A consecutive modal pushover procedure for estimating the seismic demands of tall buildings

Seismic Performance of High-Rise Steel MRFS With Outrigger and Belt Trusses Through Nonlinear Dynamic Fe Simulations

“…Scaled shaking table tests [15,16] are at the moment promising analysis techniques for research applications but they are not so easily applicable for design office use. Therefore, high-definition or simplified finite element (FE) idealizations still represent an attractive tool to explore the seismic performance of these complex structural systems, as proposed by a number of research efforts available in literature on that subject [1][2][3][4][5][6][7][8][9][10][11]. If early studies [5][6][7][8][9][10][11] introduced simplifications in either FE representation or analysis technique, significant improvements have been more recently achieved [1][2][3][4].…”

“…Such buildings have a complicated structural system consisting of hundreds of different components, including those with complex features and large dimensions. When compared to medium-and low-rise buildings, tall moment resisting frame (MRF) structural systems present several distinctive characteristics in their behavior and peculiar aspects in their design, such as long periods and higher mode effects [1][2][3][4][5][6][7][8][9][10][11]. To ensure safe and economic design, construction and operation under various extreme loading conditions in particular earthquake events, detailed studies are required to predict their response, being the majority of current seismic Standards often unsuitable for them [12][13][14].…”

Nonlinear Static Analysis Procedures for Seismic Performance Evaluation of Existing Buildings – Evolution and Issues

“…It is expected to provide better results compared to the code-based NSPs due to inclusion of higher-mode effects. Various further Modal Combination Method (Kalkan and Kunnath, 2004) Upper-Bound Pushover Analysis (Jan et al, 2004) Multimode Pushover Analysis (Sasaki et al, 1996) Modal Pushover Analysis (Chopra and Goel, 2002) Modified Modal Pushover Analysis Adaptive Modal Pushover Analysis (Kalkan and Kunnath, 2006) Optimal Multimode Pushover Analysis (Attard and Fafitis, 2005) Consecutive Modal Pushover Analysis (Poursha et al, 2009) Load Vectors…”

“…However, this procedure, similar to the IDA procedure, is also tedious and offers little simplification over the detailed NLRHA procedure of a nonlinear structural model. Poursha et al (2009) proposed an analysis procedure referred to as the Consecutive Modal Pushover (CMP) in which the overall response quantities are estimated by enveloping the results of multi-stage and single-stage pushover analyses. It recommends a consecutive application of invariant load vectors corresponding to the first three vibration modes (in stages) in a single pushover analysis.…”

Accuracy of Advanced Methods for Nonlinear Static Analysis of Steel Moment-Resisting Frames

“…Kunnath [24] investigated simple modal combination schemes to indirectly account for higher-mode effects. In order to take into account higher-mode effects, Poursha et al [25] proposed the consecutive modal pushover (CMP) procedure that employs multi-stage and single-stage pushover analyses. In the multi-stage pushover analyses, modal pushover analyses are conducted consecutively with force distributions, using mode-shapes derived from the eigen-analysis of the linearly elastic structure.…”