中南大学学报（自然科学版）2011，Vol.42Issue(7)：2071-2077,7.
水平推力作用下抗滑桩间土拱效应影响因素的数值分析
Numerical analysis of influence factors on soil arching effect between anti-sliding piles under horizontal pushing loads
摘要
Abstract
Through 3D numerical analysis of the arching effect between anti-slide piles and soils by FLAC3d software, the process and the mechanism of stress arching effect in the soil were studied. By a series of calculations and comparisons, the influence factors on the soil arching effect were determined. For instance, the space of piles, the mechanical properties of soil (such as internal fractional angle, cohesion, elastic modulus, Poison's ratio and dilation angle of soil) and the interface properties between piles and soils were analyzed in detail. The results show that the soil arch zone will become small and the arch shape will change from arched to parabola with the increase of pile spaces. The internal friction angle, the cohesion and the relative elastic modulus between piles and soil play a positive role in soil arching effects, but the Poisson's ratio plays a negative role. The shear dilation angle has no conspicuous effect on the soil arching. Besides, the soil arch zone will enlarge with the increase of roughness of contact interface between piles and soils.关键词
水平推力/土拱效应/抗滑桩/应力拱/桩土相互作用Key words
horizontal pushing load/soil arching effect/anti-slide pile/stress arch/interaction between pile and soil分类
建筑与水利引用本文复制引用
刘钦,李地元,刘志祥,刘静..水平推力作用下抗滑桩间土拱效应影响因素的数值分析[J].中南大学学报（自然科学版）,2011,42(7):2071-2077,7.基金项目
国家自然科学基金和上海宝钢集团公司联合资助项目(51074177) （51074177）
