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張    磊 ， 雷    雨 ，張    璐  

（西安歐亞學院 ，陜西 西安 710065)

摘   要： 為了準確地計算出巖土工程可靠度目標函數(shù)達到最值時的任意一種可行解，本研究分析如何通過 快速遺傳算法來衡量與計算巖土工程的可靠度。在明確快速遺傳算法原理與步驟基礎(chǔ)上，利用一次二 階矩方法得到巖土工程可靠度數(shù)值衡量模型，并通過快速遺傳算法升級優(yōu)化可靠度衡量模型，以使模型中的變量一直處于正態(tài)分布狀態(tài)且問題架構(gòu)呈線性狀態(tài)，再對可靠度值進行快速遺傳計算。通過算法對比分析與實例列舉驗證此種算法的有效性，證明了此算法的計算精度與穩(wěn)定性更優(yōu)，并能實際應(yīng)用于山坡挖掘工程的施工方案可靠度分析。

關(guān)鍵詞： 快速遺傳算法； 巖土工程； 巖土工程分析； 可靠度； 可靠度指標

中圖分類號： G642      

文獻標志碼： A      

文章編號： 1005-8249 (2023) 03-0019-07

DOI : 10. 19860/j.cnki.issn1005-8249.2023.03.019

ZHANG Lei , LEI Yu , ZHANG Lu

( Xi ’an Eurasia University , Xi ’an 710065 , China)

Absrtact: In order to accurately calculate any feasible solution when the reliability objective function of geotechnical engineering reaches the maximum, this study analyzes how to measure and calculate the reliability of geotechnical engineering through fast genetic algorithm. On the basis of clarifying the principle and steps of the fast genetic algorithm, the reliability numerical measurement model of geotechnical engineering is obtained by using the first-order second moment method, and the reliability measurement model is upgraded and optimized by the fast genetic algorithm, so that the variables in the model are always in the normal distribution state and the problem structure is in the linear state. And then the reliability value is calculated by fast genetic algorithm. The effectiveness of this algorithm is verified by comparison of algorithms and analysis of examples. It is proved that this algorithm has better calculation accuracy and stability, and can be applied to the reliability analysis of engineering schemes of hillside excavation projects.

Keywords : fast genetic algorithm; geotechnical engineering; geotechnical engineering analysis ;  reliability; reliability index

? 基金項目： 2019 年 西 安 歐 亞 學 院 重 點 課 程 建 設(shè) 項 目 (2019KC008 ) ; 2021 年 陜西省教育廳科研計劃 項 目 資 助 (21 JK0257) ; 2021 年 陜 西 省 教 育 廳 科 研 計 劃 項  目 資 助 (21 JK0261 ) 。

作者簡介： 張 磊  ( 1985—) , 男，碩士，講師 。研究方向： 工程項目管理、成本管理、巖土工程。

收稿日期： 2022-09-20