Ultimate Bearing Capacity Analysis Of Mono-Symmetric I-section Curved Beams In Plan

The mechanical characteristic of mono-symmetric I-section curved beams is morecomplex than other members, which relatively lack of analysis and design methods. Soits theory needs to be improved.In this paper, finite element procedure ANSYS and element shell181are used todiscuss the variations of deformations and ultimate bearing capacity ofmono-symmetric I-section curved beams when arc length and central angle change,and the investigations are put on the influence of the bearing capacity underdistributions of internal forces and yield zones on the mid-span section, which arecompared with bisymmetrical I-section curved beams in plan. At final the relationshipbetween the ultimate bearing capacity of mono-symmetric I-section curved beams inplan and asymmetric section constant βyis revealed by changing load forms, crosssection and dimension, arc length and central angle.Learn from the stability capacity formula of ECCS, considering the curvature, astability capacity formula is proposed based on the FEM results of nonlinearregression analyze which is suitable for the simply supported curved beams subjectedto a central concentrated load. Experimental results and other scholars’ designedformulas’ results and regression calculations are compared to verify the validity of theformula which estimates the ultimate bearing capacity.