A multilevel calculation scheme for risk-based robustness quantification of reinforced concrete frames

Droogné, Didier; Botte, Wouter; Caspeele, Robby

doi:10.1016/j.engstruct.2017.12.052

Cited by 24 publications

(12 citation statements)

References 37 publications

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“…Furthermore, next to the axial loads and bending moments acting on the columns, the membrane forces developed in the beams of the DAP should also be taken into account when assessing the progressive collapse resistance of an RC frame .…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, from the analyses, it is also observed that the columns just next to the removed column are subjected to significant bending moments, which are much larger compared to the undamaged situations for all considered damage scenarios ( Figure 6). Nevertheless, Furthermore, next to the axial loads and bending moments acting on the columns, the membrane forces developed in the beams of the DAP should also be taken into account when assessing the progressive collapse resistance of an RC frame [9,17,19].…”

Section: Observations For Iapmentioning

confidence: 99%

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Assessment of the behavior of vertical ties in RC structures under progressive collapse

2019

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Despite the recent amount of theoretical and technological developments, structural robustness is still an issue of controversy being underlined by several progressive collapses in the past. Current design codes point out different strategies, among which strategies to limit progressive structural damage by applying prescriptive design and detailing rules. For example, for consequence class 2 structures, EN1991‐1‐7 defines a risk class CC2b for which also vertical ties are required. However, the background of the design values of vertical ties in current codes is not clear and their adequacy should be validated. Moreover, effects such as membrane action and Vierendeel action are important to consider when assessing structural robustness and are difficult to incorporate when applying only traditional design methodologies. To this extent, a set of numerical simulations have been executed in this contribution in order to verify and investigate the progressive collapse behavior of RC frames including the redistribution of internal forces and the response of the vertical ties in columns.

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Section: Resultsmentioning

confidence: 99%

Section: Observations For Iapmentioning

confidence: 99%

Assessment of the behavior of vertical ties in RC structures under progressive collapse

2019

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“…A design scheme of the first level (primary design model) models the whole building, including the Foundation, ground base [15]. A design scheme of the second level simulates the typical fragment -substructure [14,20] the frame structure composition, which includes on and off column. The result of the calculation are the load, displacement and area of required reinforcement panels-frames including precastmonolithic design of beams, slabs, strapping girders and foundations.…”

Section: Resultsmentioning

confidence: 99%

Industrial constructive system of civil buildings of increased survivability

2019

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The paper considers a new industrial constructive system of residential and public buildings that meets modern requirements for protection against progressive collapse, improved space-planning, architectural and thermal protection solutions. The presence of a significant number of enterprises with technological lines for the production of structures for large-panel housing construction and their share in the market, combined with a number of shortcomings of the technical and space-planning solutions used, indicate the need to modernize these enterprises for their production to meet modern requirements. The purpose of this study was to develop an industrial constructive system of civilian buildings with increased resistance to progressive collapse, the production of which would not require expensive modernization of the construction industry enterprises. Based on the level calculation schemes, an algorithm is proposed for calculating such a system for a particular emergency impact. Numerical studies have established the correspondence of the developed constructive system to the requirements of a special limiting state under design loads and accidental effects caused by the disconnection of the vertical bearing from work.

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“…Considering a generic stochastic dynamical system (1) where, M is the mass matrix, C is the damping matrix, G(·) is the restoring force, F(·) is time process excitation, and Γ is the input influence matrix. , , and X X X   are the acceleration, the velocity and the displacement vectors, respectively.…”

Section: Probability Density Evolution Methods (Pdem) Based Evaluationmentioning

confidence: 99%

“…It resulted in extensive research related to progressive collapse of structures. The terrorist attacks on World Trade Center in New York in 2001 triggered a renewed interest in structural robustness [1].…”

Section: Introductionmentioning

confidence: 99%

Robustness‐evaluation of a stochastic dynamic system and the instant equivalent extreme‐value event

Ding

Botte

Coile

et al. 2018

Beton und Stahlbetonbau

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Many theoretical methods for evaluating robustness have been developed in the last decades. Especially probability‐based robustness quantification promises to provide a rational basis for decision‐making. To allow for this type of robustness evaluation, the probability of failure (or the corresponding reliability index) of the structural system in the damaged and the undamaged state has to be determined. In this paper, the Probability Density Evolution Method (PDEM) is used to evaluate the dynamic reliability, taking into account the randomness which comes both from the excitation and from the stochastic system properties. The efficiency of the PDEM for robustness quantification is evaluated through a simple cargo crane example case. In addition, the instant equivalent extreme‐value event, which is quite different from the equivalent extreme‐value event for one variable, is applied to obtain the extreme value of reaction forces for each sample at instant time.

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A multilevel calculation scheme for risk-based robustness quantification of reinforced concrete frames

Cited by 24 publications

References 37 publications

Assessment of the behavior of vertical ties in RC structures under progressive collapse

Assessment of the behavior of vertical ties in RC structures under progressive collapse

Industrial constructive system of civil buildings of increased survivability

Robustness‐evaluation of a stochastic dynamic system and the instant equivalent extreme‐value event

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