铁道科学与工程学报2018，Vol.15Issue(3)：629-636,8.
填方边坡变截面桩板墙桩身内力及变形数值分析
Numerical analysis of internal force and deformation of the variable cross-section pile-plank wall on fill slope
摘要
Abstract
This paper takes the fill slope reinforcement of variable cross-section pile-plank wall in a mountainous area as the engineering background. The horizontal displacement and vertical displacement of the retaining structure are monitored on site. Combined with the engineering practice, a finite element model is established for analysis. The correctness of the model is verified by comparing the measured displacement results and the numerical simulation displacement results. At the same time, according to the numerical simulation results, the internal force and deformation law of variable cross-section pile-plank wall are analyzed. The results show that the moment of pile body increases first and then decreases from the top of pile, and it changes at variable cross-section suddenly. It has the maximum value at 13 m from the top of the pile. The shear force at the pile top increases first, then decreases, and is zero at 13 m. Under 13m, the shear of the pile increases first and then decreases, and the shear force has the maximum at 10 m. The horizontal displacement of the pile increases with the incensement of distance from the bottom of the pile. The horizontal displacement of the pile is a little small at the cross-section, and has the maximum at the top of the pile. Finally, according to the characteristics of its deformation, the deformation control measures such as setting the connecting beam at the top of the pile and the cross-section, setting the transition section at the variable cross-section, controlling the soil compaction degree. These can provide a reference for subsequent engineering design.关键词
填方边坡/变截面/桩板墙/数值分析Key words
fill slope/variable cross-section/pile-plank wall/numerical analysis分类
建筑与水利引用本文复制引用
孙晋超,金亮星,欧阳成泓..填方边坡变截面桩板墙桩身内力及变形数值分析[J].铁道科学与工程学报,2018,15(3):629-636,8.基金项目
国家自然科学基金资助项目(51378514) （51378514）
