VERIFICATION METHOD FOR TORSIONAL STRENGTH OF BOX-SECTION ARC BEAMS
Arc beams are widely used in practical engineering;however,their complex stress conditions make the verification of torsional strength challenging.Current standards and design manuals in China do not provide methods for calculating the torsional strength of arc beams,and existing calculation methods are often too complex for practi-cal application.This paper explores the torsional shear stress of commonly used box-section arc beams and investi-gates the torque distribution and maximum torque for arc beams with small central angles under two typical bound-ary conditions.Simple calculation formulas are proposed.The findings of this study can serve as a basis and refer-ence for practical engineering applications.
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