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Three Dimensional Finite Element Modeling and Analysis of Different Subway Tunnels Stray Current Fields

机译:不同地铁隧道杂散电流场的三维有限元建模与分析

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In order to analyze the distribution rules and influence of stray current on subway rectangulartunneland subwayShield tunnel, threedimensional models were built separately. By changing the values of carry-current, ansys was usedtoanalyzeunder different geological conditions.Simulations show that the potential attenuation is nonlinear from the subwaytunnel to the surrounding underground.The potential of the same location of surrounding media is different with differentcarry-current.The amount of leakage stray current of rectangular tunnel is less than Shield tunnel under same geologicalcondition and same carry-current. Each points stray current in situation of surrounding soil media subway tunnelshield can be analyzed by the three-dimensional finite element model, and provide the basis for the protection range ofstray current and the protection at a specific location.
机译:为了分析杂散电流对矩形矩形隧道地铁盾构隧道的分布规律和影响,分别建立了三维模型。通过改变载流值,在不同的地质条件下使用ansys进行了分析,仿真表明,从地铁隧道到周围地下的电势衰减是非线性的。周围介质相同位置的电势随载流量的不同而不同。在相同的地质条件和相同的载流条件下,矩形隧道的漏杂散电流小于盾构隧道。可以通过三维有限元模型分析周围土介质地铁隧道盾构中各点的杂散电流,为杂散电流的保护范围和特定位置的保护提供依据。

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