Abstract
The safety evaluation of the aqueduct in many years of operation is often performed to determine the structural operational behaviour so as to provide a scientific basis for further reinforcement or reconstruction. The missing of the original design data due to the long construction period provides great challenging in the structural safety evaluation of the aqueduct. Taking a hyperbolic arch aqueduct in China as an example, we first rebuilt the aqueduct model using the three-dimensional (3D) point cloud from the three-dimensional laser scanning technology. Coupled with the on-site safety inspection, the 3D finite element analysis was then performed to learn the stress performance of the aqueduct body and its supporting structures, so as to achieve the purpose of safety evaluation of aqueduct structure in a whole.
Highlights
Aqueduct is a kind of overhead water conveyance structure, which is used to convey the water flow of canal and cross over rivers, valleys, depressions, roads, etc
We focus on the safety evaluation of a hyperbolic arch aqueduct in China which has been running for 40 years
This paper discusses the application of the 3D laser scanning combined with the finite element analysis to evaluate the safety of the hyperbolic arch aqueduct
Summary
Aqueduct is a kind of overhead water conveyance structure, which is used to convey the water flow of canal and cross over rivers, valleys, depressions, roads, etc. Due to the long time of construction and the low design standard at that time, the aqueduct operation is severely affected by various degrees of cracking, leakage and deformation [2, 3]. Due to the lack of relevant standards or codes for aqueduct safety evaluation, and considering the structural characteristics of the aqueduct itself, many scholars prefer to use the finite element method to analyze the aqueduct safety [4, 5]. Wang et al [6] tested the appearance quality, concrete strength and concrete carbonation depth of the U-shaped aqueduct, which is running for 28 years. They established the ANSYS finite element model, and analyzed the internal force value of each control section of the aqueduct.
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