Shallow-Mount Braced-Post Barrier for Underground Obstacles
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Solution Overview
Problem
Existing security barriers require deep foundations to resist high-energy vehicle impacts, which can be impractical due to underground obstacles such as rocks, utilities, and other features.
Innovation Solution
A shallow-mount security barrier apparatus comprising a base plate embedded in concrete, a barrier post extending upwardly from the base, and a brace that restricts relative movement between the post and the base, allowing for installation in shallower depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If deep foundations are used to resist high-energy vehicle impacts, then barrier strength and stability are improved, but installation difficulty and cost increase due to underground obstacles
Solution Approach 1:
The patent transitions from a traditional deep-vertical foundation approach to a shallow-mount configuration with oblique braces extending diagonally. This dimensional change in the bracing geometry allows the barrier to achieve comparable structural strength without requiring deep excavation, thereby avoiding underground obstacles while maintaining impact resistance capability.
Solution Approach 2:
The barrier system is segmented into distinct functional components: a shallow base plate embedded only in the surface substrate, a vertical barrier post, and separate oblique brace elements. This segmentation allows each component to be optimized independently - the base plate provides anchorage without deep excavation, while the oblique braces provide structural reinforcement without requiring continuous deep foundations.
2Stability of the object's composition
If deep concrete foundations are used, then barrier stability is improved, but installation time and complexity increase
Solution Approach 1:
The base plate is designed to be pre-assembled with the barrier post and braces in a controlled environment before field installation. This preliminary assembly reduces on-site construction time and complexity, as the entire barrier structure can be installed as a pre-configured unit rather than requiring sequential deep foundation work, concrete pouring, and curing time.
3Ease of manufacture
If shallow-mount configuration is used, then installation ease is improved, but barrier strength may be reduced
Solution Approach 1:
The oblique braces are configured to extend diagonally between the shallow base plate and the barrier post, creating a triangular bracing geometry. This oblique configuration efficiently transfers lateral impact loads from the post to the base plate through axial compression and tension forces in the braces, providing high structural strength despite the shallow embedment depth.
Solution Approach 2:
The barrier system combines different material properties and structural forms - the rigid base plate embedded in substrate material, the vertical steel post, and the oblique brace elements - to create a composite structure that achieves high strength-to-weight ratio and impact resistance without requiring deep foundations.
Data Source
AI summary
A barrier apparatus includes a barrier post mounted to a base and extending upwardly from the base. A brace of the barrier apparatus is configured to restrict relative movement between the barrier post and the base. The brace can be mounted to the base so that it extends upwardly and obliquely toward the barrier post. The brace can include block. A reinforcing tube can extend around the block. A mated connection to the front of the brace can include a first mating protrusion extending into a first mating hole, and a mated connection to the bottom of the brace can include a second mating protrusion extending into a second mating hole. The brace or another brace can extend into a rear corner positioned between the barrier post and the base.