华中科技大学学报（自然科学版）2017，Vol.45Issue(8)：64-68,80,6.DOI:10.13245/j.hust.170813
桩承式加筋路堤荷载传递效率计算方法研究
Investigation of the calculation method of efficacy for geogrid-reinforced pile-supported embankments
摘要
Abstract
Soil arching effect and tensioned membrane effect,have significant influences on load-transfer behavior and embankment settlement.Laboratory model tests were carried out to investigate the features of soil arching by analyzing the distribution of embankment fill settlement by PIV (particle image velocimetry) technique.It is showed that soil arching in embankments can be described with parabola with the height of 0.8 times of cap beam clear spacing.Then,based on the new soil aching model,the corresponding calculation method of efficacy was proposed.The major load-transfer mechanisms,namely soil arching effect,tensioned membrane effect and ground reaction were all taken into account at the same time when calculate the pile efficacy.Finally,the presented method was verified with laboratory model tests data and numerical simulation results of the publication to investigate its validity.关键词
桩承式加筋路堤/土拱效应/张拉膜效应/路堤荷载传递效率/理论计算Key words
geogrid-reinforced pile-supported embankment/soil arching effect/tensioned membrane effect/pile efficacy/theoretical calculation分类
建筑与水利引用本文复制引用
郑俊杰,付海平,曹文昭,郭逸凡..桩承式加筋路堤荷载传递效率计算方法研究[J].华中科技大学学报（自然科学版）,2017,45(8):64-68,80,6.基金项目
国家重点研究发展计划资助项目(2016YFC0800208) （2016YFC0800208）
中国博士后科学基金资助项目(2017M612459) （2017M612459）
华中科技大学自主创新研究基金资助项目. （）
