为钢筋混凝土边梁和挑檐梁设计抗扭配筋，含阈值验算和剪扭组合箍筋
Spandrel Beam
Edge beam with significant torsion
Edge Beam
Moderate torsion from slab eccentricity
Low Torsion
Torsion likely below threshold
使用乘系数值 (如 1.2D + 1.6L)。Tu 为临界截面处乘系数扭矩。