Buckling behaviour analysis of a buried steel pipeline in rock stratum impacted by a rockfall

Zhang, Jie; Zheng, Liancun; Han, Chuanjun; Zhang, Han

doi:10.1016/j.engfailanal.2015.09.009

Cited by 27 publications

(5 citation statements)

References 4 publications

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“…As a semi-infinite space, the soil is only part of the scope of this research. 31 According to the results of previous research and trial calculations, [32][33][34][35] The left half of the cross-sectional symmetry of the HDPE pipe at the center of the ground impact was divided into three areas A, B, and C, as shown in Figure 8A. According to the usual collapse height from a viaduct under blasting demolition, a model was designed where the collapse touchdown velocity was 10 m/s, the operating pressure of the gas pipeline was 0.4 MPa, the thickness of the overburden was 0.8 m, and the pipeline is located directly under the impact.…”

Section: Collapse Impactmentioning

confidence: 99%

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

Tang

et al. 2021

Energy Science & Engineering

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Section: Collapse Impactmentioning

confidence: 99%

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

Tang

et al. 2021

Energy Science & Engineering

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“…This damage dent would probably lead to a pipeline failure, such as buckling or collapse. 11,38 Figure 4 depicts the dent depth of pipelines with different burial depth. It shows that with the increase in burial depth, the dent depth declined significantly.…”

Section: Nonlinear Finite Element Model With Coupled Eulerian-lagrangmentioning

confidence: 99%

Risk-based integrity model for offshore pipelines subjected to impact loads from falling objects

Jiang

Dong

2020

Proceedings of the Institution of Mechanical Engineers, Part M:

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Impacts from falling objects can pose a major risk of failure for offshore pipelines. Appropriate protection measures are required to reduce this risk. To achieve this goal, a risk-based integrity model is proposed. Based on the surrogate model of genetic programming, the finite element analysis is cooperated with the probabilistic method to consider nonlinear effects on the failure probability. The required validations are performed to demonstrate the accuracy. The cumulative prospect theory is introduced to encapsulate the risk-attitudes in the consequence evaluation. This integrated model is further extended to determine an optimal protection strategy to obtain the maximum return on an investment, as well as ensure safety of the infrastructures. A case study is used to illustrate the methodology used to determine the burial depth, which is a primary protection measure. The parametric study showed that the soil property and pipeline wall thickness have a considerable influence on the risk. A comprehensive overview of the outputs from different risk-attitudes is also provided. This study can provide a reference for offshore pipeline safety design, and the proposed model can be used as a potential guideline for other researchers to develop customised risk assessment models.

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“…They have also analyzed the influence of rockfall parameters (impact velocity, radius, eccentric distance), pipeline parameters (internal pressure, wall thickness, diameter, buried depth), and location on the pipeline. For instance, Zhang et al used numerical simulation methods to investigate the buckling behavior of pipelines under the impact of square [17] and spherical [18] rockfalls, and explored the influence of pipeline and rockfall parameters on the stress and plastic strain of buried pipelines. A three-dimensional finite element model of a buried pipeline under the impact of a rockfall was established by Xiong et al [19], and the effects of the rockfall's scale, suspended height, and falling point on pipeline safety were studied.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of PCCP under the Rockfall Impact Based on the Continuous–Discontinuous Method: A Case Study

Ma,

Tu,

Zhou

et al. 2024

Water

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Rockfalls are major geological hazards threatening prestressed concrete cylinder pipes (PCCPs) in water diversion projects. To accurately assess the impact of large deformation movements of rockfalls on PCCPs, this study utilized the continuous–discontinuous method to investigate the dynamic response of a PCCP under a rockfall. The impact mode of rockfalls, the mechanical characteristics of PCCP, and the nonlinear-contact characteristics between soil and PCCP were considered in this study. The advantages of continuous and discontinuous numerical simulation methods were utilized to establish a continuous and discontinuous coupling model of “tube-soil-rock” considering the interaction of soil and structure. The impact mechanism and process of PCCP under the rockfall were investigated by simulating the rockfall process and analyzing its spatiotemporal evolution. The influence of PCCP under rockfalls with different heights and radii was studied to clarify the effects of these two parameters on the PCCP. Combined with a practical application example of large-scale water transfer projects, there is a tendency of center flattening under static load and dynamic impact load, and the PCCP part directly below the impact point is the most dangerous. This investigation provided a comprehensive understanding of the impact mechanism of the PCCPs under rockfall. The findings of this study have significant implications for the design of the protection engineering of PCCPs and ensuring the safe operation of water diversion projects.

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Buckling behaviour analysis of a buried steel pipeline in rock stratum impacted by a rockfall

Cited by 27 publications

References 4 publications

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

Risk-based integrity model for offshore pipelines subjected to impact loads from falling objects

Dynamic Response of PCCP under the Rockfall Impact Based on the Continuous–Discontinuous Method: A Case Study

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