摘要
在新建工程的可研和初步设计阶段,从新的设计条件出发推算铁塔质量,可以帮助完成杆塔选型和规划、路径比选、杆塔优化排位等,对提高概算准确性、节省工程造价具有重要意义。为此在特高压直流输电线路铁塔质量分析计算的基础上,对荷载更大、塔头布置形式多样化的特高压交流输电线路铁塔质量进行深入研究,并推广至500 kV超高压交流输电线路领域。采用"1 000 kV浙福线工程"及"500 kV铁塔通用设计"中不同塔型、呼高所对应的质量数据样本,建立回归分析数学模型,使用Matlab软件得到质量计算关系式。将计算结果与实际铁塔质量作比较,进一步验证了该方法及公式的准确性和适用性。对于重覆冰区线路,则应考虑导地线脱冰跳跃时产生不平衡张力的影响,修正和补充质量计算关系式。
At the stage of feasibility study and preliminary design for a new construction, tower weight can be correctly calculated under new design conditions, which may contribute to tower type selection and planning, path scheme comparison, optimum pole position and so on; it is significant for increasing the accuracy of financial estimation and decreasing construction cost. Therefore, on the basis of the calculation and analysis of tower weight in UHV DC transmission line, this paper intensively studied the tower weight in UHV AC transmission line which had heavier load and varied tower head forms, as well as the tower weight in 500 kV EHV transmission line. Taking the towers with different types and weights in ＂1 0130 kV Zhefu transmission line＂ and ＂500 kV tower universal design＂ as the data sample, the mathematical model based on regression analysis was established, and the mathematical relationship were obtained in simulation software Matlab. The accuracy and feasibility of this method was validated through the comparison between calculation results and actual weight. As for medium ＆ heavy icing areas, the calculation formulas should be revised and complemented by considering the influence of unbalanced tension of ice-shedding.
出处
《电力建设》
2014年第6期106-111,共6页
Electric Power Construction
