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摘要:目的 探究不同设计方案复合横担塔与常规塔之间工程量的差异，可在规划设计阶段快速开展方案比选，为不同场景复合横担塔的应用提供参考。方法 文章以500 kV杆塔为例，将杆塔划分为多个部件，并将其与复合横担塔设计方案进行比对分析，同时对塔重，基础混凝土量，金具和绝缘子工程量进行测算，研究各复合横担塔与常规塔工程量的差异。结果 测算结果表明：对比常规塔，复合横担塔设计方案1经济性较好，走廊压缩性能较好，应急抢修性能较差；复合横担塔设计方案2经济性一般，走廊压缩性能较好，应急抢修性能一般；复合横担塔设计方案3经济性较差，走廊压缩性能较好，应急抢修性能较好。结论 文章研究成果可以为今后的复合横担方案选择提供参考。Abstract:Introduction Exploring the difference of quantities between composite cross arm tower and conventional tower in different design schemes can quickly carry out scheme comparison and selection in the planning and design stage, and provide reference for the application of composite cross arm tower in different scenarios.Method Taking the 500 kV tower as an example, the tower was divided into several parts, and compared with the design scheme of the composite cross arm tower. At the same time, the tower weight, the amount of foundation concrete, the quantities of fittings and insulators were calculated, and the differences between the quantities of each composite cross arm tower and the conventional tower were studied.Result The calculation results show that compared with the conventional tower, the design scheme 1 of composite cross arm tower has better economy, better corridor compression performance and poor emergency repair performance; Design scheme 2 of composite cross arm tower has general economy, good corridor compression performance and general emergency repair performance; Design scheme 3 of composite cross arm tower has poor economy, good corridor compression performance and good emergency repair performance.Conclusion The research results of this paper can provide reference for the selection of composite cross arm scheme in the future.
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叶筠英庄志翔,张珏,唐峦等.500 kV双回路复合横担直线塔设计方案研究[J].南方能源建设,2022,09(增刊1):112-118.
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表 1 复合横担材料参数
Table 1
Composite cross arm material parameters 项 目 绝缘芯棒 绝缘管 标准值 标准值 抗拉强度 ≥1100 MPa ≥300 MPa 拉伸模量 ≥45 GPa ≥20 GPa 弯曲强度 ≥900 MPa ≥250 MPa 弯曲模量 ≥36 GPa ≥20 GPa 压缩强度 ≥350 MPa ≥250 MPa 压缩模量 ≥45 GPa ≥20 GPa 面内剪切强度 ≥35 MPa — 泊松比 0.3~0.4 0.3~0.4 
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表 2 杆塔部件重量及占总塔重比例
Table 2
Weight of tower components and proportion in total tower weight 杆塔部件 设计方案 估算塔重/t 塔重占比/% 地线支架 常规塔 1.87 3.0 复合横担塔-方案1 2.65 5.5 复合横担塔-方案2 2.65 4.9 复合横担塔-方案3 2.65 4.3 导线横担 常规塔 7.84 12.4 复合横担塔-方案1 0.00 0.0 复合横担塔-方案2 0.00 0.0 复合横担塔-方案3 0.00 0.0 变坡以上塔身 常规塔 14.66 23.2 复合横担塔-方案1 12.70 26.5 复合横担塔-方案2 12.70 23.5 复合横担塔-方案3 18.93 30.4 变坡以下塔身 常规塔 29.48 46.7 复合横担塔-方案1 24.64 51.4 复合横担塔-方案2 29.48 54.5 复合横担塔-方案3 30.86 49.6 塔腿 常规塔 9.28 14.7 复合横担塔-方案1 7.93 16.6 复合横担塔-方案2 9.28 17.1 复合横担塔-方案3 9.77 15.7 总塔重 常规塔 63.13 100.0 复合横担塔-方案1 47.92 100.0 复合横担塔-方案2 54.11 100.0 复合横担塔-方案3 62.21 100.0
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表 3 杆塔基础工程量对比
Table 3
Comparison of tower foundation quantities 项目 基础混凝土量/m³ 比常规塔 常规塔 63.60 1.00 复合横担塔-方案1 59.52 0.94 复合横担塔-方案2 63.60 1.00 复合横担塔-方案3 66.68 1.05
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表 4 金具绝缘子工程量对比
Table 4
Comparison of quantities of fittings and insulators 项目 挂线金具/ t 玻璃绝缘子/片 常规塔 0.48 250 复合横担塔-方案1 0.67 0 复合横担塔-方案2 0.67 0 复合横担塔-方案3 0.67 0
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表 5 杆塔方案经济性对比
Table 5
Economic comparison of tower design schemes 项目 常规塔 复合横担塔-方案1 复合横担塔-方案2 复合横担塔-方案3 塔重/t 63.13 47.92 54.11 62.21 基础混凝土/m³ 63.6 59.52 63.6 66.68 绝缘子/片 250 0 0 0 金具/t 0.48 0.67 0.67 0.67 复合横担/套 0 1 1 1 费用/万元 99.4 100.8 109.5 120.2
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