Abstract
For some electrostatic precipitators, profiled steel sheets are used as casing wall which is subjected to both bending and vertical compression. By nonlinear finite element method, the influences of structural parameters on load bearing capacity of profiled steel sheet wall were investigated. For the loading path, the uniform transversal pressure was applied firstly, and then the vertical compression was applied until the wall failed. The results indicate that the vertical compression resistance of profiled sheet decreases with the transversal load or the increasing sheet span. For certain sheet shape, the vertical compression resistance of profiled sheet decreases with the wall width increasing. The vertical resistance of the profiled sheet whose tensioned flanges are connected with the side columns is more than that whose compressed flanges are connected with the side columns. When the vertical compression resistance is calculated according to the buckling evaluation method of cold-form thin-walled steel member, the value is usually less than the solution from finite element method. Consequently, the load bearing capacity based on the related method of cold-form thin-walled steel member can be taken as a reference solution for the profiled steel sheet subjected to combined bending and vertical compression.
Highlights
The electrostatic precipitator is an important environmental protection equipment to eliminate dust
It can be considered that the profiled steel sheet wall which bears the combined loads of bending and vertical compression fails owing to the elastic-plastic local buckling
By the nonlinear finite element method, computing models are established according to geometric sizes of profiled steel sheet wall usually used in practical electrostatic precipitators, and investigations are conducted for determining the vertical compression bearing capacity of wall after a certain transversal load is applied
Summary
The electrostatic precipitator is an important environmental protection equipment to eliminate dust. When the profiled steel sheet is erected vertically, it is subjected to the pressure difference between the inside and outside of casing (called negative pressure) and wind load, and the vertical compression acting on the top beam. The design method for profiled steel sheet subjected to bending moment has been provided in the current relevant specifications [9]. There are very few research results referring to pure profiled steel sheet bearing both bending and compression, even lacking a specification for guiding the design. According to the general geometry and load conditions of casing wall in electrostatic precipitators, by the method of nonlinear finite element, the investigation has been conducted for observation of the influences of configuration and load factors on the bearing capacity of the profiled steel sheet subjected to both bending and compression
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
