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3、aaaaaKcKhhKcKhh2111/hh 111,c222,c333,c1h2h3h123oh11111,2aaoaKcKz112aKc245121oatgK1111121aaKcKha上111,c222,c333,c1h2h3h123oh2221121,aaKcKza下245222oatgK22222112)(2aaKcKhha上33333221132)(aaaKcKhhh33322112)(2aaKcKhha下111,c222,c333,c1h2h3h123oh245323oatgK水土合算水土合算 粘性土粘性土 水土分算水土分算 无粘性土无粘性土Charles Augustin de
4、 Coulomb(1736-1806)22)sin(cos)cos()cos(2)(180sin)sin(220HWWE)sin()sin(cos)sin()cos()cos(222HE主动土压力强度分布主动土压力强度分布 作用点在离墙底H/3处，方向与墙背法线的夹角为。左图中所示的土压力分布只表示其大小，而不代表其作用方向。222)cos()cos()sin()sin(1)cos(cos)(cosaKaaKHE221=0 =0 =0 Ea=?aaaazKKzdzddzdE221222)cos()cos()sin()sin(1)cos(cos)(cospKppKHE221被动土压力强度分布被动土压力强度分布 ppppzKKzdzddzdE221
