静动力排水固结法处理吹填海相泥沙软基试验研究
Treatment of hydraulic fill marine soft soil ground using static and dynamic drainage consolidation method
邓安华 1孙振涛 2张磊1
作者信息
- 1. 中交第二航务工程局有限公司, 湖北 武汉 430040;长大桥梁建设施工技术交通行业重点实验室, 湖北 武汉 430040;交通运输行业交通基础设施智能制造技术研发中心, 湖北 武汉 430040
- 2. 长江武汉航道局, 湖北 武汉 430040
- 折叠
摘要
为加固吹填海相泥沙形成的软土地基,在汕头市东海岸围海造地的吹填区域内,进行堆载预压的静态排水固结法、强夯施工的动力排水固结法等试验,采用"降水+堆载+强夯"的静动力排水固结法加固吹填海相泥沙形成的软土地基.通过现场测试,研究施工过程中各层地基沉降、水位和孔隙水压力、土体位移变化情况,对处理前后的地基进行土工试验和原位测试研究,并验证该方法对海相泥沙的处理效果.研究表明,静动力排水固结法显著提高吹填软土地基的承载特性,可广泛应用于围海造地软基加固工程中.
Abstract
To reinforce the soft soil foundation formed by dredged and filled marine sediment,experiments such as static drainage consolidation methods with surcharge preloading,and dynamic drainage consolidation methods with dynamic compaction construction are conducted in the backfill area of the coastal reclamation in Shantou City.The static-dynamic drainage consolidation method of"dewatering + surcharge loading + dynamic compaction"is used to reinforce soft soil foundation formed by marine silt and sand backfill.Through field tests,the settlement of various foundation layers,water level and pore water pressure,and soil displacement changes during construction are studied.Geotechnical tests and in-situ tests are conducted on the foundation before and after treatment,verifying the treatment effect of this method on marine silt and sand.The research shows that this static-dynamic drainage consolidation method can significantly improve the bearing capacity characteristics of the backfilled soft soil foundation,and can be widely used in soft foundation reinforcement projects for land reclamation from the sea.
关键词
围海造地/静动力排水固结法/吹填海相泥沙/软基加固Key words
land reclamation/static-dynamic drainage consolidation method/marine silt and sand backfill/soft foundation reinforcement引用本文复制引用
出版年
2024
NETL
NSTL
万方数据