河南城建学院学报2018，Vol.27Issue(3)：42-49,8.DOI:10.14140/j.cnki.hncjxb.2018.03.008
非对称地形条件下高填方盖板涵偏载效应研究
Study on partial load effect of high fill slab culvert under asymmetric topography
摘要
Abstract
By using the finite element analysis software Midas/GTS,the influence of asymmetric gully width and gully slope on the earth pressure of culvert culvert,the difference settlement of culvert top filling soil and the settlement of the base is analyzed.The results show that the slope and soil friction effect,the asymmetric valley terrain will produce partial load effect,namely the vertical earth pressure,culvert settlement and settle-ment are asymmetric distribution,and with the culvert on both sides of the slope and gully slope difference is wide variation law of nonlinear increase degree difference increases,When the width of the gully on both sides of the culvert body is 3 times times and the slope gradient is more than 45 o,the deflection effect tends to stabi-lize gradually.The difference settlement between the two ends of the substrate is more obvious than the vertical soil pressure of the culvert roof,when the width of the gully on both sides is 7.5 times times,the slope is 90o, the settlement of the base is 30.7%and 35.5%respectively.Therefore,due to the asymmetry of terrain con-ditions,the deflection effect of high fill culvert should be paid attention to.关键词
高填方/盖板涵/数值模拟/偏载效应/土压力/沉降差Key words
high fill/slab culvert/numerical simulation/off-load effect/earth pressure/differential settle-ment分类
建筑与水利引用本文复制引用
郝宇萌,董芸秀,李少杰..非对称地形条件下高填方盖板涵偏载效应研究[J].河南城建学院学报,2018,27(3):42-49,8.基金项目
广东省交通运输厅科技计划项目(2013-02-010) （2013-02-010）
