JP4984215B2 - Dissimilar settlement prevention method by iron plate footing method - Google Patents

Description

  The present invention relates to a non-uniform settlement prevention method by an iron plate footing system that constitutes a foundation of a building.

  Conventionally, with regard to the foundation of this type of building, first, 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.

  For this reason, if you want to obtain a sense of security by increasing the plus margin of the earth bearing capacity, it will be necessary to perform ground improvement, steel pipe pile construction, etc., which will require tremendous costs and increase the construction period. It has occurred.

  Therefore, in constructing a building foundation, the present invention eliminates the conventional ground improvement and steel pipe pile construction from the viewpoint of economic rationality, and in order to obtain the necessary ground strength, An object of the present invention is to provide a method for preventing uneven settlement by the iron plate footing method, which can reduce the load of the building on the ground by laying the iron plate, shorten the construction period, and greatly reduce the cost.

In order to achieve such an object, the invention according to claim 1 is configured such that when a foundation of a building is constructed, the bottom of the foundation is rolled with crushed stone, and the central portion of the building's pressure-resistant foundation is formed above the crushed stone. After laying an iron plate with a thickness of 9mm or more that is configured as large as possible from the bottom of the outer periphery of the pressure-resistant foundation in consideration of the necessary ground strength of the building, the building's pressure-resistant foundation is constructed on the top of the iron plate. The feature is that the load per unit area of the building against the ground is reduced .

  According to the first aspect of the present invention, an area where the pressure-resistant foundation is in contact with the ground is increased with respect to the weight of the building by laying an iron plate configured larger than the outer peripheral bottom surface of the pressure-resistant foundation at the lower portion of the pressure-resistant foundation of the building. As a result, the ground strength is improved, so that ground improvement as in the prior art becomes unnecessary, the construction period is shortened, and the cost can be greatly reduced.

  Embodiments of the present invention will be described below.

  1 to 3 show an embodiment of the present invention.

  FIG. 1 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. 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 prevention 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 7, and the iron plate 8 are illustrated on the bottom surface of the pressure-resistant foundation 4. However, the iron plate 5, the iron plate 7, and the iron plate 8 have a thickness of 9 to 16 mm or more. Further, it is desirable that the iron plate 5, the iron plate 7, and the iron plate 8 are configured to be as large as possible from the outer peripheral bottom surface of the pressure-resistant foundation in consideration of necessary ground strength.

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.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Ground surface 3 Foundation part 4 Pressure-resistant foundation 5 Iron plate 6 Crushed stone 8 Iron plate

Claims (1)

When building the foundation of the building, the foundation is crushed with crushed stone, and the foundation of the crushed stone is placed on the entire circumference except for the center of the lower part of the building's pressure-resistant foundation, taking into account the necessary ground strength of the building. After laying an iron plate with a thickness of 9mm or more that is as large as possible from the bottom of the outer periphery of the building, the pressure-resistant foundation of the building was built on the top of the iron plate, and the load per unit area of the building against the ground was reduced A method of preventing uneven settlement by the iron plate footing method.

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