Explosive loading of multi storey RC buildings: Dynamic response and progressive collapse

Weerheijm, J.; Mediavilla, J.; Doormaal, J.C.A.M. van

doi:10.12989/sem.2009.32.2.193

Cited by 25 publications

(8 citation statements)

References 8 publications

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“…; Weerheijm et al . ). This will avoid abrupt failure of structures without ample warning (Wu et al .…”

Section: Introductionmentioning

confidence: 97%

Deformability design of high‐performance concrete beams

2011

Structural Design Tall Build

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SUMMARY The use of high‐performance materials (HPMs) such as high‐strength concrete (HSC) and high‐strength steel (HSS) is becoming more popular in the construction of beams and columns of tall buildings. These HPMs not only increase the stiffness and decrease the strength‐to‐weight ratio, but also provide a more sustainable construction method by minimising the construction materials needed. However, HSC and HSS are more brittle than normal‐strength concrete and steel, respectively. Therefore, it will adversely affect the deformability of concrete beams. To evaluate the pros and cons of adopting HPM in beam design, the author will investigate the flexural strength and deformability of concrete beams made of HPMs. The deformability in this study is expressed in normalised rotation capacity and investigated by a parametric study using nonlinear moment–curvature analysis taking into account the degree of reinforcement, confining pressure, concrete and steel yield strength. From the results, it is evident that the deformability of concrete beams increases as the degree of reinforcement decreases or confining pressure increases. However, the effects of concrete and steel yield strength depend on other factors. For practical design purpose, charts and formulas are produced for designing high‐performance concrete beams to meet with specified flexural strength and deformability requirement. Copyright © 2011 John Wiley & Sons, Ltd.

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“…; Weerheijm et al . ). This will avoid abrupt failure of structures without ample warning (Wu et al .…”

Section: Introductionmentioning

confidence: 97%

Deformability design of high‐performance concrete beams

2011

Structural Design Tall Build

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“…They recommended that more variables (such as slab reinforcement ratio and slab thickness/span ratio), need to be further investigated, and that analytical studies to capture the tensile membrane action developed in the slabs for progressive collapse should be conducted. Few other contributions, in which finite element formulations are explicitly used, tackle the dynamic analysis of progressive collapse of RC structures (Shi et al, 2010;Weerheijm et al, 2009;Sasani and Sagiroglu, 2010;Sasani et al, 2011). Yu and Tan (2013) carried out an experimental investigation on the resistance of RC beam to progressive collapse due to a middle column removal.…”

Section: Introductionmentioning

confidence: 99%

Enhanced external progressive collapse mitigation scheme for RC structures

Elkholy

El-Ariss

2016

IJSTRUCTE

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This paper discusses enhancement of an external mitigating scheme to maximise the resistance of reinforced concrete continuous beams to progressive collapse due to interior support failure. The mitigating scheme using external unbounded fibre reinforced plastic straight cables and a relevant numerical model were presented by the authors in a published companion paper to predict the progressive collapse resistance of the mitigated beams. This study extends the previous work to efficiently enhance the resistance of mitigated beams by inspecting different mitigating scheme setups. Straight and deviated cable profiles are considered, different cable deviator locations are examined, and different cable deviations are accounted for to compare the corresponding mitigated beam resistance enhancements. The mitigating scheme setup that provides maximum increase in the beam resistance is considered the enhanced setup that efficiently maximises the increase in the mitigated beam resistance and could economically prevent progressive collapse of beams due to interior column failure.

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“…Fewer contributions tackle the dynamic analysis of progressive collapse of reinforced concrete structures, among which [10, 15-17, 19, 24]. Recent works as [15][16][17] use an explicit finite element code, which is adopted in the simulation of blast-induced progressive collapse analyses, where the blast can be modelled in a sophisticated way (as a pressure wave propagation in the air) or in a more simplified manner (as a pressure-time distribution on the concerned elements). This computational technique is mainly suitable for modelling the high dynamic response of concrete and steel during the loading stage, due to the small time steps required by the explicit schemes.…”

Section: Introductionmentioning

confidence: 99%

“…Such an abrupt member removal results in an impulsive loading scenario. This event-independent approach is widely used in the context of progressive collapse simulation techniques [2-12, 14, 18-22, 26, 27], with the aim of studying the structural resistance to the sudden loss of a primary load-bearing element, in contrast to the event-dependent approaches [15][16][17] where the collapse triggering event is modelled to analyse the structural response to a specific loading scenario. According to [26], the sudden column loss approach constitutes a useful design scenario for the assessment of structural robustness, since it offers an upper bound on the deformations obtained with respect to an event-dependent simulation approach.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the influence of design and material parameters in the progressive collapse analysis of RC structures

Iribarren

Berke

Bouillard

et al. 2011

Engineering Structures

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This contribution deals with the modelling of reinforced concrete (RC) structures in the context of progressive collapse simulations. One-dimensional nonlinear constitutive laws are used to model the material response of concrete and steel. These constitutive equations are introduced in a layered beam approach, in order to derive physically motivated relationships between generalised stresses and strains at the sectional level. This formulation is used in dynamic progressive collapse simulations to study the structural response of a multi-storey planar frame subjected to a sudden column loss (in the impulsive loading range). Thanks to the versatility of the proposed methodology, various analyses are conducted for varying structural design options and material parameters, as well as progressive collapse modelling options. In particular, the effect of the reinforcement ratio on the structural behaviour is investigated. Regarding the material modelling aspects, the influence of distinct behavioural parameters can be evaluated, such as the ultimate strain in steel and concrete or the potential material strain rate effects on the structural response. Finally, the influence of the column removal time in the sudden column loss approach can also be assessed. Significant differences are observed in terms of progressive failure pattterns for the considered parametric variations.

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Explosive loading of multi storey RC buildings: Dynamic response and progressive collapse

Cited by 25 publications

References 8 publications

Deformability design of high‐performance concrete beams

Deformability design of high‐performance concrete beams

Enhanced external progressive collapse mitigation scheme for RC structures

Investigation of the influence of design and material parameters in the progressive collapse analysis of RC structures

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