JP2874830B2 - Push-up method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-up method for constructing a large-scale steel building.

[0002]

2. Description of the Related Art The push-up method is well known, and is often used to shorten the construction period.

[0003]

In the conventional push-up method, the floor to be pushed up is constructed by performing a frame work, an equipment work, and a finishing work in order below the floor that has been pushed up, and then performing the push-up. ing.

[0004] Therefore, especially in the framing work, since the lifting work is performed in a narrow space, the workability is poor. Also, since each work is performed in series, the cycle time of push-up becomes longer.

[0005] It is an object of the present invention to provide a push-up method for improving the workability of skeleton construction and shortening the recycle time of push-up.

[0006]

According to the construction method of the present invention, a push-up gantry assembling process for assembling a push-up gantry, a top floor erection process for constructing a top floor, and pushing the top floor with the push-up gantry. The first push-up process to raise, the top floor that was pushed up is supported by a push-up stand with kanuki, the top floor support process to jack down, and the next on the bogie at the temporary construction site outside the work floor The center span building process is to carry out the frame work for each block of the center span of the floor, move to the work floor, and perform the equipment work and the finishing work in order from the inside to the completion of the movement, and the outer span from the side. After completing the outer span building process to build the center span and the outer span with a trolley, and combining the top floor and the next floor, A yoke releasing step of dividing, and a second time push-up to push up the entire top floor and Tsugikai is characterized by repeating the same steps until the bottom floor below.

[0007]

In the present invention, the skeleton work can be performed with good workability by using a crane or the like at a temporary ground site on the top floor under the open pit and the next floor under the open pit.

In the next floor, since skeletal construction, facility construction and finishing construction are performed while sliding, the cycle time of push-up is shortened.

[0009]

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

FIG. 1 is a plan view of a reference floor to be constructed. The steel frame 1 on the reference floor has a plurality of inner pillars 2a to 2e.
(Hereinafter, reference numeral 2 is used when collectively referred to), a plurality of beams 3a to 3e connecting these inner columns 2 (hereinafter, reference numeral 3 is used when collectively referred to), and a plurality of beams 4a to 4d (hereinafter collectively referred to as Uses a symbol 4).
And a plurality of outer pillars 5a to 5e (hereinafter collectively referred to as 5
) And a plurality of beams 6 a to 6 e connecting these outer pillars 5 to the inner pillar 2 (the reference numeral 6 will be used when collectively referred to below).
And a plurality of beams 7a to 7d (hereinafter referred to as a reference numeral 7 when collectively referred to) and outer spans 1B and 1B assembled to the center span 1A.

(1) Push-up gantry assembly process (FIG. 2).

At a predetermined location on the work floor A, the entirety is denoted by reference numeral 10.
Assemble the push-up stand shown by. This stand 10
The gantry 11 includes a gantry 11 having four columns, a plurality of cannus 12 provided on the top of the gantry 11 and capable of protruding laterally, and a jack 13 erected on the center line of the gantry 10. . In the drawings, reference numerals 2A and 5A denote inner pillars and outer pillars corresponding to the inner pillar 2 and the outer pillar 5, respectively, S denotes a spacer, 15
Is a rail for the truck 16 for the center span described later.

(2) Top floor construction process (FIG. 3).

The main waterproof construction of the roof R and the steel frame construction of the top floor B consisting of the floors R-1 and R-2 is performed.

(3) First push-up step (FIG. 4).

The jack 13 is lifted, and the top floor B is pushed up.

(4) Top floor support step (FIG. 5).

The top floor B is supported by projecting the cannus 12 and the jack 13 is lowered.

(5) Central span building process (FIGS. 6 to 11) At the temporary construction site C on the outer side in the longitudinal direction of the work floor A, the center span truck 1 moving on the rails 15, 15
6, the crane 17 is used to lay the steel frame of the first block D1 of the first block D1 of the center span 1A of the next floor B1 composed of the floor portions R3 and R4 and lay the deck plate floor 18 (FIG. 10), that is, erection work E1. Perform construction (FIGS. 6 and 7).

Then, the carriage 16 is moved toward the work floor A by one block, and the skeleton work E1 of the next second block D2 is moved.
And the facility work E2 in the ceiling is performed on the first block D1 (FIGS. 8 and 9).

Next, the carriage 16 is sequentially moved to the work floor A1 by one block, and the finishing work E3 is moved to the first block D1.
Is applied to the second and third blocks D2 and D3 (FIG. 10).

The carriage 16 moves as described above,
When the fourth blocks D1 to D4 enter the work floor A, all the constructions E1 to E3 are substantially completed for all the blocks D1 to D4 (FIG. 11).

(6) Outer span setting step (FIGS. 12 and 9).

A rail 19 orthogonal to the rails 15, 15
The crane 1 is placed on the outer span trolley 20 moving on
7, the steel frame of the first block F1 of the outer span B1 is laid, and a deck plate is laid. Then, the carriage 20 is moved to place the first block F1 on the jack 13 and connected to the center span 1A. The jack 13 is slightly jacked up, and the pillars 5a, 5b, 6 of the top floor B and the next floor B1 are respectively.
a and 6b are fixed by welding.

(7) Canceling step (FIG. 13).

The free Kannuki 12 is moved to the digit side and released.

(8) Second push-up step (FIG. 1)
4).

The jack 13 is lifted up and the top floor B
And the second push-up of the next floor B1 is performed.

Thereafter, the outer wall 21 (FIG. 9) is mounted while repeating the steps (5) from the center span building step to (8) the second push-up step to the lowest floor, and is completed.

[0030]

As described above, according to the present invention, the workability of the skeleton work is improved by the crane under the open-air, and the skeleton work, the equipment work and the finish work are performed while sliding on the next floor. The cycle time of push-up can be shortened.

[Brief description of the drawings]

FIG. 1 is a floor plan of a reference floor to be constructed.

FIG. 2 is a side view illustrating a push-up gantry assembling process.

FIG. 3 is a side view illustrating a top floor construction process.

FIG. 4 is a side view illustrating a first push-up step.

FIG. 5 is a side view illustrating a top floor support step.

FIG. 6 is a plan view for explaining a first block steel frame construction method and the like in a center span construction process.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a plan view illustrating a second block steel frame construction method and the like in the center span construction process.

FIG. 9 is a perspective view of FIG. 8;

FIG. 10 is a front view illustrating the progress of the center span setting process.

FIG. 11 is a side view illustrating the final state of the center span setting step.

FIG. 12 is a side view illustrating an outer span setting step.

FIG. 13 is a side view for explaining a kanuki releasing step.

FIG. 14 is a side view illustrating a second push-up step.

[Explanation of symbols]

 A: Work floor B: Top floor B1: Next floor C: Temporary site construction site D1, D2: Block E1: Frame work E2: Facility work E3: Finish Construction F1, F2 ... Block R ... Roof R1, R2 ... Floor S ... Spacer 1 ... Steel frame 1A ... Central span 1B ... Outer span 2 ... Inner pillar 3 , 4, 6, 7 ... Beam 5 ... Outer pillar 10 ... Push-up stand 11 ... Stand 12 ... Kannuki 13 ... Jack 14 ... Temporary pillar 15, 19 ... Rail 16: Truck for central span 17: Crane 18: Deck plate 20: Truck for outer span 21: Outer wall

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hideki Ikeda 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Akio Tomita 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Yukimasa Ogihara 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Mitsuhisa Owaki 1-2-2 Moto-Akasaka, Minato-ku, Tokyo 7 Kashima Construction Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) E04B 1/35 E04G 21/14

Claims (1)

(57) [Claims] 1. A push-up gantry assembly process for assembling a push-up gantry, a top floor erection process for constructing a top floor, and a first push-up process for pushing up the top floor with the push-up gantry. The top floor that has been pushed up is supported by a push-up stand with a kanuki and the top floor support process of jacking down, and a frame of one block of the center span of the next floor on a bogie at a temporary construction site outside the work floor Central span building process where construction work is carried out to the work floor and equipment and finishing work is completed in order from the inside to the completion of the movement, and outer span construction where the outer span is built from the side with a trolley to the center span After completing the installation of the center span and the outer span, combining the top floor and the next floor to release the kanuki, And a second push-up for pushing up the entire next floor, and thereafter repeating the same steps up to the lowest floor.