Case study of the seismic response of an extra‐dosed cable‐stayed bridge with cable‐sliding friction aseismic bearing using shake table tests

Yang, Haolin; Pang, Yutao; Tian, Shengze; Dang, Xiaohong; Yuan, Wancheng

doi:10.1002/tal.1398

Cited by 25 publications

(10 citation statements)

References 21 publications

(24 reference statements)

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“…The half-structure model inevitably neglects the contributions of symmetric vibration modes of the deck. As discussed earlier, a limited number of previous researches (Wang et al, 2016; Xu, 2015; Yang et al, 2017) have shown that such simplification is generally adequate for the structural responses (girder-end displacements, tower-base moment, etc.) under longitudinal uniform excitations.…”

Section: Proposed Half-bridge Simplified Methodsmentioning

confidence: 99%

“…FEAs showed that the dynamic responses of the full-bridge and the half-bridge model under uniform excitations are sufficiently close for engineering purposes. Based on the numerical studies of Wang et al (2016), Yang et al (2017) conducted shaking table tests of a cable-stayed bridge with cable-sliding friction aseismic bearing (CSFAB) under uniform seismic excitations. The shaking table tests used a 1:20 scale model of the half structure with a horizontal roller at the axis of symmetry.…”

Section: Introductionmentioning

confidence: 99%

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Longitudinal seismic responses of a cable-stayed bridge based on shaking table tests of a half-bridge scale model

Zhang

Gao

et al. 2018

Advances in Structural Engineering

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This article studies the seismic response of a symmetric long-span cable-stayed bridge under longitudinal uniform excitations by finite element analysis and shaking table tests. The feasibility and method of performing shaking table tests are examined using a simplified half-bridge scale model. By taking advantage of the symmetry, it is possible to construct a scale model with a larger scale ratio than a full-bridge scale model. The main components of the scale model (i.e. tower, piers, girder, and cables) were fabricated using the same or similar materials as in the prototype. The design and construction of the scale model is presented. Longitudinal structural responses obtained from the finite element analysis and shaking table tests are compared. The seismic mitigation effects of viscous dampers are examined through shaking table tests.

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Section: Proposed Half-bridge Simplified Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Longitudinal seismic responses of a cable-stayed bridge based on shaking table tests of a half-bridge scale model

Zhang

Gao

et al. 2018

Advances in Structural Engineering

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“…basin-type rubber bearing and panel-type rubber bearing. In general, the rubber bearing has very large compressive stiffness and load-carrying capacity in vertical direction, and provides frictional restoring force in horizontal directions (Yang et al 2017;Jiang et al 2019;Ding et al 2019). In practical design, the rubber bearing was simplified as a linear spring both in vertical compression and tension.…”

Section: Introductionmentioning

confidence: 99%

Incremental dynamic analysis of the long-span continuous beam bridge considering the fluctuating frictional force of rubber bearing

Liao

Zeng

et al. 2021

ABEN

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In the seismic design of long-span bridges, the classic bi-linear model was used to simulate the frictional restoring force of the rubber bearings. However, in actual earthquake, the rubber bearing suffered fluctuating axial pressure in earthquake, even separated from the beam when vertical component of the earthquake was too strong. Employing the bi-linear model for the bearing may incorrectly estimate the seismic response of the bearings, as well as the whole bridge. This paper developed a nonlinear frictional bearing model, which can consider the variation of the frictional restoring force in the bearings, even the separation with the beam in vertical directions. A typical continuous beam bridge was modeled in ABAQUS, and incremental dynamic analysis was conducted for the quantitative comparison of the seismic responses using different bearing models. The intensity measure was selected as the ratio of the peak ground acceleration (PGA) in the vertical direction to the PGA in the horizontal direction. The analysis results indicated that the different bearing model led to the significant different seismic response for the bearings and piers, even the vertical component was small. The bi-linear bearing model would underestimate the seismic demand of the bearing and piers.

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“…In recent years, shake table tests for bridge structures were gradually carried out, including tests for the crucial bridge members (i.e. piers [42][43][44], bearings [45], foundations [46]) as well as entire bridge structures [47][48][49][50][51][52]. Notwithstanding the progress made, the above tests study straight bridges with only few of them focusing on curved ones.…”

Section: Introductionmentioning

confidence: 99%

Theory and experimental verification of a resultant response-based method for assessing the critical seismic excitation direction of curved bridges

Feng

Deng

Lao

et al. 2020

Engineering Structures

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Previous studies have shown that the seismic incidence angle imposes a non-negligible impact on the seismic performance of curved bridges. The computational efficiency of some current methods for determining the critical angle needs to be improved and their applicability in practical engineering projects remains to be examined. For this reason, a resultant response-based (RRB) method is developed herein for assessing the critical excitation direction of curved bridges. To validate the feasibility of this method in an actual seismic design context, a 1/62.5-scale model of a three-span curved bridge is designed and a multi-angle shaking table test is implemented. Meanwhile, the finiteelement model of the test specimen is set up, and the RRB method as well as the linear responsehistory analysis (LRHA) are comparatively assessed. The results indicate that the RRB method can

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Case study of the seismic response of an extra‐dosed cable‐stayed bridge with cable‐sliding friction aseismic bearing using shake table tests

Abstract: This paper presents an experimental case study of an extra-dosed cable-stayed bridge isolated by cable-sliding friction aseismic bearing (CSFAB) based on 1/20 scaled half structure multiple shake

Cited by 25 publications

References 21 publications

Longitudinal seismic responses of a cable-stayed bridge based on shaking table tests of a half-bridge scale model

Longitudinal seismic responses of a cable-stayed bridge based on shaking table tests of a half-bridge scale model

Incremental dynamic analysis of the long-span continuous beam bridge considering the fluctuating frictional force of rubber bearing

Theory and experimental verification of a resultant response-based method for assessing the critical seismic excitation direction of curved bridges

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