Optimization Research on the Bolt Arrangement of a Double-Wall Steel Insulation Silo with Multiple Bolted Joint

Double-wall fabricated steel insulation silo with multiple bolted joints is a new structure form of silo. The number of bolt studs used in the1000-ton silo is 12240 which take too much time and money. In order to cut down the cost and shorten the construction period, 6 alternative schemes are put forward to optimize the bolt arrangement. By comparison, Schemes 6 is adopted. The model which uses the original bolt arrangement is defined as Model 1. The optimized model is defined as Model 2. The stress and deformation of these two models were comparatively analyzed. The results show that the maximum stress and the maximum displacement of Model 2 are both smaller than the specified values. Furthermore, the number of bolt studs used in Model 2 is 6600 which is 5640 less than the original number. The bolt studs are saved 46.1%.