JP4203441B2 - Tower crane support device and construction method thereof - Google Patents

Description

  The present invention relates to a support device that supports a frame of a tower crane with an elevating function with a housing of a building and a method for constructing the support device.

  In a conventional climbing tower crane with a lifting function (hereinafter referred to as a tower crane), the gantry supporting the mast part is supported using the building frame, but the supporting means is supported by placing the gantry on a beam member. is doing. However, in recent high-rise RC buildings, columns and beam members are made into PCa that is manufactured in advance in the factory in order to shorten the construction period, and those with strong walls and core walls are the size of the cross section of the beam It is small and slender. Accordingly, there is no problem with the overall structure of the building, but it is impossible to support the crane mount on a small beam as it is.

In such a case, a countermeasure is adopted in which the beam itself on which the crane mount is placed is designed in advance firmly.
JP-A-6-156882 Japanese Patent No. 2942054 Japanese Patent Laid-Open No. 11-301973 is a construction method in which a jaw is attached to a pillar, and a tower crane is sequentially lifted upward like a scale insect while supporting a gantry with the jaw. Further, Patent Document 2 discloses a support means for temporarily mounting a bracket on a pillar, laying a rail of a traveling crane on the bracket, and receiving the load of the traveling crane with the pillar. Further, in Patent Document 3, a jaw is attached to a steel column embedded in a wall, and a mount is installed on the jaw. Similarly to the above, this support means also lifts the crane little by little like a scale insect.

As described above, in RC construction, beams are often constructed with weak strength, and in order to install a tower crane, the tower crane base is enlarged to distribute the load and reduce the concentrated load. The idea to do is made. However, when the beam is extremely weak, it becomes difficult to install due to the overloading load even by the above means, and the beam needs to be reinforced.
Also in the S structure, if the beam is weak in strength as described above, considerable reinforcement is required. In addition, the reinforcing portion is often removed later, which necessitates procurement of extra members and useless construction.

Furthermore, as in the above-mentioned patent document, a construction method is known in which a bracket is attached to a pillar and a stand is provided on the bracket to support the tower crane. It is intended to be moved, and is not intended to promptly move a load applied to the gantry to a vertical member such as a column member or a wall member.
In addition, there has been no disclosure or suggestion about the mounting structure of the vertical member and the bracket and the construction method thereof.

The present invention solves the above-mentioned problem. In a support device for supporting a tower crane frame with a building frame, a bracket is fixed to a surface of a vertical member that is a building frame by a PC steel rod, and the space between the vertical members is fixed. A temporary receiving beam serving as one frame is bridged on the upper surface of the bracket, and the other frame on the tower crane side is installed on the frame beam positioned above the temporary beam so as to straddle the frame beam. The tower crane support device is characterized in that the beam is reinforced with a steel beam between the beam and the tower crane side frame to reinforce the frame beam.

Further, the tower crane support device is characterized in that the temporary support beam and the tower crane-side mount are firmly connected by a PC steel rod including a spacer and a frame beam for maintaining a gap.

  Further, the vertical member is characterized by a tower crane support device which is a column member or a wall member.

Further, in a method of constructing a support device for supporting a tower crane stand with a building frame , a bracket mounting plate is disposed on a vertical member serving as a building frame, and a mounting plate disposed on the opposite side of the vertical member; The bracket is fixed to the vertical member by connecting with a PC steel rod, and the PC steel rod is pulled and fixed, and then a temporary receiving beam serving as one frame is bridged on the upper surface of the bracket. Install the other frame on the tower crane side so as to straddle the frame beam on the frame beam located above the beam, and then mount the frame beam so that the temporary support beam and the frame on the tower crane side are integrated. It is characterized by a construction method for a tower crane support device in which a steel beam is reinforced by sandwiching it firmly with a PC steel rod.

Furthermore, in the construction method of the support device for supporting the tower crane stand with the building frame, an insert is embedded in advance in the vertical member that becomes the building frame, and a bracket mounting plate is disposed on the surface of the vertical member, The bracket is fixed to the vertical member by inserting a bolt into the insert from the hole of the mounting plate and temporarily fixing the bracket, and then connecting and pulling the PC steel rod to the mounting plate on the opposite side of the vertical member. Then, a temporary receiving beam serving as one gantry is bridged on the upper surface of the bracket, and the other gantry on the tower crane side is installed on the frame beam positioned above the temporary receiving beam so as to straddle between the gantry beams. , how to build a supporting device for tower cranes and the gantry of the temporary receiving beam and the tower crane side is reinforced firmly connected skeleton beams by PC steel rod so as to sandwich the building frame beam so as to be integrated And features.

Moreover, the vertical member used as the housing of the said building is characterized by the construction method of the support apparatus of the tower crane which is a pillar member or a wall member.

  In the present invention, since the bracket for supporting the tower crane stand is attached to a vertical member such as a pillar member or a load bearing wall which is a building frame, the load of the tower crane can be supported by the vertical member. Reinforcement of the beam by support became unnecessary. In addition, a large load can be supported.

  Furthermore, the load can be supported by the frictional force between the mounting plate using the PC steel bar and the vertical member, the concentrated load is applied to the conventional bolt, and the concrete surface around the bolt is not destroyed, From this point, it was possible to support a large load.

  Also, the load can be supported using the shear of the cotter, and it can be used in combination with the above-mentioned frictional force support, so that the load support can be dispersed. Became possible.

  Furthermore, in addition to support by frictional force, support by frictional force and cotter, support by shearing force of bolts can be used in combination, and load support can be dispersed, which also makes it possible to support heavy loads. did.

  In addition, when the load is supported by the beam and the vertical member, it is possible to easily transmit the load of the tower crane from the beam to the vertical member by attaching a bracket to the vertical member directly below the beam end.

  Furthermore, when a bracket is attached to the core wall, which is a vertical member, a tension member can be disposed in the gap between the main bars of the core wall, so that the strength of the frame can be ensured and less work is required. It became possible to do.

  FIG. 1: has shown the front view of the support apparatus of the tower crane which installed the tower crane of this invention in the building. As shown in the drawings in FIG. 2 and subsequent figures, a gantry is constituted by a temporary receiving beam or the like installed between brackets attached to a pillar member or a wall member as a vertical member of a building, and a tower crane is fixed on the gantry It will be.

  In the tower crane 1, the mount 4 is supported by a bracket 3 fixed to a vertical member (referred to as a column 2 in this embodiment). The bracket 3 is attached to the column 2 by a PC steel bar 5. As shown in FIGS. 2 (a) and 2 (b), the PC steel bar 5 penetrates the column 2 through the hole of the mounting plate 6 of the bracket 3 and protrudes to the mounting plate on the opposite side. 8 to fix firmly.

In FIG. 2 (c), the bracket 9 is attached by the PC steel bar 10 as described above. However, when the bracket 9 is large, the PC steel bar 10 extends between the opposing outer walls of the column 11. Then, fix between the brackets 9 or between the bracket 9 and the mounting plate.
In the above case, the bracket 9 can be removed without cutting the PC steel bar 10.

2D is a plan view showing a state in which the gantry 4 is placed on the brackets 3 and 9, and FIG. 2E shows a side view. Appropriate number of temporary receiving beams spanned between the brackets 3 and 9 are arranged at appropriate intervals. On the temporary receiving beam 4a, another temporary receiving beam 4b is bridged in a direction orthogonal to the temporary receiving beam 4a, and is constructed in a well shape by the temporary receiving beams 4a and 4b to form the lower frame 4 . . Placing the pedestal in tower cranes side of the frame on the temporary receiving beam formed該井type, the base of the tower crane 1 is to be fixed on its those gantry 4.

FIG. 3 shows a tower crane in which a temporary receiving beam 13 serving as a lower frame is provided immediately below a slender frame beam 12 serving as a frame, and the temporary receiving beam 13 is supported by a bracket 15 fixed to a column 14. An embodiment in which the load is transmitted to the gantry 4 on the tower crane side , the frame beam 12, the temporary receiving beam 13, the bracket 15 and the column 14 is shown.

  As in the first embodiment, the bracket 15 is attached to the column 14 by the PC steel rod 16. Fixed. In the second embodiment, a part of the PC steel rod 10 is fixed to the opposite mounting plate along the outer wall of the column 14.

FIG. 3C is a plan view of the second embodiment, and FIG. 3D is a side view.
A temporary receiving beam 13 serving as a frame on the lower side is bridged between the upper surfaces of the brackets 15 attached to the columns 14. An appropriate number of temporary receiving beams 13 spanned between the upper surfaces of the brackets 15 are disposed at appropriate intervals. The tower crane- side gantry 4 is installed on the frame beam 12 above the temporary receiving beam 13 so as to straddle the frame beam 12. An appropriate number of temporary receiving beams 13 spanned between the upper surfaces of the brackets 15 are arranged at appropriate intervals, and a direction perpendicular to the temporary receiving beams 13 is disposed on the temporary receiving beams 13. The platform 4 on the tower crane side is laid over and constructed into a well shape by the temporary receiving beam 13 and the platform 4 to form the entire platform. Between the temporary receiving beam 13 and the tower crane-side gantry 4, the PC steel rod 19 is firmly connected between the two, including the slender frame beam 12, through the spacer 18 that maintains the above-mentioned distance.
With the above configuration, the load of the tower crane disposed on the tower crane-side pedestal 4 is transmitted to the temporary receiving beam 13 through the frame beam 12 and supported by the column 14 through the bracket 15.

FIG. 4 shows an embodiment in which a bracket 21 is fixed to a core wall 20 forming a core.
The bracket 21 is attached to a part of the wall surface of the core wall 20 by the PC steel bar 22 in the same manner as in the first and second embodiments. The PC steel bar 22 is inserted from the hole of the mounting plate 23 of the bracket 21. It penetrates the core wall 20 and is fixed to the mounting plate 24 on the opposite side.

FIG. 4C shows a side view of the third embodiment.
Temporary receiving beams 25a are bridged between the brackets 21 attached to the core wall 20, and an appropriate number of temporary receiving beams 25a bridged between the brackets 21 are arranged at appropriate intervals. . Another temporary receiving beam 25b is installed on the temporary receiving beam 25a in the orthogonal direction so as to straddle the temporary receiving beam 25a. The temporary receiving beam 25a and the other temporary receiving beam 25b are constructed in a well shape to form a frame 25.

FIG. 5 shows an embodiment of the attachment means for the bracket 26. The bracket 26 is temporarily fixed to the column 27 with inserts 28 and bolts 29 embedded in the column 27 in advance, and then attached to the column 27 with a PC steel rod 30. The PC steel rod 30 is attached to the bracket 26. The column 27 passes through the hole of the mounting plate 31 and is firmly fixed to the mounting plate 32 on the opposite side.
Since the bracket 26 is temporarily secured to the column 27, the insertion and tightening operations of the PC steel rod 30 while the heavy bracket 26 is held at a fixed position are released.

FIG. 6 is an embodiment showing the positional relationship between the bracket 33 and the gantry 34. The bracket 33 is fixed to a vertical member 36 such as a column member or a wall member by a PC steel bar 35 as in the above embodiment.
The side end portion 38 of the temporary receiving beam 34a to be the gantry 34 is abutted and arranged on the side end portion 37 of the bracket 33 fixed to the vertical member 36, and the connection reinforcing plates 39 and 40 are arranged and fixed on the web and the flange portion. The bracket 33 and the temporary receiving beam 34a are connected and integrated.

It is a front view of the tower crane support apparatus of this invention. It is a front view of the bracket support part of the tower crane support apparatus of this invention. It is a side view of the bracket support part of the tower crane support apparatus of this invention. It is a plane sectional view of the bracket support part of the tower crane support device of the present invention. It is a top view which shows the whole tower crane support apparatus of this invention. It is a front view which shows the whole tower crane support apparatus of this invention. It is a front view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a side view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a top view of the other Example which shows the whole tower crane support apparatus of this invention. It is a front view of the other Example which shows the whole tower crane support apparatus of this invention. It is a front view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a side view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a front view of the other Example which shows the whole tower crane support apparatus of this invention. It is a front view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a side view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a front view of the other Example of the bracket support part of the tower crane support apparatus of this invention. It is a side view of the other Example of the bracket support part of the tower crane support apparatus of this invention.

Explanation of symbols

1 Tower crane 2, 11, 14, 27 Pillar 3, 9, 15, 21, 26, 33 Bracket 4, 25, 34 Mount 4a, 4b, 13, 25a, 25b, 34a Temporary receiving beam 5, 10, 16, 19 , 22, 30, 35 PC steel bar 6, 7, 17, 23, 31, 32 Mounting plate 8 Fixture 12 Beam 18 Spacer 20 Core wall 28 Insert 29 Bolt 36 Vertical member 37 Bracket end 38 Temporary receiving beam end 39 , 40 Reinforcement plate

Claims (6)

In a support device for supporting a tower crane frame with a building frame, a bracket is fixed to the surface of a vertical member serving as a building frame with a PC steel rod, and a temporary receiving beam serving as one frame on the upper surface of the bracket between the vertical members. Is installed on the frame beam located above the temporary receiving beam so that the other frame on the tower crane side spans between the frame beams, and the PC between the temporary receiving beam and the frame on the tower crane side is installed. A tower crane support device comprising a steel beam and a rigid connection that reinforces the frame beam. 2. The tower crane support device according to claim 1, wherein the temporary support beam and the tower crane-side mount are firmly connected by a PC steel rod including a spacer and a frame beam for maintaining a gap. 3. .   3. The tower crane support device according to claim 1, wherein the vertical member is a column member or a wall member. In a method of constructing a support device for supporting a tower crane stand by a building frame , a bracket mounting plate is disposed on a vertical member serving as a building frame, and the mounting plate and PC steel disposed on the opposite side of the vertical member. The bracket is fixed to the vertical member by connecting with a rod and the PC steel rod is pulled and fixed, and then a temporary receiving beam serving as one pedestal is bridged on the upper surface of the bracket. Install the other frame on the tower crane side so as to straddle between the frame beams on the upper frame beam, and then sandwich the frame beam so that the temporary receiving beam and the tower crane side frame are integrated. A method for constructing a tower crane support device, wherein the frame beam is reinforced by a strong connection with a PC steel rod. In a method for constructing a support device for supporting a tower crane stand with a building frame, an insert is embedded in advance in a vertical member serving as a building frame, and a bracket mounting plate is disposed on the surface of the vertical member. The bracket is fixed to the vertical member by inserting a bolt into the insert from the hole of the bracket and temporarily fixing the bracket, and then connecting and pulling the PC steel bar to the mounting plate on the opposite side of the vertical member. A temporary receiving beam to be one frame is bridged on the upper surface of the bracket, and the other frame on the tower crane side is installed on the frame beam located above the temporary beam so as to straddle between the frame beams. support apparatus of the tower crane and gantry temporary receiving beam and the tower crane side is characterized in that to reinforce the skeleton beam firmly connected by PC steel rod so as to sandwich the building frame beam so as to be integrated How to build.   The method for constructing a tower crane support device according to claim 4, wherein the vertical member serving as a building frame is a pillar member or a wall member.

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