湖南大学学报（自然科学版）2016，Vol.43Issue(11)：20-25,6.
考虑斜坡效应的桩柱式桥梁基桩稳定性分析∗
Stability Analysis of Pile-column Bridge Pile Considering Slope Effect
摘要
Abstract
The soil resistance is a nonlinear function varying with depth,and it is related to the effect of location in slopes.The simplified model for a pile-column bridge pile and the total potential energy equa-tion of pile-slope system were presented by considering the slope effect.The analytical solution of the criti-cal load and calculated length were derived based on the energy method.In this respect,verification be-tween the measurement and theoretical solution was conducted by dissimilar conditions in plain and slope. The parametric study shows:the increase of the Young's modulus of the pier column or decrease of its free length enhances the stability of the pile foundation;the appointed elastic modulus of pier column corre-sponds to an optimal column-height,and the best stability is achieved while the ratio is in the range of 0.3 to 0.4.Moreover,a key conclusion from observations is that the bridge pile should be located at the slope with the gradient less than 35°for safety.However,the correlation between m andαis of significance sothat it needs to be further investigated.关键词
桥梁工程/基桩/稳定性/能量法/斜坡效应Key words
bridge engineering/piles foundation/stability/energy method/slope effect分类
建筑与水利引用本文复制引用
尹平保,赵明华,赵衡,贺炜..考虑斜坡效应的桩柱式桥梁基桩稳定性分析∗[J].湖南大学学报（自然科学版）,2016,43(11):20-25,6.基金项目
国家自然科学基金资助项目(51408066,51478051),National Natural Science Foundation of China(51408066,51478051) （51408066,51478051）
湖南省交通科技计划项目(201014) （201014）
长沙理工大学桥梁工程领域开放基金项目(14KA06,14KB07) （14KA06,14KB07）
长沙理工大学土木工程优势特色重点学科创新性项目(16ZDXK02) （16ZDXK02）
