塑料排水板深层处理方案沉降规律研究  

Study on Regularity of Settlement in Deep Soils Consolidated with Prefabricated Plastic Drains

作　　者：徐泽中[1,2] 方涤华[1,2] 吴钰[1,2] 周泉荪[1,2] 伍育钧[1,2] 田亚飞[1,2] 

机构地区：[1]河海大学 [2]苏州市高速公路建设指挥部

出　　处：《水利水电科技进展》1998年第2期40-43,共4页Advances in Science and Technology of Water Resources

摘　　要：通过对沪宁高速公路塑料排水板处理路段的现场沉降成果和补充钻探扰动土样的压缩试验对比分析，验证了塑料排水板的施工操作对地基土产生不同程度的扰动，造成总沉降量增加，其扰动程度与排水板间距、插板方式以及土的孔隙比有关，在同样条件下，也会加大路堤的工后沉降量。建议根据插板后扰动土样的压缩参数估算最终沉降量及其固结速度。Based on the comparision between the field settlement observation in a section of Shanghai Nanjing Expressway reinforced with prefabricated plastic drains and the compression tests of disturbed soil samples taken from complementary boreholes,the paper proves that installation operations of prefablicated drains will produce disturdance,different extents,of the foundation soil resulting in the increase of total settlement and residual settlement.The extent of soil disturbance is closely related to the spacing of drains,methods of installation as well as the void ratio of the treated soil.Thus,the ultimate settlement and the rate of consolidation should be calculated with the compression parameters of disturded soil samples taken after the installation of prefabricated drains.

关 键 词：地基处理 沉降 塑料排水板 高速公路 深层处理 

分 类 号：U416.1[交通运输工程—道路与铁道工程] U412.366