JP3065916B2 - Equipment for moving formwork for floor concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for moving a formwork used for placing concrete floorboard of a steel bridge.

[0002]

2. Description of the Related Art Conventionally, as a device for moving a formwork used for casting concrete floorboard of a steel bridge, for example, as shown in FIG. A main formwork 4 for forming a central floorboard A is disposed on a carriage movable along the rails 3 on the cross beam 2 disposed therebetween, and a support device such as a wedge is provided between the rail and the carriage. An overhanging formwork 5 for inserting and forming the overhanging floor plate B is removably fixed on a form receiving truss 6 (support) via a long bolt 7 and a lower end of the form receiving truss 6. The rail 9 is fixed to the main girder 1 via a supporting device such as a wedge, and a rail 9 extending in the bridge axis direction is arranged on a receiving column 8 projecting above the central floor slab concrete to be cast. Then, the supporting beam 10 is movably arranged along the rail 9 and 10 mold moving device configured by suspending the scaffolding truss 11 at both ends of has become known (JP-B 50-30931 Patent Publication).

[0003] By the way, in this form moving apparatus, after the floor slab concrete is constructed, the main form and the slab floor slab are separately moved. Since the bolts are fixed with long bolts, the long bolts are removed each time, and the form for the overhanging floor panel and the form receiving truss (support) are small blocks to facilitate the assembly in the next process. Dismantled and lowered on the scaffold truss before moving.

[0004] For this reason, dismantling work and taking down on a scaffold truss are not only complicated, but also dangerous due to work at a high place. Cutting of the supporting pole,
Various problems to be solved have been pointed out, such as the need for work such as post-filling.

Also, a concrete pier is erected and
Form beams and floor slabs in concrete and cast concrete
In the construction method, cross beams are provided at predetermined locations on
And move the moving frame on the rollers in the bridge axis direction.
It is mounted so that it can run and supports and
A movable form device equipped with a floor plate form is known (Japanese Patent Application Laid-Open
No. 51-22238, Japanese Patent Publication No. 47-1343
Information).

In the case of these movable form devices, the main form and the
Whether the form for the floor panel is mounted on the moving frame
Since the formwork for the overhanging floorboard moves together with the main formwork,
Although it is not necessary to dismantle each pier, overhanging each pier
Attach a cross beam of the width of the plate form, and place rollers on this cross beam.
Installation and removal.
It was troublesome to remove.

Further, the length of the moving frame of the moving form device is increased.
Needs at least twice the length between piers
Because of that, in long span bridges that are bridged over rivers, etc.
Implementing such a movable formwork device requires a great deal of labor.
Technology and safety to support the moving frame
Is virtually impossible because of the need to ensure
Was.

[0008]

Accordingly, in the present invention,
The moving mechanism of the form for the overhanging floor panel is supported by the suspension device movably mounted along the lower flange of the main girder, and the supporting horizontal beam is pivotally supported, and the support of the form for the overhanging floor panel is supported on the supporting horizontal beam. A height-adjusting jack device interposed between the supporter and the formwork for the overhanging floor plate is arranged on the supporter, and the suspension device is
Hook-shaped inside of both ends of the suspension frame
Erect the support frame and the outer support frame
The inner support frame can be flipped up with the axis as a fulcrum
On the other hand, the load is
Provide rigid connecting means fixed to the suspension frame by addition
Constituted by, Hakare omission of work, such as post-filling process after the concrete construction with ensuring the safety of working at heights, yet reinforcing steel on the inside of the main girder web
Move the moving device smoothly even in the area where the funer is located
It is preferred.

[0009]

In the present invention, the movement of the main formwork after the concrete is installed is not much different from the conventional moving device, but the formwork for the overhanging floorboard is released from the overhanging floorboard concrete by loosening the jack device. After that, it is placed on the support beam standing on the support beam and fixed, and the suspension device supporting the support beam is simply moved forward along the lower flange of the main girder. Dismantling and removal of formwork and support works can be omitted, and the load is supported below the floor slab during construction and movement of floor slabs, so there is no need to perform post-processing on the bridge surface after completion of construction .

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of the present invention; For convenience of explanation, the same members as those of the conventional device are denoted by the same reference numerals. Further, the present invention is not limited to this embodiment, and it is needless to say that various design changes can be made without departing from the spirit of the present invention.

In FIG. 1, a floor form concrete casting form moving apparatus 20 according to the present invention includes a main form moving mechanism 2 for moving a main form 4 used for forming a central floor plate A.
2 and an overhanging formwork 5 used when forming the overhanging floorboard B
And a moving mechanism 24.

The main form moving mechanism 22 has a rolling support member 26 such as a chill tank disposed on a cross beam 2 disposed between the main beams 1 and 1, and a support beam is provided on the rolling support member 26. It is configured by arranging a cross beam 32 as a form support via a jack 28 and a jack device 30 for height adjustment. In this case, the support beam 28 is configured to be smoothly moved in the bridge axis direction. The rolling support member 26
Can be replaced with a slide plate made of , for example, ethylene tetrafluoride polymer or the like. Also, the movement of the main mold frame moving mechanism 22, previously moved forward to rolling was set support member upper 26 that further Chiruhoru arranged forward, I Rigyo by to tensile pulling device such as a winch <br />

On the other hand, the overhang-form moving mechanism 24 has a main girder 1,
The support beam 36 is suspended by the suspension devices 34, 34 which are movably mounted along the lower flanges 1a of FIG. 1 and form supports 38 assembled on both ends of the support beam 36 by pipe members or the like. Are vertically arranged, and a jack device 40 for height adjustment is interposed between each supporter 38 and the overhanging formwork 5.

As shown in FIGS. 2 and 3, the suspension device 34 has a hook-shaped inner support frame 44 and an outer support frame 46 at both ends of the suspension frame 42 and an inner support frame 44. Is constructed so that it can be flipped up with a shaft 48 as a fulcrum, while a transfer roller 50 is arranged at the end of the outer support frame 46. The suspension frame
42 connects the substantially central portion in支保crossbeam 36 via a shaft 52, but the outer support frame 4 of the suspension frame 42
The connecting members 54 and 55 are provided at predetermined positions on the sixth side and the support cross beams 36.
Are protruded, and the pins 56 provided on the connecting member 55 are inserted into the elongated holes 57 provided on the connecting member 55 on the outer support frame 46 side, so that when a load is applied, the shaft 52
In addition, it is configured to function as a rigid connection (ramen) support portion 58.

In FIGS. 1 to 3, reference numeral 59 is used.
Is a moving rail interposed between the lower flange 1a of the main girders 1 and 1 and the moving roller 50.
It is also possible to employ an alternative to the configuration of the moving roller to Nameraban with adhering the stainless steel plate on top surface.

Next, the procedure from the placement of the floor slab concrete to the movement of the formwork using the formwork moving apparatus according to the present invention will be described. First, upon pouring of the floor concrete, the main mold 4 through the lateral beam 32 by adjustment of the jack device 30 disposed via a support member 26 and the shoring beams 28 on the transverse girder 2 main girder 1,1 Each overhanging formwork 5 is also held at a predetermined height position by a jack device 40 on the formwork support 38. In this state, the overhang mold frame moving mechanism 24 is suspended from the lower flange 1a of the main beams 1, 1 via the shaft 52 of the suspension device 34 (see FIG. 4A).

As can be seen from FIG. 4B, a plurality of the form moving devices 20 are arranged along the bridge axis direction, and these form moving devices 20 are attached to the lower portions of the support beams 36. Although it is used in a state where it is connected by the beam 60 and an appropriate connecting device 62, it is possible to suitably cope with a curved girder by doing in this way, and the construction load is dispersedly supported at multiple supports. Reinforcement of the steel bridge body can be unnecessary.

Next, the reinforced block reinforcement 64
After was location mounting on the mold 4,5 crowded suspended in a crane or the like, performs the assembly of reinforcement joint portion (see FIG. 5), after setting and side mold 66, the middle bed plate A and the overhang floorboards The floor concrete 68 containing B is cast and cured (see FIG. 6), and the side mold 66 is released to introduce prestress (see FIG. 7). In this case, it is not necessary to introduce prestress when using reinforced concrete floorboards.
In addition, the load applied by the casting of the concrete of the overhanging floor plate B part is the overhang formwork 5, the formwork support 38, the support cross beam 3
6 and evenly supported by the main beams 1 and 1 via the shaft 52 of the suspension device 34.

Next, the jack device 30 supporting the main form 4 is released (jack down), and the main form moving mechanism 22 is rolled along the rolling support member 26 by a tension device such as a chill hole or a winch arranged in front. To advance to a predetermined position. On the other hand, for the overhanging mold 5, similarly open the jack device 40 and (jack down) holding the overhanging mold 5 on支保Engineering 38, the overhanging type frame moving mechanism 24 which is connected some By operating an appropriate tension device in the same manner as described above, the moving roller 50 of the suspending device 34 is moved to the moving rail 59,
That is, it is advanced to a predetermined position along the lower flange 1a (see FIG. 8). At this time, the overhang formwork 5 and the shoring 38 may be left as they are, and there is no need to disassemble them, so that work at a high place can be performed easily and safely.

When the extension form moving mechanism 24 is advanced, as shown in FIG. 9, the portion of the web of the main girder 1 where the reinforcing stiffener 70 is located is the inner support frame 44 of the suspension device 34. 9 may be flipped up with the shaft 48 as a fulcrum and moved around the reinforcing stiffener 70 (FIG. 9).
a).

When the inner support frame 44 is flipped up with the shaft 48 as a fulcrum, the load of the overhanging formwork 5 and the supporter 38, which are normally shared between the inner support frame 44 and the outer support frame 46, is reduced to the outer support frame. Since the suspension device 34 is placed on the frame 46, the suspension device 34 is in an unstable supporting state. However, according to the suspension device 34, when the load is applied, the pin 56 provided on the connection member 55 is provided on the connection member 55. The outer support frame 46 is fixed by moving the elongated hole 57 and functions as a rigidly connected (ramen) support portion 58 together with the shaft 52, so that there is no inconvenience such as a mechanical loss of balance and concrete construction is performed. Since it acts as a vertical load in the same manner as at the time, it can be moved safely and smoothly.

When the main form moving mechanism 22 and the overhang form moving mechanism 24 are advanced to predetermined positions, the main form 4 and the overhang form 5 are set again and the next floor concrete is poured. I just need.

[0023]

As described above, according to the apparatus for moving the concrete formwork for floor slab according to the present invention, the formwork for the overhanging floor slab and the shoring work are disassembled after the concrete construction as in the prior art. or, it is not necessary to move to the next step from the Lower taken, not only can be moved in the mold as efficiently and smoothly, sufficient can ensure safety also becomes less working at heights. Furthermore, during construction of the floor concrete, because it supports a load both when moving beneath the floor, since it is not necessary to perform post-processing on Hashimen (floor) after construction completion without developing well as water leakage, It has various advantages such as shortening of the construction period.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional explanatory view showing a relationship between a preferred embodiment of a floor plate concrete casting formwork moving apparatus according to the present invention and a steel bridge in a bridge axis transverse direction.

FIG. 2 is an explanatory plan view of the form moving device shown in FIG. 1 taken along line XX.

FIG. 3 is an explanatory side view of a suspension device forming a part of the overhanging formwork moving mechanism in the formwork moving apparatus shown in FIG. 1;

FIG. 4 is an explanatory view of a state in which the main formwork and each overhanging formwork are supported by using the floorboard concrete casting formwork moving device according to the present invention, wherein a is an explanatory view in the transverse direction of the bridge axis. B is a side view in the bridge axis direction.

5 is an explanatory view of a state in which block reinforcing bars laid on the main formwork and each overhanging formwork of FIG. 4 are arranged, wherein a is an explanatory view in a direction transverse to the bridge axis, and b is a bridge axis. It is a side surface explanatory view of a direction.

FIG. 6 is an explanatory view showing a state in which a small formwork is set on the block reinforcing bar of FIG. 5 and then the floor plate concrete is cast to cure and harden; It is a side view explanatory drawing of a bridge axis direction.

7 is an explanatory view of a state in which prestress is introduced by removing the fore-mold from FIG. 6; FIG. 7A is an explanatory view in a direction transverse to the bridge axis; FIG. is there.

FIG. 8 is an explanatory view showing a state in which a main formwork and each overhanging formwork are jacked down from floor slab concrete and each of them is moved to the next step, wherein a is an explanatory view in a direction transverse to the bridge axis, and b is a bridge. It is a side view explanatory drawing of an axial direction.

FIG. 9 is an explanatory diagram showing a moving state of a portion having a stiffener inside a main girder web when jacking down each overhanging formwork and moving to the next step, similarly to FIG.
Is an explanatory view in a bridge axis transverse direction, and b is an explanatory side view in a bridge axis direction.

FIG. 10 is a schematic sectional explanatory view showing a relationship between a conventional form moving device and a steel bridge in a direction transverse to the bridge axis.

[Explanation of symbols]

Reference Signs List 20 formwork moving device, 22 main formwork moving mechanism, 24 overhanging formwork moving mechanism, 26 support member, 28 support beam, 30 height adjustment jack device, 32 cross beam,
34 suspension system, 36 support beam,
38 Formwork support, 40 Height adjustment jack device, 42 Suspension frame, 44 Inner support frame, 46 Outer support frame, 48 axis,
50 Moving roller, 52
Shaft, 54 Connecting member, 55
Connection member, 56 pin, 57 slot, 58 rigid support, 59
Moving rail, 60 vertical beam, 62 coupling device, 64 block reinforcing bar, 66
Side formwork, 68 floor concrete, 70 stiffener for reinforcement,

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-51-22238 (JP, A) JP-A-6-24008 (JP, U) JP-A-4-5555 (JP, Y2) JP-B-47 1343 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E01D 21/00 E01D 19/12

Claims (1)

(57) [Claims] A main formwork moving mechanism for moving a main formwork for forming a central floorboard along a horizontal girder disposed between the main girders; and a mechanism for moving an overhanging floorboard formwork. Equipment for moving formwork
In the installation, the moving mechanism of the overhanging floor plate formwork is configured to pivotally support the supporting cross beam with a suspension device movably mounted along the lower flange of the main girder, and to form the overhanging floor plate formwork on the supporting horizontal beam. And a height-adjusting jack device to be interposed between the supporter and the formwork for the overhanging floor plate is arranged on the supporter,
Both ends of the suspension frame supported by the device against the support beam
Hook-shaped inner support frame and outer support frame
Stand up and the inner support frame jumps around the axis as a fulcrum.
It is constructed so that it can be lifted, while at the end of the outer support frame
Fixed parts are fixed to the suspension frame by applying load
An apparatus for moving a concrete formwork for floor slabs , characterized by being provided with a stiffening means .