漫湾水电站压力钢管弹性垫层的设计与实践  

Design and practice of elastic cushion layout of the power penstock in Manwan Hydropower Station

作　　者：黄光明[1] 王忠勇[1] 李立年[1] 

机构地区：[1]昆明勘测设计研究院

出　　处：《水力发电》1997年第1期25-27,共3页Water Power

摘　　要：漫湾水电站发电压力钢管ＨＤ值达９５７．６ｍ２，而下弯段及平段的混凝土覆盖厚度仅２．９５ｍ，因此决定设置弹性垫层来解决结构问题。通过大量的有限元计算确定了垫层的厚度、弹模，控制管内水压力的外传比例。通过试验选择ＥＰＳ泡沫板作为垫层材料。投产运行３年来，压力钢管运行正常，管顶混凝土未发现裂缝，说明设计是成功的。The HD of power penstock in Manwan Hydropower Station is 957 6 m 2 but thickness of concrete cover in the lower bend section and lower horizontal section is only 2 95 m,so that it is decided to set a elastic cushion to solve the structural question.Based on finite element calculation,the cushion thickness,elastic modulus,etc.have been determined.Through various tests,EPS foamed plate has selected as cushion material.Since it has been put into operation for three years,the penstock has operated normally and no crack occurs in the concrete covering the penstock,which shows the design is successful and has certain valuable to similar projects for reference.

关 键 词：水电站 压力钢管 弹性垫层 设计 

分 类 号：TV732.41[水利工程—水利水电工程]