Seismic Performance of Tall Pier Bridges Considering Soil-Structure-Interactions

被引：0

作者：

Chen X. ^{[1
]}

Li C. ^{[2
]}

机构：

[1] International Research Institute of Disaster Science, Tohoku University, Sendai

[2] School of Mechanism and Engineering Science, Shanghai University, Shanghai

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2021年 / 49卷 / 06期

关键词：

Nonlinear p-y springs; Seismic performance; Soil-structure-interaction; Tall pier bridges;

D O I：

10.11908/j.issn.0253-374x.21143

中图分类号：

学科分类号：

摘要：

This paper investigated the effects of soil layers on the ground motions and seismic performance of tall pier bridges, using finite element models incorporating nonlinear p-y springs. The results show that when proper motions are selected as inputs, the seismic shear force and bending moment of tall piers could be evaluated by linear-elastic six-spring models with acceptable accuracy under earthquake records with a comparatively low intensity. However, when large input intensities are considered, this type of models will overestimate the shear force demands. Furthermore, the displacement demands of pile cap, which serves as an indicator of concrete piles, are always significantly underestimated by the six-spring models, leading to unconservative design for pile foundations. © 2021 Editorial Department of Journal of Tongji University. All right reserved.

引用

页码：799 / 806

页数：7

共 21 条

[1]

CHEN X, LI J, GUAN Z., Effects of higher modes on tall piers, International Association for Bridge and Structural Engineering, pp. 136-143, (2016)

[2]

CHEN X, LI C., Seismic performance of tall pier bridges retrofitted with lead rubber bearings and rocking foundation, Engineering Structures, 212, (2020)

[3]

CHEN X, LI C., Seismic assessment of earthquake-resilient tall pier bridges using rocking foundation retrofitted with various energy dissipation devices, Structural Control & Health Monitoring, 27, 11, (2020)

[4]

CHEN X, GUAN Z, SPENCER BF, Et al., A simplified procedure for estimating nonlinear seismic demand of tall piers, Engineering Structures, 174, (2018)

[5]

CHEN X, GUAN Z., Extension of a simplified procedure for estimating nonlinear seismic responses of tall pier bridge systems, European Journal of Environmental and Civil Engineering, (2020)

[6]

CHEN X, GUAN Z, Li J, Et al., Shake table tests of tall-pier bridges to evaluate seismic performance, Journal of Bridge Engineering, 23, (2018)

[7]

CHEN X, XIANG N, LI C., Influence of higher-order modes of slender tall pier bridge columns on the seismic performance of pile foundations, Soil Dynamics and Earthquake Engineering, 142, (2021)

[8]

SCOTT BD, PARK R, PRIESTLEY MJ., Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates[J], ACI Structural Journal, 79, 1, (1982)

[9]

GUIRGUIS J, MEHANNY S., Evaluating code criteria for regular seismic behavior of continuous concrete box girder bridges with unequal height piers, Journal of Bridge Engineering, 18, (2012)

[10]

WANG X, SHAFIEEZADEH A, YE A., Optimal intensity measures for probabilistic seismic demand modeling of extended pile-shaft-supported bridges in liquefied and laterally spreading ground, Bulletin of Earthquake Engineering, 16, (2018)

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