Capped Intermediate Concrete Anchor Coupler for Independent Section Tensioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing post-tensioning systems face challenges in efficiently constructing long concrete members with multiple sections, as they require sequential curing and pouring of concrete sections, leading to time inefficiencies and complex access to stressing anchors.
Innovation Solution
A system comprising a connector anchor and coupler with frustoconical bores and spacers, allowing for simultaneous assembly and pouring of concrete sections by transmitting tensioning forces through a coupler body to a connector anchor, using mating threads and elastomeric spacers for sealing and retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sequential curing and pouring of concrete sections is used, then structural integrity is maintained, but construction time increases significantly
Solution Approach 1:
The concrete member is divided into multiple sections with intermediate anchors, allowing each section to be poured and cured independently. The coupler system enables separate tensioning of each section, eliminating the need for sequential curing of the entire member and significantly reducing total construction time.
Solution Approach 2:
The coupler is installed in advance within the concrete form before pouring the concrete section. This preliminary placement allows the concrete to be poured around the coupler, and once cured, the coupler is ready for immediate use in tensioning operations, eliminating setup time during the tensioning phase.
2Ease of operation
If intermediate anchors are used to divide concrete sections, then access to stressing anchors is improved, but device complexity increases
Solution Approach 1:
The coupler integrates multiple functions into a single component: it serves as both the connector between concrete sections and the anchorage point for the post-tensioning tendon. This merging eliminates the need for separate intermediate anchor devices, reducing overall system complexity while maintaining ease of operation.
Solution Approach 2:
The coupler is designed to perform multiple functions: it acts as a structural connector between concrete sections, provides anchorage for the post-tensioning tendon, and serves as the stressing anchor for applying tension. This multi-functionality reduces the number of separate components needed in the system.
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
Facilitates simultaneous construction of multiple concrete sections by allowing for independent tensioning of each section, reducing construction time and simplifying the process by eliminating the need for sequential curing and access to stressing anchors.
Implementation Method 1
elastomeric spacers for sealing and retention
Implementation Method 2
mating threads
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method and system for forming a post-tensioned concrete slab using a post-tensioning concrete anchor. The system may comprise a connector anchor including a bore that includes a first frustoconical portion, and the connector anchor may be adapted to bear on the post-tensioning concrete anchor. The system may also comprise a coupler comprising a connector and a coupler body that includes a second frustoconical portion that is oriented oppositely to the first frustoconical portion. The connector may have a bore therethrough and may be configured to receive the coupler body and to engage the connector anchor. A pocket-forming cap may releasably engage the post-tensioning concrete anchor; the pocket-forming cap may include a frustoconical wall, a gripping head, and a connector-receiving portion. The method may include using the system to form a second concrete section adjacent to a first concrete section before stressing the first concrete section.