Mechanical behavior of parallel pipelines under foundation pit excavation

• Autorzy: Han C. , Ma J. , Zhang J.
• Języki publikacji: EN

Abstrakty

EN

In order to study the effect of foundation pit excavation on mechanics of parallel pipeline, a pipeline-soil interaction model was established based on the finite element principle. The deformation of the pipeline by the foundation pit excavation were analyzed. Effect regulations of parallel distance, pipeline parameters and foundation pit parameters on the deformation of the pipeline were studied. The results show that there are two maximum stress areas in pipeline under the action of excavation. The upper and lower surfaces of the pipeline also appear the large stress area. The pipeline has horizontal and vertical displacements. With the increasing of the parallel distance, the deformation of the nearest pipeline increases, but the deformation of the farthest pipeline decreases. With the increasing of the radius-thickness ratio and distance between the foundation pit and the nearest pipeline, the deformation of the pipeline decreases. With the decreasing of the foundation pit width, the deformation of the pipeline decreases. Effect of the foundation pit’s length on the pipeline is not obvious.

Słowa kluczowe

EN

parallel pipeline; foundation pit; numerical simulation; axial strain; displacement

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2018
• Tom: Vol. 66, iss. 1
• Strony: 93--106
• Opis fizyczny: Bibliogr. 13 poz., rys., wykr.

Twórcy

autor

Han C.

• School of Mechanical Engineering Southwest Petroleum University Chengdu, 610500, China

autor

Ma J.

• School of Mechanical Engineering Southwest Petroleum University Chengdu, 610500, China

autor

Zhang J.

• School of Mechanical Engineering Southwest Petroleum University Chengdu, 610500, China
• Key Laboratory of Energy Engineering Safety and Disaster Mechanics (Sichuan University) Ministry of Education Chengdu, 610065, China

Bibliografia

• 1. Han C.J., Zhang H., Zhang J., Li Q., Analysis on influence of surface load to stressstrain characteristics of pipeline buried in hard rock region, Journal of Safety Science and Technology, 11(7): 23–29, 2015.
• 2. Zhang J., Zhang L., Liang Z., Buckling failure of a buried pipeline subjected to ground explosions, Process Safety and Environmental Protection, 114: 36–47, 2018.
• 3. Wang C.H., Duan W.X., Numerical Analysis on the Influence of Foundation Pit Excavations on the Working Behavior of Underground Pipelines, Chinese Journal of Underground Space and Engineering, 9(5): 1166–1172, 2013.
• 4. Cai J.P., Huang M.S., Qian J.G., Xu Z.H., DCFEM method for analyzing the influence of deep excavation on adjacent underground pipelines, Chinese Journal of Underground Space and Engineering, 6(1): 120–124, 2010.
• 5. Jiang Z., Theoretical analysis on deformation of pipeline caused by adjacent foundation pit excavation, Chinese Journal of Underground Space and Engineering, 10(2): 362–368, 2014.
• 6. Du J.L., Yang M., Influence analysis of excavation of deep pit on adjacent buried pipelines, Chinese Journal of Rock Mechanics and Engineering, 28(1): 3015–3020, 2009.
• 7. Yang X., Song H.W., Qin Y.M., Numerical analysis for influence of deep excavation on adjacent unprotected underground pipeline, Journal of Water Resources and Architectural Engineering, 9(3): 19–24, 2011.
• 8. Lv S.R., Liu H.Y., Yuan X.P., Numerical analysis of underground pipelines nearby affected by excavations, Industrial Construction, 40(1): 686–689, 2010.
• 9. Hu Q.J., Xu Y.H., Long Z.W., Zaxi P.X., Impact analysis of deep foundation pit excavation on adjacent pipeline in the sand gravel area, Electronic Journal of Geotechnical Engineering, 20: 681–694, 2015.
• 10. Ji K.X., Numerical analysis of effects of excavation on deformation of the adjacent pipeline based on ABAQUS, Tianjin Chengjian University, Tianjin, 2008.
• 11. Zhang J., Liang Z., Han C.J., Buckling behavior analysis of buried gas pipeline under strike-slip fault displacement, Journal of Natural Gas Science and Engineering, 21: 921– 928, 2014.
• 12. Zhang J., Liang Z., Han C.J., Effects of ellipsoidal corrosion defects on failure pressure of corroded pipelines based on finite element analysis, International Journal of Electrochemical Science, 10: 5036–5047, 2015.
• 13. Zhang J., Liang Z., Han C.J., Numerical simulation of buckling behavior of the buried steel pipeline under reverse fault displacement, Mechanical Sciences, 6: 203–210, 2015.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).