JP4654075B2 - Tower crane foundation receiving beam structure - Google Patents

Description

  The present invention relates to a foundation receiving structure for a tower crane that supports a tower crane with a lifting function using a building frame.

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. Since the beam on which the crane mount is placed is heavy, a measure is adopted in which the beam height itself is firmly designed in advance.
Japanese Patent Application No. 2004-90751 JP-A-6-156882 Patent No. 2942054 Japanese Patent Laid-Open No. 11-301973

  As described in Patent Document 1, according to the structure in which the gantry is placed and fixed on the receiving beam, the height to the top of the gantry becomes extremely high, and there is a case where it does not fit within the floor height. In addition, because of its high height, a torsional moment is generated on the receiving beam side with respect to the lateral force generated in the crane mount, and reinforcement measures have been forced.

  Further, FIG. 5 shows a basic receiving beam structure of a general tower crane. The protruding portion of the outrigger C extending from the left and right of the gantry B is placed on the temporary receiving beam A, and the lower flange is mounted. The outrigger C is fixed by tightening D and the outrigger C with a bolt G between the lower support member E and the upper support member F.

Accordingly, the height H that is required to support the platform B, as shown in FIG. 6, the height H ₀ of the temporary receiving beam _A, the height H ₁ of the outrigger _C, the support members E, the height of the F becomes the sum of the height H ₃ to the top end of the protruding tip or pedestal of H ₂ and V G, it had become higher extremely high.

Further, FIG. 7 shows a case where the protruding portion of the outrigger J is placed on the main beam I. However, since the main beam I is not strong enough to receive a large weight, the weight applied to the gantry K is increased. In order to support it, a reinforcing beam L is disposed below the main beam I.
Also in the above conventional example, the height required to support the gantry K is extremely high, and the floor height is sometimes exceeded.

  Also, in recent high-rise RC buildings, the 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 solid walls and core walls are the size of the cross section of the beam It is small and slender. Therefore, there is no problem as a whole structure of the building, but it is impossible to support a heavy crane stand as it is on a small beam.

The above-mentioned patent document 2 is a construction method in which a jaw is attached to a pillar and a tower crane is sequentially raised upward like a scale insect while supporting a gantry with the jaw.
Patent Document 3 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 4, 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, the height required to support the gantry is extremely high, and in RC construction, the beam is often built weakly and a tower crane is installed. For this purpose, the tower crane base is enlarged to disperse the load, and the concentrated load is reduced, or the beam is reinforced.
Also in the S structure, the structure for supporting the gantry is tall as described above, and considerable reinforcement is required when the beam is weak in strength. In addition, the reinforcing portion is often removed later, which necessitates procurement of unnecessary members and useless construction.

  The present invention solves the above-mentioned problem, and in a foundation receiving beam structure for supporting a tower crane frame, the frame is fixed to the beam by passing an outrigger of the frame through an opening provided in the web of the beam. It is characterized by the foundation receiving beam structure of the tower crane.

  Further, an outrigger that protrudes through the web is placed on a cradle fixed inside the lower flange of the cradle, a support member is positioned above the outrigger, and a bolt is placed between the cradle and the support member. It is characterized by a foundation-carrying beam structure for a tower crane in which a gantry is fixed to the receiving beam by spanning and tightening the bolt.

  In addition, an outrigger that penetrates the web is inserted between the cradles fixed inside the upper and lower flanges of the cradle, and the outrigger is placed on the lower cradle and is generated between the upper cradle and the outrigger. It features a tower crane foundation receiving beam structure in which a frame is fixed to the receiving beam by driving wedges into the gap.

  In addition, an outrigger that protrudes through the web is inserted between the cradles fixed inside the upper and lower flanges of the cradle, and the outriggers are placed on the lower cradle and pressed against the lower plate of the upper cradle. It is characterized by a foundation receiving beam structure of a tower crane in which a bolt is penetrated and the upper surface of the outrigger is pressed by tightening the pressing bolt to fix a frame to the receiving beam.

  In addition, an outrigger that penetrates the web is inserted between the cradles fixed inside the upper and lower flanges of the cradle, and the outrigger is placed on the lower cradle and is generated between the upper cradle and the outrigger. It is characterized by a tower crane foundation receiving beam structure in which a flat jack is arranged in the gap, and the upper surface of the outrigger is pressed by the flat jack ascending to fix the frame to the receiving beam.

  In addition, the upper base plate of the lower pedestal is characterized by a tower crane foundation receiving beam structure in which cotters are provided on the left and right sides of the position corresponding to the width of the outrigger.

  Further, the receiving beam is a vertical beam surface of a tower crane which is structured such that a bracket is fixed to a vertical member surface or an approximate vertical member surface as a building body by a PC steel rod, and both ends of the receiving beam are supported by the bracket. It is characterized by. The approximate vertical member means a column and a wall member inclined from the vertical direction. Hereinafter, the vertical member includes an approximate vertical member.

  The present invention can lower the mounting height from the lower end of the temporary receiving beam or the main beam to the upper end of the outrigger by penetrating the opening provided in the web portion of the beam that receives the outrigger protruding from the left and right of the gantry. Therefore, the height required to support the gantry as a whole can be kept low, and therefore it is possible to prevent the occurrence of a torsional moment on the beam side caused by a lateral force from the crane gantry.

  In addition, since the mounting height can be kept low, it can be stored sufficiently in the height of the floor, and the degree of freedom of installation in the enclosure has been greatly increased.

  Furthermore, by using the cotter on the cradle, it is possible to prevent the role of the guide and the horizontal movement when inserting the outrigger.

  Further, in the case of the temporary receiving beam, the edge of the permanent beam can be cut, so that the permanent beam does not take charge of the deformation and the horizontal force does not have to be borne. In particular, when the main beam is RC, it is easy to ensure soundness.

  In addition, since the bracket that supports the tower crane stand is attached to a vertical member such as a pillar member or a load-bearing wall as a building frame, the load on the tower crane can be supported by the vertical member, and only conventional beam support is available. The beam reinforcement caused by In addition, a large load can be supported.

  In addition, 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.

  Furthermore, in addition to the support by the frictional force, the support by the shearing force of the bolt can be used in combination, and the load support can be dispersed.

  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.

  FIG. 1: has shown the front view of the foundation receiving beam structure of the tower crane which installed the tower crane of this invention in the building. A structure in which the frame is received by a temporary receiving beam or a main beam (hereinafter referred to as a receiving beam) that is installed between the building frames, and a tower crane is fixed on the frame.

  The tower crane 1 supports the receiving beam 4a on 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 passes through the column 2 through the hole of the mounting plate 6 of the bracket 3 and protrudes to the mounting plate 7 on the opposite side, and is fixed at the portion. It is firmly fixed by the tool 8.

In FIG. 2 (c), the bracket 3 is attached by the PC steel bar 5 as described above. However, when the bracket 3 is large, the PC steel bar 5 extends between the opposing outer walls of the column 2. The bracket 3 is fixed between the bracket 3 or the bracket 3 and the mounting plate.
In the above case, the bracket 3 can be removed without cutting the PC steel bar 5.

  2D is a plan view showing a state in which the gantry 4 is placed on the bracket 3, and FIG. 2E shows a side view thereof. The receiving beams 4a spanned between the brackets 3 are provided with an appropriate number of the same ones at appropriate intervals. The receiving beam 4a forms an opening in a part of the web, and the protruding portion of the outrigger extending from the left and right of the gantry 4 passes through the opening. By penetrating the outrigger, the axial center of the outrigger and the axial center of the receiving beam 4a can be made to coincide or substantially coincide with each other, and a twisting phenomenon can be prevented.

  The vertical member may be a core wall forming a core in addition to the pillar, or may be another load bearing wall.

  The receiving beam 4a is supported by the various brackets. As shown in FIG. 3, the outriggers 14 are protruded from both ends of the gantry 4 through the opening 13 of the receiving beam 4a. On the upper surface plate 17 of the cradle 16 fixed to the inside of the side flange 15, cotters 18 are provided on the left and right of the position corresponding to the width of the outrigger 14, and the outrigger 14 is slid and placed between the cotters 18. Then, the bolt 19 is spanned between the support member positioned above the distal end portion 14 a of the outrigger 14 and the upper surface plate 17 and tightened firmly. By spanning the bolt 19 so as to follow the side surface of the tip portion 14a of the outrigger 14, the tip portion 14a can be fixed within a small width. The cradle 16 is also installed on the lower flange 15 on the opposite side of the receiving beam 4a. The height of the cradle 16 is slightly higher than the position of the lower side of the opening 13 and the width is larger than the width of the opening 13. The cotter 18 can prevent the outrigger 14 from moving in the horizontal direction, in addition to the role of the guide when the outrigger 14 is inserted.

  As shown in FIGS. 4A to 4D, various correspondences are conceivable with respect to the relationship between the outrigger tip and the cradle, the support member, the bolt, and the clearance between the outrigger tip and the cradle.

FIG. 4A is a cross-sectional view of the perspective view shown in FIG.
In FIG. 4B, the cradles 22 and 23 are fixed inside the lower upper flanges 20 and 21, and the outrigger tip 14 b is inserted between the cradles 22 and 23 and placed on the cradle 22. The upper plate 24 of the cradle 22 of the lower flange 20 is provided with a cotter 25 for restraining the role of the guide and the horizontal movement when inserting the outrigger, and under the cradle 23 of the upper flange 21. A wedge 27 is driven into the gap between the face plate 26 and the outrigger tip 14b to fix the outrigger tip 14b.

  In FIG. 4 (c), the cradle 30, 31 is similarly fixed inside the lower upper flanges 28, 29, and the outrigger tip 14 c is inserted between the cradle 30, 31 and placed on the cradle 30. The upper plate 32 of the cradle 30 of the lower flange 28 is provided with a cotter 33 for restraining the role of the guide when the outrigger is inserted and the movement in the horizontal direction. A pressing bolt 35 is provided through the face plate 34, and by rotating the pressing bolt 35, the upper surface of the outrigger tip 14c is strongly pressed to fix the outrigger tip 14c.

  In FIG. 4D, similarly, the receiving bases 38 and 39 are fixed inside the lower upper flanges 36 and 37, and the outrigger tip 14 d is inserted between the receiving bases 38 and 39 and placed on the receiving base 38. The upper surface plate 40 of the cradle 38 of the lower flange 36 is provided with a cotter 41 for restraining the role of the guide and the horizontal movement when inserting the outrigger, and under the cradle 39 of the upper flange 37. A flat jack 43 is inserted into the gap between the face plate 42 and the outrigger tip 14d, and the flat jack 43 is raised to press the surface of the outrigger tip 14d and the bottom plate 42 of the cradle 39 with the receiving plate. The outrigger tip 14d is firmly fixed.

  In the above embodiment, the support structure of the receiving beam is a structure in which a bracket is fixed to the surface of a vertical member that is a building frame by a PC steel rod, and both ends of the receiving beam are supported by the bracket. However, the present invention is not limited thereto, and is intended for a receiving beam that is a normal frame or a temporary receiving beam that uses the frame.

It is a front view which shows the whole foundation receiving beam structure of a tower crane. It is a front view of the bracket support part of the foundation receiving beam structure of a tower crane. It is a side view of the bracket support part of the foundation receiving beam structure of a tower crane. It is a plane sectional view of other examples of a bracket support part of a foundation receiving beam structure of a tower crane. It is a top view which shows the whole foundation receiving beam structure of a tower crane. It is a front view which shows the whole foundation receiving beam structure of a tower crane. It is a perspective view of the Example which shows the support structure of the outrigger of the foundation receiving beam structure of the tower crane of this invention. It is a sectional side view of the Example which shows the support structure of the outrigger of the foundation receiving beam structure of the tower crane of this invention. It is a sectional side view of the other Example which shows the support structure of the outrigger of the foundation receiving beam structure of the tower crane of this invention. It is a sectional side view of the other Example which shows the support structure of the outrigger of the foundation receiving beam structure of the tower crane of this invention. It is a sectional side view of the other Example which shows the support structure of the outrigger of the foundation receiving beam structure of the tower crane of this invention. It is a perspective view of the prior art example which shows the support structure of the outrigger of the foundation receiving beam structure of a tower crane. It is a sectional side view of the prior art example which shows the support structure of the outrigger of the foundation receiving beam structure of a tower crane. It is a sectional side view of the other conventional example which shows the support structure of the outrigger of the foundation receiving beam structure of a tower crane.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tower crane 2 Pillar 3 Bracket 4 Mounting frame 4a Temporary receiving beam 5 PC steel bar 6, 7 Mounting plate 8 Fixture 12 Web 13 Opening part 14 Outrigger 14a, 14b, 14c, 14d Outrigger front-end | tip part 15, 20, 28, 36 Bottom Side flange 16, 22, 23, 30, 31, 38, 39 Receiving base 17, 24, 32, 40 Top plate 18, 25, 33, 41 Cotter 19 Bolt 21, 29, 37 Upper flange 26, 34, 42 Bottom plate 27 Wedge 35 Pushing bolt 43 Flat jackie

Claims (7)

  A foundation receiving beam structure for supporting a tower crane stand, wherein the outrigger of the stand is passed through an opening provided in a web of the receiving beam and the stand is fixed to the receiving beam. Receiving beam structure.   An outrigger that protrudes through the web is placed on a cradle fixed to the inside of the lower flange of the cradle, a support member is positioned above the outrigger, and a bolt is passed between the cradle and the support member. The foundation receiving beam structure for a tower crane according to claim 1, wherein a frame is fixed to the receiving beam by tightening the bolt.   A gap created between the upper cradle and the outrigger by inserting an outrigger that protrudes through the web between the cradles fixed inside the upper and lower flanges of the cradle and placing the outrigger on the lower cradle. The foundation receiving beam structure for a tower crane according to claim 1, wherein the frame is fixed to the receiving beam by driving a wedge into the frame.   Insert an outrigger that protrudes through the web between the cradles fixed to the inside of each of the upper and lower flanges of the cradle, place the outrigger on the lower cradle, and push the bolts through the bottom plate of the upper cradle The base receiving beam structure for a tower crane according to claim 1, wherein the frame is fixed to the receiving beam by pressing the upper surface of the outrigger by tightening the pressing bolt.   A gap created between the upper cradle and the outrigger by inserting an outrigger that protrudes through the web between the cradles fixed inside the upper and lower flanges of the cradle and placing the outrigger on the lower cradle. 2. The tower-crane foundation receiving beam structure according to claim 1, wherein a flat jack is disposed on the upper beam, and the upper surface of the outrigger is pressed to raise the flat jack to fix the frame to the receiving beam.   6. A tower crane foundation receiving beam structure according to any one of claims 1 to 5, wherein the upper plate of the lower cradle is provided with cotters on the left and right sides of the position corresponding to the width of the outrigger.   The receiving beam has a structure in which a bracket is fixed to a vertical member surface or an approximate vertical member surface serving as a housing of a building by a PC steel rod, and both ends of the receiving beam are supported by the bracket. 6. A tower crane foundation receiving beam structure according to any one of 6 above.

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