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Slope displacement prediction based on multisource domain transfer learning for insufficient sample data
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作者 Zheng Hai-Qing Hu Lin-Ni +2 位作者 Sun Xiao-Yun Zhang Yu Jin Shen-Yi 《Applied Geophysics》 SCIE CSCD 2024年第3期496-504,618,共10页
Accurate displacement prediction is critical for the early warning of landslides.The complexity of the coupling relationship between multiple influencing factors and displacement makes the accurate prediction of displ... Accurate displacement prediction is critical for the early warning of landslides.The complexity of the coupling relationship between multiple influencing factors and displacement makes the accurate prediction of displacement difficult.Moreover,in engineering practice,insufficient monitoring data limit the performance of prediction models.To alleviate this problem,a displacement prediction method based on multisource domain transfer learning,which helps accurately predict data in the target domain through the knowledge of one or more source domains,is proposed.First,an optimized variational mode decomposition model based on the minimum sample entropy is used to decompose the cumulative displacement into the trend,periodic,and stochastic components.The trend component is predicted by an autoregressive model,and the periodic component is predicted by the long short-term memory.For the stochastic component,because it is affected by uncertainties,it is predicted by a combination of a Wasserstein generative adversarial network and multisource domain transfer learning for improved prediction accuracy.Considering a real mine slope as a case study,the proposed prediction method was validated.Therefore,this study provides new insights that can be applied to scenarios lacking sample data. 展开更多
关键词 slope displacement multisource domain transfer learning(MDTL) variational mode decomposition(VMD) generative adversarial network(GAN) Wasserstein-GAN
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岩土抗拉模量值修正与桩土作用理论解答研究 被引量:8
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作者 高子坤 施建勇 《力学学报》 EI CSCD 北大核心 2013年第5期739-745,共7页
地基土的变形模量值不仅和土层所受的先期固结压力大小直接相关,还受桩土作用产生的附加体积应变的影响.首先,针对岩土散体材料分析其本构关系的主要影响因素,研究模量随埋藏深度和体积应变的变化规律,并对Duncan--Chang本构模型进行抗... 地基土的变形模量值不仅和土层所受的先期固结压力大小直接相关,还受桩土作用产生的附加体积应变的影响.首先,针对岩土散体材料分析其本构关系的主要影响因素,研究模量随埋藏深度和体积应变的变化规律,并对Duncan--Chang本构模型进行抗拉模量值修正.其次,综合考虑岩土材料拉压模量不等修正以及桩土作用位移边界特点,应用变分理论推导桩土作用造成的位移、应变和应力场理论解答.最后,应用已有的经典土压力理论和小孔扩张理论对理论推导结果进行对比和分析验证.研究结果对桩基础设计施工、相应环境保护措施的选择和设计有较大的指导作用. 展开更多
关键词 桩土作用 岩土材料 本构关系修正 位移变分解
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