Study Of Modle Calculate And Dynamic Properties Of Arch Corrugated Steel Roof

Metal Corrugated Arch Roof (MCAR) is a kind of new type space structure. It has powerful competitive capacity and huge application market in China for all of its advantages, such as strong spanning ability, light dead weight, rapid construction speed, beautiful configuration etc. Nevertheless, for some reasons, its research work lags behind its engineering practice seriously, affecting its further application and dissemination. Many engineering accidents also indicate that it brooks no delay to carry out theoretical and experimental research systematically and thoroughly on this kind of structure. The work of this paper is just developed under this background. In accordance with the problems existing in the present research, taking Milky Way MCAR as the object of study, some creative work has been as follow:1. A systematic introduction was given about the shaping method, characteristics and developing history of MCAR. The present experimental and theoretical researches situations and the preliminary conclusions were summarized.2. Several kind of simplified calculating models are introduced. The web and flange plates in MCAR with a large number of corrugations were equivalent to orthotropic curve plates. The equivalent elastic modulus was yielded by tensile tests, which provides the material constants data for the structural static and dynamic analysis.3. The tensile and bending rigidities of the web and flange plates with a large number of corrugations were obtained by the tensile and bending tests. The experimental results were compared with those of flat plate with the same thickness. Some important conclusions were given.4. The dynamic properties of 18m-span Milky Way MCAR were measured and the frequencies and damping ratios of vertical free vibration were obtained.5.On the basis of the simplified calculating model this paper studied, the static and dynamic models analysis of Milky Way MCAR were performed by using FEM program SAP93. The calculating results were compared with the experimental data and they are close.