岩土工程学报2011，Vol.33Issue(7)：1135-1141,7.
加筋减载涵洞的涵顶土压力计算
Calculation of vertical earth pressure on load reduction culverts under embankments by reinforcement
摘要
Abstract
Based on the collaborative working mechanism of culvert-filling-foundation,the load reduction mechanism of a culvert with reinforcement is analyzed.Mechanical model of the culvert with reinforcement is established through theoretical analysis,and the expression of earth pressure acting on geogrid is derived theoretically.Considering the support effect of filling under the geogrid,the stress and deformation of goegrid are analyzed to derive deflection calculation formula of geogrid under load of filling,and then the pressure acting on the top of the culvert is calculated by force analysis.The calculated results by the presented method are in good agreement with those by finite element methods and the field test results recorded in literatures,especially when the fill is high.Finally,based on the presented method,parametric analyses are performed to study the main factors which affect the pressure on the culvert such as embankment height,modulus of loose fillings on the culvert and stiffness of geogrid.关键词
高填方涵洞/土压力/土工格栅/减载/解析法/数值模拟Key words
high embankment culvert/earth pressure/geogrid/load reduction/analytical method/numerical simulation分类
建筑与水利引用本文复制引用
郑俊杰,马强,张军..加筋减载涵洞的涵顶土压力计算[J].岩土工程学报,2011,33(7):1135-1141,7.基金项目
国家自然科学基金项目 （）
教育部留学回国人员科研启动基金项目 （）
贵州省交通厅科技攻关项目 （）
