某场地吹填土层处理与原状土层固结度分析  

Treatment of Blowing Soil Layer and Consolidation Analysis of Original Soil Layer in a Site

作　　者：吴连祥 贾华 龚海斌 周宏博 WU Lianxiang;JIA Hua;GONG Haibin;ZHOU Hongbo(Qidong Architectural Design Institute Co.,Ltd,Qidong Jiangsu 226200 China)

机构地区：[1]启东市建筑设计院有限公司,江苏启东226200

出　　处：《江苏建筑》2024年第5期100-104,共5页Jiangsu Construction

摘　　要：吹填土具有高压缩性、低渗透性、欠固结等特点。吹填土场地开发利用前,通常需要对吹填土进行地基处理,以提高吹填土层的承载力,消除固结沉降。吹填土荷载作用于原状土层顶面相当于施加预压荷载,使原状土层发生固结沉降,其固结度的大小与桩基负摩阻力的影响及工程造价密切相关,打桩前地基的固结度越大,负摩阻力对桩产生的不利影响越小,桩基造价越低。结合实际吹填土场地,介绍对吹填土层的处理方案、处理效果以及原状土层在填土荷载作用下的固结度分析,为合理利用吹填土场地提供依据。Blowing soil has the characteristics of high compressibility,low permeability,and underconsolidation.Before the development and utilization of the soil blowing site,foundation treatment is usually required to improve the bearing capacity of the soil blowing layer and eliminate consolidation settlement.The load of backfill soil on the top surface of the original soil layer is equivalent to the pre-pressure load,which causes the original soil layer to settle.The consolidation degree is closely related to the impact of the negative friction resistance of the pile foundation and the engineering cost.The greater the consolidation degree of the foundation before pile driving,the smaller the adverse impact of the negative friction resistance on the pile,and the lower the cost of the pile foundation.Based on the actual soil filling site,the treatment scheme,treatment effect,and the original soil filling layer are introduced.The analysis of consolidation degree under soil load provides a basis for the rational utilization of soil reclamation site.

关 键 词：吹填土层 处理 原状土层 固结度 

分 类 号：TU411.5[建筑科学—岩土工程]