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Response of Steel Moment Resisting Frames Under Pushover Analysis
Steel is one of the most useful materials in construction. So, it is necessary to analyze and design a steel structure to perform well under seismic loads. Here the seismic performance of multi-storey steel frames are analyzed for seismic guidelines from Indian code (IS1893-2016). Few guidelines like Seismic Evaluation and Retrofit of Existing Buildings (ASCE 41–17) and Federal Emergency Management Agency (FEMA356) have also been used. Steel bracing is very useful for increasing the shear capacity and to retrofit the structure. In this study typical G + 7 storey 3D steel frame buildings are analyzed for various types of concentric bracings like chevron, diamond, X and chevron eccentric bracings. Performance of each frame is studied through pushover analysis on SAP 2000. FEMA 356 and uniform lateral load pattern are applied for pushover analysis on those four frames. The results of all models are compared in term of base shear, storey displacement, pushover curve, spectrum curve and performance point of the structure. The hinge results and location has been determined and it is noted that chevron braced frames gives highest stiffness under FEMA 356 lateral load pattern while diamond braced frame gives highest stiffness under uniform load pattern. So, it can be concluded that for different loading pattern the response of structure varies and pushover load pattern should be selected judiciously for analyzing specific frame pattern.
Response of Steel Moment Resisting Frames Under Pushover Analysis
Steel is one of the most useful materials in construction. So, it is necessary to analyze and design a steel structure to perform well under seismic loads. Here the seismic performance of multi-storey steel frames are analyzed for seismic guidelines from Indian code (IS1893-2016). Few guidelines like Seismic Evaluation and Retrofit of Existing Buildings (ASCE 41–17) and Federal Emergency Management Agency (FEMA356) have also been used. Steel bracing is very useful for increasing the shear capacity and to retrofit the structure. In this study typical G + 7 storey 3D steel frame buildings are analyzed for various types of concentric bracings like chevron, diamond, X and chevron eccentric bracings. Performance of each frame is studied through pushover analysis on SAP 2000. FEMA 356 and uniform lateral load pattern are applied for pushover analysis on those four frames. The results of all models are compared in term of base shear, storey displacement, pushover curve, spectrum curve and performance point of the structure. The hinge results and location has been determined and it is noted that chevron braced frames gives highest stiffness under FEMA 356 lateral load pattern while diamond braced frame gives highest stiffness under uniform load pattern. So, it can be concluded that for different loading pattern the response of structure varies and pushover load pattern should be selected judiciously for analyzing specific frame pattern.
Response of Steel Moment Resisting Frames Under Pushover Analysis
Lecture Notes in Civil Engineering
Goel, Manmohan Dass (editor) / Vyavahare, Arvind Y. (editor) / Khatri, Ashish P. (editor) / Itankar, Sakshi (author) / Datta, Debarati (author)
Structural Engineering Convention ; 2023 ; Nagpur, India
2024-10-26
12 pages
Article/Chapter (Book)
Electronic Resource
English
Multi-mode pushover procedure for deformation demand estimates of steel moment-resisting frames
| Online Contents | 2017
Multi-mode pushover procedure for deformation demand estimates of steel moment-resisting frames
| Springer Verlag | 2017