化冰盐对钢筋混凝土梁承载力影响的研究

EXPERIMENTAL STUDY ON DETERIORATION OF LOAD BEARING CAPACITY OF REINFORCED CONCRETE BRIDGE DUE TO DEICING SALT

采用锈蚀和冻融两种环境的叠加来模拟化冰盐环境,通过对相同锈蚀条件下冻融梁和非冻融梁的对比试验,研究化冰盐环境下钢筋混凝土梁剩余承载力的退化。结果表明,模拟的化冰盐环境下,经受冻融循环的试验梁比非冻融循环试验梁承载力下降了13.6%,化冰盐环境下的冻融破坏对钢筋混凝土结构物的性能退化影响不容忽视。

Using the superposition of the corrosion and freeze-thaw cycles environment to simulate the deicing salt environment, based on testing of freeze-thaw cycles beams and comparison with nonfreeze-thaw cycles beams in the same corrosion conditions, the degradation of residual loading capacity of reinforced concrete in deicing salt environment was studied. The results show that in the deicing salt environment, compared with non-freeze-thaw cycles beams , the residual loading capacity of freeze-thaw cycles beams declined by 13.6 percent, and the damage of freeze-thaw cycles to deteriorate reinforced structure function can not be ignored in deicing salt environment.