is formed on the detachably open upper portion of the annular plate to allow the two semi-circular connecting members forming the annular plate to be in close contact with each other, and the Two connecting plates protruding upward from the circumferential surface of the semi-circular connecting member are formed in the bolt connecting portion along the longitudinal direction of the steel pipe brace, and a plurality of ribs dividing the connecting plates at predetermined intervals from the connecting plate It is formed to extend downward along the curved surface of the semi-ring-shaped connecting member, at least one bolt is fastened between the rib and the rib, and by tightening the bolt, the connecting plate is in close contact with the steel pipe support, so that the semi-ring-shaped connecting member It may be formed to be securely fixed to the steel pipe support beam.

In the joint device according to the present invention, the lower portion of the annular plate is formed to be detachably opened, and the two semi-circular connecting members forming the annular plate can be connected to each other in close contact with each other. A bolt connection can be formed.

In the joint device according to the present invention, a plurality of fastening holes are formed on the side facing the stiffener from the side connector, and the side connector has a hollow formed therein, so that the bolt is fastened to the fastening hole through the hollow. You can make it possible.

In the joint device according to the present invention, a stiffener connecting portion for connecting the stiffener and the side connector may be included.

In the joint device according to the present invention, the surface on which the fastening hole of the side connector is formed is formed as a vertical surface, and the surface of the stiffener connection member is formed as an inclined surface and a surface contacting the vertical surface of the side connector is connected indirectly or indirectly. The opposite surface is formed as a vertical surface and may have a trapezoidal cross-sectional shape as a whole.

In the joint device according to the present invention, the stiffener may be connected to a tubular connecting member, and between the tubular connecting member and the vertical surface of the stiffener connecting member may be connected a reinforcement including a cross-shaped reinforcement.

In the joint device according to the present invention, a vertically connected vertically or indirectly connecting the stiffener at the side connection port is formed with an anti-tilt protrusion protruding at a predetermined height in a direction orthogonal to the vertical surface, and the anti-tilt member is the steel pipe support beam The stiffener connected to the stiffener is formed to function as a stopper for setting a limit that can move in the longitudinal direction of the steel brace, and the thrust prevention jaw is also transverse pressure transmitted through the stiffener from the band to the steel pipe brace. It can be formed at the edge of the opposite end of the band in the side connector to prevent the occurrence of the push against.

In the joint device according to the present invention, the pushing jaw may be formed of a steel plate standing in a direction orthogonal to the vertical surface of the side connector, or "a" section steel, or "c" section steel.

In the joint device according to the present invention, a flange is bonded between the end of the stiffener and the stiffener connector, for example, at each end of the stiffener and the stiffener connector, a flat blade is attached at a right angle to each other and a hole is drilled in the wing. It is possible to connect the stiffener connector to the bolt through the hole.

Steel strip for the underground mud construction according to the present invention-steel pipe buttress-steel pipe sabo steel structure, a steel pipe installed horizontally in the horizontal direction on the earth wall surface at the underground mud construction site, and a steel pipe orthogonally installed between the left and right strips It is composed of a bracing beam, a stiffening steel material (formed of a steel pipe) disposed symmetrically to the left and right of the steel pipe bracing beam and formed of a steel pipe, and the above-described joint device for connecting the steel pipe bracing beam and the stiffening steel material to each other.

In the underground mudguard construction according to the present invention, the steel strip brace-steel pipe stiffener structure, on the vertical surface to which the saddle reinforcement is directly or indirectly connected at the side connection port, the anti-skid chin protruding at a predetermined height in a direction orthogonal to the vertical surface Is formed, the anti-slip jaw is formed so as to be able to function as a stopper for setting a limit to move the longitudinal direction of the steel pipe support beams connected to the steel pipe support beam, the anti-slip jaw prevents the stiffener from the band length In order to prevent the lateral pressure transmitted through the steel pipe brace from being pushed, it may be formed at the end edge of the opposite side of the belt in the side connector.

In the underground mud construction according to the present invention, the sash-steel pipe brace-steel pipe sash reinforcement structure, the sash reinforcement is pushed against the sash by the lateral pressure transmitted through the sash between the sash stiffener and the sash The anti-jungle jaw may be installed on the belt to prevent it.

The joint device according to the present invention is a steel pipe brace that is used to connect a steel pipe brace and a stiffened steel material (formed of a steel pipe) used in the construction of a belt-brace, and extends along the steel pipe brace to a predetermined length to extend the steel pipe brace. Upper half-circular plate formed to close and cover the half of the circumference, lower half-circular plate formed to correspond to the upper half-circular plate and close to cover the other half of the circumference of the steel pipe brace, the upper half-ring plate And it is connected to each of the circumferential surface of the lower half-ring plate includes a side connector for directly or indirectly connecting the stiffener.

Underground mud construction according to the present invention, the steel strip-steel pipe support beam-steel pipe stiffener construction method, the step of installing a steel pipe support beam to the strip, installing the joint according to the invention to the steel pipe support beam, symmetrical left and right of the steel pipe support beam In addition, the step of connecting the sash reinforcement (formed of a steel pipe) disposed between the jangjang and the steel pipe support beam to the joint.

According to the present invention, the connection between the bracing beam and the stiffened steel (bracket foot) can be simplified to obtain an effect of shortening the process and cost reduction, and above all, even if both the bracing beam and the stiffened steel (bracket foot) are used as steel pipes, they can be welded between them. Since there is no need, it can be easily dismantled and recombined, and the member recovery rate as a provisional material can be increased. That is, damage to the member cross-section is minimized.

Particularly, when the joint device according to the present invention is used, the joint device itself is separable from left to right or up or down, or can be opened from the left and right or up and down, and is used by connecting a saber steel (bracket) to any point of the steel pipe support beam. It is very convenient and can be used not only in the connection between two steel pipe braces separated from each other-but also in one continuous steel pipe brace without separate connections. For this reason, it is not necessary to form a steel pipe support beam connection part unnecessarily as shown in Figure 1 above, that is, to install a steel reinforcement material, that is, it is not necessary to form a joint part by deliberately separating the steel pipe support beam into two small spans. .

In addition, since the steel pipe is used as a stiffener, the load of the belt length to the steel pipe braces is more uniformly transmitted through the stiffeners on the left and right due to the symmetrical cross-section of the steel pipe itself, thereby minimizing the occurrence of bending moments due to eccentric load on the braces.

In addition, when the joint device including the anti-slip jaw of the present invention is used, the wall of the earth is prevented from being pushed against the stiffener (bracket) due to the earth pressure transmitted to the wall -> sash -> stiffener (bracket) -> steel pipe brace. It is possible to prevent the member stability from being deteriorated due to the jungle displacement of the steel pipe support beam.

The above effects are only representative of the representative effects of the present invention, and it is natural that the effects of the present invention are not limited to the above descriptions.

1 is a view showing a steel pipe bracing beam-sabo steel structure using a steel pipe bracing beam-sabo steel joint device according to the present invention.
Figure 2 is a view showing a steel pipe support beam-sabo steel joint device according to an embodiment of the present invention.
Figure 3 is a view showing various cross-sectional views of a steel pipe bracing beam-sabo steel joint device according to an embodiment of the present invention.
Figure 4 is a perspective view showing that the steel pipe support beam-sabo steel material is connected using a steel pipe support beam-sabo steel joint device according to an embodiment of the present invention.
Figure 5 is an enlarged view of a portion "A" in Figure 4 is a view showing in detail that the steel pipe brace-sabo steel is connected by a joint.
6 is a view showing a state in which the stiffener is connected to the joint device according to the present invention.
7 is a view showing a flange connection instead of a tubular connecting rod when connecting between a steel pipe brace and a stiffener, a stiffener and a steel pipe brace.
8 is a view showing two methods of connecting a joint and a steel pipe support according to the present invention. 8 (a) is a steel pipe brace is continuously formed, Figure 8 (b) is a steel pipe brace is cut form.
9 is a view showing a connection method between a stiffener and a strip.
10 is a view showing various cross-sectional views of a steel pipe support beam-sabo steel joint device according to another embodiment of the present invention.

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

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

When describing the same directions as the top, bottom, left, and right in this specification, in principle, it is based on what is shown in the drawings and may be different for convenience according to the description. In this specification, terms such as "one side", "other side", etc. are used to refer to different faces among several faces, and a part described as "one side" or "other side" in some parts is contrary to other parts depending on the purpose of explanation. It can also be described as "other side" or "one side". In addition, in the present invention, the expressions such as “vertical”, “orthogonal”, and “inclined” are, in principle, about a standard member (such as a steel pipe support), but may also be different for convenience.

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

The joint device 100 of the steel pipe support beam-sabo steel of the present invention will be described with reference to the drawings.

Referring to FIG. 1 and the like, in the present invention, a steel pipe brace (1, 1') connected to a strip (2) and a steel pipe brace (1, 1') and a strip (2) are generally connected in a diagonal direction to the steel pipe. The joint device 100 is used to connect between the left and right symmetric stiffeners 3 formed.

The stiffener 3 is called a bracket, and in the present invention, it is also referred to as a steel pipe stiffener composed of a steel pipe, or a brace steel pipe.

The steel pipe support beams represented by two reference numerals (1, 1') are the steel pipe support beams (1') connected to the sash (2) and the joint device (100) on the opposite side based on the joint device (100). (1) only to distinguish, as can be seen in the left picture of Figure 8, in the present invention, the steel pipe braces (1, 1') may be formed continuously through the fitting device 100 (this In case 1 and 1'are the same steel pipe braces), as shown in the right figure of FIG. 8, two cut steel pipe braces 1 and 1'may be connected back and forth through the fitting device 100.

On the other hand, the fitting device 100 is formed so as to be tightly adhered to the steel pipe and tighten the steel pipe while surrounding the perimeter of the steel pipe having a circular cross section as shown in FIGS. 2 to 3. (10, 11) can be used. In FIGS. 2 to 3, the semi-circular connecting members 10 and 11 are divided into left and right, but if necessary, the semi-ring connecting members 10 and 11 that are separated up and down may be used.

In general, if using a semi-circular connecting member (10, 11) that is separated up and down, there is an effect that the steel pipe brace (1, 1') is mounted on the lower connecting member, the steel pipe brace (1, 1') cut from each other It may be more stable in construction to connect, because the heavy steel pipe is first mounted on the lower connecting member in the direction of gravity, and then the remaining hemispheres of the steel pipe braces (1, 1') are covered with the upper connecting member. Because it can be constructed.

However, when the steel pipe brace (1) is integral and the steel pipe brace (1) and steel pipe brace (1') are not distinguished, the left and right semi-circular connecting members (10, 11) can be used without difficulty. The invention is mainly described on the basis of the semi-ring-shaped connecting members 10 and 11 separated from the left and right, but the present invention is not necessarily limited to the left-right separation-type connecting members 10 and 11, and adopts the technical configuration described in the present invention. If it does, it should belong to the scope of the present invention without discriminating between left and right or up and down separable semi-ring type connecting members.

However, in one 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, but are continuously connected to each other in the lower portion and the upper portion. It may be configured to be fastened with the bolt 14 as described later only in the bolt connection portion 12. When using such a semi-separable semi-ring type connecting member (10, 11), even if it is separated from side to side, after inserting the steel pipe braces (1, 1') on its successive lower surface and mounting it, the semi-ring type connection is performed. Since the construction is possible by fixing the upper part of the members 10 and 11, it is possible to achieve both the stability and convenience of the construction, and most of all, the connection members 10 and 11 are formed not by two but by one. As the construction becomes simple, and the joining portion (the part to be disassembled after construction) decreases, the rigidity of the member or the possibility of deformation is reduced, which is advantageous.

That is, the two semi-ring-shaped connecting members 10 and 11, which are symmetrical to each other, extend along the longitudinal direction of the steel pipe brace 1 with a predetermined length and are formed to close and cover the entire circumference of the steel pipe 1 The annular plate formed by connecting two left and right semi-circular connecting members 10 and 11 is formed and the upper plate can be separated and opened as shown in FIG. 2 and the like. Of course, the annular plate may be detached from the bottom and may be opened, but in the case of a member such as a joint device 100 connecting a member such as a steel pipe brace (1, 1) through which a load flows in the direction of gravity in general, in FIG. It is desirable to open the upper part opposite to the direction of gravity as shown.

In the present invention, the semi-ring-shaped connecting members 10 and 11 are in a form in which they are all separated from the top and bottom, a form in which they are separated from the left and right, or a form separated only from the top, or a form separated only from the bottom, as shown in FIG. 2. Or, it is used as a meaning encompassing all of the joint devices 100 in a form separated from only one part of the left or right side.

On the other hand, all the components described in the present invention, for example, the strip (2), the steel pipe support (1), the joint device (100), etc. are all applicable to the steel material, so that they can be freely separated from the semi-permanent coupling method such as welding. All bolt-nut combinations are possible. However, in the present invention, it is preferable to use a bolt-nut coupling as much as possible to increase the member recovery rate, and the description of this specification is also described based on the bolt-nut coupling, but this does not mean that welding is impossible.

In addition, for example, the side connector 20, which will be described later, is formed with a plurality of fastening holes 25 on the vertical surface 201 for bolt coupling of the stiffener connection port 30, and enables bolting through the fastening hole The side connector 20 forms a hollow 26 as in FIG. 2. However, in the case of welding the side connector 20 and the saber reinforcement connector 30, a separate hollow 26 is not required as in FIG. 10.

The semi-ring-shaped connecting members 10 and 11 are divided left and right as shown in the drawing, and a bolt connecting portion 12 is formed on the upper portion of the fitting device 100 for bolt coupling between them. Of course, the bolt connection portion 12 may be further formed on the lower portion of the fitting device 100, or may be formed on the lower portion instead of the upper portion. It may be formed.

In addition, in the case of the semi-separable semi-ring type connecting member as described above, the bolt connection portion 12 is formed on one of the upper or lower portions or one of the left or right sides.

The bolt connecting portions 12 are respectively from the circumferential surfaces of the semi-circular connecting members 10 and 11 along the longitudinal direction of the fitting device 100 in the longitudinal direction of the steel pipe brace 1 as shown in FIG. Two protruding connecting plates 120 are extended, and ribs 13 for dividing the connecting plates 120 at predetermined intervals extend the curved surfaces of the semi-circular connecting members 10 and 11 from the connecting plates 120. Accordingly, it is formed to extend downward, and at least one bolt 14 is fastened between the rib 13 and the rib 13, and by tightening the bolt 14, the connecting plate 120 is a steel pipe support (1). The semi-circular connection members 10 and 11 are tightly fixed to the steel pipe support beam 1 in close contact with respect to.

When such a joint device 100 is used, it is possible to stably connect the steel pipe support beams 1 and 1'.

Hereinafter, a method for stably connecting the steel reinforcement 3 and the steel pipe support 1 will be described.

Side joints 20 to which the stiffeners 3 can be coupled are formed on the left and right semi-circular connection members 10 and 11 of the joint device 100, respectively. The side connector 20 is generally shaped like a cuboid when viewed in FIG. 2, but as seen in FIG. 3(a), along the curved surface of the steel pipe brace 1 at one side in contact with the steel pipe brace 1 It is formed in a cut shape. Therefore, as can be seen in FIG. 3(a), the edge of the side connector 20 extends along the circumference of the semi-circular connecting members 10 and 11 on one side connected to the steel pipe brace 1. As can be seen in Figure 4, the side connector 20 is formed to extend in the longitudinal direction of the steel pipe support beam 1 from the rear end of the joint device 100 to the belt length, and the steel pipe support beam 1 of the joint device 100 ) Can be formed over the entire lengthwise direction, so that the load of the stiffener 3 is distributed to the side connector 20 having the largest area as much as possible, and then again to the semi-circular connecting members 10 and 11 of the joint device 100). It is evenly distributed to prevent member deformation or unnecessary stress concentration.

2, 4 and 5, a plurality of fastening holes 25 are formed on a vertical surface in the left-right direction of the side connector 20, that is, the vertical surface 201 facing the stiffener 3, which will be described later. It can be bolted to the inclined surface 301 of the sabo steel connector 30.

In addition, when bolting the stiffener connecting portion 30 and the side connector 20 through the fastening hole 25 as described above, as shown in FIG. 10, the side connector 20 should not be a closed section, As shown in FIG. 2, a hollow 26 through which a worker inserts a hand into the side connector 20 or a fastening mechanism may be inserted should be formed. When the side connector 20 is a closed cross-section as shown in FIG. 10, bolting is impossible and welding is performed with the stiffened steel connector 30, so a fastening hole is not shown in the side connector 20 of FIG. 10.

That is, as described above, in the connection between the side connector 20 and the stiffener connector 30, welding is also possible instead of the bolt connection, and in this case, the fastening hole 25 or the hollow 26 is not required.

The stiffener connector 30 is a member that connects the stiffener material 3 to the fitting device 100, and as shown in FIG. 1, the stiffener member 3 extends substantially diagonally from the belt length 2, so In order to connect between (3) and the fitting device 100, the stiffened steel connector 30 has a substantially trapezoidal cross section as in FIG.

As shown in Figure 5, the inclined surface 301 of the stiffener connector 30 is connected to the vertical surface 201 of the lateral connector 20 and the vertical surface 302 of the stiffener connector 30 is a stiffener 3 It is connected to a reinforcing hole 260 connected to and the reinforcing hole 260 is generally formed by connecting a cross-shaped (+) reinforcing hardware 263 between two left and right steel plates 261 and 262, and the reinforcing hole 260 In FIG. 5, the left steel plate 261 is connected to the tubular connecting material 27 connected to the stiffener 3 and the right steel plate 262 is connected to the vertical surface 302 of the stiffener connection 30.

Of course, the steel plate 261 may be formed as a part of the tubular connecting material 27, and the steel plate 262 may be formed as a part of the saber reinforcement connector 30.

When using the reinforcing tool 260 in which the cross-shaped reinforcing plate 262 of the above type is inserted in the middle, an operator hands between the space formed by the cross-shaped reinforcing plate 262 and the left and right steel plates 261 and 262. It is convenient to bolt the connection between the steel plate 262 and the stiffened steel connector 30 and bolt connection between the steel plate 261 and the tubular connecting material 27.

The vertical surface 302 of the saber reinforcement connector 30 may be connected to the steel plate 262, and as described above, the vertical surface 302 and the steel plate 262 may be formed of a single member. Since the stiffener 3 is inclined to the steel pipe support 1, the sloping surface 301 of the stiffener connector 30 may be in close contact with the stiffener connector 30 and the vertical surface 201 The ramp is formed.

On the other hand, the lateral pressure transmitted from the earth wall to the sash (2) as described above through the sash reinforcement connector (30) is transmitted to the side connector (20) of the steel pipe support (1) through the sash reinforcement (3). Since the axis of lateral pressure is inclined with respect to the longitudinal axis of the steel pipe brace (1), as shown in Fig. 6, the left and right stiffeners (3) and their stiffener connector (30) are connected in the direction of the arrow in Fig. 6 Connected to the device 100, the steel pipe support beam 1 and the joint device 100 should be constructed symmetrically to each other so that the steel pipe support beam 1 may not be eccentric.

The steel pipe support beam 1 is called a support beam, but actually acts as a compression material (column) rather than acting as a horizontal member (beam, girder). Therefore, if eccentricity occurs, the stability of the member may be significantly damaged due to occurrence of buckling, etc. Can.

On the other hand, due to the lateral pressure transmitted through the stiffener 3, a sliding phenomenon may occur between the stiffener 3 and the steel pipe brace 1, in order to solve this, in the present invention, the vertical surface of the side connector 20 On the edge of the (201) form a protrusion protruding jaw 40 in a form protruding from the vertical surface 201 to a predetermined height. The pushing jaw 40 is a steel plate or "a" section steel (for example, a-90x90x10 or a-100x100x10) or a "c" section steel (for example, c-380x100x10.5x16) standing in a direction perpendicular to the vertical surface 201 It is formed of a back and beyond the push-off jaw 40, the sash reinforcement connector 30 may serve as a stopper that cannot be moved.

As shown in FIG. 5, the push-off jaw 40 is a shape protruding from one end of the side connector 20 at the opposite end of the band 2 of the fitting device 100.

In addition to the effect of preventing the sliding between the above-mentioned stiffener 3 and the steel pipe brace 1 when the above-described sliding brace 40 is installed, the position of the stiffener 3 is symmetrical with respect to the steel pipe brace 1 It is also advantageous in catching, because the anti-slip 40 can prevent the stiffener 3 from being pushed not only under load, but also during construction.

In addition, in order to more effectively prevent the jungle of the stiffener 3 to ultimately more effectively reduce the jungle of the steel pipe brace 1 more effectively, as shown in FIG. 9, between the strip 2 and the stiffener 3 A push-off jaw 41 may be installed on the connection structure 60 (the circled portion in FIG. 9).

As shown in FIG. 9, the connection structure 60 is a tubular connecting member 61 inserted into a stiffener 3, a cross-shaped reinforcing plate 63 connected to the tubular connecting material 61, and a cross-shaped reinforcing plate 63 ), a connecting jack 62, such as an air jack, and a connecting port 64 for connecting the connecting jack 62 to the band 2 (similar to a stiffener connecting port, one surface is formed as a vertical surface, the other surface is formed as an inclined surface) .

In the present invention, a connecting jack 62 such as an air jack is installed between the steel strip 2 and the steel pipe brace 1, or between the steel strip 2 and the stiffener 3, and in some cases, the steel pipe brace 1 It can also be installed between the steel pipe support beams (1'), which is to flexibly control gaps between members depending on the construction site. However, as can be seen in Figure 1, the connection jacks 62 are not all installed on the strip 2, and may be sufficient if installed on only one side of the strip 2, so in the present invention, the strip 2 ) And steel pipe brace (1), sash (2) and stiffened steel (3), steel pipe brace (1) and steel pipe brace (1'). It belongs to the scope of the invention.

The transverse pressure (in FIG. 9) is transmitted between the belt length 2 and the connecting structure 60 as described above, specifically, the thrust prevention jaw 41 installed between the band length 2 and the connection port 64. The part indicated by the arrow) serves to prevent the connection structure 60 from being pushed against the band 2 by the reaction force in the process of being transmitted to the stiffener 3 through the connection structure 60, resulting in With it, it is possible to prevent the saber steel 3 and the steel pipe strut beam 1 from being pushed.

The anti-tilt 40 and the anti-tilt 41 may be used together or only the anti-tilt 40 may be used.

FIG. 9(a) shows that the push-off jaw 40 is formed as a “c” section steel and (b) is formed as a “a” section steel.

On the other hand, as shown in Figure 7 in connecting the stiffener (3) and the steel pipe support (1) between the stiffener (3) and the stiffener connector (30) is a steel pipe without mediating a tubular connector (27) Flange connection between the end of the stiffener 3 and the stiffener connector 30, for example, a flat blade at right angles to the end of the stiffener 3 and the end of the stiffener connector 30, 70, 71 After attaching a hole in the wing (70, 71) and then through the hole, the stiffener connection port 30 and the stiffener (3) are bolted (73), and further into the wing (70, 71) After forming a separate rib 72 on the flange, the rib and the stiffener connection port 30 may be welded.

Hereinafter, a method of constructing a steel strip 2 by connecting the steel pipe support beams 1 and 1'and the saber steel material 3 using the joint device 100 according to the present invention will be described.

The steel pipe support beams (1, 1') are connected to the strip (2) using a tubular connecting member (61) and/or a jack (62) as shown in FIG. 1, etc., which can be used as shown in FIG. The connection between the reinforcing material (3) and the strip (2) is similar. In addition, a joint device 100 such as FIG. 2 is installed on the steel pipe support beams 1 and 1'. At this time, as shown in (b) of FIG. 8, one end of the fitting device 100 is installed in the steel pipe support beam 1'adjacent to the band 2 and in the direction of the arrow of FIG. 8(b) at the other end of the fitting device 100. It is possible to connect a separate steel pipe support beam (1), or the joint device (100) itself is composed of a left-right or up-and-down separation type half-ring type connecting members (10, 11), so that the steel pipe support beam (1) as in Figure 8 (a) , 1') may be constructed by fitting the semi-ring-shaped connecting members 10 and 11 in the middle.

And after connecting one end of the stiffener 3 to the strip 2 as in FIG. 9 in a similar manner to the steel pipe braces 1 and 1', the other end of the stiffener 3 is connected as shown in FIG. It is connected to the side connector 20 of the device 100.

In addition, the tubular connecting member 61 may be used when the stiffener 3 is connected to the strip 2, but other methods such as flange bonding may be employed as in FIG. 7 as before.

The above construction method is merely exemplary, and the construction order may vary depending on the actual site situation, the span of the steel pipe brace and the stiffener, and the position of the central pile in the span of the steel pipe brace, and the important order of the present invention Construction of a stiffened steel (bracket) on a strip-steel pipe support structure using a joint device 100 is that it belongs to the scope of the present invention.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and has ordinary knowledge in the technical field to which the present invention pertains without departing from the spirit of the present invention. Of course, various changes and modifications can be made by those who have it. In addition, the accompanying drawings are not illustrated according to scale, but partially enlarged and reduced to illustrate the technical idea of the present invention.

1, 1': Steel pipe support
2: band
3: Sabo steel, brace steel pipe, bracket
10, 11: Semi-circular connecting member (ring plate when 10 and 11 are combined)
12: Bolt connection
13: Rib attached to the connecting plate of the bolt connection
14: bolts fastened to the connecting plate of the bolt connection
20: side connector
25: side connection fastener
26: hollow formed in the side connector
27: tubular connecting material
30: Sabo steel connector
40: jungle bump
100: steel pipe support joint
120: connecting plate of the bolt connection
201: vertical surface of the side connector (a fastening hole is formed)
260: reinforcement
262: cross-shaped reinforcement hardware
301: Sloped steel slope
302: vertical surface of stiffener

Claims (15)

delete delete delete delete delete delete delete delete delete delete In the underground construction site, the strip length is installed horizontally on the earth wall surface, the steel pipe struts are installed perpendicularly to the strip between the left and right strips, and the steel pipes are symmetrically left and right between the strips and the steel pipe struts. As a sash reinforcing material (formed from a steel pipe) disposed in, and the steel pipe support beams and the joint for connecting the sabo reinforcing material to the underground mudguard-steel pipe brace-steel pipe stiffener structure,
The joint device,
It is made of an integral member in which two left and right semi-circular connecting members are connected to extend along the longitudinal direction of the steel pipe support beam to a predetermined length so as to cover the entire circumference of the steel tube support beam, but the upper and lower parts are detachably open. With a mold plate,
It includes a side connector which is respectively connected to the outer circumferential surface of each of the two semi-ring type connecting member to directly or indirectly connect the stiffeners,
The side connector is generally shaped like a rectangular parallelepiped, but is formed in a shape cut along the curved surface of the steel pipe brace at one side that contacts the steel pipe brace, so that the edge of the side connector is the semi-circular connection at one side connected to the steel pipe brace. It extends along the circumference of the member, the side connector is formed to extend in the longitudinal direction of the steel pipe support beam from the rear end of the fitting device to the belt length, and may be formed over the entire length direction of the steel pipe support beam of the fitting device. ,
On the vertical surface to which the stiffeners are directly or indirectly connected at the side connection port, a first thrust preventing protrusion protruding at a predetermined height in a direction orthogonal to the vertical surface is formed,
The first thrust preventing jaw is formed to function as a stopper for setting a limit in which the stiffener connected to the steel pipe brace can move in the longitudinal direction of the steel pipe brace,
The first thrust preventing jaw is also formed at the end edge of the opposite side of the girders at the side connector to prevent the lateral pressure transmitted from the girders through the stiffeners against the steel pipe braces.
A bolt connection portion is formed on the detachably open upper portion of the annular plate to allow the two semi-circular connecting members forming the annular plate to be in close contact with each other,
The bolt connecting portion is formed by extending two connecting plates protruding upward from the circumferential surface of the semi-circular connecting member along the longitudinal direction of the steel pipe brace, and a plurality of ribs dividing the connecting plate at predetermined intervals It is formed to extend downward along the curved surface of the semi-ring type connecting member, and one or more bolts are fastened between the ribs and the ribs, and by tightening the bolts, the connecting plate is in close contact with the steel pipe buttress and the semi-ring type connection The member is formed to be securely fixed to the steel pipe support beam,
A bolt connection portion is formed on the lower portion of the annular plate to allow the two semi-circular connecting members forming the annular plate to be in close contact with each other,
A plurality of fastening holes are formed on the vertical surface of the side connector,
The side connector has a hollow formed therein, and is configured to be bolted to the fastening hole through the hollow,
It includes a sash reinforcement connector for connecting the stiffener and the side connector,
The stiffener connection port is configured to have a shape of a trapezoidal cross-section, wherein a surface contacting the vertical surface of the side connector is formed as an inclined surface and an opposite surface to which the stiffener is directly or indirectly connected is formed as a vertical surface,
The stiffener is connected to the first tubular connecting material,
Between the first tubular connecting material and the vertical surface of the stiffener connection port, a reinforcing port including a cross-shaped reinforcing hardware is connected,
The first sliding preventing jaw is formed of a steel plate standing in a direction orthogonal to the vertical surface of the side connector, or "a" section steel, or "c" section steel,
A connection structure is formed between the strip and the stiffener,
The connection structure includes a second tubular connecting material inserted into the stiffener, a cross-shaped reinforcing plate connected to the second tubular connecting material, a connecting jack such as an air jack connected to the cross-shaped reinforcing plate, and a connecting port connecting the connecting jack to the band length Including,
A second thrust preventing jaw is provided between the connecting structure of the connecting structure and the belt length to prevent the stiffening material from being pushed against the band length by the lateral pressure transmitted to the stiffener length between the stiffener and the belt length. Steel strip for construction of underground mudguards, characterized in that it is installed in-steel pipe support beam-steel pipe stiffener structure. delete delete delete As a method of constructing a strip-steel pipe support-steel pipe support-steel pipe stiffener for underground mudguard construction using a steel strip brace-steel pipe support beam-steel pipe stiffener structure according to claim 11,
Step of installing a steel pipe support beam in the belt,
Installing a joint device to the steel pipe support,
It comprises a step of connecting and installing a sabo steel (formed of a steel pipe), which is disposed between the steel strip and the steel pipe support beam symmetrically to the left and right of the steel pipe support beam, to the joint, thereby installing a steel strip-steel pipe support beam for underground mud construction. -Construction method of steel pipe sabo steel.

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