Integrated structural analysis using building information models and heterogeneous adaptive isogeometric finite element methods

目前，参与规划过程的不同专家之间的数字合作不足。不同的顾问创建了不同的模型，这些模型在很大程度上包含了关于要建造的建筑几何形状的相同信息。其中一个模型的修改需要手动调整其他模型。究其原因，主要是历史技术发展造成的。有了这项研究建议，将在软件一级改善互操作性，从而使有关顾问之间的合作更容易，从而改善合作。共同基础将是一个建筑信息模型，该模型具有基于体积样条公式的一致几何数据，可供所有相关方使用。在建议的研究项目过程中，应开发方法，使用户能够基于该建筑信息模型进行直接的结构分析。因此，重点在于a)从IFC方案的EXPRESS数据类型生成等几何有限元模型。B)基于样条法的体积体的耦合，即为代表单个结构部件的体积体建立相容条件，这是数值分析所必需的。C)开发用于等距分析的各向异性误差估计器。误差估计器的方向性特别值得关注，以便为常规建筑结构中经常是壳状的结构部分制定有效的精化算法，这些部分仅由体积元素表示。C)基于先前开发的误差估计器，开发用于等距有限元模型的基于算法的各向异性自适应精化的适配方法。这些方法的结合形成了一个基于建立信息模型的完整的结构分析系统。建立信息模型和有限元的共同几何基础将改进，例如优化问题和流固耦合问题的解决方案。

The digital cooperation of different specialists involved in the planingprocess is currently insufficient. Different consultants create different models which largely contain identical information on the geometry of the building to construct. Modifications in one of the models require a manual adaptation of the other models. The reason for that is mainly caused by the historical technical development. With this research proposal an improvement of the interoperability is to be achieved on the software level, consequently leading to an easier and therefore improved cooperation between the involved consultants. Common basis will be a building information model with consistent geometry data based on volumetric spline formulations, which is available for all involved parties. In the course of the proposed research project methods shall be developed, that allow the user a straightforward structural analysis which is based on this building information model. Thereby, the focus is on a) the generation of isogeometric finite element models from the EXPRESS data types of the IFC scheme. b) the coupling of spline based volumetric bodies, i. e. the establishment of compatibility conditions for volumetric bodies representing individual structural parts, which is required for the numerical analysis. c) the development of anisotropic error estimators for isogeometric analysis. The directionality of the error estimators is of special interest to allow the formulation of efficient refinement algorithms for the often shell-like structural parts in regular building construction, which are represented by volume elements only. c) development of adaptation methods for an algorithm based anisotropic adaptive refinement of the isogeometric finite element model, based on the previously developed error estimators. The combination of the developed methods leads to an integrated structural analysis system, that is based on building information models. The common geometry basis of building information model and FEM will improve e.g. solutions for optimization and fluid-structure interaction problems.