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Loads on Bridges and General Design Methods
Published in Dongzhou Huang, Bo Hu, Concrete Segmental Bridges, 2020
Structural failure can be defined as the realization of the failure of a member of predefined limit states; i.e., its resistance is smaller than its response due to the loads. As with the previous discussion, it may be impossible to design all bridges to resist all possible loads during its service life. The AASHTO LRFD specifications provide the load and resistance factors to ensure that each possible limit states is reached only with an acceptable small possibility of failure.
The effect of ductility on the seismic collapse risk of residential steel moment-resisting frames at Alborz and Zagros Seismic zones, Iran
Published in Sustainable and Resilient Infrastructure, 2022
Ali Jafari, Elham Rajabi, Gholamreza Ghodrati Amiri, Seyed Ali Razavian Amrei
Large damages and economic losses can occur due to a local structural failure. Insensitivity to partial damage or robustness of a building is one of the most effective methods to detain the global collapse. For this reason, quantitative measures of robustness for building against disproportionate collapse are investigated in Jiang et al. (2020) based on the detailed review on about 50 quantitative measures of robustness for structures. This study showed that several factors such as column removal scenarios, types of structures, structural regularity, modes of collapse, numerical methods, multiple hazards, robustness degrees, partial damage of components, and acceptable design criteria should be considered for future design and research on the quantification of robustness (Jiang et al., 2020).
Crack identification in circular arches through natural frequency variations and the firefly hybrid algorithm
Published in Mechanics of Advanced Materials and Structures, 2023
Omar Outassafte, Ahmed Adri, Yassine El Khouddar, Issam El Hantati, Said Rifai, Rhali Benamar
Structural failure due to damage is a major concern in many engineering fields and can have serious consequences in terms of human safety, economic loss, and environmental damage. When a structure is subjected to external loads, such as wind, earthquakes, or heavy traffic, it can develop cracks or other forms of damage that weaken its structural integrity. Over time, these cracks can propagate and cause sudden failure of the structure, which can lead to catastrophic effects.