海水侵蚀下钢筋混凝土梁斜截面承载力试验研究

港口、码头、混凝土近海平台等海工结构物长期暴露在恶劣的环境中。外部腐蚀介质的影响会降低其安全性、耐久性和可靠性。尤其海水浪溅区的钢筋混凝土结构物受海水腐蚀更易遭受破坏 ,造成的损失也非常巨大。结构的安全性、耐久性和可靠性日益成为人们研究的重要课题。本文通过 15根钢筋混凝土试验梁在多循环人工海水侵蚀后进行的斜截面承载力试验 ,研究了钢筋混凝土梁在遭受腐蚀的不同时间段内梁的斜截面承载力的变化情况。提出了不同干湿循环条件下几种不同配比的钢筋混凝土梁的力学性能变化规律。

SHEARING EXPERIMENT REARCH OF BEARING CAPACITY TO REINFORCED CONCRETE BEAMS CORRODED IN SEAWATER

The engineerings such as inshore concrete terrace,construction in harbour or pier are thoroughly exposed longtime in inclement climate.They would be reduced their safety,durability and reliability because of corrosion by the corrosive medium.The reinforced concrete structure,especially splashed by waves of sea,corroded by sea water,suffer damage even more easily and the loss is vast.Now the safety,durability and reliability of structure have been become increasingly an important subject on reseach.In this paper,with shearing experiment of 15 reinforced concrete beams,the bearing capacity changes of these beams corroded more times in seawater in different periods of time were studied.The changing regularity of mechanics property was summed up to these reinforced concrete beams immersed and dried in laboratory in different strengthen.