动力排水固结加固淤泥地基的关键技术研究  

Key techniques of strengthening silt foundation with dynamic consolidation method

作　　者：张丽娟[1] 韩江[2] 李彰明[1] 

机构地区：[1]广东工业大学土木与交通学院,广东广州510006 [2]中水珠江规划勘测设计有限公司规划处,广东广州510610

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第1期59-62,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：广东省自然科学基金资助项目(06021462)

摘　　要：为了保证广州南沙泰山石化一期淤泥地基处理工程的质量,采用现场试样的方法,对动力排水固结法处理淤泥土地基的关键技术—动力工序和排水系统的设置进行了研究。结果表明,对深厚淤泥地基,水力吹填粉细砂作为强夯垫层时,在设置合理的竖向和水平排水系统的基础上,宜采用低能量"少击多遍,逐层加固"的动力施工工艺,每遍点夯的夯击能量应控制在1000(kN·m)内。加固后的土体物理力学指标均有一定程度的改善,整体加固效果很好。该成果对类似的软土地基处理工程有一定的借鉴和指导意义。In order to ensure the quality of soft soil treatment of Nansha petroleum storage project in Guangzhou, the key techniques and steps, such as dynamic procedure and the establishment of drainage systems, are investigated in this study. The results show that the new construction technology of low-energy, ＂few times and more cycles＂ dynamic compaction combined with pre-compress with soil load and the plastic vertical drain is feasible to deep silt foundation. The compaction energy at a point for each pass should be within 1000kN.m. The physic-mechanical properties after treatment are improved and the foundation is significantly consolidated.

关 键 词：淤泥地基处理:动静力排水固结 排水系统 

分 类 号：TU470[建筑科学—结构工程]