大跨度预制梁吊装应力分析及预埋吊件选用方法研究

Hoisting stress analysis of large-span precast beam and study on selection method of embedded hanger

针对大跨度预制梁跨度、截面、自重较大的特点,分析了吊点附加弯矩对预制梁吊装应力的影响,提出了考虑吊装附加应力的必要性以及合理吊点位置的确定方法;经过理论分析给出了大跨度预制梁预埋吊件安全选用的计算方法,可为相关的工程实践提供参考。

According to the characteristics of span,section and self weight of large-span precast beam,the influence of additional bending moment on the hoisting stress of precast beam is analyzed.The necessity of additional stress of hoisting and the method of determining reasonable lifting point position are put forward.Through theoretical analysis,the calculation method of safety selection of large-span precast beam embedded hanger is given,which can be referenced for relevant engineering practice.