Loading...
Search for:
nonlinear-dynamic-time-history-analysis
0.008 seconds
Pipe damper, Part II: Application to bridges
, Article Journal of Constructional Steel Research ; Volume 66, Issue 8-9 , 2010 , Pages 1096-1106 ; 0143974X (ISSN) ; Bagheri, S ; Sharif University of Technology
2010
Abstract
Theoretical and experimental verification of the pipe damper was investigated in Part I of the two companion papers. In this paper, the application of the pipe damper to structures is examined. In particular, single span slab-girder bridges are considered for analytical investigations. A practical detail for the installation of the pipe damper is introduced. Nonlinear dynamic time history analyses are conducted on bridges equipped with the pipe damper and the results are compared with ordinary bridges. Bridge span, ground motion and the pipe length are varied in the analyses. Results show that the pipe damper is a reliable and economical metallic-yielding device that can easily be installed...
Evaluating the damage in steel MRF under near field earthquakes from a performance based design viewpoint
, Article Procedia Engineering ; Volume 14 , 2011 , Pages 3111-3118 ; 18777058 (ISSN) ; Imani, R ; Sharif University of Technology
2011
Abstract
This study is about the performance assessment of steel moment resisting frame structures under nearfield strong ground motions. A number of 3 and 9-story, 3-D structural models being designed using the strength method, are considered. A set of 7 near-field earthquake records, scaled according to ASCE- 7(05), are considered for nonlinear dynamic time history analyses using OpenSees program. Park and Ang damage index is considered for quantitative measurement of the performance of structural models. Maximum values of inter-story drifts along with the local and global damage indices are determined to be used in the performance assessment process. Considering the average results of different...
Numerical study of an innovative SMA based beam-column connection in reducing the seismic response of steel MRF structures
, Article Scientia Iranica ; Volume 23, Issue 5 , 2016 , Pages 2033-2043 ; 10263098 (ISSN) ; Yadegari Farzaneh, A ; Sharif University of Technology
Sharif University of Technology
2016
Abstract
During recent years, Shape Memory Alloys (SMAs) have been effectively used to control the seismic response of structural systems. Recovering the residual strains upon unloading (super-elasticity) or by heating (shape memory effect) is the main characteristic of SMA materials. This paper explores the efficiency of a proposed application of steel & SMA bolts in improving the seismic behavior of connections in steel Moment Resisting Frame (MRF) structures. A new semi-rigid, end-plate, beam-column connection is introduced, which is based on parallel application of steel and austenite-phase SMA bolts. A number of 3-D steel MRF structural models with different numbers of stories and mass...