Segmented High-Strength Concrete Ring for Punching Shear
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Solution Overview
Problem
Existing building structures face challenges in achieving high punching shear strength, particularly in structures with annular reinforcing elements made of concrete, where the construction process is complex and requires handling of large, monolithic elements.
Innovation Solution
The use of prefabricated segments arranged in a ring configuration for the reinforcement element, connected via a material with lower strength than high-strength concrete, allows for adjustable size and improved connection through grooves and protruding reinforcement elements, enhancing punching shear strength while simplifying the construction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a one-piece annular reinforcing element is used, then punching shear strength is improved, but manufacturing and handling complexity increases
Solution Approach 1:
The annular reinforcing element is divided into multiple separate segments that can be manufactured and handled independently, then assembled on-site to form the complete ring structure. This segmentation reduces the complexity of manufacturing and handling while maintaining the structural integrity and punching shear strength of the complete annular element.
2Stability of the object's composition
If a one-piece annular reinforcing element is used, then structural integrity is improved, but transport difficulty increases
Solution Approach 1:
The large annular reinforcing element is segmented into smaller, more manageable pieces that are easier to transport to the construction site. These segments are then assembled on-site to form the complete structural ring, ensuring both ease of transport and final structural integrity.
Solution Approach 2:
The segments are designed to nest within or alongside each other during transport, optimizing space utilization and reducing the overall volume required for transportation, while maintaining their individual structural integrity.
3Ease of manufacture
If fixed-size annular reinforcing elements are used, then manufacturing simplicity is improved, but adaptability decreases
Solution Approach 1:
The annular reinforcing element is divided into standardized segments that can be combined in different quantities and configurations to create rings of various sizes. This allows the same basic segment design to be used across multiple projects with different requirements, providing both manufacturing simplicity and size adaptability.
Solution Approach 2:
The system transitions from fixed-size rings to a dynamic, configurable ring structure where the number and arrangement of segments can be adjusted based on the specific project requirements, enabling size adaptation while maintaining standardized manufacturing processes.
Data Source
Figure 1~2
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Figure 6~7
AI summary
For a structure with a slab (2), a reinforcement element (4) made of high-strength concrete is provided to increase the punching shear strength. The reinforcement element (4) is ring-shaped and has an opening (11). It is provided that the reinforcement element (4) consists of several prefabricated segments (9) arranged in a ring around the opening (11).