Comparison of ASCE/SEI standard (2010) and modal pushover based ground motion scaling procedures for pre-tensioned concrete bridges

Download

index.pdf

Date

2015

Author

Özgenoğlu, Müge

Metadata

Show full item record

Item Usage Stats

173
views

145
downloads

The seismic design and evaluation of large bridges is a demanding task owing to the significant size and the structural characteristics of these systems. Although elastic analysis methods are regarded as sufficient for common, uncritical bridges; complex analysis methods such as non-linear time history analysis (NTHA) are often required for non-standard and/or important bridges. The selection of the ground motions that will be used in non-linear time history analysis is a crucial task in this regard as the results of time history analyses will show a wide variability according to the utilized earthquake record. Furthermore, in order to predict the expected demand in accordance with the seismic hazard conditions of the site, the selected ground motions are usually modified by the scaling procedures. A separate but equally important goal is to obtain the engineering demand efficiently with a small number of representative motions. Within this context, in this study, the relative performance of two ground motion scaling methods, namely the Modal Pushover Based Scaling (MPS) and ASCE/SEI Standard (2010) procedures, are investigated using a number of ground motion sets selected from a suite of 35 ground motions for the NTHA of a representative large bridge, the Demirtas Viaduct. The system, composed of 28 spans and various expansion joints, is idealized with two different analytical models. Three different target earthquake levels are used for both models in order to determine the effect of the scaling of the ground motions at different hazard levels. The final goal of the study is to establish the sensitivity of the demand parameters and the efficiency of the ground motion scaling techniques considering different target demand levels and structural models.

Subject Keywords

Bridges, Bridges, Bridges, Earthquake resistant design.

URI

http://etd.lib.metu.edu.tr/upload/12618759/index.pdf
https://hdl.handle.net/11511/24640

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

COMPARISON OF ASCE/SEI STANDARD (2010) AND MODAL PUSHOVER BASED GROUND MOTION SCALING PROCEDURES FOR PRE-TENSIONED CONCRETE BRIDGES Özgenoğlu, Müge; Arıcı, Yalın (null; 2017-11-01) The seismic design and evaluation of large bridges is a demanding task owing to the significant size and the structural characteristics of these systems. Although elastic analysis methods are regarded as sufficient for common, uncritical bridges; complex analysis methods such as non-linear time history analysis (NTHA) are often required for non-standard and/or important bridges. The selection of the ground motions that will be used in non-linear time history analysis is a crucial task in this regard as the ...
Reliability based evaluation of seismic design of Turkish bridges by using load and resistance factor method Yılmaz, Seyit Alp; Caner, Alp; Department of Civil Engineering (2014) This study aims to evaluate the safety level of seismic design of Turkish highway bridge pier columns with respect to reliability theory. Evaluation of bridges was performed for four different codes of American Association of State Highway and Transportation Officials (AASHTO). Reliability indices were calculated for AASHTO Load and Resistance Factor Design 2010 (AASHTO LRFD 2010), AASHTO LRFD 2007, AASHTO Standard Specifications of Highway Bridges (LFD 2002) and Turkish modification of AASHTO LFD 2002 (cur...
A Quantitative Approach for Rapid Seismic Vulnerability Assessment of Steel Highway Bridges Dicleli, Murat (1997-01-01) While methodologies exist which allow to rapidly identify the seismically deficient bridges and rank them in terms of their respective vulnerability, it remains that the bridge vulnerability aspect of these methodologies is crude and generally limited to simple recognition of undesirable structural features known to have performed inadequately in past earthquakes. Thus, bridges sharing such features would also share the same rating, independently of variations in geometry and other structural properties. As...
Comparison of mean site-specific response spectra in Turkey with the design spectra of AASHTO Mestav Sarıca, Gizem; Askan Gündoğan, Ayşegül; Department of Civil Engineering (2014) Seismic design of bridges is a significant problem for all seismically-active countries including Turkey which has gone through recent destructive earthquakes. Bridges are important elements of transportation and their robustness is important in the aftermath of major earthquakes. Turkish engineers currently employ a modified version of AASHTO (American Association of State Highway and Transportation Officials) LFD Design Specifications for bridge design. Within the scope of a national project (TÜBİTAK 110G...
Reliabilty-based optimization of river bridges using artificial intelligence techniques Turan, Kamil Hakan; Yanmaz, Ali Melih; Department of Civil Engineering (2011) Proper bridge design is based on consideration of structural, hydraulic, and geotechnical conformities at an optimum level. The objective of this study is to develop an optimization-based methodology to select appropriate dimensions for components of a river bridge such that the aforementioned design aspects can be satisfied jointly. The structural and geotechnical design parts uses a statisticallybased technique, artificial neural network (ANN) models. Therefore, relevant data of many bridge projects were ...

Citation Formats

M. Özgenoğlu, “Comparison of ASCE/SEI standard (2010) and modal pushover based ground motion scaling procedures for pre-tensioned concrete bridges,” M.S. - Master of Science, Middle East Technical University, 2015.