Zheng et al 2021a - Revision history

Scipediacontent at 11:34, 22 July 2021

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Scipediacontent at 11:30, 22 July 2021

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Scipediacontent at 08:58, 14 May 2021

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Scipediacontent at 08:44, 14 May 2021

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Scipediacontent at 11:08, 30 April 2021

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Scipediacontent at 10:51, 30 April 2021

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Rimni at 12:24, 28 April 2021

2021-04-28T12:24:30Z

Rimni: /* References */

2021-04-28T12:24:06Z

‎References

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 {| style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: auto;"
 |-
-|style="padding:10px;"| [[Image:Zheng_et_al_2021a_6100_fig1.png|600px]]
+|style="padding:10px;"| [[Image:Zheng_et_al_2021a_6100_fig1.png|445px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;"| '''Figure 1'''. Schematic diagram of corrosion defect pipeline
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 {| style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: auto;"
 |-
-|style="padding:10px;"| [[Image:Draft_Zheng_851632191-image2.png|600px]]
+|style="padding:10px;"| [[Image:Draft_Zheng_851632191-image2.png|300px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;"| '''Figure 2'''. Finite element model containing corrosion defect

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 {| style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: auto;"
 |-
-|style="padding:10px;"| [[Image:Zheng_et_al_2021a_6100_fig1.png|426px]]
+|style="padding:10px;"| [[Image:Zheng_et_al_2021a_6100_fig1.png|600px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;"| '''Figure 1'''. Schematic diagram of corrosion defect pipeline
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 {| style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: auto;"
 |-
-|style="padding:10px;"| [[Image:Draft_Zheng_851632191-image2.png|348px]]
+|style="padding:10px;"| [[Image:Draft_Zheng_851632191-image2.png|600px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;"| '''Figure 2'''. Finite element model containing corrosion defect

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 {| style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: 45%;"
 |-
-|style="padding:10px;"| [[Image:Zheng_et_al_2021a_8566_fig3.png|354px]]
+|style="padding:10px;"| [[Image:Zheng_et_al_2021a_4727_fig3.png|454px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;"| '''Figure 3'''. Validation of model prediction failure pressure results

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 {| style="text-align: center; border: 1px solid #BBB; margin: 1em auto; width: auto;max-width: auto;"
 |-
-|style="padding:10px;"| [[Image:Draft_Zheng_851632191-image1.png|426px]]
+|style="padding:10px;"| [[Image:Zheng_et_al_2021a_6100_fig1.png|426px]]
 |- style="text-align: center; font-size: 75%;"
 | colspan="1" style="padding:10px;"| '''Figure 1'''. Schematic diagram of corrosion defect pipeline

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 |style="padding:10px;"| [[Image:Zheng_et_al_2021a_8566_fig3.png|354px]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" style="padding-bottom:10px;"| '''Figure 3'''. Validation of model prediction failure pressure results
+| colspan="1" style="padding:10px;"| '''Figure 3'''. Validation of model prediction failure pressure results
 |}
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 |style="padding:10px;"| [[Image:Draft_Zheng_851632191-picture- 2.svg|center|600px]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" style="padding-bottom:10px;"| '''Figure 5'''. Distributions of maximum von Mises stress and strain around X80 corrosion- defective pipelines under different internal pressure
+| colspan="1" style="padding:10px;"| '''Figure 5'''. Distributions of maximum von Mises stress and strain around X80 corrosion- defective pipelines under different internal pressure
 |}
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 |style="padding-top:10px;"| [[Image:Draft_Zheng_851632191-picture- 7.svg|center|600px]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" style="padding-bottom:10px;"| '''Figure 9'''. Distributions of maximum von Mises stress and strain around X80 corrosion- defective pipelines under different length of the loading area
+| colspan="1" style="padding:10px;"| '''Figure 9'''. Distributions of maximum von Mises stress and strain around X80 corrosion- defective pipelines under different length of the loading area
 |}
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 |style="padding-top:10px;"|  [[Image:Draft_Zheng_851632191-picture- 9.svg|center|600px]]
 |- style="text-align: center; font-size: 75%;"
-| colspan="1" style="padding-bottom:10px;"| '''Figure 11'''. Distributions of maximum von Mises stress and strain around X80 corrosion- defective pipelines under different defect depths
+| colspan="1" style="padding:10px;"| '''Figure 11'''. Distributions of maximum von Mises stress and strain around X80 corrosion- defective pipelines under different defect depths
 |}

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 | colspan="1" style="padding-bottom:10px;"| '''Figure 1'''. Schematic diagram of corrosion defect pipeline
 |}
 Numerical analysis of the buried pipeline under the ground loads is conducted by using the FE software ABAQUS6.14. The diameter of the pipeline is 0.66m, and the wall thickness is 8mm. The length of soil along the axial is selected 30 times the pipe diameter, and the height and width are 9 times and 15 times the pipe diameter, respectively, according to the previously published article [1]. Therefore, the whole size of the soil is <math display="inline">20{\rm m}\times 10{\rm m}\times 6{\rm m}</math>, and the buried depth is 1m. Considering that the model and boundary conditions have obvious symmetry, a quarter model is used for calculation, in order to improve the calculation efficiency. The FE model of buried corrosion defect pipeline under ground overload is shown in [[#img-2|Figure 2]]. The equivalent pressure is used to describe the ground overload, and the ground overload directly acts on the soil surface above the corrosion defect pipeline, as shown in [[#img-2|Figures 2]](a) and (c). The pipeline corrosion defect is simplified as a rectangle with rounded corners, and the detailed local shape is shown in [[#img-2|Figure 2]](d).

← Older revision		Revision as of 12:24, 28 April 2021
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	[[#tab-9\|Table 9]] shows the relationship between the buried depth of the pipeline and the predicted failure pressure under ground overload. The failure pressure decreases, as the buried depth of the pipeline increases. Properly increasing the buried depth of the pipeline is beneficial to increase the failure pressure value of the pipeline.		[[#tab-9\|Table 9]] shows the relationship between the buried depth of the pipeline and the predicted failure pressure under ground overload. The failure pressure decreases, as the buried depth of the pipeline increases. Properly increasing the buried depth of the pipeline is beneficial to increase the failure pressure value of the pipeline.
−

	<div class="center" style="font-size: 75%;">'''Table 9'''. Failure pressure of X80 corrosion-defective pipelines under different buried depths</div>		<div class="center" style="font-size: 75%;">'''Table 9'''. Failure pressure of X80 corrosion-defective pipelines under different buried depths</div>

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 ==References==
 <div class="auto" style="text-align: left;width: auto; margin-left: auto; margin-right: auto;font-size: 85%;">
 [1] Zhang J., Liang Z., Zhao G. Mechanical behaviour analysis of a buried steel pipeline under ground overload. Engineering failure analysis, 63:131-145, 2016.