Deformation Performance Analysis of a Truss Structure Based on the Deformation Decomposition Method

Trusses are among the basic components of large-span bridges and large-space structures. A method is proposed to conduct a comprehensive deformation analysis truss in terms rigid body displacements tension compression based on complete mathematical orthogonality mechanical equilibrium. The correctness verified by comparison with traditional strain analysis. Furthermore, relative decomposition mode shape analyse detail its displacement deformation. superiority modal mass participation coefficient animation from observation method. Additionally, plane structure realized under any load conditions superposition shapes. quantitative performance can also be conducted countable shapes, which do not involve conditions. Finally, number shapes that must considered differs when using maximum indicators.