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孙 彬 牛荻涛 王庆霖 (西安建筑科技大学 710055)
[提要] 在阐述锈蚀混凝土梁结构性能的基础上,分析了影响锈蚀梁刚度退化的众多因素,结合试验数据,提出了锈蚀梁抗弯刚度的计算方法,建立了由于锈蚀使粘结力下降导致刚度退化的模型,可为混凝土结构耐久性评估提供科学依据。
[关键词] 锈蚀钢筋混凝土梁 抗弯刚度 粘结力退化 刚度退化On the basis of describing structural properties of the corroded reinforced concrete beam, all factors which influence the deterioration of flexural rigidity of the corroded beam are analyzed. According to the test results, the model of the deterioration of rigidity caused by the decrease of bond strength is built and the a method of calculating flexural rigidity of corroded beam is given.A scientific basis is offered for the assessment of durability of RC structures.
Keywords: corroded reinforced concrete beam; flexural rigidity; deterioration; bond strength; rigidity参 考 文 献
1.惠云玲等.混凝土受弯构件腐蚀前后构件性能试验研究报告.冶金建筑研究.1995.
2.陶 峰,王林科,王庆霖等.服役钢筋混凝土构件承载力的试验研究.工业建筑,1996,26(4).
3.王庆霖,池永亮,牛荻涛.锈后无粘结钢筋混凝土梁的模拟试验与分析.建筑结构,2001,31( 4).
4.金伟良,赵羽习.锈蚀钢筋混凝土梁抗弯强度的试验研究.工业建筑,2001,31(5).
5.牛荻涛,翟彬,王林科等.锈蚀钢筋混凝土梁的承载力分析.建筑结构,1999,(8).
6.袁迎曙,贾福萍,蔡 跃.锈蚀钢筋混凝土梁的结构性能退化模型.土木工程学报,2001,34(3).
7.任宝双,钱稼茹,聂建国.在用钢筋混凝土简支桥面粱受弯刚度估算.工业建筑,2001,31(1).
8.BaIlim Y, Reid JC, Kemp AR. Deflection of RC beams under simultaneous load and steel corrosion. Magazine of Concrete Research,2001,53(3).
9.Al-Sulaimani GJ, Kaleemullah M, Basunbul IA, et al. Influence of corrosion and cracking on bond behavior and strength of reinforced concrete members. ACI Structural Journal, 1990, 87(2).
10.朱伯龙,肖建庄.碳化混凝土的结构性能.工业建筑,1998,28(9).
11.赵羽习,金伟良.锈蚀钢筋与混凝土粘结性能的试验研究.浙江大学学报,2002,36(4).
12.Coronelli Dario. Corrosion cracking and bond strength modeling for corroded bars ln reinforced concrete. ACI Structural Journal,2002, 99(3).