Evaluation System in Road Transportation

doi:10.3969/j.issn.1674-0696.2014.04.01

Abstract

Abstract: The damping effect of the viscous damper used in concrete-filled steel tubular frame piers was researched. Through the nonlinear dynamic time-history analysis, the differences between the frame pier with brace and the frame pier with viscous damper at the brace were calculated and compared. Comparative analysis on the influence of viscous damper on the seismic response of the frame pier was carried out. The results show that: the installation of vicious damper at the brace can significantly reduce the seismic response of frame pier. The impact curves of the speed index and the maximum response value of main seismic internal forces of the pier were obtained, and the damping effect of the vicious damper speed index on the frame pier was discussed.

Key words: bridge engineering, seismic response, frame pier, concrete-filled steel tube, vicious damper

摘要： 研究了黏滞阻尼器用于框架式钢管混凝土高墩时的减震效果。通过非线性时程分析，计算比较了采用普通斜撑的框架式桥墩和斜撑处安装黏滞阻尼器的框架式桥墩地震响应的差异，对比分析了黏滞阻尼器对框架式桥墩地震响应的影响。结果表明：斜撑处安装黏滞阻尼器可以显著减小框架式桥墩的地震响应；计算得到了速度指数与桥墩主要地震内力响应最大值的影响曲线；并讨论黏滞阻尼器速度指数对框架式桥墩减震效果的影响。

关键词: 桥梁工程, 地震响应, 框架式桥墩, 钢管混凝土, 黏滞阻尼器

CLC Number:

U442

Zhu Dongsheng, Li Xi, Chang Shan. Evaluation System in Road Transportation[J]. Journal of Chongqing Jiaotong University(Natural Science), 2014, 33(4): 1-6.

朱东生，李曦，常山. 黏滞阻尼器对框架式钢管混凝土桥墩的减震效果研究[J]. 重庆交通大学学报（自然科学版）, 2014, 33(4): 1-6.

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