Abstract：Research purposes: It is dangerous and difficult to erect the bridge under condition of the 500 kV high voltage transmission line crossing highway bridge in low altitude，so it is necessary to study the technical measures for safely erecting the bridge in order to ensure the safety of the operational person，device and high voltage power facilities and make the bridge construction successfully under － passing the high voltage line．
Research conclusions: The selection of the plan for erecting bridges is made． The working condition and the strength and current of the high voltage induction field under condition of 500 kV power line crossing in low altitude are calculated and analyzed on the base of the plan for erecting the bridge with bridge girder erection machine． The harm situation of the operational person and equipments is analyzed． The protective technical measures for ensuring the safety of the person，equipments and power facilities are offered．
覃文元. 超高压电线低空跨越下桥梁安装的安全技术[J]. 铁道工程学报, 2012, 29(1): 40-44.
QIN Wen － yuan. Safe Technology for Erecting Bridge Crossing Extra － high Voltage Power Transmission Lne in Low Altitude. 铁道工程学报, 2012, 29(1): 40-44.
Huang Wentao， Wang Zhuomin， Liu yongkang． Methods and Applications of Overhead Transmission Line Fault Location［J］． Guangdong Electric Power， 2005( 1) : 23 － 25．
［2］ JGJ 46—2005，施工现场临时用电安全技术规范［S］．
JGJ 46—2005，Construction Site Temporary Electrical Safety Specifications［S］．
2012, Vol. 29 
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