摘要
串珠状溶洞地层中,桥梁桩基的受力性状极为复杂,其承载性能直接关系到桥梁上部结构的安全与稳定。以贵州某铁路周家湾大桥桥桩基础工程为例,运用Plaxis2D软件建立了有限元计算模型,重点探讨了单桩连续穿越多层溶洞时的受力与变形性状,并分析了桩周岩土体的位移及应力分布规律。
In the formation of beads-shaped karst cave, the pile foundation of bridge has extremely complex behavior of stress, and its bearing capacity relates to the safety and stability of the bridge＇s upper structure directly. Taking the pile foundation of Zhoujiawan Bridge on a railway in Guizhou as an example, a FEM calculation model was established with Plaxis2D so as to discuss the stress and deformation behavior of single pile going through the multilayer cave, and analyze the displacement and stress distribution rules of the rock and soil mass surrounding the pile.
出处
《路基工程》
2015年第5期112-114,132,共4页
Subgrade Engineering
关键词
桩基础
串珠状溶洞
位移
应力
pile foundation
beads-shaped karst cave
displacement
stress
