الفهرس | Only 14 pages are availabe for public view |
Abstract The thesis deals with the problem of reaching the optimum design of steel piperacks. Piperacks exist in different industrial structures, they are subjected to external forces applied by pipes and wind. The different constraints are taken into consideration to achieve a safe and optimum solution. The design criteria of piperacks consider recent loads in additions to future expansion conditions. Optimum design of pipe racks means reaching of minimum cost of the piperacks, which means reaching of minimum weight or minimum volume of the piperacks. Design of piperacks depends on both the clear span of intersection and the clear head underneath it. The design variables which govern the structure cost are frame members cross-section dimensions which will be changed up to reaching the optimum value within the constraints applied. In this research, a model had been constructed using (ANSYS) structural program. The model uses the (First order method) to carry out the optimization process. The model was verified by applying it to several pre-solved structural systems. Also, it was applied to different practical piperacks systems. The model proved its ability to be applied to similar structural problems. |