Concrete foundation structure and its construction method

Abstract

The present invention provides a concrete foundation structure capable of firmly fixing a precast concrete foundation to a foundation and a construction method thereof. The concrete foundation construction (10) includes a precast concrete foundation (16) having a protrusion (30) embedded in the foundation (G). An anchor plate (20) is arranged inside an excavation hole (18) provided in the foundation (G), and the precast concrete foundation (16) and the anchor plate (20) are connected by a connecting member (22). Inside the excavation hole (18), a backfill portion (24) is formed of a backfill material (94) containing solidified material and soil. Between the precast concrete foundation (16) and the backfill (24), a filling layer (26) is formed by a filling material (96) comprising a cured material. The precast concrete foundation (16) has a through hole (42) through which the connecting member (22) passes, and the filling material (96) constituting the filling layer (26) is filled from the through hole (42).

Description

technical field [0001] The present invention relates to a concrete foundation construction using a prefabricated concrete foundation and a construction method thereof. Background technique [0002] As the foundation for receiving the load of the building, concrete foundations such as strip foundations, slab foundations, and independent foundations are generally used. However, when constructing these foundations, it is necessary to assemble the formwork on site, insert reinforcement according to the structural design, pour concrete into the formwork, harden the concrete, and disassemble the formwork. Therefore, there is a problem that the construction period becomes long. In addition, these foundations are constructed manually on site, so there is a problem that errors are likely to occur in the precision of finishing. In addition, it is necessary to secure special vehicles such as skilled workers and concrete pump trucks, so there is a problem that construction costs becom...

AI Technical Summary

Problems solved by technology

[0005] However, the foundation structure described in the aforementioned Patent Document 1 is intended for bearing loads of equipment such as electric water heaters, and does not assume the use for bearing loads of buildings.

Therefore, when the foundation structure is used to bear the load of the building, the concrete foundation slab may sink, or the concrete foundation slab may move due to the force of the wind blowing to the building to pull out the underground anchor.

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