A Study On The Section Changing Is Applied In Strengthening T Beam Bridge

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, has been in Some of the reinforced concrete structure of the calculation method and the Steel Plate law proposed on the basis of section T conversion to me a reinforced concrete T-beam bridge of the new method.Use the traditional paste steel plate reinforced the basic methods of Old Bridge, the T-beam into the box girder sections form at the same time improve the flexural strength, and improve the overall performance of the entire bridge to reinforcement of reinforced concrete T-beam bridge Objective.Through paste plate, a steel box girder mixed portfolio to achieve T to me; text conversion section focuses on the basic principles of mixed composition of steel box beam method of calculation to convert sections of the specific design and construction requirements and attention, modeling analyses. And through reinforcement applications and examples of load tests, further evidence of the conversion of strengthening cross-section of reinforced concrete T-beam bridge is feasible and effective to improve the bearing capacity...