KR100570261B1 - Temporary bracket for construction of steel bridge and the installation method using the same - Google Patents

Abstract

Temporary bracket for steel bridge and construction method of the present invention completes the temporary frame in the lower part of the steel bridge girders by simple assembly and installation in the construction of steel bridges difficult to work in the air, and install the copper bar, drop prevention ball, workbench, etc. above the temporary frame This makes slab casting of steel bridge and maintenance of bridge easy, and installation and assembly work of temporary bracket is done on the upper part of steel bridge, so it is unnecessary to construct separate installation for lower work of steel bridge girder, thus reducing material cost and labor cost. The present invention aims to provide a steel bridge temporary bracket and a construction method thereof by which a worker's safety is promoted by eliminating the risk due to height work, and for this purpose, a steel bridge temporary bracket and a construction method thereof are provided at a lower portion thereof. (Iii) a vertical member having an L-shaped locking body that is caught on the jaw of the girder, Support member of the pair comprising a horizontal member that is coupled to the sujikjae forms a right angle; A connecting member slidably inserted into the horizontal member of the pair of supporting members; Guide frame formed with a moving hole having a predetermined length in the longitudinal direction; And a moving device including a fixed body which is moved along the moving hole of the guide frame, a fixing rod that penetrates the coupling hole of the support material and the fastening hole of the connecting material together, and a clasp formed at an upper end of the fixed body. Provide temporary construction bracket for steel bridge and its construction method.

Description

Temporary bracket for construction of steel bridge and the installation method using the same}             

Figure 1a is a perspective view showing an embodiment of the steel bridge temporary bracket of the present invention.

Figure 1b is a side view showing another embodiment of the steel bridge temporary bracket of the present invention.

2 is a plan view showing a coupling hole state of the support material of the steel bridge temporary bracket of the present invention.

Figure 3 is a perspective view showing a damage preventing pad used in the steel construction temporary bracket of the present invention.

Figure 4a is a side view showing a part of the construction of the temporary construction bracket for steel bridge of the present invention.

Figure 4b is a side view showing a part of another construction example of the temporary construction bracket for steel bridge of the present invention (at the time of maintenance).

5 is a perspective view showing a construction example of a steel bridge temporary bracket of the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 100a: Temporary bracket for steel bridge 110: support material

111: vertical material 111a: through hole (vertical material)

111b: Hatch body (vertical material) 111c: Damage prevention pad (vertical material)

112: horizontal member 112a: coupling hole (horizontal member)

120: connection member 121: fastening hole (connection material)

130: guide frame 131: moving ball (induction frame)

140: mobile device 141: fixed body (mobile device)

141a: fixing pin (fixed body) 142: fixing rod (moving device)

143: clasp (moving device) 150: vertical connector

151: through hole (vertical connecting member)

Temporary bracket for steel bridge and construction method of the present invention is to install the temporary bracket on the lower end of the steel girder by simple assembly and installation in steel bridge construction, the installation work of the temporary bracket is made at the top of the steel girder It is related to a construction bridge for steel bridges and a construction method thereof, which can eliminate the worker's risks.

In general, steel bridges, which are bridges constructed of steel beams or steel plates, are used to form concrete slabs.

Such slab formation requires the installation of a copper bar first before concrete placement. The existing construction method, which has been used up to now, installs a bridge angle to support the girders between the already constructed piers and uses system support from the bottom of the piers. After installing the copper barriers and installing the formwork for slab concrete on the upper part, the wooden barrier method for installing the wooden barriers at the top of the piers, or the mobile scaffolding method for constructing one span at a time using mechanized copper balls and formwork. Etc. can be mentioned.

However, the Dongbari method of installing Dongbari from the lower part of the bridge has the disadvantage of requiring a lot of materials and manpower when the height of the construction height is high, and the geometry space must be secured as a temporary space.In addition to the installation of Dongbari and formwork, In order to secure space, the scaffolding work must be preceded by connecting the steel wires from the stud bolts protruding from the upper part of the girder and then lowering it to the side to tie up the scaffolding scaffolding and to install temporary materials such as work scaffolding or safety nets.

On the other hand, the construction method for installing wood clubs consists of cutting the corners and installing the workbench and slab clubs between the girders and girders at required intervals and then assembling the slab formwork with plywood, etc. While it is inexpensive, the rigidity of the member itself is not good, so it must be installed at narrow intervals, and as the installation and dismantling work is repeated, it is easily broken, which lowers the capacity ratio and consequently increases the construction cost.

In addition, in the mobile scaffolding method, it is not necessary to install a copper bar from the ground, so it can be installed without being influenced by the conditions of the mold space or the ground, but the installation work is complicated and the input of large equipment is essential.

Temporary bracket for steel bridge and construction method of the present invention devised to solve the above problems are hypothesized at the bottom of the steel girder only by simple assembly and installation in the construction of steel bridge difficult to work while solving the problems of the conventional construction method The purpose of the present invention is to provide a construction bracket for steel bridges and a method of constructing the slab concrete that can be easily installed and the maintenance of the bridge by installing a copper bar, a drop prevention ball, and a work platform on the temporary frame.

In addition, the temporary construction bracket for the steel bridge and the construction method of the present invention is because the installation of the construction bracket is made in the upper part of the steel bridge is not necessary to install a separate installation for the work in the lower part of the steel girders and the risk of the operation is excluded, Another purpose is to provide a temporary construction bracket for steel bridges and a construction method thereof for safety.

Steel bridge construction bracket and construction method of the present invention to achieve the above object is a vertical member having a through-hole is formed at the upper end and the L-shaped locking body is formed on the jaw of the steel girder at the lower end, and the vertical member and A pipe member coupled to form a right angle, a pair of support members including a horizontal member formed in the coupling hole of the long hole type on the upper and lower surfaces opposite the locking body of the vertical member; A pipe member slidably inserted into the horizontal member of the pair of support members, the connecting member having a plurality of fastening holes having a predetermined interval penetrating up and down; An induction frame having an elongated hole having a predetermined length in a longitudinal direction as an inclined material having one end fixed to an upper portion of the vertical member of the pair of support members and the other end fixed to a horizontal member; And a fixing body disposed to surround the induction frame, and having a fixing hole having a fixing pin inserted therethrough through the moving hole of the induction frame so as to move along the moving hole of the induction frame. And a moving device including a fixing rod that penetrates the coupling hole of the support member and the coupling hole of the connecting member together, and a latch formed at an outer side of the upper end of the fixing member and fixed at both ends thereof by a fixing pin of the fixing member. It is related to the temporary construction bracket.

Steel bridge construction bracket and construction method of the present invention as described above to complete the construction frame in the lower part of the steel girders only by simple assembly and installation in the construction of steel bridges difficult to work in the air, the construction of the ball over the construction frame, falling ball prevention ball, And installation of scaffolding for easy slab concrete pouring and maintenance of bridges, and installation of temporary brackets is made on the upper part of the steel bridge. Since the risk is eliminated and the safety of the worker is achieved, the above technical problem of the present invention can be achieved by such a configuration.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. However, this is intended to enable those skilled in the art to more clearly understand and easily practice the present invention, and are not intended to limit the protection scope of the present invention thereto. Still other technical features and advantages will be more clearly understood by those skilled in the art through the following description of the preferred embodiment according to the present invention.

Figure 1a is a perspective view showing one embodiment of the steel bridge temporary bracket 100 of the present invention, Figure 1b is a side view showing another embodiment of the steel bridge temporary bracket 100a of the present invention, Figure 2 3 is a plan view illustrating a coupling hole 112a of the support member 110 of the steel bridge temporary brackets 100 and 100a of the present invention, and FIG. 3 is a damage preventing pad used in the steel bridge temporary bracket 100 of the present invention. 111c) is a perspective view, Figure 4a is a side view showing a part of the construction of the steel bridge temporary bracket 100 of the present invention, Figure 4b is a side view showing a portion of another construction of the steel bridge temporary bracket of the present invention. (At the time of maintenance), FIG. 5: is a perspective view which shows the construction example of the steel bridge temporary bracket 100 of this invention.

The pair of supporting members 110 of the steel bridge temporary brackets 100 and 100a of the present invention is a member that allows the steel bridge temporary brackets 100 and 100a to be mounted under the steel girder 1, and FIG. 1A. And a vertical member 111 having a through hole 111a formed at an upper end thereof and an L-shaped locking member 111b formed at a lower end of the steel girder 1 as shown in FIG. 1B. And a horizontal member 112 formed as a pipe member perpendicular to the vertical member 111 and having a long hole-shaped coupling hole 112a formed at an upper side and a lower side opposite to the locking member 111b of the vertical member 111.

At this time, the mounting rod having a hook portion at one end is fitted into the through hole 111a of the vertical member 111, and the mounting rod fitted to the through hole 111a is lifted upward, thereby being installed in the steel girder 1. Temporary brackets for steel bridges 100 and 100a of the present invention are in close contact with the steel girders 1.

In addition, the L-shaped locking member 111b formed at the lower end of the vertical member 111 is caught by the jaws of the steel girder 1 as shown in FIGS. 4A and 4B, and ultimately, the steel bridge temporary bracket of the present invention ( Enables the bottom mounting of the steel girders 1 of 100 and 100a. In this case, as illustrated in FIG. 1B, the locking body 111b may further include a damage preventing pad 111c on a surface in contact with the jaw of the steel girder 1. As shown in FIG. 3, the damage prevention pad 111c is used to prevent friction between the contact surfaces of the temporary brackets 100 and 100a made of steel mounted on the jaws of the steel girders 1 and the jaws of the steel girders 1. Reduction prevents damage to the steel girders 1 and the temporary steel brackets 100 and 100a of the present invention. In addition, the damage prevention pad 111c may be made of the same material as rubber having a predetermined elasticity, and in addition to reducing the frictional force between the steel girder 1 and the steel bridge temporary brackets 100 and 100a. Anything is OK.

In addition, the horizontal member 112 coupled to form a right angle with the vertical member 111 in the pair of support member 110 is a moving device that is described later on the upper and lower surfaces of the vertical member 111 opposite the locking member 111b. A long hole-shaped coupling hole 112a into which the fixed bar 142 of 140 is inserted is formed. At this time, the forming length of the coupling hole (112a) is a moving device in which the degree of movement is determined in consideration of the interval of the steel girders (1) to be installed when installing the temporary installation, and considering the width of the steel girders (1) during maintenance of the bridge It is determined by the amount of movement of 140. In addition, the coupling hole (112a) is a fixed rod of the moving device 140 by varying the shape of the coupling hole (a) and the coupling hole (b) of the lower surface of the horizontal member 112, as shown in FIG. 142) It may be easy to insert, and in addition to the form shown in the drawings it can be manufactured in other forms of coupling holes that can facilitate the insertion of the fixing rod 142 of the moving device 140. In addition, the horizontal member 112 is made of a pipe member that can be inserted into the connecting member 120 to be described later, in which case the pipe shape of the horizontal member 112 and the connecting member 120 is any shape suitable for construction such as square pipe or circular pipe Anyway.

In the steel bridge temporary brackets 100 and 100a of the present invention, the connecting member 120 is slidably inserted into the horizontal member 112 of the pair of supporting members 110 to be mounted under the steel girders 1. It is a member that connects between the pair of support members 110.

Later, when installing the steel bridge temporary brackets 100, 100a of the present invention, the connecting member 120 is lifted or shaken by an installation rod, and the moving device 140 to be described later with its own weight moves downward. The pair of support members 110 are moved left and right, and ultimately, the steel bridge temporary brackets 100 and 100a of the present invention are in close contact with the steel girders 1.

In addition, the connection member 120 has fastening holes 121 penetrating up and down in which the fixing rod 142 of the moving device 140 is inserted at a predetermined interval, and the interval between the fastening holes 121 is as described above. It is drilled in consideration of the spacing of the steel girders 1 and the width of the steel girders 1 to be constructed, such as the horizontal member 112 coupling hole 112a of the pair of support members 110.

In addition, the connecting member 120 is a member inserted into the horizontal member 112 of the support member 110 as described above has a shape that can be inserted into the horizontal member 112.

Guide frame 130 of the steel bridge temporary bracket 100, 100a of the present invention is a member that enables the vertical movement of the moving device 140 to be described later, the vertical member 111 of the pair of support member 110 An inclined member having one end fixed to the upper end and the other end fixed to the horizontal member is formed with a long hole-type moving hole 131 having a predetermined length in the longitudinal direction. At this time, the length of the moving hole 131 of the guide frame 130 is a steel girder that is constructed such as the angle of the moving hole 131 and the horizontal member 112 coupling hole 112a of the pair of support members 110 described above ( It is determined by the amount of movement of the moving device 140 in which the degree of movement is determined in consideration of the interval of 1) and the width of the steel girders 1.

Moving device 140 of the steel bridge temporary bracket 100, 100a of the present invention is moved up and down while moving the pair of support member 110 to the left and right steel bridge temporary bracket 100, 100a of the present invention As a member to be in close contact with the lower portion of the steel girder 1, is arranged to surround the guide frame 130, the guide frame (top) to move along the moving hole 131 of the guide frame 130 Fixed body 141 is formed with a fixing hole is inserted into the fixing pin 141a penetrating the moving hole 131 of 130, the lower portion of the fixing body 141 is coupled to the support member 110 A fixing rod 142 penetrating together the fastening hole 121 of the ball 112a and the connecting member 120, and the upper end of the fixing body 141, both ends of the fixing pin of the fixing body 141 A clasp 143 fixed to 141a is included.

In addition, since the above-described moving device 140 has a predetermined weight, a pair of supports are inserted into the through-holes 111a of the pair of support members 110 at a later construction and the pair of support rods are pulled upward. When the ash 110 is moved left and right toward the steel girder 1, the moving device 140 naturally moves downward along the moving hole 131 of the guide frame 130. In addition, the horizontal member 112 of the pair of support members 110 into which the fixing rod 142 of the mobile apparatus 140 is inserted together with the mobile apparatus 140 moved downward as described above, The pair of support members 110 are moved closer to the steel girders 1 as they are moved left and right according to the movement, and ultimately, the steel bridge temporary brackets 100 and 100a of the present invention are disposed below the steel girders 1. More and more tightly attached.

Later, when dismantling the steel bridge temporary bracket 100, 100a of the present invention by inserting the installation rod into the latch 143 of the mobile device 140, the mobile device 140 is a moving hole of the guide frame 130 ( 131 moves upward, and when the moving device 140 lifts upward, the pair of support members 110 are separated from the steel girders 1. Therefore, the installation and dismantling of the steel bridge temporary brackets 100 and 100a of the present invention by the movement of the moving device 140 controlled by the installation rod as described above is made easily.

As shown in FIGS. 1A and 1B, the steel bridge temporary brackets 100 and 100a of the present invention are disposed on an extension line of the vertical member 111 of the pair of support members 110 to be disposed below the horizontal member 112. It is formed, and further comprises a vertical connection member 150 of a predetermined length is formed with a through hole 151 through which a pipe member for connecting between the pair of support members 110 on the side. The vertical connection member 150 is to solve the construction difficulties due to the cross beam formed between the girder (1) when installing the temporary work, such as working scaffold on the bridge, that is, the difficulty of installing the scaffolding under the girder (1) As a member for the above, it is possible to overcome the difficulties caused by the cross beam by installing a working scaffold or the like on top of the pipe member inserted into the through hole of the vertical connecting member 150 to connect the pair of support members 110. In addition, as described above, by installing the steel bridge temporary brackets 100 and 100a to which the vertical connection member 150 is connected, the temporary bridge for steel bridges 100, 100a after completion of construction as well as the installation of work scaffolding under the steel girder 1 is completed. ) Dismantling work is also easy.

In addition, the vertical connecting member 150 allows the steel bridge temporary brackets 100 and 100a of the present invention to be installed below the steel girder 1 without using an installation rod in the bridge covered with the upper plate. That is, in the bridge covered with the top plate is blocked because the top plate is blocked, as in the bridge is not covered with the steel girders (1) using the mounting rods in the steel bridge construction brackets 100, 100a of the present invention can not be installed. Accordingly, in the bridge covered with the upper plate, the vertical connecting member 150 is lifted upward from the upper part of the pier located below the steel girder 1 so that the locking member 111b of the pair of supporting members 110 is the steel girder 1. By hanging on the jaw), it is possible to install the steel girders (1) lower portion of the steel bridge temporary brackets 100, 100a of the present invention.

Installation of the vertical connecting member 150 in the steel bridge temporary brackets 100, 100a of the present invention may be selected by construction depending on the construction site situation.

The installation rods used in the steel bridge temporary brackets 100 and 100a of the present invention are members formed of hooks or reinforcing bars having a hook portion formed at one end thereof, and handles formed at the other end thereof, as described above. Inserted into the vertical member 111 through hole 111a of the pair of support members 110 to adjust the pair of support members 110 to be in close contact with the steel girder 1 at the upper part of the steel girder 1 or to move the moving device 140. The steel girders (1, 143) of the steel girder (100, 100a) of the steel girders (1, 100a) to be installed in the lower part of the steel girders (1), and after the completion of use, Hanging on the latch 143 of the 140 to lift the moving device 140 to be separated from the steel girder (1) to enable disassembly, by lifting or shaking the connecting member 120, the moving device having its own weight (140) ) Is moved further down and the pair of support members 110 Right is moved to the hypothesis are used to bracket (100, 100a) for the steel bridge of the present invention further in close contact with the lower portion of the steel girder (1).

The construction method of the steel bridge temporary brackets 100 and 100a of the present invention is to assemble the steel bridge temporary brackets 100 and 100a when the bridge pier is completed and the steel girders 1 are installed on the top of the bridge. step; The assembled steel bridge temporary brackets 100 and 100a are obliquely lowered to the lower end of the steel girders 1 so that the jaws of the steel girders 1 are caught by the catching member 111b of the pair of support members 110. Positioning on the girder 1; And closely contacting the steel bridge temporary brackets 100 and 100a to the lower ends of the steel girders 1.

Hereinafter, a construction example of the construction method of the steel bridge temporary bracket 100 of the present invention with reference to Figures 4a and 5 as follows. In this case, the steel bridge temporary bracket 100 will be described based on the vertical connection member 150 is installed.

When the pier construction, which is the lower structure in the steel bridge, is completed, the girder (1) is installed at a predetermined interval on the upper part of the pier, and construction work for pouring the concrete slab, which is the upper structure, begins.

At this time, the girders (1) can be used, such as steel box type, steel plate, H-type steel or I-shaped steel girders, steel box-type or steel plate girders can be applied as it is made to form a jaw and H-shaped steel or I In the section steel, the lower flange replaces the jaw.

The connecting member 120 of the steel bridge temporary bracket 100 of the present invention is inserted into the horizontal member 112 of the pair of support members 110.

Thereafter, the fixing rod 142 of the moving device 140 is inserted into a predetermined position where the coupling hole 121 of the connection member 120 and the coupling hole 112a of the horizontal member 112 of the support member 110 meet. After that, the fixing pin 141a is inserted into and connected to and fastened to a predetermined position where the fixing hole of the fixing body 141 of the mobile device 140 and the moving hole 131 of the guide frame 130 meet. At this time, the fixing rod 142 of the moving device 140 is determined in the insertion position of the coupling hole (112a) of the horizontal member 112 in consideration of the appropriate interval between the girder (1), the moving device 140 is guide frame (130) It should be located in the middle of the moving hole 131 can be moved up and down smoothly installation and dismantling.

Accordingly, as shown in FIG. 1A, the fixing pin 141a of the fixing body 141 is positioned at the upper end of the moving hole 131 of the guide frame 130 in the state in which the moving device 140 is lifted up. As the 140 is moved down, it is moved along the moving hole 131 of the guide frame 130 to be located at the lower end of the moving hole 131 of the guide frame 130, thereby ultimately the moving device 140 While moving up and down, the pair of support members 110 are moved left and right. In addition, the movement amount of the moving device 140 is determined according to the length of the moving hole 131 of the guide frame 130, and by the movement amount of the coupling hole 112a of the horizontal member 112 of the support member 110 The length is also designed, the spacing of the fastening holes 121 of the connecting member 120 is also adjusted.

Then, the installation rod is inserted into the clasp 143 of the moving device 140, and the steel bridge temporary bracket 100 assembled as described above is obliquely to the lower part of the girder 1 while watching the distance between the two steel girders 1. After the lowering, as shown in FIG. 4A, the temporary steel bracket 100 for the steel bridge is positioned so that the jaws of the steel girders 1 are caught by the locking bodies 111b of the pair of support members 110.

After placing the steel bridge temporary bracket 100 in the lower portion of the steel girder 1, the mounting rods in the through holes 111a of the pair of support members 110 in the upper portion of the steel girder 1 and pulled upwards Or by lifting or shaking the connecting member 120, the mobile device 140 having its own weight is further moved downward to move the pair of support members 110 to the left and right to move the temporary steel bracket 100 for the steel bridge ) Is brought into close contact with the lower part of the steel girder (1). At this time, when the load is loaded to the upper portion of the connecting member 120 of the steel bridge temporary bracket 100 is assembled with the above or the vibration occurs due to the passage of the worker, the moving device 140 having the own weight moves further down. In addition, the pair of support members 110 are moved to the left and right, and ultimately the steel bridge temporary bracket 100 is more firmly in close contact with the lower portion of the steel girder (1).

Then, the steel bridge temporary bracket 100 of the present invention installed as described above is installed in the steel girders 1 to have a predetermined interval, between the steel bridge temporary bracket 100 and the steel bridge temporary bracket 100 Install the fall prevention hole by blocking the space between the steel girders (1) with a working scaffold or plywood.

Thereafter, the pipe member is horizontally inserted into the vertical connection member 150 of the steel bridge temporary bracket 100 at the upper portion of the working scaffold, and the steel platform hypothesis is placed on the lower portion of the steel girder 1 by placing the working scaffold on the upper pipe member. Facilitate installation and disassembly of bracket 100. At this time, the vertical connector 150 is to facilitate the diagnosis or maintenance of the existing bridge formed by the top plate is formed to solve the construction difficulties due to the cross beam of the installation girder (1), the installation of the vertical connector 150 It may be selected depending on the construction situation.

The construction method of the steel bridge temporary bracket (100, 100a) of the present invention comprises the steps of assembling the steel bridge temporary bracket (100, 100a) during maintenance of the bridge covered with the upper plate; And vertically lifting the vertical connecting member 150 of the assembled steel bridge temporary brackets 100 and 100a from the upper portion of the pier upwards so that the jaws of the steel girders 1 are connected to the catching member 111b of the pair of supporting members 110. It includes; and the step of placing and contacting the steel bridge temporary bracket 100, 100a to the steel girders (1).

Hereinafter, another construction example (at the time of maintenance) of the construction method of the steel bridge temporary bracket 100 of the present invention will be described with reference to FIG. 4B. In this case, the steel bridge temporary bracket 100 will be described based on the vertical connection member 150 is installed.

The maintenance work on the steel bridge is mainly done by painting works.

When installing the steel bridge temporary bracket 100 of the present invention to carry out the painting work of the steel bridge, the construction of the above-described construction was installed the steel bridge temporary bracket 100 in the upper part of the steel girder 1 because the top plate of the bridge is covered Unlike the example, the steel bridge temporary bracket 100 is installed at the upper part of the piers.

Inserting the connecting member 120 of the steel bridge temporary bracket 100 of the present invention in the place of easy assembly work to the horizontal member 112 of the pair of support members 110.

After the fixing of the moving device 140 at a predetermined position where the fastening hole 121 of the connection member 120 and the horizontal member 112 coupling hole 112a of the support member 110 meet as described above. After inserting the rod 142, the fixed pin 141a is inserted into a predetermined position where the fixed hole of the fixing body 141 of the mobile device 140 and the moving hole 131 of the guide frame 130 are connected to each other. And fasten. At this time, the fixing rod 142 of the moving device 140 is determined in consideration of the width of the girder insertion position. Because the steel bridge temporary bracket 100 of the present invention during the maintenance of the bridge should be painted on the side and the bottom of the steel girders (1) as shown in Figure 4b the work scaffold in the lower part of the steel girders (1) Should be installed. Therefore, the steel bridge temporary bracket 100 of the present invention is different from the above-described construction example in which the steel bridge temporary bracket 100 of the present invention is installed while connecting a plurality of girders 1. As shown in 4b, the steel bridge temporary bracket 100 of the present invention is installed on both left and right sides of a single steel girder 1 so that a work scaffold can be installed at the bottom of the girder 1, thereby In consideration of the width, the insertion position of the fixing rod 142 of the moving device 140 is determined.

In addition, the insertion position of the fixing rod 142 of the mobile device 140 and the fastening hole 121 of the connecting member 120 is a fixed hole 141 of the mobile device 140 and the guide frame 130 When the fixing pin 141a is inserted into the moving hole 131, the fixing pin 141a is fastened up and down along the moving hole 131 of the induction frame 130. Accordingly, as shown in FIG. 1A, the fixing pin 141a of the fixing body 141 is positioned at the upper end of the moving hole 131 of the guide frame 130 in the state in which the moving device 140 is lifted up. As the 140 is moved down, it is moved along the moving hole 131 of the guide frame 130 to be located at the lower end of the moving hole 131 of the guide frame 130, thereby ultimately the moving device 140 While moving up and down, the pair of support members 110 are moved left and right. In addition, the movement amount of the moving device 140 is determined according to the angle and length of the movement hole 131 of the guide frame 130, and the coupling hole 112a of the horizontal member 112 of the support member 110 by the movement amount ) Length is also designed, the spacing of the fastening holes 121 of the connecting member 120 is also adjusted.

Then, the vertical connection member 150 of the steel bridge temporary bracket 100 assembled as described above in the upper portion of the piers upwards, as shown in Figure 4b the jaw of the steel girders 1 pair of support member 110 The steel bridge temporary bracket 100 of the present invention to be caught by the engaging body 111b of the present invention in close contact with the left and right sides of the girder 1 is installed.

At this time, as will be described later, the pipe member is inserted into the vertical connection member 150 of the steel bridge temporary bracket 100, and the work scaffold is installed on the upper portion of the work scaffold to carry a load or vibration due to the passage of the operator. When this occurs, the moving device 140 having its own weight moves further down, and the pair of support members 110 move left and right, and ultimately, the steel bridge temporary bracket 100 The lower part of the steel girder 1 is more firmly in close contact.

In addition, when dismantling the temporary steel bracket 100 for the steel bridge of the present invention, when the fixed rod 142 of the moving device 140 is pushed up, the moving device 140 moves the moving hole 131 of the guide frame 130. Displacement of the steel bridge temporary bracket 100 by placing the pair of support members 110 are moved upwards and leftwards so that the pair of support members 110 are moved away from the steel girders 1. To facilitate.

After inserting the pipe member placed horizontally in the vertical connection member 150 of the steel bridge temporary bracket 100 is installed as described above to connect the left and right sides of the girder 1, by installing a working step on the girder (1) Easy to paint the side and bottom.

In addition, when the installation is in the progress direction, when dismantling in the opposite direction to the vertically perpendicular to the pipe member fitted to the pipe member 150 to move the moving scaffold to facilitate the installation or disassembly work on the scaffold.

Temporary bracket for steel bridge of the present invention by completing the construction frame in the lower part of the steel bridge girders by simple assembly and installation in the construction of the steel bridge difficult to work in the air, slab concrete of the steel bridge It is effective in providing temporary brackets for steel bridges to simplify the pouring and maintenance of bridges.

In addition, the installation of the temporary steel bracket for the steel bridge of the present invention, unlike the conventional techniques that were worked on the bottom of the girder of the steel bridge for the construction of the copper bar, all the work is made at the top of the steel bridge, so the installation of a separate installation for the lower work of the steel bridge girder is unnecessary In addition, the material cost is reduced, and there is another effect to provide a steel bridge construction bracket that promotes the safety of workers by eliminating the risk due to height work.

Claims (6)

A through-hole is formed at the upper end and a vertical member formed with an L-shaped locking member caught at the jaw of the steel girder at the lower end thereof, and a pipe member coupled at right angles to the vertical member. A pair of supporting members including a horizontal member having a long coupling hole formed on a lower surface thereof; A pipe member slidably inserted into the horizontal member of the pair of support members, the connecting member having a plurality of fastening holes having a predetermined interval penetrating up and down; An induction frame having an elongated hole having a predetermined length in a longitudinal direction as an inclined material having one end fixed to an upper portion of the vertical member of the pair of support members and the other end fixed to a horizontal member; And It is disposed to surround the guide frame, the fixed body is formed with a fixing hole is inserted into the fixing pin penetrating the moving hole of the guide frame at the top to be moved along the moving hole of the guide frame, extending in the lower portion of the fixed body A moving device including a fixing rod that penetrates the coupling hole of the support member and the coupling hole of the connecting member together, and a latch formed at an outer side of the upper end of the fixing member and fixed at both ends thereof by fixing pins of the fixing member; Temporary bracket for steel bridge comprising a. The steel bristle bracket of claim 1, wherein the locking body formed on the vertical member of the pair of supporting members is further provided with a damage preventing pad on a surface of the pair of support members that is in contact with the jaw of the steel girder. The method of claim 1, wherein the length of the predetermined length that is disposed on the vertical member extension line of the pair of support member is installed at the lower end of the horizontal member, the through hole through which the pipe member connecting between the pair of support member is formed on the side Temporary bracket for steel bridge further comprising a vertical connecting member. Once the bridge pier is complete and a steel girder is installed on the top of the bridge, Assembling the steel bridge temporary bracket of claim 1; Placing the assembled steel bridge temporary bracket at an angle from the upper side of the steel girder to the lower side of the steel girder and placing the jaw of the steel girder on the steel girders so that the jaws of the pair of support members are caught by the steel girders; And Contacting the steel bridge temporary bracket to a lower end of the steel girder; Construction method of the temporary construction bracket for steel bridge comprising a. In the maintenance of bridges with covered tops, Assembling the steel bridge temporary bracket of claim 3; And Lifting the vertical connecting member of the steel bridge temporary bracket from the upper portion of the pier upward so that the jaws of the steel girder are caught by a catching body of the pair of support members to position and close the steel bridge temporary bracket to the steel girder; Construction method of the temporary construction bracket for steel bridge comprising a. The method of claim 4, further comprising installing a vertical connecting member of claim 3 on the steel bridge temporary bracket.

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