Column Shoe Stiffness via Monolithic Side Wall and Segmented Anchors
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Solution Overview
Problem
Existing column shoes for reinforced concrete columns lack sufficient stiffness and are not designed for columns with small cross sections, limiting their application and efficiency in material usage and installation.
Innovation Solution
A column shoe with a monolithic side wall member comprising two planar side plate sections at a narrow angle (40°-60°) and two separate back anchors, allowing for increased stiffness, reduced material usage, and easier installation, while maintaining secure fastening to the reinforced concrete column.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the column shoe uses a traditional design with separate lateral plates connected to the base plate, then it provides basic fastening functionality, but it lacks sufficient stiffness and has a large cross section that prevents use in small cross section columns
Solution Approach 1:
The patent merges the base plate and lateral plates into a single monolithic side wall member. This integration eliminates the need for separate components and their connecting joints, thereby increasing overall stiffness while reducing the total cross-sectional area occupied by the column shoe.
Solution Approach 2:
The patent transitions from a design with separate planar components to a three-dimensional monolithic structure. The side wall member is formed as a single piece with integrated base and lateral sections, optimizing material distribution to achieve higher stiffness with reduced cross-section.
2Strength
If the column shoe uses a monolithic side wall member with narrow angle between side plate sections, then stiffness is enhanced and material usage is reduced, but the design complexity increases
Solution Approach 1:
While the side wall member is monolithic, the back bond means is segmented into two separate back anchors. This segmentation simplifies the overall design by allowing independent optimization of each anchor and facilitates easier installation and alignment during construction.
3Ease of operation
If the column shoe uses two separate back anchors instead of a single back anchor, then force distribution is improved and installation is easier, but the number of components increases
Solution Approach 1:
The back bond means is divided into two separate back anchors that are fastened to the back surface of the side plate sections. This segmentation improves force distribution to the reinforcement structure and allows for easier alignment and installation during construction, while the anchors can be independently positioned and secured.
Data Source
Figure 1~2
Figure 3~5
AI summary
Presented is a column shoe for fastening reinforced concrete columns to a base. The column shoe comprises a bottom plate (1), a side wall member (3) fastened to the bottom plate (1) for providing a bolt casing (4) of the bottom plate (1) and the side wall member (3), main bonds (5), and back bond means (6). The angle α between the side plate sections (7) being between about 40° and about 60°, and the back bond means (6) comprising a back anchor (9) fastened to the back surface (12) of each side plate section (7) that face away from one another.