Seismic performance and fragility functions of a 3D steel-concrete composite structure made of high-strength steel

Tondini, Nicola; Zanon, Gabriele; Pucinotti, Raffaele; Filippo, Rocco di; Bursi, Oreste S.

doi:10.1016/j.engstruct.2018.07.026

Cited by 22 publications

(5 citation statements)

References 28 publications

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“…Moreover, its useful life cycle (50 years) has expired. In order to assess the current seismic performance for the RC building under study, a push-over (PO) analysis was thus carried out by taking advantage of the distributed plasticity approach models according to the N2 method [30][31][32][33]. More precisely, the reference numerical models were developed using commercial finite element software [34], considering the combination of seismic components acting simultaneously in the X-and Y-directions.…”

Section: Analysis Of Bare Rc Buildingmentioning

confidence: 99%

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Retrofit of Existing Reinforced Concrete (RC) Buildings: Steel vs. RC Exoskeletons

2022

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The existing building stock is largely made up of reinforced concrete (RC) buildings, constructed between the post-World War II period and 1981, and mostly consists of buildings constructed very quickly to meet the great housing demand of this period, and buildings that do not adhere to anti-seismic and energy regulations. Today, after more than fifty years, these buildings have reached the end of their useful life cycle and their maintenance is not sustainable, presenting a series of structural, energy and architectural problems and criticalities. The myriad of possible retrofit interventions currently available for these RC structures drastically reduces when the main requirement for interventions is to avoid operational interruptions to buildings. In this case, an additive structure, operating exclusively from the outside as an exoskeleton, is typically used for achieving appropriate retrofit. In this paper, two solutions are proposed and addressed for the retrofit of an existing RC building in Italy, one through the application of a steel exoskeleton and the other through the application of an RC exoskeleton system. A set of push-over (PO) analyses is carried out to define the performance point of both the original and combined systems. The comparative results of these solutions are then discussed.

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Section: Analysis Of Bare Rc Buildingmentioning

confidence: 99%

“…Generally, for the retrofit of existing RC buildings, two different intervention strategies aimed at improving structural safety indices can be efficiently developed. These strategies include (i) increasing displacement capacity or (ii) reducing displacement demand [23,31].…”

Section: Retrofit Strategy For the Existing Buildingmentioning

confidence: 99%

Retrofit of Existing Reinforced Concrete (RC) Buildings: Steel vs. RC Exoskeletons

2022

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“…In recent years, the probabilistic Performance-Based Earthquake Engineering (PBEE) methodology has become popular, and an increasing number of seismic fragility functions for a particular structural typology or component, crucial for both risk assessment and/or a probabilistic PBEE application, are being developed for both civil [1] and industrial buildings [2] [3]. On these premises, in this paper Incremental Dynamic Analyses (IDAs) were applied to investigate the influence of equipping steel frames with two different dissipative seismic devices analysed in DISSIPABLE, namely the Dissipative Replaceable Beam Splice (DRBeS) and the Dissipative Replaceable Link Frame (DRLF).…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Curves of Steel Frames Equipped with Easily Repairable Dissipative Devices

et al. 2022

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This paper provides insight into a probabilistic demand analysis of a steel‐concrete structures equipped with novel dissipative components. DISSIPABLE components were studied in the framework of a European Research Fund for Coal and Steel (RFCS) project, funded to test large‐scale structures in which the dissipation is concentrated in specifically designed elements that act like a fuse and can easily be replaced after a seismic event. Incremental Dynamic Analyses (IDAs) were performed to investigate the influence of equipping steel frames with two different dissipative seismic devices, namely the Dissipative Replaceable Beam Splice (DRBeS) and the Dissipative Replaceable Link Frame (DRLF). The benchmark models were calibrated on the results of laboratory full‐scale tests, carried out in the project framework. In addition, the DISSIPABLE frame behaviour was compared with a state‐of‐the‐art moment‐resisting frame, designed according to the capacity design philosophy. Probabilistic demand models were developed, and seismic fragility curves were then derived to compare the behaviour of the analysed structural systems.

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“…With regard to experimental activities conducted in Europe, USA and Japan, tests focused on steel and steel–concrete composite partial‐strength joints subjected to cyclic tests were performed and see, among others. [ 1,11–13 ] Moreover, several joints tested in Japan were properties of construction companies, with the primary goal to validate specific joint details. Thus, limited tests and mainly pre‐qualified data are available and are little amenable to generalization.…”

Section: Introductionmentioning

confidence: 99%

Hybrid simulation of a partial‐strength steel–concrete composite moment‐resisting frame endowed with hysteretic replaceable beam splices

Andreotti

Giuliani

Tondini

et al. 2022

Earthq Engng Struct Dyn

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The seismic risk assessment of industrial facilities mainly relies on historical data and analysis and design of uncoupled secondary components. Accordingly, the dynamic interaction between primary structures and process equipment is overlooked. The SPIF project -Seismic Performance of Multi-Component Systems in Special Risk Industrial Facilities-was carried out to respond to this gap, within the European H2020 SERA framework. Its objective regarded the investigation of the seismic behaviour of an archetype industrial multi-storey steel moment resisting frame (MRF) structure equipped with non-structural components (NSCs) by means of shaking table tests. The goal of the proposed study was to extend the interaction analysis between a primary multi-storey braced frame (BF) steel structure and NSCs in a performance-based earthquake engineering (PBEE) perspective. Along this vein, to excite the vibration periods of the NSCs and thus, enhance possible coupling with the primary structure, a synthetic site-based ground motion model (GMM) was employed. More precisely, the proposed research intended: i) to severely excite the process equipment and supplement the scarcity of real records with a specific frequency content by means of a stochastic GMM; ii) to quantify seismic-induced force and displacement demands of secondary components and their effects on the primary BF structure. The evaluation of the experimental data clearly shows buckling in the bracing system of the BF configuration and a strong interaction between vertical tanks and floor crossbeams of the BF. At the very least, the favourable performance of the archetype BF under strong seismic records is demonstrated.

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Seismic performance and fragility functions of a 3D steel-concrete composite structure made of high-strength steel

Cited by 22 publications

References 28 publications

Retrofit of Existing Reinforced Concrete (RC) Buildings: Steel vs. RC Exoskeletons

Retrofit of Existing Reinforced Concrete (RC) Buildings: Steel vs. RC Exoskeletons

Seismic Fragility Curves of Steel Frames Equipped with Easily Repairable Dissipative Devices

Hybrid simulation of a partial‐strength steel–concrete composite moment‐resisting frame endowed with hysteretic replaceable beam splices

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