Destroying Analysis and Reinforcement Research on Space Truss Structure after Snowstorms

The paper aims to present the mechanical properties of steel truss structure and its failure mechanism,and propose strengthening project to ensure that it will not collapse largely under overloaded snow.The paper analyzes a space truss structure engineering in Liaoning with finite element software MSTCAD to discuss the causes of its being devastated in the snowstorms,and proposes reinforcement and reconstruction methods.Choosing the most common four conditions in snow load combination,there are about 534 over stress and 428 over slenderness ratio in the overload circumstances after the examination.But after reinforcement and reconstruction,there is neither of them under the same condition.Finite element software MSTCAD has good analysis of mechanical properties in space truss structure.The two reinforcement methods can reduce the difficulty in construction and shorten the construction period.