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Φ230×21m环形部分预应力大弯矩高压电杆最近在江苏无锡县水泥制品厂问世,并通过省级科技新产品鉴定。这种部分预应力电杆采用了大小头的锥形结构,小头控制预应力筋的数量,大头配置非预应力筋,充分发挥了预应力和非顶应力钢筋的受力性能、该电杆强度高于非预应力电杆,又不会发生预应力电杆的纵向裂缝。该产品经过现场力学性能试验和国家混凝土水泥制品质量监督检验测试中心的检验。以及使用运行考
The Φ230×21m circular partial prestressed large bending moment high voltage pole was recently introduced in Jiangsu Wuxi County Cement Products Factory, and passed the provincial-level scientific and new product appraisal. This kind of partially prestressed electric pole adopts a tapered structure with large and small heads. The small head controls the number of prestressed tendons. The large head is equipped with non-prestressed tendons, giving full play to the mechanical properties of prestressed and non-top stressed steel bars, and the electric pole. The strength is higher than that of non-prestressed poles, and longitudinal cracks of prestressed poles do not occur. The product has passed the field mechanical performance test and the national concrete cement product quality supervision and inspection and testing center. And using the test