| Space truss structure has unique advantages, it can satisfies the requirements ofvarious of architectural forms. Now it widely used in a variety of large span structure.The paper will analysis the mechanical properties and characteristics of theswallow-like space truss on the base of Dongli gymnasium in Tianjin by two finiteelement software of MIDAS GEN and ANSY. In this paper, it researches the effectof mechanical properties of the swallow-like space truss with the condition of thesupport changing.Firstly, this paper describes the system composition and characteristics of theswallow-like space truss structure. It studies the static performance, the effect of staticcapacity when the load changes or the finite element model changes. The analysisshows that the structure has good static mechanical performance, the overall structureperformance works well and the structure in the place with different structuralstiffness has larger stress.Secondly, it studies the static stability of the swallow-like space truss structureand studies the influence of the structure static stability according to the condition ofbrace in this paper. It concludes that the structure has good overall stability, andappropriate brace between the trusses can significantly improve the stability of thestructure. Then the analysis of dynamic performance of the structure including thenatural vibration properties and the seismic response is carried out, it concludes thatthe structural stiffness distribution is well, and the structure has good seismicperformance.Finally, according to comparing different kinds of bearing, the paper researchesthe behavior of static performance, static stability performance and the dynamicperformance of the swallow-like space truss structure. It shows that using differentbearings, the swallow-like space truss structure has different mechanical properties,and the swallow-like space truss structure has best mechanical properties when usingspring support. |
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