水电站压力钢管碳纤维布补强加固试验研究  

Experimental research on penstocks for hydropower stations strengthened with CFRP sheets

作　　者：魏晓斌[1] 雷艳[2] 霍国良[3] 刘礼华[1] 袁文阳[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [3]武汉大学动力与机械学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2010年第6期708-710,718,共4页Engineering Journal of Wuhan University

基　　金：湖北省建设科技攻关项目(编号:K200512)

摘　　要：为确保电力生产安全,介绍了一种对水工压力钢管进行结构补强加固的新方法——外包碳纤维布法,并对该方法补强加固的效果进行了试验研究,试验时分别对钢管外包了1层和2层碳纤维布,给出了试验钢管环向应变与内水压力之间的变化关系,结果表明外包碳纤维布法可以大幅提高压力钢管的承载能力.该方法施工操作简便,所需工期短,基本上不影响机组的正常运行,在生产实践中具有很强的实用价值.In order to ensure the safety of electricity production,a new method for strengthening penstock with carbon fiber reinforced polymer（CFRP） sheet is introduced.The experimental research on the effect of this method has also been done.In the experiment,the penstocks that wrapped with one and two layers of CFRP sheets respectively are tested.And the relation between the hoop strain in tested penstock and the internal water pressure is given according to the experiments.The results show that it can be a substantial increase in the bearing capacity of the penstock.The construction of this method is simple and a short period is required; so it not affect the normal operation of generating unit.It has a good practical value in the production practice.

关 键 词：压力钢管 碳纤维布 加固 试验研究 

分 类 号：TV311.3[水利工程—水工结构工程]