JPH10115090A - Climb form construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently elevate a form in safe circumstances by providing a climb ram on an outside working floor and a long stroke jack at the lower part of an inside working floor and arranging an outside form and an inside form on the respective working floors. SOLUTION: An outside form 21 is suspended on an outside working floor 2 with a climb ram 23 and a roller 8 and a working floor supporting pin 7 is provided inside the lower end thereof. A bracing material is provided at the lower end of an inside working floor 3b integrally formed with a rod for a rod jack supported on an upward lateral beam. A long stroke jack is provided under the inside working floor 3b, which has the lower end pushed against a supporting material for elevation. A pair of inside forms 31 are suspended under the respective inside working floors 3a, 3b to be laterally movable. An inside working floor 3c is formed to be suspended on the lateral beam via which the outside working floors 2 are connected together, and the inside form 31 are suspended at both ends of the upper working floor. In this way, there is no sectional defect in a concrete wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a climb form method suitable for efficiently constructing a tower structure.

[0002]

2. Description of the Related Art The ascending formwork method is a method of constructing a tower-like structure efficiently by continuously or concretely pouring concrete while sliding a formwork upward.

FIG. 10 shows a mechanism for carrying out such a lifting formwork method. The opposing form panels 104, 104 are supported by a frame of a yoke 103, and concrete 102 is poured into the form panels 104, 104 while the yoke 103 is continuously raised.

[0004] Also, the rod 10 is
8 is buried, and the yoke 103
By mounting the lifting jack 106 fixed to the horizontal member 109, the yoke 103 and the yoke 10
3 and a work floor (not shown) provided thereon.
And the lifting jack 106 pushes up the rod 108 like a measuring insect, so that the yoke 103 and the upper beam 10
5 and the work floor can be raised.

[0005]

However, the above-mentioned conventional methods have the following problems. In order to prevent expensive rods from being buried in the cast concrete structure, it is necessary to change the rods at predetermined heights. A void portion of the rod is generated in the cast concrete structure, resulting in a section loss and a quality problem. In order to reinforce the above-mentioned voids, a work of filling concrete or the like is required. A separate work floor (or scaffold) is required for rebar assembly work and the like. When the rebar assembled beforehand on the ground is moved to a predetermined place, the frame of the yoke hinders the work using the prefabricated rebar. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide a climbing method capable of safely and efficiently raising a formwork.

[0006]

A climb form method characterized in that an external work floor provided with an outer formwork and an internal work floor provided with an inner formwork are individually movable devices. Also, the inner working floor is a climb form method characterized by being movable together with the outer working floor, and the outer working floor is a climb form method characterized by being movable by a climb ram and a piston,
Also, a climb form method in which work floor support pins are provided on the outer work floor and the inner work floor, and the outer work floor and the inner work floor can be detached and moved when the ascending and descending work is performed. In addition, it is a climb form method characterized by providing a pocket, a climb form method characterized by providing a bracket on a concrete wall, and the internal work floor is a long stroke jack, or It is a climb form method characterized by the fact that it can move independently by the expansion and contraction of the rod jack.
This is a climb form method characterized by attaching an inner mold that can move laterally.

[0007]

Embodiment 1 Embodiments of the present invention will be described below with reference to the drawings.

<A> Overall Configuration FIG. 1 is a side view showing the overall configuration of a form lifting device 1 according to the present invention. The formwork lifting device 1 includes an external work floor 2 that holds an outer formwork 21 and an internal workfloor 3 that holds an inner formwork 31.
It is composed of

<B> External Work Floor FIG. 2 is a side view showing only the external work floor 2 taken out.
The external work floor 2 is configured as a box-shaped continuous body such as a polygon or a circle in plan view. (The same applies to an internal work floor described later.) A climb ram 23 having a piston 22 built therein is provided via a jack 24 at an upper end projecting portion of the external work floor 2. The jack 24 is fixed to the cross beam 9 connecting the external work floors 2 to each other. An outer frame 21 is hung by an arbitrary method at an inner end of the upper work floor 25 of the external work floor 2. The external work floor 2 includes the upper work floor 2
5 and the middle work floor 2
6. A lower working floor 27 is provided. Lower work floor 27
A roller 8 serving as a guide and a work floor support pin 7 for holding the external work floor 2 are provided at the inner end portion when the entire external work floor 2 rises.

<C> Internal Working Floor FIG. 3 is a side view showing only the internal working floor 3.
In FIG. 3, the structure of the three internal working floors 3 is different from each other in the case of three internal working floors (3a, 3b, 3c) having different structures, which are actually adopted. In this case, these three may be used in combination, or only one of them may be employed. Hereinafter, three types of internal working floors having different structures will be described.
(In the following description, the same members are denoted by the same reference numerals.)

The structure in the case of the internal work floor 3a will be described. The inner working floor 3a is a rod 3 of a telescopic rod jack supported by a cross beam (not shown) provided above the inner working floor 3a.
2 and the inner working floor 3a integrated with the rod 32 and a steady rest 33 horizontally installed at the lower end of the rod 32. Below the internal work floor 3a, a pair of inner mold frames 31 are suspended so as to be laterally movable via rollers (not shown) provided in the internal work floor 3a.
Rollers 8 serving as guides when the internal work floor 3a rises are provided at both ends of the steady rest 33.

The structure in the case of the internal work floor 3b will be described. A long stroke jack 34 is provided vertically below the internal work floor 3b. At the tip end (lower end) of the long stroke jack 34, two vertically arranged support members 35, 35 are provided at upper and lower stages at a predetermined interval. At both ends of the support members 35, 35, work floor support pins 7 which engage with pockets 6 described later are provided, and when the long stroke jack 34 is extended, the support members 35 are provided.
Plays a role of receiving the reaction force. Similarly to the internal work floor 3a, a pair of inner molds 31 are provided below the internal work floor 3b.
However, it is suspended so that it can move laterally.

The structure in the case of the internal work floor 3c will be described. The internal working floor 3c is different from the internal working floors 3a and 3b in that it does not have a function of independently raising and lowering. That is, the internal work floor 3c moves together with the rise and fall of the external work floor 2, and is suspended from the cross beam 9 connecting the external work floors 2 via the suspension members 36. The inner working floor 3c is provided with an upper working floor 38, a middle working floor 39, and a lower working floor 40, similarly to the outer working floor 2. The upper working floor 38 connects the middle working floor 39 and the lower working floor 40 via another connecting member 37, and the inner formwork 31 is connected to both ends of the upper working floor 38 by an arbitrary method. Is attached. The middle working floor 39 has a role as a spacing member for the inner formwork 31 in addition to a role as a working floor.

[0014]

The construction method of the climb foam method according to the present invention will be described below in the order of construction.

<Elevation of External Work Floor> FIG. 4 is a side view when the external work floor 2 is raised. The external work floor 2 is pushed up by applying the piston 22 of the climb ram 23 to the top end of the concrete wall 5 cast in the previous stage. At this time, the work floor support pin 7 which has been locked in the pocket 6 of the concrete wall 5 has a spring structure built in at its tip,
Since the outer working floor 2 does not bend upward but bends downward, the external work floor 2 is automatically removed from the pocket 6 when it rises. When the external work floor 2 rises, the rollers 8 serving as a guide for raising the external work floor 2 rotate and rise along the concrete wall 5 cast in the previous stage. Simultaneously with the rise of the external work floor, as described above, the internal work floor 3c also rises.

<Fixing of External Work Floor> When the external work floor 2 has been lifted, the work floor support pins 7 provided on the lower work floor 27 shown in FIG. 2 are provided on the concrete wall 5 which has already been cast. Automatically inserted into the pocket 6. The work floor support pins 7 can be inserted by any method such as manual or automatic.

<Cleaning of outer and inner molds, oil application> FIG.
, The outer formwork 21 of the outer working floor 2 and the inner working floor 3
At the time when the rise of the inner mold frame 31 in c is completed, the outer mold frame 21 and the inner mold frame 31 are cleaned and oil applied. In this state, since the other internal working floors 3a and 3b have not been raised yet, the worker can work on the internal working floors 3a and 3b in a safe environment without a fear of falling. Cleaning of the formwork 31, oil application work, and the like can be performed.

<Assembly of reinforcing bar> The assembling operation of the reinforcing bar according to the present invention can be carried out by appropriately selecting the following three patterns.

<A> Standard Form In FIG. 5, after the inner formwork 31 of the inner working floor 3c is raised to a predetermined height and fixed, the rebar assembling work is performed on the inner working floors 3a and 3b.

<B> Prefab Form In the climb form method according to the present invention, it is also possible to use a so-called prefabricated reinforcing bar in which a reinforcing bar previously assembled on the ground is moved to a predetermined place by a crane.
In this case, the space ratio above the internal work floor 3 has a great effect on the workability. FIG. 6 shows a plan view of FIG. 5, and on the internal work floors 3a, 3b, 3c, cross beams 9 connecting the external work floors 1 lower the above-mentioned space ratio and crane the prefabricated rebar. , A little hindrance when moving to a predetermined place.
Although the case where the internal working floors 3a, 3b, 3c are used at the same time is shown here, as described above, these internal working floors can be used independently. FIG. 7 is a plan view showing a case where the cross beam 9 which is an obstacle is removed.
Compared to the above, the head space ratio is greatly improved. In this case, the internal work floor used is the internal work floor 3b which does not need the cross beam 9 and can be raised independently. FIG.
2 shows a plan view when the climb ram 23 is installed outside the external work floor 1, and the work floor support pins 7 are supported by brackets (11 in FIG. 9) provided outside the concrete wall 5. , The upper space ratio becomes 100%, and the workability by the prefabricated reinforcing bar is remarkably improved.

<C> Form removal form This is a form in which the work space of the standard form is further widened, and the work of assembling the rebar is performed on the work floor.
In FIG. 5, all of the outer formwork 21 and the inner formwork 31 are removed by a crane, and a worker transfers rebar from both the work floors of the external work floor 2 and the internal work floor 3, and rebar assembly work facing each other. Format. According to this form, the work can be efficiently performed on the work floor even in the case of assembling a reinforcing bar of a structure having a large wall thickness, or even in the case of assembling a reinforcing bar in a dense state.

<Elevation and Fixation of the Internal Work Floor> As described above, the structure of the internal work floor 3 can be of three types as shown in FIG. 3, but in the case of the internal work floor 3c, the external work is performed as described above. Since it moves up and down together with the floor 2, the case of the internal work floors 3a and 3b will be described here with reference to FIG. As described above, the internal work floor 3a is provided with the cross beams 9 provided above the internal work floor 3a.
Rod jack 32 of telescopic rod jack supported on
And an inner working floor 3a integrated with the rod 32 and a steady rest 33 horizontally installed at the lower end of the rod 32. When raising and fixing the internal work floor 3a,
The rod 32 of the rod jack is contracted, and the entire inner working floor 3a is raised. When the inner working floor 3a reaches the concrete wall 5 already placed, the inner working floor 3a is
Support and fix at the top of. At this time, the roller 8 at the end of the anti-sway member 33 rises without being inclined along the concrete wall 5 already placed. Elevating and fixing the internal work floor 3b In the case of the internal work floor 3b, the long stroke jack 34 is supported by the support member 35 engaged with the pocket 6 as a fulcrum.
Is extended. With the extension of the long stroke jack 34, the work floor support pin 7 at the tip of the upper support member 35 is automatically disengaged from the pocket 6, and the internal work floor 3b is raised. When the internal work floor 3b rises to a predetermined position, the work floor support pin 7 at the tip of the above-mentioned upper support member 35 automatically engages with the pocket 6 provided at a higher position, and the internal work floor 3b is moved. It is fixed at a predetermined position.

<Movement of Inner Formwork> In FIG. 4, after the internal work floor 3 is set at a predetermined position, the inner formwork 31 is moved laterally. The inner frame 31 suspended from a roller (not shown) built in the top end of the internal work floor 3 moves laterally to a predetermined position via the roller.

<Installation of Pocket Box> In FIG. 4, when the outer mold 21 and the inner mold 31 are arranged at predetermined positions, a pocket box (not shown) for providing the pocket 6 required in the next step is provided. And attached to the inner surface of the form by an arbitrary method. The installation position of the pocket box needs to be set in consideration of the rising pitch of the external work floor 2 and the internal work floor 3 in advance. Whether the pocket box is installed before or after the rebar assembling work needs to be determined at the time of construction planning. The pocket box is left installed until the concrete is cast and removed when the concrete hardens and the formwork is removed. The concave portion of the pocket 6 may be processed with, for example, an epoxy resin or the like, and may be embedded in the concrete as it is to form the surface of the concrete wall 5. Also, as an alternative to installing the above pocket box,
As shown in FIG. 9, a bracket 11 may be attached to a bolt 10 embedded in a concrete wall 5, and a work floor support pin 7 may be supported on the bracket 11. The above is one cycle of the work process in the climb form method, and thereafter, the construction of the board-like structure is completed by repeatedly performing known work such as concrete casting, form removal, and form tie removal.

[0025]

Since the present invention has been described above,
The following effects can be obtained. <B> Since the external work floor and the internal work floor can be individually raised, the worker can work on the work floor in a safe environment without worrying about falling. <B> Since the method of supporting the external work floor and the internal work floor is a method of supporting with a work floor support pin that engages with a pocket provided in the concrete wall, or a method of supporting with a bracket, a cross-sectional defect in the concrete wall Does not occur, and therefore, the work for reinforcing the sectional defect is not required. <C> Since the external work floor and the internal work floor are independent spaces, they can be used as a storage space for materials, and can also be used as a construction office depending on the size of the construction. <D> Since the outer and inner molds can be easily attached and detached, the porosity of the upper space of the external work floor and the internal work floor can be increased, and the efficiency of rebar assembly work and the like can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall configuration of a form lifting device according to the present invention.

FIG. 2 is a side view showing only the external work floor.

FIG. 3 is a side view showing only the internal work floor.

FIG. 4 is a side view showing a construction order of the form lifting device.

FIG. 5 is a side view of the same.

FIG. 6 is a plan view of the same.

FIG. 7 is a plan view showing a case other than FIG. 6;

FIG. 8 is a plan view of the same.

FIG. 9 is a side view in which a bracket is attached to a concrete wall.

FIG. 10 is a side view showing a conventional form lifting device.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Loran Pegule 3-2-26 Nishi-Shinjuku, Shinjuku-ku, Tokyo BSL Japan Co., Ltd. (72) Inventor Toshimitsu Hirabe, Nishi-Shinjuku-ku, Tokyo Shinjuku 3-chome 2-26 VSL Japan Co., Ltd. (72) Inventor Brian Kabyle Australia 2120 Thornleigh Pioneer A Venue, New South Wells 6 Viesel Presto Lessing Co., Ltd.

Claims (8)

[Claims] 1. A climb form method for continuously constructing a tower-like structure, wherein an external work floor provided with an outer formwork and an internal work floor provided with an inner formwork are independently movable. The feature is a climb form method. 2. The climb form method according to claim 1, wherein the inner working floor moves together with the outer working floor. 3. The climb form method according to claim 1, wherein the external work floor is movable by a climb ram and a piston. 4. The climbing foam according to claim 1, wherein working floor support pins are provided on the outer working floor and the inner working floor, and the outer working floor and the inner working floor are detachably movable when ascending and stopping. Construction method. 5. The climb foam method according to claim 1, wherein a pocket is provided in the concrete wall. 6. The climb foam method according to claim 1, wherein a bracket is provided on the concrete wall. 7. The climb foam method according to claim 1, wherein the internal working floor is independently movable by extension and contraction of a long stroke jack or a rod jack. 8. The climb foam method according to claim 1, wherein an inner formwork that can be moved laterally is attached to the internal work floor.