锈蚀钢筋混凝土无腹筋梁受剪承载力计算  

Shear bearing capacity of corroded reinforced concrete beams without web reinforcement

作　　者：左龙华[1] 傅衣铭[1] 刘腾喜[1] 

机构地区：[1]湖南大学工程力学系,湖南长沙410082

出　　处：《湖南理工学院学报（自然科学版）》2006年第1期53-58,共6页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：国家自然科学基金(10272042)

摘　　要：锈蚀钢筋混凝土梁因钢筋锈蚀而造成钢筋截面积减小,并且由于锈蚀产物的锈胀力作用而使得混凝土产生裂缝。考虑到锈蚀钢筋混凝土梁的受剪承载力不仅与纵向钢筋的截面削弱有关,而且与裂缝之间的摩擦力以及构件在受压区未开裂部分的受剪能力有关,从这三个方面出发,建立了分析无腹筋锈蚀钢筋混凝土梁的抗剪承载力的一般方法。Corrosion of reinforcing bar in reinforced concrete （RC） beams leads to a reduction of the cross-section of the reinforcing bar, and an appearance of the cracks because of the corroded expansion force produced by the corrosion products, The shear force of the corroded reinforced concrete beams is related to not only the reduction of longitudinal steel cross section, but also the friction along the crack faces and the shear capacity in the compression zone. On the basis of the three aspects, the generally analyzing method of shear strength for the corroded RC beams without web reinforcement is given.

关 键 词：钢筋锈蚀 承载力 开裂 无腹筋梁 

分 类 号：O345[理学—固体力学]