Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames
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Following the emergence and establishment of performance-based design as a widely recognized
and applied practice, numerous significant advances in computational techniques have been
made. Arguably, nonlinear methods of analysis – static or dynamic – provide the most detailed
and accurate insight into behavior of the structure which is designed or assessed. While the
current codes of practice permit their use, provisions are vague in some aspects, leaving many
decisions and assumptions up to the engineer. This paper aims to expand the relatively limited
experience with implementation of different distributed plasticity modeling approaches through
a case study based on experimental data. Some particulars of the behavior of structural elements
made of strain-softening materials, and of their corresponding numerical models, are briefly
introduced. Case study is conducted to provide an overview on the procedures for inelastic
analysis of reinforced concrete frames through a side-...by-side comparison of four alternative
approaches for modeling of RC beams and columns with one-dimensional distributed plasticity
finite elements with fiber-discretized cross sections. The analyzed structure consists of a
reinforced concrete column with a fixed base, which is, under varying axial loads, subjected to
monotonic and cyclic lateral displacements applied at its top. Models comprised of force-based
elements with different arrangements of integration points, as well as of displacement-based
elements, are compared. Advantages, limitations and special considerations which need to be
taken into account for each of the approaches are demonstrated through the example. Influence
of concrete confinement is studied by analyzing another column with a different arrangement of
transverse reinforcement. Global structural response is evaluated by comparison of pushover and
cyclic curves for different models. Influence of modeling approach on objectivity of the local
response and the corrections which need to be made for certain approaches are showcased by
moment-rotation curves of the yielded section at the column base. Considerations and findings
presented in the paper, along with other published case studies, can be used for reference when
preparing a computational model for inelastic analysis of a reinforced concrete structure.
Ključne reči:
Nonlinear analysis / performance-based design / seismic assessment / finite elementsIzvor:
The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro, 2024, 297-304Izdavač:
- University of Montenegro Faculty of Civil Engineering
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200012 (Institut za ispitivanje materijala Srbije - IMS, Beograd) (RS-MESTD-inst-2020-200012)
Institucija/grupa
Institut za ispitivanje materijalaTY - CONF AU - Tomić, Nikola AU - Terzić, Anja AU - Bojović, Dragan PY - 2024 UR - http://rims.institutims.rs/handle/123456789/856 AB - Following the emergence and establishment of performance-based design as a widely recognized and applied practice, numerous significant advances in computational techniques have been made. Arguably, nonlinear methods of analysis – static or dynamic – provide the most detailed and accurate insight into behavior of the structure which is designed or assessed. While the current codes of practice permit their use, provisions are vague in some aspects, leaving many decisions and assumptions up to the engineer. This paper aims to expand the relatively limited experience with implementation of different distributed plasticity modeling approaches through a case study based on experimental data. Some particulars of the behavior of structural elements made of strain-softening materials, and of their corresponding numerical models, are briefly introduced. Case study is conducted to provide an overview on the procedures for inelastic analysis of reinforced concrete frames through a side-by-side comparison of four alternative approaches for modeling of RC beams and columns with one-dimensional distributed plasticity finite elements with fiber-discretized cross sections. The analyzed structure consists of a reinforced concrete column with a fixed base, which is, under varying axial loads, subjected to monotonic and cyclic lateral displacements applied at its top. Models comprised of force-based elements with different arrangements of integration points, as well as of displacement-based elements, are compared. Advantages, limitations and special considerations which need to be taken into account for each of the approaches are demonstrated through the example. Influence of concrete confinement is studied by analyzing another column with a different arrangement of transverse reinforcement. Global structural response is evaluated by comparison of pushover and cyclic curves for different models. Influence of modeling approach on objectivity of the local response and the corrections which need to be made for certain approaches are showcased by moment-rotation curves of the yielded section at the column base. Considerations and findings presented in the paper, along with other published case studies, can be used for reference when preparing a computational model for inelastic analysis of a reinforced concrete structure. PB - University of Montenegro Faculty of Civil Engineering C3 - The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro T1 - Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames EP - 304 SP - 297 UR - https://hdl.handle.net/21.15107/rcub_rims_856 ER -
@conference{ author = "Tomić, Nikola and Terzić, Anja and Bojović, Dragan", year = "2024", abstract = "Following the emergence and establishment of performance-based design as a widely recognized and applied practice, numerous significant advances in computational techniques have been made. Arguably, nonlinear methods of analysis – static or dynamic – provide the most detailed and accurate insight into behavior of the structure which is designed or assessed. While the current codes of practice permit their use, provisions are vague in some aspects, leaving many decisions and assumptions up to the engineer. This paper aims to expand the relatively limited experience with implementation of different distributed plasticity modeling approaches through a case study based on experimental data. Some particulars of the behavior of structural elements made of strain-softening materials, and of their corresponding numerical models, are briefly introduced. Case study is conducted to provide an overview on the procedures for inelastic analysis of reinforced concrete frames through a side-by-side comparison of four alternative approaches for modeling of RC beams and columns with one-dimensional distributed plasticity finite elements with fiber-discretized cross sections. The analyzed structure consists of a reinforced concrete column with a fixed base, which is, under varying axial loads, subjected to monotonic and cyclic lateral displacements applied at its top. Models comprised of force-based elements with different arrangements of integration points, as well as of displacement-based elements, are compared. Advantages, limitations and special considerations which need to be taken into account for each of the approaches are demonstrated through the example. Influence of concrete confinement is studied by analyzing another column with a different arrangement of transverse reinforcement. Global structural response is evaluated by comparison of pushover and cyclic curves for different models. Influence of modeling approach on objectivity of the local response and the corrections which need to be made for certain approaches are showcased by moment-rotation curves of the yielded section at the column base. Considerations and findings presented in the paper, along with other published case studies, can be used for reference when preparing a computational model for inelastic analysis of a reinforced concrete structure.", publisher = "University of Montenegro Faculty of Civil Engineering", journal = "The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro", title = "Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames", pages = "304-297", url = "https://hdl.handle.net/21.15107/rcub_rims_856" }
Tomić, N., Terzić, A.,& Bojović, D.. (2024). Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro University of Montenegro Faculty of Civil Engineering., 297-304. https://hdl.handle.net/21.15107/rcub_rims_856
Tomić N, Terzić A, Bojović D. Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames. in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro. 2024;:297-304. https://hdl.handle.net/21.15107/rcub_rims_856 .
Tomić, Nikola, Terzić, Anja, Bojović, Dragan, "Comparison of distributed plasticity approaches for inelastic analyisis of reinforced concrete frames" in The ninth international conference civil engineering science & practice, GNP 2024 proceedings, Kolašin, Montenegro (2024):297-304, https://hdl.handle.net/21.15107/rcub_rims_856 .