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地基承载力问题是岩土工程领域最重要的研究课题之一。针对圆形浅基础地基,从空间问题着手,根据极限分析上限分析理论,选择合适的地基破坏模式及机动位移速度场,首次考虑了单元土体所受的侧向土压力对地基极限承载力的影响,同时考虑到土体自重及地面超载等因素的作用,推导出理论上更为合理的三维圆形浅基础地基极限承载力上限解。结合工程实例,用相应Matlab计算程序计算出上限解,并与实测值进行了对比,证明了其方法的合理性与实用性。
The bearing capacity of foundation is one of the most important research topics in geotechnical engineering. According to the upper bound analysis theory of limit analysis and selecting the appropriate foundation failure mode and maneuvering displacement velocity field, starting with the space problem, the circular shallow foundation foundation is considered for the first time considering the influence of lateral soil pressure on the ultimate bearing capacity of foundation The upper limit solution of the ultimate bearing capacity of three-dimensional circular shallow foundation is deduced in theory, taking into account the role of soil self-weight and ground overloading. Combined with the engineering example, the upper limit solution is calculated by the corresponding Matlab calculation program and compared with the measured value, which proves the rationality and practicability of the method.