无人船基地项目结构设计的若干问题

Several problems in the structural design of the unmanned ship base project

随着我国近几十年来经济的蓬勃发展,建筑结构的平面不规则、楼板不连续、竖向不规则、框架边筒(筒偏置)、一向少墙等复杂结构等纷纷涌现,使得结构构件在竖向荷载或者水平荷载作用下将产生较大的轴力、剪力,以及剪扭效应等。通过对结构体型复杂的无人船基地项目进行了多方案的计算分析比较;对船头连体采取弱连接,有助于减少左右船体之间的相互影响;连廊结构采用“正V”形式,节点构造相对简单;船尾两翼悬挑采用整层桁架悬挑,内力分布较均匀;对船头悬挑和连廊进行了舒适度分析,结果表明竖向频率和加速度峰值均满足规范要求;并对结构防火措施进行了总结。

With the vigorous development of my country’s economy in recent decades,Complex structures such as irregular planes,discontinuous floors,vertical irregularities,frame side tubes(tube offsets),and always few walls have emerged in the building structure.Therefore,the structural members will generate large axial force,shear force,and shear-torsional effect under the action of vertical load or horizontal load.Through the multi-scheme calculation and analysis of the unmanned ship base project with complex structure;The weak connection is adopted for the conjoined body at the bow,which helps to reduce the mutual influence between the left and right hulls;the corridor structure adopts the“positive V”form,and the joint structure is relatively simple;the cantilever of the two wings at the stern adopts the whole-layer truss cantilever,and the internal force distribution is relatively simple.Uniformity;the comfort degree of the bow overhang and corridor were analyzed,and the vertical frequency and acceleration peak value met the requirements of the specification;and the structural fire protection measures were summarized.