JPS5927820B2 - Vibration-free and noise-free concrete structure demolition method - Google Patents

Description

[Detailed Description of the Invention] When it becomes necessary to dismantle the existing concrete exterior wall, leaving behind the pillars and beams, in order to ensure that the existing concrete walls do not interfere with business operations due to expansion work for a store, conventional construction methods do not cause vibrations. There is a concern that the noise will be generated, the dust will interfere with the sales office, and concrete pieces will fly around, causing overvoltage during curing.

A vibration-free and noise-free demolition method has also been proposed, but this method is inappropriate because it is intended for demolishing an entire building.

The present invention was proposed in order to eliminate such defects and provide a construction method capable of dismantling concrete structures without vibration or noise. A tensile steel rod fitted in the frame is inserted into a hole drilled in the concrete structure to be demolished and anchored, and then the hydraulic jack is actuated to remove the concrete structure by the pressure head at the tip. This relates to a vibration-free and noise-free concrete structure demolition method characterized by applying pressure to the concrete structure.

Since the present invention is configured as described above, in order to destroy the concrete structure to be demolished, a reaction force is generated inside the concrete structure as a reaction force of the force applied by the pressure head of the hydraulic jack. By gradually increasing the stress applied to the concrete structure, the concrete structure is destroyed in a nearly vibration-free and noise-free state.

As described above, according to the method of the present invention, only the required parts of the concrete structure are destroyed without vibration and noise by the operation of the hydraulic jack, and other parts are not affected. The present invention has many advantages, such as the fact that the concrete is not subjected to impact, so it is destroyed almost silently, dust generation is prevented, and concrete pieces are not scattered.

The present invention will be described below with reference to the illustrated embodiments.

Reference numeral 1 denotes a support frame, and a hydraulic jack 3 having a pressure head 2 at its tip is mounted on the support frame 1 so as to be movable in its longitudinal direction.

Moreover, a tensile steel rod 4 configured in the shape of a long bolt is inserted into both ends of the support frame 10.

In the present invention, holes a, b, C1d, etc. are drilled into the reinforced concrete wall W to be demolished using an ordinary drill.
・Drill holes h, insert embedded anchor fittings p into each hole, use the embedded anchor fittings p to attach the position fixing plate r of the drilling machine q to the wall surface, and use the drilling machine q to Holes A, B, C, D...
...Drill H.

Next, the breaking tool composed of the support frame 1, the hydraulic jack 3, and the tensile steel rod 4 is lifted up by a lifting machine, and the tensile steel rods 4, 4 are inserted into the through holes A, B, and the bearing plate 5, Natsuto 6
The destructive tool is attached to the reinforced concrete wall W by pressing it against the wall surface.

Next, the hydraulic jack 3 is operated to destroy the concrete wall around the pressure head 2.

Then, the hydraulic jack 3 is moved along the support frame 1 to destroy the next part of the reinforced concrete wall W.

Next, the tensile steel rods 4゜4 inserted into the through holes A and B are pulled out and inserted into other through holes, such as through holes C and D, or E and F, and tightened to hold the destructive tool horizontally or vertically. , and destroy the next part of the reinforced concrete wall W by the same operation as above.

After the same operation is repeated to destroy the reinforced concrete wall W, the useless concrete around the beams and columns is removed, the wall reinforcing bars are cut, and the cut reinforced concrete wall plates are carried out.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various designs without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional plan view showing the state of implementation of the demolition method of the present invention, and Fig. 2 is a front view showing the positions of through holes for inserting tensile steel rods and holes for inserting embedded anchor anchors in a reinforced concrete wall surface. ,
FIG. 3 is a longitudinal cross-sectional view showing the state of drilling a through hole for inserting a tensile steel rod into a wall. 1... Support frame, 2... Pressure head, 3... Hydraulic jack, 4... Tensile steel bar, W... Reinforced concrete wall.

Claims (1)

[Claims] 1. A tensile steel rod fitted into a support frame supporting a hydraulic jack equipped with a pressure head at the tip is inserted into a through hole drilled in the concrete structure to be demolished, and then anchored to the hydraulic jack. A vibration-free and noise-free method for dismantling a concrete structure, characterized in that the concrete structure is pressurized by a pressure head at the tip by operating a jack.