中国造船
中國造船
중국조선
SHIPBUILDING OF CHINA
2013年
1期
109-113
,共5页
海底管道%横向屈曲%屈曲间距%初始几何缺陷%解析解
海底管道%橫嚮屈麯%屈麯間距%初始幾何缺陷%解析解
해저관도%횡향굴곡%굴곡간거%초시궤하결함%해석해
pipeline%lateral buckling%buckling spacing%initial imperfection%analytical solution
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.
平坦海床上裸鋪管道不可能僅在一箇位置髮生屈麯,而是在一繫列位置均有可能髮生.為瞭激髮第二箇屈麯,兩箇屈麯之間應該保持足夠的間距.如果兩箇屈麯之間的距離過小,則相鄰屈麯之間的軸嚮力將達不到第二箇屈麯的臨界荷載,無法激髮第二箇屈麯.論文提齣瞭最小屈麯間距的滑動距離判彆法,給齣瞭最小屈麯間距的判彆公式.
평탄해상상라포관도불가능부재일개위치발생굴곡,이시재일계렬위치균유가능발생.위료격발제이개굴곡,량개굴곡지간응해보지족구적간거.여과량개굴곡지간적거리과소,칙상린굴곡지간적축향력장체불도제이개굴곡적림계하재,무법격발제이개굴곡.논문제출료최소굴곡간거적활동거리판별법,급출료최소굴곡간거적판별공식.
@@@@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 global buckling capacity, this buckle will not be triggered. In this paper, sliding distance method is proposed, and the minimum buckling spacing is given.
