JPH09203494A - Method of build-up of table top structure body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of building up a table top structure body, which can shorten the construction period. SOLUTION: An actuator means 40 formed of a bag so as to expand or contract in accordance with a supply of fluid, enables a support member 30 elevatably provided to a support leg 10 to move up and down, and a concrete floor panel 20 manufactured separately from the support leg 10, is set on the support leg 10 through the intermediary of the actuator means 40, and the support member 30 is elevated in association with the operation of the actuator means 40, so as to adjust the horizontal level of the concrete floor panel 20. Thereafter, the support leg 10 and the concrete floor panel 20 are coupled to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a tabletop structure including a concrete floorboard and a plurality of support legs.

[0002]

2. Description of the Related Art For example, equipment such as a compressor in a plant facility is mounted on a table top structure T having an external appearance as shown in FIG. The tabletop structure T is a concrete structure with a height of about 4 m above the ground,
It comprises a concrete floor Ts for mounting equipment such as a compressor, and a plurality of support legs Tp, Tp ... Supporting the concrete floor Ts.

[0003]

By the way, in the above-mentioned table top structure T, the piles of the ground G, the foundation work, and the construction of the support legs (concrete columns) Tp, Tp ...
In addition, form support for concrete floor Ts, rebar work,
Moreover, many steps were required for the construction work such as concrete pouring, and a long construction period was required from the start of the foundation work to the completion of the installation of the equipment. Further, in the above-mentioned table top structure T, it is desired to construct the concrete floor Ts horizontally in order to stably operate the devices such as the compressor. However, the concrete floor Ts is supported by the support legs Tp, Tp. Because it is built as one with ...
In order to secure the horizontal level of the concrete floor board Ts, fine adjustment work is required in each process of construction, and complicated work for a long period of time has been forced. The purpose of the present invention is
In view of the above-mentioned circumstances, it is an object of the present invention to provide a method for constructing a tabletop structure that can achieve a shortened construction period as much as possible and can easily adjust the horizontal level of a concrete floorboard.

[0004]

In the method of constructing a tabletop structure according to the present invention, a support member is provided on a support leg erected on the ground so as to be vertically movable, and further, a strength capable of supporting the weight of a concrete floor. A concrete floorboard manufactured separately from the support legs is provided with an actuator means for expanding and contracting based on the amount of fluid supplied to the inside of the bladder to move the support member up and down. After placing it on the support leg via the means, the horizontal level of the concrete floor is adjusted by raising and lowering the support member based on the operation of the actuator means, and then the support leg and the concrete floor are connected to each other. There is.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments. 1 to 4
1 shows an example in which a tabletop structure (hereinafter referred to as a tabletop) for mounting a large compressor for plant equipment is constructed by a construction method according to the present invention.

As shown in FIGS. 1 and 2, the table top 1 according to the present invention is supported by six support legs 10, 10 ... Built on the ground G and these support legs 10, 10. A concrete floorboard 20 is provided.

As shown in FIGS. 3 and 4, each support leg 10 is a hollow pillar member, and specifically, a foundation pile made of steel pipe is driven into the ground G and exposed to the ground in the foundation pile. It is composed of parts. The support leg 10 can be formed not only by a part of the foundation pile made of steel pipe but also by a steel pipe column built on a foundation built in the ground.

A support member 30 and an actuator means 40 are housed in the upper portion of the inside of the support leg 10, and the actuator means 40 is mounted on a support plate 11 fixedly mounted on the support leg 10. Further, the support member 30 is mounted on the actuator means 40.

The support member 30 includes a disk-shaped base plate 31 and columns 32 that stand upright on the base plate 31.
And a contact plate 33 provided on the upper end of the column 32, and is accommodated in the support leg 10 so as to be vertically movable.

Further, the columns 32 of the support member 30 are
A guide hole 12 of a top plate 12 fixed to the upper end of the support leg 10.
a through, and the upper part of the support column 32 and the contact plate 33 are
It is exposed above the support leg 10.

The actuator means 40 is, for example, a bladder made of a pressure-resistant rubber material, expands by supplying water as a pressurized fluid to the inside, and the amount of water supplied (pressure).
Based on the above, the supporting member 30 is expanded / contracted and deformed, and has sufficient strength to support the weight of the concrete floorboard 20. By expanding / contracting and deforming as described above, the supporting member 30 is moved up and down.

When the table top 1 to be described later is constructed, a tube 51 extending from the water supply pump 50 is connected to the actuator means 40, and a pressure monitor 52 is attached to the tube 51.

On the other hand, the concrete floorboard 20 is a slab made of precast concrete, and is manufactured separately from the above-mentioned support legs 10, 10 ... And the bottom surface thereof has six support legs 10, 10. .. are respectively provided at positions corresponding to ..

The connecting concave portion 21 has a size capable of accommodating the upper end portion of the support leg 10, and for the purpose of preventing concrete damage, a top plate 21A made of a disc-shaped steel plate and a peripheral wall made of a steel pipe. 21B and 21B.

An injection pipe 22 for supplying grout (cement paste, mortar, etc.) 100 to the recess 21 for connecting the concrete floor 20 communicates the upper surface of the concrete floor 20 with the recess 21 for connecting. Is provided.

Further, the support leg 10 and the concrete floor 20 are connected to each other by a grout 100 filled in a gap between the connection recess 21 and the support leg 10 fitted in the connection recess 21. .

In order to construct the table top 1 having the above-described structure, first, a foundation pile made of a steel pipe is driven, six support legs 10, 10, ... Are built on the ground G, and then the support leg 1 is formed.
The support plate 11 is welded and fixed to the inside of 0.

After this, the actuator means 40 is placed on the support plate 11 and the actuator means 4
Connect the tube 51 extending from the water supply pump 50 to 0,
Further, the supporting member 30 is placed on the actuator means 40, and the end plate 12 is welded and fixed to the upper portion of the supporting leg 10.

Then, the separately manufactured concrete floorboard 20 is lifted by a crane, and the upper end portions of the respective support legs 10, 10 ... Are fitted into the respective coupling recesses 21, 21 ... In the concrete floorboard 20. , Coupling recess 21
The top plate 21A constituting the above is fitted with the contact plate 33 of the support member 30, and the concrete floor board 20 is placed on each of the support legs 10, 10 ,. That is, the concrete floorboard 20 is placed on each of the support legs 10, 10, ... Through the support member 30 and the actuator means 40.

After that, the water supply pump 50 is attached to the actuator means 40, 40 ... Installed on the support legs 10, 10 ... Via appropriate pressure adjusting means (not shown).
To supply water under pressure.

Here, the concrete floor 20 is 125 tons.
Since one support leg 10 bears a load of about 21 tons, the actuator means (bag) 40 accommodated in the support leg 10 made of a steel pipe having an inner diameter of 600 mm is 40
Is in equilibrium at an internal pressure of about 7.5 kg / cm ² .

Therefore, by increasing / decreasing the water supply amount (supply pressure) by the water supply pump 50, the internal pressure from the equilibrium state is increased / decreased, and the actuator means 40 is expanded / contracted and deformed. The concrete floor board 20 moves up and down. The supporting column 32 of the supporting member 30 is a steel pipe having an outer diameter of 100 mm and a wall thickness of 6 mm, and can sufficiently support a load of about 21 tons acting on one supporting leg 10.

The internal pressure of each actuator means 40 installed on each support leg 10 is monitored by a pressure monitor 52 attached to a tube 51 extending from the water supply pump 50, and the load distribution is controlled for each support leg 10, 10. The horizontal level of the concrete floorboard 20 is adjusted by moving up and down the support members 30, 30 ... Installed on the respective support legs 10, 10.
At this time, the horizontal level of the concrete floorboard 20 is monitored using, for example, a well-known laser level.

Here, the internal pressure of each actuator means 40 is increased / decreased, each support member 30 is moved up and down, and a plurality of fulcrums with respect to the concrete floor 20 are moved up and down, whereby the inclination of the concrete floor 20 is increased. As the aspect changes, this adjusts the horizontal level of the concrete floor 20. That is, by increasing / decreasing the internal pressure of each actuator means 40, it becomes possible to easily adjust the horizontal level in the concrete floorboard 20.

After the adjustment of the horizontal level of the concrete floorboard 20 is completed, the holding recesses 21, 21, ...
The grout 100 is poured into the gaps between the support legs 10 and 10 ... through the injection pipes 22 and 22. At this time, in the gap between the accommodation recess 21 and the support leg 10,
It goes without saying that the region opened downward is closed in advance by an appropriate means such as a ring with a collar.

After that, after waiting for the grout 100 to harden, the support legs 10, 10 ... And the concrete floor 20 are joined to each other, and the table top 1 is completed. The tubes 51 connected to the respective actuator means 40, 40 ... Are removed at an appropriate time that does not affect the horizontal level of the concrete floor 20.

According to the above-described construction method, the separately manufactured concrete floor is placed on the plurality of support legs built up on the ground to construct the table top structure, whereby the construction period of the construction is improved. Can be shortened as much as possible, and the horizontal level of the concrete floor can be easily adjusted by elevating and lowering the support member based on the operation of the actuator means as described above.

In the above embodiment, the water as the pressurized fluid is supplied to the actuator means 40 by the water supply pump 50.
Although air is supplied under pressure, it is of course possible to use air as the pressurized fluid. When air is used as the pressurized fluid, an air supply pump or an air cylinder is used as the pressurized fluid source. It is possible.

Further, in the above-mentioned embodiment, an example in which a table top structure for mounting a large compressor as a plant device is constructed by the construction method according to the present invention is shown. Not only as a tabletop structure for mounting, but also as a method for constructing a tabletop structure for mounting various devices in various industrial fields, or a tabletop structure for other purposes It goes without saying that it can be effectively applied.

[0030]

As described above in detail, in the method of constructing the tabletop structure according to the present invention, the supporting members erected on the ground are provided with the supporting members movably up and down, and the weight of the concrete floor is reduced. A concrete floorboard, which is a sac with sufficient strength to support, is provided with actuator means for expanding and contracting based on the amount of fluid supplied to the inside to move the supporting member up and down, and is manufactured separately from the supporting legs. After mounting on the support leg via the support member and the actuator means,
The horizontal level of the concrete floor is adjusted by raising and lowering the support member based on the operation of the actuator means, and then the support leg and the concrete floor are connected to each other. According to such a method of constructing a tabletop structure, a plurality of support legs erected on the ground,
Since the separately manufactured concrete floor is placed to build the tabletop structure, and the horizontal level of the concrete floor can be easily adjusted based on the operation of the actuator means, from the start of the foundation work. It is possible to significantly reduce the construction period until the installation of devices is completed compared to the conventional construction method.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a tabletop structure constructed by a construction method according to the present invention.

FIG. 2 is an exploded perspective view of a tabletop structure constructed by a construction method according to the present invention.

FIG. 3 is an exploded perspective view showing a connection portion between a concrete floorboard and a support leg in the tabletop structure.

FIG. 4 is a perspective view of a main part showing a combined state of a concrete floorboard and a support leg of a tabletop structure constructed by a construction method according to the present invention.

FIG. 5 is an overall perspective view showing a tabletop structure constructed by a conventional construction method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tabletop structure, 10 ... Support leg, 20 ... Concrete floor board, 30 ... Support member, 40 ... Actuator means (bag).

Front page continued (72) Inventor Yutaka Terauchi 1-14-1 Minami-Branch Place, Yokohama City, Kanagawa JGC Corporation Yokohama Office (72) Inventor Masaaki Hanaoka 1-1-14 Minami-Branch Place, Yokohama City, Kanagawa Prefecture JGC Corporation Yokohama Office

Claims (1)

[Claims] 1. A method of constructing a table top structure comprising a concrete floor for mounting equipment, and a plurality of support legs erected on the ground to support the concrete floor. A supporting member is provided on the supporting leg so as to be vertically movable, and is composed of a bladder having a strength capable of supporting the weight of the concrete floor, and the supporting member is expanded and contracted based on the amount of fluid supplied to the inside of the supporting member. An actuator means for moving up and down is provided, and the concrete floorboard manufactured separately from the support leg is placed on the support leg via the support member and the actuator means, and then based on the operation of the actuator means. After elevating and lowering the support member and adjusting the horizontal level in the concrete floor, the support legs and the concrete floor are connected to each other. Method for constructing a table top structure characterized.