Development of General Method for Strengthening Design with Consideration of Life Cycle

为发展外粘法与堆焊法加固的统一设计方法，提出以下几点：基层混凝土与加固材料界面各种脱粘类型的预测模型;疲劳、湿度、冻融循环和界面粗糙度对界面粘结强度的影响;最佳加固材料性能和加固方法（5）在交通荷载作用下，通过叠加提高构件极限承载力的试验证据;（6）三维数值分析在模拟加固后构件承载力方面的适用性。在综合所有的结果之后，提出了混凝土结构加固的最新准则以及加固后的强度预测模型。

In order to develop the unified design method for strengthening by external bonding and overlaying, the followings are presented: Prediction models for various debonding types at interface between substrate concrete and reinforcing materials, Influences of fatigue, moisture, freeze thaw cycles and interface roughness on interface bond strengths, Optimum reinforcing material properties and reinforcing methods (dimension and location), Experimental evidence of enhancement of ultimate member strength by overlaying under traffic loads, and (5) Applicability of 3D numerical analysis to simulate member strength after strengthening. After compiling all the results, latest guidelines for strengthening of concrete structures as well as strength prediction models after strengthening are presented.