Re-usable and flexible GFRP formwork for the production of double curved concrete lightweight elements

开发了一种灵活的模板，用于具有曲率半径的定义修改的单弯曲和双弯曲立面元件的成本效益生产，以允许具有类似曲率状态的元件的可重复使用。因此，可以允许材料和资源有效的生产。利用DFG SPP 1542关于多层玻璃纤维增强塑料（GFRP）模板各向异性材料性能的现有研究成果，实现了此类模板的实际应用。在前一个项目中，通过修改GFRP层压板的弯曲刚度值，实现了具有几个曲率状态的表面的柔性对齐。在知识转移项目中，第一个目标是开发一个具有互连组件测量（摄像系统）的模板系统，用于重新调整模块化薄壁纤维和纺织品增强混凝土元件。我们的目标是实现清水混凝土、精确的前面板对准和力传递元件的定义布置。该项目的第二个目标是将数据处理从设计特定的体积模型转换为模板特定的线模型，该模型可以转移到可控子结构上。对GFRP模板外壳和智能控制系统进行评级是TU切姆尼茨，SLK的任务。可控子结构的构造和验证由TU切姆尼茨（LBW）实现。此外，制造技术以及实验验证（包括光学测量和模板/混凝土设置的重新调整）由工业合作伙伴Fiber-TECH Group和Betonwerk Schuster GmbH执行。最后，一个灵活的多层玻璃钢模板和基础设施（如交通路线元素，电缆管道）的代表性覆盖元素的原型实现。

A flexible formwork for a cost efficient production of single and double curved façade elements with defined modification of the curvature radius is developed to allow a repeatable usage for elements with similar curvature states. Thus, a material and resource efficient production can be permitted. The current results of the DFG SPP 1542 about anisotropic material behavior of multi-layered glass fiber reinforced plastic (GFRP) formworks are used to realize the practical application of suchlike formwork. In the former project a flexible alignment of surfaces with several curvature states was achieved by modification of the GFRP laminate lay-up with respect to the bending stiffness values. Within the knowledge transfer project the first goal is the development of a formwork system with interconnected component measurement (camera system) for a readjustment of modular, thin-walled fiber and textile reinforced concrete elements. Ambitions are the realization of a fair-faced concrete, a precise front panel alignment and a defined arrangement of the force transmission elements. The second goal of the project is the data processing from a design-specific volume model into a formwork-specific line model which can be transferred onto the controllable substructure. Rating the GFRP formwork shell and the intelligent control system is task of the TU Chemnitz, SLK. Construction and validation of the controllable substructure is realized by the TU Chemnitz (LBW). Additionally, the manufacturing technology as well as the experimental verification including the optical measurement and readjustment of the formwork/concrete setup is executed by the industrial partners FIBER-TECH Group and Betonwerk Schuster GmbH. Finally, a prototype of a flexible multi-layered GFRP formwork and a representative cover element for infrastructure (e.g. traffic route elements, cable ducts) are realized.