期刊论文

Shear failure behavior of corroded reinforced concrete beams in diagonal section

中文

长安大学学报(自然科学版)

1671-8879

2019

39

1

90-98

10.19721/j.cnki.1671-8879.2019.01.011

2015CB057705:国家重点基础研究发展计划（973计划） 51508036:国家自然科学基金 51478050:国家自然科学基金 2017JJ3325:湖南省自然科学基金 17B012:湖南省教育厅科学研究项目

本校为第一机构

为了研究锈蚀对钢筋混凝土构件抗剪性能的影响,设计并制作了7根配有箍筋和斜筋的钢筋混凝土矩形梁,其中1根为未锈蚀的对比梁,采用电化学快速锈蚀方法对其余6根钢筋混凝土梁进行加速锈蚀试验。开展相同剪跨比下钢筋混凝土梁的斜截面抗剪性能试验,讨论钢筋混凝土梁表面初始锈胀裂缝的分布特征,分析箍筋锈蚀、斜筋锈蚀和主筋锈蚀对钢筋混凝土梁斜裂缝的形成与发展、荷载-挠度曲线、剪压区混凝土压力传递过程以及钢筋的内力变化情况,研究不同锈蚀程度钢筋混凝土梁斜截面极限承载能力与失效特征。研究结果表明:弯剪斜裂缝的数量随着钢筋锈蚀水平的增长逐渐减少,斜裂缝的延伸长度变短,主拱传递压应力路...

To investigate the influence of corrosion on the shear behavior of reinforced concrete bridge members, seven rectangular reinforced concrete beams with diagonal bars and stirrups were designed and manufactured, one of which was a non-corroded contrast beam. An accelerated corrosion test was performed for the other six beams by electrochemical rapid corrosion method. The shear behavior tests of reinforced concrete beams in the diagonal section were carried out under an equivalent shear-span ratio. The distribution characteristics of initial corr...