防灾减灾工程学报2024，Vol.44Issue(3)：518-524,7.DOI:10.13409/j.cnki.jdpme.20230329001
基于Copula理论的高桩码头岸坡可靠性分析
Reliability Analysis of Piled Wharf and Bank Slope Based on Copula Theory
摘要
Abstract
The stability of bank slopes in a piled wharf is critical for the overall safety of the wharf structure.In order to further investigate the influence of the correlation and spatial variability of soil strength parameters on the reliability of piled wharf bank slopes,this paper employed Copula theory to analyze the joint probability distribution characteristics of bank slope soil parameters.Utilizing the PL AXIS computational platform,a numerical model of piled wharf-slope system was established.Ad-ditionally,an auxiliary subroutine named SAPW was developed via Python API interface to facilitate automatic data exchange and solution computation.This integrated,end-to-end reliability analysis framework encompassed pre-processing of parameters,calculation of sample conditions and reliability solving for the high-pile wharf-slope system.Furthermore,Monte Carlo simulation methods were used to conduct related numerical computations and parameterized analyses,investigating the impact of cohesion,internal friction angle variability,and their correlation coefficients on the reliability of piled wharf bank slopes.The results show that neglecting the correlation and spatial variability of soil parameters in the design and analysis of piled wharfs can overestimate the probability of bank slope fail-ure.This,in turn,leads to a conservative bias in related reliability analyses.Therefore,it is advisable to employ various Copula functions for comprehensive consideration in the reliability analysis of piled wharf bank slopes.关键词
高桩码头/岸坡/可靠性分析/Copula理论/桩土相互作用Key words
piled wharf/bank slope/reliability analysis/Copula theory/pile-soil interaction分类
交通工程引用本文复制引用
范军甫,崔春义,季则舟,熊琦,尤再进,王坤鹏..基于Copula理论的高桩码头岸坡可靠性分析[J].防灾减灾工程学报,2024,44(3):518-524,7.基金项目
国家重点研发计划项目(2021YFB2601102)、国家自然科学基金面上项目(51878109,52178315)、辽宁省航运联合基金项目(2020-HYLH-48)资助 （2021YFB2601102）
