Study on Modeling Method of Reinforced Concrete Pier Based on OpenSees

Yang, Zihao; Li, Chuanfu; Liu, Lei; Yang, Haiyang; Zhong, Tieyi

doi:10.1088/1742-6596/1838/1/012034

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…To clarify the HMP characteristics of the CRFB-FSP, as well as the pounding response and pounding effect between the MB and AB, nonlinear finite element models (FEMs) of the prototype bridges need to be established. OpenSees has the advantages of efficient and practical algorithms, high modeling and calculation efficiency, and excellent programmability [36,37]. It is widely used in finite element analysis for seismic performance of structures [8][9][10], which is recommended by the Network for Earthquake Engineering Simulation (NEES) and the Pacific Earthquake Engineering Research Center (PEER).…”

Section: Finite Element Model (Fem)mentioning

confidence: 99%

Research on the Pounding Response and Pounding Effect of a Continuous Rigid-Frame Bridge with Fabricated Super-High Piers Connected by Grouting Sleeves

Wang

Huang

et al. 2022

Sustainability

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The dynamic characteristics of a continuous rigid-frame bridge with fabricated super-high piers (CRFB-FSP) connected by grouting sleeves and adjacent continuous beam bridges (AB) are significantly different, and they are prone to pounding under earthquake excitation. At present, the pounding response between the CRFB-FSP and AB is still unclear, and the impact of the pounding on the seismic performance of a CRFB-FSP is still in the exploratory stage. In this study, two 1/20 scaled models of a CRFB-FSP (MB) and a cast-in-place AB were designed and manufactured. Then, according to the research purpose and the output performance of the shaking table, three each of non-long-period (NLP) ground motions and near-fault pulse-type (NFPT) ground motions were selected as the inputs of the excitation shaking table test. The peak ground acceleration (PGA) changes from 0.5 g to 1.5 g. According to the similarity ratio (1/20), the initial gap between the MB and AB was taken as 7 mm (prototype design: 140 mm). Furthermore, the longitudinal pounding response between the CFRB-FSP and AB, as well as its influence on the seismic performance of the CFRB-FSP, was systematically investigated through a shaking table test and finite element analysis (FEA). The results showed that the pounding with the CRFB-FSP easily caused a persistent pounding, which may increase the damage risk of the pier. The peak pounding force under the NFPT ground motion was more significant than under the NLP ground motion, whereas the pounding number under the NFPT ground motion was smaller. The peak pounding force increased with the increase in the initial gap, pounding stiffness, span, and pier height. With and without pounding, the CRFB-FSP reflected higher-order mode participation (HMP) characteristics. After pounding, under the NFPT excitation, the HMP contribution increased significantly compared with that of the without pounding condition, while this effect under the NLP excitation was smaller. The peak displacement of the main beam of the CRFB-FSP increased with the increase in the main beam span, pier height and initial gap. The peak bending moment of the pier bottom increased with the increase in the main beam span and initial gap, however, decreased with the increase in the pier height. Moreover, the peak displacement of the main beam and the peak moment of the pier bottom of the CRFB-FSP both reduced. In contrast, the corresponding seismic response of the AB increased under the same conditions.

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Section: Finite Element Model (Fem)mentioning

confidence: 99%

Research on the Pounding Response and Pounding Effect of a Continuous Rigid-Frame Bridge with Fabricated Super-High Piers Connected by Grouting Sleeves

Wang

Huang

et al. 2022

Sustainability

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“…Among beam-column FE models, force-based and mixed formulations (Ciampi & Carlesimo, 1986;Taylor et al, 2003) have proven superior performances because of the advantages given by the exact interpolation of the internal forces (Spacone et al, 1996;Alemdar & White, 2005). Hence, modeling of slender bridge piers with forcebased beam-column FEs is nowadays a consolidate procedure (Mackie & Scott, 2019) that has been widely adopted in many recent studies, e.g., Su et al, (2020), Yang et al, (2021), Pozo et al, (2022) and Bernardini et al, (2021). However, in addition to pier strength assessment, bridge seismic design and safety check usually request the evaluation of pier ductility capacity, which necessarily entails the correct evaluation of the element ultimate displacement.…”

Section: Introductionmentioning

confidence: 99%

A simple numerical approach for the pushover analysis of slender cantilever bridge piers taking into account geometric nonlinearity

Bernardini

Ruta

et al. 2022

Asian J Civ Eng

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The response of slender bridge piers to horizontal actions may be significantly influenced by geometric nonlinearities. In such conditions, the use of sophisticated models implemented in complex structural analysis software can be economically disadvantageous, especially in the preliminary design phases. This paper proposes a simple numerical procedure to compute the nonlinear pushover response of cantilever bridge piers subject to horizontal loads. The procedure is based on an iterative approach to enforce the element equilibrium under large displacements, efficiently accounting for P-Delta effects induced by vertical loads. Evaluation of the bending moment–curvature response of the pier base cross section is required and used as basic input data. For fast preliminary analyses, sectional response can be manually computed in simplified linearized form, thus completely eliminating the need to use structural analysis software. Indeed, the entire procedure can be implemented in standard programming codes, such as PythonTM or Matlab®, and used to evaluate the pushover response of piers with arbitrary cross section. Comparison with experimental test results and solutions based on Finite Element models shows that proposed procedure can be used to get a fast, yet accurate, estimate of the entire force–displacement curve and, in particular, of the pier ultimate displacement.

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Efficient modeling of steel bar slippage effect in reinforced concrete structures using a newly implemented nonlinear element

Abtahi

2023

Computers & Structures

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Study on Modeling Method of Reinforced Concrete Pier Based on OpenSees

Cited by 3 publications

References 1 publication

Research on the Pounding Response and Pounding Effect of a Continuous Rigid-Frame Bridge with Fabricated Super-High Piers Connected by Grouting Sleeves

Research on the Pounding Response and Pounding Effect of a Continuous Rigid-Frame Bridge with Fabricated Super-High Piers Connected by Grouting Sleeves

A simple numerical approach for the pushover analysis of slender cantilever bridge piers taking into account geometric nonlinearity

Efficient modeling of steel bar slippage effect in reinforced concrete structures using a newly implemented nonlinear element

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