Structural safety in case of extreme actions

Giuliani, Luisa

doi:10.1504/ijlcpe.2012.051282

Cited by 21 publications

(8 citation statements)

References 21 publications

(20 reference statements)

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“…In [21] an overview of literature on the topic of robustness, progressive collapse, and disproportionate collapse is provided. In [22] design strategies are identified for obtaining robustness, using prevention and mitigation measures. The author concludes that one of the widely used methods to assess the structural robustness of a structure, is to consider the removal of a key element, and check the vulnerability of the structure.…”

Section: Steel Buildings and Robustnessmentioning

confidence: 99%

Ultimate Capacity of Diagrid Systems for Tall Buildings in Nominal Configuration and Damaged State

Milana¹,

Olmati²,

Gkoumas

et al. 2015

Period. Polytech. Civil Eng.

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One of the evocative structural design solutions for tall buildings is recently embraced by the diagrid (diagonal grid) IntroductionIt is a common understanding that society requires enhanced structures for the people's needs. Besides safety and functional requirements collectively defined in the so-called Performancebased Design [1], today the attention focuses on the sustainability in the broader and profound sense of the word [2].Sustainability in the urban and built environment is a key issue for the wellbeing of people and society. Sustainable development, defined as the "development that meets the needs of the present without compromising the ability of the future generations to meet their own needs" [3] is nowadays a first concern for public authorities and the private sector. Sustainable design leads to innovation since it demands inventive solutions, and eventually is supported by a cultural shift, evident from national level reviews and surveys [4,5]. Sustainability issues are wide-ranging in the building industry but the main focus is the reduction of energy consumption in construction and use.In construction, steel has developed as a material of choice and offers a wide range of solutions that can make buildings more energy efficient, less costly to operate and more comfortable. Several green solutions, aiming at the minimization of structural steel, have been developed in the last few years. Among those, the diagrid structural system is considered as a promising solution for high-rise steel buildings. Diagrid is a perimeter structural configuration characterized by a narrow grid of diagonal members that are involved both in gravity and in lateral load resistance that has emerged as a new design trend recently for tall-shaped complex structures due to aesthetics and structural performance [6,7].Since diagrid requires less structural steel than a conventional steel frame, it provides for a more sustainable structure.This study focuses on the overall structural performance, the ultimate capacity and the robustness of diagrid tall buildings, using numerical (FE) methods. More precisely, the paper is organized in the following manner. Section 2 provides details on diagrid for high-rise buildings. Section 3 outlines structural robustness approaches for steel buildings. Section 4 introduces the case study steel high-rise building and the performed Finite Element (FE) numerical analyses. Finally, Section 5 provides some

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Section: Steel Buildings and Robustnessmentioning

confidence: 99%

Ultimate Capacity of Diagrid Systems for Tall Buildings in Nominal Configuration and Damaged State

Milana¹,

Olmati²,

Gkoumas

et al. 2015

Period. Polytech. Civil Eng.

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“…In such a way (that is adopting a deterministic approach) the failure probability is not evaluated, principally because there is a lack of knowledge of the hazard probability density function. This is common also for LPHC (Low Probability -High Consequence) events [1].…”

Section: Introductionmentioning

confidence: 93%

Monte Carlo Analysis for the Blast Resistance Design and Assessment of a Reinforced Concrete Wall

Olmati

2014

Proceedings of the 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. This paper presents a probabilistic approach for the design and assessment of structural elements under blast loads. The procedure is based on the broadly adopted fragility analysis method, widely implemented in Performance-Based Design procedures for structures subjected to natural hazards such as earthquake and wind. A discussion on the uncertainties related to blast engineering problems and on their implementation in a Performance-BasedDesign approach is presented, followed by an application aiming at the blast protective performance assessment of panels. The non-linear dynamic analyses are carried out by the equivalent non-linear single degree of freedom (SDOF) method. Consequently, the probability failure is computed using both Monte Carlo simulations and fragility curves.

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“…Stabilitätsfragen oder außergewöhnliche Beanspruchungen, fokussieren, bedarf es für die vorliegende Problematik einer Definition, welche die Baukonstruktion mit – vor allem alterungsbedingten – Schädigungsprozessen verbindet. Für die hier betrachteten Verkehrswasserbauwerke wurde daher eine Definition in Anlehnung an gewählt (Bild ):…”

Section: Robustheit Von Verkehrswasserbauwerkenunclassified

Die Bauwerksrobustheit im Kontext eines risikobasierten Erhaltungsmanagements

Akkermann

Weiler

Bödefeld

et al. 2018

Beton und Stahlbetonbau

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Der Zustand der in die Jahre gekommenen Bauwerke an Bundeswasserstraßen verlangt umfangreiche Maßnahmen, von Instandsetzung bis Neubau. Aufgrund von Ressourcenengpässen und langen Projektlaufzeiten können nicht alle erforderlichen Maßnahmen durchgeführt werden. Deshalb ist eine objektivierte Priorisierung einzelner Bauwerke und Netzabschnitte erforderlich. Bei einem risikobasierten Erhaltungsmanagement erfolgt die Bauwerksbewertung von zwei Seiten: vonseiten der Ausfallwahrscheinlichkeit, bestimmt durch den Zustand des Bauwerks und seine Robustheit, und vonseiten der Versagensfolgen. Zur Beschreibung der Ausfallwahrscheinlichkeit ist eine ausschließlich zustandsbasierte Betrachtung von Bauwerksschäden, die in der Vergangenheit favorisiert wurde, nicht alleine ausschlaggebend. Aus der Verbindung von festgestellten Schäden und genereller bautechnischer Robustheit ergibt sich eine erweiterte Zustandsbewertung, die eine qualitative Aussage zur Ausfallwahrscheinlichkeit ermöglicht. Es wird eine neu entwickelte Vorgehensweise zur standardisierten Robustheitsbewertung in Kombination mit für Verkehrswasserbauwerke typischen Schäden vorgestellt und an praktischen Beispielen demonstriert.

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Structural safety in case of extreme actions

Cited by 21 publications

References 21 publications

Ultimate Capacity of Diagrid Systems for Tall Buildings in Nominal Configuration and Damaged State

Ultimate Capacity of Diagrid Systems for Tall Buildings in Nominal Configuration and Damaged State

Monte Carlo Analysis for the Blast Resistance Design and Assessment of a Reinforced Concrete Wall

Die Bauwerksrobustheit im Kontext eines risikobasierten Erhaltungsmanagements

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