Application of cable erection method to construction of concrete arch bridge in alpine and high elevation area

摘要

1# bridge traffic engineering of LiangHeKou hydropower station is located in ganzi region in sichuan province. The altitude of main construction areas lies above the 2700m, perennial mean temperature ranges from -4.9 – 7.9°C, extreme low temperature reach -42.9°C, the temperature difference between day and night, which may adversely affect the execution of the precast concrete and cable erection. Based on the fully and deeply analyse and optimal approaches, We solved several key engineering challenges in precast arch box construction, and also provided valuable experiences for similar projects.