地下水对残积土地基承载力影响的试验研究
摘要:对7个场地的残积土进行室内土工试验,得到天然状态及饱和状态下土的物理、力学指标,应用地基规范公式及Terzaghi极限承载力公式,分析地下水的状态对残积土地基承载力的影响,得到残积土浸水或泡水后承载力下降幅度可达1.4%~60.7%,通过12台残积土地基平板载荷试验成果,验证了残积土经短时浸泡及较长时间泡水后,地基承载力特征值明显降低,下降幅度达到11%~57.5%。
Abstract:The physical and mechanical indexes of residual soil in natural state and in saturation state on seven sites were obtained by the soil tests,based on the formulas of code for design of building foundation and the formulas of Terzaghi ultimate bearing capacity foundation,the influence on the bearing capacity of residual soil due to the state of ground water are analyzed,the decreasing range of the bearing capacity of residual soil after soaking by water may descend 2.8 to 58.8 percent.The results of twelve loading tests indicate that,the characteristic value of subsoil bearing capacity of the residual soil after short time and long time soaking by water decreased obviously,the decreasing range can reach 11 to 57.5 percent.
中文标题：
地下水对残积土地基承载力影响的试验研究
Research on the Influence of Ground Water on the Bearing Capacity of Residual Soil
作者：
刘俊龙
Liu Junlong
作者简介:刘俊龙,男,1968年生,汉族,福建南安人,大学本科,正高级工程师,主要从事岩土工程勘察、监测、检测等工作。E-mail:LiujL126@126.com
通讯地址：
福建省建筑设计研究院, 福建福州 350001
FujianArchitecturalDesignandResearchInstitute,Fuzhou350001,Fujian,China
中图分类号:TU470.3
doi:10.3969/j.issn.1007-2993.2017.02.002
出版物：岩土工程技术
收稿日期:2017-01-09
网络出版日期:2021-07-06
关键词:残积土,地基承载力,地下水,泡水
Key words:residual soil,bearing capacity,ground water,water soaking
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