西北干寒地区混凝土桥梁冻融病害机理及防治技术探究

Analysis on Freezing Thawing Fault Mechanism and Preventive Technology of Concrete Bridge in Northwest of Dry Cold Areas

在分析混凝土冻融的病害机理和干寒地区混凝土桥梁冻融病害的主要类型的基础上,运用有限元原理,建立了混凝土冻融受压数值模型、砂浆冻融模型和混凝土冻融受压数值模型,分析结果表明混凝土经过冻融后弹性模量有所减小。

On the basis of analyzing the fault mechanism of concrete freezing thawing, and the main type of concrete bridge freezing thawing fault in the dry cold area, the finite element principle is applied to establish the concrete freezing thawing compression numerical model and mortar freezing thawing model. The analysis result shows that the elastic modulus of concrete decreases after frozen and thawed.