Structural foundation

Abstract

The purpose of the invention is to provide a structural foundation in which a spiral stake for supporting the foundation is fixed in a stable manner without any horizontal displacement or vertical sinking, and the foundation can be easily installed on site without incurring transportation or installation costs. A structural foundation for supporting a structure or part of a structure, the structural foundation (3) having a foundation part (2) fixed to the ground using a spiral stake (1), wherein the foundation part (2) has a cylindrical steel tube (23) for guiding the spiral stake (1) and a horizontal pressure-receiving part (21) disposed so as to enclose the cylindrical steel tube (23), and the foundation part (2) and the spiral stake (1) are provided with fixing means (12, 22) for fixing the foundation part (2) and the spiral stake (1) in place in a state in which the spiral stake (1) has been inserted through the cylindrical steel tube (23) and the spiral stake (1) has been embedded in the ground.

Description

technical field [0001] The present invention relates to a foundation for structures, and more particularly to a foundation for structures having a foundation portion fixed to a foundation using screw piles. Background technique [0002] Conventionally, when erecting a pillar on the ground, a method has been employed in which a foundation provided on the ground is fixed with piles, the pillar is erected on the foundation, and the pillar is fixed with mortar or the like. In addition, the present applicant has particularly adopted screw piles made of twisted flat steel as piles for fixing foundations, and has put them into practical use in large quantities. [0003] As a specific example, as shown in Patent Document 1, screw piles are directly screwed into the ground as a foundation for pillars, and as shown in Patent Documents 2 to 4, holes are drilled in concrete blocks or concrete foundations placed on the ground. A method of fixing a concrete block or the like by inserting...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned screw piles can generate relatively large resistance to the force in the direction of pulling out the screw piles, but relative to the stress in the horizontal direction and the compressive force in the vertical direction acting on the screw piles, the mechanical strength is weak, so it will produce The following problems: the screw pile will be deformed in the horizontal direction and the vertical direction, the foundation is unstable, etc.

In addition, it takes time and effort to prepare the concrete foundation with holes for screw piles to be inserted, and the cost of transportation and installation also increases due to its size and weight.

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