چکیده مقاله
This research applies advanced numerical modeling with Midas software to investigate the effects of groundwater withdrawal on the structural behavior of buried steel pipelines The study specifically evaluates how soil heterogeneity along the pipeline route, together with variations in pipe diameter and wall thickness, influence settlement patterns as well as the distribution of stresses and strains within the pipeline body and its flanged connections The simulation results demonstrate that soil heterogeneity significantly intensifies mechanical responses, leading to a 22% increase in von Mises stress relative to the yield stress This stress amplification can ultimately cause rupture, particularly when pipelines pass through sandy silt, silty clay, or soft clay strata Furthermore, enlarging the pipe diameter tends to elevate stress magnitudes and consequently increases the probability of failure, while enhancing wall thickness reduces stress concentration Overall, these findings provide valuable insights to improve design practices for buried pipelines exposed to subsidence triggered by groundwater withdrawal
کلیدواژهها
نویسندگان
Mahsa Najar
M Sc Student, Department of Civil Engineering, Kharazmi University, Tehran, Iran
علی قنبری
Professor, Department of Civil Engineering, Kharazmi University, Tehran, Iran
شیوه ارجاع
Najar, Mahsa and Ghanbari, Ali,1404,Numerical Investigation of Soil Heterogeneity Effects on Buried Pipeline Stresses Induced by Land Subsidence,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران