JP3781491B2 - Slab construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction method for a slab such as a roadbed on an elevated road.
[0002]
[Prior art]
Conventionally, when constructing a slab such as a roadbed on an elevated road, a support work is assembled between the piers of the elevated road, a concrete formwork is installed thereon, and concrete is placed on the concrete formwork.
[0003]
[Problems to be solved by the invention]
However, in such a conventional construction method, when building a slab, a support work is constructed between each pier of the elevated road, and a concrete formwork is installed. It was necessary to dismantle the support and formwork.
Therefore, it took a lot of manpower and days to build a slab.
The present invention has been made to solve such problems, and an object of the present invention is to provide a slab construction method capable of saving labor and shortening the construction period in construction of a slab.
[0004]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a formwork unit in which a concrete formwork for forming a slab is attached and integrated on an upper part of a support that is pre-assembled and can be installed on the ground, and is used for carrying the formwork unit. A crawler traveling vehicle having a platform is provided, a vehicle space that allows the crawler traveling vehicle to enter and exit is provided at the center of the formwork unit, and the crawler traveling vehicle is allowed to enter the vehicle space. The lower end of the formwork unit is separated from the ground, and the formwork unit portion located above the vehicle space is supported by the cradle. In this state, the formwork unit is slab-constructed by the crawler traveling vehicle. The lower end of the formwork unit is installed on the ground at the slab construction location, and the formwork unit located above the cradle and the vehicle space. Releasing a root section, the crawler traveling vehicle is exiting from the vehicle space, characterized by constructing the slab by Da設 concrete on the concrete form.
[0005]
Further, the present invention is characterized in that the slab constitutes a roadbed of an elevated road.
Further, the present invention is characterized in that the concrete formwork extends between adjacent piers of an elevated road.
Further, the present invention is characterized in that after the crawler traveling vehicle is withdrawn from the vehicle space, a reinforcing support is disposed in the vehicle space to support the concrete formwork.
In the present invention, the cradle is provided on the crawler traveling vehicle so as to be able to turn. When changing the moving direction of the crawler traveling vehicle during transportation by the crawler traveling vehicle, the lower end of the cradle is The crawler traveling vehicle is lifted from the ground by extending downward, and after turning the crawler traveling vehicle, the lower end of the cradle is shortened to ground the crawler traveling vehicle. To do.
[0006]
In the slab construction method of the present invention, a formwork unit in which a pre-assembled support work and a concrete formwork are integrated is transported to a slab construction place by a crawler traveling vehicle equipped with a cradle, Thus, it is not necessary to manually assemble support work and formwork at each slab construction site.
Further, at the end of the construction of the slab, the support work may be removed together with the formwork by the crawler traveling vehicle, and it is not necessary to dismantle the support work and the formwork manually.
Therefore, labor saving and shortening of the construction period can be realized.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a formwork unit and a crawler traveling vehicle used in the slab construction method of the present invention.
The formwork unit 1 is a unit in which a support work 2 and a concrete formwork 4 are attached and integrated.
The formwork unit 1 is, for example, for constructing a slab that forms a roadbed of an elevated road, and more specifically, for constructing a slab extending between adjacent piers of the elevated road.
The formwork unit 1 is assembled in advance, and is generally formed in a rectangular parallelepiped shape. The length of the formwork unit 1 is approximately equal to the distance between adjacent piers of the elevated road, and the width is slab and shoulder on one side of the elevated road in this embodiment. It is wide enough to build the part. Moreover, the height is slightly lower than the lower surface of the slab of the elevated road.
[0008]
The concrete mold 4 for forming the slab is fixed to the upper part of the support work 2, and the concrete mold 4 is formed in an upward arch shape.
The formwork unit 1 is transported by the crawler traveling vehicle 6, and the crawler traveling vehicle 6 is located at the center in the longitudinal direction and the width direction of the support 2 from a direction orthogonal to the longitudinal direction of the support 2. That is, a vehicle space 8 for entering and exiting from the width direction of the support work 2 is formed.
The support 2 includes a plurality of pillars 10 extending vertically on both side portions of the vehicle space 8, and a jack 12 for supporting the support 2 is vertically extended at each lower end.
[0009]
The crawler traveling vehicle 6 is provided with a pedestal 14 so as to be able to turn, and the crawler traveling vehicle 6 is driven and rotated by a pair of left and right crawlers 16 being rotated by a remote operation by radio.
The cradle 14 is for supporting the formwork unit 1, and the outer shape thereof is formed in a substantially rectangular parallelepiped frame shape. The cradle 14 has pillars 18 that extend vertically at four corners, and the lower ends of the pillars 18 are received at the lower ends. A jack 20 for supporting the base 14 is extended downward, and on the other hand, at the upper end of each column 18 is a support 2 portion located above the vehicle space 8, in the embodiment for supporting a beam 24. A jack 22 extends upward.
[0010]
In the slab construction method of the present embodiment, the support unit 2 and the concrete formwork 4 are installed as follows using the formwork unit 1 and the crawler traveling vehicle 6 as described above.
First, in order to transport the formwork unit 1 arranged in a storage place or the like, the crawler traveling vehicle 6 is moved by remote control, and the crawler traveling vehicle 6 is allowed to enter the vehicle space 8.
Then, the jack 22 at the upper end of the cradle 14 is extended and the tip is brought into contact with the beam 24 of the support 2 so that the entire formwork unit 1 is placed above the crawler traveling vehicle 6 as shown in FIG. lift.
[0011]
In this state, the crawler traveling vehicle 6 is remotely operated to move the formwork unit 1 to the slab construction location.
At that time, when the direction of the crawler traveling vehicle 6 is changed, the jack 20 at the lower end of the cradle 14 is extended, the tip is grounded to the ground, and the crawler traveling vehicle 6 is lifted.
FIG. 2 is a side view showing a state in which the jack 20 at the lower end of the cradle 14 is extended to raise the crawler traveling vehicle 6 from the ground.
In this state, the crawler traveling vehicle 6 is turned so as to be directed in a necessary direction (turning 90 degrees in FIG. 2), and then the jack 20 is shortened to lower the crawler traveling vehicle 6 together with the cradle 14, The crawler traveling vehicle 6 is grounded to the ground, and the cradle 14 is returned to the state supported by the crawler traveling vehicle 6.
FIG. 3 is a side view showing the crawler traveling vehicle 6 after the crawler traveling vehicle 6 turns 90 degrees.
In the state of FIG. 3, the support work 2 is moved and conveyed in the longitudinal direction.
[0012]
FIG. 4 is a side view showing a state in which the support work 2 is disposed between the piers of the elevated road.
As shown in FIG. 4, the formwork unit 1 is transported by the crawler traveling vehicle 6, and the two adjacent support works 2 are aligned so that the longitudinal direction of the support work 2 coincides with the extending direction of the elevated road 23. It arrange | positions between the piers 25. In this case, as shown in the figure, the crawler traveling vehicle 6 is turned 90 degrees again, and the support work 2 is moved in the minor axis direction.
And each jack 12 of the lower end of the support work 2 is extended below, and is grounded, and the support work 2 is installed on the ground by the jack 12. At that time, the position of the concrete mold 4 is set to an appropriate height by adjusting the jack 12.
[0013]
FIG. 5 is a cross-sectional view in the direction across the road showing the support works 2 arranged between the columns of the elevated road.
As shown in this figure, in this embodiment, since the slabs 32 of the elevated road 23 are constructed one by one, the supporting work 2 is arranged on one side of the elevated road 23 and the concrete formwork 4 is placed on the supporting work 2. It is placed at a position inside the road.
On the other hand, in the present embodiment, a formwork 28 for constructing the shoulder portion 26 of the elevated road 23 is supported at a location outside the road on the support 2, and reference numeral 50 in FIG. 5 denotes an underground beam.
[0014]
Thereafter, the jack 22 at the upper end of the cradle 14 is shortened, and the crawler traveling type vehicle 6 is moved to leave the vehicle space 8 of the support work 2.
After the crawler traveling type vehicle 6 is withdrawn from the vehicle space 8, a support 30 is provided for reinforcement at the center of the vehicle space 8 as shown by a dotted line in FIG. Make sure you can support it more reliably.
After that, as shown in FIGS. 4 and 5, the slab 32 of the expressway 23 is constructed by placing concrete on the concrete formwork 4 and curing as usual, and in this embodiment, an elevated road. 23 shoulder sections 26 are also constructed.
[0015]
The crawler traveling vehicle 6 that has finished transporting the formwork unit 1 is moved to the above-mentioned storage place of the formwork unit 1 and used to transport another formwork unit 1 to the next slab construction place.
At the end of the construction of the slab 32, the crawler traveling vehicle 6 is re-entered into the vehicle space 8 of the mold unit 1 and the crawler traveling vehicle 6 is lifted with the mold unit 1 lifted on the cradle 14. Retreat from the vehicle space 8, remove the formwork unit 1 from under the elevated road 23, transport it to the next slab construction site, and reuse it.
[0016]
As described above, in the slab construction method of this embodiment, the formwork unit 1 in which the support work 2 and the concrete formwork 4 are assembled in advance and integrated is used as a slab construction place by the crawler traveling vehicle 6 including the cradle 14. Since it is transported and installed, it is not necessary to manually assemble the support work 2 and the concrete formwork 4 at each slab construction site as in the conventional case.
Further, at the end of the construction of the slab 32, the support work 2 and the concrete formwork 4 may be removed by the crawler traveling vehicle 6, and it is not necessary to dismantle the support work 2 and the concrete formwork 4 manually.
Therefore, labor saving and shortening of the construction period can be realized.
Moreover, since the crawler traveling type vehicle 6 is used, the formwork unit 1 can be efficiently transported in a stable state even in places where the ground is inclined or uneven.
[0017]
In addition, although the present Example demonstrated as an example the case where the slab of an elevated road was constructed | assembled, this invention is not limited to this example, The concrete slab which comprises various structures in a comparatively high place is constructed | assembled It can be widely applied to.
[0018]
【The invention's effect】
As is apparent from the above description, in the slab construction method of the present invention, a mold unit unit is provided by attaching a concrete mold for forming a slab to the upper part of a support that is pre-assembled and can be installed on the ground. A crawler traveling vehicle having a cradle for carrying the formwork unit is provided, a vehicle space that allows the crawler traveling vehicle to enter and exit is provided at the center of the formwork unit, and the vehicle space includes the The crawler traveling vehicle is intruded, the lower end of the mold unit is separated from the ground, and the mold unit unit located above the vehicle space is supported by the cradle. In this state, the crawler traveling vehicle The formwork unit is transported to the slab construction location, and the lower end of the formwork unit is installed on the ground at the slab construction location, above the cradle and the vehicle space. Release the said form unit portion positioned, the crawler traveling vehicle is exiting from the vehicle space, and by Da設 concrete on the concrete form so as to build a slab.
Therefore, it is not necessary to manually assemble the support work and the concrete formwork at each slab construction point as in the conventional case.
Further, at the end of the construction of the slab, it is only necessary to remove the support work together with the concrete formwork by the crawler traveling vehicle, and it is not necessary to manually dismantle the support work and the formwork.
Therefore, labor saving and shortening of the construction period can be realized.
[Brief description of the drawings]
FIG. 1 is a side view showing a formwork unit and a crawler traveling vehicle used in a slab construction method according to the present invention.
FIG. 2 is a side view showing a state where a jack is extended to raise a cradle.
FIG. 3 is a side view showing the vehicle after turning the crawler traveling vehicle by 90 degrees.
FIG. 4 is a side view showing a state in which the support works are arranged between the piers of the elevated road.
FIG. 5 is a cross-sectional view in the direction across the road showing the support works arranged between the piers of the elevated road.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Formwork unit 2 Supporting work 4 Concrete formwork 6 Crawler traveling type vehicle 8 Vehicle space 10, 18 Pillars 12, 20, 22 Jack 14 Base 23 Elevated road 24 Beam 30 Supporting work 32 Slab

Claims (5)

A pre-assembled formwork unit with a concrete formwork for slab formation attached to the upper part of the support that can be installed on the ground is provided,
A crawler traveling vehicle provided with a cradle for carrying the formwork unit is provided,
A space for the vehicle that allows the crawler traveling vehicle to enter and exit is provided at the center of the mold unit.
The crawler traveling vehicle is allowed to enter the vehicle space, the lower end of the formwork unit is separated from the ground, and the formwork unit portion located above the vehicle space is supported by the cradle,
In this state, the crawler traveling vehicle transports the formwork unit to the slab construction location,
At the slab construction location, the lower end of the formwork unit is installed on the ground, the cradle and the formwork unit part located above the vehicle space are separated,
Leaving the crawler traveling vehicle from the vehicle space;
Constructing a slab by placing concrete on the concrete formwork,
Slab construction method characterized by that. The slab construction method according to claim 1, wherein the slab constitutes a roadbed of an elevated road. The slab construction method according to claim 2, wherein the concrete formwork extends between adjacent piers of an elevated road. The slab construction method according to claim 1, wherein after the crawler traveling type vehicle is withdrawn from the vehicle space, a reinforcing support is disposed in the vehicle space to support the concrete formwork. The cradle is provided on the crawler traveling vehicle so as to be able to turn. When changing the moving direction of the crawler traveling vehicle during transportation by the crawler traveling vehicle, the lower end of the cradle is extended downward to crawler. The slab construction method according to claim 1, wherein after the traveling vehicle is raised from the ground and the crawler traveling vehicle is turned, the lower end of the cradle is shortened to ground the crawler traveling vehicle.

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