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Progressive Collapse Resistance of GFRP Strengthened RC Substructures under a Column-Removal Scenario

机译：GFRP加固的RC子结构在移柱情况下的渐进抗倒塌性

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摘要

In reinforced concrete (RC) structures, the sudden failure or a column is likely to cause severe progressive collapse due to the relatively weak tie force from the surrounding elements. Therefore, some effective strengthening measures can be used to improve the progressive collapse behavior of the structures. Fiber reinforced polymer (FRP) has been widely used in retrofitting the RC structures because of its advantages such as high strength, light weight, corrosion resistance, etc. Thereby, in this paper the progressive collapse behaviors of the glass-FRP (GFRP) strengthened RC substructures subject to a column-removal scenario were studied. A quasi-static experimental method was adopted to test the progressive collapse behavior of the substructures including control specimen and strengthened specimens. The influences of the strengthening schemes on the behavior of the tested specimens were studied by comparing all the test results. The experimental results demonstrate that the strengthening technology can enhance the progressive collapse resistance of the RC structures.
机译：在钢筋混凝土（RC）结构中，由于来自周围元素的相对较弱的拉力，突然的破坏或立柱很可能会导致严重的逐渐倒塌。因此，可以使用一些有效的加固措施来改善结构的渐进倒塌行为。由于纤维增强聚合物（FRP）具有强度高，重量轻，耐腐蚀等优点，因此已广泛用于钢筋混凝土结构的翻新。研究了受柱拆除影响的RC子结构。采用准静态试验方法来测试包括控制标本和加强标本在内的子结构的渐进倒塌行为。通过比较所有测试结果，研究了加固方案对被测样品行为的影响。实验结果表明，加固技术可以增强钢筋混凝土结构的抗连续倒塌性能。

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