Synopsis
Load Path Analysis (LPA) has been used to interpret the load flow inside various types of structures. In this paper, LPA is employed together with the application of the Finite Element Method (FEM) to gain insight into the load flow inside a complex concrete structure under demanding storm loads. First, the floating concrete structure, subjected to various external loads that arise during storms, is modelled using nonlinear FEM. Then the internal forces and reaction forces are extracted from the FEM analysis results. With the assistance of LPA, the load flow from the front side of the structure (facing the storm) to the protected rear side, is clearly identified. The load flow pattern is shown to be closely related to the configuration of the shear walls, horizontal diaphragms and supports. The stiff er members with direct supports attract a majority of the applied loads, whereas less stiff members without direct supports tend to transfer the loads to the adjacent members. The study clearly demonstrates the ability of the combined LPA and FEM approach to resolve complex structural engineering problems.