Improvement such as adding prestressed strands and reinforced bars is available to abate high stress concentration and avoid cracking of concrete.

• 可以采取在边箱上翼板内增设纵向预应力束、增设边箱斜腹板内纵向非预应力钢筋等技术措施来改善边箱斜腹板的受力情况，避免混凝土裂缝出现。