软土地基砂井排水堆载预压处理方案设计  

Design of preloading treatment with sand drain wells for soft clay foundation

作　　者：李卫鹏[1] LI Wei-peng(Xinjiang Survey and Design Institute for Water Resources and Hydropower, Urumqi 830000, Chin)

机构地区：[1]水利部新疆水利水电勘测设计研究院,乌鲁木齐830000

出　　处：《水科学与工程技术》2018年第1期63-65,共3页Water Sciences and Engineering Technology

摘　　要：结合新疆某拟建平原水库工程,就供水兼退水建筑物坐落的软土地基进行了堆载预压处理方案设计。采用分层总和法等理论方法,对预压荷载下天然地基的最终沉降量、预压处理后砂井范围土层的平均固结度、砂井底部下卧层平均固结度和工后地基沉降量等进行了计算。计算结果表明:堆载预压和砂井排水系统的有效结合,可以显著提高软土地基的排水固结效率,对处理软土地基具有良好的效果,可为今后类似地基处理提供借鉴。In this paper, the design of preloading is carrie d out on a Xinjiang plain reservoir dam which was planned to build in the soft clay foundation. By using the method of layer-wise summation, under preloading treatment after the final settlement of natural foundation, the average degree of consolidation of sand drain range foundation and so on are calculated.The results show that the stack preloading treatment with sand drain wells, can significantly improve the efficiency of the drainage consolidation of soft clay foundation, to deal with soft clay foundation has good effect, can provide reference for similar foundation treatment in the future.

关 键 词：软土地基 砂井 堆载预压 理论计算 最终沉降量 工后沉降量 

分 类 号：TU473.1[建筑科学—结构工程]