新型预应力闸墩结构在景洪水电站工程中的应用  

Application of Improved Prestress Anchor Block in Jinghong Hydropower Station

作　　者：何兆升[1] 凌云[1] 李玲云[1] 周钧[1] 

机构地区：[1]中国水电顾问集团昆明勘测设计研究院,云南昆明650051

出　　处：《水力发电》2008年第4期50-52,64,共4页Water Power

摘　　要：景洪水电站表孔采用大型弧形工作门挡水,孔口尺寸为15 m×21 m,具有推力大、力臂长的特点,必须采用预应力锚索平衡推力。而国内已建工程的预应力闸墩普遍存在拉锚系数偏大,未充分利用锚索能力的问题。为提高锚索的预应力利用效果,采用了平行布置锚索并在锚块内开设预留槽的新型预应力闸墩结构形式,减少了施工干扰,加快了施工进度,节约了锚索用量,取得了良好的效果。In Jing Hong hydropower station, Large-scale arc gates with size of 15m×21m （widthxheight） used for surface bay have so huge thrust and long moment arm that tendons must be adopted to bear it. In order to reduce relatively large pulling coefficient of prestress anchor blocks existed in many internal hydropower stations and take full advantage of tendons in anchor blocks, we adopted pre-slot pier structural shape to reduce pier stress. This new type used in Jing Hong hydropower station have reduced disturbing of construction, expedited construction progress, saved amount of works and gained favourable effect.

关 键 词：新型预应力闸墩 有限元 景洪水电站 

分 类 号：TV662.2[水利工程—水利水电工程] TV741