JPH02104866A - Lifting of heavyweight structure in case of high banking over wide area - Google Patents

Abstract

PURPOSE:To make lifting of an inhabited building possible by a method wherein the building, supported by piles, is lifted with jacks and is further supported by additional piles that are joined to the original piles, and filling is made to spaces between the additional piles and necessary height of the lifting is attained by repeating such works. CONSTITUTION:A building 1 is laid on and supported by a continuous footing 2 provided on piles 3 that are driven into hard stratum in the ground. Earth under the floor of the building 1 is dug and hydraulic jacks are installed there. The continuous footing 2 is lifted by the jacks by a certain height; for example by about 1.5 meters. And the continuous footing 2 is supported by connecting piles 5 that are joined to the tops of the piles 3 by welding. Then banking 6 is made after the jacks 4 are removed. By repeating such process of work several times, the building 1 is lifted up to a necessary height. As the earth filled with the banking subsides to a certain extent, additional filling must be made in advance in anticipation of such subsidence.

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a method for lifting a heavy object, such as a building, which is built on the ground where wide-area high embankment is to be performed, directly onto the embankment. .

(Conventional technology) It is extremely common to create a site by mounding earth on a sloping surface and moving existing houses, etc. onto this mound. As part of the bank protection work to prevent destruction by currents, a large-scale embankment was carried out in a wide area connected to the original levee, and the cross section of the levee was widened from the original position on the inside of the levee to the outside of the old levee. In addition to expanding the area, a construction method called the super levee construction method has been developed, in which buildings and roads that were built in low-lying areas along the existing levee are restored to their corresponding positions on the expanded levee.

(Problem to be solved by the invention) In this case, heavy objects on the ground to be filled with soil, such as buildings, need to be moved to another location, and then when returning to the top of the soil, it is necessary to If the height was large, it would not be easy, so in reality, the building would have to be rebuilt, which was a big disadvantage as it would be impossible to live in it during that time.

(Means for Solving the Problem) In contrast, the present invention raises a building on the current ground that is to be filled with soil to a certain height by interposing a jack on the lower surface of the foundation, and In order to transfer the load to the ground, short cylindrical connecting piles are added to the upper ends of the piles driven into the ground to support the lower surface of the foundation, and then, filling in the gaps between the added connecting piles and embanking over a predetermined area. .

This process is repeated to complete the embankment to the required height and the raising of the structure.

(Embodiments of the Invention) The order in which the method of the present invention is carried out will be explained with reference to the drawings. In Fig. 1, 1 represents a building on the current ground, and this building 1 has its cloth foundation 2 built in advance. It is mounted and supported on the upper end of a pile 3 whose tip is driven into the hard stratum of the ground.

FIG. 2 shows that the floor of the building 10 is excavated, jack mounting holes are formed at appropriate locations between the piles 30, and the cloth foundation 2 is installed as it is, for example, by using hydraulic jacks 4 provided in these jack mounting holes. 1.5 meters, and in that state, a short cylindrical connecting peg 5 is interposed in the space formed between the top of each peg 3 and the lower surface of the foundation 2, and connected to the top of the peg 3. Shows the state of addition. In this embodiment, steel pipe piles are used for the pegs 3 and the connecting pegs 5, and the mutual connection is performed by welding.

Figure 3 shows the state in which the hydraulic jack 4 has been removed and a mound 6 has been built on the current earth's crust to a height of, for example, about 1 meter.

FIG. 4 shows the state in which this work is repeated several times, the fifth filling is performed, and the 111 wall 7 is installed around the filling to complete the construction. In this case, an inclined surface may be formed instead of the retaining wall. After completion, the surface of the embankment will drop slightly due to compression due to the weight of the embankment itself and subsidence of the existing ground, and it is necessary to anticipate this and add additional embankment in advance.

(Effects of the Invention) As described above, this invention allows a building raised by a jack to be always supported by the connecting peg 5 by adding the connecting peg 5 to the upper end of the original peg 3. By applying the embankment 6 surrounding the 5, it is possible to prevent lateral stress from occurring at the connecting pile part, and furthermore, by applying the embankment 6 several times, the embankment 6 can be applied each time to cause quantitative settlement, that is, consolidation settlement. Since the embankment is stabilized starting from the part closest to the existing ground, the excess heap can be reduced, and thereby the height of the embankment can be maintained at a predetermined level even after completion. Because the building is lifted step by step at a pitch of 1 to 1.5 meters, the occupants of the building can remain living in the building, and business may have to be suspended, compared to the case where buildings are lifted several meters at a time. The advantage is that buildings can be taken over without having to do so.

In addition, although the above example shows a building in which the cloth foundation 2 is placed on piles 3 in advance, in the case of a building without piles 3, steel pipe piles are placed under the building as a support layer. After being press-fitted up to this point, it can be lifted up to a predetermined height using the method of the present invention. - move to the side, drive the pile 3, move on top of it and repeat the same process.

As described above, according to the present invention, it is possible to greatly reduce consolidation settlement that may occur when building a high earth mound over a wide area. Furthermore, there is no need to dismantle the building, and work can be continued with residents accommodated, making it extremely economical and efficient.

[Brief explanation of the drawing]

The drawings show the order in which the method of the present invention is carried out. Figure 1 shows the state before construction, Figure 2 shows the elevated state, and Figure 3 shows the first stage.
FIG. 4 is an explanatory diagram showing the state after the second filling has been applied, and FIG. 4 is an explanatory diagram showing the state after the construction is completed. 1. Building, 2. Cloth foundation, 3. Pile 4. Hydraulic jack, 5. Connecting pile 6. Embankment.

Claims (1)

[Claims] A building built on the ground to be filled is raised to the desired height by installing a jack under the foundation, and then a connecting peg is added to the top of the peg that supports the structure to support the structure. A method for lifting heavy objects in wide-area high earth embankment, characterized in that the connecting piles are filled with earth to form a mound, and the above-mentioned lifting and earth mounding operations are repeated several times to obtain the required height.