摘要
钢绞线断裂是预应力损失的一个重要因素。我国中核集团公司自主设计的第三代核电技术"华龙一号"安全壳结构采用倒"U"型钢束形式,但目前尚没有倒"U"型钢束断裂引起混凝土预压应变损失的解析方法,这给预应力损失的评估带来了盲目性。鉴于此,通过理论推导求解了倒"U"型灌油或灌蜡钢束发生断丝后,钢束周边混凝土预压应变的变化幅值。
The breakage of the steel strand is a key factor causing prestress loss of containment concrete. The containment structure for ＂Hualong No. 1 ＂reactor with the third generation nuclear power technology designed by China National Nuclear Corporation employed the inverted U-shaped steel tendon. However there was assess no analytic method for calculating the pre-strained loss of the concrete caused by the breakage of the inverted U-shaped steel strand,which made the prestress loss relatively blind. For that reason,the paper utilized theoretical method to deduced and calculate strain variation of the concrete after the breakage of the steel strand,and the results provided the theoretical basis for the assessment and analysis of the prestress loss.
出处
《工业建筑》
CSCD
北大核心
2016年第10期36-38,71,共4页
Industrial Construction
关键词
安全壳
预应力
钢绞线断裂
应变
containment
prestress
breakage of the steel strand
strain
