摘   要：根据实际工程构件中钢筋锈蚀的不均匀性，设计了14根钢筋混凝土梁，并进行了试验梁在两对称集中荷载作用下的抗剪性能试验。通过对不同特征试验梁的裂缝分布、破坏模式和极限承载力的对比分析，研究了一侧剪跨内不同长度局部区段内不同的锈蚀特征对梁受力性能和承载力的影响。结果表明，一侧剪跨局部区段无粘结梁、锈蚀梁的力学性能与正常梁有很大的区别：因局部区段内的完全无粘结，局部区段无粘结梁在无粘结一侧的剪跨区内无斜裂缝，梁可能发生粘结完好一侧的剪切破坏，也可能发生弯曲破坏。对局部区段锈蚀梁，虽然所有的试件均因剪跨内的锈蚀区段而破坏，但随着锈蚀区段长度的增长和其内钢筋锈蚀率的增加，梁呈现出较脆的破坏模式和较低的极限承载力。

Abstract: According to inhomogeneity of component steel corrosion in practical engineering, 14 RC beams are designed, and under the roles of symmetrical concentrated loading, shear properties tests of testing beams are conducted. Through crack distinctions, contrastive analysis of damage modes and limited capacity of different characteristic testing beams, the influences of different corrosion characteristic of the partial section with different lengths in one side shear span on beams mechanical properties and bearing capacity are researched. The results indicate that mechanical properties beteween unbonded or corroded beams of the partial section in one side shear span and normal beams have a lot of differences: because of completely unbonded in partial section, unbonded beams of the partial section in unbonded side shear span have no diagonal cracks, therefore, beams may happen shear damage in good bonded side or will happen bending damage. For the corroded beams in partial section, all samples are destroyed because of corrosion section in shear span, however, by the length of corrosion section increasing and steel corrosion rate inside increasing, fragile damage modes and low limited capacity of beams are presented.