鱼山围垦工程地基处理深层加固效果分析  

Analysis of deep reinforcement effect of foundation treatment in Yushan reclamation project

作　　者：夏昊凉 徐俊 XIA Hao-liang;XU Jun(CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China)

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032

出　　处：《水运工程》2021年第5期53-55,150,共4页Port & Waterway Engineering

摘　　要：大面积深厚软土地基处理过程中,如何预测塑料排水板未打穿部分的沉降量是工程设计过程中的一个难题。依托鱼山围垦工程地基处理过程,结合施工开始至交工后一段时间内的沉降观测资料,对典型区域的沉降及沉降历程进行详细分析,将实测沉降数据推算出的最终沉降量与理论计算出的最终沉降量进行对比,并对深层塑料排水板的加固效果进行分析。结果表明,一定深度以下的塑料排水板的排水效率迅速衰减,导致固结速率落后于理论计算的速率;用双曲线法结合实测资料反算最终沉降量时,应对板下区的沉降进行修正。How to predict the partially penetrated settlement of soft soil under plastic drain plate is a difficult problem in the design of large area thick soft soil foundation treatment process.Based on the foundation treatment process of the Yushan reclamation project,we combine with observation data of settlement from the beginning of construction to the end of construction,analyze the settlement and settlement history of typical areas,compare the final settlement calculated by the measured settlement data with that calculated by the theory,and analyze the reinforcement effect of deep plastic drainage plate.The results show that the drainage efficiency of the plastic drain plate below a certain depth rapidly attenuates,resulting in the consolidation rate falling behind the theoretical calculation rate.The settlement under the plate should be corrected when the final settlement is calculated by the hyperbolic method combined with the measured data.

关 键 词：塑料排水板 最终沉降量 深厚软土地基 

分 类 号：U655.54[交通运输工程—港口、海岸及近海工程]