Development of Modal Pushover Analysis Method of Unsymmetric-Plan of Reinforced Concrete Structures Under Major Earthquake Motion

2012 ◽  
Author(s):  
Bambang Budiono ◽  
Lingga Kencana Octaviansyah
Keyword(s):  
Reinforced Concrete ◽  
Pushover Analysis ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Analysis Method ◽  
Modal Pushover Analysis ◽  
Major Earthquake ◽  
Earthquake Motion ◽  
Modal Pushover

scholarly journals Modal pushover analysis on reinforced concrete arch bridge to estimate seismic responses

2020 ◽  
Vol 156 ◽  
pp. 03005
Author(s):  
Lukman Murdiansyah ◽  
Robby Permata ◽  
Donald Essen
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Transverse Direction ◽  
Pushover Analysis ◽  
Design Code ◽  
Arch Bridge ◽  
Modal Pushover Analysis ◽  
Seismic Design Code ◽  
Earthquake Load ◽  
Modal Pushover

This paper presents an evaluation study of the performance of reinforced concrete arch bridge structures under earthquake load. The study is aimed to investigate the seismic performance of Wreksodiningrat Bridge, located in the province of Yogyakarta, Indonesia. This bridge is a three spans reinforced concrete arch bridge with a main span length of 75 m and two side spans with a length of 35 m, respectively. This study is a part of a large project carried out by the Ministry of Public Works to study the impact of the new 2016 Indonesia Seismic Design Code for Bridges (SNI 2833:2016). The main objective of this paper is to determine the displacement demands due to earthquake load based on the new seismic code design for bridges, SNI 2833:2016. In addition, demand capacity ratios (D/C) of the main structural components, such as the compression arch and main column (pier) at the fixed support, are also reviewed in this paper. The analysis was carried out using nonlinear modal pushover analysis. The arch bridge modeling is three dimensional, where structural elements such as beams, columns, and compression arches are modeled as frame elements. The plastic hinges are modeled as fiber hinges with unconfined and confined concrete material stress-strain relationship following Mander formula. The analysis result shows that the displacement demands of the bridge are 2.9 cm and 20 cm in the longitudinal and transverse direction, respectively. The D/C ratios of the compression arch due to demand earthquake load are 0.74 and 0.95 in the longitudinal and transverse direction of the bridge, while the D/C ratios of the pier are 0.15 and 0.80 in the longitudinal and transverse direction. Based on the above results, it is concluded that the studied bridge is able to withstand the seismic load requirements in the new Indonesia Seismic Design Code.

scholarly journals Lateral drift of reinforced concrete structures subjected to strong ground motion

1983 ◽  
Vol 16 (2) ◽  
pp. 107-122 ◽  
Author(s):  
Mete A. Sozen
Keyword(s):  
Reinforced Concrete ◽  
Ground Motions ◽  
Spectral Response ◽  
Concrete Structures ◽  
Response Analysis ◽  
Reinforced Concrete Structures ◽  
Nonlinear Dynamic Response ◽  
Lateral Drift ◽  
Earthquake Motion ◽  
Strong Ground

A simplified method is described for estimating lateral drift of reinforced concrete structures subjected to strong earthquake motion. The method is modeled after spectral-response analysis with simplifications based on observed characteristics of nonlinear dynamic response of reinforced concrete structures. Its application is limited to the types of structures and ground motions considered in its development. However, the method can be readily calibrated for other types of structures or modified for different foundation conditions.

scholarly journals Performance-based-plastic design method of reinforced concrete structure for operational performance level

2021 ◽  
Vol 331 ◽  
pp. 05010
Author(s):  
Jati Sunaryati ◽  
Nidiasari Nidiasari ◽  
Rifqi Yuliandri
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Design Method ◽  
Pushover Analysis ◽  
Concrete Structures ◽  
Performance Criteria ◽  
Reinforced Concrete Structures ◽  
Reinforced Concrete Structure ◽  
Base Shear ◽  
Plastic Design

Under major load earthquakes, reinforced concrete structures designed according to the current codes will experience an inelastic deformation which is difficult to predict and control. Performance-based plastic design (PBPD) methodology is applied forward to design reinforced concrete structures in this study. In this method, as performance criteria, the target drift and yield mechanisms are preselected. Based on the work-energy balance principle, the design base shear is given as earthquake level and calculated as work required to push the structure as monotonically load to the target drift. The load equals the energy needed by an equivalent single degree of freedom in the same state. The plastic design is utilized to design the desired yield mechanism. The method was adopted on a 10-story reinforced concrete structure with an earthquake load in lateral forces based on SNI 1726:2019 and the Performance-Based Plastic Design (PBPD) method. Pushover analysis was carried out where the structure was pushed to obtain lateral load resistance followed by yielding gradually until plastic deformation occurred collapse From the pushover analysis, the ductility value for SNI 1726:2019 is less ductile than analytical using the Performance-Based Plastic Design (PBPD) method

scholarly journals Influence of shear flexibility in structural shear walls on pushover analysis

Mechanika ◽  
2020 ◽  
Vol 26 (2) ◽  
pp. 146-152
Author(s):  
Mário Rui Tiago Arruda ◽  
Bruno Lopes ◽  
Mário Ferreira ◽  
Tadas Zingaila
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Seismic Design ◽  
Pushover Analysis ◽  
Concrete Structures ◽  
Shear Walls ◽  
Reinforced Concrete Structures ◽  
Structural Walls ◽  
Shell Elements ◽  
N2 Method

The aim of this work is to show the main differences which exist, taking in to account the influence of the type of finite element used, when performing pushover analysis of reinforced concrete structures. The non-linear analysis was performed using FE software SAP2000, and the results were extracted from models including Frame and Shell elements, respectively. Several reinforced concrete structures were modelled with Frame elements and Shell elements, which will be further presented. Therefore, it was possible to validate the results obtained from the analysis, also to identify certain restrictions according to the type of finite element used in the modelling of the resistant walls. In the first phase, three isolated structural walls were modelled with distinct geometries. The first one presents a rectangular shape, the second – “L” shape and the third one “U” shape. The application of pushover analysis through the different examples presented in this document, intends to validate the results obtained for the Shell elements. Subsequently, the same kind of analysis was performed on a building. These examples intend to show that the performance of ductility is strongly dependent from the type of element, which is not taken into account in the pushover analysis nowadays. N2 method was applied to all examples, in order to understand the differences in the structures seismic design, according to the type of element used in the modelling. The results are compared, and the differences are identified. As well as, the limitations of applicability of Shell elements in the modelling of structural walls were determined.

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