不同厚度与加载条件下的软基固结变形特性变化规律分析  

Analysis on characteristics variation of soft ground consolidation deformation in different thickness and loading conditions

作　　者：祝卫东[1,2] 俞炯奇 王文双 陈逸欣[4] 张超杰 

机构地区：[1]中国水利水电科学研究院,北京100048 [2]浙江钱江水利置业投资有限公司,杭州310007 [3]浙江省水利防灾减灾重点实验室,杭州310020 [4]中国农业大学土木工程系,北京100083

出　　处：《工程勘察》2014年第3期11-15,93,共6页Geotechnical Investigation & Surveying

基　　金：浙江省自然科学基金项目资助(LY13E090002);浙江省科技创新团队基金项目资助(2010R50035);浙江省水利厅科技基金项目资助(RC1202)

摘　　要：利用海相沉积软土地基处理原位测试数据,按回归分析法研究了不同软基厚度与不同加载条件下软基的固结变形特性变化规律并进行实证。分析表明:软土层厚度与沉降之间可用线性函数拟合,软土层厚度与单位填土高度沉降之间可用对数曲线加以拟合;地质历史、软土层厚度及填土高度类似的区域,填土高度与沉降之间可用线性函数拟合,填土高度与单位软土厚度沉降之间呈现一定的相关性,且呈带宽延伸。将研究结果运用于类似工程进行实证,该成果具有较好的规律性,可以为滨海地区古海塘等的软基加固工程提供指导和借鉴。Based on the in-situ test data of marine sediment treatment, the consolidation deformation characteristics variation in different thickness and different loading conditions is researched by regression analysis and verified on site. The analysis shows that the soft soil thickness and settlement can be matched by linear function, the thickness of soft soil and unit filling settlement can be fitted by logarithmic curve, the filling height and settlement can be fitted by linear function in the area with similar geological history, thickness and filling height. Filling height and soft soil settlement of unit thickness shows a certain correlation and the bandwidth extension. The results are verified in a similar project and proved regularly. The research could provide guidance and reference for soft ground treatment works.

关 键 词：软土厚度 填土高度 加载条件 沉降 相关性 

分 类 号：TU470[建筑科学—结构工程]