It is illustrated that of the two factors, the ductility and the ultimate deformation, which both contribute to the improvement of the flange width and unbonded length, the former is more effective.

• 分析结果表明：翼缘宽度对提高梁的延性和极限变形的有效性要大于预应力筋无粘结长度对提高梁的延性和极限变形的有效性。