Methods and Tools for Design and Fabrication of shell-like and thin-walled Concrete Structures with Line Geometry. Short Title: Thin-walled Concrete Structures with Line Geometry.

从承载的观点来看，斜直纹面是有利的，因为它们基本上是负高斯曲率。由于直纹面是通过直线运动生成的，因此它们也是混凝土结构的良好选择：模板可以用热线切割机从聚苯乙烯泡沫中生产。此外，至少在直线等曲线的方向上，直线钢筋甚至预应力都是可能的。但在建筑业中，只有单层双曲面（冷却塔）和双曲抛物面（hypars）得到了广泛应用。此选择完全没有利用直纹曲面的各种可能性。此外，对这些形状的限制导致了具有重复外观的标准化组件（Silberkuhl系统）。相比之下，今天有一个非传统的解决方案的问题的需求，如何个人形式可以生产合理的条件？尽管它们的重要性，直纹曲面还没有正确地实现在常见的CAD软件。然而，在SPP 1542第一阶段处理的提案人Lordick的项目»轻型结构的线几何形状«现在提供了方便的数学基础。结果之一是一个找形工具（插件），它严格地在直纹曲面类中工作，但仍然可以选择集成载荷条件。现在我们的任务是使这个新工具适合应用，并将其与结构工程领域中已知的计算方法进行比较。在迭代过程中，应将该比较结果与其他找形和优化方法一起沿着纳入线几何模型。目的是建立一个工作流程，从输入几何开始，继续进行静态优化，最终导致创建模板，这是一个工作流程，使设计师能够根据口号“形式遵循力”塑造结构。我们的直纹曲面工具是新颖形状和结构的来源，我们希望为结构设计开发方便的概念。这些壳状和薄壁元件是注定的纺织品钢筋混凝土，有或没有预应力。我们希望通过实验来验证这一点，其中包括我们新壳体结构的典型边界条件和载荷情况。此外，应对主要受压薄壁结构的稳定性破坏进行数值分析和实验分析。根据极限状态的试验结果，对几何和物理非线性有限元计算结果进行评价。在项目中，申请人希望不仅屋顶，而且梁、桥墩和墙壁都能使用创新的建筑构件。这应由设计工作室和演示者进行验证。

From the viewpoint of load bearing, skew ruled surfaces are favourable because they are basically of negative Gaussian curvature. Since ruled surfaces are generated through the movement of a straight line, they are also a good choice for concrete structures: the formwork can be produced from polystyrene foam with a hot wire cutter. Furthermore, at least in the direction of the rectilinear isocurves, straight reinforcement or even prestress is possible.But in construction industry only hyperboloids of one sheet (cooling towers) and hyperbolic paraboloids (hypars) have been used extensively. This selection does not take advantage of the wide range of possibilities for ruled surfaces at all. Moreover, the limitation to those shapes led to standardized components with a repetitive appearance (Silberkuhl-system). By contrast, today there is a demand for unconventional solutions to the question, how individual forms can be produced to reasonable conditions? Despite their importance, ruled surfaces are not yet properly implemented in common CAD software. However, the project »Line Geometry for Lightweight Structures« by the proposer Lordick, processed during the first phase of the SPP 1542, now delivers convenient mathematical foundations. One result is a form-finding tool (plug-in), which strictly operates in the class of ruled surfaces but nevertheless has the option to integrate load conditions.Now we have the task to make this new tool suitable for application and compare it to the known computation methods in the field of structural engineering. In an iterative process, the results of this comparison, along with other form-finding and optimization methods, shall be incorporated into the model of line geometry. The aim is to establish a workflow, which starts from an input-geometry, continues with static optimizations, and finally leads to the creation of the formwork, a workflow, which enables the designer to shape the structure according to the slogan »form follows force«. Our tool for ruled surfaces is a source for novel shapes and structures, for which we want to develop convenient concepts for structural design. These shell-like and thin-walled elements are predestined for textile-reinforced concrete, with or without prestress. We want to verify this by experiments, where we include typical boundary conditions and load cases for our new shell structures. Additionally, thin-walled structures under predominant compression shall be analysed numerically and experimentally with regard to stability failure. We want to evaluate the results of geometric and physical nonlinear finite element calculations in the light of the test results for the ultimate limit state.Within the project the applicants expect innovative building components not only for roofs, but also for beams, piers, and walls. This shall be proofed by a design workshop and a demonstrator.