Holder for Tensioning Element Installation in Anchor Blocks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for installing tensioning elements in anchor blocks, such as those used in cable-stayed bridges, are complex and limited by the need to detach brackets from tensioning elements and rethread traction cables through small openings, which complicates the process and reduces stability.
Innovation Solution
A method that allows the tensioning element to be inserted into the anchor block without detaching the bracket, using a holder with a guide unit and separate winches for controlled movement, enabling the tensioning element to be moved to the anchor block without rethreading the traction cable through the opening, and a holder designed to accommodate multiple tensioning elements for simultaneous installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bracket is attached to the tensioning element and both are pulled through the through-opening of the anchor block, then the tensioning element can be installed, but the size of the bracket is limited and the stability of the attachment is reduced
Solution Approach 1:
The system is divided into separate functional components: the bracket remains attached to the tensioning element for installation, while a separate guide unit is introduced to facilitate passage through the opening. This segmentation allows the bracket to be optimally designed for stability without being constrained by opening size requirements.
Solution Approach 2:
A guide unit is introduced as an intermediary component that assists the bracket and tensioning element assembly in passing through the through-opening. The guide unit acts as a mediator that enables the installation process without requiring the bracket itself to be small enough to fit through the opening.
2Productivity
If the traction cable is threaded through the passage opening for each installation process, then the tensioning element can be installed, but the process becomes more complex
Solution Approach 1:
The guide unit is prepared and positioned in advance before the bracket and tensioning element assembly is pulled through. This preliminary action of placing the guide unit facilitates the subsequent passage operation, eliminating the need to rethread the traction cable through the opening for each installation.
Solution Approach 2:
The guide unit serves as an intermediary that simplifies the installation process by providing a guided path through the opening, eliminating the complex rethreading operations that would otherwise be required for each tensioning element installation.
3Adaptability or versatility
If the bracket is designed to fit through the through-opening together with the tensioning element, then installation is possible, but the stability of the attachment is compromised
Solution Approach 1:
The system separates the functions of attachment stability and passage facilitation into different components: the bracket is designed for stable attachment to the tensioning element, while the guide unit handles the passage through the opening. This allows the bracket to be optimally sized for stability without being constrained by opening dimensions.
Solution Approach 2:
The guide unit acts as an intermediary that enables the bracket and tensioning element assembly to pass through the opening without requiring the bracket itself to be small enough to fit through, thereby preserving the bracket's optimal design for stable attachment.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method for installing a prestressing element (114) in an anchor block (118), in which the prestressing element (114) is attached to a holder (128), the holder (128) is moved to the anchor block (118), the prestressing element (114) is introduced into a through-opening (118b) of the anchor block (118), and the prestressing element (114) is fixed to the anchor block (118). According to the invention, the holder (128) is attached to the prestressing element (114) at a distance which is selected so that the length of the projection (114b) of the prestressing element (114) on the side of the holder (128) facing the anchor block (118) is greater than the length of a portion of the prestressing element (114), which is required for introducing the prestressing element (114) into the through-opening (118b) and fixing the prestressing element (114) to the anchor block (118). The invention also relates to a holder (128), in particular for carrying out said method.