A master thesis from Aalborg University
Estimation of actuator parameters for a Reaction Wall through Pushover Analysis
Author(s)
Term
4. term
Education
Publication year
2022
Submitted on
2022-06-09
Pages
163 pages
Abstract
A national seismic testing lab is to be built in Bulgaria. It will accommodate state of art seismic testing facilities one of which is a Reaction wall - Strong floor (RWSF). As a first step towards determining suitable actuators for it, an appropriate numerical simulation must be performed on a number of Prototypes made of different materials and composed of diverse lateral restraining systems (LRS). As part of the Thesis, the Prototype is chosen as a steel structure composed of two different LRS in both orthogonal directions - Moment Resisting Frame (MRF) and Concentrically Braced Frame (CBF). A linear seismic analysis is then carried out using the Modal Response Spectrum Analysis (MRSA) on a spatial computational model in Autodesk Robot. A brief sensitivity study is performed for determining the most conservative response spectra based on EC8. Both LRS are designed following the Capacity Design concept. The obtained results are validated and discussed. The SeismoStruct software is used to simulate a RWSF test by performing a planar nonlinear static (Pushover) analysis on the MRF and CBF. The non-linear response is verified and the necessary parameters for choosing an actuator are provided. The results are discussed with focus on uncertainties and the steps that follow.
Keywords
Documents
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