Rayleigh波作用下桩-土-桥梁结构动力相互作用问题研究

谷 音;于志敏

振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 98-102,.

PDF(2577 KB)
PDF(2577 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 98-102,.
论文

Rayleigh波作用下桩-土-桥梁结构动力相互作用问题研究

  • 谷 音; 于志敏
作者信息 +

Research on pile-soil-bridge structure dynamic interaction under rayleigh wave excitation

  • Gu Yin;Yu Zhi-min

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摘要

基于等效粘弹性人工边界单元建立了可考虑成层介质及Rayleigh波输入的二维有限元时域模型,计算了Rayleigh波作用下成层介质与均匀介质的自由场反应,与理论解比较表明有限元计算结果具有较好的工程精度。针对Rayleigh波作用下桩-土-典型刚构桥梁结构动力反应进行了分析,考虑了场地条件的不同、软夹层位置的改变、不同频率Rayleigh波的输入以及桩长对Rayleigh波传播与场地地震反应的影响,对影响因素进行了讨论。

Abstract

The problem of semi-infinite space with layered medium in the finite element model and corresponding Rayleigh wave input was solved by using equivalent viscous-spring artificial boundary elements. Based on the secondary development of the interface program, an example of two-dimensional finite element model of even and layered medium had been developed. The results indicated that finite element method had excellent estimation precision compared with theory. The dynamic response of pile-soil-bridge structure dynamic interaction under Rayleigh waves was analyzed. A typical rigid frame bridge had been included in this case study. The influence of different site conditions, changes in the location of the soft interlayer, different Rayleigh wave input and pile length on Rayleigh wave propagation and seismic response are considered. The influencing factors of the rigid frame bridge structure are also discussed.

关键词

Rayleigh波 / 桩-土-桥梁结构动力相互作用 / 人工边界单元 / 成层介质 / 参数分析

Key words

rayleigh wave / pile-soil-bridge structure dynamic interaction / artificial boundary / layered medium / parameter analysis

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导出引用
谷 音;于志敏 . Rayleigh波作用下桩-土-桥梁结构动力相互作用问题研究[J]. 振动与冲击, 2011, 30(12): 98-102,
Gu Yin;Yu Zhi-min. Research on pile-soil-bridge structure dynamic interaction under rayleigh wave excitation[J]. Journal of Vibration and Shock, 2011, 30(12): 98-102,

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