College;
of;
Marine;
Geo-scienees,;
Oeean;
University;
of;
China,;
Qingdao;
266100,;
P.;
R.;
China;
Key;
Laboratory;
of;
Submarine;
Sciences;
and;
Exploration;
Technology,;
the;
Ministry;
of;
Education;
of;
China,;
Qingdao;
266100,;
P.;
R.;
China;
Department;
of;
Maritime;
Systems;
Engineering,;
Texas;
A;
&M;
University;
at;
Galveston,;
Galveston,;
TX;
77554,;
USA;
海底管道; 安全等级; 跨度; 伊拉克; 基金; 免费; 计算; 评估;