岩土力学2012，Vol.33Issue(4)：1006-1012,7.
管桩挤土效应的现场试验和数值模拟
Field test and numerical simulation of squeezing effect of pipe pile
摘要
Abstract
Based on a logistics processing warehouse of phase II and plant project reinforced by PHC pipe pile, the compaction effect of PHC pipe pile in dredger fill ground is analyzed. The changes of pore pressure around pipe and the displacement distribution characteristics of soil during pile-sinking are studied by piezometers and clinometers embedded in advance and with the aid of field test means. It is found that the excess pore water pressure decreases linearly with the increase of the distance to the pile and the area of effect is about 10 times of pile diameter. The maximum soil horizontal displacement occurs at a depth of 0.2-0.4 times of pile length, which is related to the subsoil properties and the depth of the soil. By simulating the field test results effectively with numerical simulation and then promoting the results, the law of the displacement of soil with depth and the radial distance during pile-sinking is got. The numerical simulation results show that the soil displacement field is greatly influenced by the friction feature of pipe-soil interface and the pile diameter.关键词
PHC管桩/挤土效应/ABAQUS/现场试验/数值模拟Key words
PHC pipe pile/ squeezing effect/ ABAQUS/ field test/ numerical simulation分类
建筑与水利引用本文复制引用
雷华阳,李肖,陆培毅,霍海峰..管桩挤土效应的现场试验和数值模拟[J].岩土力学,2012,33(4):1006-1012,7.基金项目
国家自然科学基金(No.51078262) （No.51078262）
国家重点基础研究发展计划(973计划)(No.2010CB732106) （973计划）
天津大学自主创新基金(No.2010XJ-0101). （No.2010XJ-0101）
