既有桥梁结构混凝土现存应力测量与分析

混凝土实际应力水平是反映混凝土结构受力状况的最重要的指标之一，从而也是反映混凝土结构功能可靠性的主要指标，因此利用应力释放的力学原理，检测了既有结构混凝土应力，结合桥梁梁薄壁结构的受力特点，以混凝土保护层为工作对象，检测混凝土桥梁的水存应力，属无损检测范畴，室内模型试验验证了该方法的正确性和可靠性，并获得温度影响规律，在安徽五河－淮河大桥实桥应用中获得理想结果。

Measurement and Analysis of Existing Stress in Concrete Bridge Structures

The existing stress in concrete structures is one of the most important parameters to represent the condition of the structure. Based on the principle of stress-leasing, a method to measure the existing stress in concrete structures is presented. The method belongs to the category of non-destruction-test because the only protection course of concrete is cut off. Model tests have confirmed the correctness and reliability of the method. In addition, the law of influence by temperature is also obtained. Finally an example to test a real bridge using this method is given.