Earthquake deformation and stress distribution calculation method and system based on Green function

By using a triangular dislocation model and a fully analytical solution, combined with Burgers and Green's functions, the problems of insufficient accuracy and efficiency in traditional methods are solved. This enables high-precision and efficient calculation of seismic deformation and stress distribution under complex geological conditions, which is applicable to seismic risk assessment and seismic design of engineering projects.

CN122017946APending Publication Date: 2026-05-12EARTH PULSE (NINGBO) TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202610096308.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-23
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing methods for calculating seismic deformation and stress distribution based on Green's function have shortcomings in terms of accuracy, efficiency, and applicability. In particular, they are difficult to achieve efficient and real-time calculations under complex geological conditions. Furthermore, traditional methods are limited by model simplification and the influence of pseudo-singularities, making them unable to flexibly simulate complex faults and multi-source non-homogeneous media.

Method used

By employing a triangular dislocation model and combining it with a fully analytical solution, a coordinate system for Earth-fixed, triangular dislocation, and angular dislocation is constructed. Using Burgers and Green's functions, the displacement and stress fields within the triangular mesh are calculated, avoiding pseudo-singularities. This approach integrates analytical and numerical methods and is adaptable to complex geological environments.

Benefits of technology

It improves computational accuracy and efficiency, supports real-time processing of large-scale seismic events, is applicable to complex geological structures, enhances applicability to complex geological environments and computational stability, and is suitable for seismic risk assessment, volcano monitoring, and seismic design of engineering projects.

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Abstract

The invention belongs to the field of earthquake and stress distribution calculation, and particularly relates to an earthquake deformation and stress distribution calculation method and system based on a Green function. The method comprises the following steps: acquiring a triangular mesh and a to-be-measured point of a fault; constructing an earth fixed coordinate system, a triangular dislocation coordinate system and an angular dislocation coordinate system based on the triangular mesh of the fault; determining a transformation matrix to obtain a coordinate system; calculating interior angles of three vertexes of the triangular mesh in the coordinate system and corresponding supplementary angles, selecting equivalent configuration based on the supplementary angles, calculating barycentric coordinates of orthogonal projection of the to-be-measured point on the triangular dislocation plane, and selecting configuration based on a partition inequality of the barycentric coordinates; according to configuration, a Burgers function is obtained through calculation by using a solid angle formula, incomplete displacement contributions of all angular dislocations are superposed, and a complete displacement field containing slip continuity correction is obtained; a stress field is calculated based on a complete displacement field or through a Green function of strain. And the seismic deformation and stress distribution calculation performance is obviously improved.
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