论文部分内容阅读
将浮式网架结构应用于深海工程可为人类开发深海提供所需要的空间。选取正放四角锥网架为结构单元,利用Morison方程计算波浪力、海流力,通过函数关系找出作用于结构自身荷载的最大值,平均施加到水面以下球节点上,并施加重力、浮力、上部荷载,模拟结构在海洋环境荷载作用下的力学响应,用百年一遇的海况进行校核,得出该网架结构单元相对承载力较高、安全可靠的结论。由于承载力出现较大的富余,为进一步优化结构,可通过网架结构布局上的改进来实现,包括整体上采用抽空四角锥网架等杆件较为简单的网架体系,局部抽除某些内力较小的杆件,或者将抽掉的杆件替换成与钢结构有较好融合且适应海洋环境的其他材料,使得浮式网架结构更经济安全地应用于实际工程。
The application of the floating grid structure to deep sea engineering can provide the space needed for human exploitation of the deep sea. The quadratic pyramid truss is taken as the structural element, the wave force and the sea flow force are calculated by the Morison equation, and the maximum value acting on the self-load of the structure is found through a function relationship, and applied to the ball nodes below the water surface on average with gravity, buoyancy, The mechanical response of the upper structure and the simulated structure under the marine environmental loading is checked with the sea condition in the once-in-a-hundred-year situation. The conclusion is drawn that the relative bearing capacity of the structural unit of the grid is safe and reliable. As the bearing capacity shows a big surplus, to further optimize the structure, it can be realized through the improvement of the grid structure layout, including the simple grid system using the evacuated quadrangular pyramid grid and the like, The internal force of the smaller pieces, or the removal of the bar replaced with steel structure has a better integration and adapt to the marine environment of other materials, making the floating grid structure more economical and secure application to the actual project.