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边(滑)坡工程设计中安全系数的讨论
引用本文:郑颖人,赵尚毅.边(滑)坡工程设计中安全系数的讨论[J].岩石力学与工程学报,2006,25(9):1937-1940.
作者姓名:郑颖人  赵尚毅
作者单位:后勤工程学院,土木工程系,重庆,400041
摘    要:不同的安全系数定义会引起计算得到的边(滑)坡安全系数与作用在抗滑桩上推力设计值的不同,造成边(滑)坡设计的混乱,因而有必要对边(滑)坡安全系数作出统一的定义。探讨几种不同安全系数定义形式,不同的安全系数定义对安全系数的数值与滑坡推力设计值都是不同的,指出按照传统的计算方法与目前国际上采用的边(滑)坡安全系数的定义,采用强度储备安全系数是较合理的,也符合边(滑)坡破坏的实际情况,因此建议一般情况下采用强度储备安全系数作为边(滑)坡的安全系数,在特殊情况下,采用超载储备安全系数更能符合设计情况。下滑力超载安全系数不符合工程实际,因为随着荷载的增大,抗滑力也会增大,实际上不会出现这种情况,不宜采用。

关 键 词:边坡工程  安全系数  强度折减
文章编号:1000-6915(2006)09-1937-04
收稿时间:2006-01-09
修稿时间:2006-01-092006-06-30

DISCUSSION ON SAFETY FACTORS OF SLOPE AND LANDSLIDE ENGINEERING DESIGN
ZHENG Yingren,ZHAO Shangyi.DISCUSSION ON SAFETY FACTORS OF SLOPE AND LANDSLIDE ENGINEERING DESIGN[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(9):1937-1940.
Authors:ZHENG Yingren  ZHAO Shangyi
Abstract:The slope and landslide stability safety factors and landslide thrust force design values in different safety factor definitions are different.It is necessary to make a unified safety factor definition.This paper presents a discussion on several different safety factor definitions.It is reasonable that the slope stability factor definition uses strength reduction method which best conforms to slope's realities.In special circumstances,over loading safety factor may better suit the realities.The landslide load-increased factor was adapted in imbalanced thrust force method.This method was adapted in the ground engineering generally.But it does not fit the mechanical condition of landslide.The resistant strength will increase with the load-increased.So this safety factor definition is not suitable to use in slope and landslide engineering design.
Keywords:slope engineering safety factor strength reduction
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