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中文摘要：
为简化折线形土坡的库尔曼图解法，在王奎华直线形土坡简化方法的基础上，以挡土墙后二折线、三折线土坡为分析模型，以库伦土压力理论为基础，根据几何三角形与力矢三角形相似的关系对折线坡的库尔曼图解法进行了改进，提出了一种新的土压力图解法。和原库尔曼图解法相比，改进后的方法无需计算滑动土体的自重和逐一按比例尺量取线段表示滑动土体白重，计算量小，作图简便，所得结果更加精确。
英文摘要：
Aiming at simplifying the application of the Culmann＇s graphical construction in fold line slopes, the bio-fold and tri-fold line slopes behind the retaining wall are taken as the analytical models based on Wang Kuihua＇s amelioration on straight line slopes. According to the Coulomb＇s earth pressure theory and the similarity between the geometric triangle and the force vector triangle, a new graphical method is developed. Compared with the Culmann＇s graphical construction, the newly ameliorated approach needn＇t calculate the weight of the slide masses, and either needn＇t measure the line segments out proportionally to present the weight of the slide masses. The proposed approach needs fewer calculations and is more convenient, and the results are more precise.
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