Topology optimization is rapidly reshaping how architects and structural engineers approach the design of high-rise buildings.
Once a niche method used primarily in aerospace and mechanical engineering, topology optimization has now become a central design strategy in the built environment, particularly in the context of tall structures subjected to complex lateral loads like wind and seismic forces.
This article explores the current state and emerging trends of topology optimization in structural systems.
Drawing on recent and seminal works, we examine how this method bridges form and function, enhances structural efficiency, and integrates seamlessly with parametric and computational design tools.
What is Topology Optimization?
Topology optimization (TO) is a computational design method that determines the optimal material layout within a given design space, for a set of loads and boundary conditions.
Unlike shape or size optimization, topology optimization allows for the creation of entirely new forms—often yielding non-intuitive, organic-looking structures that maximize stiffness-to-weight or performance-to-cost ratios.
In structural engineering, TO is increasingly used to generate bracing systems, core arrangements, and entire structural skeletons for high-rise buildings.
Bridging Architecture and Engineering: Aesthetic and Structural Synergy
In their influential study, Connecting Architecture and Engineering through Structural Topology Optimization, Beghini, Paulino, et al., demonstrate that topology optimization is not just a structural tool, it is also a design driver.
Their case studies show how architecturally expressive forms can emerge from purely performance-based criteria, leading to high-rise designs that are both visually striking and structurally efficient.
One standout example involves diagrid systems derived from TO frameworks that minimize material while providing excellent stiffness and load path continuity.
This research underscores the symbiosis of engineering performance and architectural intent, turning structural necessity into design opportunity.
Hybrid Methods: Continuum and Beam-Based Approaches
Stromberg et al. introduced a hybrid modeling strategy that combines continuum and discrete elements in topology optimization of braced frames DOI.
Their approach merges solid finite elements with beam/column representations to better capture both the macro- and micro-scale behavior of high-rise structural systems.
This method enables engineers to model lateral bracing configurations with high fidelity, optimizing not just material distribution but also connectivity and constructability.
The hybrid approach improves performance predictions and opens pathways for integrating TO into conventional design workflows.
Real-World Integration: Wind-Responsive Bracing via CFD and BESO
A recent advancement in this domain is highlighted in the 2025 study by Silva, Bono, and Greco, Application of Topology Optimization as a Tool for the Design of Bracing Systems of High‑Rise Buildings.
This work uses BESO (Bi-directional Evolutionary Structural Optimization) integrated with OpenFOAM-based CFD simulations to tailor bracing systems under actual urban wind conditions.
This represents a significant leap forward: not only are structural systems optimized for stiffness or stability, but they are also tuned to aerodynamic performance.
The ability to incorporate real wind flow data ensures that designs are context-responsive; vital for dense urban sites where wind loads are highly variable and nonlinear.
Parametric Tools and Wind-Driven Design Frameworks
Parametric design platforms are increasingly being fused with topology optimization tools.
The 2022 ASCE study, Parametric Structural Topology Optimization of High‑Rise Buildings Considering Wind, develops a framework for continuously optimizing high-rise structures based on real-time parametric feedback under wind loading.
Using this framework, designers can iterate between form, performance, and environmental response within a single parametric model and blur the lines between analysis and design.
This is particularly valuable for façade-integrated structural systems, outriggers, and core configurations.
A Growing, Interdisciplinary Field
Finally, Izumi et al. (2024) provide a wide-angle view of this growing field in their systematic review, A Review of the Optimization Methods of Structures in Architectural Design.
They classify recent advances in topology, shape, and size optimization, mapping the expanding interface between architecture and structural engineering.
This review highlights the growing potential of topology optimization to evolve into a multidisciplinary framework, though its full integration into architectural design practice remains limited.
For professionals, the challenge lies not only in adopting these tools but also in integrating them into collaborative workflows that respect architectural intent and engineering rigor.
As computational power increases and modeling interfaces become more intuitive, topology optimization is poised to become a mainstream component of the structural engineer’s toolkit.
