Active Bridge Section Consolidation Method Increases

Increasing section consolidation method of active bridge reinforcement is one of many a commonly used and effective reinforcement method, compared with other reinforcement method, high construction is convenient and easy to ensure the construction quality characteristics, in recent years, has gradually recognized and applied in active service in the bridge maintenance and reinforcement.In this paper, expounded the consolidation method increases section basic concept, principle, and with other consolidation method has different characteristics and suitable conditions, especially to attention in the design and construction method of the structure inherent requirements, notice new old concrete effective combination between, summarizes the key points of construction method, i.e. Strengthening the unloading treatment before surface treatment, connections, a new concrete layer construction, and enumerated jet concrete pouring and concrete grouting material of two kinds of construction craft.By increase of flexural members section, combined with the consolidation method about standard, principle, mechanical knowledge obtained, summarizes the tensile crack and compression area rectangular cross-section and t-shaped section bearing capacity of normal section of the calculation principle and formula and shear capacity for inclined section of the calculation formula. Preliminary discussion and gives subjected to bending deformation stiffness calculation principle and formula and combining the causes of crack width, and gives the calculation formula of crack width.Simply narrated the ANSYS to strengthening the bridge, and the method of hollow slab and T beam Simulation analysis, finite element Simulation won increase gusset plates and beam section graph, deflection displacement load contrast diagram and crack propagation contrast diagram, and discussed the influence of the calculation results.Finally, the paper summarizes the research work, and gives suggestions and points out the deficiency and this needs to be research aspects of next.