Numerical analysis of building structures response under effect of continuous and stepped non-uniform settlement

Abstract

The occurrence of non-uniform building settlement and mine-induced earthquakes are common in areas with frequent mining activities. This phenomenon can be attributed to soil deformation and redistribution of internal forces resulting from mining activities, which often leads to significant damage to building structures. The long-term deformation of the slope of an open-pit mine after closure contributes to the non-uniform settlement of surrounding buildings. To address these issues, this paper presents four models for non-uniform settlement and analyzes the static and dynamic response characteristics of different building models. Numerical simulation contents demonstrate that the frame-shear wall structure combined with stepped settlement exhibits superior performance during static analysis, whereas the frame structure with continuous settlement lacks adequate support on safety evaluation. Moreover, mine earthquakes with magnitudes less than 3.0M (M for Richter scale) have a negligible impact on nearby buildings. On that account, the results would provide reference into building settlement and mine earthquake damage analysis in mining industrial cities.

Keywords

non-uniform settlement / structure response / numerical modeling / static analysis / dynamic performance

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