输电线路轻钢防撞结构等效静力与能量分析

The Equivalent Static and Energy Analysis of Light Steel Anticollision Structure in Transmission Line

传统输电线路杆塔的防撞墩土建工程量大,现场施工难度高,占据水域范围广,影响航道尺度,可靠性和安全性有待提高。为此提出了新型的轻钢防撞结构,通过建立力学分析模型,对防撞结构进行等效静力分析与能量分析,综合比较在发生碰撞时有防撞结构和无防撞结构的各种工作状态。通过仿真模型采集位移变形、应力和系统整体的总能量、动能、内能等数据,验证轻钢结构的防撞性能。与传统防撞墩相比,轻钢结构材料和防撞型式合理,防撞结构的可靠性和安全性高,结构的制造、安装、维护和修理的经济性好,适用于输电线路在水域中架设杆塔的防撞要求,满足安全可靠和经济适用的协调统一。

The construction project quantity of the traditional transmission line tower anti-collision pier is large. The construction is quite dififcult and it takes up wide waters. Which sometimes will affect the channel scale. Reliability and safety needs to be improved. This paper proposes he assembly model of impact structure, the mechanical analysis model was established. Through the analysis and the energy equivalent static analysis of the impact structure, structure,comprehensive comparison in the event of a collision with all kinds of working state of crash worthy structure and anti-collision structure was done. The displacement, stress and overall system total energy, kinetic energy, internal energy and other data which were collected in the simulation model verify the anti-collision performance of light steel structure assembled. Compared with the traditional anti-collision pier, assembly type structure material and reasonable structure type of collision avoidance have higher reliability and safety. And construction, installation, maintenance and repairing of the economy is better. The anti-collision performance of light steel structure assembled is suitable for transmission line tower anti-collision in the waters, it can meet the safety and reliability of the uniifcation and economic applicability.