CAJ | 학술논문

刚性挡墙被动位移模式包括平移(T)、绕墙顶一点转动(RTT)、绕墙顶转动(RT)、绕墙底一点转动(RBD和绕墙底转动(RB).挡墙位移模式对刚性挡墙被动土压力分布有重要影响.这一点目前缺乏理论解析解,需要建立考虑位移模式影响的刚性挡墙被动土压力分析方法.为此,建立被动位移模式函数,提出土体由一系列弹簧和理想弹塑性体组成,沿挡墙任一点被动土压力与相应水平位移成线性关系假定,得到了不同位移模式刚性挡墙被动土压力的计算公式.研究结果表明,被动土压力合力与Coulomb被动土压力的计算结果相等,但是被动土压力分布与挡墙位移模式参数m密切相关,为土体深度z的二次函数.被动土压力合力作用点也与挡墙位移模式参数m密切相关.所得的被动土压力分布与试验结果吻合较好.所提的不同位移模式刚性挡墙被动土压力通用计算方法具有重要的理论分析价值.
강성당장피동위이모식포괄평이(T)、요장정일점전동(RTT)、요장정전동(RT)、요장저일점전동(RBD화요장저전동(RB).당장위이모식대강성당장피동토압력분포유중요영향.저일점목전결핍이론해석해,수요건립고필위이모식영향적강성당장피동토압력분석방법.위차,건립피동위이모식함수,제출토체유일계렬탄황화이상탄소성체조성,연당장임일점피동토압력여상응수평위이성선성관계가정,득도료불동위이모식강성당장피동토압력적계산공식.연구결과표명,피동토압력합력여Coulomb피동토압력적계산결과상등,단시피동토압력분포여당장위이모식삼수m밀절상관,위토체심도z적이차함수.피동토압력합력작용점야여당장위이모식삼수m밀절상관.소득적피동토압력분포여시험결과문합교호.소제적불동위이모식강성당장피동토압력통용계산방법구유중요적이론분석개치.
A general analytical method to calculate the passive rigid retaining wall pressure was deduced considering all displacement modes.First,the general displacement mode function was setup,then the hypotheses were made that the lateral passive pressure is linear to the corresponding horizontal displacement and the soil behind retaining wall is composed of a set of springs and ideal rigid plasticity body,the general analytical method was proposed to calculate the passive rigid retaining wall pressure based on Coulomb theory.The analytical results show that the resultant forces of the passive earth pressure are equal to those of Coulomb's theory,but the distribution of the passive pressure and the position of the resultant force depend on the passive displacement mode parameter,and the former is a parabolic function of the soil depth.The analytical results are also in good agreement with the experimental ones.