Analysis Of Structural Performance And Construction Simulation Of Rigid Frame Recticulated Shell Structure

Being a typical kind of spatial structure, reticulated shell is specified by its intrinsic mechanical properties. With the development of this structure in style day by day, it is very important to study its mechanical properties. In this dissertation, a kind of rigid frame reticulated shell was studied and the primary contents are as follows:After reviewing the development and theoretic actuality of reticulated shell structures, the dissertation firstly described the background of project, structural system, establishment of model, load cases and the combination, then made a nonlinear calculation for the rigid and hinged restriction of the column footing separately by ANSYS. In addition, the force conditions on two different restriction styles were analyzed and compared. The results indicate the internal force and displacement of the structure can meet the requirements of criterion well, and the rigid restriction is more appropriate than the hinged.Secondly, the vibration characters of the rigid frame reticulated shell were analyzed by subspace iteration method. The analytical results show that the frequencies are quite dense and the vertical stiffness is weak. Besides, by time-history method, the dissertation studied the dynamic response of the structure subjected to unidirectional, bidirectional and three-dimensional earthquake waves respectively. The results indicate the rigid frame reticulated shell structure meets the antiseismic requirements, the response of multidimensional earthquake is stronger than unidirectional earthquake, and the horizontal is stronger than vertical.And then, by using the birth and death elements technique in ANSYS, the dissertation simulated the construction process of the rigid frame. The part of double reticulated shell is constructed by integral jacking method and its construction process was analyzed by three different schemes from jacking to installation. The results indicate that the internal force and the deflection of the rigid frame and reticulated shell both meet the requirements of criterion during the whole construction process.Finally, the dissertation summarized the study to obtain some valuable reference conclusions and pointed out the problems which should be further studied.