摘要
以苏通大桥为例,通过分析比较工程上常用的6弹簧模型、等效嵌固模型和集中质量模型以及弹性嵌固模型得出各模型的优缺点,并发现弹性嵌固模型能较好地模拟桩土相互作用下桩基的地震动反应。
In the seismic analysis of pile foundation, the soil-pile-structure interaction has been always a complicated issue. Taking Sutong bridge as an example, the common seismic models like 6-spring model, equivalent fixed model, lumped-mass model and elastic fixed model have been analyzed and compared in this paper. And it has been concluded that elastic fixed model can better simulate seismic responses of the pile foundation under the soil-pile-structure interaction.
出处
《结构工程师》
2007年第1期51-55,90,共6页
Structural Engineers
关键词
桩基
大跨度桥梁
桩土相互作用
弹性嵌固模型
阻抗矩阵
pile foundation, long-span bridge, soil-pile-structure interaction, elastic fixed model, impedance matrix
