水利水电技术2012，Vol.43Issue(12)：82-85,4.
考虑应变硬化的水电站压力钢管整体安全评估
Integral safety evaluation on steel penstock under consideration of strain-hardening effect
摘要
Abstract
A method for integral safety evaluation on steel penstock under the consideration of strain-hardening effect is put forward herein. The integral safety coefficient is introduced into this method as the evaluation indexes for the bearing capacity limit state equation , and then the elasto-plastic analysis is taken to solve both the ultimate structural bearing capacity and the integral safety factor after the consideration of the strain-hardening. Furthermore, the limit value of the structural integral safety factor is determined in accordance with the related design codes and specifications for penstock at home and abroad and a structural integral safety evaluation method , which can be applied in a complete set, is finally formed as well. The study shows that this method can provide a new way for the safety evaluation on bearing capacity of penstock.关键词
水电站压力钢管/整体安全评估/应变硬化/结构极限承载力Key words
hydropower station/penstock/integral safety evaluation/strain-hardening/ultimate structural bearing capacity分类
建筑与水利引用本文复制引用
张伟,张瑾,杨绿峰,刘敬敏..考虑应变硬化的水电站压力钢管整体安全评估[J].水利水电技术,2012,43(12):82-85,4.基金项目
国家自然科学基金项目(51168003,51169003,50909021) （51168003,51169003,50909021）
广西自治区主席基金资助项目(2010GXNSFD169008). （2010GXNSFD169008）
