JPS5916066B2 - tank nojiyatsukiatsupuhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for jacking up a tank, in which the tank body is separated into a side plate and a bottom plate, and the tank body is jacked up separately.

Tanks are sometimes jacked up to correct tank foundations due to uneven settlement, etc., and to inspect and repair corrosion on the back of the tank bottom plate. Conventionally, when jacking up a tank, the entire outer surface of the tank is held in place. Since the tank was to be lifted up, it was necessary to reinforce the tank itself, and the reinforcement work and jack installation required a great deal of cost and construction time.

In contrast, this invention focuses on the fact that the side plate and bottom plate of a tank are connected by welding via an annular plate, etc., and it is relatively easy to separate or reconnect these parts. As mentioned above, the tank body is separated into a side plate and a bottom plate, which can be jacked up separately. The present invention aims to simplify the installation of the jack and to jack up a tank at low cost and in a short period of time.

That is, in FIG. 1, the jack brackets 1 are fixedly arranged at a plurality of locations inside the tank side plate 2, and the tank side plate lower part 6 is cut along the lower edge, or the annular plate 4 (or Remove the welded part T with the sketch plate 4) with a gouge O and separate the tank body into tank side plates and bottom plate.

Next, place the water receiver 8 on the annual plate 4 (or the sketch plate 4) and lower the jack 5...
Install each jack bracket 1...
and jack up the tank side plate.

Next, as shown in FIG.
5. A cutting portion 10 is created by making a cut from above, and a jig 12 attached to a lifting mechanism 11 is welded to bridge this portion. In this case, the lifting mechanism 11 is used as a jack, and the jig 1
2 is a receiving member that receives the jack. In addition, a pivot 14 is provided at the center of the i0 water receiving portion 13 on the open cut piece separated from the bottom plate, so that the lifting mechanism 11 of the jig 12 can be supported. The water receiving portion 13 is placed on the tank foundation 9 via the open cut piece, and serves as a jack seat. After attaching a large number of such jigs 12 to the bottom plate 3, the elevating mechanism 11
Jack up the bottom plate 3 by operating j5. In this case, by the time the bottom plate is jacked up, the peripheral edge 3 of the bottom plate 3
Of course, the annular plate (or sketch plate) can be separated from the bottom plate by cutting along line a or by removing the welded part 3b between the bottom plate 3 and the annular plate 4 by gouging or the like. .

In FIG. 2, reference numeral 15 indicates a handle of the elevating mechanism. The present invention uses the method described above to jack up the tank body and bottom plate, and performs repairs such as uneven settlement correction by inspecting the back side of the tank bottom plate, replenishing foundation sand, pouring mortar, etc.

After repair, operate and remove the parts in the reverse order, weld the cut parts, and restore the parts to their original condition. To correct uneven settlement directly below the annular plate (or sketch plate), follow the steps below. 1 Any jack on the annual plate (or sketch plate) 1
Remove the pieces, apply a load to the adjacent jacks, remove the annular plate (or sketch plate) at the corresponding location, and replenish the foundation sand and scrape up the foundation surface.

4. Return the removed annular plate (or sketch plate) to its original position, and 5. Reattach the removed jack.

6 Repeat steps 1 to 5 below for each jack on the annular plate (or sketch plate) to raise the level of the entire uneven settlement area.

After the entire jackdown is completed, the excised portion 10 in FIG. 2 is restored by patching it with a plate made of the same material and thickness as the excised portion. As described above, compared to the conventional method of reinforcing and jacking up the entire tank, the jacking method of the present invention requires almost no reinforcement, and also simplifies the large-scale jacking installation work around the tank's periphery. It can be shortened to a large width, making it possible to inspect and repair tanks economically and effectively.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams showing the order in which the method of the present invention is carried out, in which FIG. 1 is a side sectional view of jacking up the side plate of a tank, and FIG. 2 is a front sectional view of jacking up the bottom plate of a tank. It is a diagram. 1... Bracket, 2... Tank side plate, 3... Tank bottom plate, 4... Annular plate (or sketch plate), 5, 11...
... Jyatsuki, 9 ... Tank basics, 10.
...Removed part, 12...Jig.

Claims (1)

[Claims] 1 Arrange and fix a plurality of brackets 1 on the inner surface of the tank side plate, cut the lower part of the tank side plate and the peripheral edge of the tank bottom plate, separate the tank side plate and tank bottom plate from the annular plate (or sketch plate), and attach the above brackets to the annular plate. (or sketch plate) The tank side plate is supported by a jack whose upper surface serves as a jack seat, and the tank side plate is lifted up. Also, cutout parts are provided at multiple locations on the separated tank bottom plate, and a jack receiver is placed on the tank foundation below the cutout part. A seat is formed, and a receiving member is further fixed to the tank bottom plate, and a jack is disposed between the jack receiving seat and the receiving member, and the tank bottom plate is lifted up separately from the tank side plate by the jack. How to jack up a tank.