摘要
平坦海床上裸铺管道不可能仅在一个位置发生屈曲,而是在一系列位置均有可能发生。为了激发第二个屈曲,两个屈曲之间应该保持足够的间距。如果两个屈曲之间的距离过小,则相邻屈曲之间的轴向力将达不到第二个屈曲的临界荷载,无法激发第二个屈曲。论文提出了最小屈曲间距的滑动距离判别法,给出了最小屈曲间距的判别公式。
An exposed pipeline may buckle not only at one location, but also at a series of locations. In order to activate the second imperfection to buckle, a build up of sufficient spacing between the adjacent buckles is required. If spacing between the adjacent buckles is too small, effective axial force when reaching at the second buckle is less than the axial sliding distance method is proposed, global buckling capacity, this buckle will not be triggered. In this paper, and the minimum buckling spacing is given.
出处
《中国造船》
EI
CSCD
北大核心
2013年第1期109-113,共5页
Shipbuilding of China
基金
山东省自然科学基金项目((ZR2011DL004)
大连理工大学国家重点实验室开放基金项目(LP1115)
关键词
海底管道
横向屈曲
屈曲间距
初始几何缺陷
解析解
pipeline
lateral buckling
buckling spacing
initial imperfection
analytical solution
