Load Behaviors Research For Strarch Working Stage

STRARCH is a new space structural system. Compared with the traditionalspace structural, STRARCH will be assembled at ground level, followed by apost-tensioning process to lift the structure into its final arch configuration, theassembly can be finished wholly at ground level. it has many advantages such as longspan, simple composition, convenient construction and inexpensive cost and will havethe important advantage in the future application. STRARCH can be used forgymnasium, shopping mall, and large storage, especially for hanger. This paper studies shape forming stage and working stage of STRARCH, thoughnonlinear finite element analysis. The key part of the paper is the study for loadbehaviors at working stage. The aim of analyzing shape forming stage is for solvingthe question of applying the member forces produced in the shape forming process tothe finite element models of load analysis, by a whole and continuous analysis method.first, analyzing and comparing load behaviors under different load; on the basis ofload behaviors, analyzing the development of plastic and find the most disadvantageposition at each stage; analyzing the influencing that the member forces produced inthe shape forming process and the disabled bottom chords to load behaviors atworking stage and lots of useful conclusions are drawn; according to some example,studying some significant factors that have influence on the working stage of theSTRARCH; last, analyzing vibration characteristic. The research results of this paper have certain directive significance on furthertheory and experiment, and have established the foundation for mastering theprinciple of structure in an all-round way.