Uplift Response of Large-Diameter Buried Pipeline in Liquefiable Soil Using Pipe-Soil Coupling Model

Zhu, Xiuxing; Xue, Shifeng; Xing-hua, Tong; Sun, Xiang

doi:10.1061/41202(423)189

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…Due to its high sensitivity, high resolution, long-term stability, strong anti-interference, waterproof and moisture-proof nature, small size, light weight, and other characteristics, it has gradually replaced the traditional test element and is becoming more and more popular with the general public. It is also used extensively in real-world engineering and model testing [19][20][21]. To look into the issue of minor displacements in big model testing, Yong Li et al [19] used FBG sensors in model tests.…”

Section: Introductionmentioning

confidence: 99%

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Laboratory Test Study on Pile Jacking Penetration Mechanism Considering Different Diameter and Length Based on Photoelectric Integration Technology

Wang

Zhang

et al. 2023

Buildings

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Model tests are carried out on the jacked single piles of different diameters and pile lengths under the model pile of different diameters and pile lengths in clayey soil, which aims to investigate the penetration mechanical mechanism. How to accurately test the pile end resistance and pile side resistance during jacked pile sinking is particularly important. In this paper, a full-section spoke-type pressure sensor, a double diaphragm temperature self-compensating fiber Bragg grating (FBG) earth pressure sensor and a sensitized miniature FBG strain sensor are jointly applied to a single pile penetration model test to test a single pile driving force, pile end resistance and pile body stress during penetration. The test results show that the load transfer performance of test piles will be affected by different diameters, and the axial force transfer capability of a large diameter in the depth direction is better than that of a small diameter since the compacting effect is more obvious. The unit skin friction of the pile increases gradually as the depth increases, which is larger due to the lateral extrusion force increasing as the diameter increases. At the same depth, the unit skin friction of two different diameter piles demonstrates “friction fatigue”, which also decreases obviously as the depth increases. Under the conditions of this test, the maximum frictional resistance of the pile TP1 pile side is about 27.7% higher than that of the test pile TP2. In the static pile sinking process of three test piles in cohesive soil, 50% is end bearing; therefore, there is 50% friction, and the diameter influences the end bearing and the length influences the friction.

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Section: Introductionmentioning

confidence: 99%

“…Additionally, many FBG soil strain sensors may be deployed on a single fiber even if they have varied center wavelengths, considerably simplifying installation and operation. Zhu Youqun et al [21] applied FBG and BOTDA jointly to the strain monitoring of the pile body during model test pile sinking.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Test Study on Pile Jacking Penetration Mechanism Considering Different Diameter and Length Based on Photoelectric Integration Technology

Wang

Zhang

et al. 2023

Buildings

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“…In 2009, based on the pipe-soil nonlinearity, using the double-broken line model of the pipe steel model combined with the elastic foundation beam theory, the theoretical analysis method of the buried steel pipe with the total axial strain under the strike-slip fault was proposed by Wang et al [19]. In 2011, based on the pipe-soil interaction model based on the pipe-soil coupling, the change of the ellipticity of the pipe section along the pipe axis of the large-diameter pipeline under the condition of upward buoyancy was studied by Zhu et al [20]. The vibrating table experiment results show that with the decrease of the sinusoidal value of the pipe-fault intersection Angle, the maximum strain experienced by buried pipelines decreases linearly, and the nonlinear relationship between the relative density and the strain experienced by buried pipelines was studied by Sim W W et al [21].…”

Section: Introductionmentioning

confidence: 99%

“…In 2011, based on the pipe-soil interaction model based on the pipe-soil coupling, the change of the ellipticity of the pipe section along the pipe axis of the large-diameter pipeline under the condition of upward buoyancy was studied by Zhu et al. [ 20 ]. The vibrating table experiment results show that with the decrease of the sinusoidal value of the pipe-fault intersection Angle, the maximum strain experienced by buried pipelines decreases linearly, and the nonlinear relationship between the relative density and the strain experienced by buried pipelines was studied by Sim W W et al.…”

Section: Introductionmentioning

confidence: 99%

Theoretical analysis and finite element simulation of pipeline structure in liquefied soil

Yang

2021

Heliyon

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A mechanical analysis model for the floating of buried pipelines in soil liquefaction areas is established in this paper. In order to improve the inherent defects of the elastic foundation beam method based on the Winkler model and increase the calculation accuracy, the Pasternak model is introduced and the interaction between soil and spring is considered. A mechanical analysis method for buried pipelines in liquefaction zone considering axial load is proposed in present paper. According to the Pasternak model and the deflection curve differential equation, the pipe bending deformation curve equation and the deformation coordination equation are derived. The analytical calculation method of the pipe mechanical response is established. A new method of the mechanical analysis of the floating of buried pipelines in the liquefaction zone is provided. The mechanical response of the pipeline under the conditions of different pipeline parameters and liquefaction zone length is analyzed. The reliability of the analysis method in this paper is verified by the comparison of finite element method (FEM). Considering that the previous researches of scholars mainly focused on straight pipes, there are few studies on the pipe structure nodes in liquefied soil. The mechanical properties of the three-way pipe structure in the soil liquefaction zone are analyzed by the finite element method (FEM). The influence of pipe diameter, wall thickness, liquefied soil density, transition zone length, buried depth, and pipeline internal pressure on the mechanical response of the pipeline is analyzed.

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“…There have been quite a lot of studies concentrating on the “uplifting” phenomenon of pipelines during soil liquefaction processes. The factors that affect the stress and deformation of pipelines during floating; for example, the buried depth, diameter, thickness, stiffness of the pipelines, the type, liquefied area, stiffness, and strength of soil, have been studied [ 7 , 8 ]. It is generally considered that the diameter of pipeline, liquefied depth, stiffness of soil are critical parameters which have great effects on the structure deformation of buried pipeline; the largest floating displacement occurs in the central of the pipe.…”

Section: Introductionmentioning

confidence: 99%

Uplifting Behavior of Shallow Buried Pipe in Liquefiable Soil by Dynamic Centrifuge Test

Huang

Lin

et al. 2014

The Scientific World Journal

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Underground pipelines are widely applied in the so-called lifeline engineerings. It shows according to seismic surveys that the damage from soil liquefaction to underground pipelines was the most serious, whose failures were mainly in the form of pipeline uplifting. In the present study, dynamic centrifuge model tests were conducted to study the uplifting behaviors of shallow-buried pipeline subjected to seismic vibration in liquefied sites. The uplifting mechanism was discussed through the responses of the pore water pressure and earth pressure around the pipeline. Additionally, the analysis of force, which the pipeline was subjected to before and during vibration, was introduced and proved to be reasonable by the comparison of the measured and the calculated results. The uplifting behavior of pipe is the combination effects of multiple forces, and is highly dependent on the excess pore pressure.

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Uplift Response of Large-Diameter Buried Pipeline in Liquefiable Soil Using Pipe-Soil Coupling Model

Cited by 4 publications

References 2 publications

Laboratory Test Study on Pile Jacking Penetration Mechanism Considering Different Diameter and Length Based on Photoelectric Integration Technology

Laboratory Test Study on Pile Jacking Penetration Mechanism Considering Different Diameter and Length Based on Photoelectric Integration Technology

Theoretical analysis and finite element simulation of pipeline structure in liquefied soil

Uplifting Behavior of Shallow Buried Pipe in Liquefiable Soil by Dynamic Centrifuge Test

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