Integrated numerical model for fault rupture propagation through uniform soil

IF 4.2 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-10-18 DOI:10.1007/s10064-025-04516-4

Abhiparna Dasgupta, Partha Sarathi Nayek, Maheshreddy Gade

引用次数: 0

Abstract

This study develops a novel numerical model using Abaqus 2D to examine fault rupture propagation through uniform soil. The model simulates a soil layer overlying elastic bedrock, initiating the fault rupture within the bedrock, ensuring a more realistic representation of rupture propagation. Validated against centrifuge tests and previous numerical studies, the model accurately predicts key engineering parameters such as surface deformation and fault outcrop location. The study highlights significant surface deformation and double shear band formation during normal faulting. Additionally, a parametric study examines the impact of earthquake magnitude and dip-angle on fault outcrop, plastic strain zones, and set-back distances. The proposed model offers greater flexibility in incorporating variations in seismic sources, providing valuable insights into rupture propagation through uniform soil, with implications for seismic hazard assessment and infrastructure resilience.

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均匀土体中断层破裂传播的综合数值模型

本研究利用Abaqus 2D建立了一种新的数值模型来研究断层破裂在均匀土中的传播。该模型模拟弹性基岩上的土层，在基岩内启动断层破裂，确保更真实地表示破裂传播。通过离心机试验和以往数值研究的验证，该模型能够准确预测地表变形和断层露头位置等关键工程参数。研究发现，在正断层作用下，地表有明显变形，形成双剪切带。此外，参数研究考察了地震震级和倾角对断层露头、塑性应变带和后退距离的影响。所提出的模型在考虑震源变化方面提供了更大的灵活性，为均匀土壤中的破裂传播提供了有价值的见解，并对地震危害评估和基础设施的恢复能力产生了影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.