JPH07197694A - Method of construction of connection type columnar body - Google Patents

Abstract

PURPOSE:To enable the execution of works even on an extremely narrow site without requiring a large-sized crane having high height. CONSTITUTION:A working box 2 projected to a high place to an upper section from the periphery of a foundation columnar body 1 is installed to the foundation columnar body 1 projected from a stable solid foundation section to the upper section of the ground in a freely vertically movable manner along the foundation columnar body 1, and a connecting columnar body 1' is placed on the ground in the vicinity of the working box 2. The connecting columnar body 1' is lifted to a place higher than the foundation columnar body 1 by a lifting gear mounted on the working box and moved onto the foundation columnar body 1 and connected and unified, and the working box 2 is elevated onto the connecting columnar body 1'. A process, in which a new connecting columnar body 1' is suspended similarly by the lifting gear and joined and unified with the preceding connecting columnar body, is repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a columnar body for use in antenna columns having a high height, various poles, columns for buildings, etc. by connecting a large number of relatively short connecting columns. It is about.

[0002]

2. Description of the Related Art Conventionally, there has been known a method of constructing a columnar body having a height of several tens of meters by successively hoisting connection columns with a crane and adding the columns from the bottom to the top.

[0003]

SUMMARY OF THE INVENTION In the above conventional method,
Since the pillar unit is hoisted by a crane, it is necessary to install a large and high crane such as a tower crane on the site, and therefore a considerably large site including the installation site of the crane is required as a column construction site, In such a place where it is difficult to secure the site, it is impossible to construct the columnar body.

Further, when constructing a columnar body in a mountainous area or a sloping ground, a large amount of cost and construction period are required in order to maintain a site for installing a crane, carry in and construct an assembly member of a crane, and thus a construction cost However, there was a problem that it would be quite expensive.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention provides a foundation column 1 projecting above the ground from a stable and solid foundation part, and a work box 2 projecting upward from the periphery thereof. Is installed along the foundation pillar 1 so that it can be lifted and lowered, a connection pillar 1'is placed on the ground near the work box 2, and the connection pillar 1'is hung by a lifting device provided in the work box. After raising it higher and moving it to the foundation pillar 1 to join and integrate it, raise the work box 2 onto the connecting pillar 1'and lift the new connecting pillar 1'with the lifting device as in the previous term. The method for constructing a connection-type columnar body is characterized by repeating the step of joining and integrating with the preceding connecting columnar body.

[0006]

Function: While the work box 2 is being lifted up intermittently, the connecting column 1'is lifted by the lifting device installed on the work box 2 and joined to the foundation column or the preceding connecting column 1 '. Construction can be performed without the need for a tall and large crane, and as a result construction can be performed even on extremely small sites, and construction costs can be reduced when compared to conventional construction when working on mountainous areas or sloping areas. Become.

[0007]

EXAMPLE First, as shown in FIG. 2, the lowest foundation column 1
The lower part of the base is projected to the ground as a stable and solid foundation, and a work box 2 protruding upward from the periphery is installed on the protruding base pillar 1 so as to be vertically movable along the base pillar 1.

FIG. 1 shows an example of a work box 2, in which a hanging beam 4 is provided at the upper end of a basket-like structure made of steel having a plurality of working stages 3 and 3 provided above and below. A center chain block 6 and a side chain block 7 are installed on the elevator guide 5 of the work box 2 and on the side thereof.

On the upper part of the work box 2, guide rails 8 for laterally moving the connecting column 1'joined to the foundation column 1 are parallel to the linear direction connecting the chain blocks 6, 7 at a required interval. The support moving roller 9 is slidably mounted on the guide rails 8 and 8, and the wires 10 'of the lever blocks 10 and 11 attached to the work box 2 are attached to the front and rear ends of the connecting column 1', respectively. 11 'are connected.

A connecting column 1'is placed on the ground near the work box 2 constructed in this way (FIG. 2), and is lifted higher than the foundation column 1 by the chain 7'of the side chain block 7 ( (FIGS. 3 and 4), the support moving roller 9 is fixed to the upper periphery thereof with a bolt or a fastening device,
The support moving roller 9 is pulled by the lever block 11 together with the connecting column 1 ′ and moved to just below the center chain block 6.

Before or after this movement, the chain 6'of the center chain block 6 is connected to the head of the connecting column body 1 ', and after the movement, it is supported by the chain 6'and the support moving roller 9 is removed to remove the connecting column. The body 1'is hung on the foundation column 1 and joined together as shown in FIG.

Next, as shown in FIG. 6, the work box 2 is raised above the connecting column 1 ', and a new connecting column 1'is hung up in the same manner as in the working process of the foundation column 1 and the preceding connection is made. It is joined and integrated on the pillar 1 '.

Such constructions are successively performed (see FIG. 7,
8) When the design height is reached, the work box 2 is lowered (FIG. 9) to complete the columnar body as shown in FIG.

11 and 12 show an example of a lifting device for the work box 2, in which the wire rope 12 connected to the chain 7'of the upper side chain block 7 of the work box 2 is attached to the lower part of the work box 2. The work box 2 is lifted by winding it around the pulley 13 and further connecting the tip thereof to the upper end of the base pillar 1 or the uppermost connecting pillar 1'and winding the wire rope 12 by the side chain block 7 in this state. Is configured to let.

13 and 14 show another example of the lifting device for the work box 2, in which the arm 14 is laterally projected on the upper end of the base column 1 or the uppermost connecting column 1 '. The chain 15 'of the lifting chain block 15 attached to the arm 14 is connected to the lower part of the work box 2, and the work box 2 is lifted by winding the chain 15' by the lifting chain block 15 to temporarily fix the pressure bolt or the like. It is configured to be temporarily fixed by the metal fitting 16.

Further, FIGS. 15 and 16 show an example in which the lifting device of the work box 2 is a hydraulic jack. The other end of the hydraulic jack 17 having one end connected to the work box 2 is attached to the pillar 1 or 1 '. The work box 2 is supported by being connected to the anchor 18 and the hydraulic jack 17 is extended to raise the work box 2 in this state.

In this state, the lifting guide portion 5 of the work box 2 is temporarily fixed to the pillar 1 or 1'to support the work box 2, and the other end of the hydraulic jack 17 is detached from the anchor 18 and contracted. After that, the same operation as above is repeated to raise the work box 2 intermittently.

The center chain block 6,
By using the side chain block 7, the guide rails 8 and 8 and the supporting and moving roller 9, the crane does not correspond to the law and the manufacturing permission of the crane and the completion inspection after installation are unnecessary.

Therefore, it is possible to shorten the period required for manufacturing permission when manufacturing the work box 2, and to shorten the period required for completion inspection at individual construction sites.

In the case of handling as a crane, one hoist which can move along the suspension beam 4 of the work box 2 is installed, and the connecting column 1'that is hoisted by the hoist is added to the foundation column 1 or the preceding column. You may make it move and join on the connection pillar 1 '.

[0021]

As described above, according to the present invention, it is possible to carry out construction without the need for a large crane having a high height, and as a result, it is possible to carry out construction even on an extremely small site, and also in mountainous areas or sloping land. In the case of construction in, it is possible to reduce the construction cost more than before.

[Brief description of drawings]

FIG. 1 is a front view showing an aspect of a work box used in the present invention.

FIG. 2 is a front view showing a construction aspect of the present invention.

FIG. 3 is a front view showing a construction aspect of the present invention.

FIG. 4 is a front view showing a construction aspect of the present invention.

FIG. 5 is a front view showing a construction aspect of the present invention.

FIG. 6 is a front view showing a construction aspect of the present invention.

FIG. 7 is a front view showing a construction aspect of the present invention.

FIG. 8 is a front view showing a construction aspect of the present invention.

FIG. 9 is a front view showing a construction mode of the present invention.

FIG. 10 is a front view showing a construction completion state of the present invention.

FIG. 11 is a front view showing a mode before raising in an example of a work box raising / lowering device according to the present invention.

FIG. 12 is a front view showing an example of a work box elevating device according to the present invention after being raised.

FIG. 13 is a front view showing a state before raising in another example of the lifting device for a work box according to the present invention.

FIG. 14 is a front view showing a state after raising in another example of the work box raising / lowering device according to the present invention.

FIG. 15 is a front view showing a mode before raising in still another example of the lifting device for a work box according to the present invention.

FIG. 16 is a front view showing a mode after ascending in still another example of the lifting device for a work box according to the present invention.

[Explanation of symbols]

 1 Foundation Pillar 1'Connecting Pillar 2 Work Box 3 Work Stage 4 Lifting Beam 5 Lift Guide 6 Center Chain Block 6'Chain 7 Side Chain Block 7'Chain 8 Guide Rail 9 Support Moving Roller 10 Chain Block 11 Chain Block 10 'Chain 11' Chain 12 Wire rope 13 Pulley 14 Arm 15 Lifting chain block 15 'Chain 16 Temporary fitting 17 Hydraulic jack 18 Anchor

Front Page Continuation (72) Inventor Katsuya Tanaka 1-8-3 Shimbashi, Minato-ku, Tokyo Within Nippon Concrete Industry Co., Ltd. In the company

Claims (1)

[Claims] 1. A work box projecting upward from its periphery is installed on a foundation pillar protruding above the ground from a stable and solid foundation so that the work box can be moved up and down along the foundation pillar, and the ground near the work box. Place the connection column on the connection column, and lift this connection column higher than the foundation column by the lifting device provided on the work box and move it onto the foundation column to join and integrate it, then place the work box on the connection column. A method for constructing a connection-type columnar body characterized by repeating the steps of raising and connecting a new connection columnar body by a lifting device and joining and integrating it with the preceding connection columnar body as in the previous period.