The performance evaluation of ordinary moment resisting frames designed by performance-based plastic design and limit state design

Dalal, Sejal P.; Vasanwala, Sandip A.; Desai, Atul K.

doi:10.1504/ijstructe.2015.070718

Cited by 7 publications

(3 citation statements)

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“…Steel moment resisting frames (MRFs) are commonly adopted in seismic areas. As deeply investigated in literature, the performance of MRFs is strictly related to the types of beam-to-column joints [1][2][3][4][5][6][7][8][9][10][11][12][13]. Indeed, MRFs equipped with partial strength beam-to-column joints can be characterized by excessive deformability and sensitivity to P-Delta effects as shown in [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…The use of reduced beam sections (also commonly known as dog-bone joints) can significantly improve the seismic performance and reduce constructional costs [8,9,12]. In addition, dog-bone joints can be easily implemented to improve the performance of existing MRFs that are often designed without or with poor rules of hierarchy of resistances, as the case of ordinary frames in accordance with North American codes [13] or frames designed in ductility class low (DCL) in accordance with Eurocodes [2,10]. However, current Eurocodes [14,15] provide limited and noneffective rules to design seismic-resistant joints, because the hardening of plastic hinge as well as the increase of moment due to the shear force in the section where plastic hinge forms are not properly accounted for.…”

Section: Introductionmentioning

confidence: 99%

“…Figure13. IDAs results in terms of interstory drift ratio (IDR) of the frame equipped with H and RBS joints, modeled with DP and subjected to AQA (a,f), AQK (b,g), LO (c,h), NO (d,i) and NO2 (e,j) accelerograms.…”

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confidence: 99%

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Numerical Simulations to Predict the Seismic Performance of a 2-Story Steel Moment-Resisting Frame

Tartaglia

D’Aniello

2020

Materials

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The seismic response of steel moment resisting frames (MRFs) is influenced by the behavior of joints. Within the ongoing research project “FUTURE”(Full-scale experimental validation of steel moment frame with EU qualified joints and energy efficient claddings under Near fault seismic scenarios), shake table tests will be carried out on a two-story one bay MRF equipped with different types of prequalified beam-to-column joints. In order to design the experimental campaign, preliminary numerical simulations have been carried out to predict the seismic performance of the experimental mock-up in terms of distribution of damage, transient and residual interstory drifts. In this paper the main modeling assumptions and the results of the seismic analyses are shown and discussed. In particular, the response of joints was systematically investigated by refined finite element (FE) simulations and their behavior was taken into account in the global structural performance by means of both concentrated plastic hinge and distributed plasticity models. Both static and dynamic non-linear analyses show in which terms the type of models for plastic hinges influences the results. The modeling approach plays a key role only at very high seismic intensity where large ductility demand is imposed. In addition, changing the type of joints has less influence on the overall response of the frame.

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