摘要
本文介绍了１∶２比例尺的桥梁挖井基础现场模型试验以及采用有限元计算程序对基础－土体进行的空间力学分析。结果表明，在竖向偏心荷载作用下有限元计算结果与试验结果较为一致。本文还提出了“剪压比例系数”的概念，按刚性基础－弹性土体共同作用理论，推导了在竖向、水平荷载作用下桥梁挖井基础的力学计算公式，最后给出了工程设计实例。
The test of the field model of the dug well foundation of bridge on the scale of 1∶2 and a mechanical analysis on the foundation soil with three dimensional finite element program is presented in this paper. The result shows that the computations of finite element is coincident with the test conclusion under the vertical eccentric load. The idea of shear compression ratio is also described. According to the theory of the interaction of stiff foundation and elastic soil, a new mechanical calculating formula of the dug well foundation of bridge under the vertical and horizontal force is proposed. At last examples for the design of engineering projects are provided.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1997年第3期47-54,共8页
Chinese Journal of Geotechnical Engineering
