市政技术2026，Vol.44Issue(9)：162-168,204,8.DOI:10.19922/j.1009-7767.2026.09.162
基于梦境优化算法改进重力增加法的边坡稳定研究
Study on Slope Stability of Improved Gravity Increase Method Based on Dream Optimization Algorithm
夏俊仁1
作者信息
- 1. 金华铁路枢纽建设发展有限公司,浙江金华 321000
- 折叠
摘要
Abstract
Aiming at the three-dimensional instability characteristics of homogeneous soil slopes driven by gravity,as well as the bottleneck of search efficiency and local optimization trap encountered by the traditional gravity increase method in searching for the most dangerous slip surface,a novel slope-stability evaluation framework is proposed.Based on the upper-bound theorem of limit analysis,a logarithmic-spiral failure mechanism complying with the as-sociated flow rule is introduced.By discretizing the three-dimensional sliding mass with spatial meshes,the evalua-tion of slope stability is transformed into an extremum-seeking problem for the balance between external power and internal energy dissipation rate.On this basis,the Dream Optimization Algorithm(DOA)with memory-screening and logical-jump mechanisms is introduced.Relying on its powerful global-search capability,the algorithm funda-mentally enhances the logic of the gravity increase method and realizes efficient optimization of geometric parameters and safety factor.Comparative verification against classical ACADS examples demonstrates that the computational framework improved by DOA exhibits favorable robustness when dealing with complex non-convex response sur-faces.Under the given example conditions,the proposed framework achieves higher computational efficiency while maintaining convergence accuracy comparable to that of the Genetic Algorithm(GA).This coupled framework pro-vides a new perspective with clear physical mechanism and robust numerical performance for safety assessment in slope engineering.It can offer methodological references for failure-mode prediction and identification of similar ho-mogeneous soil slopes,and possesses certain engineering application value and theoretical significance.关键词
对数螺旋破坏机构/均质土坡/重力增加法/梦境优化算法/安全系数Key words
logarithmic-spiral failure mechanism/homogeneous soil slope/gravity increase method/dream opti-mization algorithm(DOA)/safety factor分类
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夏俊仁..基于梦境优化算法改进重力增加法的边坡稳定研究[J].市政技术,2026,44(9):162-168,204,8.
