Seismic Performance Evaluation of Multistory Reinforced Concrete Moment Resisting Frame Structure with Shear Walls
TL;DR: In this article, the authors evaluated the seismic performance of a twelve-story reinforced concrete moment-resisting frame structure with shear walls using 3D finite element models according to such seismic design regulations as Federal Emergency Management Agency (FEMA) guideline and seismic building codes including Los Angeles Tall Building Structural Design Council (LATBSDC) code.
Abstract: This paper is intended to evaluate the seismic performance of a twelve-story reinforced concrete moment-resisting frame structure with shear walls using 3D finite element models according to such seismic design regulations as Federal Emergency Management Agency (FEMA) guideline and seismic building codes including Los Angeles Tall Building Structural Design Council (LATBSDC) code. The structure is located in Seismic Zone 4, considered the highest-seismic-risk classification established by the U.S. Geological Survey. 3D finite element model was created in commercially available finite element software. As part of the seismic performance evaluation, two standard approaches for the structure seismic analysis were used; response spectrum analysis and nonlinear time-history analysis. Both approaches were used to compute inter-story drift ratios of the structure. Seismic fragility curves for each floor of the structure were generated using the ratios from the time history analysis with the FEMA guideline so as to evaluate their seismic vulnerability. The ratios from both approaches were compared to FEMA and LATBSDC limits. The findings revealed that the floor-level fragility mostly decreased for all the FEMA performance levels with an increase in height and the ratios from both approaches mostly satisfied the codified limits.
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TL;DR: This review reveals the significance of SMA in civil infrastructures particularly, the enhancement of structural behavior and energy dissipation of external excitation, particularly seismic loads.
77 citations
TL;DR: In this article, the authors show that buildings located on hill slopes have highly irregular configurations in comparison with buildings on flat terrain, due to the limitations posed by the topographic conditions.
Abstract: Because of the limitations posed by the topographic conditions, buildings located on hill slopes have highly irregular configurations in comparison with buildings located on flat terrain. E...
33 citations
TL;DR: In this article, a nonlinear finite element model of the SRC frame structure was numerically developed using the OpenSees software, and the results of seismic fragility analysis using the component-based damage index proved to be more cost-effective and reliable.
Abstract: Nowadays, performance-based seismic design is the focus of earthquake engineering research, in which the seismic performance of a structure is mainly evaluated based on seismic fragility. However, the role of Engineering Demand Parameters (EDPs) on the seismic fragility analysis of Steel Reinforced Concrete (SRC) frame structures remains unclear. This paper presents results on the effects of EDPs on the seismic behavior of a plan-asymmetric SRC building. For this purpose, a nonlinear finite element model of the SRC frame structure was numerically developed using the OpenSees software. This finite element model was then validated using experimental results. The peak interstory drift ratios, as well as the component-based and material-based damage indices, were accordingly employed as EDPs. This study additionally shows seismic fragility curves for an SRC frame structure. The achieved results for the mentioned EDPs were both compared and analyzed. The findings indicated that the EDPs play a role in the seismic fragility analysis for the SRC frame structures. The fragility curves based on a damage index could display the probability of exceeding the ultimate limit states subjected to different seismic intensities, and also showed a similar manner with those based on peak interstory drift ratios. It can be concluded that for an SRC frame structure, the results of seismic fragility analysis using the component-based damage index proved to be more cost-effective and reliable.
33 citations
TL;DR: In this paper, two RC buildings with shear walls which had damages because of Van 2011 earthquake were considered and it is tried to determine the existing damages via nonlinear time history analysis using Van 2011 earthquakes acceleration data.
23 citations
TL;DR: In this paper, the authors dealt with seismic performance of base isolated structures with lead-rubber bearing (LRB) using incremental dynamic analysis (IDA), and the results showed the reduction of determined failure probability in fragility curves for two levels of performance of uninterrupted use and lateral safety.
Abstract: With improving technology, the idea of using energy dissipater equipment has been strengthened in order to control the structures response in dynamic loads such as wind and earthquake. In this research, we dealt with seismic performance of base isolated structures with lead-rubber bearing (LRB) using incremental dynamic analysis (IDA). For this purpose, 3- and 9-story buildings have been utilized in the SAC project undergoing 22 earthquake records which were far-fault. Plotting the fragility curve for various states of design time period and isolator damping of LRB, it is observed that, by increasing damping, the isolator has not been activated in small spectrum acceleration, which shows that the annual exceedance probability is increased in immediate occupancy (IO) performance level and decreased in life safety (LS) performance level. The results show the reduction of determined failure probability in fragility curves for two levels of performance of uninterrupted use and lateral safety. Likewise obtained results show that, with increasing design time period of isolator, the amount of failure probability is decreased rather than the isolator with smaller design time period, for both LS and IO states. And the isolator illustrates better performance.
21 citations
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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.
Abstract: 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. It 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. To establish a common frame of reference, the fundamental concepts are analysed, a unified terminology is proposed, suitable algorithms are presented, and properties of the IDA curve are looked into for both single-degree-of-freedom and multi-degree-of-freedom structures. In addition, summarization techniques for multi-record IDA studies and the association of the IDA study with the conventional static pushover analysis and the yield reduction R-factor are discussed. Finally, in the framework of performance-based earthquake engineering, the assessment of demand and capacity is viewed through the lens of an IDA study. Copyright © 2001 John Wiley & Sons, Ltd.
3,334 citations
01 Jan 1990
TL;DR: In this article, the authors present the requirements for dead, live, soil, wind, snow, rain, and earthquake loads, as well as their combinations, for building codes and other design documents.
Abstract: \IMinimum Design Loads for Buildings and Other Structures\N gives requirements for dead, live, soil, wind, snow, rain, and earthquake loads, as well as their combinations. The requirements described in this standard—which is a complete revision of ANSI A58.1-1982—are suitable for inclusion in building codes and other design documents. The Standard also includes a Commentary, which describes the basis of the requirements.
1,231 citations
TL;DR: In this paper, a set of procedures for creating fragility functions from various kinds of data is introduced, including actual EDP at which each specimen failed, bounding EDP, where some specimens failed and one knows the EDP to which each specimens was subjected, capable EDP where specimen EDPs are known but no specimens failed, and derived, where fragility function are produced analytically; expert opinion; and updating, in which one improves an existing fragility model using new observations.
Abstract: The Applied Technology Council is adapting PEER's performance-based earthquake engineering methodology to professional practice. The methodology's damage-analysis stage uses fragility functions to calculate the probability of damage to facility components given the force, deformation, or other engineering demand parameter (EDP) to which each is subjected. This paper introduces a set of procedures for creating fragility functions from various kinds of data: (A) actual EDP at which each specimen failed; (B) bounding EDP, in which some specimens failed and one knows the EDP to which each specimen was subjected; (C) capable EDP, where specimen EDPs are known but no specimens failed; (D) derived, where fragility functions are produced analytically; (E) expert opinion; and (U) updating, in which one improves an existing fragility function using new observations. Methods C, E, and U are all introduced here for the first time. A companion document offers additional procedures and more examples.
500 citations
TL;DR: In this article, the authors reviewed existing vulnerability relationships for reinforced concrete structures with a view to their application to a European (and similar) seismic risk assessment scenario, and derived new empirical fragility curves for reinforcedcrete building populations based on a data bank of 99 post-earthquake damage distributions observed in 19 earthquakes.
413 citations
TL;DR: In this paper, the authors considered the effect of structural component strength, stiffness, deformation capacity, and cyclic deterioration on the collapse risk of reinforced-concrete moment frame buildings, including both ductile and non-ductile frames.
375 citations
"Seismic Performance Evaluation of M..." refers background in this paper
...Fragility curve is the probability of exceeding a limit state for a structural system or component at damage state for a given ground motion intensities [14]....
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