It discussed the mechanism and the cause of empty core plate beam crackings and analysed with definite element modus, meanwhile proposed the control measures about it.

• 论述先张法气囊内模制作的空心板梁裂缝产生的机理及成因,并用有限元方法对温度应力作重点分析。根据观察、析和计算提出控制及补救措施,取得良好效果。