欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以PHC管桩加固某物流加工二期标准仓库、厂房项目为依托，进行了吹填土地区PHC管桩的挤土效应研究。利用预先埋设的孔压计和测斜计，借助沉桩过程的现场测试手段，研究了PHC管桩在沉桩过程中桩周孔压变化和土体位移分布特征，发现沉桩过程中超孔隙水压力随距桩心距离的增加而近似呈线性规律衰减，影响范围约为10倍桩径，土体水平位移不仅与地基土性质有关，而且其分布特征也与深度有很大关系，表现为0．2-0．4倍桩长处土体水平位移较大。采用数值模拟有效地模拟了现场测试结果，进而将结果推广，得到了沉桩引起的桩周土体位移随深度和距桩心距离的变化规律。数值模拟结果表明：桩一土界面摩擦特性和桩径对土体位移场的影响较大。
英文摘要：
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 pilesinking 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 pilesinking is got. The numerical simulation results show that the soil displacement field is greatly influenced by the friction feature of pipesoil interface and the pile diameter.
同期刊论文项目
同项目期刊论文
期刊信息
位置：