基于混凝土断裂的钢筋锈胀力预测模型  

Corresion Expansion Force Predicting Model of the Steel based on Concrete Fracture

作　　者：马光述[1] 王显利[1] 马德宝[1] 

机构地区：[1]北华大学,吉林吉林132013

出　　处：《水力发电》2008年第12期45-47,共3页Water Power

基　　金：吉林省教育厅‘十一五'规划项目(2007124);吉林省科技发展计划资助项目(20080152)

摘　　要：保护层锈胀开裂是钢筋混凝土结构耐久性极限的一个重要标志,将弹性力学和线弹性断裂力学方法相结合,建立了钢筋均匀锈胀力的预测模型;与其他预测方法的比较证明了该模型的有效性。结合经验公式,建立了锈胀开裂时钢筋锈蚀量预测模型,对实验数据的分析证明该模型预测准确。The cracking of concrete cover under corrosion expansion force is an important symbol for the durability limit of reinforced concrete structure. The predicting model of corrosion expansion force of reinforcing bar was set up based on combining elasticity with linear elastic-fracture mechanics. Compared with other predicting methods, the effectiveness of such model was proved. This paper also sets up a predicting model of steel bar corrosion rate when the concrete cover cracks due to corrosion expansion force, in combination with empirical formula. The analysis of test data showed that this model is accurate.

关 键 词：钢筋混凝土 耐久性 锈胀力 预测模型 

分 类 号：TU375.5[建筑科学—结构工程]