JPH0610378B2 - High-rise building construction method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a construction method of a high-rise building to which a sliding foam method is applied.

[Conventional technology]

The slip-form construction method (also called sliding construction method) has been widely known as a construction method for reinforced concrete buildings, but this type of construction method is used exclusively for construction of floor-less buildings on the middle floor such as large chimneys and silos. However, it has not been implemented in general buildings such as buildings and condominiums.

[Problems to be Solved by the Invention] On the other hand, the recent reinforced concrete work and steel-framed reinforced concrete work tend to have a longer construction period due to an increase in scale, and the construction cost tends to increase due to soaring personnel costs.

The present invention has been proposed in view of such circumstances, and an object thereof is to provide a construction method for a high-rise building capable of applying the sliding construction method to significantly reduce the construction cost and the construction period. To do.

[Means for solving problems]

The present invention relates to a slipform, which is mounted between upper and lower horizontal frames that rise along a steel frame guide column, and which is composed of a combination of a plurality of molds each having a convex curved surface portion continuous in the vertical direction, and slips the upper and lower horizontal frames. A rack having a hydraulic jack to be lifted together with the foam, the rack being continuously attached to the side surface of the guide column in the vertical direction thereof, and a drive device to be lifted by the action of the pinion that engages with the rack, Gradually increasing the slip form by engaging the pinion with a rack attached to the side surface of the guide column, and
By alternately placing concrete in slipform, a solid column with a concave surface in which the sides of reinforced concrete or steel-framed reinforced concrete are continuous vertically is formed, and between the columns Precast beams and precast or cast-in-place walls,
The above object is achieved by constructing a floor.

〔Example〕

Hereinafter, a construction method according to the present invention will be described with reference to an illustrated embodiment.

The slipform 1 used in this construction method is constructed by building four molds 3 and 3 between the upper and lower horizontal frames 2 and 2, and a drive device 4 is attached to the lower side of the slipform 1. . The slipform 1 is arranged together with the drive unit 4 on two guide columns 5 and 5 made of H-shaped steel standing upright on the side of the column position.
It is configured so as to be able to rise along (see FIGS. 1 and 2).

The upper and lower horizontal frames 2 and 2 are formed in a substantially square frame shape, and four molds 3 and 3 are fixed by rods 7 and 7 inside the respective corner portions of the upper and lower horizontal frames 2 and 2. .

The molds 3 and 3 are formed of a metal plate, a plywood or a hard plastic plate, and are entirely formed in a convex curved surface that bulges toward the center of the upper and lower horizontal frames 2 and continues in the up and down direction, that is, a substantially arc-shaped cross section. There is. As a result, a hollow portion 8 having a substantially cross-shaped cross section is formed in the central portion of the upper and lower horizontal frames 2 and 2, the hollow portion 8 having a substantially cross-shaped cross section, and the inner walls of the hollow portion 8 are curved. By being formed, it is formed in a curved shape.

Jacks 9 and 9 are attached to the drive unit 4, and rods 10 and 10 of the jacks 9 and 9 are connected to the horizontal frame 2 of the slipform 1. In addition, the drive unit 4 includes a pinion 11, 1 that is rotatable by power of a motor or the like.
1 is attached, and the pinions 11 and 11 are engaged with racks 12 and 12 that are continuously attached to the side surfaces of the guide columns 5 and 5 in the vertical direction of the guide column 5.

The drive unit 4 can be raised by the action of the pinion 11 and the rack 12, and the drive unit 4 can be appropriately fixed to the guide column 5 and the slip form 1 can be gradually raised by the action of the jack 9. It is configured. A plurality of guide rollers 13, 13 that can slide on the side surfaces of the guide columns 5 and 5 are attached to the upper and lower horizontal frames 2 and 2 of the slipform 1 so that the slipform 1 can be smoothly raised without lateral shake. .

Next, a method of constructing a reinforced concrete column and a method of constructing a high-rise building using this slipform 1 will be described.

First, two guide columns 5 and 5 are built, and the slipform 1 and the drive device 4 are installed on the guide columns 5 and 5.

Subsequently, the pillar reinforcing bars 14 assemble the cage 14 into the hollow portion 8 of the slipform 1 in a substantially cross shape.

Then, the concrete 15 is poured almost completely into the hollow portion 8 of the slipform 1 and cured for a certain period of time.

Then, when the concrete 15 in the hollow portion 8 exhibits some strength, the jacks 9 and 9 are operated to gradually push up the slip foam 1. Further, the drive device 4 also operates the pinions 11 and 11 to raise the slipform 1 by the amount of pushing up. Thereafter, the pushing up of the slipform 1 and the raising of the drive device 4 are repeated alternately to raise the slipform 1 and the drive device 4 by approximately the height of the slipform 1.

Then, the concrete 15 is poured almost completely into the hollow portion 8 which is hollowed by raising the slip foam 1, and is cured for a certain period. By alternately raising the slip foam 1 and placing concrete 15 in the hollow portion 8 by such a method, a solid cross-section having a substantially cross shape and a concave curved surface whose side surfaces are vertically continuous is formed. The reinforced concrete columns 16 are constructed over the entire height. The shape of the pillar is not limited to the cross shape, and various cross-sectional shapes can be obtained by changing the molds 3 and 3 (see FIGS. 12 to 14).

During construction, in order to provide the beam and wall joint recesses 6 (see FIG. 10) in the reinforced concrete columns 16, the rebars should be attached to the cage 14 with blocks such as wood chips and Styrofoam that can be easily removed after the concrete hardens. I shall. Further, the reinforcing bar cage 14 is to be assembled in parallel with the operation of placing the concrete 15.

A plurality of reinforced concrete columns 16 are configured by the construction methods of.

Next, in parallel with the construction of the reinforced concrete pillar 16, the beam 1 is provided between the reinforced concrete pillars 16 and 16 previously constructed.
7, wall 18 and floor slab 19 are constructed. The beam 17 is composed of a steel frame member or a precast concrete member, and the beam 17 is connected to the projecting portion on the side surface of the column. The walls 18 and floor slabs 19 are made of precast concrete members or cast-in-place concrete.

In the wall structure, the floor slab 19 may be provided at the upper end of the wall 18 without using the beam 17.

In the construction of this method, reinforced concrete columns 16,1
It is preferable to attach the beam 17 or the wall 18 to the upper floor between 6 and attach the rear floor slab 19 or concrete placing.

FIGS. 3 to 4 show a slipform for constructing a steel-framed reinforced concrete column 20, and a drive device 4 is attached to the upper side of the slipform 1.

Further, instead of installing the two guide columns, the steel aggregate 21 in the columns is used as the guide columns, and the construction and operation of the slipform 1 and the driving device 4 and the method of constructing the columns are performed by jacking the slipform 1 into the jacks 9, 9. It is almost the same as the case of the first embodiment except that it is pulled up and raised.

In the figure, reference numerals 2 and 2 are upper and lower horizontal frames, 3 and 3 are formwork,
7 and 7 are rods, 9 and 9 are jacks, 10 and 10 are rods, 11 and 11 are pinions, 12 and 12 are racks, 1
3 and 13 are guide rollers 15, and the guide roller 15 is concrete.

Further, FIGS. 6 to 8 show a slipform for constructing the steel-framed reinforced concrete column 20 as well, in which the formwork 3, 3 of the slipform 1 is formed by an air tube having a substantially cylindrical cross section, and others. The construction and operation of and the construction method of the pillar are the slip form 1 jack 9,
It is almost the same as the case of the first embodiment except that it is pulled up at 9 and raised.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

According to the construction method of the present invention, the plurality of slipforms having the convex curved surface portions are surely arranged between the upper and lower horizontal frames along the steel guide column, and the upper and lower horizontal frames and the slipforms are attached to the drive device. The lifting of the drive device is performed by the action of a rack that is continuously attached to the side surface of the steel guide column in the vertical direction and a pinion that engages with this rack. As a result, it is possible to engage the pinion with the rack mounted on the side of the guide column to gradually raise the slipform, and to pour concrete into the slipform, and it is extremely efficient. Can do well,
Therefore, there is an effect that the construction efficiency is further improved, the construction cost is significantly reduced, and the construction period is significantly shortened.

In addition, if the steel guide columns are installed continuously up to the top floor of the high-rise building where it is going to be constructed, construction can be continued up to the top floor. If it is possible to support the frame and slip form, when placing concrete in the slip form, it is not necessary to fix the drive device to the steel guide strut, so that the drive device is fixed to the guide strut, Since the work of releasing the fixing is eliminated, the construction efficiency is further improved.

In addition, a solid pillar whose side surface is a concave curved surface is formed, and the protruding portion of the pillar has a shape close to the beam width to facilitate force transmission and assembly work. It has the effect that it can be changed.

[Brief description of drawings]

1 to 8 show a slip foam used in the construction method of the present invention. FIG. 1 is a plan view of the slip foam, FIG. 2 is a side view thereof, and FIG. Of FIG. 4, FIG. 4 is a side view thereof, FIG. 5 is a sectional view taken along the line AA in FIG. 4, FIG. 6 is a plan view of a slip form in the same manner, FIG. 7 is a side view thereof, and FIG. Is the 7th
A sectional view taken along the line AA in FIG. 9, FIG. 10, FIG.
The figure is a plan view and a side view showing the construction method of the present invention,
FIG. 13, FIG. 13 and FIG. 14 are sectional views of reinforced concrete columns. 1 ... Slip foam, 2 ... Upper / lower horizontal frame, 3 ...
Formwork, 4 ... Driving device, 5 ... Guide column, 6 ... Recess for joining,
7 ... Rod, 8 ... Hollow part, 9 ... Jack, 10 ... Rod, 11 ... Pinion, 12 ... Rack, 13 ... Guide roller, 14 ... Reinforcing cage, 15 ... Concrete, 16 ... Reinforced concrete pillar, 17 ... Beam, 18 ... Walls, 19 ... Floor slabs, 20 ... Steel reinforced concrete columns.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiyuki Kawazoe 3-4-5 Toyosu, Koto-ku, Tokyo Inside Toyosu Plant of Tomoe Corp. (56) References JP-A-56-150244 (JP, A) JP 59-65162 (JP, A) JP 45-31587 (JP, B1) JP 36-22782 (JP, B1) JP 51-12171 (JP, B2)

Claims (1)

[Claims] 1. A slip form, which is mounted between upper and lower horizontal frames rising along a steel frame guide column, and which is composed of a combination of a plurality of molds having convex curved surface portions continuous in the vertical direction, and the upper and lower horizontal frames. A rack having a hydraulic jack to be lifted together with the slipform, the rack being continuously attached to the side surface of the steel frame guide column in the vertical direction, and a drive device being lifted by the action of a pinion engaged with the rack. By alternately engaging the pinion with a rack attached to the side surface of the guide column and gradually raising the slip form, and placing concrete in the slip form. A reinforced concrete or steel-framed reinforced concrete side wall with a concave curved surface that is continuous vertically A construction method of a high-rise building characterized by constructing precast beams and precast or cast-in-place walls and floors between a plurality of columns that are constructed and constructed.