ZHOU Peng,CHEN Jinping,LI Yukun,et al.Orthogonal Numerical Test and Law Analysis of Vertical Earth Pressure on Buried Pipeline[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(05):1168-1176.
ZHOU Peng,CHEN Jinping,LI Yukun,et al.Orthogonal Numerical Test and Law Analysis of Vertical Earth Pressure on Buried Pipeline[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(05):1168-1176. DOI: 10.13409/j.cnki.jdpme20230707005.
Orthogonal Numerical Test and Law Analysis of Vertical Earth Pressure on Buried Pipeline
In order to calculate the vertical earth pressure on pipelines more accurately
10 influencing factors were summarized. By altering structural parameters such as trench slope angle and trench width
different burial methods of pipelines were considered. A total of 50 orthogonal numerical test models were established
using 10 factors with 5 levels each. The correlation between vertical earth pressure on pipelines and various factors was evaluated through orthogonal numerical test
and the variation patterns of vertical earth pressure under the influence of highly significant factors were obtained through single factor analysis. The results showed that there were a total of 6 highly significant factors
listed in order of significance from greatest to least: the pipe-soil modulus ratio
Poisson's ratio of backfill soil
trench slope angle
undisturbed soil elastic modulus
overlying soil height
and trench width. Among these
trench width and pipe-soil modulus ratio were positively correlated with the vertical earth pressure coefficient
while the overlying soil height
trench slope angle
undisturbed soil elastic modulus and Poisson's ratio of backfill soil were negatively correlated with the vertical earth pressure coefficient. The study provides a basis for calculating the vertical earth pressure coefficient and for pipeline deformation and stress analysis.
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