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.

从承载的角度来看，斜直纹面是有利的，因为它们基本上是负的高斯曲率。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一个很好的选择：模板可以用热线切割器从聚苯乙烯泡沫中生产出来。此外，至少在直线等值线的方向上，直线加固甚至预应力是可能的。但在建筑业中，仅有单片双曲面(冷却塔)和双曲抛物面(双抛物面)得到了广泛的应用。此选择根本没有利用直纹曲面的多种可能性。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，今天人们需要非传统的解决方案来解决这个问题，即如何将单个表格生产到合理的条件下？尽管直纹曲面很重要，但在常见的CAD软件中尚未正确实现。然而，由计划者Lordick在SPP 1542的第一阶段处理的轻量级结构的线条几何项目，现在提供了方便的数学基础。一个结果是形状查找工具(插件)，它严格地运行在直纹曲面类中，但仍然可以选择集成荷载条件。现在，我们的任务是使这个新工具适合于应用，并将其与结构工程领域的已知计算方法进行比较。在迭代过程中，应将这种比较的结果与其他形式发现和优化方法结合到线几何模型中。其目的是建立一个工作流程，从输入几何开始，继续静态优化，最终导致模板的创建，这是一个工作流程，使设计师能够根据口号？形式跟随力？来塑造结构。我们的直纹曲面工具是新形状和结构的来源，我们希望为结构设计开发方便的概念。这些壳状和薄壁构件注定要用于纺织钢筋混凝土，无论有没有预应力。我们希望通过实验来验证这一点，在实验中，我们包括了新壳结构的典型边界条件和载荷情况。此外，对于主要受压的薄壁结构，应对其稳定性破坏进行数值和试验分析。我们希望根据极限状态的测试结果来评估几何和物理非线性有限元计算的结果。在该项目中，申请者希望不仅是屋顶的创新建筑构件，而且还有梁、墩和墙的创新建筑构件。应由设计车间和演示人员进行验证。

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.