预应力混凝土空心板桥梁加固方法研究

Research on Reinforcement Methods for Prestressed Concrete Hollow Slab Bridge Beams

为解决预应力混凝土空心板桥梁应用环节存在的结构承载力下降、桥体老化严重问题,规避由此引发的桥梁受损、桥面裂缝困境,保证桥梁运行质量,对预应力混凝土空心板桥梁加固方法展开研究,以案例解剖的方式,基于三维有限元模型分析桥梁病害的具体形式和产生原因。在此基础上初步制定技术方案,并结合数值计算结果、经济性、可行性分析结果确定最终方案,梳理方案技术流程、评估方案应用效果,以提高预应力混凝土空心板桥梁建设质量。

In order to solve the problems of decreased structural bearing capacity and severe aging of the bridge body in the application process of prestressed concrete hollow slab bridges,avoid the problems of bridge damage and deck cracks caused by this,and ensure the quality of bridge operation,research is conducted on the reinforcement methods of prestressed concrete hollow slab bridges.Through case analysis,the specific forms and causes of bridge diseases are analyzed based on a three-dimensional finite element model.On this basis,a preliminary technical plan is formulated,and the final plan is determined by combining numerical calculation results,economic feasibility analysis results,sorting out the technical process of the plan,evaluating the application effect of the plan,in order to improve the construction quality of prestressed concrete hollow slab bridge beams.