Seismic performance of composite moment-resisting frames achieved with sustainable CFST members

Silva, A.; Jiang, Ya Dong; Macedo, Luís; Castro, José Miguel; Monteiro, Ricardo; Silvestre, Nuno

doi:10.1007/s11709-016-0345-y

Cited by 23 publications

(12 citation statements)

References 31 publications

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“…At this stage, the availability of fragility functions for both structural and non-structural elements is necessary. In the literature, few experimental investigations are available for non-structural elements [4][5][6][7]. For this reason, many fragility functions are based on expert judgments.…”

Section: Introductionmentioning

confidence: 99%

Shake Table Testing for Seismic Performance Evaluation of Non-Structural Elements

Perrone¹,

Brunesi²,

Peloso³

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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In the last years an increasing interest has been addressed to the assessment of the expected mean annual losses of single buildings as well as of building portfolio(s). Field observation of damage/failure in the aftermath of past earthquakes demonstrates that the losses related to the non-structural elements could significantly exceed the structural losses. At the same time, it is worth noting that the damage related to the non-structural elements could affect the functionality of the buildings and critical facilities. Based on these considerations, a detailed assessment of the expected annual losses requires data both on the structural and non-structural elements. In comparison to structural elements and systems, however, there is much less information and experimental data to undertake the assessment and design of non-structural elements for multiple-performance levels. Shake table testing could thus be very useful to assess the seismic performance of non-structural elements and to achieve the required information for loss estimation studies. In this paper, the results of shake table testing of acceleration-sensitive non-structural elements are presented. Equivalent single degree of freedom numerical models of the analyzed acceleration-sensitive non-structural element was developed using the results of the tests and a performance evaluation was carried out.

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Section: Introductionmentioning

confidence: 99%

Shake Table Testing for Seismic Performance Evaluation of Non-Structural Elements

Perrone¹,

Brunesi²,

Peloso³

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Generally, the choice bias for the interstory drift [10,11]. Besides, further studies comprised the computation of performance and fragility functions [12][13][14][15][16][17] or robustness [18] for steel MRFs.…”

Section: Introductionmentioning

confidence: 99%

Influence of Beam-to-Column Connections in Seismic Vulnerability Assessment of Steel Structures

Gabbianelli¹,

Perrone²,

Brunesi³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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It is worldwide recognized the importance of assessing the vulnerability of structures in seismic prone zones. Focusing on steel structures, it is well-known that the behavior of beam-tocolumn connections plays a key role in the seismic response of any moment-resisting frame system. Recently, a research project funded by European Commission investigated the seismic performance of pre-qualified connections through numerical analyses and pseudo-static cyclic testing. From a designer perspective, it is, however, necessary to understand the efficiency of such connections in terms of building performance to take a rational and conscious decision when designing a building. With this in mind, this paper investigates the influence of different beam-to-column connections on the seismic response and vulnerability of mediumrise steel frame structures. The behavior of these structures has been investigated by means of non-linear dynamic analysis for increasing seismic intensity levels using the OpenSeesPy finite element software. The record selection has been carried out through the Average Sabased method. The building performance has been assessed computing both maximum and residual interstory drifts, as well as fragility curves and absolute acceleration floor response spectra. The last mentioned enables to evaluate the likely damages experienced by acceleration sensitive non-structural elements, giving an additional point-of-view for estimating the building content performance. The outcomes of this study provide useful information for practitioners and designers interested in adopting the new set of pre-qualified connections, clarifying their effects on performance of common buildings and their content.

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“…The rubberized concrete is made of the normal aggregate partially replaced by recycled tire rubber aggregate. Rubberized concrete can significantly improve the ductility [27] and decrease the engineering cost and natural frequency of a structural member [28,29]. The bending and seismic performances of circular-sectional, square-sectional, and rectangular-sectional CFST columns with rubberized concrete have become an active research topic [30,31].…”

Section: Introductionmentioning

confidence: 99%

Behavior of Rectangular-Sectional Steel Tubular Columns Filled with High-Strength Steel Fiber Reinforced Concrete Under Axial Compression

Liu

Ding

et al. 2019

Materials

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This paper studies the effect of high-strength steel fiber reinforced concrete (SFRC) on the axial compression behavior of rectangular-sectional SFRC-filled steel tube columns. The purpose is to improve the integrated bearing capacity of these composite columns. Nine rectangular-sectional SFRC-filled steel tube columns and one normal concrete-filled steel tube column were designed and tested under axial loading to failure. The compressive strength of concrete, the volume fraction of steel fiber, the type of internal longitudinal stiffener and the spacing of circular holes in perfobond rib were considered as the main parameters. The failure modes, axial load-deformation curves, energy dissipation capacity, axial bearing capacity, and ductility index are presented. The results identified that steel fiber delayed the local buckling of steel tube and increased the ductility and energy dissipation capacity of the columns when the volume fraction of steel fiber was not less than 0.8%. The longitudinal internal stiffening ribs and their type changed the failure modes of the local buckling of steel tube, and perfobond ribs increased the ductility and energy dissipation capacity to some degree. The compressive strength of SFRC failed to change the failure modes, but had a significant impact on the energy dissipation capacity, bearing capacity, and ductility. The predictive formulas for the bearing capacity and ductility index of rectangular-sectional SFRC-filled steel tube columns are proposed to be used in engineering practice.

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Seismic performance of composite moment-resisting frames achieved with sustainable CFST members

Cited by 23 publications

References 31 publications

Shake Table Testing for Seismic Performance Evaluation of Non-Structural Elements

Shake Table Testing for Seismic Performance Evaluation of Non-Structural Elements

Influence of Beam-to-Column Connections in Seismic Vulnerability Assessment of Steel Structures

Behavior of Rectangular-Sectional Steel Tubular Columns Filled with High-Strength Steel Fiber Reinforced Concrete Under Axial Compression

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