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滨海地区粉细砂软弱地基稳定性评价与研究

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粉细砂在滨海地区广泛分布,充分利用粉细砂作为路基填料对滨海地区意义重大.为科学评价滨海地区粉细砂地基,文中在明确滨海地区粉细砂工程特性的基础上,分别采用CKC循环三轴仪和CTX 土力学试验系统进行地震和车辆荷载作用下粉细砂地基的动力稳定性分析,通过循环应力比试验探究滨海地区地基沉降变形,提出以循环应力比为指标的永久变形的预估方程,并进行了粉细砂路基的沉降分析.
Evaluation of Stability of Soft Foundation with Fine Sand in Coastal Areas
Fine sand is widely distributed in coastal areas,and it is of great significance for coastal are-as to fully utilize fine sand as roadbed filler.In order to scientifically evaluate the fine sand foundation in coastal areas,CKC cyclic triaxial apparatus and CTX soil mechanics test system was used to analyze the dynamic stability of the fine sand foundation under earthquake and vehicle loads,based on the clear engineering characteristics of the fine sand foundation in coastal areas.Through cyclic stress ra-tio tests,the settlement deformation of the foundation in coastal areas was explored,a prediction e-quation for permanent deformation was proposed using cyclic stress ratio as an indicator,and the set-tlement analysis of the fine sand roadbed was conducted.

fine sandsoft foundationdynamic stabilitysettlement

李灵杰

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同济大学道路与交通工程教育部重点实验室 上海 201804

粉细砂 软弱地基 动力稳定性 沉降

2024

交通科技
武汉理工大学

交通科技

影响因子:0.495
ISSN:1671-7570
年,卷(期):2024.(2)
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