岩土工程学报2026，Vol.48Issue(z2)：28-32,5.DOI:10.11779/CJGE2026S20036
基于现场监测与离心试验的填海造地软土地基长期沉降特性研究
Research on long-term settlement characteristics of soft soil foundations in reclamation sites based on field monitoring and centrifugal tests
摘要
Abstract
Based on typical stratigraphic conditions of a land reclamation project,this study combines field monitoring with centrifuge model tests to investigate the long-term settlement characteristics of deep soft foundations after surcharge preloading.Field monitoring,conducted over approximately five years following the completion of preloading,indicates that the combined use of plastic vertical drains and surcharge preloading effectively controls post-construction ground settlement,with the growth rate of total settlement gradually decreasing over time.In areas with shallower soft soil layers,the monitored settlement ranges from approximately 90-350 mm,with the settlement rate reducing to 0.01 mm/d.In contrast,in areas with thicker soft soil layers and underlying weak strata,settlement reaches 260-430 mm,and the settlement rate remains above 0.1 mm/d.Centrifuge tests are employed to simulate the entire process of foundation settlement under surcharge preloading,and the settlement development over 50 years after construction is predicted.Both experimental and monitoring results demonstrate that whether the vertical drains fully penetrate the entire soft soil layer is critical for long-term settlement control.Full penetration significantly enhances settlement control during foundation treatment and effectively suppresses post-construction settlement.Incomplete penetration,however,leads to slow drainage in the lower soft soil layer,resulting in prolonged deformation and significant post-construction settlement.The research findings provide experimental evidence and references for the design and construction of similar land reclamation projects.关键词
堆载预压/软土/现场监测/离心模型试验/长期沉降Key words
surcharge preloading/soft ground/field monitoring/centrifugal model test/long-term settlement分类
建筑与水利引用本文复制引用
李波,张洋洋,赵持恒,刘军,余建飞..基于现场监测与离心试验的填海造地软土地基长期沉降特性研究[J].岩土工程学报,2026,48(z2):28-32,5.基金项目
国家重点研发计划项目(2023YFC3007203) （2023YFC3007203）
中央级公益性科研院所基本科研业务费项目(CKSF2026378/YT) （CKSF2026378/YT）
浙江石油化工有限公司科技项目(ZPCG-01-1162) （ZPCG-01-1162）
安徽省引江济淮集团有限公司科技项目(YJJH-ZT-ZX-20230118528 （）
YJJH-ZT-ZX-20191031216) （）
