Analytical Model for Elastoplastic and Creep-Like Behavior of High-Damping Rubber Bearings

Kato, Hideaki; Mori, Takahiro; Murota, Nobuo; Kikuchi, Masaru

doi:10.1061/(asce)st.1943-541x.0001181

Cited by 16 publications

(12 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this section, organized formulation process of DHI model for bidirectional loading is presented by reviewing relevant literature [8][9][10][11][12]. This model is formulated as a modified version of Simo's model (Equation 1) [13].…”

Section: Formulation Of Dhi Modelmentioning

confidence: 99%

Structural rehabilitation using high damping rubber bearing (HDRB)

Vatanshenas

Mori

Murota

2021

BNZSEE

Self Cite

View full text Add to dashboard Cite

High damping rubber bearings show highly nonlinear stress-strain behaviour. Deformation-history integral (DHI) model which can estimate small strain stiffness degradation and nonlinear plasticity via a relatively simple innovative formulation is implemented in this study to model HDRB as the rehabilitation method for a seismically vulnerable building. Considered structure in this study is a three-dimensional, four-story steel frame residential building with a concentrically braced system. Nonlinear direct integration time history analysis and plastic hinges approach were implemented to evaluate structural behaviour of considered structure. It was observed that structural responses enhanced significantly after rehabilitation. Absolute maximum base shear values decreased 61.8% and 92.2% in the worst and best cases, respectively. Most of structural elements remained elastic after rehabilitation and required performance level was satisfied.

show abstract

Section: Formulation Of Dhi Modelmentioning

confidence: 99%

Structural rehabilitation using high damping rubber bearing (HDRB)

Vatanshenas

Mori

Murota

2021

BNZSEE

Self Cite

View full text Add to dashboard Cite

show abstract

“…A new hysteresis model called “deformation history integral type model (DHI model)” that takes shear strain dependency into account has been proved to be capable of accurately predicting the behavior of HDRBs at a wide range of shear strain by experimental verification. It was firstly proposed by Mori et al in 2010, [ 32 ] then verified and improved, [ 33–36 ] and has been employed as a menu option in SAP2000. This model is based on the finite‐elemental analysis (FEA) constitutive law; therefore, the behavior of HDRBs computed by time history analysis can be traced.…”

Section: Constitutive Models Of Hdrbsmentioning

confidence: 99%

Seismic analysis of a reinforced concrete building isolated by high damping rubber bearings using deformation history integral type model

Zhou

2020

Structural Design Tall Build

View full text Add to dashboard Cite

The base-isolation system is a very effective technology for earthquake resistance. Nevertheless, it is adverse to the horizontal displacement control of isolation layer and less efficient in reducing the seismic response of the superstructure on a soft soil. The high damping rubber bearings can provide large hysteretic damping and show hardening effect at high shear strains. To explore the applicability of high damping rubber bearings (HDRBs) and the effect of their characteristics on the seismic responses of the structures on soft soils, a six-story reinforced concrete (RC) building isolated by HDRBs on a soft soil is modeled in SAP2000. By applying deformation history integral type model (DHI model) which can accurately simulate the characteristics of HDRBs and traditional Bouc-Wen model which ignores the hardening effect and high energy dissipation capacity of HDRBs at large shear strains to the bearings separately, seismic responses considering and neglecting the hardening effect and high energy dissipation capacity of HDRBs at large shear strains are investigated. The comparison of the two models shows that the characteristics of HDRBs can effectively reduce the displacement of the isolation layer under extremely strong earthquakes and are conducive to the safety of superstructure under limited earthquake intensities.

show abstract

“…However, no effort is known either to investigate the applicability of the existing rheology models or to propose a new model for simulating the low temperature behavior of HDRBs. Kato et al [17] very recently proposed analytical Model for elastoplastic and creep-like room temperature behavior of HDRB.…”

Section: Introductionmentioning

confidence: 99%