成层土朗肯土压力分段函数方式计算方法  

Calculating Method of Rankine Soil Pressure in Layered Soil by Piecewise Function Method

作　　者：吕建源 LV Jianyuan(Design and Research Institute of China Railway Serenth Bureau Group Co.,Ltd,Zhenzhou 450016,China)

机构地区：[1]中铁七局集团有限公司勘测设计研究院,郑州450016

出　　处：《湖南工程学院学报（自然科学版）》2022年第1期90-94,共5页Journal of Hunan Institute of Engineering(Natural Science Edition)

摘　　要：基于朗肯土压力原理,利用分段函数和积分上限函数,推导了朗肯主动土压力P_(a)、总土压力E_(a)和墙顶裂隙深度z_(0)的代数表达式,以及朗肯被动土压力P_(P)、总土压力E_(P)的代数表达式.基于作用在单位墙长上的总土压力在作用点处挡墙上下方墙身的土压力相等的事实,给出了总土压力合力作用点位置的求解方法,且通过实例计算验证了本方法计算朗肯主动土压力的准确性.In this paper,based on Rankine earth pressure principle,the algebraic expressions of Rankine ac-tive earth pressure,total earth pressure,crack depth,and passive earth pressure and total earth pressure are derived by using piecewise function and integral upper bound function.Based on the fact that the total earth pressure acting on the unit wall length is equal to the earth pressure on the upper and lower part of the retain-ing wall at the point of operation,the calculation method for the position of the combined earth pressure is given,and the accuracy of the method for calculating Rankine active earth pressure is verified by an example.

关 键 词：朗肯土压力 分段函数 积分上限函数 

分 类 号：TU432[建筑科学—岩土工程]