出版社：The Japan Society of Naval Architects and Ocean Engineers
摘要：Offshore structures should have a high degree of structural safety even under extreme environmental loadings. The authors have developed a composite steel-concrete structure of sandwich system for the strength members of huge offshore structures, where concrete is placed between steel plates.In the previous papers, the authors carried out both experimental and theoretical investigations into the strength of the composite structure. It was clarified that the composite structure has various excellent properties : the ultimate load-bearing capacity of the composite structure is very high and it can absorb a great deal of energy until failure under any type of loading conditions.In the present paper, the authors carried out both experimental and theoretical investigations on the toughness of the sandwich composite stuctures. Experiments were carried out for the two-dimentional models of composite structures under pure bending and combined shear and bending as well. A nonlinear analysis was developed to predict the toughness of sandwich beam under pure bending. In the analysis the material nonlinearities of both concrete and steel plate were taken into consideration. The results of nonlinear ultimate deformation analysis were found to be very close to the test results.
