1.The shell is divided into orthogonal or oblique crossing girder systems, which make up a space rigid frame structure, then an analysis is made of the endogen force of the shell structure based on the curved lever space rigid frame structure.
2.The method of curved lever space rigid frame, a new and practicable numerical method, is based on the utility of reinforced concrete shell structure in practical project and on endogen force analysis of shell structure as this paper extracts.
