人民长江2016，Vol.47Issue(14)：60-63,4.DOI:10.16232/j.cnki.1001-4179.2016.14.014
考虑初始缝隙的埋藏式光面管临界外压经验公式
An empirical formula for critical external pressure of embedded penstocks without stiffener ring considering initial gap
摘要
Abstract
In order to avoid the buckling of embedded penstocks , taking the embedded penstock without stiffener ring as re-search object , we point out the defects of classical theoretical methods and empirical formulas at home and abroad , and summa-rize the main influential factors on critical external pressure ( CEP ) .A CEP empirical formula that considers initial crevice is then proposed according to regression analysis of a series of test results and prototype data .The effectiveness of the presented method is proved by some engineering cases .关键词
抗外压稳定/临界外压/初始缝隙/经验公式/埋藏式光面管Key words
buckling under external pressure/critical external pressure/initial crevice/empirical formula/embedded pen-stocks without stiffenerring分类
建筑与水利引用本文复制引用
张伟,杨江琪,李伟..考虑初始缝隙的埋藏式光面管临界外压经验公式[J].人民长江,2016,47(14):60-63,4.基金项目
国家自然科学基金项目（51169003，51469004）；广西自然科学基金重大项目（2012 GXNSFEA053002）；广西高等学校高水平创新团队及卓越学者计划 （）
