XVIII IWRA World Water Congress Beijing China 2023
Sub-theme 5: Establishing Sustainable Water Infrastructures
Author(s): GU Shi-xiang，MEI Wei，TANG Chang，YANG Fan，HUO Yu-guo，CAO Zi-jun
GU Shi-xiang1，MEI Wei1，TANG Chang2，YANG Fan1，HUO Yu-guo1，CAO Zi-jun2
- Yunnan Institute of Water and Hydropower Engineering Investigation，Design and Research，Kunming 650021，Yunnan Province，China；
- State Key Laboratory of Water Resources and Hydropower Engineering Science，Institute of Engineering Risk and Disaster Prevention，Wuhan University，Wuhan 430072，Hubei Province，China
Poster: PDFAbstractObjectives of the study
For large pipeline projects involving multiple seismic zones,itis very important to accurately assess the pipeline safety of typical sites.In order to ensure the safety of pipelines in the action of active faults and improve the earthquake-resistant and disaster-mitigation capabilities of pipeline, this paper takes the fifth section of the AHongmain canal pipeline in Yuxiarea of the second stage diversion project in central Yunnan as an example to study the failure risk of pipelines under the action of active faults. The effects of mechanical parameters, displacement load and uncertainty of soil parameters on pipeline response are considered. The effects of earthquake magnitude, pipe wall thickness and filling depth on the failure probability of selected pipelines are also discussed.
Conclusions
- 2D model can be used for stochastic simulation to improve computational efficiency.
- The sensitivity analysis results show that earthquake magnitude and pipe wall thickness have a greater influence on the failure probability of the pipeline, while the filling depth has a lesser influence on the failure probability of the pipeline.
- In this calculation example, it is possible to consider using pipes with higher strength or reducing materialsTheAngle between the small fault and the pipeline can reduce the axial displacement load and improve the safety of the project.