JP2006111369A - Method for reinforcing tower crane frame installation part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a method for reinforcing a tower crane frame installation part in a case of construction of a building in a floor climbing method using a tower crane. <P>SOLUTION: A precast concrete wall 15 as a reinforcing member is provided between upper and lower precast beams 12 and 12 for a crane installation floor, and the precast concrete wall 15 is fixed to a structural surface to be capable of transmitting crane reaction to the upper and the lower beams. Preferably, the precast concrete wall 15 is designed to act as a wall member 13 of a structure of the building. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for reinforcing a tower crane mount installation part in the case of building a building by a floor climbing method.

  When a high-rise building is constructed by a precast concrete method, a tower crane is disposed inside the building to lift columns and beam members, and a floor climbing method is sometimes used for climbing. Such a tower crane is provided with a gantry between beams on an appropriate floor in the building, and the building is constructed by lifting the columns and beam members on the upper floor. At that time, the reaction force of the crane installation part is supported by the existing building structure via the beams and columns. In general, the reaction force of a tower crane is large, and in many cases it cannot be supported by only the beams of a building structure. Therefore, conventionally, it has been common to reinforce the construction surface by providing temporary bundle pillars or diagonal members on the beams that support the reaction force of the tower crane.

  Such bundle pillar materials and diagonal materials are temporary materials, and it takes time and effort to assemble them, and it is necessary to remove them.

  The purpose of the present invention is to improve the method for reinforcing the tower crane mount installation part, and in the case of building a building by a floor climbing system as a lifting machine for building construction, the tower crane mount installation part is reinforced. Suggest a method.

  The present invention has been made in order to solve the above-mentioned problems, and is a method for reinforcing a tower crane mount installation portion characterized by taking the following technical means. That is, according to the present invention, when a building is constructed by a floor climbing method using a tower crane, the precast concrete wall is interposed between the precast upper and lower beams on the crane installation floor as a reinforcing material, and the precast concrete wall generates a crane reaction force. It is a method of reinforcing a tower crane mount installation part, characterized in that it is fixed to the construction surface so that it can be transmitted to the vertical beam.

  In the present invention, a precast concrete wall is used as a reinforcing material for a tower crane mount installation part. This precast concrete wall is installed so that the crane reaction force can be borne by the upper and lower floors. The precast concrete wall may be removed as a temporary material after the crane is removed, or may be a building structure. When it is used as a building structure, it is not necessary to remove it, and it is most reasonable if it is designed from the beginning to achieve the purpose by using both the reinforcing material and the structural material.

  In the present invention, the building may be any of a PC structure, RC structure or SRC structure made of precast concrete, and it is preferable because the entire process can be performed reasonably quickly by using a precast concrete member. It is.

  The use of precast concrete walls as a reinforcing material in the precast concrete construction method is clear from the viewpoint of construction and is a very effective method for construction with a large span length.

  In high-rise condominiums and the like, the span length is relatively large, and generally, a door wall is provided in the construction surface. Therefore, the present invention is an effective reinforcing means. In recent condominiums, there is a large tendency towards free plans for room allocation, etc., and even if you want to remove the future boundary wall, according to the present invention, the wall material is a precast concrete wall, so it can be removed easily It is possible to leave.

  The construction surface and the precast concrete wall may be joined to each other as long as the structure can transmit the reaction force of the tower crane. By the way, even if a 600tm class tower crane is installed, the wall can be sufficiently reinforced using a precast concrete wall with a wall thickness of about 200 mm if the joining method can be cleared.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, the prior art will be described with reference to FIG. FIG. 4 is an explanatory diagram showing an intermediate stage during the construction of the building 10. The building 10 includes a column 11, a beam 12, and a girder 14. The mast 22 of the tower crane is installed on the gantry 21 and the gantry receiving beam 23. The gantry receiving beam 23 is stretched over two PCa beams 12 arranged in parallel. The PCa beam 12 is reinforced by a reinforcing member 31, a bundle pillar 32, and a brace 33. This reinforcement is also applied to the beam 12 on the lower floor. The base of the brace 33 is also provided with a reinforcing material 34 for joining with a column and a beam.

  FIG. 1 is a side view showing a framework of a building 10 and a side view showing a reinforcing method of a tower crane mount installation portion 20 according to an embodiment of the present invention, FIG. 2 is a view taken along the line AA, and FIG. It is an arrow view.

  In the reinforcing method of the tower crane mount installation part of the present invention, the PCa concrete wall 15 is set between the upper and lower beams 12. The PCa concrete wall 15 is optimally designed so that it can be used as a building structural material in the same manner as the wall 13 on the other floors. It is the same as that of the prior art that the gantry receiving beam 23, the gantry 21, and the mast 22 are provided on the beam 12 reinforced by the PCa concrete wall 15.

It is a side view which shows the framework of the building of an Example. It is an AA arrow line view (plan view) of FIG. It is a BB arrow line view (plan view) of FIG. It is a side view which shows the reinforcement method of the crane mount installation part of the conventional building.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Building 11 Column 12 Beam 13 Wall 14 Girder 15 PCa concrete wall 20 Tower crane mount installation part 21 Mount 22 Mast 23 Mount support beam 31 Reinforcement material 32 Bunch pillar 33 Brace 34 Reinforcement material

Claims (3)

  When building a building by floor climbing using a tower crane, a precast concrete wall is used as a reinforcement to interpose between the precast upper and lower beams on the crane installation floor, and the precast concrete wall can transmit the crane reaction force to the upper and lower beams. A method of reinforcing a tower crane mount installation part, characterized by being fixed to the construction surface as described above.   The method of reinforcing a tower crane mount installation part according to claim 1, wherein the precast concrete wall is a structure of a building.   The tower building installation method according to claim 1 or 2, wherein the building is a PC structure, RC structure, or SRC structure made of precast concrete.

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