戈兰滩水电站坝顶门机及交通桥设计

Design on Dam Crest Gantry Crane and Access Bridge of Gelantan Hydropower Station

戈兰滩水电站坝顶门机及交通桥的门机轨道钢梁由于施工布置及进度的需要,先期作为临时施工门机轨道梁,后期作为永久闸门启闭机桥,即施工门机和永久门机轨道共用钢梁。简要介绍了坝顶门机及交通桥的使用及结构布置特点,梁系依据不同需要选择钢筋混凝土和钢箱梁作为承重体系。通过对坝顶闸门启闭永久门机和施工门机轨道共用钢梁进行优化设计,在满足施工门机和永久门机使用要求的同时,尽量减少后期拆除工作量,既满足了施工工期的要求,也取得了较好的经济效益。

For the need of construction layout and schedule,the track steel girder of dam crest and access bridge gantry crane of Gelantan hydropower station is used as temporary track girder of construction gantry crane at preceding stage,and as common track steel girder of permanent gate bride,i.e.construction gantry crane and permanent gantry crane at later stage.This text briefly introduces the usage and structural features of dam crest gantry crane and access bridge.The optimum design of common track steel girder will try to reduce the demolishment quantities of later stage under the condition of meeting with the usage requirement of construction gantry crane and permanent gantry crane,which can not only meet with the requirement of construction period,but will get better economic benefits.