钢箱法在RC梁加固中的应用研究

Application of Steel Box Process in RC Beam Reinforcement

该文以兰州市东岗立交桥为工程背景,依据影响桥梁承载力的主要因素及钢箱法加固的原理和优点,对该桥进行钢箱加固,通过粘钢加固和钢箱加固两种方案,对加固前后在理论数据上的对比与分析,论证了钢箱加固后该桥的承载力较粘钢加固后有很大的提高,证明了钢箱法加固桥梁的实际效用,并为以后同类桥型的加固提供了一定的参考。

Taking Lanzhou Donggang Interchange as the engineering background, the article introduces the main factors to affect the bridge carrying capacity and the reinforcement principle and advantage by the steel box process. The article compares and analyzes the theoretical data before and after reinforcement by the bonded steel plate reinforcement and steel box reinforcement for this bridge to demonstrate that the carrying capacity of this bridge after steel box reinforcement is greater enhanced than the bonded steel plate reinforcement, and to prove the practical effect of bridge by steel box reinforcement process, which provides some reference for the reinforcement of the similar bridges in future.