真空联合堆载预压处理吹填软土指标变化研究  

Study on Changes in Indicators of Hydraulic Fill Soft Soil Treated with Vacuum Combined with Surcharge Preloading

作　　者：柴永进 许波 苟联盟 Chai Yongjin;Xu Bo;Gou Lianmeng(China Design Group,Nanjing.China)

机构地区：[1]华设设计集团股份有限公司,江苏南京

出　　处：《科学技术创新》2023年第21期157-160,共4页Scientific and Technological Innovation

摘　　要：基于徐圩港区广泛分布吹填软土,拟采用真空联合堆载预压处理,作为工程实例,针对加固前后软土采取室内试验分析,并对处理区进行监测,对比分析表层土体沉降量、土层孔隙水压力变化、下部土层分层沉降变化、地基承载力及处理前后土的物理指标。软土区处理完成后,对比分析吹填软土含水量(w)和孔隙比(e)的变化,干密度、湿密度明显增加,吹填软土土体强度持续增加。文章结合实际工程资料的数据分析,可为相关工程的设计和施工提供工程经验。Based on the widespread distribution of hydraulic fill soft soil in Xuwei Port area,it is proposed to use vacuum combined preloading treatment as an engineering example.Indoor test analysis is conducted on the soft soil before and after reinforcement,and the treatment area is monitored to compare and analyze the settlement amount of the surface soil,changes in pore water pressure of the soil layer,changes in layered settlement of the lower soil layer,foundation bearing capacity,and physical indicators of the soil before and after treatment.After the completion of the treatment of the soft soil area,a comparative analysis was conducted on the changes in water content(w)and pore ratio(e)of the hydraulic fill soft soil.The dry and wet densities increased,and the soil properties of the hydraulic fill soft soil improved with the treatment time,while the soil strength continued to increase.The article combines data analysis of actual engineering data to provide engineering experience for the design and construction of related projects.

关 键 词：真空联合堆载预压 吹填区软土 地基土处理 

分 类 号：U655[交通运输工程—港口、海岸及近海工程]