Analysis of Anti-Slide Performance of Slide-Resistant Piles of Aviation Fuel Pipeline under Landslide Disaster

In view of the simulation problem caused by large displacement problems such as soil sliding, the influence of landslide disaster on the operation of aviation fuel pipeline laid across the slope is analyzed. Using the SPH-FEM coupling algorithm and adopting different contact models to establish the...

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Veröffentlicht in:Fangzai Jianzai Gongcheng Xuebao 2023-01 (2), p.250
Hauptverfasser: Wang, Tao, Zhang, Lei, Liao, Fangjian, Wang, Jinrong, Lan, Xubin, Xu, Taolong, Jiang, Hongye
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container_start_page 250
container_title Fangzai Jianzai Gongcheng Xuebao
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creator Wang, Tao
Zhang, Lei
Liao, Fangjian
Wang, Jinrong
Lan, Xubin
Xu, Taolong
Jiang, Hongye
description In view of the simulation problem caused by large displacement problems such as soil sliding, the influence of landslide disaster on the operation of aviation fuel pipeline laid across the slope is analyzed. Using the SPH-FEM coupling algorithm and adopting different contact models to establish the full-size coupling models of pipe-soil interaction and pile-soil interaction, the nonlinear analysis is carried out to obtain the law of mechanical response of pipeline-soil, and the anti-slide performance of slide-resistant piles is analyzed to ensure the safety of the pipeline body in the landslide area. The results show that, under the working condition of this paper, when the landslide tends to be stable, the maximum values of displacement and stress developed in the pipeline under the action of soil thrust appear in the landslide body. However, due to the "soil arching effect" between the pile and the soil, the sliding soil behind the pile is more likely to stabilize, and the pipeline does not twist along the tube axis. With the increase of the number of slide-resistant piles, the anti-slide performance increases. However, for the working condition in this paper, the anti-slide scheme comprising two anti-slide piles with concrete strength of C30 can ensure the safe operation of the pipeline. The conclusions can provide theoretical support for the safe operation of aviation fuel pipeline, and present a feasible simulation method for the study of the mechanical behavior of pipelines under landslide and the anti-slide performance of slide-resistant piles.
doi_str_mv 10.13409/j.cnki.jdpme.20211101001
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Using the SPH-FEM coupling algorithm and adopting different contact models to establish the full-size coupling models of pipe-soil interaction and pile-soil interaction, the nonlinear analysis is carried out to obtain the law of mechanical response of pipeline-soil, and the anti-slide performance of slide-resistant piles is analyzed to ensure the safety of the pipeline body in the landslide area. The results show that, under the working condition of this paper, when the landslide tends to be stable, the maximum values of displacement and stress developed in the pipeline under the action of soil thrust appear in the landslide body. However, due to the "soil arching effect" between the pile and the soil, the sliding soil behind the pile is more likely to stabilize, and the pipeline does not twist along the tube axis. With the increase of the number of slide-resistant piles, the anti-slide performance increases. However, for the working condition in this paper, the anti-slide scheme comprising two anti-slide piles with concrete strength of C30 can ensure the safe operation of the pipeline. 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Using the SPH-FEM coupling algorithm and adopting different contact models to establish the full-size coupling models of pipe-soil interaction and pile-soil interaction, the nonlinear analysis is carried out to obtain the law of mechanical response of pipeline-soil, and the anti-slide performance of slide-resistant piles is analyzed to ensure the safety of the pipeline body in the landslide area. The results show that, under the working condition of this paper, when the landslide tends to be stable, the maximum values of displacement and stress developed in the pipeline under the action of soil thrust appear in the landslide body. However, due to the "soil arching effect" between the pile and the soil, the sliding soil behind the pile is more likely to stabilize, and the pipeline does not twist along the tube axis. With the increase of the number of slide-resistant piles, the anti-slide performance increases. 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Using the SPH-FEM coupling algorithm and adopting different contact models to establish the full-size coupling models of pipe-soil interaction and pile-soil interaction, the nonlinear analysis is carried out to obtain the law of mechanical response of pipeline-soil, and the anti-slide performance of slide-resistant piles is analyzed to ensure the safety of the pipeline body in the landslide area. The results show that, under the working condition of this paper, when the landslide tends to be stable, the maximum values of displacement and stress developed in the pipeline under the action of soil thrust appear in the landslide body. However, due to the "soil arching effect" between the pile and the soil, the sliding soil behind the pile is more likely to stabilize, and the pipeline does not twist along the tube axis. With the increase of the number of slide-resistant piles, the anti-slide performance increases. However, for the working condition in this paper, the anti-slide scheme comprising two anti-slide piles with concrete strength of C30 can ensure the safe operation of the pipeline. The conclusions can provide theoretical support for the safe operation of aviation fuel pipeline, and present a feasible simulation method for the study of the mechanical behavior of pipelines under landslide and the anti-slide performance of slide-resistant piles.</abstract><cop>Nanjing</cop><pub>Zhongguo Zaihai Fangyu Xiehui</pub><doi>10.13409/j.cnki.jdpme.20211101001</doi></addata></record>
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subjects Algorithms
Aviation fuel
Concrete properties
Coupling
Disasters
Finite element method
Landslides
Mechanical analysis
Mechanical properties
Nonlinear analysis
Piles
Pipelines
Simulation
Sliding
Soil mechanics
Soil-pile interaction
Soils
Working conditions
title Analysis of Anti-Slide Performance of Slide-Resistant Piles of Aviation Fuel Pipeline under Landslide Disaster
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