岩土工程学报Issue(7)：1264-1270,7.DOI:10.11779/CJGE201507012
基于最小势能原理的加筋垫层与路堤桩土相互作用研究
Interaction of reinforced cushion and pile-soil system in embankments based on principle of minimum potential energy
摘要
Abstract
The bearing mechanism of piled embankments is complex as it involves the interaction of piles, soil columns, sand cushions and reinforced geogrids, and its simplified calculation method for layered soils still lacks researches. A mathematical model is proposed for a generalized pile-soil model with geogrids. Considering the potential energy generated by pile-soil load transfer and geotextile tensile, the potential energy equations for the whole system are derived and discreted. An unconstrained nonlinear mathematical optimization model is established, with the potential energy equation as an objective function. The minimum value of the total potential energy equation is obtained by a descent iterative algorithm, and in this way the deformations of piles, soils and sand cushions in the vertical direction are solved. The mathematical model for piled embankment and the solving method are validated through an example without geogrid. The effect of the geogrid interaction is discussed in another engineering example.关键词
桩承式路堤/加筋垫层/数学规划/荷载传递法/桩土相互作用Key words
piled embankment/reinforced cushion/mathematical programming/load transfer method/pile-soil interaction分类
建筑与水利引用本文复制引用
上官士青,杨敏,陈飞,郭俊东,张俊峰..基于最小势能原理的加筋垫层与路堤桩土相互作用研究[J].岩土工程学报,2015,(7):1264-1270,7.基金项目
国家自然科学基金项目 （）
