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为了研究钢板-混凝土组合加固技术在桥梁加固工程中的应用,本文提出了钢板-混凝土组合加固预应力空心板桥的加固机理及空间有限元数值模拟方法,采用ANSYS大型通用软件,选用合理的数值模拟参数,对采用钢板-混凝土组合加固的某火灾受损预应力混凝土空心板桥进行了非线性有限元数值模拟,对桥梁加固效果进行荷载试验验证,试验结果表明加固效果良好,结构的承载力分别提高了25.4%和20%,挠度校验系数降低了6.6%~20.0%。本文为同类桥型的加固提供了参考。
In order to study the application of the steel-concrete composite reinforcement technology in the bridge reinforcement project, this paper presents a steel-concrete composite reinforcement prestressed hollow slab bridge reinforcement mechanism and the finite element numerical simulation method, the use of ANSYS large common software, the selection of reasonable values The simulation parameters are used to simulate the damage of a pre-stressed concrete hollow slab bridge reinforced with steel-concrete composite by nonlinear finite element method. The results show that the reinforcement effect is good and the bearing capacity of the structure Increased by 25.4% and 20% respectively, and the deflection calibration coefficient decreased by 6.6% -20.0%. This article provides a reference for the reinforcement of similar bridge type.