Performance analysis tool for reinforced concrete members

Esmaeily, Asad; Peterman, Robert J.

doi:10.12989/cac.2007.4.5.331

Cited by 10 publications

(10 citation statements)

References 2 publications

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“…For this reason, accurate surveys, construction drawings and/or simulated design are generally needed. The nonlinear force-displacement law for single-column piers can be obtained based on Moment-Curvature relationships, calculated by a software such as KSU_RC [12], Cumbia [13], [14] or with analytical surrogate metamodels requiring few input data [15], [16]. In this calculation, the degree of fixity at the column top (and the torsional stiffness of the deck) should be considered, since this influences the stiffness and the displacement capacity of the pier.…”

Section: Description Of the Proposed Displacement-based Proceduresmentioning

confidence: 99%

Validation of an Analytical Displacement-Based Pushover for Multi-Span Continuous Deck Bridges

Nettis¹,

Gentile²,

Uva³

et al. 2019

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

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In the framework of seismic vulnerability assessment, the displacement-based analytical approaches allow the investigation of the non-linear response of structures with accuracy and low computational effort. This paper deals with a recently-proposed displacement-based analytical pushover addressed to the seismic performance assessment of multi-span continuousdeck straight bridges. The method consists in the static analysis of a simplified mechanical model for increased displacements (pseudo pushover) and allows to obtain an "adaptive" force-displacement curve. This procedure is applied to a set of 36 short bridge configurations representing typical Italian typologies (2 to 6 bays, with two deck configurations and different height of the piers). This work aims to test the method for different hazard intensities, also discussing the influence of bridge regularity in the predicted seismic performance. The accuracy of the DBA procedure is evaluated comparing it with more refined pushover and nonlinear time history analyses. Three different suites of 10 natural ground motions, scaled to different intensity levels, are adopted. The results are discussed in terms of capacity/demand checks and predicted deformed shape, proving that the DB pseudo pushover provides approximately the same level of accuracy expected for standard non-linear static analyses.

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Section: Description Of the Proposed Displacement-based Proceduresmentioning

confidence: 99%

Validation of an Analytical Displacement-Based Pushover for Multi-Span Continuous Deck Bridges

Nettis¹,

Gentile²,

Uva³

et al. 2019

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

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“…Functionalities of this computer application have been explained in detail in Ref. [19]. The analytical procedure and related program reported here, expands the capabilities of aforesaid program to include independent variation of bi-axial force or displacement under any pattern of axial load.…”

Section: Fiber-based Modelmentioning

confidence: 99%

Performance of reinforced concrete columns under bi-axial lateral force/displacement and axial load

Shirmohammadi

Esmaeily

2015

Engineering Structures

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“…Moment and curvature of each of these points are predicted through a 5th grade polynomial. It was created a database of Moment-Curvature analysis conducted with the software KSU RC [6]. The results are processed in MATLAB in order to define the characteristic points of each (M − ϕ) curve.…”

Section: Summary Of the Proceduresmentioning

confidence: 99%

“…For each combination of the parameters mentioned in par.4 (hence 11x6x7=462) it's been conducted a Moment-Curvature analysis using the software KSU RC whose reliability has been proved [6]. The cross section is divided into fibers and a stress-strain relationship is assigned to each of them.…”

Section: Execution Of the Analysismentioning

confidence: 99%

Simplified Closed-Form Solution for the Determination of the Moment-Curvature Response of a Circular Rc Section

Raffaele¹,

Gentile²,

Mezzina³

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract.A seismic vulnerability analysis of a multi-span simply supported bridge is often based on the seismic response of the most critical pier. This response is influenced by different collapse modes (flexural, shear, second order effects, lap-splice of longitudinal bars or their buckling). Among these the flexural behaviour is important and it's known if the equivalent plastic hinge length and the Moment-Curvature law of the fixed end are given. This paper provides a closed-form dimensionless solution to obtain a 5 point Moment-Curvature diagram for circular RC section. The solution is based only on three parameters: dimensionless axial force, mechanical percentage of longitudinal reinforcement, geometrical percentage of transversal reinforcement. A numerical example is presented to test the solution comparing it with a FEM analysis.

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Performance analysis tool for reinforced concrete members

Cited by 10 publications

References 2 publications

Validation of an Analytical Displacement-Based Pushover for Multi-Span Continuous Deck Bridges

Validation of an Analytical Displacement-Based Pushover for Multi-Span Continuous Deck Bridges

Performance of reinforced concrete columns under bi-axial lateral force/displacement and axial load

Simplified Closed-Form Solution for the Determination of the Moment-Curvature Response of a Circular Rc Section

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