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Zahra Tajmir Riahi,Khalil Sarkarinejad,Ali Faghih,Bahman Soleimany,Gholam Reza Payrovian 한국지질과학협의회 2023 Geosciences Journal Vol.27 No.3
The major faults in the Rag-e-Sefid oil/gas field and surrounding areas are detected by integrating digital satellite, aeromagnetic, and seismic data to improve resolution and reduce ambiguity. The main structural lineaments are extracted through the processing of satellite images. The continuity of the lineaments onto the magnetic basement is analyzed by processing the aeromagnetic data, which reveals the distribution of the basement faults, their relationship with each other, and their segmentation or continuation in the magnetic basement. The seismic profiles across the major faults support resolving the predominant geological structures of the region and identifying the sense of movement on the fault surfaces. In addition, fieldwork was performed to verify the detections and characterize the status and mechanism of the identified faults. The results indicate that the main detected faults in the area are classified into seven major categories: the Nourooz-Hendijan-Izeh, NW and SE Rag-e-Sefid, Zagros Frontal, Kharg-Mish, Izeh, and Mountain Front faults. The Rag-e-Sefid and the Nourooz-Hendijan-Izeh Faults have been considered critical structural lineaments in creating the final geometry of the Rag-e-Sefid anticline and have controlled the fracture characteristics in the Asmari reservoir.
Introducing new rigid I-beam to box column connections by using a stiffened channel link
Allah Reza Moradi Garoosi,Mehrzad Tahamouli Roudsari,Morteza Torkaman,Shahab Bonyadirad,Ali Saeedmanesh,Khalil soleimani,Hosein Reza Lotfi,Roya Jowkar,Ali Alipour 국제구조공학회 2021 Steel and Composite Structures, An International J Vol.41 No.4
The aim of this study is to present a new and suitable connection for I-shaped beams and box columns that is both constructionally convenient to implement and reliable in terms of its performance. Six full-scale experimental samples were constructed and subjected to cyclic Quasi-static loading. The first sample included an I-shaped beam which was directly connected to a box column, the second sample incorporated a channel link, and stiffened channel links were used in the remaining four samples. The results show that compared to the direct connection, using the stiffened channel link significantly improves the performance of the connection and increases its ultimate strength and ductility by 58% and 70%, respectively. Also, these connections satisfy the code-specified criteria for special moment resisting frames. They are therefore a suitable detail for rigid I-shaped-beam-to-box-column connections in seismically active regions.