Belly Open Hole Beam Beam Bending - Shear Capacity Of The Relevant Research And Application

Steel beams with web opening have a apply prospect in industrial and civil buildings because they have the adavantage of decreasing storey, self-gravity and energy consumption due to permitting the pipeline through the beam. In the current strength design method for steel beam with web opening, one based on solid-web steel beam used has great errors and Virenteel Mechanism method is still a similar elastic calculation, whose calculation process is not simple. Although accuracy of finite element analysis is good, it cost time and effort. Thus, non-linear FEA were done for limit load capacioty of steel beam circle web opening from macro point to analysis the moment-shear interaction of opening section and simplified design method for designers' convenience in project. This paper mainly is for the analysis of steel I beam with circle web opening and the main work and achievement are as follow:Firstly, analysis is done on current design and calculation way for steel beam with web opening and there are some problems in these methods. So it is important to put forward a simple design method for steel beam with web opening.Secondly, On the basis of domestic I-beam and the common hole diameter-section depth ratio, cantilever-simple steel I beam with one circle web opening is modeled in finite element analysis and different moment-shear combination is got through adjusting the force at the end of cantilever. Based on a lot of calculation, the application of existing formula for calculating pure flexure resistance capacity is verified and table of pure shear resistance capacity is given. Meanwhile, Moment-shear interaction curve is plotted and then equation is got from fitting result.Thirdly, series of nonlinear finite element analysis is carried on steel beam with circle web opening under distributed load to analysis the impact regulation of web opening position, hole diameter-section depth ratio and section size on load capacity. Furthermore, it is verified that the moment-shear interaction design equation is feasible for the simple design of steel I beam under distributed load.The analysis and conclusion from the paper is valuable for project design and further study on steel beam with web opening.