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随着送电线路工程大量采用掏挖基础及人工挖孔桩基础,原状土基础研究也越来越深入.《架空送电线路基础设计技术规定》对同样深度的掏挖基础和挖孔桩基础设计原则规定有很大的不同.因此,需要通过对掏挖基础与周围土体的耦合数值计算,探讨原状土基础的受力机理及土体抗力分布,从而更直观地反映掏挖基础与土体的相互作用.利用ANSYS平台建立参数化数值模型,得到相同地质条件不同柱长基础在考虑土抗力时的结果.对该类结果进行数学统计分析,并对不同的受力机制进行比较,总结得出露头、柱长和土抗力的关系,获得较为准确的基础受力分析数据,为规范的制定和实际工程设计提供依据.
With the extensive use of excavation foundation and artificial digging pile foundations in transmission line engineering, the research on undisturbed soil foundation is also getting more and more in-depth. The “Technical Specifications for Design of Overhead Transmission Lines” Therefore, it is necessary to discuss the mechanism of stress and the distribution of soil resistance of undisturbed soil so as to more intuitively reflect the relationship between the basis of excavation and soil Body interaction.Analyzed numerical model with ANSYS platform to obtain the results of different column length foundation with the same geological conditions considering soil resistance.Mathematical statistical analysis of such results and comparison of different stress mechanisms Obtained the outcrop, column length and the relationship between soil resistance, access to more accurate basis for the force analysis of data for the development of norms and provide the basis for the actual engineering design.