砂井排水堆载预压软基处理的工程实践  

ENGINEERING PRACTICE OF PRE-LOADING SOFT FOUNDATION TREATMENT OF SAND DRAIN

作　　者：刘世梅 陈秀清 

机构地区：[1]甘肃省地矿局第二地勘院,甘肃兰州730000 [2]甘肃有色工程勘察设计研究院,甘肃兰州730020

出　　处：《甘肃地质》2006年第1期85-88,共4页Gansu Geology

摘　　要：对厚度10．5～13．8m、埋深2-17m、高含水量、高压缩性、低强度及欠固结的不能满足公路工程建设工后沉降量要求的软基路段进行了砂井排水堆载预压法地基处理；采用分层综合法等理论方法，通过对地基处理前后地基沉降量的计算和预压处理工程中地层固结度的计算，并与预压过程中分层沉降量观测成果进行对比分析，预压处理后的地基工后沉降量可满足规范要求，达到了预期目的。By the sand drain surcharge preloading method, the soft foundation where the thickness is 10.5- 13.8m and buried depth at 2- 17m was treated. It is not conformed with the standards of sinking of mad construction due to its high water content, high compressive, lower intensity and lower consolidation. Applying the theory of stratification, the correlation between the calculation of foundation sinking before and after treatment, the calculation of consolidation during preloading treating construction with the result of stratification sinking during preloading show that the foundation after treated by preloading is conformed with the standards.

关 键 词：软土地基 砂井排水 堆载预压 沉降量 工后沉降量 

分 类 号：U416.1[交通运输工程—道路与铁道工程]