Study on analytical model and robustness ranking index of RC frames with unequal spans against progressive collapse
The existing analytical models of reinforced concrete (RC) frames against progressive
collapse are only available to structures with equal spans. Therefore, a new modified tri-
linear model is proposed for RC frames with unequal spans, which can consider the flexural
action, compressive arch action, catenary action and tensile membrane action of the
structure under different single column loss. A robustness ranking index is also established
based on the proposed model to quickly identify the dangerous column loss scenarios. The …
collapse are only available to structures with equal spans. Therefore, a new modified tri-
linear model is proposed for RC frames with unequal spans, which can consider the flexural
action, compressive arch action, catenary action and tensile membrane action of the
structure under different single column loss. A robustness ranking index is also established
based on the proposed model to quickly identify the dangerous column loss scenarios. The …
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