KR100975841B1 - Tower crane fixing device and method thereof - Google Patents

Abstract

PURPOSE: A fixing device of a tower crane for a bridge and a construction method thereof are provided to steadily support a tower crane using a steel bar. CONSTITUTION: A fixing device of a tower crane for a bridge comprises a main body(10), a steel bar assembly, a fixing member(40), and a plate assembly. The main body comprises a plurality of fixing plates(11) and a plurality of supporting plates(13). The fixing plate is detachably attached to the upper side of the bridge post. The supporting plate supports a tower crane and is located on the top of the fixing plate. The steel bar assembly comprises a sheath pipe and a plurality of steel bars(23). The steel bar is inserted into the sheath pipe and is combined in a plurality of fixing plates.

Description

Tower crane fixing device and method

The present invention relates to a tower crane fixing device for bridges. More specifically, it is possible to reduce the size of the conventional tower crane fixing device for the bridge, thereby securing more work area of the head of the pier, and the tower crane for bridge construction that allows the tower crane fixing device to be more robust and balanced. It relates to a fixing device and a construction method thereof.

With the rapid development of construction technology and the progress of large-scale project civil works, the use of tower cranes is increasing in bridge construction sites.

Cable-building bridges of cable-stayed bridges and extra-dose bridges and the construction of wide bridges (35-39m) due to the increase in the number of cars due to the increase in traffic volume, hydro cranes and crawlers The work efficiency of the existing lifting equipment such as a crane has sharply decreased. Compared with the existing lifting equipment, the tower crane is a stationary crane, which is more stable and excellent in work efficiency.

On the other hand, the construction of the bridge at sea is generally used a large offshore crane (crane barge) when the top plate on the bridge after the construction of the bridge.

Since the large offshore crane ship is fixed to the ship, not the land, the installation stability of the mooring device to fix the ship to the bridge construction site is affected by the sea working conditions such as water depth, weather, current, etc. In terms of problems, various problems have been pointed out.

In order to solve the problems of the offshore crane ship, a tower crane for a bridge that can significantly reduce the cost and time by installing a crane directly on the upper structure of the bridge, that is, the head of the bridge appeared.

The tower crane for the bridge requires a separate tower crane fixing device to be installed in the bridge.

Korean Utility Model Publication No. 439935 discloses a form of a tower crane fixing device for a bridge.

1 is an exploded perspective view of a conventional tower crane fixing device, Figure 2 is a side view of the tower crane fixing device of Figure 1 mounted on the piers.

As shown in FIG. 1, a conventional tower crane fixing device includes an anchor bolt 110 installed on an upper surface of a head of a pier, a base 120 fixed to the anchor bolt 110, and an upper portion of the base 120. It is installed on the mounting base 130 to support the lower portion of the tower crane.

The base 120 is composed of a fixing plate 121 is formed with a fastening through-hole 121a for inserting the tip of the anchor bolt 110 on the plate surface, a pair of horizontal bars 122 and vertical bars 123 and H It is made of section steel.

The mounting base 130 is fixed to the vertical bar 123 of the base 120 by the fastening member 150, the fixing portion 131 corresponding to the lower edge of the tower crane and connecting the fixing portion 131 It consists of a connecting bar 132.

And the reinforcing plate member 140 is welded and inserted to reinforce the area where the load is concentrated in the horizontal bar 122 and the vertical bar 123 composed of H-shaped steel.

In the conventional tower crane fixing device configured as described above, the base 120 and the mounting table 130 are manufactured and combined as separate members, and the width of the base 120 is relatively larger than the width of the mounting table 131. It is largely formed.

Therefore, since the base 120 occupies a large area of the head pier head, the upper head head space becomes narrow, which causes a problem that the working space in which workers, facilities, members, etc. are placed during the bridge construction process is reduced.

In addition, since the trouble of having to assemble the base 120 and the mounting table 130 and the H-shaped steel is weakened, the strength is weakened, and the base 120 is directly installed to contact the concrete structure forming the head. If the upper surface of the head is not flat, there is a problem that it is difficult to match the balance of the tower crane fixing device.

Therefore, the present invention has been invented to solve such a problem, it is easy to install and dismantle the bridge and can reduce the size of the tower crane fixing device tower crane fixing device that can secure a large work space of the upper head The purpose is to provide.

In addition, an object of the present invention is to provide a construction method of the tower crane fixing device for the bridge that can easily support the parallelism and more stably support the tower crane when the tower crane fixing device is installed on the bridge.

The present invention is a tower crane (C) while being located on the fixing plate 11 and the plurality of fixing plates (11) detachably installed on the upper surface of the head (5) of the piers and the plurality of fixing plates (11) to correspond to each other Fixing device body 10 is formed integrally with a plurality of support plates 13 to be supported; Sheath pipe 21 is embedded in the head head 5 to a predetermined depth, and is inserted into the sheath pipe 21, one end is fixed and the other end is exposed to the fixing plate 11, the plurality of fixing plates 11 A steel rod assembly 20 having a plurality of steel rods 23 that are coupled and tensioned; And a fixing member 40 for fixing the steel bar 23 coupled to the fixing plate 11 of the fixing device body 10 to the fixing plate 11 so as to maintain a tensile force. ).

At least one plate assembly 30 embedded in the head head 5 so as to correspond to the plurality of fixing plates 11 and fixing the steel bars 23 while maintaining a distance of the embedded steel rod assembly 20. ) May be further included.

The plate assembly 30 has a plurality of steel bar through hole (31a) is formed to maintain a plurality of plates 31 to maintain the separation distance of the steel bar (23); A nut (32) for fixing the steel bar (23) to the plate (31); And a plurality of connection bars 33 connecting the plurality of plates 31.

The fixing member 40 is installed on the fixing plate 11 and the fixing plate 41 through which the steel bar 23 penetrates, and a fixing nut fixing the tensioned steel bar 23 in the fixing plate 41 ( 43).

The bridge tower crane fixing device 1 may further include a reinforcing material 50 installed between the fixing device main body 10 and the upper head 5.

On the other hand, the present invention is a steel rod assembly installation step (S10) for installing the steel rod assembly 20 so that the lower portion of the steel bar 23 is fixed to the reinforcing structure (SR) forming the main head portion 5 of the piers; Concrete pouring step (S30) to form the main head (5) by pouring concrete so that the steel bar 23 is exposed to a predetermined length; A fixing device main body mounting step (S40) for mounting the fixing device main body 10 on an exposed portion of the steel bar 23; And it provides a construction method of the tower crane fixing device for the bridge comprising a fixing step (S70) after the tension rod to tension the steel bar 23 is fixed to the fixing member 40.

After the steel rod assembly installation step (S10), a plate fixing step (S20) of fixing the separation distance using the steel bar 23 using the plate assembly 30 may be further performed.

After the fixing device body mounting step S40, a level adjusting step S50 for balancing the fixing device body 10 with respect to the head head 5 may be further performed.

After the level adjustment step (S50) it is preferable that the reinforcement installation step (S60) for installing the reinforcing material (5) on the top of the fixing device main body 10 and the concrete cast head (5) is preferably performed.

According to the tower crane fixing device and the construction method of the present invention has the following effects.

 First, since the size of the fixing device can be reduced and installation and disassembly in the bridge is easier, the construction cost can be drastically reduced, and the work space above the head head can be secured.

Second, the present invention is easy to match the parallelism and can support the tower crane more stably by the tensioned steel rod because the fixing device is not mounted in a way that is directly embedded in the head head when the tower crane fixing device is installed on the bridge have.

Third, the tower crane support and the crane anchor are secured on the same line while forming the part supporting the tower crane and the part installed on the head, so that the size and shape of the anchor can be designed more efficiently. have.

The present invention is a tower crane (C) while being located on the fixing plate 11 and the plurality of fixing plates (11) detachably installed on the upper surface of the head (5) of the piers and the plurality of fixing plates (11) to correspond to each other Fixing device body 10 is formed integrally with a plurality of support plates 13 to be supported; Sheath pipe 21 is embedded in the head head 5 to a predetermined depth, and is inserted into the sheath pipe 21, one end is fixed and the other end is exposed to the fixing plate 11, the plurality of fixing plates 11 A steel rod assembly 20 having a plurality of steel rods 23 that are coupled and tensioned; And a fixing member 40 for fixing the steel bar 23 coupled to the fixing plate 11 of the fixing device body 10 to the fixing plate 11 so as to maintain a tensile force. ).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Figure 3 is a side view of the tower crane fixing device construction state according to an embodiment of the present invention, Figure 4 is an enlarged view of the "A" region of Figure 3, Figure 5 is a tower crane fixing device of the present invention Is a perspective view of the upper portion of the pier is mounted, Figure 6 is a picture showing the step before the concrete is cast in the construction method of the tower crane fixing apparatus of the present invention, Figure 7 is installed in the upper and lower regions of the steel bar, respectively 8 is a plan view of a plate assembly, and FIG. 8 is a flowchart of one embodiment of a method for constructing a tower crane fixing apparatus of the present invention.

As shown in FIG. 3, the tower crane fixing apparatus 1 according to the exemplary embodiment of the present invention is configured to occupy a smaller area than the conventional one in a range that does not disturb the reinforcing structure SR of the main pier 5. Therefore, since it does not occupy a large area in the main head (5) of the bridge after construction, it is possible to secure a wider working space.

In more detail, the tower crane fixing device 1 of the present embodiment is installed on the upper surface of the head head 5 of the pier while the fixing device main body 10 for supporting the tower crane C, and the head head ( 5) a steel rod assembly 20 embedded in the reinforcing structure SR of a predetermined depth and having a steel bar 23 coupled to the fixing device main body 10 to be tensioned, and the separation distance between the steel bar assembly 20 It may include a plate assembly 30 for fixing the steel bar 23 while maintaining.

The fixing device body 10 is located on the fixing plate 11 so as to correspond to the plurality of fixing plates 11 and the plurality of fixing plates 11 detachably installed on the upper surface of the head (5) of the piers. A plurality of support plates 13 for supporting the tower crane C is integrally formed.

A plurality of steel bar through holes 11a (in this embodiment, four steel bars 23 may pass through the fixed plate 11 so that the embedded steel bar 23 passes through the fixed plate 11 to be exposed upward). Four are formed). Of course, the steel rod through-hole (11a) will be deformable according to the number of steel rods are installed.

In addition, a plurality of installation holes 13a may be formed in an appropriate number (four in this embodiment) so that the support plate 13 may be coupled to the lower portion of the tower crane C.

Each of the fixing plate 11 and the supporting plate 13 is provided to be spaced apart by a predetermined distance. The four fixing plates 11 are connected to each other by lower frames 12, and the four supporting plates 13 are connected to each other by upper frames 14. The adjacent upper frames 14 are connected to each other by a cross frame 15.

The fixing plate 11, the lower frame 12, the support plate 13, the upper frame 14 and the cross frame 15 are integral with each other, so that the fixing device body 10 is transported, installed and disassembled. Becomes easy.

The fixed plate 11 and the support plate 13 is preferably positioned to correspond to each other at the top and bottom has a substantially four-point support form. That is, as shown in FIG. 4, when the fixing plate 11 and the supporting plate 13 are located on the same line in the vertical direction, the supporting points of the fixing plate 11 on which the bridge is mounted and the supporting plate 13 supporting the tower crane are provided. Since it can be matched, the size of the fixing device main body 10 can be configured smaller than the conventional one.

The steel bar assembly 20 is the sheath pipe 21 is embedded in the head head 5 to a predetermined depth, the sheath pipe 21 is inserted into the sheath pipe 21 and part of the fixed plate 11 while the plurality of fixed plates It is provided with a plurality of steel bars (23) coupled to (11).

The sheath tube 21 is a hollow tube so that the steel bar 23 is inserted into the reinforcing bar structure SR so that the steel bar 23 can be inserted into the inside, and is completely embedded in the slab of the head head 5 while concrete is poured.

The steel bar 23 may be made of a reinforcing bar thread or wrinkles so that the nuts (32, 40) can be fastened. In addition, the steel bar 23 preferably has a property to restore elasticity when tensioned. It is fastened to the fixing nut 40 in a tensioned state after the steel bar 23 is coupled to the fixing plate 11 of the fixing device main body 10, the tensile force is sufficient to act the holding device main body 10 This is to make it more firmly fixed to the bridge by pulling the. Therefore, the steel bar 23 can be modified to other materials that can be given a tension force such as steel wire.

The plate assembly 30 is embedded in the head head 5 to correspond to the plurality of fixing plates 11 to maintain the separation distance of the steel bar assembly 20 or to fix the steel bar 23. do.

The plate assembly 30 may be provided at the top and bottom of the steel rod assembly 20 in the same form or different forms.

First, as shown in FIGS. 4 to 7, the plate assembly 30 provided on the upper part of the steel bar assembly 20 is positioned above the head head 5 to determine the separation distance of the steel bar assembly 20. The plate 31 and the nut 32 and the connecting bar 33 to maintain.

The plate 31 is a rectangular plate material, a plurality of steel rod through holes 31a through which the steel rod assembly 20 can pass to maintain the separation distance between the steel bars 23.

In addition, the nut 32 may be fastened to the steel rod assembly 20 that has passed through the steel rod through light 31a.

The plurality of plates 31 are controlled by the connecting bar 33, the separation distance. For example, the connecting bar 33 may be provided as a reinforcing bar to adjust the separation distance by welding to the plate 31 in the field construction process.

The plate assembly 30 provided below the steel rod assembly 20 serves to fix the lower portion of the steel bar 23. Likewise, the above-described plate assembly 30 may be implemented. In the present embodiment, the lower part of the steel bar 23 and the reinforcing structure SR may be formed by a plate 35 which may be fixed by mutual welding or the like. .

Therefore, since the lower bar 23 is fixed to the lower bar 23 is coupled to the fixing plate 11 of the fixing device main body 10 is fastened by the fixing member 40 in the tensioned state fixed body main body Tensile force can be applied to (10). For reference, the steel bar 23 may be tensioned upward in the vertical direction by using a tension device (not shown), such as a separate jack (jack).

The fixing member 40 is installed on the fixing plate 11 and the fixing plate 41 through which the steel bar 23 penetrates, and a fixing nut fixing the tensioned steel bar 23 in the fixing plate 41 ( 43).

The fixing plate 41 is smaller than the size of the steel rod through hole (11a) to prevent the steel bar 23 passing through the steel rod through hole (11a) formed in the fixing plate 11 to shake in the steel rod through hole (11a). Through holes (not shown) may be formed. The fixing plate 41 is preferably provided with a size smaller than the size of the fixing plate 11 is installed when using a tool such as a jack during the tension of the steel bar (23).

The fixing nut 43 is used when the steel bar 23 is fastened in a tensioned state after being coupled to the fixing plate 11 of the fixing device body 10.

Meanwhile, when the steel rod assembly 20 and the plate assembly 30 are mounted on the reinforcing bar structure SR of the bridge, concrete is poured to the lower part of the plate assembly 30 to make the head head 5 slab. At this time, the plate assembly 30 may be completely dismantled and embedded before placing concrete, and may be embedded by loosening the nut 32 fastened to the plate 31.

In the state in which the head head 5 slab is made, the aforementioned fixing device body 10 is coupled to the steel bar assembly 20, and the steel bar 23 is coupled to the fixing plate 11 of the fixing device body 10. After the fixing plate 41 of the fixing member 40 is fitted, it is tensioned by a jack or the like. And the steel bar 23 is coupled to the fixing nut 43 in a tensioned state to be able to exert a tensile force on the fixing device body (10).

Here, when the fixing device body 10 is coupled to the steel rod assembly 20, it is possible to perform a level adjustment step of balancing the fixing device body 10 with respect to the head head (5).

At this time, the reinforcing member 50 is installed in the space between the fixing device main body 10 and the upper head 5 upper surface. As the reinforcing material 50, non-shrink mortar is used, and the non-shrink mortar has more than twice the strength of concrete and more firmly fixes the fixing device main body 10 mounted on the head head 5.

Hereinafter, the construction method of the tower crane fixing device for a bridge of the present invention.

8 is a flow chart of an embodiment of the construction method of the tower crane fixing apparatus of the present invention.

Referring to the above-described drawings and Figure 8, the construction method of the tower crane fixing device for the bridge of the present embodiment, first, the steel bar 23 and the sheath pipe ( Performing the steel rod assembly installation step (S10) for embedding 21). The sheath tube 21 is a hollow tube is installed to be inserted into the steel bar 23 so that the outside is adjacent to the reinforcing structure (SR) forming the head head (5).

The steel bar assembly 20 may be installed while being embedded in the reinforcing steel structure (SR) so that the lower portion of the steel bar 23 is fixed while inserting the sheath tube 21 to surround the outside of the steel bar (23). Here, the steel bar 23 may be made of a reinforcing bar thread or wrinkles so that the fixing nut 43 of the fixing member 40 can be fastened, and can be deformed as long as the member can be introduced into the tension force.

Since the steel bar assembly 20 can be installed in the spaced apart space of the reinforcing bar structure SR forming the head head 5, since no separate space is required, the steel bar assembly 20 can be easily installed in the bridge construction step. Can be constructed.

When the steel rod assembly 20 is installed, the plate fixing step (S20) of fixing the steel rod 23 using the plate assembly 30 is performed.

The plate fixing step S20 supports the steel bars 23 so that their positions do not change during concrete pouring while maintaining the separation distance of the plurality of steel bars 23.

When the steel rod assembly 20 and the plate assembly 30 are mounted on the reinforcing bar structure SR of the bridge as shown in the photograph attached to FIG. 6, concrete is poured to the lower part of the plate assembly 30 so that the slab head 5 may be slabed. To form.

Therefore, after the plate fixing step (S20), the concrete placing step (S30) for placing concrete so that the steel bar 23 is exposed to a predetermined length is performed.

In the concrete pouring step (S30), the concrete is poured to the upper portion of the plate assembly 30 to form a head head 5 slab, so that only the upper region of the steel bar 23 is exposed to the head head 5 slab. do.

When the head head 5 is completed, a fixing device main body mounting step (S40) of mounting the fixing device main body 10 to the exposed portion of the steel bar 23 is performed.

In the fixing device mounting step (S40), the fixing plate 11 of the fixing device body 10 is coupled to the exposed steel bar 23. That is, while the exposed portion of the steel bars 23 passes through the steel bar through-hole 11a of the fixing plate 11, the fixing device 10 is mounted to the steel bar 23.

Here, when the fixing device body 10 is coupled to the steel rod assembly 20, the level adjusting step (S50) of balancing the fixing device main body 10 with respect to the head head 5 may be performed together.

After the fixing device main body 10 is mounted and the level is adjusted, the reinforcement re-installation step of installing the reinforcing material 50 on the fixing device main body 10 and the head of the concrete in which the concrete is poured (S60) Is performed.

That is, the reinforcing material 50 may be made by pouring non-shrink mortar, the reinforcing material in the spaced space between the fixing device main body 10 and the upper head 5 through the reinforcing dog installation step (S60). 50) is installed. As the reinforcing material 50, the non-shrink mortar is used, the non-shrink mortar has more than twice the strength of the concrete and to more firmly fix the fixing device body 10 mounted on the head (5).

Subsequently, the steel bar 23 is provided with a fixing plate 41 of the fixing member 40 to the steel bar 23 passing through the fixing plate 11, the steel bar 23 is tensioned, and then the steel bar tension is fixed by fastening with a fixing nut 43. After the fixing step (S70) is performed.

The steel bar 23 may be tensioned in the vertical direction through the jack (jack), and after being tensioned, is fastened with a fixing nut 43. For example, by giving a tensile force of 300 bar can be made to increase the steel bar 23 by about 1cm. Therefore, by the tensile force given to the steel bar 23, the fastening force to the bridge body 10 can be strengthened to the bridge.

As described above, the present invention can reduce the size of the fixing device for installing the tower crane for the bridge and can be easily installed and dismantled in the bridge, thereby significantly reducing the construction cost and securing a large work space on the upper head. Can be.

In other words, it is possible to design the size and shape of the fixing device more efficiently because the support points of the tower crane and the supporting point of the crane fixing device are secured on the same line while integrally forming the parts supporting the tower crane and the parts installed in the head head. have.

In addition, the present invention is easy to match the parallelism and the tower crane can be more stably supported by the tensioned steel rods because the fixing device is mounted so that the upper head is spaced apart when the tower crane fixing device is installed on the bridge.

The above-described tower crane fixing device for bridges of the present invention is spaced apart from the reinforcing structure (SR) forming the steel rod assembly (20) and the plate assembly (30) on the reinforcing structure (SR) at the construction stage of the bridge (5). Since it can be installed in a predetermined space, since no separate space is required, it can be easily installed when the crane is installed in the bridge construction stage.

In addition, after the use of the crane (C) mounted for the crane fixing device is finished, the fixing nut 43 coupled to the steel bar 23 is dismantled, and thus the upper part of the steel bar 23 and the reinforcing material 50 may be dismantled. It is easy to disassemble after the bridge construction.

In addition, since the disassembled fixing device body 10 is integrally detached from the steel bar 23, it can be reused as much as possible, and its size and weight are drastically reduced than before. Become.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is an exploded perspective view of a conventional tower crane fixing device.

Figure 2 is a side view of the tower crane fixing apparatus of Figure 1 mounted on the piers.

Figure 3 is a side view of a state in which the fixing device of the tower crane according to an embodiment of the present invention.

4 is an enlarged view of area “A” of FIG. 3;

5 is a perspective view of the upper portion of the piers equipped with the tower crane fixing apparatus of the present invention.

Figure 6 is a photograph showing the step before the concrete is poured in the construction method of the tower crane fixing apparatus of the present invention.

7 is a plan view of a plate assembly installed in the upper and lower regions of the steel rod, respectively.

Figure 8 is a flow diagram of one embodiment for the construction method of the tower crane fixing apparatus of the present invention.

<Description of reference numerals for main parts of the drawings>

1: Tower Crane Fixing Device 5: Head Head 10: Fixing Device

11 fixed plate 12 lower frame 13 support plate

14: upper frame 15: cross frame 20: steel rod assembly

21 Sheath pipe 23 Steel rod 30 Plate assembly

31 plate 33 side connection bar 35 inner connection bar

40: fixing nut 50: non-contraction mortar C: tower crane

S10: Sheath pipe buried step S20: Steel rod installation step

S30: plate fixing step S40: concrete pouring step

S50: Fixing device mounting step S60: Maltar pouring step

S70: Nut Fastening Step

Claims (9)

delete A plurality of fixing plates 11 detachably installed on the upper surface of the head of the pier 5 and the tower crane C are supported while being positioned on the fixing plates 11 so as to correspond to each other. Fixing apparatus main body 10 is formed integrally with a plurality of support plate 13; Sheath pipe 21 is embedded in the head head 5 to a predetermined depth, and is inserted into the sheath pipe 21, one end is fixed and the other end is exposed to the fixing plate 11, the plurality of fixing plates 11 A steel rod assembly 20 having a plurality of steel rods 23 that are coupled and tensioned; A fixing member 40 fixing the steel bar 23 coupled to the fixing plate 11 of the fixing device body 10 to the fixing plate 11 to maintain a tensile force; And At least one plate assembly 30 embedded in the head head 5 so as to correspond to the plurality of fixing plates 11 and fixing the steel bars 23 while maintaining a distance of the embedded steel rod assembly 20. Tower crane fixing device for a bridge, characterized in that it comprises a). The method of claim 2, The plate assembly 30 A plurality of plates 31 formed with a plurality of steel bar through-holes 31a to maintain the separation distance of the steel bars 23; A nut (32) for fixing the steel bar (23) to the plate (31); And Tower crane fixing device for a bridge, characterized in that it comprises a plurality of connecting bars (33) connecting the plurality of plates (31). The method of claim 2, The fixing member 40 is installed on the fixing plate 11 and the fixing plate 41 through which the steel bar 23 penetrates, and a fixing nut fixing the tensioned steel bar 23 in the fixing plate 41 ( Tower crane fixing device (1), characterized in that it comprises a 43). The method according to any one of claims 2 to 4, The tower crane fixing device for the bridge (1) The tower crane fixing device for bridges, characterized in that it further comprises a reinforcement (50) installed between the fixing device main body (10) and the head head (5). delete Steel rod assembly installation step (S10) for installing the steel rod assembly 20 so that the lower portion of the steel bar 23 is fixed to the reinforcing structure (SR) forming the main head portion 5 of the piers; A plate fixing step (S20) of fixing the separation distance using the steel bar (23) using the plate assembly (30); Concrete pouring step (S30) to form the main head (5) by pouring concrete so that the steel bar 23 is exposed to a predetermined length; A fixing device main body mounting step (S40) for mounting the fixing device main body 10 on an exposed portion of the steel bar 23; And Construction method of the tower crane fixing device for a bridge comprising a fixing step (S70) after tensioning the steel bar to tension the steel bar (23) to fix the fixing member (40). The method of claim 7, wherein After the fixing device body mounting step (S40), the tower crane fixing device for bridges, characterized in that the level adjustment step (S50) for balancing the fixing device main body 10 with respect to the head head (5) is further performed. Construction method. The method of claim 8, After the level adjustment step (S50) is characterized in that the reinforcing material installation step (S60) for installing the reinforcing material (5) on the upper portion of the head (5) on which the fixing device body 10 and the concrete is poured is further performed. Construction method of the tower crane fixing device for bridges.

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