Abstract
An aqueduct is a water conveyance structure that enables channel flow across canals, valleys, depressions, roads, and other structures. The optimal structural selection of the aqueduct is particularly important to ensure engineering quality and optimize project investment. To optimize the design of an aqueduct structure, this study established a mathematical model based on the three-dimensional finite element method that considers the temperature field and structural stress field coupling among its design parameters. The model was used to optimize and design the main wall thickness and tie spacings of the aqueduct structure. The Caohe aqueduct was considered as an example for the proposed design. The influences of temperature-induced stress on the reinforced concrete structure of the aqueduct in winter and summer were investigated based on the actual engineering conditions of the structure, and the corresponding structural optimization was obtained. The results showed that the optimized aqueduct can offset temperature and structural stresses, thus reducing the amount of material required. The maximum generated stress was also lower than that of the original design. Furthermore, this study is expected to provide guidance for similar engineering construction projects.
Highlights
An aqueduct is a water-conveying building that is significantly influenced by water
Temperature stresses influence aqueducts. us, an aqueduct structure that uses less material and resists temperature stress is of great significance to water transfer projects
Ere are three main types of concrete structures: plain concrete, which has no steel reinforcements, a high compressive strength, and a low tensile strength; reinforced concrete, which can withstand significant tensile stresses due to steel reinforcements; and prestressed concrete, where the concrete is squeezed due to high-strength prestressed steel reinforcement, enabling the resulting precompressive stresses to counteract external loads and increasing the crack resistance of structural members. is study focuses on prestressed concrete aqueducts, which are capable of withstanding considerable tensile and compressive stresses with reduced displacements, thereby preventing cracking [1]
Summary
An aqueduct is a water-conveying building that is significantly influenced by water. In particular, the expansion of water during freezing in winter will affect the aqueduct, and floods during summer will increase the water level of the aqueduct. Us, an aqueduct structure that uses less material and resists temperature stress is of great significance to water transfer projects. Liu [5] attained an economical and reasonable structural form for an aqueduct and its dimensions by optimizing its longitudinal slope, span cross-sectional form, and structural design This scheme was applied to the Eastern Water Supply Works of Shenzhen city, and the Mathematical Problems in Engineering economic benefits were validated. For aqueducts spanning long distances and subjected to varying climate conditions, optimizing the structure while accounting for temperature stresses can help reduce the amount of concrete required and the associated costs. Is study makes a significant contribution to the literature because the optimized structure considering temperature enabled reducing the amount of material required for aqueduct construction by 5-6% Simulations were performed to optimize the proposed aqueduct design for summer and winter conditions. is study makes a significant contribution to the literature because the optimized structure considering temperature enabled reducing the amount of material required for aqueduct construction by 5-6%
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