蔡家嘉陵江大桥防雷设计

Lightning Protection Design for Caijia Jialing River Bridge

重庆蔡家嘉陵江大桥是一座大跨双塔双索面等高塔斜拉桥,主桥南北向地势开阔,主塔高度均超过200 m,孤立于旷野,极易遭受雷击。为解决桥梁防雷击的问题,介绍了蔡家嘉陵江大桥的防雷设计方案,总结了桥梁防雷设计关键技术要点,供类似大桥防雷设计参考。

Caijia Bridge crossing over the Jialing River in Chongqing is a long-span cable-stayed bridge with double cable planes and double pylons.The bridge site is in the open land and the height of bridge tower is over 200 meters,so the bridge is vulnerable to lightning strike.This paper introduces the lightning protection design for Caijia Bridge and summarizes its key technology points which could provide reference for similar bridges.