Status : Verified
| Personal Name | delos Reyes, John Harvie O. |
|---|---|
| Resource Title | Parametric calibration of nonlinear multi degree-of-freedom flexure – shear model for time-history analysis |
| Date Issued | 3 February 2023 |
| Abstract | Nonlinear time-history analysis, the most advanced method in seismic analysis to date, is a rigorous and computationally expensive process. Issues regarding nonlinear time-history analysis include creation of the constitutive structural model, selection of the input ground motion, and the interpretation of the results. For a seismically active region, the Philippines has scarce strong motion ground records. In practice, spectrum compatible time histories were obtained by matching accelerograms of recorded earthquakes from site sources with similar characteristics to the design response spectrum based on the National Structural Code of the Philippines (NSCP 2015). Majority of the building population in the Philippines are low to medium-rise structures, which may be governed by both flexure and shear actions. The nonlinear multi degree-of-freedom flexures – shear (NMFS) mathematical model based on continuum model proposed by Miranda and Taghavi in 2005, and later developed into Multiple Degree-of-Freedom (MDOF) model by Xiong, et al. in 2015 discretizes a multistorey building into concentrated storey masses connected by shear and flexure springs. Modeling and calibration of the material backbone curves were based on height, period of vibration of the structure, and the resulting flexural – shear ratio, α_0, maintains generality and simplicity of the approach. The main objective of this study is to conduct a nonlinear time-history analysis using NMFS model of medium-rise structures calibrated using different period ratios. The analysis was conducted in Open System for Earthquake Engineering Simulations (OpenSees), an open-source framework for simulating structural response due to earthquake. The study culminated with the nonlinear time history analyses of the NMFS models of a local code compliant eight – storey shear wall frame structure and a full-scale seven – storey shear wall frame shake table specimen subjected to ground motions spectrally matche |
| Degree Course | MS Civil Engineering |
| Language | English |
| Keyword | nonlinear time history analysis; nonlinear multi degree-of-freedom flexure – shear model; flexure – shear ratio |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access