基于Info-Gap的重力式挡土墙的鲁棒性分析
摘要:由于岩土力学参数的变异性及其数据信息获取的有限性,致使现有重力式挡土墙稳定性的不确定性分析方法难以反映其真实的安全性能和失效水平。拟在现有重力式挡土墙稳定性分析方法中引入Information-Gap (Info-Gap)理论,通过分析不确定参量允许不确定性程度的变化幅值及其度量方法,建立重力式挡土墙稳定性的不确定性分析的鲁棒可靠度评价模型;基于重力式挡土墙功能输出响应模型,利用区间组合法确定相应的鲁棒可靠度指标,进而建立了基于Info-Gap理论的重力式挡土墙鲁棒性设计方法。为了验证所提出的鲁棒性分析方法的有效性和重要性,结合某工程实例加以说明。在鲁棒性设计方法和可靠性设计方法的基础上对该设计进行了比较研究。该方法为因缺乏足够数据样本和信息量的工程问题的不确定性分析提供了新的途径。
Abstract:Due to the variability of geomechanical parameters and the limit of the obtained data information, the existing uncertainty analysis method for the stability of gravity retaining wall is difficult to reflect the true safety performance and failure level. The Information-Gap theory (Info-Gap) is introduced to the existing analysis method for the stability of retaining wall. Firstly, based on the analysis about the allowable change range of these uncertain variables and its measure method, a robust reliability evaluation model for uncertainty analysis of stability about gravity retaining wall is established. Secondly, based on the response output model to the stabilization and security function of gravity retaining wall, the robust reliability index is obtained by interval combination algorithm. Consequently, the robust design approach of gravity retaining wall is established based on Info-Gap theory. To demonstrate the effectiveness and significance of the proposed robust design methodology, an illustrative example is followed. A comparative study was made of the design on the basis of the robust design methodology and reliability-based design methodology. The proposed methodology affords a novel approach for the reliability assessment of retaining wall when the uncertain information is unavailable or scarce.
中文标题：
基于Info-Gap的重力式挡土墙的鲁棒性分析
Robust Design Approach of Gravity Retaining Wall Based on Info-Gap Theory
作者：
崔亚军1,王法军1,贺鹏2,郑程程2,王凤举3
Cui Yajun1,Wang Fajun1,He Peng2,Zheng Chengcheng2,Wang Fengju3
作者简介:崔亚军,男,1985年生,汉族,内蒙古赤峰人,大学本科,工学学士,工程师,研究方向为土木工程。E-mail:402380245@qq.com
通讯地址：
1. 山东高速路桥股份有限公司, 山东济南 250021; 2. 山东科技大学土木工程与建筑学院, 山东青岛 266590; 3. 山东建筑大学, 山东济南 250101
1.ShandongHi-speedRoad&BridgeCo.,Ltd.,Jinan250021,Shandong,China; 2.CollegeofCivilEngineeringandArchitecture,ShandongUniversityofScienceandTechnology,Qingdao266590,Shandong,China; 3.ShandongJianzhuUniversity,Jinan250101,Shandong,China
中图分类号:TU476.4
doi:10.3969/j.issn.1007-2993.2020.04.006
出版物：岩土工程技术
收稿日期:2019-08-07
网络出版日期:2021-07-06
关键词:重力式挡土墙稳定性,Info-Gap理论,不确定性分析,鲁棒可靠度指标
Key words:stability of gravity retaining wall,Info-Gap theory,uncertainty analysis,robust reliability index
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