Cruciform Tower Modular Sections Post-Tensioning
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Solution Overview
Problem
Existing tower assembly methods for wind-driven power generators require numerous connections, which are potential failure points and increase assembly time, while also being limited by transportation constraints and structural integrity requirements.
Innovation Solution
A modular tower design featuring stacked sections with interlocking blocks and post-tensioning strands that reduce the number of connections needed and allow for larger, taller structures that can be easily transported and assembled, using precast components and field-poured foundations to enhance structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple side-by-side segments are used to form each tower level, then structural integrity is improved, but the number of connections increases and assembly time increases
Solution Approach 1:
The tower is divided into discrete modular sections that can be manufactured separately and assembled on-site. Each section is a self-contained unit with standardized connection interfaces, allowing parallel manufacturing and simplified field assembly while maintaining structural integrity through the modular design.
Solution Approach 2:
Multiple structural functions are combined into single integrated components. The modular sections incorporate both structural support elements and connection mechanisms in unified designs, reducing the total number of separate connections required while maintaining the strength benefits of multi-segment construction.
2Strength
If multiple connections are implemented for each tower level, then structural integrity is improved, but the number of potential failure points increases
Solution Approach 1:
Multiple connection functions are merged into integrated connection systems. The modular sections use combined connection mechanisms that achieve both structural integrity and reliability by reducing the total number of discrete connection points while maintaining the necessary strength through unified design elements.
3Length of stationary object
If larger monolithic elements are used, then tower height and base size increase, but transportation constraints are exceeded
Solution Approach 1:
The tower structure is segmented into modular sections with dimensions optimized for standard transportation modes. Each module is sized to fit within conventional shipping constraints while the overall tower achieves greater height through vertical stacking of these transportable units, eliminating the need for oversized monolithic elements.
Solution Approach 2:
Smaller modular sections are designed to be stacked and nested vertically to form the complete tower structure. This nesting approach allows the tower to achieve greater overall dimensions than any single transportable component, with each module fitting within standard transportation envelopes while the assembled structure exceeds those constraints.
4Productivity
If precast components are used, then assembly speed is improved, but structural integrity may be compromised compared to monolithic construction
Solution Approach 1:
Tower sections are precast in controlled manufacturing environments where quality can be ensured, then transported and assembled on-site. The precasting action is performed in advance with precise manufacturing of connection interfaces, allowing rapid field assembly while maintaining structural integrity through factory-controlled quality standards applied before transportation.
Solution Approach 2:
The design merges precast manufacturing benefits with monolithic-like structural performance by using integrated connection systems that combine multiple functions in unified components. This merging allows the tower to achieve both the assembly speed of precast construction and the structural integrity approaching monolithic performance through reduced connection points and integrated design elements.
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 modular design reduces assembly time, increases tower height and base size, and minimizes potential failure points by using post-tensioning to provide structural stability while accommodating larger elements that fit standard transportation modes.
Implementation Method 1
A first number of the longitudinal post-tensioning strands are capped off at a top end of a first stacked section. A second number of the longitudinal post-tensioning strands are capped off at a top end of a top stacked section.
Data Source
AI summary
A tower includes a plurality of stacked sections extending in a longitudinal direction from a base section to a top section. At least one of the stacked sections includes a first block and a second block joined together. The first block and the second block have interlocking portions such that a first portion of the first block is located above a first portion of the second block in the longitudinal direction.