Print Email Facebook Twitter Practical Engineering Design Tool for Vibration Sensitive Laboratory Building Structures Title Practical Engineering Design Tool for Vibration Sensitive Laboratory Building Structures: Development of a practical design tool based on a scientific model for an early design of vibration sensitive laboratory building structures excited by traffic induced vibrations for use in engineering practice Author Schut, Gerwin (TU Delft Civil Engineering and Geosciences; TU Delft CITG Section Building Engineering) Contributor Nijsse, Rob (mentor) de Oliveira Barbosa, João (graduation committee) Pasterkamp, Sander (graduation committee) Koekoek, Maarten (graduation committee) Degree granting institution Delft University of Technology Programme Civil Engineering | Building Engineering - Structural Design Project Early Design Dynamic Analysis of Building Structures Date 2019-10-02 Abstract The prediction of structural vibrations in vibration sensitive laboratory structures is a complex problem involving computationally heavy 3D models with long computational times. However, in the early design phases of a project long computational times are undesirable. Therefore the problem statement of this Master thesis concerns the development of a practical engineering tool which can be used in the early design phase of a vibration sensitive laboratory structure. The resulting tool is called EDDABuSgs (Early Design Dynamic Analysis of Building Structures by Gerwin Schut) and is the final product of the thesis research. The main focus of EDDABuSgs is on structural vibrations induced by heavy traffic at geological locations with soft soils (e.g. Amsterdam, the Netherlands). The thesis research concerns the four interrelating parts: source of vibrations (truck), transmission of vibrations (soil), soil-structure interaction and the structure (receiver of vibrations). The software FEMIX is used for computing the 3D soil response (source and transmission). The soil response is then used as input for EDDABuSGS, which computes the 2D structural vibrations by the aid of a Python script. The global structural response is computed from a rigid 3DoF system which is supported elastically by the soil and a pile foundation. The local structural response (ground floor) is computed from a flexible frame, composed of the analytical solutions of Euler-Bernoulli beam elements. The flexible frame is excited by the global 3DoF structural response by means of the boundary- and interface conditions. The results of FEMIX and EDDABuSgs show good agreement with the used verification projects. Several iterations have been made using EDDABuSgs to see how several parameters change the 2D structural response. The results of these iterations are well in line with general known theory about structural dynamics. From this Master thesis research one can conclude that soft soils excited by heavy traffic have a responsive frequency spectrum generally in-between 3 and 15 Hz. Therefore it generally holds that the eigenfrequencies of the global building response should be made relatively low (< 3 Hz), while the eigenfrequencies of the local structural elements (e.g. floors) should be made relatively high (> 12 Hz). Additionally, the resistance against vibrations (impedances) of the structural elements should to be as large as possible, which might sometimes contradict the preferred shift of the eigenfrequencies. Subject Structural DynamicsStructural engineeringSoil DynamicsTraffic induced vibrationsDynamic AnalysisEarly Design StagePythonSoil-structure interactionConcreteEigenfrequenciesImpedanceEDDABuSgs To reference this document use: http://resolver.tudelft.nl/uuid:ea2dc0fa-5cb7-4b3d-82cb-4fc3edb6af8c Embargo date 2020-10-02 Part of collection Student theses Document type master thesis Rights © 2019 Gerwin Schut Files PDF MSc_thesis_Gerwin_Schut_4 ... _09_23.pdf 19.62 MB Close viewer /islandora/object/uuid:ea2dc0fa-5cb7-4b3d-82cb-4fc3edb6af8c/datastream/OBJ/view