Architectural Shape Optimization of Moving Dam on Rain River Downstream: An Ecosystem Cyclic Intervention

Naturally, the downstream of the rain river experiences periodic floods and droughts. This process is beneficial for the distribution of dissolved nutrients and minerals. Moving dams or barrages are generally built to minimize disasters. Even though they can control floods and droughts, the existence of dams adds new problems to the ecosystem. The barrage limits the natural flooding process, resulting in an imbalance in the river ecosystem. This imbalance harms ecosystems, impacting humans who depend on rivers for water sources and livelihoods. From these problems, the proposed design concept of a sustainable architectural dam through consideration of the design of the form, facade, aesthetics and the balance of the river ecosystem and humans on the Sembayat Barrage of Bengawan Solo River, Gresik Regency, Indonesia, as moving dam case. This concept collaborates the principles of architectural ecology and architectural biomimicry to produce a dam design that is friendly to the river ecosystem, including humans. In making it happen, Ansys tools are used to detect potential wind movement, and Fusion is used to maximize the structure with shape optimization. The design results obtained are in the form of a redesign of the dam by maximizing the downstream potential of the river while paying attention to the downstream river ecosystem through an architectural approach.

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