Similarity characterization of geotechnical engineering sites under the site-specific data scenario

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL Bulletin of Engineering Geology and the Environment Pub Date : 2024-11-25 DOI:10.1007/s10064-024-03990-6

Liang Han, Mingjing Jiang, Wengang Zhang, Lin Yang

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Abstract

This study aims at developing a site similarity characterization method suitable for the site-specific data scenario. The site-specific data is generally multivariate, unique, sparse, incomplete, corrupted, and has temporal and spatial variability, briefly denoted as MUSIC-X. Considering the strong power of Bayesian theory in handling uncertainty, the Bayesian inference framework is employed to build the site-specific multivariate distribution model to characterize the site. Then, by combining the site-specific multivariate distribution model and the image structural similarity (SSIM) theory, a site similarity characterization method under site-specific data scenario is proposed. This proposed method was demonstrated by a real site-specific data in Onsøy site in Norway. The results show that (i) the proposed method can obtain the monotonic site similarity indicator with a range of [0, 1], (ii) site similarity can be assessed from three statistical perspectives, namely mean, standard deviation, and correlation, (iii) the proposed method allows for quantifying the uncertainty associated with site similarity characterization, and (iv) spatial correlation of geo-material parameters can be considered. Besides, the link between similarity and engineering characteristics of sites is revealed by a case study about the bearing capacity analysis of the shallow buried footing foundation.

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特定场地数据情况下岩土工程场地的相似性特征描述

本研究旨在开发一种适合特定地点数据情况的地点相似性特征描述方法。场地特定数据一般具有多元性、唯一性、稀疏性、不完整性、损坏性、时空变异性等特点，简而言之就是 MUSIC-X。考虑到贝叶斯理论在处理不确定性方面的强大威力，我们采用贝叶斯推理框架来建立特定场址的多变量分布模型，以描述场址的特征。然后，结合场地特定多元分布模型和图像结构相似性（SSIM）理论，提出了一种场地特定数据情况下的场地相似性表征方法。该方法通过挪威 Onsøy 遗址的实际数据进行了验证。结果表明：(i) 所提出的方法可以获得范围为 [0, 1] 的单调场地相似性指标；(ii) 可以从平均值、标准偏差和相关性三个统计角度评估场地相似性；(iii) 所提出的方法可以量化与场地相似性特征相关的不确定性；(iv) 可以考虑土工材料参数的空间相关性。此外，通过浅埋基脚地基承载力分析的案例研究，揭示了场地相似性与工程特征之间的联系。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.