Validation of Structural Behaviour of Precast Ultra High Performance Fiber Reinforced Cementitious Composite Cross Arms for Electrical Lines

面对传统建筑材料老化和过早变质带来的日益严重的问题，对耐用材料的需求日益明显。该项目对水电事业具有很高的经济和技术重要性。目前，高压输电线路的杆件和横臂大多由木材或钢材等传统材料制成，但由于腐烂、尺寸不稳定、钢材腐蚀、可用性和耐久性不足等问题，带来了一些挑战。这些问题向电力传输行业提出了挑战，要求他们寻找新的高性能/耐用材料作为当前木材和/或钢交叉臂的潜在替代品。超高性能混凝土(UHPC)的发展提供了各种有趣的应用。超高性能混凝土的特性使其成为建造薄壁构件的最终材料。

Facing increasing problems due to aging and premature deterioration of traditional construction materials, the need for durable materials has become increasingly apparent. This project is in an area of high economic and technological importance to the hydro-power utilities. Currently, most of the high voltage transmission line poles and their cross arms are made from traditional materials such as wood or steel; however some challenges have occurred due to decomposition, dimensional instability, steel corrosion, availability, and lack of durability. These problems challenged the electrical power transmission industries to look at new highperformance/ durable materials as a potential replacement for the current wood and/or steel cross arms. The development of Ultra-High Performance Concrete (UHPC) offers a variety of interesting applications. The characteristic properties of the UHPC make them the ultimate materials for the construction of thin members.