JPH07180106A - Reinforced concrete pavement method and reinforcement device - Google Patents

Abstract

PURPOSE:To provide a reinforced concrete pavement technique which is maintenance free and capable of saving manpower dramatically and enhancing construction efficiency as well. CONSTITUTION:Coils 20, which constitute horizontal reinforcements 21 and vertical reinforcements 22, are loaded on a reinforcement device 10. The vertical reinforcements 22 and the horizontal reinforcements 21 are continuously placed on the surface of a road while the reinforcement device 10 is adapted to run. Concrete is placed with a concrete placement truck 40 running after the reinforcement device 10, thereby paving the road with the reinforced concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced concrete pavement construction method and a bar arrangement device in which bar arrangement work is mechanized.

[0002]

2. Description of the Related Art Reinforced concrete pavement in which reinforcing bars are inserted in a concrete slab has been highly evaluated for its effect of preventing cracks and load bearing capacity, and is therefore used in various fields such as roads, airports and harbors. Generally, in reinforced concrete pavement, a reinforcing bar work for assembling reinforcing bars in each length and the horizontal direction and a concrete placing step are performed in different steps.

[0003]

Problems to be Solved by the Invention The above-mentioned conventional reinforced concrete paving technique has the following problems.

<A> A large amount of labor is required because the work of arranging the bars and the welding of the reinforcing bars at the work site requires a lot of labor, and the work span is about 10 meters, so the work efficiency is low and the overall work is poor. This is an obstacle to improving construction efficiency.
Further, when paving the road with reinforced concrete, the traveling performance deteriorates because the number of joints of the concrete slab, which is the source of impact of the passing vehicle, increases.

<B> Since the same vertical streaks are welded and extended to the end of the vertical streaks of a fixed size (about 10 meters), the strength of the joint of the vertical streaks is unavoidable. Therefore, in the future, it is necessary to project the joint portion of the reinforcing bar to reinforce the reinforcing bar for repairing, and a great human and economical burden is imposed on the maintenance. This problem also applies to the method of setting factory-processed reinforcing bars on site.

<C> At present, when high-speed mass transportation is expected in the future, it is difficult to deal with rapid construction with the construction techniques used so far, and proposals for improvement techniques thereof are earnestly desired.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a maintenance-free reinforced concrete pavement technique which can significantly reduce labor and improve construction efficiency. To do.

[0008]

The present invention relates to a reinforced concrete pavement construction method in which concrete is placed after arranging on the road surface, in the step of continuously pulling out vertical bars from the coil, and in the crossing direction of vertical bars on the road surface. It consists of the step of laying horizontal bars, the step of connecting the intersections of both bars on the road surface, and the step of placing concrete until the reinforcing bars assembled in a grid pattern are hidden. Characteristic,
It is a reinforced concrete pavement method.

Further, the present invention is a device for moving in front of a device for placing concrete on a road surface, which comprises a plurality of vertical streak coils mounted on a loading platform, and a training for pulling out the coils and processing them into a straight line. A bar arrangement device, comprising: a device, a plurality of horizontal bars mounted in a direction orthogonal to a pull-out direction of a coil for a vertical bar, and a laying arm laying a horizontal bar on the loading platform on a road surface. Is.

[0010]

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

<B> Supplying means for vertical reinforcement Fig. 1 shows a plan view of a construction facility for reinforced concrete pavement, and Fig. 2 shows a front view thereof, both of which are continuously reinforced concrete pavement A from the right side to the left side of the drawing. Represents the state of building. In this embodiment, the forward side is referred to as “front” and the opposite side is referred to as “rear”, and the terms are used in unification. Reference numeral 10 is a bar arrangement device having a self-propelled function, and a plurality of coils 20 are sequentially provided on the bed from the traveling direction side, a training device 11 for drawing out the coils 20 and processing them into a straight line, and a direction orthogonal to the traveling direction. Horizontal line 2 toward
1 and the laying arm 12 for laying the horizontal bar 21 on the road surface B are mounted. The coil 20 is a steel material for a vertical bar made by winding a steel rod (including deformed steel bar) of about 100 to 200 meters in a roll shape, and can freely rotate in the vertical or horizontal direction according to the number of vertical bars to be arranged. It is placed in. The straining device 11 has a plurality of drums (not shown) built therein, and each coil 20 is passed by passing between a plurality of drums.
The vertical stripes 22 drawn from are given linearity so that they can be continuously fed backward.

<B> Supplying means for the horizontal bar The horizontal bar 21 is composed of a reinforcing bar having a length corresponding to the pavement width, and is provided with a plurality of spacers 23 attached to the peripheral surface thereof at predetermined intervals so as not to fall off. is doing. The spacer 23 is a support body that supports the lateral streaks 21 at a certain distance from the road surface B, and various known ones can be applied. The laying arm 12 is composed of a multi-joint robot arm, has a chuck portion that can grasp and open the horizontal stirrup 21 at the tip, takes out the horizontal stirrup 21 mounted on the bar arrangement device 10 one by one, and equidistantly on the road surface B. It is constructed so that it can be laid out.

<C> Reinforcing Bar Joining Means Conventionally, the reinforcing bars (longitudinal and lateral bars) were bound by human power, but in the present embodiment, the joining robot 30 having a self-propelled function as shown in the figure is used. Automatically join intersections. The combined robot 30 has a plurality of sets of guide rollers 31 in front thereof and a work arm 32 which can be automatically controlled rearward. The guide roller 31 is a roller for guiding the vertical stripe 22 drawn from the coil 20 to near the road surface B, and is composed of a pair of rollers. The working arm 32 is composed of an articulated robot arm, and a known reinforcing bar binding machine or reinforcing bar welding machine is equipped at the tip of the arm, and a plurality of intersecting portions of the horizontal bar 21 and the vertical bar 22 are bound or welded simultaneously. Can be combined.
For the movement of the work arm 32, for example, a sensor (not shown) is attached to the joint robot 30, and the work arm 32 is automatically controlled based on a sensor signal of the lateral muscle 21 by the sensor, or pre-programmed to periodically operate the work arm 32. Alternatively, image processing may be used.

<D> Concrete placing means 40 is a concrete placing trolley having a self-propelled function. A hopper 42 for accommodating ready-mixed concrete is mounted in front of the gantry 41, and a finisher 43 is provided behind it. ing. Further, the concrete placing carriage 40 is equipped with a formwork 44 oriented parallel to the traveling direction. The finisher 43 has at least a concrete leveling function and a compacting function, and is capable of mechanically performing a series of steps from leveling to finishing of the concrete. Further, as shown in FIG. 3, the concrete placing carriage 40 is provided with a telescopic cylinder 46 between the traveling body 45 and the pedestal 41 so that the level of the concrete placing carriage 40 can be adjusted. ing.

[0015]

[Operation] Next, the pavement method will be described.

<A> Reinforcing bar set Referring to FIGS. 1 and 2, the reinforcing bar arrangement 10, the connecting robot 30,
When the movements to the left side of the drawing are started while the concrete pouring trucks 40 are simultaneously operated, the reinforced concrete pavement A is continuously built in the following manner. Insert the start end of each coil 20 on the bar arrangement device 10 into the straining device 11,
The vertical line 22 is pulled out to the rear of the bar arrangement device 10. When the bar arrangement device 10 is operated in this state, the laying arm 12 repeats the process of gripping the lateral bar 21 with the spacer 23 and sequentially arranging it on the road surface B. In parallel with the laying process of the horizontal streaks 21, the training device 11 continuously pulls the vertical streaks 22 rearward, and the drawn vertical streaks 22 are placed so as to intersect the lateral streaks 21 arranged on the road surface B. Placed.

<B> Reinforcing Bar Connection In the connecting device 30 that runs across both reinforcing bars 21 and 22, the working arm 32 is used to connect the intersections of both reinforcing bars 21 and 22 by welding or binding. As a result, the reinforcing bars are continuously assembled on the road surface B in a cross beam shape.

<C> Concrete placing A concrete placing trolley 40, which runs from the rear side of the coupling device 30, runs concrete on the road surface B defined by the formwork 44, and then finishes it with the finisher 43. Build a reinforced concrete pavement A with a specified thickness. In addition, the hopper 42 of the concrete placing truck 40 is conveyed through a conveyor or the like.
Replenish the interior with concrete in a timely manner. Further, as shown in FIG. 3, when the construction width of the reinforced concrete pavement A is wide, the amount of expansion and contraction of the cylinder 46 is adjusted and the concrete pouring truck 40 is adjusted.
One of the traveling bodies 45 is made to travel on the existing reinforced concrete pavement A, and concrete is placed using the end surface of the existing reinforced concrete pavement A as a formwork.
When the reinforced concrete pavement A is constructed, if the end of the coil 20 on the arranging device 10 is approaching due to the pulling out of the vertical bar 22, the coil 20 is newly placed and the end and start ends of both coils are pressed or joined. Connect using.

[0019]

[Embodiment 2] As shown in FIG. 4, the construction of Embodiment 1 is repeated to construct the reinforced concrete pavement A in plural times. In this case, the rebar 21, which is continuously assembled,
22 is to be laid in each reinforced concrete pavement A1 and A2. In addition, each reinforced concrete pavement A1, A2
Since the construction method is basically the same as the construction of the above-described first embodiment, the description thereof will be omitted.

[0020]

[Third Embodiment] In the above embodiment, the case where the vertical stirrup 22 continuous with the constant-size horizontal stirrup 21 is connected on the road surface B has been described. However, as shown in FIG. The continuous body of the assembled reinforcing bars may be laid on the road surface B while the reinforcing bars 22 are assembled in a lattice shape. FIG. 5 shows a side view of the bar arrangement device 10.
1 is provided with a placing table 13 for placing the horizontal streaks 21, a horizontally arranged bar arrangement drum 14 is rotatably supported behind the placing table 13, and the bar arrangement drum 14 is further provided.
A binding machine 15 is arranged around the. Bar arrangement drum 14
Has a plurality of grooved grooves 16 formed on its circumferential surface, and the mounting table 1
The lateral streaks 21 on the upper part 3 can be successively taken into the groove 16. The bar arrangement device 10 includes a bar arrangement drum 14 and a bar arrangement drum 1.
By the binding machine 15 arranged on the upper part of 4, the crosswise portions 21 accommodated on the peripheral surface of the reinforcement drum 14 and transferred and the crossing portions of the vertical reinforcements 22 pulled out from the training apparatus 11 can be bound together. It is like this. This embodiment can also be applied in one step even for a reinforcing bar having a multiple structure, and is suitable for on-site construction where the process is fast and rapid construction is required.

[0021]

Fourth Embodiment Further, as shown in FIGS.
When assembling the two muscles 21 and 22 in a grid pattern,
Alternatively, the upper portion of the spacer 24 formed by bending a steel rod into a substantially U shape may be attached to the lower surface of the vertical stripe 22 and then laid on the road surface B. To attach the spacer 24, for example, a plurality of sets of articulated robot arms (not shown) are installed at the rear portion of the bar arrangement drum 14 of the bar arrangement device 10, and the spacer 24 is grasped by one arm. A method of pressing against the lower surface of the horizontal streak 21 or the vertical streak 22 and welding the contact portion with the other welding robot arm can be considered. Further, the device for attaching the spacer 24 may be separated from the bar arrangement device 10 and run behind the bar arrangement device.

[0022]

[Embodiment 5] FIG. 7 shows that the reinforcing bar drums 14a and 14b are arranged in multiple stages, and an assembly of a plurality of sets (in this embodiment, two lower sets) of reinforcing bars is manufactured and laid in multiple layers. An example of is shown.
Spacers 24 having different leg lengths are attached to the assembly of the reinforcing bars of each set by the same means as the attaching means exemplified in the above embodiment. In this embodiment, a plurality of rebars can be arranged in multiple layers by one-time construction.

[0023]

[Sixth Embodiment] A laser level sensor is attached to each construction machine side, and a laser level is arranged on the road surface B side to automatically perform a reinforcing bar process, a reinforcing bar connecting process, a concrete placing process, and a concrete finishing process. Can be controlled.

[0024]

Since the present invention is as described above, the following effects can be obtained.

<A> Since the laying and assembling of the reinforcing bar can be performed mechanically, it is possible to significantly reduce the labor and increase the efficiency of the construction.

<B> Since the vertical bars are continuous, the number of joints of the reinforced concrete plate can be reduced. Therefore, the maintenance cost of reinforced concrete pavement can be significantly reduced.

<C> Up until now, the processing location of the reinforcing bar has been secured near the construction site, but in the present invention it is not necessary to secure the processing location of the reinforcing bar.

<D> Up to now, since the reinforcing bar assembling process and the concrete placing process are performed as separate processes, the reinforcing bar may be exposed to wind and rain to corrode. Since it is placed, the corrosion of the reinforcing bar can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a plan view of a construction machine according to a first embodiment.

[Figure 2] Side view

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is an explanatory view of a second embodiment for constructing a laminated reinforced concrete pavement.

FIG. 5 is an explanatory view of Examples 3 and 4 in which the reinforcing bars are assembled on the traveling carriage.

FIG. 6 is an explanatory view of a fourth embodiment in which a spacer is attached before laying a reinforcing bar.

[Fig. 7] An explanatory view of Example 5 in which reinforcing bars are laid in two steps, one up and down

Claims (9)

[Claims] 1. A reinforced concrete pavement method for placing concrete after arranging on the road surface, a step of continuously pulling out vertical bars from a coil, a step of laying horizontal bars on the road surface in a direction intersecting the vertical bars, and A reinforced concrete pavement method characterized by comprising the steps of joining the intersections of both reinforcements with and the step of placing concrete until the reinforcing bars assembled in a grid pattern are hidden, and performing each of the steps in parallel. 2. In a reinforced concrete pavement method of placing concrete after arranging on the road surface, a step of continuously pulling out vertical bars from the coil, a step of laying horizontal bars with spacers on the road surface, and A reinforced concrete pavement method, comprising the steps of joining the intersections of both reinforcements and the step of placing concrete until the reinforcements assembled in a grid pattern are hidden, and performing each of the above-mentioned steps in parallel. 3. A reinforced concrete pavement method of placing concrete after arranging on the road surface, a step of continuously pulling out vertical bars from a coil, a step of laying horizontal bars on the road surface, and an intersection of both bars on the road surface. A method of reinforced concrete pavement, which comprises the steps of joining the concrete and placing concrete until the reinforcing bars assembled in a lattice shape are hidden, and constructing a plurality of layers of reinforced concrete pavement in parallel with each of the steps. 4. In a reinforced concrete pavement construction method in which concrete is placed after arranging on the road surface, a step of continuously pulling out vertical bars from the coil, and attaching horizontal bars at equal intervals to each vertical bar that is pulled out, and intersecting both bars It is composed of the steps of laying an assembly of continuous reinforcing bars on the road surface by joining the parts, and placing concrete until the reinforcing bars assembled in a grid pattern are hidden, and the steps are performed in parallel. Yes, reinforced concrete pavement method. 5. In a reinforced concrete pavement construction method in which concrete is placed after arranging on the road surface, a step of continuously pulling out vertical bars from the coil, and attaching horizontal bars at equal intervals to each vertical bar that is pulled out, and intersecting both bars Joining the parts to produce a continuous rebar assembly, laying on the road surface after attaching spacers to the rebar assembly at predetermined intervals, and rebar assembled in a grid pattern A reinforced concrete pavement method, comprising the step of placing concrete until it is hidden, and performing the above steps in parallel. 6. In a reinforced concrete pavement construction method in which concrete is placed after arranging on the road surface, a step of continuously extracting a plurality of vertical bars from the coil, and attaching horizontal bars to the extracted vertical bars at equal intervals, The steps of joining a plurality of sets of reinforcing bars by joining the intersections of the above with a distance in the vertical direction, laying the plurality of sets of reinforcing bars on the road surface, and A reinforced concrete pavement method, comprising the step of placing concrete until it is hidden, and performing the steps in parallel. 7. A device for moving in front of a device for placing concrete on a road surface, comprising: a plurality of vertical streak coils mounted on a loading platform; and a training device for pulling out the coils and processing them into a straight line. A bar arrangement device, comprising: a plurality of horizontal bars mounted in a direction orthogonal to a pulling-out direction of the vertical bar coil; and a laying arm that lays the horizontal bars on the loading platform on a road surface. 8. A device for moving in front of a device for placing concrete on a road surface, comprising: a plurality of vertical streak coils mounted on a bed; and a training device for pulling out the coils and processing them linearly. A plurality of horizontal streaks mounted in a direction orthogonal to the direction of pulling out the longitudinal stirrup coil, a groove for accommodating the horizontal stirrup on the peripheral surface, and a stirrer drum that rotates with a support shaft facing sideways, An arranging device, characterized in that the arranging device is provided around a muscular drum, and is provided with a connecting means for connecting an intersection of a vertical line and a horizontal line. 9. A device for moving in front of a device for placing concrete on a road surface, comprising: a plurality of vertical streak coils mounted on a loading platform; and a training device for pulling out the coils and processing them into a straight line. , A plurality of horizontal reinforcements mounted in a direction orthogonal to the direction of pulling out the vertical reinforcement coil, and a plurality of reinforcement drums having a groove for accommodating the horizontal reinforcements on the circumferential surface and rotating with the support shaft facing sideways, A bar arrangement device, comprising: a connecting unit that is provided around each bar arrangement drum and that connects an intersection of a vertical bar and a horizontal bar.