武汉火车站复杂混凝土结构疲劳性及耐久性研究

Study on Fatigue Property and Durability of Complex Concrete Structure in Wuhan Railway Station

武汉火车站采用铁路桥梁和房屋建筑相结合的特殊结构体系。利用试验模型,对复杂箱形截面的预应力混凝土结构在使用环境中造成的耐久性损伤,以及高速列车振动引起的疲劳现象进行理论和试验研究。得出高速列车振动对混凝土结构疲劳性和耐久性的影响规律及控制方法,复杂箱形截面预应力混凝土梁的疲劳寿命曲线;获得抗冻、抗腐蚀、抗疲劳的高耐久性混凝土技术。

Special structural system of railway bridge and building composition are used in Wuhan Railway Station.By experimental model,durability damage induced in using environment of prestressed concrete with complex box section is studied,as well as fatigue phenomenon induced by vibrating of high-speed train.The influence law of vibrating of high-speed train on fatigue and durability of concrete is put forward,as well as its control methods and fatigue curves of prestressed concrete beam with complex box section.Moreover,high durability concrete technology with anti freezing,anti-corrosion and anti-fatigue performances is gained.