UHPC Wind Turbine Tower Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wind turbine towers, particularly those made of steel, face challenges such as high transportation costs, practical limitations due to size constraints, vulnerability to fatigue, and limited design life, which become more pronounced when taller towers are required for higher elevations.
Innovation Solution
The use of ultra-high performance concrete (UHPC) in wind turbine tower designs, including modular lattice structures and shell towers, to create cost-effective, durable, and efficient towers that can support turbines at hub heights of 80 meters or more, while minimizing material usage and allowing for potential reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If steel towers are used to support wind turbines at higher elevations, then the turbines can access higher wind velocities and produce more power, but transportation costs increase significantly and practical limitations arise due to size constraints
Solution Approach 1:
The patent changes the material parameter from steel to ultra-high performance concrete (UHPC), which has higher compressive strength and durability. This material substitution allows towers to be constructed with optimized cross-sectional areas, reducing the quantity of material needed while maintaining structural integrity at heights of 80 meters or more, thereby reducing transportation costs and practical limitations
Solution Approach 2:
The patent employs UHPC as a composite material system that combines cementitious binders with steel fibers and silane-modified reactive powder. This composite structure provides superior mechanical properties including high compressive strength (21.8 ksi or 150.3 MPa and above), enhanced ductility, and improved fatigue resistance, enabling cost-effective construction of tall towers without the transportation constraints of traditional steel
2Productivity
If steel towers are extended to greater heights, then higher wind velocities are accessed and power production increases, but vulnerability to fatigue increases and design life is limited
Solution Approach 1:
The patent changes the material parameter from conventional steel to ultra-high performance concrete (UHPC), which exhibits superior fatigue resistance and durability. UHPC towers can withstand cyclic wind loads over extended periods without the fatigue degradation that plagues steel structures, thereby extending design life while maintaining the capability to access high wind velocities at elevated heights
Solution Approach 2:
The patent inverts the traditional approach by creating a tower structure that is intentionally designed to outlast the wind turbine itself. The UHPC tower is engineered with such durability that it can support multiple turbine replacements over its service life, effectively making the tower a long-term infrastructure investment rather than a disposable component
3Productivity
If taller steel towers are constructed, then hub heights of 80 meters or more are achieved, but construction costs and material requirements increase significantly
Solution Approach 1:
The patent changes the material parameter from steel to ultra-high performance concrete (UHPC), which has higher compressive strength and allows for more efficient structural design. This enables the construction of towers at hub heights of 80 meters or more with reduced material quantities compared to steel, as UHPC can achieve the same or superior structural performance with optimized cross-sectional areas and wall thicknesses
Solution Approach 2:
The patent applies local quality optimization by varying the thickness and reinforcement of UHPC tower sections along the height of the structure. The tower design incorporates thicker sections at the base where loads are highest and progressively thinner sections toward the top, optimizing material usage while maintaining structural integrity and achieving cost-effective construction of tall towers
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
UHPC towers offer reduced material usage, lower transportation and construction costs, increased longevity, and the ability to efficiently produce energy, with designs that can outlast multiple turbine lifecycles and be easily reassembled at different locations, addressing the limitations of traditional steel towers.
Implementation Method 1
UHPC towers offer reduced material usage, lower transportation and construction costs, increased longevity
Implementation Method 2
UHPC towers offer reduced material usage, lower transportation and construction costs, increased longevity
Implementation Method 3
each of said plurality of modular components being pre-stressed
Implementation Method 4
a vertically extending lattice structure formed of a plurality of modular components, wherein each of said plurality of modular components being pre-stressed
Data Source
AI summary
A wind turbine tower system is provided which includes a wind turbine tower with a height of at least 80 meters, said wind turbine tower comprised of ultra-high performance concrete and a wind turbine mounted on the wind turbine tower. The wind turbine tower system may include a vertically extending lattice structure formed of a plurality of modular components, wherein each of said plurality of modular components being pre-stressed. The tower may also be formed using UHPC shells.