Movable Slab Foundation With Rotational Support Sleeve
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Solution Overview
Problem
Concrete slab foundations on soil are prone to damage due to uneven soil moisture and movement, leading to buckling or cracking.
Innovation Solution
A movable slab foundation system with vertically oriented support members and sleeves that allow axial movement and rotation, enabling the foundation to be raised above the ground, thereby isolating it from soil movement issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a concrete slab foundation is poured directly on soil, then construction is simple and cost-effective, but the foundation is vulnerable to damage from soil movement and moisture changes
Solution Approach 1:
The foundation system is divided into separate components: a concrete slab foundation, vertical support members (posts), and support sleeves. This segmentation allows the foundation to be elevated on discrete support points rather than being in direct contact with the soil, preventing soil movement from damaging the entire foundation structure while maintaining construction simplicity.
Solution Approach 2:
Vertical support members act as intermediaries between the concrete slab foundation and the soil. These support members transfer loads from the foundation to the ground through a controlled interface, isolating the foundation from direct contact with problematic soils and moisture, thereby improving foundation stability without complicating construction.
2Reliability
If vertical support members are made movable with rotation capability, then the foundation can be raised and adjusted to eliminate soil contact issues, but the device complexity increases
Solution Approach 1:
The vertical support members are designed with rotational capability within support sleeves, allowing the foundation to be dynamically adjusted to different heights. This dynamic feature enables the foundation to be raised clear of the ground to prevent soil contact issues, while the rotation mechanism itself remains relatively simple, involving basic friction-based engagement between the support member surface and sleeve interior.
Solution Approach 2:
The support sleeves are pre-installed in the ground before the concrete foundation is poured. This preliminary action allows the sleeves to be positioned at exact locations and orientations, simplifying the subsequent installation of vertical support members and reducing on-site adjustment complexity while ensuring proper foundation elevation and stability.
Data Source
AI summary
An embodiment of the system for forming a movable slab foundation as comprised by the present invention has a slab foundation, at least one substantially vertical support member, at least one support surface, and at least one support sleeve. The at least one supports sleeve surrounds the at least one support member and is encased within the slab foundation and is capable of movement axially along the length of the at least one support member. The at least one vertical support member is capable of rotation relative to the at least one support sleeve to restrict the movement of the at least one support sleeve downward relative to the at least one vertical support member, thereby maintaining the height of the at least one support sleeve and the slab foundation relative to the at least one support surface.