摘要
为解决目前输电塔原状土基础采用剪切法抗拔计算中系数A1和A2的取值问题,依据土力学理论建立抗拔土体极限平衡方程,基于Mohr-Coulomb屈服准则,推导剪切法抗拔计算中系数A1和A2的理论计算公式。重点探讨系数A1和A2的取值特征及其随内摩擦角准和基础深宽比H/D的变化规律,通过与规范(DL/T5219-2005)和技术导则(Q/DG2-T03-2007)送审专题报告进行对比分析,讨论了抗拔承载力计算可能存在的问题,得到一些关于系数A1和A2的取值结论,可为工程设计提供参考。
In order to determine the value of parameters A1 and A2 in antiuplift shearing calculation for the undisturbed soil foundation of transmission towers, the theoretical formula for parameters A1 and A2 is deduced based on the limiting equilibrium and MohrColumn yielding criterion. Then, the paper focuses discussion of the characteristics of parameters A1 and A2 as well as the change law of the internal friction angle and the H/D. By comparing the Technical Specifications （DL/T52192005）with the special report submitted for review, it tackles the possible problems in the antiuplift shearing calculation and makes some conclusions on determining the parameters. This paper can be used as important reference in the design process of transmission tower foundations..
出处
《电网与清洁能源》
2010年第7期39-42,共4页
Power System and Clean Energy
基金
中国电力顾问集团公司科技项目(DG2-T03-2007)
关键词
输电塔
原状土基础
剪切法
抗拔计算
A1
A2
transmission tower
undisturbed soil foundation
shearing method
anti-uplift calculation
A1
A2
