Journal Article10.1007/S12205-016-0738-4
Simplified multimodal pushover target acceleration method for seismic resistance analysis of medium-rise RC structures
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TL;DR: In this paper, the authors presented a simplified target acceleration method, which is a new modification of the multimodal pushover method, and exemplified on two medium-rise RC frame structures.
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Abstract: This paper presents a simplified target acceleration method, which is a new modification of the multimodal pushover method. Target acceleration is defined as the minimum acceleration of a base that leads to the ultimate limit state of a structure, presenting thus the lowest seismic resistance of the structure. Target acceleration is achieved by an iterative procedure, using a nonlinear numerical model of stability and load-bearing capacity of RC structures. A multimodal pushover analysis was performed for a linear combination of modes. The simplified target acceleration method is exemplified on two medium-rise RC frame structures. The influence of higher modes, particularly of the second one, has proven very significant. Validation of presented simplified target acceleration method was conducted through an incremental dynamic analysis. A comparison between the target acceleration obtained from the simplified target acceleration method and the failure peak ground acceleration obtained from the dynamic response of the structure exhibits very good agreement. The presented results demonstrate the ability of the simplified multimodal pushover target acceleration method to reliably assess the lowest seismic resistance of medium-rise RC structures.
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Citations
Accounting for the Spatial Variability of Seismic Motion in the Pushover Analysis of Regular and Irregular RC Buildings in the New Italian Building Code
Sergio Ruggieri,Giuseppina Uva +1 more
TL;DR: The effects of the new trends followed by some guidelines about pushover analysis, such as the recent 2018 release of the Italian Building Code, are investigated, with the aim of appraising the main differences between the traditional and new approaches and identifying the effectiveness and of the actual improvements achieved.
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A Study on the Effects of Vertical Mass Irregularity on Seismic Behavior of BRBFs and CBFs
TL;DR: In this article, the authors evaluated eight regular and irregular 10-story and 15-story steel structures with buckling-restrained braces frames (BRBFs) and concentric braced frames (CBFs) in terms of their responses to twelve far-field earthquakes.
3
Multimodal Pushover Target Acceleration Method Versus Dynamic Response of R/C Frames
Ante Mihanović,Ivan Balić,Boris Trogrlić +2 more
- 01 Jan 2013
TL;DR: In this article, a new multimodal pushover target acceleration method for the nonlinear analysis of reinforced concrete (R/C) frames subjected to seismic action is presented in chapter.
1
Performance Evaluation of a New NSP for Estimation of Seismic Demands of Nonlinear Irregular BRB Frames
TL;DR: In this paper, the authors combine the modified capacity spectrum method (MCSM) and modal pushover analysis (MPA) and propose a new nonlinear static method called MPA, MCSM.
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50 years of higher education in the field of civil engineering in Split : 1971-2021
22 Dec 2022
TL;DR: The Faculty of Civil Engineering, Architecture and Geodesy of the University of Split has a rich history spanning 50 years, encompassing teaching, research and projects.
References
•Book
Dynamics of Structures: Theory and Applications to Earthquake Engineering
Anil K. Chopra
- 01 Jan 1995
TL;DR: In this paper, the authors present a single-degree-of-freedom (SDF) system, which is composed of a mass-spring-damper system and a non-viscous Damping Free Vibration (NFV) system.
5.3K
Incremental dynamic analysis
TL;DR: Incremental dynamic analysis (IDA) is a parametric analysis method that has recently emerged in several different forms to estimate more thoroughly structural performance under seismic loads as mentioned in this paper, which involves subjecting a structural model to one or more ground motion record(s), each scaled to multiple levels of intensity, thus producing one (or more) curve(s) of response parameterized versus intensity level.
A modal pushover analysis procedure for estimating seismic demands for buildings
Anil K. Chopra,Rakesh K. Goel +1 more
TL;DR: In this paper, an improved pushover analysis procedure based on structural dynamics theory, which retains the conceptual simplicity and computational attractiveness of current procedures with invariant force distribution, is presented. But, the MPA procedure is not accurate enough for practical application in building evaluation and design.
A Nonlinear Analysis Method for Performance‐Based Seismic Design
TL;DR: In this article, a relatively simple nonlinear method for the seismic analysis of structures (the N2 method) is presented, which combines the pushover analysis of a multi-degree-of-freedom (MDOF) model with the response spectrum analysis of an equivalent single degree-offreedom (SDOF) system.
1.2K