Calculation of Equivalent Thermal Conductivity of Soil Around the Power Cable in Horizontal Pipe Jacking Based on Sine and Cosine Optimization Algorithm
Horizontal pipe jacking is an important laying approach for power cables crossing rivers and streets.As an im-portant parameter influencing the heat dissipation,the soil thermal conductivity is crucial to the accurate calculation of the current carrying capacity of the cable.In this regard,a thermal-flow coupled finite element model is developed for the hor-izontal pipe-jacking laying of double-circuit cables.The generalized and improved sine and cosine optimization algorithm is used to optimize the equivalent thermal conductivity in the engineering laying scenario.The equivalent soil thermal conduc-tivity and the cable carrying capacity of the power cables under the engineering scenario are accurately calculated.Moreo-ver,the improvements to the sine and cosine optimization algorithm endow the improved algorithm with a stronger inter-nal search capability and an accelerated optimization speed.
horizontal pipe jackingsine and cosine optimization algorithmsoil thermal conductivityfinite element method
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