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采用弹塑性有限元接触分析方法研究了阳逻电厂～汉口变500kV输电线路跨越塔在水平荷载、竖直荷载及其组合荷载作用下,桩基承台及桩基与土体的裂缝开展及分布规律;同时,采用二维及三维有限单元法分析了跨越塔基础土层渗透坡降及渗流场分布规律;在此基础上,采用极限平衡分析方法研究了地下水作用情况下,跨越塔基础堤防背水坡的抗滑稳定性。通过系统分析跨越塔工程对堤防安全的影响,表明阳汉线跨越塔工程满足堤身抗滑和渗透稳定的要求,对堤防防洪影响不大。
The elasto-plastic finite element contact analysis method was used to study the development and distribution of pile foundation and pile foundation and soil under the horizontal load, vertical load and combined load of Yangluo Power Plant ~ Hankou Substation 500kV transmission line. At the same time, using the two-dimensional and three-dimensional finite element method to analyze the infiltration slope and the distribution law of the seepage field across the tower foundation soil, on this basis, using the limit equilibrium analysis method to study the effect of groundwater, Slope slip stability. By systematically analyzing the impact of the cross-tower project on the dike safety, it is shown that the cross-tower project of the Yang-Han Line meets the requirements of the anti-slide and infiltration stability of the dike body and has little effect on flood control of the dike.