摘要
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.
作者
冯国祥
蒋勤俭
吴焕娟
FENG Guoxiang;JIANG Qinjian;WU Huanjuan(Beijing Precast/Prestressed Concrete Institute,Beijing 100070,China)
出处
《混凝土》
CAS
北大核心
2018年第10期127-131,共5页
Concrete
基金
国家重点研发计划(2016YFC0701700)
关键词
大跨度预制梁
吊装附加弯矩
预埋吊件
large-span precast beam
hoisting additional bending moment
embedded hanger