Use of Plastic Hinge Model in Nonlinear Pushover Analysis of a Pile

Chiou, Jiunn-Shyang; Yang, Ho-Hsiung; Chen, Cheng‐Hsing

doi:10.1061/(asce)gt.1943-5606.0000015

Cited by 29 publications

(18 citation statements)

References 12 publications

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“…By using this method, the plastic-hinge length is assigned based on the spacing between the introduced hinges so that the rotational property of a distributed plastic hinge (the relationship of moment M vs. plastic rotation θ p ) can be directly determined based on the moment-curvature relation of the pile section. As suggested in Reference [12], the method to determine the rotational property of the hinge is illustrated in Fig. 2.…”

Section: Pile Nonlinearitymentioning

confidence: 99%

Investigating Influencing Factors on the Ductility Capacity of a Fixed-Head Reinforced Concrete Pile in Homogeneous Clay

2012

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This study performs parametric analyses on the displacement ductility capacity of a fixed-head reinforced concrete pile in homogeneous clay, considering the spread of plasticity in the pile. The parametric study regards the pile as a limited ductility structure, which conditionally allows the pile to have inelastic response during large loading. The variables considered include the pile section parameters and p-y model parameters. A large number of pushover analyses are conducted to examine the displacement ductility capacity of the pile. The results show that the plastic hinging will occur at the pile head region for a fixed-head pile, and the displacement ductility capacity of the pile is mainly influenced by the overstrength ratio of the pile section. Furthermore, the second plastic region may occur in ground when the axial force is in high tension. Based on the design concept of limited ductility structures, the high tensile force in pile should be avoided in pile design. A quantitative relationship between the displacement ductility capacity and over-strength ratio is suggested for engineering applications.

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Section: Pile Nonlinearitymentioning

confidence: 99%

Investigating Influencing Factors on the Ductility Capacity of a Fixed-Head Reinforced Concrete Pile in Homogeneous Clay

2012

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“…The length of plastic hinges in piles can be estimated also through equation 25, since the concentrated hinge model has been adopted to derive analytical models to determine the ductility of piles in several selected limit states. Besides, a pile varies with the development of soil plasticity around the pile, the distributed hinge model uses plastic hinges within a possible zone of plasticity in the pile [103,104]. The plastic zone of a pile is considered to form at a certain depth below the ground surface:…”

Section: Plastic Hinges In Modelingmentioning

confidence: 99%

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Naji¹,

Firoozi

Firoozi³

2020

Lat. Am. j. solids struct.

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Bridges are one of the most critical parts of transportation networks that may suffer damages against earthquakes. Also, seismic responses of most bridges are significantly influenced by soil-structure interaction effects. Taking out expansion joints in the bridges may cause many difficulties in design and analysis due to the complexity of soil-structure interaction and nonlinear behavior. The secondary loads on an IAB include seismic load, temperature variation, creep, shrinkage, backfill pressure on back wall and abutment, all of which cause superstructure length and stress variations in girder changes. The purpose of this study is to recognize the most effective parameters of analysis IABs. Findings show that the backfill material behind the IABs has a significant effect on the performance of IABs. Using a compressible material behind the abutments would enhance the in-service performance of IABs. Finally, behaviour of abutment may be greatly affected by thermal load and soil pressure. Thermal expansion coefficient significantly influences girder axial force, girder bending moment, and pile head/abutment displacement.

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“…In order to simulate the nonlinear behaviour of the piles, plastic hinge model is used. Since the locations of plastic zones are unclear before the analysis, the distributed plastic hinge model (Chiou et al, 2009) is used in this study. As shown in Figure 2, this model distributes a series of plastic hinges along the potential plastic zones and thus can effectively trace the propagation of plasticity in the pile during loading application.…”

Section: Finite Element Modelling Of the Wharfmentioning

confidence: 99%

Seismic performance assessment of pile-supported wharves retrofitted by carbon fibre–reinforced polymer composite considering ageing effect

Banayan-Kermani

Bargi

Heidary-Torkamani

2016

Advances in Structural Engineering

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This study aims to assess seismic vulnerability of a typical pile-supported wharf considering ageing effects due to chloride-induced corrosion of the reinforced concrete piles. In order to improve the seismic performance of corroded wharves, carbon fibre–reinforced polymers is used as a retrofit technique. Three-dimensional model of the wharf is constructed using SAP2000, and pushover analysis is conducted to deduce the capacity curve of the wharf and establish quantitative criteria for bound of damage states. Then, using eight ground motion records, nonlinear static analysis called capacity spectrum method is used to evaluate the response of initial ( t = 0 years), corroded ( t = 25, 50, 75 years) and carbon fibre–reinforced polymer-retrofitted-corroded ( t = 50, 50, 75 years) pile-supported wharf structures. In order to assess the seismic vulnerability of wharves quantitatively, fragility curves are developed using two different engineering demand parameters, including displacement ductility factor ( µd) and state of plastic hinges. These fragility curves demonstrate the evolving damage potential under different levels of intensities taking into account time-dependent corrosion-induced deterioration. In addition, these curves reveal the effectiveness of carbon fibre–reinforced polymer method on the fragility reduction. Results indicate an increment in seismic vulnerability throughout the lifetime of the structure due to corrosion denoting the considerable impact of deterioration due to ageing effects on structural response. Moreover, using carbon fibre–reinforced polymer jacketing as a retrofit and repair method for corrosion-induced damaged structures can remarkably enhance their seismic performance.

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Use of Plastic Hinge Model in Nonlinear Pushover Analysis of a Pile

Cited by 29 publications

References 12 publications

Investigating Influencing Factors on the Ductility Capacity of a Fixed-Head Reinforced Concrete Pile in Homogeneous Clay

Investigating Influencing Factors on the Ductility Capacity of a Fixed-Head Reinforced Concrete Pile in Homogeneous Clay

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Seismic performance assessment of pile-supported wharves retrofitted by carbon fibre–reinforced polymer composite considering ageing effect

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