China State Construction Engineering (China)

Automatic Recognition of Category, Burial Depth, and Diameter for Underground Pipeline Using GPR Based on YOLOv12 and Machine Learning Algorithm

Abstract Underground pipelines play a vital role in urban operation and development, and the rapid and accurate detection of their distribution remains an urgent challenge. Ground-penetrating radar (GPR) technology has been widely adopted for underground pipeline detection. There...

Seismic fragility analysis of multi-line transmission structure based on gas-insulated switchgear (GIS) equipment for nuclear power applications

The stable transmission of nuclear-generated electricity is vital for grid reliability and reactor external power supply. This study addresses this critical need by developing Finite Element Models (FEMs) of Gas-Insulated Switchgear (GIS) and a representative multi-line transmiss...

Performance analysis of U-shaped viscoelastic seismic brace for pipelines

The conventional seismic brace (CSB) reduces pipeline horizontal deformation under seismic loads by providing lateral stiffness. However, CSBs fail to dissipate extra seismic energy and consume energy merely through large deformation, which easily causes local buckling and brace...