Shallow Mounted Vehicle Barrier with Reinforced Base Frame
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Solution Overview
Problem
Current fixed bollard barriers require deep foundations to meet crash testing requirements, making them unsuitable for locations with buried infrastructure, and their installation is complex and expensive due to the need for extensive site surveying and design engineering.
Innovation Solution
A shallow-mounted fixed vehicle barrier device with a base frame anchored in a foundation less than twelve inches deep, using rebar rods and mats for reinforcement, and a bollard system that remains in a passive position to prevent vehicular access, while allowing for decorative customization and installation without extensive site surveying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deep foundation (4-6 feet) is used for fixed bollard barriers, then crash testing requirements for 15,000 pound vehicle are met, but installation becomes impossible in locations with buried infrastructure and cost increases
Solution Approach 1:
The barrier system is divided into separate modular components: an above-ground barrier element and a shallow foundation assembly. This segmentation allows the barrier to achieve crash rating without requiring a single deep foundation, as the modular design distributes structural requirements across multiple shallower elements that can be installed around existing infrastructure.
Solution Approach 2:
The invention transitions from a vertical depth dimension (deep 4-6 foot foundations) to a horizontal spread dimension (wider shallower foundations less than 12 inches deep). The foundation assembly distributes loads laterally through a broader base plate and ground engagement surfaces, achieving structural integrity without penetrating deep into the ground where infrastructure exists.
2Ease of manufacture
If large bollard assemblies are created to address foundation depth issues, then installation in shallow foundations becomes possible, but site surveying and design engineering complexity increases significantly
Solution Approach 1:
The barrier system is designed as a universal modular assembly that can be installed in various locations without custom engineering. The standardized foundation assembly and barrier elements work together in consistent configurations, eliminating the need for detailed site-specific surveying and custom design that plagues large custom bollard assemblies.
Solution Approach 2:
The barrier system is pre-engineered and pre-assembled in standardized configurations before installation. The modular components are designed to work together in predetermined arrangements, allowing installers to deploy the system without performing extensive site surveying or detailed engineering calculations during the installation phase.
3Reliability
If traditional fixed bollards are used, then passive barrier protection is provided, but flexibility in installation locations is severely limited by infrastructure constraints
Solution Approach 1:
The barrier system incorporates adjustable and adaptable elements that allow installation in diverse locations. The modular foundation assembly can be configured in different arrangements (individual bollards, groups, or continuous barriers), and the above-ground elements can be adjusted in height and positioning to suit various site conditions and infrastructure constraints while maintaining protective functionality.
Data Source
AI summary
A shallow mounted fixed vehicle barrier device for prohibiting vehicular access to a facility or area. The shallow mounted fixed vehicle barrier device includes a barrier system having a passive position and a support system adapted to maintain the barrier system in the passive position. In the passive position, the barrier system prevents vehicles from passing by or through to the protected facility or area. The shallow mounted fixed vehicle barrier device always remains in the passive position and, therefore, never allows vehicles access to the secured facility or area, after installation. The barrier system includes a bollard and, optionally, a bollard sleeve. The support system includes a base frame attached to the bollard, such that the base frame is adapted to secure the bollard during vehicular attack. The shallow mounted fixed vehicle barrier device can be installed in a foundation having a depth of less than twelve inches.