Operational Safety of Skeleton Frame Built Structures with a Low-Rigidity Covering

3rd World Multidisciplinary Civil Engineering, Architecture, Urban Planning Symposium

土木建筑工程;文学

Tews, Rafal^1 ; Grzybowska, Agnieszka^1 ; Bajno, Dariusz^1

University of Science and Technology, Faculty of Civil and Environmental Engineering and Architecture, Department of Building Structures, Al. S. Kaliskiego 7, Bydgoszcz

85-769, Poland^1

关键词: Multi-slope;    Multi-spans;    Non-building structures;    Operational safety;    Roof shape;    Skeleton frames;    Snow loads;    Snow removal;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/471/5/052087/pdf
DOI  :  10.1088/1757-899X/471/5/052087

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The paper discusses issues related to the safety of light skeleton frame structures with a low-rigidity covering. Non-building structures of this kind have been broadly used as large-scale greenhouses. The most commonly used layout for these structures is the multi-span layout. The paper presents legal preconditions related to construction and operation of these structures; it particularly focuses on external climatic loads, i.e. snow and wind, affecting reliability of these structures due to their uneven distribution on multi-slope roofs. One of the problems associated with the use of plastic covering is the accumulation of snow in multi-slope roof valleys. Designers sometimes happen to transfer this problem to the user of the structure by allowing obligatory snow removal in their calculations and thereby leading to situations where the snow load of the main structural frame is underestimated. The paper presents examples of structures in case of which, as a consequence of underestimating the snow load, failures can occur. In addition, a method of determining wind loads for roof shapes not provided for in standards was noted. The summary contains final conclusions regarding construction and operation of foil tunnels in Polish conditions of operation.