Analytical modeling of rocking elements

Roh, Hwasung; Reinhorn, A. M.

doi:10.1016/j.engstruct.2009.01.014

Cited by 55 publications

(30 citation statements)

References 13 publications

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“…1(d), the segmental column can be considered as a single long rocking column similar to doublehinged gravity columns. The rocking column model was developed by Roh [10] and Roh and Reinhorn [22][23][24] and implemented in IDARC2D [25]. Fig.…”

Section: Pt Column Segmentsmentioning

confidence: 99%

Hysteretic behavior of precast segmental bridge piers with superelastic shape memory alloy bars

Roh

Reinhorn

2010

Engineering Structures

Self Cite

110

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Section: Pt Column Segmentsmentioning

confidence: 99%

Hysteretic behavior of precast segmental bridge piers with superelastic shape memory alloy bars

Roh

Reinhorn

2010

Engineering Structures

Self Cite

110

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“…[25]); concrete and reinforcement fibers at the ends of the beams were modeled with no tensile capacity. Concrete06 material and Steel02 material were combined with Elastic-No Tension material (ENT material, Figure 15) separately using Series material, to represent the constitutive relations of concrete and reinforcement at the ends of the beams and columns, respectively.…”

Section: Beam-column Connectionmentioning

confidence: 99%

Shaking table test and numerical simulation of a 1/2‐scale self‐centering reinforced concrete frame

Cui

Liu

et al. 2015

Earthq Engng Struct Dyn

105

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SUMMARYSelf-centering reinforced concrete frames are developed as an alternative of traditional seismic forceresisting systems with better seismic performance and re-centering capability. This paper presents an experimental and computational study on the seismic performance of self-centering reinforced concrete frames. A 1/2-scale model of a two-story self-centering reinforced concrete frame model was designed and tested on the shaking table in State Key Laboratory of Disaster Reduction in Civil Engineering at Tongji University to evaluate the seismic behavior of the structure. A structural analysis model, including detailed modeling of beam-column joints, column-base joints, and prestressed tendons, was constructed in the nonlinear dynamic modeling software OpenSEES. Agreements between test results and numerical solutions indicate that the designed reinforced concrete frame has satisfactory seismic performance and self-centering capacity subjected to earthquakes; the self-centering structures can undergo large rocking with minor residual displacement after the earthquake excitations; the proposed analysis procedure can be applied in simulating the seismic performance of self-centering reinforced concrete frames. To achieve a more comprehensive evaluation on the performance of self-centering structures, research on energy dissipation devices in the system is expected.

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“…However, few computational models exist for modeling the response of deformable rocking bodies (e.g. [9], [10], [11], [12], [13], [14], [15], [16], [17]). Most of these studies, though, consider the rocking base to be rigid, take into account the stress nonlinearity only across the rocking interface or make simplifications regarding the stress distribution near the contact area.…”

Section: Introductionmentioning

confidence: 99%

A New Computational Approach for the Rocking Response of Deformable Bodies Considering Material Nonlinearity

Avgenakis¹,

Psycharis²

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. An increasing interest in the use of rocking members in earthquake resistant structural systems has been observed in recent years. The benefits of such members include the limitation of the damage, re-centering capabilities and reduction of seismic forces transmitted to the rest of the structure due to a yield-like response.Despite the importance of such members, few models able to describe the response of flexible rocking members in structural systems realistically can be found in literature, since most of the research focuses on the response of rigid bodies or ignores the stress nonlinearity near the contact area, which is considered crucial to the accurate determination of the rocking response of deformable rocking bodies. A new macro-element formulation for elastic rocking members has been proposed by the authors in previous papers which is able to take into account this stress nonlinearity, producing results which are very close to the ones produced by conventional finite element programs.Rocking members in structural systems are expected to behave inelastically for large seismic excitations. In this paper, the macroelement presented previously by the authors, which considered the element material to be elastic, is extended to also take material nonlinearity into account. The effect of the nonlinear stress distribution across the rocking interface on the member displacements is determined and approximate formulas for their determination are included in the macro-element formulation. The results produced by the macro-element with the inelastic material are finally compared to the ones of conventional finite element codes, showing very good agreement between the results of the two methods.

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Analytical modeling of rocking elements

Cited by 55 publications

References 13 publications

Hysteretic behavior of precast segmental bridge piers with superelastic shape memory alloy bars

Hysteretic behavior of precast segmental bridge piers with superelastic shape memory alloy bars

Shaking table test and numerical simulation of a 1/2‐scale self‐centering reinforced concrete frame

A New Computational Approach for the Rocking Response of Deformable Bodies Considering Material Nonlinearity

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