Corbels support the crossbeams of half-through arch bridges. They are prone to cracking easily due to their characteristics and complicated loading conditions. Based on a practical diagnosis of a bridge crossbeam, we ...Corbels support the crossbeams of half-through arch bridges. They are prone to cracking easily due to their characteristics and complicated loading conditions. Based on a practical diagnosis of a bridge crossbeam, we bonded steel plates onto bridge corbels to strengthen them. We carried out a numerical analysis on the effectiveness of the reinforcement by using the commercial sof^are ANSYS. The numerical analysis shows that the stresses near the section break increased slightly, but the variation amplitude was small and all the stresses were within an allowable range. The loading test indicates that it is feasible to strengthen the corbel with vertical bonded steel plates. Therefore, the reinforcement is effective and economical. This reinforcement method is suitable for this type of corbel and can be applied in similar cases.展开更多
With the development of social economy,environmental problems have become prominent,and sustainable development has emerged as an important model.In the deep foundation pit projects of subway construction,steel suppor...With the development of social economy,environmental problems have become prominent,and sustainable development has emerged as an important model.In the deep foundation pit projects of subway construction,steel supports are widely used.However,traditional corbel brackets have many disadvantages.This article is based on the Urumqi South Railway Station project and conducts an optimized design of the corbel bracket structure,adopting a square steel hanging plate,steel hooks,and a steel plate bottom bracket structure.Through research,the optimized design has significant advantages.It saves 174,000 yuan for the project,increases construction efficiency by 70%,and effectively reduces the risks of working at heights.It eliminates the welding process,is adjustable in position,and is convenient for construction.From the perspective of sustainable development,this design reduces steel consumption,can be reused,reduces resource input costs,reduces construction noise and dust pollution,realizes resource recycling,reduces maintenance costs,and enhances structural durability.It meets the requirements of economic,social,and environmental sustainable development and provides a useful reference for subway tunnel construction.展开更多
文摘Corbels support the crossbeams of half-through arch bridges. They are prone to cracking easily due to their characteristics and complicated loading conditions. Based on a practical diagnosis of a bridge crossbeam, we bonded steel plates onto bridge corbels to strengthen them. We carried out a numerical analysis on the effectiveness of the reinforcement by using the commercial sof^are ANSYS. The numerical analysis shows that the stresses near the section break increased slightly, but the variation amplitude was small and all the stresses were within an allowable range. The loading test indicates that it is feasible to strengthen the corbel with vertical bonded steel plates. Therefore, the reinforcement is effective and economical. This reinforcement method is suitable for this type of corbel and can be applied in similar cases.
文摘With the development of social economy,environmental problems have become prominent,and sustainable development has emerged as an important model.In the deep foundation pit projects of subway construction,steel supports are widely used.However,traditional corbel brackets have many disadvantages.This article is based on the Urumqi South Railway Station project and conducts an optimized design of the corbel bracket structure,adopting a square steel hanging plate,steel hooks,and a steel plate bottom bracket structure.Through research,the optimized design has significant advantages.It saves 174,000 yuan for the project,increases construction efficiency by 70%,and effectively reduces the risks of working at heights.It eliminates the welding process,is adjustable in position,and is convenient for construction.From the perspective of sustainable development,this design reduces steel consumption,can be reused,reduces resource input costs,reduces construction noise and dust pollution,realizes resource recycling,reduces maintenance costs,and enhances structural durability.It meets the requirements of economic,social,and environmental sustainable development and provides a useful reference for subway tunnel construction.
