The slew of high profile engineering calamities in the past decade has demonstrated disastrous consequence progressive collapse. However, low probability such events actually occurring means it is uneconomical to spend extreme resources design every building against A more feasible proposition would be consider alternative fall-back parameters as secondary load carrying mechanisms that can help reduce severity collapse, should occur. date, very limited studies have been carried out quantify...

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The vulnerability of conventional RC structures to structural failure caused by the loss corner columns has been emphasized over past years. However, lack experimental tests led a gap in knowledge for design building mitigate likelihood progressive collapse losing ground column. Seven one-third scale beam-column substructures were tested investigate their performance. variables selected test specimens included beam transverse reinforcement ratios, type detailing (nonseismic or seismic), and...

Masonry-infilled (MI) panels, which serve as partitions in buildings, are normally considered architectural elements. Their weights progressive collapse analysis, but the resistance of walls is ignored design guidelines. Simple structural analysis predicts that infill walls, commonly equivalent to compressive struts, increase not only lateral load also vertical reinforced concrete (RC) frames. Because extra might reduce risk failure, it necessary quantify effects MI on resisting capacity RC...

The application of extreme loads, such as impact and blast, may lead to progressive collapse the robustness a structure must be considered in this context. Although extensive studies have been carried out recent decades investigate load-resisting mechanism RC frames prevent collapse, effects high-strength concrete (HSC) on resistance capacity remain unclear. Therefore, six tests with different span-to-depth ratios strengths were conducted present study. Among them, three are HSC others...

Experimental and analytical studies carried out on a RC moment-resisting frame after it is subjected to the loss of its ground-story exterior column presented in this paper. Four full-scale interior beam-column subassemblages with varying degrees nonseismic detailing were monotonic loading regime simulate effects redistributed gravity loads subassemblage an ground column. The variables test specimens include beam longitudinal reinforcement ratios spacing transverse within beams, columns,...

Numerous studies have indicated that the practice of ignoring contribution reinforced concrete (RC) slab in resisting progressive collapse is overconservative; however, extent influence a slab, especially terms dynamic responses, been rarely studied. To quantify this effect, two series RC beam–column substructures (named DS and DF paper), with without respectively were subjected to tests involving sudden removal corner support. further elucidate response frames against collapse, experimental...

With the numerous catastrophic incidences of progressive collapse in past, there has been increasing interest from both engineering and academic communities toward evaluating ability reinforced concrete (RC) structures to resist collapse. Of studies conducted past decade, majority focused on scenarios which a single vertical loading bearing member, such as column, is removed. However, accidental events (such terrorist attacks or vehicular impact) often cause severe initial damage with...

For reinforced concrete flat slab structures, column failure due to unexpected extreme loading may significantly increase the moment and shear force at adjacent slab–column connections, which can trigger punching these connections result in progressive collapse of structures. To determine possible load-resisting mechanisms developed structures resisting collapse, three multi-panel substructures are tested this study. A substructure is as a control specimen. The remaining two specimens...

In this study, the variability inherent in performance of RC frame structures to bridge over a column loss was investigated, considering uncertainties existing gravity loads, material properties, and construction geometries. Uncertainty sensitivity analysis were conducted tandem provide influence significance uncertain parameters on frames resist progressive collapse. Quasi-static pushdown used assess residual load-resisting capacity with an initialized damage. A set structural models...

In this paper, four 1/2 scaled precast concrete (PC) beam-column subassemblages with high-performance connection were tested under push-down loading procedure to study the load-resisting mechanism of PC frames subjected different column removal scenarios. The parameters investigated include location and effective prestress in tendons. test results indicated that failure modes unbonded post-tensioned (PTPC) from RC frames: No cracks formed beams wide opening near beam interfaces. For...

In this paper, three precast concrete (PC) frames and one cast-in-situ reinforced-concrete (RC) frame were cast tested to investigate the load-resisting mechanisms of emulative PC with various reinforcing details resist progressive collapse. beams frames, top reinforcement was continuous without curtailment while bottom had different anchorage strength. Test results indicated that, in event middle column removal, similar RC frame, beam action, compressive arch action (CAA), tensile catenary...