压力管道大断面竖井井口钢结构平台设计  

Design of Steel Structure Platform for Shaft Head of Pressure Pipe with Large Section

作　　者：叶元乐 雷小琪 YE Yuan-le;LEI Xiao-qi(POWERCHINA SINOHYDRO BUREAU 16 CO.,LTD.,Fuzhou 350000,China)

机构地区：[1]中国水利水电第十六工程局有限公司,福建福州350000

出　　处：《云南水力发电》2020年第4期120-124,共5页Yunnan Water Power

摘　　要：两河口水电站压力管道竖井由上、上弯段、竖井段、下弯段及下平段组成,因上弯段存在大半径连接,压力管道大断面竖井井口需布置钢桁架平台,并作为开挖、混凝土施工材料、设备吊运使用平台,为保证压力管道竖井施工安全,对井口钢桁架进行受力分析和结构设计,并对其强度、刚度和稳定性进行了验算。The pressure pipe shaft of Lianghekou Hydropower Station consists of upper horizontal section,upper curved section,vertical shaft section,lower curved section and lower horizontal section.Due to the large radius connection of the upper curved section,the steel truss platform shall be arranged at the wellhead of the penstock large section shaft,which shall be used as the platform for excavation,concrete construction materials and equipment hoisting.In order to ensure the construction safety of the penstock shaft,the stress analysis and structural design of the wellhead steel truss are carried out,and its strength,rigidity and stability are checked.

关 键 词：压力管道竖井 钢结构平台 设计验算 稳定性 

分 类 号：TV732.4[水利工程—水利水电工程] TU391[建筑科学—结构工程]