Composite Anchoring Profile for Corrosion-Resistant Subsoil Installation
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Solution Overview
Problem
Existing anchoring devices for building structures in civil engineering are either costly and time-consuming due to multiple work steps or require materials with structural disadvantages such as weak electrical insulation and poor corrosion resistance, especially in environments at risk of corrosion or electrical stress.
Innovation Solution
A device featuring an enveloping profile with a longitudinal channel for creating a hole in the subsoil, allowing a hardenable medium to be injected and forming a connection with a support member made of corrosion-resistant and electrically non-conductive materials, such as glass fiber reinforced plastic, to achieve a strong and durable bond with the subsoil while minimizing installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional self-drilling anchor made of steel is used, then the installation process is simplified and rapid, but the electrical insulation and corrosion resistance are poor
Solution Approach 1:
The support member is made from a composite material consisting of at least one plastic and at least one reinforcing fiber, providing both mechanical strength and electrical insulation while resisting corrosion. This composite construction resolves the contradiction by combining properties that steel alone cannot provide.
Solution Approach 2:
Different parts of the anchoring device have different material properties optimized for their specific functions. The enveloping profile provides mechanical strength for drilling, while the support member provides electrical insulation and corrosion resistance where these properties are most needed for load transfer and durability.
2Reliability
If multiple work steps are used for anchoring (drilling, injecting medium, inserting support member), then the bond quality is improved, but the construction progress is inhibited due to time consumption
Solution Approach 1:
The enveloping profile integrates multiple functions into a single component: it serves as the drilling tool, the anchor body, and the structural element for load transfer. This merging eliminates separate work steps while maintaining bond quality through the integrated design.
Solution Approach 2:
The enveloping profile is designed to create its own installation hole during the drilling process, eliminating the need for a separate drilling step. The support member is automatically positioned and secured through the hardening medium, reducing the need for additional manual intervention and maintaining quality while speeding up construction.
3Strength
If a steel enveloping profile is used for creating the hole, then the drill resistance is high, but the corrosion resistance and electrical insulation are poor
Solution Approach 1:
The enveloping profile is constructed from composite materials that provide sufficient mechanical strength and drill resistance while inherently offering corrosion resistance and electrical insulation. The combination of plastic matrix and reinforcing fibers achieves the required mechanical properties without the drawbacks of steel.
Solution Approach 2:
The material parameters of the enveloping profile are optimized to achieve the necessary drill resistance through the structural design and material composition rather than relying on steel's inherent properties. The composite material's mechanical properties are tuned to match or exceed steel's drill resistance while providing additional benefits of corrosion and electrical resistance.
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 solution enables rapid and efficient anchoring with high structural integrity, resisting corrosion and electrical conductivity, thus ensuring reliable load transfer and minimizing the impact of the enveloping profile's properties on the anchoring device's performance.
Implementation Method 1
a hardening medium (44) is propelled through the longitudinal channel (2) into an outer annular space (43) between the hole (41) and the enveloping profile (1)... a connection of the hardening medium (44) with the enveloping profile (1) and the support member (22) is formed after it has hardened
Data Source
Figure 1~4
Figure 5~7
Figure 8
AI summary
In a device and a method for anchoring a building structure to a load-bearing subsoil (42) with a load-bearing member (22) for transferring tensile and/or compressive forces from the building structure into the subsoil (42), the aim is to enable the simplest possible installation while complying with structural requirements, especially in environments susceptible to corrosion and/or electrically stressed.According to the invention, it is proposed that a shell profile (1) with a longitudinal channel (2) is used in which the support member (22) can be positioned, so that an inner annular space (32) is present between the shell profile (1) and the support member (22), wherein the shell profile (1) can be used to create a hole (41) in the ground (42) and has an opening at the hole bottom end (4) so that a curable medium (44) can be driven through the longitudinal channel (2) into an outer annular space (43) between the hole (41) and the shell profile (1), and wherein a connection between the shell profile (1) and the support member (22) can be established by the curable medium (44) in the inner annular space (32).