Browsing by Author "69cf33e9-2c92-4e71-842d-f8a178121396"
Now showing items 1-13 of 13
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A Review of Practice-Oriented Methods for Estimating Seismic Demands on Parts and Components
Haymes, Kieran; Sullivan, Tim; Chandramohan, Reagan (2023-04-19)A variety of methods for the estimation of demands on building parts and components have been proposed in international codes and the literature. These have been reviewed as part of recent research co-funded by QuakeCoRE, ... -
Development, verification, and validation of a buckling-fatigue steel material model
Mou, Junan; Tripathi, Mayank; Dhakal, Rajesh; Chandramohan, Reagan (2023-04-19)Currently, there are limited constitutive models available in finite element analysis packages that reliably capture the coupled effects of bar buckling and fatigue. However, such a model is needed for reliable estimation ... -
Hazard-consistent collapse risk assessment of steel moment frame buildings in Wellington
Gurung Shrestha, Srijana; Chandramohan, Reagan; Dhakal, Rajesh (2021-04-14)This study evaluates the seismic collapse risk of two modern ductile steel moment frame buildings designed as per the NZS 1170.5 seismic design standard. A four and twelve storey steel moment frame buildings located in ... -
Identifying vulnerable reinforced concrete buildings in Wellington using a simple assessment methodology
Balbirnie, Kieran; Chandramohan, Reagan; Pujol, Santiago; Wright, Joshua (2021-04-14)The application of a simple yet effective method to assess reinforced concrete buildings in New Zealand is discussed. It is proposed that this method be used to identify and prioritise the most vulnerable reinforced concrete ... -
Incorporating the influence of duration on dynamic deformation capacity in seismic assessment
Bhanu, Vishvendra; Chandramohan, Reagan; Sullivan, Timothy (2021-04-14)The dynamic deformation capacity of a structure is the peak storey drift ratio it can safely withstand without collapsing due to dynamic instability. In a previous study, the authors developed a robust procedure to compute ... -
Investigating the effect of stiffness on the seismic performance of RC structures
Pledger, Liam; Pujol, Santiago; Chandramohan, Reagan (2023-04-19)This study investigates the correlation between stiffness and the seismic performance of RC structures. Structural performance was compared for buildings affected by four different earthquakes, Tokachi-Oki (1968), Chile ... -
Method for the explicit consideration of ground motion duration in NZS 1170.5
Bhanu, Vishvendra; Chandramohan, Reagan; Sullivan, Timothy (2023-04-19)Recent studies have demonstrated that longer earthquake ground motion duration can reduce structural deformation capacity and increase collapse risk. This study introduces a method to explicitly account for such effects ... -
Modelling the out-of-plane buckling behaviour of BRBFs
Sistla, Saiteja; Chandramohan, Reagan; Sullivan, Timothy J. (2022-04-27)The objective of this study is to assess the impact of modelling the out-of-plane buckling behaviour of buckling-restrained braced frames (BRBFs) on their estimated seismic performance. A number of recent studies have ... -
Modelling uncertainty induced by plastic hinge length in lumped-plasticity analysis of RC columns
Mou, Julian; Tripathi, Mayank; Chandramohan, Reagan; Dhakal, Rajesh (2022-04-27)This study quantifies the influence of various plastic hinge length assumptions on the uncertainty in the response of reinforced concrete (RC) columns simulated using lumped plasticity models. Although several expressions ... -
Prediction of Demands on Non-Structural Components in Base-Isolated Structures
Haymes, Kieran; Sullivan, Timothy J.; Chandramohan, Reagan; Wiebe, Lydell (2022-04-27)This study examines seismic demands imposed on non-structural components within base isolated structures. Although several previous studies have focussed on the ability of base isolators to limit structural damage, very ... -
Source of numerical non-convergence in the analysis of bilinear SDOF systems
Morris, Nicholas; Chandramohan, Reagan; McGann, Christopher R (2023-04-19)Numerical non-convergence is an important factor impeding the research into and widespread adoption of the nonlinear dynamic analysis. Upon encountering non-convergence at an analysis time step when using an implicit time ... -
Strength requirements for non-structural components responding nonlinearly under earthquake excitation
Haymes, Kieran; Sullivan, Timothy; Chandramohan, Reagan (2021-04-14)This study develops a practice-oriented method to design non-structural components and their restraints to lower strengths than needed to remain elastic under earthquake ground motion by permitting nonlinear non-structural ... -
Validation of NZ small-magnitude ground-motion simulations using complex structural systems
Loghman, Vahid; Bradley, Brendon; Chandramohan, Reagan; Lee, Robin; McGann, Christopher (2021-04-14)This study assesses the need to consider complex structural models in ground-motion simulation validation. It develops a novel statistical framework to quantify the proportion of the differences in structural responses ...