The New Technology Research Of Highway Simply Supported T Beam Reinforcement

Back in the 1950s and 1960s, China built many T-beam bridge, as simple structure, ease of installation, and other characteristics, the type of the bridge to improve road traffic in China has played an important role. However, as the development of transport, traffic volume increasing, the increasing load of vehicles, as well as the increase in life as carriers, T-beam also exposed some problems, because WING PLATES high beam thickness is much smaller than that if Articulated consider horizontal beam connection, as WING PLATES connecting the structure of the beam height and high much difference, the role hinged be very difficult to achieve and does not provide adequate lateral links, resulting in damage to the connecting WING PLATES; by has just consider the horizontal beam connected, and if the number of beams not installed, do not form a horizontal rigid connection, the actual state of the theory inconsistent with the will of a single beam by too much damage, when their resistance is weak beam , but also bear more vulnerable because of the lateral bending of the role of damage to a bridge carrying capacity reduced with each passing year. Especially before the construction of the bridge, lower design standards, the development of transport capacity has been unable to meet the needs and reinforced concrete T-beam bridge with the use of the growth period, and the conservation of not timely, there will be natural carbonation of concrete surface, Cracks up, the surface broken, rainwater intrusion, a series of issues such as steel corrosion, the bridge will eventually lead to decreased capacity, a disease, a disease Bridge, Bridge, or even serious bridge collapsed, to a certain extent, this has hampered the national economy development.Author in the detailed analysis of the reinforced concrete T-beam bridge defects and causes on the basis of the adoption and strengthening methods of the past, the use of box beam bending and torsional rigidity greatly superior to the T-shaped beam technology theory, From the reduction in cross-section of the bridge is bending and deflection from the value, to improve the multi-span simply supported beam of power characteristics, improve the tolerance of the bridge set, and proposed multi-span simply supported girder bridge into a semi-continuous multi-span beam reinforcement methods, General and the two methods applied to the simply supported girder bridge reinforcement.Text of several commonly used methods of calculating reinforcement comparison, as well as construction, economic and other considerations, to draw the two methods of reinforcement at the advantages and feasibility of practical use; paper focuses on two basic principles of reinforcement method and calculation Ways, the reinforcement design and construction requirements and pay attention to the specific matters, simulation analysis. And through examples of the application of reinforcement and load tests, further evidence of two types of reinforcement methods on the transformation of reinforced concrete T-girder bridge is feasible, can effectively improve the carrying capacity.