既有刚架混凝土拱桥的安全性评估与加固措施研究

针对目前正在运营的刚架混凝土拱桥出现的主要病害,首先利用基于层次分析及专家评估的变权综合系数法对一实际病害桥梁结构进行了评估,然后根据评估结果对该桥的维修加固措施进行了研究;采用有限元方法对桥梁加固后的内力和变形进行了计算,并根据计算结果对该桥的加固效果进行了评估分析.结果表明:利用综合系数法能够较好地得到既有刚架混凝土拱桥的评估结果,同时本文的维修加固措施对今后同类型桥梁结构的维修加固也具有一定的借鉴意义.

Safe Evaluation and Reinforcement Measure of Rigid Frame Bridge

Because operating rigid frame bridges have chief diseases at present.A diseasing bridge is evaluated by using analytic hierarchy process and expert evaluation combined factor method at first,then the reinforcement measure is studied based on evaluation consequence,the calculation of internal force and deformation are carried out by the finite element method,and the evaluation analysis of reinforcement effect is done by calculation result.The conclusion indicates that the combined factor method can get the result of the operating rigid frame bridges.The reinforcement measure is probed for the same type bridge at the same time.