In this article, we propose an optimisation framework that can contribute to the prevention of premature failure or damage to building structures and can thereby strengthen their longevity. We concentrate on structures that are contaminated by chemical substances and that have strong destructive effects on the material. The aim of this contribution is a mathematical algorithm that allows the optimisation of a structure exposed to chemical influences and thus the assurance of the static load capacity. To achieve this, we present a coupled mechanical-diffusion-degradation approach embedded in a finite element (FE) framework. Furthermore, we integrate an optimisation algorithm to reduce material degradation. In this paper, we establish shape optimisation of a structure with a gradient based optimisation algorithm.

在本文中，我们提出了一个优化框架，有助于防止建筑结构过早失效或损坏，从而延长其使用寿命。我们专注于受化学物质污染并对材料具有强烈破坏性影响的结构。这一贡献的目的是一种数学算法，它允许优化暴露于化学影响的结构，从而保证静态负载能力。为了实现这一点，我们提出了一种嵌入有限元 (FE) 框架的耦合机械-扩散-降解方法。此外，我们集成了优化算法以减少材料退化。在本文中，我们使用基于梯度的优化算法建立结构的形状优化。