混凝土耐久性破坏经时模型

The model of concrete durability failing with time

本文在分析传统混凝土模型的基础上 ,提出了一种混凝土耐久性破坏经时模型 (CDFTModel)。该模型按混凝土结构受环境作用的损伤程度定义了一个破坏度函数 ,并根据破坏度函数把混凝土的服役周期划分为三个功能服务阶段 :环境相容期(TC)、环境作用期 (TD)、破坏加速期 (TA) ,模型认为混凝土工程的安全服役年限TS 为环境相容期与环境作用期之和。

At the base of scientific analysis on traditional concrete model,the paper proposes the model of concrete durability failing with time.The model definites the concrete damage functing (C,X,t) and explains its physical meaning and divides the serving life into three function phases:the compatible Time,the damaging Time and the accelerated damaging Time.The connections between three different environment functions and concrete base structure and its shown method.The CDFT Model proposes the safe serving life is the sum of the compatible Time and the damaging Time.