JPH0745722B2 - Method and device for raising submerged concrete paving slab - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for lifting a submerged concrete paving slab when the height of the submerged concrete paved road or the like is lifted to flatten the entire road surface.

[0002]

2. Description of the Related Art Conventionally, as a method of repairing a partial settlement of concrete pavement, surface pavement is conventionally raised on the pavement surface,
So-called overlays and the method of removing the entire pavement plate in the subsidence and re-doing it were adopted.

Further, it is also proposed to engrave sinking in advance and to embed metal fittings for raising at regular intervals over the entire pavement surface at the time of first pavement plate forming and molding (Japanese Patent Laid-Open No. 61-16).
9504).

However, since the surface of the concrete paving slab becomes high in the conventional repair by overlay, it is often necessary to reconstruct the gutters and curbs, and the step between the raised portion and the non-raised portion is eliminated. Since this is not possible, it is necessary to construct a wide area up to the part where no subsidence has occurred in a place where the step is inconvenient. Further, since the surface concrete is cast, it is necessary to cure the concrete, and there is a problem that traffic must be cut off for a long time.

In addition, the method of newly rehashing the concrete paving slab costs as much as the new paving, and also requires a traffic interruption for a longer period than the overlay, and when it is necessary to connect to the existing part. Has a limited working space, which causes a problem in workability.

[0006] Further, the method of previously providing the metal fitting for uplifting is uneconomical since there is a high possibility that it will be provided even in a portion that does not actually sink, and there is a problem that the pavement plate to be formed first becomes expensive. is there.

Therefore, as a method for solving such a conventional problem, a working hole is formed in a subsidence area of a concrete pavement plate, a jack is attached to the work hole, and the subsidence area is lifted until the surface becomes flat and backfilled. A height repairing method has been developed (Japanese Patent Laid-Open No. 1-318606).

[0008]

SUMMARY OF THE INVENTION The present invention provides a method of restoring height by using a jack to lift an existing concrete paving slab safely, accurately, and without damage. The purpose of the present invention is to provide a method for raising a sinking concrete paving slab that can quickly flatten the surface of the concrete paving slab.

[0009]

The feature of the method of the present invention for achieving the above-mentioned object is that a large number of working holes are provided at intervals in a certain range of the settlement area of the concrete paving slab,
In the lifting method of the submerged concrete pavement, mounting the pavement lifting jack in each of the work holes and lifting the concrete pavement to the planned height by each jack. (Hereinafter referred to as CPU) and its CP for jack control
Using a central control computer device that communicates with U,
The paving plate height of the working hole position for each lifting jack to which each jack is mounted is measured in advance, and the lifting target value is set for each working hole position based on the measured value, and each lifting target is set. A step of creating divided upvalue data in which the values are each divided into the same number; and the divided upvalue data is input to the central control computer device, and the divided control data is divided from the central control computer device to each jack control CPU. A lifting command for one division value of the upper value is transmitted, and each jack control CPU causes each jack to perform a lifting operation for one division value based on the command, and a lifting completion signal is sent to the central control computer device. and transmitting to the central control computer device waits for reception of the first divided value min jack up complete signal from the jack control CPU, and transmits the jack up command for the next one partition value content, above Similarly, the step of raising each divided value is sequentially repeated to raise to the target value, and the feature of the device of the present invention is that the work hole formed in the concrete paving plate and the anti-reaction of the lower part thereof are formed. A sinking jack that is interposed between a power board and lifts the concrete paving slab, a hydraulic unit that operates the lifting jack, and a jack control CPU that controls the hydraulic unit. In a lifting device for a concrete paving slab, the hydraulic unit and a jack control C are provided for each lifting jack.
A lift-up device for a concrete paving slab, which is provided with a PU and a centralized control computer device that transmits and receives to and from the jack control CPU to control the jack control CPU.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a lifting device used in the method of the present invention. In FIG. 1, 1 is a concrete paving slab to be lifted, 2 is a working hole formed through the front and back of the paving slab, 3a is a roadbed, 4 is a reaction board formed on the roadbed, 5 is a reaction board Reference numeral 10 is a pile of reaction force receiving metal fittings, and 10 is a concrete plate lifting metal fitting housed in the working hole 2. The metal fitting 10 includes a cylinder body 11 and an auxiliary cylinder 12 screwed into the lower end thereof.
And three concrete plate support pieces 13.

An internal thread 14 is formed on the inner surface of the cylinder body 11. A flange 15 having an outer diameter substantially the same as the outer diameter of the cylinder body 11 is formed on the outer periphery of the lower end of the auxiliary cylinder 12, and a male screw 16 screwed into a female screw 14 of the cylinder body 11 is engraved on the other end side of the flange 15. Has been done.

On the upper surface of the flange 15, a large number of pins 17, 17 ... For locking the concrete plate support piece 13 are provided in a protruding manner.

As shown in FIG. 2, each concrete slab support piece 13 has a shape in which a ring-shaped disk is divided into multiple parts, and when it is attached to the auxiliary cylinder 12, the whole is made into a disk shape. . Further, locking holes 18, 18 ... In which the pins 17, 17 ...

In the metal fitting 10, the three concrete plate supporting pieces 13 are separately inserted through the working holes 2 formed in the concrete paving slab 1, and the auxiliary cylinder 12 in the working space 3 and the disk on the flange 15 thereof. And the locking holes 18 are fitted to the pins 17. Next, the cylinder body 11 is replaced with the auxiliary cylinder 12
The upper surface of the concrete slab support piece 13 at the lower end thereof to press the upper surface of the flange 15 and sandwich it between the upper surface of the flange 15 and
It is designed to integrate the whole.

A bracing jack 20 is mounted between the metal fitting 10 and the reaction force receiving metal fitting 5. The bracing jack 20 has a cylindrical ramchair 21 having a window 21a on the periphery thereof, and the lower end of the ramchair 21 is screwed into the upper end of the cylindrical portion 12 of the metal fitting 10 described above. The outer periphery of the lower end of the hydraulic cylinder 22 is fixed to the upper end of the ram chair 21, and the ram 23 is hydraulically moved in and out of the center of the lower end surface of the hydraulic cylinder 22. The upper end of a cylindrical steel extension rod 24 is in contact with the tip of the ram 23. The lower end of the extension rod 24 is brought into contact with the upper end of the reaction force receiving metal fitting 5 described above, and the ram 23 is pushed out to push the upper surface of the metal fitting 5 via the extension rod 24. The ram chair 21 is pulled up, and the paving slab 1 is lifted via the metal fitting 10. On the other hand, a cylindrical nut swivel tool 25 is inserted between the ram chair 21 and the extension rod 24 in a concentric arrangement with them. This nut turning tool 2
5, a nut engagement protrusion is provided at the lower end so as to be fitted into the tool engagement hole of the lock nut 26, and the tool 25 is swung from the window 21a of the ram chair 21 to lock the lock nut. 26 is screwed back and forth.

At the upper end of the hydraulic cylinder 22, the ram 2 is attached.
An in-and-out rod 27 that reciprocates together with 3 is projected, and a lift amount detection sensor 28 including a rotary encoder for measuring an operation amount of the in-and-out rod 27 is provided on the outer side thereof.

The lifting jack 20 is operated by a dedicated jack driving device 30. The jack driving device 30 is equipped with a hydraulic unit 32 mounted on a hand truck 31 and a jack for controlling the hydraulic unit 32. It has a control CPU 33.

The lifting jack 20 is provided with a handcart 31 and a lifting device 3 attached thereto.
It is adapted to be hung and supported via the 4.

Further, the jack control CPU 33 communicates with a separately provided centralized control computer device 35, and is controlled thereby.

Next, the work sequence of the lifting method of the present invention using each of the above devices will be described with reference to the flow chart of FIG. (1) First, as shown in FIG. 3, work holes 2, 2, ... Are opened in the subsidence area A of the concrete pavement plate 1 such as a runway at regular intervals. (2) Work holes 2 and 2 used for one lift-up work The surface height of the paving slab 1 at the position is measured using a laser level and a laser staff (not shown), and the current height is measured. Data is created (step a in FIG. 6). As an example, the work holes used for one lifting work are 18 holes in one row and 3 holes in a total of 54 holes. (3) Next, as shown in FIG. 1, each of the work holes is equipped with the lifting jack 20, and as shown in FIG. 4, the jack control CPU 33 of each jack 20 is connected to the central control computer device 35 with a cable. (Step b in FIG. 6). (4) In addition to this, for each work hole 2, 2 ... where the lifting jack 20 is mounted, one lifting work height is calculated based on the previously measured current height data, and The lifting procedure in one lifting operation is calculated (step c in FIG. 6). (5) Next, for all the work holes 2, 2, ..., Determine the target elevation height that can be safely elevated from the current height by a single elevation operation, and divide this into multiple equal numbers. , For example, the divided uplift data is divided into first to fifth divided amounts (step d in FIG. 6). This data is recorded, for example, on a floppy disk so as to be ready for the next work. (6) The divided lifting data recorded on the floppy disk is input to the central control computer device 35 (step e in FIG. 6). The centralized control computer device 35 transmits data for raising the jack control CPU 33 by the first division amount based on the division elevation data (step f in FIG. 6). (7) In each jack control CPU 33, the hydraulic unit 32 is operated based on the transmitted data, and the first
The jack 20 is operated by the divided amount (step g in FIG. 6), and the load data at that time and the operation completion signal are transmitted to the central control computer device 35 (step h in FIG. 6).
The centralized control computer device 35 records the transmitted data from the respective jack control CPUs 33 over time and simultaneously displays them on the display. (8) Wait for the operation completion signals from all the jack control CPUs 33 to be sent, and then send the data for raising the next second divided amount. CP for jack control
In U33, similarly to the above, the designated second division amount is lifted, and the load data and the operation completion signal are transmitted.

In this manner, the first to fifth divided amounts are lifted up one by one to complete one lifting work. (9) Each time one lifting operation is completed, the required number of lifting jacks are moved to another working hole 20, and the lifting jack is mounted for the next lifting operation. The current height of the concrete paving slab is measured in the same manner as described above, and the operations of (4) to (8) described above are repeated to lift up the entire subsidence area.

[0023] Even if the part that has been raised first,
If the final lifting height is not reached, repeat lifting work. That is, for example, as shown in FIG. 5, after performing the first uplifting over the entire area of the subsidence area to the parts of,
Separate the part of ~ and perform the second lift-up, and make the final height.

[0024]

As described above, the lifting method and apparatus of the present invention measures the current height data for each lifting jack position,
The planned height to be lifted is determined from that data, and the divided height data is created by dividing the height into several times. For each jack, this data is centrally managed by the centralized control computer device, By sending and receiving data to and from the jack control CPU every time, it is possible to repeat the lifting for each divided value, so that the lifting can be performed safely and efficiently under complete management. It is a thing.

In addition, a jack control CPU is provided for each jack.
Since the hydraulic unit can be moved as a set, hydraulic piping work is not required each time the jack is moved, and workability is significantly improved.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view showing an embodiment of the device of the present invention.

FIG. 2 is a bottom view of the reaction force receiving fitting of the above.

FIG. 3 is a plan view showing a work hole forming state in the method of the present invention.

FIG. 4 is a plan view showing the jack device and a wiring state.

FIG. 5 is a cross-sectional view showing an example of the order of embossing for carrying out the method of the present invention.

FIG. 6 is a flowchart showing working steps of an embodiment of the method of the present invention.

[Explanation of symbols]

 1 Concrete paving plate 2 Working hole 3 Working space 3a Roadbed 4 Reaction plate 5 Reaction force receiving metal fitting 10 Concrete plate lifting metal fitting 11 Cylinder body 12 Auxiliary cylinder 13 Concrete plate supporting piece 14 Female screw 15 Flange 16 Male screw 17 Pin 18 Locking Hole 20 Raised jack 21 Lamb chair 21a Window 22 Hydraulic cylinder 23 Ram 24 Extension rod 25 Tool 26 Lock nut 27 Entry / exit rod 28 Raised amount detection sensor 30 Jack drive device 31 Handwheel 32 Hydraulic unit 33 Jack control CPU 34 Lifting tool 35 Centralized control computer equipment

Claims (2)

[Claims] 1. A concrete pavement slab is provided with a plurality of work holes at certain intervals in a set area of the subsidence area, and each work hole is provided with a pavement siding jack. In the method for raising a submerged concrete paving slab to be raised, a jack control microprocessor (hereinafter referred to as CPU) for each of the above-mentioned jacks, and a central control computer device for communicating with all the jack control CPUs. Using, the pavement height of the work hole position for each upjack to which each of the jacks is mounted is measured in advance, and the uplift target value for each work hole position is set based on the measured value. A step of creating divided uplift value data in which each uplift target value is divided into the same number, and the divided uplift value data is input to the central control computer device, A medium control computer device sends a boost command for each split control value to each jack control CPU, and based on the command, each jack control CPU causes each jack to boost each split value. together thereby and a step of transmitting a jack up completion signal to the central control computer unit, wherein the central control computer device waits for reception of the first divided value min jack up complete signal from the jack controlling CPU, the following Of the submerged concrete paving slab characterized by repeating the process of transmitting a raising command for one division value and sequentially raising each division value in the same manner as described above to reach the target value. Uplifting method. 2. A work hole formed in a concrete paving slab,
A lowering jack for raising the concrete paving slab to intervene between the lower reaction board, a hydraulic unit for operating the raising jack, and a CPU for controlling the jack for controlling the hydraulic unit. In the lifting device for the submerged concrete paving slab, the hydraulic unit and the CPU for jack control are provided for each lifting jack, and the C for jack control is provided.
A lift-up device for a concrete paving slab, comprising: a centralized control computer device that transmits and receives data to and from a PU to control a jack control CPU.