摘要
桥梁支盘桩具有大直径、大桩长等特点,为研究支盘大小对大直径支盘桩单桩轴向承载力的影响以及桩间距对单排桩承载力、沉降变形的影响,针对依托项目建立了MIDAS/GTS有限元数值模型,对不同支盘直径、桩间距等工况进行分析。结果表明:大直径支盘桩支盘直径宜大于2.5倍桩直径,桩间距宜大于2.5倍支盘直径。
The large diameter squeezed branch pile for bridge is characterized by large diameter,long pile,etc. In order to determine the influence of the branch size on the axial bearing capacity of large diameter squeezed branch pile,and the influence of pile spacing on the bearing capacity,settlement and deformation of single-row piles,the MIDAS / GTS finite element numerical model is established for the project based,and different diameters of branch pile and pile spacing and other conditions are analyzed. The results show that the diameter of large diameter squeezed branch pile shall be greater than 2. 5 times pile diameters and the pile spacing shall be greater than 2. 5 times squeezed branch pile diameters.
出处
《路基工程》
2015年第2期13-16,共4页
Subgrade Engineering
基金
国家自然科学基金(51208452)
关键词
大直径支盘桩
承载特性
数值分析
桩间距
沉降变形
Large diameter squeezed branch pile
bearing performance
numerical Analysis
pile spacing
settlement and deformation
