Traffic Barrier Anchoring With Angled Epoxy-Bonded Rods
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional traffic barrier anchoring systems require deep drilling and expensive equipment, are prone to frost heaving, threaten subsurface utilities, and provide inconsistent resistance to displacement, making them ergonomically difficult and unsafe.
Innovation Solution
A new anchoring system using short pins with an angled insertion method, involving a pliable insert and epoxy, which drills at an angle to minimize depth and relies on adhesive for secure anchoring, providing predictable resistance and easier installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If deep holes are drilled and pins are hammered in to secure the barrier, then the barrier anchoring strength is improved, but the installation complexity and equipment cost increase significantly
Solution Approach 1:
The patent replaces the mechanical hammering system with a chemical adhesive bonding system. Instead of using hydraulic hammers to drive pins deep into the ground, the invention uses epoxy adhesive to bond short pins to the barrier footer, eliminating the need for expensive impact hammer equipment while maintaining anchoring strength.
Solution Approach 2:
The patent changes the anchoring mechanism from friction-based mechanical resistance (deep pins relying on soil friction) to chemical adhesion (epoxy bonding). This parameter change allows the use of much shorter pins (18-24 inches vs. 3 feet) while achieving equivalent or superior anchoring performance.
2Strength
If deep holes are drilled for pinning, then the barrier anchoring strength is improved, but water infiltration paths are created leading to frost heaving
Solution Approach 1:
The patent extracts the pinning function from the deep subsurface and relocates it to a shallow depth. By using short pins bonded with epoxy, the system eliminates the need for deep holes that create water infiltration paths, thereby preventing frost heaving while maintaining anchoring strength.
Solution Approach 2:
The patent introduces epoxy adhesive as an intermediary substance that transfers the anchoring function from deep mechanical pinning to shallow chemical bonding. The epoxy acts as the mediating element that bonds the pin to the barrier footer, eliminating the need for deep ground penetration.
3Strength
If deep hole pinning is used, then the barrier anchoring strength is improved, but subsurface utilities are threatened
Solution Approach 1:
The patent extracts the anchoring function from the deep subsurface environment where utilities may be present and relocates it to a shallow depth. By using short pins that only penetrate 18-24 inches into the ground, the system eliminates the risk of damaging subsurface utilities while maintaining barrier security.
4Loss of time
If mid-length rods with epoxy are used instead of deep pins, then installation time is reduced, but barrier displacement resistance becomes inconsistent
Solution Approach 1:
The patent employs self-aligning features including a tapered pin that automatically centers itself in the drilled hole, and a footer port with positioning ribs that guide the pin into proper alignment. These self-service features eliminate the need for complex alignment procedures while ensuring consistent epoxy distribution and reliable bonding, thereby achieving both fast installation and consistent performance.
5Length of stationary object
If vertical drilling is performed for mid-length anchors, then the anchoring depth is sufficient, but drilling accuracy becomes difficult to maintain
Solution Approach 1:
The patent uses a tapered pin design that is asymmetric in shape, with the larger diameter at the top and smaller diameter at the bottom. This asymmetry creates a self-aligning effect where the tapered geometry naturally guides the pin into vertical alignment as it is inserted into the footer port and bonded with epoxy, eliminating the need for precise vertical drilling.
Solution Approach 2:
The patent incorporates preliminary alignment features in the form of positioning ribs in the footer port and a tapered pin geometry that pre-establish proper alignment before the epoxy bonding occurs. This preliminary action ensures correct positioning is achieved during insertion, eliminating the need for high-precision drilling.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces installation time and cost, prevents frost heaving, protects subsurface utilities, and enhances safety by offering consistent resistance to barrier displacement during impacts.
Implementation Method 1
A new anchoring system using short pins with an angled insertion method, involving a pliable insert and epoxy, which drills at an angle to minimize depth and relies on adhesive for secure anchoring
Data Source
AI summary
A system and method for anchoring a traffic barrier to a road is disclosed. The traffic barrier has a footer and a wall extending inward and upward from the footer to a top surface. Anchor recesses intersect the footer. A footer port extends through the footer beneath the anchor recess. An insert having a head portion and probe is positioned in the anchor recess and footer port. An insert port extends through the head portion and probe in angular relation to the longitudinal centerline of the barrier. The insert port aligns a drill for drilling a subsurface hole at a predetermined angle extending beneath the traffic barrier. Epoxy is inserted into the hole and a threaded rod is inserted through the insert port to be adhered to the road by the epoxy. A threaded fastener is connected to the threaded rod above the insert.