作　　者： (赵凯）;

机构地区： 贵州省交通规划勘察设计研究院股份有限公司,贵阳550081

出　　处： 《西部交通科技》 2017年第11期61-63,98,共4页

摘　　要： 文章针对大跨径连续梁桥,建立空间动力分析有限元模型,采用非线性时程波分析方法,对比桩土相互作用不同模拟方式(群桩六弹簧法、群桩效应的单桩六弹簧法、无群桩效应的单桩六弹簧法、m法)对结构响应的影响规律。结果表明:群桩六弹簧法和群桩效应的单桩六弹簧法几乎等效;无群桩效应的单桩六弹簧法较群桩效应的单桩六弹簧法桩基础刚度较大;四种桩土模拟方式对于工程项目的计算结果均可信。 Regarding the large-span continuous girder bridge, this article established a finite element model of space dynamic analysis,then the nonlinear time-course analysis method was used to com- pare the impact rules of different pile-soil interaction simulation methods （group-pile six-spring method ,single-pipe six-spring method of group pile effect,single-pipe six-spring method without group pile effect, and m method）on the structure response.The results showed that the group-pile six-spring method and the single-pipe six-spring method of group pile effect have almost equivalent effect; com- pared to the single-pipe six-spring method of group pile effect, the pile foundation stiffness in single- pipe six-spring method without group pile effect is larger; the calculation results on engineering pro- jects by these four pile-soil simulation methods are all credible.

关 键 词： 大跨径连续梁桥 桩土相互作用 非线性时程波 六弹簧法 法