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栓钉及荷载对简支组合梁滑移和挠度的影响分析

Analysis on the influence of studs and loads on slip and deflection of simply supported composite beams
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摘要 为研究不同荷载形式和栓钉布置对简支组合梁的滑移和挠度的影响,采用ANSYS软件,建立有限元模型,分析栓钉均匀布置的有限元模拟结果与解析公式计算结果的吻合程度,并研究不同栓钉布置及施加不同荷载对简支组合梁滑移和挠度的影响。研究结果表明:当剪力图面积大小相同且施加荷载为对称集中荷载时,组合梁的滑移和挠度最大,跨中为集中荷载时的滑移和挠度最小。在多数荷载工况下,为保证组合梁整体栓钉个数不变,采用分段布置栓钉可以大幅度减小组合梁的最大滑移和跨中挠度。在对称集中荷载作用下,组合梁所产生的滑移和挠度最大。组合梁的ANSYS有限元模型的模拟结果与解析公式计算结果相比,模拟结果的精度更高,该研究可为类似工程计算提供借鉴。 In order to study the effects of different load forms and stud arrangement on the slip and deflection of simply supported composite beams,the model was established using the ANSYS finite element software.When the studs are evenly arranged,the degree of agreement between the finite element simulation results and the analytical formula calculation results was analyzed.And the effects of different stud arrangements and different loads on the slip and deflection of simply supported composite beams were studied.The results of the study show that,when the area of the shear diagram is the same and the applied load is symmetrical concentrated load,the slip and deflection of the composite beam are the largest,and the slip and deflection are the smallest when the mid-span is concentrated load.Usually,in order to control the number of studs in the composite beam,the segmental arrangement of studs can greatly reduce the maximum slip and mid-span deflection of the composite beam.Under the action of symmetrical concentrated load,the slip and deflection of the composite beam are the largest.Compared with the calculation results of the analytical formula,the simulation results of the ANSYS finite element model of the composite beam have higher accuracy,which can provide reference for similar engineering calculations.
作者 雷启南 王鹏 南洪良 周东华 高永林 LEI Qinan;WANG Peng;NAN Hongliang;ZHOU Donghua;GAO Yonglin(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China;Faculty of Architecture and Urban Planning,Kunming University of Science and Technology,Kunming 650500,China)
出处 《交通科学与工程》 2023年第4期105-113,共9页 Journal of Transport Science and Engineering
基金 国家自然科学基金资助项目(51868032,51308269)。
关键词 界面滑移 挠度 组合梁内力 interface slip the deflection combined beam internal force
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