JPH0533489A - Self-climbing caisson die frame process, device therefor and device for parting caisson die frame - Google Patents

Abstract

PURPOSE:To draw up and fix a caisson die frame without using any crane. CONSTITUTION:Between adjacent those of die frames 2, 3, 4 surrounding four surfaces of a concrete caisson to be produced, a rack 16 is vertically laid in the vicinity of one side end part of one of the adjacent die frames. A motor 18 having a pinion 17 adapted to be meshed with the lack 6 is provided in the vicinity of one side end part of the other one 3 of the adjacent die frames. The fixing of the die-frames for opposite two of the four surfaces, to the concrete body is released at first, and are parted from the concrete body 1. They are then moved inward so as to cause the pinion 17 to mesh with the rack 16. Then, the motor 18 is rotated to raise the die frames for the two surfaces up to a predetermined height, and thereafter, the meshing between the pinion 17 and the rack 16 are released. These two die frames are secured to the concrete body at predetermined positions. Then, the fixing of the remainder two die frames 3, 4 is released, and the die frames 3, 4 are raised and fixed in a similar manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-climbing caisson formwork method used for constructing a concrete caisson, an apparatus therefor, and a caisson form stripping device used for these methods and apparatuses.

[0002]

2. Description of the Related Art Conventionally, when constructing a concrete caisson, the caisson formwork is first constructed on four sides, and the caisson formwork is placed at regular intervals, and concrete is placed on the outside of the caisson formwork. The caisson formwork of No. 1 is lifted by a crane, and the caisson formwork is fixed at a predetermined position on the side wall of the dried concrete skeleton. Then, concrete is poured again, and by repeating the same work thereafter, the concrete layers are sequentially formed from the lowest layer, and by stacking the concrete layers, a huge concrete caisson is constructed. ing. Therefore, until the caisson formwork is lifted and fixed in such a manner, the caisson formwork must always be hung by the crane, which causes problems in workability and safety.

In this respect, according to the "Caisson Form Stopper Construction Method and Automatic Stopper" previously disclosed by the applicant of the present application (JP-A-1-151617), when the caisson formwork is lifted by a crane, the upper end of the dry frame is When it passes,
Because the caisson formwork is automatically locked in place,
Even if the crane was unsuspended, the subsequent mounting work could be performed, and the formwork mounting work could be carried out efficiently and safely.

[0004]

However, even with the above-mentioned "Caisson formwork stopper construction method and automatic stopper", the raising itself of the caisson formwork still depends on the crane, and accordingly the installation of the crane and the crane It cannot be denied that the lifting work itself requires labor and cost. Further, in view of the shortage of manpower in recent years, it is desirable to save labor and labor as much as possible in the work.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and a self-climbing caisson formwork method and device capable of lifting and fixing the caisson formwork without using a crane at all. , And a caisson form stripping device suitable for use in these, to solve the problem.

First, the present invention provides a self-climbing caisson formwork method having the following structure in claim 1. That is, a rack is vertically provided near the side end of one adjacent formwork in a formwork that surrounds four sides for making concrete caisson, and the side ends of the other formworks that are adjacent to each other. A motor having a pinion having a shape that meshes with the rack is provided in the vicinity of the section, and among the four-sided formwork, first, the fixing of the two opposite-sided formwork to the concrete body is released, and these are removed from the concrete body. Peel it off and move it inward to engage the pinion with the rack and rotate the motor to raise the two-sided mold to a predetermined height,
After that, the meshing of the pinion and the rack is released and the two-sided formwork is fixed at a predetermined position on the concrete frame, then the remaining two-sided formwork is released, and these are separated from the concrete structure. And move the pinion inward to mesh with the rack, rotate the motor to raise the remaining two-sided mold to a predetermined height, and then release the meshing between the pinion and rack to remove the two-sided mold. It is a self-climbing caisson formwork method, characterized in that the frame is fixed at a predetermined position on the concrete frame.

Next, in claim 2, as a self-climbing caisson formwork apparatus for carrying out the self-climbing caisson formwork construction method, haunch forms at both end portions of each formwork surrounding four surfaces for concrete caisson production are provided. , The cross-section substantially U-shaped struts are provided vertically, and between adjacent haunch forms, the opening back surfaces of the struts face each other, and among the struts between adjacent haunch forms,
A rack is fixed to the back of one of the columns along the longitudinal direction, a motor having a pinion having a shape that meshes with the rack is fixed above the other columns, and the expansion and contraction portions of the two jacks are respectively fixed. Wheels are provided so that the two wheels face each other by sandwiching the side plates of any one of the columns between the adjacent haunch forms, and these two jacks are attached to other columns by appropriate mounting hardware. We propose a self-climbing caisson formwork device, which is characterized by being fixed to.

Further, in carrying out these self-climbing caisson formwork methods and devices,
In order to efficiently separate and move the caisson formwork, two jacks are fixed in parallel, and a wheel is rotatably provided at the tip of the expansion / contraction part of one of these two jacks, and Wheel support metal fittings are provided in the telescopic part of the jack,
A peeling device for caisson formwork is also provided, characterized in that a wheel rotatably supported by the wheel support fitting is configured to face a wheel of a telescopic portion of the one jack.

[0009]

According to the self-climbing caisson formwork method of claim 1, after the concrete skeleton is dried,
Release the fixing of the two-sided formwork to the concrete skeleton, separate them from the concrete skeleton, move them inward, engage the pinion with the rack, and rotate the motor, the rising reaction force will remain on the other two sides. Since the mold has, the motor is fixed to the released mold, the released mold ascends together with the motor, and the remaining two-sided mold to which the motor is fixed If it is fixed, the released formwork goes up together with the rack. Further, even if the balance is lost during the ascent, the motor can be operated independently and adjusted immediately. In this way, the four-sided caisson formwork can be lifted and fixed in two steps with the two facing formwork forms each.

According to the self-climbing caisson formwork apparatus of the second aspect, the method of the first aspect can be effectively implemented. That is, when peeling off the formwork on the side where one support is provided, leave the formwork on the side where the other support is provided and operate one of the two jacks. Then, if the pillar of the mold to be peeled is pulled toward you, the reaction force is imparted to the fixed mold, so that the mold is peeled off along with one pillar and moved to the inside. If the pinion is made to mesh with the rack at this time, the formwork is raised only by operating the motor. Since the wheels of the telescopic part of the two jacks face each other by sandwiching the side plate of the one strut, if the two wheels sandwich the side plate by the jack operation, these wheels will be in the process of rising. Since it rotates while contacting with the side plate, the mold can be smoothly raised without rattling. Next, when raising the formwork of the remaining two sides, one of the two jacks is operated to push out the support of the formwork that has already been raised and fixed, and the jack itself has the form of the remaining two sides. Since the mold is fixed to the support of the frame and the reaction force is carried by the mold that has been lifted and fixed, the molds of the remaining two surfaces are separated and moved inward. Then, by engaging the pinion of the motor with the rack and rotating it, the molds of the remaining two surfaces are raised.

According to the peeling device for caisson formwork of the third aspect, in the jacking operation of the second aspect, it is possible to pull in or push out one of the columns by expansion and contraction from the same side.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Figure 1 shows the state of the plane during construction, 1 is the concrete frame that was previously cast and has already dried, and 2 is the A form that is raised first (the caisson form has a square plane). However, the illustration of the A ′ formwork located on the opposite side of the A formwork 2 is omitted). Reference numeral 3 is a B formwork which is lifted after the A formwork 2 and the A ′ formwork are lifted and fixed, and 4 is also a B ′ formwork. As shown in FIG. 2, each of these molds is formed by horizontally extending a rectangular mold material, and vertically connecting a plurality of the mold materials. Further, the corner portions on both sides of each mold are appropriately bent. The haunch form members 5 and 6 for the corners having a shape are respectively fixed. Also, adjacent haunch forms 5, 6
Plane trapezoidal punching frames 7 are inserted into the spaces between them.

As shown in FIGS. 1 to 4, each formwork is supported by a formwork support member 8 installed in a vertical direction and a formwork support member 9 which is called a horizontal end thick member and is horizontally passed. , Forming the caisson formwork. Through members 10, 11 are horizontally fixed to the upper and lower ends of each form supporting member 8 by connecting the respective end parts, and both end parts of these through members 10, 11 have a tip angle of 45 degrees. Each of them is diagonally formed. Then, in each of the haunch forms 5, 6, pillars 12, 13 having a substantially U-shaped cross section are arranged so that the rear surfaces of the openings thereof face each other along the upper and lower oblique sides of the respective ends of the threading members 10, 11. It is fixed in parallel with the form supporting member 8. That is,
Supports 12 for A form 2 and A'form haunch forms 5, 6
However, the pillars 13 are fixed to the haunch forms 5 and 6 of the B form 3 and the B ′ form 4 such that their side plates are in close contact with the inner surfaces of the haunch forms 5 and 6, respectively. As shown in FIGS. 2 and 4, scaffolds 15 are horizontally attached above and below the formwork support 8 by scaffolding attachments 14, respectively.

A rack 16 is fixed to each of the columns 12 of the A form 2 and the A'form (not shown) located opposite to the A form 2 along the longitudinal direction of the rear surface thereof, while the B form 3 and the B'form are formed. Frame 4
A motor 18 having a pinion 17 that meshes with the rack 16 is fixed to the side plate of each column 13. The motor 18 has a built-in speed reducer, is fixed to the outside of the side plate by a suitable fitting, the rotary shaft 19 is loosely penetrated from the outside of the side plate toward the inside, and a window 20 is further provided at an appropriate place of the column 13. The pinion 17 is provided so as to project from the window 20 toward the rack 16 side. In addition, each motor 18 is configured so that two motors 18 can rotate synchronously. That is, the motors 18 and 18 on the A form 2 side of the B form 3 and the B ′ form 4 are synchronously rotatable, and the B form 3 and the B ′ form 4 are also rotatable.
The motors 18, 18 on the A ′ mold side in FIG. Of course, each of these four motors 18 can be operated independently.

The motor 1 mounted in this way
As shown in FIG. 5, a pulling guide wheel 21 is fixed to the column 13 above the column 8. As shown in detail in FIG. 6, the pulling guide wheel 21 basically fixes an outer jack 22 and an inner jack 23 in parallel to a substantially L-shaped fixing metal fitting 24, and the fixing metal fitting 24 makes the front motor 1 described above.
It is bolted to the column 13 above 8. The expansion / contraction part 25 of the outer jack 22 has a wheel support member 27 rotatably supporting the wheel 26 on the side of the front end portion thereof, and the wheel 29 and the wheel supported at the end of the expansion / contraction part 28 of the inner jack 23. 26 are facing each other. When the pulling jack wheel 21 having such a structure is fixed to the support column 13, the wheels 26 and 29 fix the side plates of the support column 12 by sandwiching them.

Form support members 8, 8 on both sides of each form
As shown in FIG. 3, below the lower jack wheel 3
0 is fixed horizontally across the form supporting members 8, 8. As shown in FIG. 7, in the lower jack wheel 30, a jack 33 is fixed to the center between the horizontal support members 31 and 32 which are vertically arranged, and the wheel 3 is attached to the tip of the expansion / contraction portion 34.
5 is rotatably supported. And above each of these lower jack wheels 30, the form receiving material 3
6 is fixed across the form supporting members 8, 8.

This embodiment is constructed as described above,
The actual construction procedure will be described below. First, all the form ties clamped and fixed to the A form 2 and the A ′ form are removed, and the extraction form 7 is also removed. Then, the lower jack wheel 30 is operated to extend the expanding / contracting portion 34, and the A form 2 and the A ′ form are separated from the dry concrete skeleton 1. The peeling width is about 30 mm.

Next, as shown by the arrow in FIG. 8, the expansion / contraction portion 25 of the outer jack 22 of the pulling guide wheel 21.
, The B form 3 and the B'form 4 which are still fixed to the concrete frame 1 have a reaction force to separate the A form 2 and the A'form by about 30 mm, as shown in FIG. Thus, the pinion 17 and the rack 16 are engaged with each other. When the engagement is confirmed, the expansion / contraction portion 28 of the inner jack 23 of the pulling guide wheel 21 is extended, and the wheel 27 of the outer jack 22 and the wheel 29 of the inner jack 23 sandwich the side plate of the column 12.

After that, when the motors 18 and 18 are operated to rotate synchronously, the B form 3 and the B'form 4 are fixed to the concrete frame 1. Therefore, the B form 3 and the B'form 3 are fixed. The A form 2 and the A'form are moved upward by giving 4 a reaction force. If the ascending balance is lost, the motor 18 may be operated independently for adjustment.
When it rises about 10 cm, remove the conjoint, remove the formwork receiving material 36, raise it again and stop at a predetermined position, and fix the removed formwork receiving material 36 to the predetermined position of the concrete frame 1. To support the raised A form 2 and A ′ form.

Then, the respective jacks of the pulling guide wheel 21 are released, the form ties are tightened to fix the A form 2 and the A ′ form to the concrete frame 1 so as to be fixed, and the lower jack wheel 30 is released, and both ends are released. The form ties located at the lower stage of each mold support 8 of the section are fixed, and the ascending and fixing of the A form 2 and A ′ form are completed.

Next, the B form 3 and the B'form 4 are lifted and fixed. The basic procedure is the same as that of the A form 2 and the A'forme described above, and this time the peeling is performed. , A form 2 and A'form are provided with a reaction force for ascending. For the operation of the pulling guide wheel 21 at the time of peeling, see FIG.
As indicated by the arrow in FIG.
The B form 3 and the B ′ form 4 are stretched and peeled off. Then, as shown in FIG. 11, when the rack 16 and the pinion 17 are engaged with each other and the motor 18 is operated, the A form 2 and the A ′ form are fixed to the concrete skeleton 1,
By giving them a reaction force, the B form 3 and the B ′ form 4 are moved up together with the motor 18 this time.

In this way, the A form 2 and the A'form are raised and fixed, and then the B form 3 and the B'form 4 are raised.
As in the case of fixing, the four-sided molds are lifted and fixed in two steps to complete the lifting of all the molds.

[0023]

According to the first aspect of the present invention, the caisson formwork can be raised without using a crane at all. Therefore, it is far more efficient and labor-saving compared to the conventional work using a crane. Further, since the two surfaces facing each other are lifted, stable lifting is possible. Since the rise can be finely adjusted by rotating the motor, workability is good, and the caisson formwork can be quickly pulled up and fixed.

According to the second aspect of the present invention, the method of the first aspect can be effectively carried out, and the mold is peeled off before the raising,
Inner movement can be easily done by just jacking. Further, since the wheels facing each other sandwich one strut, it is possible to form a kind of guide wheel for raising the form, and to achieve stable raising without rattling.

According to the third aspect of the present invention, in the jack operation of the second aspect, one strut can be pulled in or pushed out by expansion and contraction from the same side, so that the space can be made compact. Moreover, it is a single member as a whole, and since the fixed molds are alternately and skillfully utilized to give a reaction force to the molds, the molds are peeled off. Only one of the two mold faces is required.

[Brief description of drawings]

FIG. 1 is a plan view showing a state where an A form is raised according to an embodiment of the present invention.

FIG. 2 is an explanatory side view showing a state in which the ascending is completed and the A form is fixed to the concrete skeleton according to the embodiment of the present invention.

FIG. 3 is a front explanatory view showing a state where the ascending is completed and the A form is fixed to the concrete skeleton according to the embodiment of the present invention.

FIG. 4 is a plan view showing a configuration of a caisson formwork according to an embodiment of the present invention, with a rack, a motor, and a pulling guide wheel removed.

FIG. 5 is a front view of the vicinity of the upper part of the haunch form, showing the meshing state of the rack and pinion of the form according to the embodiment of the present invention.

FIG. 6 is a plan view of the pulling guide wheel according to the embodiment of the present invention.

FIG. 7 is a plan view of the lower jack wheel according to the embodiment of the present invention.

FIG. 8 is a partial cross-sectional plan view of the haunch form part showing a state where the A form part is peeled off in the embodiment of the present invention.

FIG. 9 is a plan cross-sectional view of the vicinity of the motor showing the meshing state of the rack and the pinion when raising the A form according to the embodiment of the present invention.

FIG. 10 is a partial cross-sectional plan view of the vicinity of a haunch form showing a state where the B form is peeled off in the embodiment of the present invention.

FIG. 11 is a plan cross-sectional view of the vicinity of the motor showing the engagement state of the rack and the pinion when the B form is raised according to the embodiment of the present invention.

[Explanation of symbols]

1 concrete frame 2 A formwork 3 B formwork 4 B'form 8 Formwork support material 12 props 13 props 16 racks 17 pinion 18 motor 21 Pulling guide wheel 22 Outer jack 23 Inner jack 25 Telescopic part 26 wheels 28 Telescopic part 29 wheels 30 lower jack wheels 33 jacks 34 Telescopic part 35 wheels

Claims (3)

[Claims] 1. A rack is vertically provided near each side edge of one adjacent formwork in a formwork surrounding four sides for making a concrete caisson, and another formwork adjacent to each other is provided. A motor having a pinion having a shape that meshes with the rack is provided near the side end of the, and among the four-sided formwork, first, the fixing of the facing two-sided formwork to the concrete frame is released, and these The pinion is separated from the concrete frame and moved inward to engage the pinion with the rack, the motor is rotated to raise the two-sided formwork to a predetermined height, and then the pinion and rack are disengaged from each other. Fix the surface formwork in place on the concrete skeleton, then unlock the remaining two-sided formwork, separate them from the concrete skeleton and move them inward to engage the pinion with the rack. , The motor Characterized in that the remaining two-sided formwork is raised to a predetermined height and then the pinion and the rack are disengaged to fix the two-sided formwork at a predetermined position of the concrete frame. A self-climbing caisson formwork method. 2. A pillar having a substantially U-shaped cross section is vertically provided on the haunch formwork at both end portions of each formwork that encloses the four surfaces for producing a concrete caisson, and between the adjacent haunch forms is a pillar form. Make the back faces of the openings face each other, and among the columns between adjacent haunch forms, a rack is fixed to one column along the longitudinal direction on the back face, and above the other columns, A motor having a pinion having a shape that meshes with the rack is fixed, and wheels are respectively provided on the expansion and contraction portions of the two jacks, and the two wheels are any one of the columns between adjacent haunch forms. Self-climbing caisson formwork device, characterized in that the two side plates are sandwiched so as to face each other, and these two jacks are fixed to other columns by appropriate mounting hardware. 3. Two jacks fixed in parallel,
A wheel is rotatably provided at the tip of the expansion / contraction part of one of the jacks of the book, a wheel support fitting is provided at the expansion / contraction part of the other jack, and a wheel rotatably supported by the wheel support fitting is provided. A peeling device for a caisson formwork, characterized in that it is arranged so as to face the wheel of the elastic portion of the one jack.