Experimental investigation of progressive collapse resistance of one-way reinforced concrete beam–slab substructures under a middle-column-removal scenario

Ren, Peiqi; Li, Yi; Lu, Xinzheng; Guan, Hong; Zhou, Yucai

doi:10.1016/j.engstruct.2016.03.051

Cited by 186 publications

(79 citation statements)

References 19 publications

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“…Detailed loading processes of Specimens P-RC6 and P-RD1 can be referred to Lin et al 17 The experimental observations of these two specimens are similar to those elicited by other comparable specimens presented in the literature. [14][15][16] After the progressive collapse design, the characteristic bearing capacities of P-RD1 (ie, F b and F 0.20 ) were higher than those of P-RC6. Accordingly, F b increased by 43%, while F 0.20 increased by 31%.…”

Section: Experimental Observationsmentioning

confidence: 99%

“…In doing so, the beam‐column joint and the adjoining frame columns can be protected. Based on a column removal scenario, Li et al revealed that the progressive collapse resistance of an RC frame is largely dependent on the catenary mechanism of the frame beam. Further studies by Yu and Tan, Qian et al, Ren et al, and Lu et al, and indicated that the resistance of an RC beam under the catenary mechanism is dominated by the area of the continuously arranged longitudinal reinforcement. Note that the proposed structural detailing does not change the total area of the continuously arranged longitudinal reinforcement in a beam.…”

Section: Experimental Schemementioning

confidence: 99%

“…Consequently, the strengths of RC frame beams are a major concern for most existing progressive collapse design regulations . Among the existing studies, the alternate path (AP) method is most commonly used for design and evaluation of the structural progressive collapse resistance . In the AP method, the structure is examined under the removal of one or several critical columns that are vulnerable to hazards.…”

Section: Introductionmentioning

confidence: 99%

“…5,10,11 Among the existing studies, the alternate path (AP) method is most commonly used for design and evaluation of the structural progressive collapse resistance. [12][13][14][15][16][17] In the AP method, the structure is examined under the removal of one or several critical columns that are vulnerable to hazards. This method is a threat-independent method, making it universal for the progressive collapse design against different hazards.…”

mentioning

confidence: 99%

“…The method is also recommended by many current design guidelines and/or specifications to study the progressive collapse behavior of various structures. 5,10,11 Hence, the AP method is also adopted herein, and the most widely used middle-column removal scenario [12][13][14][15][16][17] is considered in the proposed experimental tests.…”

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confidence: 99%

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A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

Lin

et al. 2019

Earthq Engng Struct Dyn

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Summary Earthquake‐induced building collapse and progressive collapse due to accidental local failure of vertical components are the two most common failure modes of reinforced concrete (RC) frame structures. Conventional design methods usually focus on the design requirements of a specific hazard but neglect the interactions between different designs. For example, the progressive collapse design of an RC frame often yields increased reinforcement and flexural strength of the beams. As a result, the seismic design principle of “strong‐column‐weak‐beam” may be violated, which may lead to unfavorable failure modes and weaken the seismic performance. To avoid these adverse effects of the progressive collapse design on the seismic resistance of RC frames, a novel structural detailing is proposed in this study. The proposed detailing technique intends to concurrently improve the seismic and progressive collapse performances of an RC frame by changing the layout of the newly added longitudinal reinforcement against progressive collapse without introducing any additional reinforcement. A six‐story RC frame is used as the prototype building for this investigation. Both cyclic and progressive collapse tests are conducted to validate the performance of the proposed structural detailing. Based on the experimental results, detailed finite element (FE) models of the RC frame with different reinforcement layouts are established. The seismic and progressive collapse resistances of different models are compared based on the incremental dynamic analysis (IDA) and nonlinear dynamic alternate path (AP) methods, respectively. The results indicate that the proposed structural detailing can effectively resolve the conflict between the seismic and progressive collapse designs.

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Section: Experimental Observationsmentioning

confidence: 99%

Section: Experimental Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

Lin

et al. 2019

Earthq Engng Struct Dyn

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Performance limit states for progressive collapse analysis of reinforced concrete framed buildings

Parisi

Scalvenzi

Brunesi

2018

Structural Concrete

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The definition of performance limit states for progressive collapse design and assessment of civil structures is an open issue and deserves special attention in view of future building codes and standards. In this study, the main findings of a multilevel sensitivity analysis are presented to characterize the progressive collapse capacity of a selected class of modern European buildings having a reinforced concrete framed structure. After that a group of capacity model properties are assumed as random variables on the basis of earlier studies, the sensitivity of both ultimate load capacity and corresponding maximum and residual drifts to the ultimate steel strain and location of column-removal scenario is assessed. Then, the influence of the capacity model properties on maximum drift demand corresponding to a codecompliant design gravity load is evaluated. Finally, five performance limit states associated with increasing levels of damage are introduced and the corresponding load capacity is quantified under varying capacity model properties. Analysis results indicate a high sensitivity to the ultimate steel strain, column location in plan, beam span and yield steel strength. K E Y W O R D Scolumn-removal scenarios, nonlinear time history analysis, performance limit states, progressive collapse, RC framed buildings

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Robustness improvements for 2D reinforced concrete moment resisting frames: Parametric study by means of NLFE analyses

Miceli,

Castaldo

2023

Structural Concrete

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This study develops a 2D computational parametric analysis of ordinary reinforced concrete (RC) frames, located in seismic zone, with the aim to evaluate some design suggestions with respect to their effectiveness in increasing the structural robustness. Specifically, a five‐storey and four‐span 2D RC moment resisting frame is considered, designed in a highly seismic area according to both Italian and European codes. Subsequently, respecting the seismic design code provisions through a cyclic design procedure, some modifications are suggested regarding the layout of the longitudinal reinforcement bars of the beams to exploit the continuity, Vierendeel behavior and influence of the side face reinforcement bars in the beams. For the different modifications, nonlinear finite element pushdown analyses of the whole frames are performed by imposing a monotonically increasing vertical displacement at the point of the column removal in Atena‐2D and considering the presence of the orthogonal framed systems. Furthermore, two different failure scenarios are examined. The numerical force‐displacement capacity curves corresponding to the different proposed design suggestions are investigated and compared. The results have demonstrated the effectiveness in improving the structural robustness of the proposed solutions, especially, of the side face reinforcement bars with respect to both flexural and catenary behavior. The outcomes have also highlighted the compatibility between design criteria of both robustness and earthquake engineering.

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Experimental investigation of progressive collapse resistance of one-way reinforced concrete beam–slab substructures under a middle-column-removal scenario

Cited by 186 publications

References 19 publications

A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

Performance limit states for progressive collapse analysis of reinforced concrete framed buildings

Robustness improvements for 2D reinforced concrete moment resisting frames: Parametric study by means of NLFE analyses

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