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混凝土结构改造工程中经常采用钢结构形式,新增钢梁与原混凝土结构的连接节点十分常见。新增钢梁与原混凝土结构连接节点的性能影响到新增结构与原混凝土结构之间的整体工作情况和新增构件的受力状态。对新增钢梁与混凝土构件之间常用的连接节点通过有限元计算,对其受力性能进行比较详尽的分析,包括连接节点的刚度、锚固钢板的变形、接触应力、植筋的受力等,并提出了工程应用建议,对该类工程应用具有重要的参考价值。
The steel structure is often used in the reconstruction of concrete structures, and the joints between the new steel beams and the original concrete structures are very common. The performance of the joint between the new steel beam and the original concrete structure affects the overall working condition between the newly added structure and the original concrete structure and the force status of the newly added components. The finite element calculation of commonly used connection points between newly-increased steel girders and concrete components provides a detailed analysis of their mechanical properties, including the stiffness of connecting nodes, deformation of anchor steel plates, contact stress, stress on anchorage bars, etc. , And put forward engineering application suggestions, which has important reference value for the application of this type of engineering.