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作者:

Zhang Zhi (Zhang Zhi.) | Li Xiaojun (Li Xiaojun.) (学者:李小军) | Lan Riqing (Lan Riqing.) | Song Chenning (Song Chenning.)

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摘要:

Focusing on a small radius curved bridge, a serious of shaking table tests and corresponding numerical finite element analyses were conducted for a 1/16 scaled curved bridge model considering SSI (Soil-Structure Interaction) effect. In the testing and simulating, the strong motion records with different frequency characteristics and durations, El Centro record from Ms6.7 Imperial Valley earthquake and Wolong record from Ms8.0 Wenchuan earthquake, were as the input motions. The dynamic property, vibration response, damage rule, and failure mode of the curved bridge were obtained preliminarily. The experimental results showed that the transverse stiffness of this soil-pile-bridge structure system was larger than the longitudinal stiffness; the obvious torsion effect of the model structure was observed in the tests under the input motion in uni-direction, and the larger was the input motion PGA, more obvious was the torsion effect; the seismic responses were more sensitive to input motions with relative low-frequency components; the damage degree of the pier bottom increased from short to high pier, and the rubber bearings at side piers appeared two different failure modes induced by the longitudinal slope. Compared with straight bridges, the curvature radius made curved bridges more prone to causing rotation and displacement. Furthermore, finite element analyses were conducted by using the plastic-damage model for concrete, and equivalent soil springs method for pile-soil interaction, respectively. The simulations were in agreement with the test results satisfactorily, moreover the differences between these results were discussed in detail and the errors were in an acceptable range. These studies would be used to provide insights for the further research and theoretical design of curves bridges.

关键词:

Soil-pile-structure interaction Shaking table test Numerical simulation Small radius curved bridge

作者机构:

  • [ 1 ] [Zhang Zhi]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Li Xiaojun]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Li Xiaojun]China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
  • [ 4 ] [Lan Riqing]China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
  • [ 5 ] [Song Chenning]Shandong Jianzhu Univ, Sch Civil Engn, Jinan 250101, Shandong, Peoples R China

通讯作者信息:

  • 李小军

    [Li Xiaojun]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China

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来源 :

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

ISSN: 0267-7261

年份: 2019

卷: 118

页码: 1-18

4 . 0 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:136

JCR分区:2

被引次数:

WoS核心集被引频次: 15

SCOPUS被引频次: 14

ESI高被引论文在榜: 0 展开所有

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