跨坐式单轨交通轨道梁直击雷防护的应用探讨

摘要

以重庆轨道交通2号线为工程实例,分析了跨坐式单轨轨道梁直击雷防护的必要性.结合2号线工程实际,提出了利用墩柱安装避雷针、安装架空避雷线及安装独立避雷针等3种轨道梁直击雷防护设计方案.从安全可靠性、经济成本、对城市景观的影响等方面分析了3种方案的适应性.介绍了如何利用闪电定位系统资料和地形地貌特征进行最优方案的选择.%Taking Chongqing light rail transit Line 2 project for instance, this paper introduces the necessity of the direct lightning security protection for the straddle-type monorail track beam, analyzes 3 schemes for the direct lightning protection of track beam on Line 2 project, describes the use of the lightning location system data and topography features to find the best solution.