A large scale space truss for constructing an artificial ground above facilities, for example, a railroad track, a large river, existing buildings and so on, is required to have the capacity for supporting the heavy vertical load and also resisting the lateral load. In this paper, the mechanical behavior of the rigid joint space truss, which was developed to satisfy the required capacity, was experimentally investigated under vertical and lateral loading conditions. It is concluded that the space truss shows stable deformation behavior due to the re-allocation of stress and thus, that it possesses sufficient ultimate strength and plastic deformation capacity.
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