The Strain-Stress State Analysis of a Prefab Building
An experience in the calculation of structures of a two-story industrial prefab building assembled from block-boxes is presented. The design of a building model in the computer systems is described. Peculiarities of the design model and load summary are presented. The special features of the design diagram include: accounting of joint operation of horizontal frames, misalignment of joint connections, and roofing deck operation. When collecting wind loads on the frame, special attention is paid to the definition of the natural vibration frequencies of the building as well as the contribution of the fluctuating component of the wind load. It is established that the fluctuation component makes a significant contribution to the total wind load. The main results of the building structures calculation of the prefab building are given. On the basis of performed calculations, elements and joint connections that do not meet the conditions of strength and stability have been identified. Methods for strengthening, which make it possible to bring the building to the workable state, are offered for these elements and units. In conclusion, the main directions of development and study of prefab buildings are formulated, they are the research and development of block-boxes joint connections and research in the operation of multi-storey modular buildings under the impact of dynamic loads.