山区机场高填方边坡稳定性分析  

ANALYSIS OF THE STABILITY OF HIGH FILL SLOPE IN MOUTAINOUS AIRPORT

作　　者：冯兴 姚仰平[2] 张健[1] 张献民[1] 黄信 FENG Xing;YAO Yangping;ZHANG Jian;ZHANG Xianmin;HUANG Xin(School of Transportation Science and Engineering,Civil Aviation University of China,Tianjin 300300,China;School of Transportation Science and Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]中国民航大学交通科学与工程学院,天津300300 [2]北京航空航天大学交通科学与工程学院,北京100191

出　　处：《力学与实践》2024年第1期89-98,共10页Mechanics in Engineering

基　　金：国家自然科学基金项目(51979001,51808547,52278542);天津市教委自然科学研究项目(2019KJ124)资助。

摘　　要：针对山区机场建设中的高填方边坡稳定性问题,本文解决了考虑含石量的统一硬化(unified hardening,UH)模型有限元强度折减法的关键问题:强度折减参数确定、安全稳定系数判断和初始地应力平衡方法确定。应用Mohr-Coulomb模型和考虑含石量的UH模型对山区机场高填方边坡稳定性进行了有限元分析,比较分析了应用两种模型计算的边坡安全稳定系数、位移和应变,得出了机场高填方边坡的稳定性规律,说明了应用考虑含石量的UH模型进行机场高填方边坡稳定性分析的有效性。Regarding the stability of high fill slopes in the construction of mountainous airports,this paper solves the key problems of the finite element strength reduction method of UH(unified hardening)model considering stone content:the determination of the strength reduction parameters,the judgment of the safety stability coefficient and the determination of the initial geo-stress balance method.The Mohr-Coulomb model and the UH model considering stone content are applied to conduct finite element analysis on the stability of high fill slopes in mountainous airports.The comparative analysis is conducted on the slope safety and stability coefficient,displacement,and strain calculated using two models.And the stability laws of high fill slopes are obtained.The effectiveness of applying UH model considering stone content to analyze the stability of high fill slope of airport is indicated.

关 键 词：统一硬化模型 土石混合料 边坡 稳定性 强度折减法 

分 类 号：TU43[建筑科学—岩土工程]