基于虚拟裂缝模型的钢筋混凝土最大锈胀力模型  

Fictitious crack model for protective maximum expansion force of reinforced concrete structure due to rebar corrosion

作　　者：卢鹏程[1] 

机构地区：[1]丽水学院建筑工程学院,浙江丽水323000

出　　处：《混凝土》2010年第5期25-26,28,共3页Concrete

摘　　要：应用虚拟裂缝模型分析了混凝土保护层锈胀开裂的锈胀力。首先,考虑了混凝土和钢筋的实际变形情况利用断裂力学和弹性力学得到了混凝土保护层开裂时钢筋的最大膨胀力理论预测模型。然后通过与文献中的试验数据比较,验证了本研究数值方法的有效性。The model for calculating the cracking of protective layer in reinforced concrete structure due to rebar corrosion was established based on the fictitious crack model.First,according to the cracking phenomenon observed in experiment,the maximum expansion force of corrosion were predicted by a model established base on fracture mechanics and mechanics of elasticity.The comparison of calculation result with experimental data demonstrates that the proposed model is feasible for predicting the expansion cracking of concrete protective layer due to corrosion of rebar.

关 键 词：混凝土 虚拟裂缝模型 锈蚀 最大锈胀力 

分 类 号：TU528.01[建筑科学—建筑技术科学]