JP4807622B2 - Dissimilar settlement settlement method by iron plate footing method - Google Patents

Description

  The present invention relates to a non-settlement subsidence correction method using an iron plate footing system for jacking up a non-sinking building.

  Conventionally, to build a building, the ground of the land to be built is first investigated, the earth strength is calculated, and then the foundation and pile are designed. In other words, if the earth bearing capacity is always greater than the weight of the building, the building cannot be confirmed.

  However, with regard to the required ground strength for the building, the weight of the building plus a margin is required. For this reason, it is often a question of how much plus margin you can afford.

  Of course, there is no problem as long as the ground is solid, but if there is not enough ground strength for the weight of the building, ground improvement and construction of steel pipe piles will be required. Furthermore, in the ground such as newly developed land and poorly soiled land, there is a part where the ground strength is partially low, so that there is a problem that uneven settlement is likely to occur.

  As described above, even when the building is constructed with sufficient consideration for the earth resistance, there is a problem that the building is inclined due to the secular change due to the secular change.

  Conventionally, when a building is tilted in this way, a new foundation is constructed in the immediate vicinity of the unsettled building, a jack is installed on the foundation, and the building is jacked up. Underpinning methods such as driving the pile to the support ground and installing a jack on the upper part of the steel pipe pile to jack up the building are known, but both methods are expensive and require long-term repair work. There was a problem such as needing.

  Therefore, the present invention is configured as a repair method when the building sinks unevenly, without relying on the conventional underpinning method, and at the initial stage of construction, the lower part of the building's pressure foundation is configured to be larger than the outer peripheral bottom surface of the pressure foundation. Providing a non-settled subsidence correction method using an iron plate footing method, such as reducing the loading load of the building against the ground by laying an iron plate and being able to use it as a jack effective bottom plate when jacking up the building It is an issue.

In order to achieve the above object, the invention described in claim 1 is directed to a dissimilar settlement substituting method for lifting a building by jacking up a dissimilarly subsidized building. When a steel plate with a thickness of 9 to 16 mm or more, which is configured as large as possible from the outer peripheral bottom surface of the pressure-resistant foundation, is laid on the entire circumference except for the load per unit area of the building against the ground, and when the building sinks uneven A rectangular iron plate with four bolt insertion holes for attachment to the side of the building's pressure-resistant foundation, and a rectangular lower part for contacting the upper attachment of the jack to the lower part of the rectangular iron plate An iron plate is attached to a square iron plate in an L shape, and a reinforcing triangular iron plate is attached to both ends of the L shape iron plate. The right bracket is fixed to the side part of the pressure-resistant foundation with four bolts, and the jack is placed on the upper surface of the iron plate laid on the lower part of the pressure-resistant foundation. Even when a building is jacked up using a plurality of jacks in contact with an iron plate, the main body of the plurality of jacks is an integral iron plate arranged all around the building excluding the center of the building's pressure-resistant foundation. It is characterized by jacking up the building in a stable state on the top .

  According to the invention described in claim 1, an iron plate configured to be larger than the outer peripheral bottom surface of the pressure-resistant foundation is laid on the lower portion of the pressure-resistant foundation of the building, the non-uniform subsidence correction metal fitting is fixed to the building, and a jack is installed on the upper surface of the iron plate, Since the building is lifted by pushing up the uneven settlement correction bracket fixed so as to be integrated with the building with the jack, it is possible to maximize the area of the jack effective bottom, as in the past In addition, underpinning methods such as driving steel pipe piles up to the support layer in the immediate vicinity of the unevenly settled foundation, solidifying the upper part with concrete, installing jacks, and jacking up the building are unnecessary, and the construction period is shortened This can lead to a significant cost reduction.

  Embodiments of the present invention will be described below.

  1 to 3 show an embodiment of the present invention.

  FIG. 1 a is a cross-sectional view of the building 1 and the foundation 3. An iron plate 5 configured to be larger than the outer peripheral bottom surface of the pressure-resistant foundation 4 is laid on the bottom surface of the pressure-resistant foundation 4, and the lower portion is composed of the crushed stone 6 that has been pressed.

  FIG. 1 b is an enlarged view of the base portion 3. The ground surface 2 is excavated to the position of the iron plate 5, and the non-settlement correction fitting 7 is fixed to the pressure-resistant foundation 4 with the bolts 8, and the jack 9 is inserted between the fixed non-settlement correction fitting 7 and the iron plate 5, so Lift the building by jacking it up. FIG. 1 c is a perspective view of the uneven settlement fitting 7.

  FIG. 2 is a plan view of the pressure resistant base 4 and the iron plate 7. Iron plates 7 are laid on the bottoms of the four corners of the pressure-resistant foundation 4.

  FIG. 3 is a plan view of the pressure resistant base 4 and the iron plate 7. An iron plate 8 is laid on the entire periphery of the bottom except for the center of the pressure-resistant foundation 4.

  As mentioned above, based on the embodiment, the dissimilar settlement correction method by the iron plate footing method according to the present invention has been described in detail, but the present invention is not limited to the above embodiment, and the gist of the invention is as follows. Even if various modifications are made without departing from the scope, it goes without saying that they belong to the technical scope of the present invention.

  1 to 3, the iron plate 5, the iron plate 11, and the iron plate 12 are illustrated on the bottom surface of the pressure-resistant foundation 4. However, the iron plate 5, the iron plate 11, and the iron plate 12 are 9 to 16 mm or more thick. Further, it is desirable that the iron plate 5, the iron plate 11, and the iron plate 12 are configured to be as large as possible from the outer peripheral bottom surface of the pressure-resistant foundation in consideration of the ground strength when jacking up.

  1 to 3, the iron plate 5, the iron plate 11, and the iron plate 12 are iron plates, but it is also possible to use a reinforcing steel containing concrete board.

It is sectional drawing of the building which concerns on embodiment of this invention, and a base part. It is the top view which showed the structure of the pressure | voltage resistant foundation and iron plate which concern on the embodiment. It is the top view which showed the structure of the pressure | voltage resistant foundation and iron plate which concern on the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Ground surface 3 Foundation part 4 Pressure-resistant foundation 5 Iron plate 6 Crushed stone 7 Dissimilar subsidence correction metal fitting 8 Bolt 9 Jack 10 Bolt hole 11 Iron plate 12 Iron plate

Claims (1)

In the sunk subsidence correction method to lift up the building by jacking up the sunk subsidence, the whole circumference excluding the center part of the bottom of the building's pressure-resistant foundation was constructed as large as possible from the bottom surface of the foundation of the pressure-resistant foundation. A steel plate with a thickness of 9 mm or more is laid to reduce the load per unit area of the building against the ground, and when the building sinks unevenly, four bolt insertion holes are drilled for mounting on the side of the building's pressure-resistant foundation. A rectangular lower iron plate for contacting the upper attachment of the jack to the lower part of the rectangular iron plate is attached in an L shape to the square iron plate, A triangular iron plate for reinforcement is attached to both ends of the shaped iron plate, and the non-uniform subsidence correction bracket constructed in this way is fixed to the side part of the pressure-resistant foundation with four bolts. When a jack is placed on the upper surface of an iron plate laid on the lower part of the pressure-resistant foundation, the attachment on the upper part of the jack is brought into contact with the lower iron plate formed in the L shape of the non-settled correction fitting, and the building is jacked up using a plurality of jacks wherein also the body of the plurality of jack key, a building in a state put on top of the integral iron plate disposed on the entire circumference of the building stable except the central portion of the lower breakdown voltage building foundation it has jacked up in Non-settlement correction method using the steel plate footing method.

Images