JP2873906B2 - Reinforced concrete pavement method and reinforcement arrangement - Google Patents

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 method and a device for arranging reinforcing bars, which mechanize the arranging operation.

[0002]

2. Description of the Related Art Reinforced concrete pavements reinforced by putting reinforcing bars in concrete slabs have been evaluated in various fields such as roads, airports, and harbors because of their high evaluation of the slab's effect of suppressing cracks and load bearing capacity. In general, in reinforced concrete pavement, a reinforcing bar for assembling reinforcing bars vertically and horizontally for each span and a concrete placing process are performed in separate processes.

[0003]

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

<A> Since a great deal of labor is required because the work of arranging reinforcing bars and welding of reinforcing steel on the site is performed by human power, the work efficiency is low because the construction span is about 10 meters, and the overall work efficiency is low. This is an obstacle to improving construction efficiency.
In the case of reinforced concrete pavement on a road, the traveling performance is deteriorated because the number of joints of a concrete slab which is a source of impact of a passing vehicle increases.

<B> Since a similar vertical streak is welded and extended to the end of the vertical streak having a fixed size (about 10 meters), a decrease in the strength of the joint of the vertical streak is inevitable. Therefore, in the future, the joint portion of the reinforcing bar must be pulled out and the reinforcing bar must be reinforced and repaired, which imposes a large human and economic burden on maintenance. This problem is the same even in the method of setting the rebar processed at the factory on site.

<C> At present, mass rapid transport is expected in the future, and it is becoming difficult to cope with rapid construction with conventional construction techniques, and there is an urgent need for proposals for improvement techniques.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a maintenance-free reinforced concrete pavement technology capable of greatly reducing labor and improving construction efficiency. Is to do.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a reinforced concrete pavement method in which concrete is laid after arranging on a road surface. A step of laying horizontal bars, a step of joining intersections of both bars on a road surface, and a step of placing concrete until the reinforcing bars assembled in a grid are hidden, and performing each of the steps in parallel. Features,
This is a reinforced concrete pavement method.

Further, the present invention relates to an apparatus for moving in front of an apparatus for placing concrete on a road surface, comprising a plurality of vertical streak coils mounted on a loading platform, and a training device for extracting the coils and processing them in a straight line. A bar arrangement device, comprising: a device; a plurality of horizontal bars mounted in a direction orthogonal to a drawing direction of a vertical bar coil; and a laying arm for laying a horizontal bar on the cargo bed on a road surface. It is.

[0010]

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

<A> Means for Supplying Vertical Bars FIG. 1 is a plan view of a reinforced concrete pavement construction facility, FIG. 2 is a front view thereof, and both figures are reinforced concrete pavement A continuously from the right side to the left side of the drawing. Represents the state of building. In this embodiment, the term "forward" is used for the traveling side and "rearward" is used for the opposite side. Reference numeral 10 denotes a bar arrangement device having a self-propelling function, a plurality of coils 20 in order from the traveling direction side, a training device 11 for extracting the coils 20 and processing them in a straight line, and a direction orthogonal to the traveling direction. Horizontal streak 2
1 and a laying arm 12 for laying a horizontal streak 21 on the road surface B. The coil 20 is a steel material for vertical bars obtained by winding a steel bar (including deformed bars) of about 100 to 200 meters in a roll shape, and is rotatable vertically or horizontally in a number corresponding to the number of vertical bars to be arranged. It is placed on. The training apparatus 11 has a plurality of built-in drums (not shown).
The linear streaks 22 drawn out from the front are provided with linearity so that they can be continuously supplied rearward.

<B> Horizontal bar supply means The horizontal bar 21 is composed of a reinforcing bar having a length corresponding to the pavement width, and has a plurality of spacers 23 attached to its peripheral surface at predetermined intervals so as not to fall off. doing. The spacer 23 is a support that supports the horizontal streaks 21 at a predetermined distance from the road surface B, and various known members can be applied. The laying arm 12 is composed of an articulated robot arm, has a chuck portion at its tip which can grip and release the horizontal streaks 21, takes out the horizontal streaks 21 mounted on the bar arrangement device 10 one by one, and places them at equal intervals on the road surface B. It is configured so that it can be laid out on the floor.

<C> Reinforcing Bar Reinforcement Conventionally, rebars (longitudinal and horizontal) are bound by human power, but in the present embodiment, a connecting robot 30 having a self-propelling function as shown is used to connect rebars. Automatically join intersections. The coupling 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 streaks 22 drawn out of the coil 20 to near the road surface B, and includes a pair of rollers. The working arm 32 is constituted by an articulated robot arm, and is equipped with a known reinforcing bar binding machine or a reinforcing bar welding machine at the tip of the arm, and binds or welds a plurality of intersections of the horizontal bar 21 and the vertical bar 22 at the same time. It can be combined.
The movement of the work arm 32 is, for example, equipped with a sensor (not shown) in the joint robot 30 and automatically controlled based on a signal from the sensor to detect the horizontal streak 21 or programmed in advance to operate the work arm 32 periodically. Alternatively, image processing may be used.

<4> Concrete placing means 40 is a concrete placing truck having a self-propelling function, and has a hopper 42 for accommodating ready-mixed concrete mounted in front of a frame 41 and a finisher 43 provided behind the hopper 42. ing. Further, the concrete casting truck 40 is equipped with a formwork 44 oriented parallel to the traveling direction. The finisher 43 has at least a leveling function and a compacting function of the concrete, so that a series of steps from the leveling to the finishing of the concrete can be mechanically performed. As shown in FIG. 3, the concrete placing cart 40 is provided with a telescopic cylinder 46 disposed between the traveling body 45 and the gantry 41 so that the level of the concrete placing cart 40 can be adjusted. ing.

[0015]

Next, the pavement method will be described.

<A> Set of reinforcing bars In FIGS.
When the movement to the left of the drawing is started while simultaneously operating the concrete placing carts 40, the reinforced concrete pavement A is continuously constructed in the following manner. Insert the starting end of each coil 20 on the muscle arrangement device 10 into the training device 11,
The vertical streaks 22 are pulled out behind the bar arrangement device 10. When the bar arrangement device 10 is operated in this state, the process in which the laying arm 12 grips the horizontal streak 21 with the spacer 23 and sequentially arranges it on the road surface B is repeated. In parallel with the process of laying the horizontal streaks 21, the training device 11 continuously pulls out the vertical streaks 22 toward the rear, and the pulled out vertical streaks 22 are mounted so as to intersect with the respective horizontal streaks 21 arranged on the road surface B. Is placed.

<B> Connection of Reinforcing Bar The connecting device 30 running across the two bars 21 and 22 uses the working arm 32 to connect the intersections of the two bars 21 and 22 by welding or bundling. As a result, the reinforcing bars are continuously assembled on the road surface B in a grid pattern.

<C> Concrete casting A concrete casting truck 40 that travels from behind the coupling device 30 and places concrete on the road surface B defined by the formwork 44, and finishes the concrete with the finisher 43. A reinforced concrete pavement A having a predetermined thickness is constructed. In addition, the hopper 42 of the concrete placing cart 40 is provided through a conveyor or the like.
Timely replenish concrete inside. When the width of the reinforced concrete pavement A is wide as shown in FIG.
Is run on the existing reinforced concrete pavement A, and concrete is poured using the end face 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 reinforcing member 10 is approached by pulling out the vertical bar 22, a new coil 20 is placed, and the ends and the start ends of both coils are pressed or joined. Connect using.

[0019]

Second Embodiment As shown in FIG. 4, the construction of the first embodiment is repeated, and the reinforced concrete pavement A is constructed a plurality of times. In this case, the rebars 21, which are continuously assembled,
22 is to be laid in each reinforced concrete pavement A1, A2. Each reinforced concrete pavement A1, A2
The construction method is basically the same as the construction method of the first embodiment, and the description thereof is omitted.

[0020]

Embodiment 3 In the above embodiment, the case where the fixed horizontal streaks 21 and the continuous vertical streaks 22 are connected on the road surface B has been described. However, as shown in FIG. While assembling the streaks 22 in a lattice shape, a continuum of the assembled reinforcing bars may be laid on the road surface B. FIG. 5 shows a side view of the bar arrangement device 10, and the training device 1
1, a mounting table 13 for mounting the horizontal streaks 21 is arranged, and a reinforcing drum 14 extending in a horizontal direction is rotatably supported behind the mounting table 13.
The binding machine 15 is disposed around the periphery. Bar arrangement drum 14
Has a plurality of grooves 16 formed on the circumferential surface thereof.
The upper horizontal stripes 21 can be sequentially taken into the groove 16. The reinforcement arrangement device 10 includes a reinforcement arrangement drum 14 and a reinforcement arrangement drum 1.
By the binding machine 15 disposed on the upper part of the 4, it is possible to bind each intersection of the horizontal streaks 21 housed and transferred on the peripheral surface of the reinforcing drum 14 and the vertical streaks 22 drawn out from the training device 11. It has become. The present embodiment can be applied in a single step even for a reinforcing bar having a multi-layered structure, and is suitable for on-site construction requiring quick and rapid steps.

[0021]

Embodiment 4 As shown in FIGS.
When assembling the two streaks 21 and 22 in a lattice shape, the vertical streaks 22
Alternatively, an upper portion of a spacer 24 in which a steel bar is bent in a substantially U-shape may be attached to the lower surface of the vertical streak 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 of the reinforcement drum 14 of the reinforcement 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 is conceivable. 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 a case where the reinforcing drums 14a and 14b are arranged in multiple stages, and a plurality of sets (in this embodiment, two small sets) of reinforcing bars are manufactured and laid in a multiplex manner. The following shows an example.
The spacers 24 having different leg lengths are attached to the assembly of each set of reinforcing bars by the same means as the attachment means exemplified in the above embodiment. In this embodiment, a plurality of rebars can be arranged in a multiplex in a single construction.

[0023]

[Embodiment 6] A laser level sensor is mounted on each construction machine side, and a laser level is arranged on the road surface B side, etc., thereby automatically performing a reinforcing process, a reinforcing bar connecting process, a concrete placing process, and a concrete finishing process. Can be controlled.

[0024]

As described above, the present invention has the following effects.

<A> Since the reinforcing bars can be laid and assembled mechanically, significant labor savings and high efficiency of construction can be achieved.

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

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

<D> Up to now, since the rebar assembling process and the concrete placing process are performed in separate processes, the rebar may be exposed to the weather and may be corroded. Since it is cast, corrosion of the reinforcing steel can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a side view thereof.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is an explanatory view of Embodiment 2 in which a reinforced concrete pavement having a laminated structure is constructed.

FIG. 5 is an explanatory view of Embodiments 3 and 4 in which assembling of reinforcing bars is performed on a 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 is an explanatory view of a fifth embodiment in which rebars are laid in two steps, upper and lower, in a single operation;

Claims (9)

(57) [Claims] 1. A reinforced concrete pavement method for laying concrete after arranging reinforcement on a road surface, a step of continuously drawing out vertical bars from a coil, a step of laying a horizontal bar on a road surface in a direction crossing the vertical bars, A step of joining the intersections of the two bars with each other, and a step of placing concrete until the reinforcing bars assembled in a grid are hidden, wherein each of the steps is performed in parallel. 2. A reinforced concrete pavement method in which concrete is laid after being laid on a road surface, wherein a step of continuously drawing out vertical bars from a coil; a step of laying a horizontal bar with spacers on the road surface; A reinforced concrete pavement method, comprising: a step of joining intersections of both bars; and a step of placing concrete until the reinforcing bars assembled in a grid are hidden, wherein each of the steps is performed in parallel. 3. A reinforced concrete pavement method for laying concrete after arranging reinforcement on a road surface, a step of continuously drawing out vertical bars from a coil, a step of laying horizontal bars on a road surface, and an intersection of both bars on the road surface. And piling concrete until the reinforcing bars assembled in a grid are hidden. A plurality of layers of reinforced concrete pavement are constructed in parallel with each of the above steps. 4. A reinforced concrete pavement method for laying concrete after arranging reinforcing bars on a road surface, wherein a step of continuously drawing vertical bars from a coil, attaching horizontal bars at equal intervals to each of the drawn vertical bars, and intersecting the both bars. A step of laying a continuous assembly of reinforcing bars on the road surface by joining the parts, and a step of placing concrete until the reinforcing bars assembled in a grid are hidden, wherein the steps are performed in parallel. The reinforced concrete paving method. 5. A reinforced concrete pavement method for laying concrete after arranging reinforcement on a road surface, wherein a step of continuously pulling out vertical bars from a coil, attaching horizontal bars at equal intervals to each of the drawn vertical bars, and intersecting both bars. Manufacturing a continuous rebar assembly by joining parts, a step of laying on a road surface after attaching a spacer to the rebar assembly at a predetermined interval, and reinforcing bars assembled in a grid shape A step of pouring concrete until the concrete is hidden, and performing each of the steps in parallel. 6. A reinforced concrete pavement method for laying concrete after arranging reinforcement on a road surface, wherein a plurality of vertical bars are continuously drawn from a coil, and horizontal bars are attached to each of the drawn vertical bars at equal intervals. A step of manufacturing a plurality of sets of continuous reinforcing bars at a distance in the vertical direction by joining the intersections of the above, and a step of laying the plurality of sets of reinforcing rods on a road surface; A reinforced concrete pavement method, comprising a step of placing concrete until it is hidden, and performing each of the steps in parallel. 7. A device for moving a device in front of a device for placing concrete on a road surface, comprising: a plurality of coils for vertical streaks mounted on a cargo bed; and a training device for extracting the coils and processing them in a straight line. A bar arrangement device, comprising: a plurality of horizontal bars mounted in a direction orthogonal to a drawing direction of a vertical bar coil; and a laying arm for laying a horizontal bar on the cargo bed on a road surface. 8. A device for moving a device in front of a device for placing concrete on a road surface, comprising: a plurality of coils for a vertical streak mounted on a cargo bed; and a training device for extracting the coil and processing it into a straight line. A plurality of horizontal streaks mounted in a direction orthogonal to the drawing direction of the vertical streak coil, a reinforcing bar drum having a groove for accommodating a horizontal streak on a peripheral surface, and rotating with a support shaft in a horizontal direction; A bar arrangement device, which is provided around a muscle drum and includes a joining means for joining an intersection of a vertical line and a horizontal line. 9. A device for moving a device in front of a device for placing concrete on a road surface, comprising: a plurality of coils for vertical streaks mounted on a carrier; and a training device for extracting the coils and processing them in a straight line. A plurality of horizontal streaks mounted in a direction perpendicular to the drawing direction of the coil for vertical streaks, a plurality of reinforcing drums having a groove for accommodating the transverse streaks on the peripheral surface, and rotating with the support shaft in a lateral direction, A bar arrangement device, which is provided around each of the bar arrangement drums and includes a joining means for joining an intersection of a vertical line and a horizontal line.