在丘陵地区，无论是交通上的公路桥还是水利工程中的渡槽，在进行棋图纵向布置时，为节省边墩基础开挖量，往往会出现如下两种情况：一是靠近边跨的支域，承受左右拱圈传来的轴向推力，其作用点不在同一高程上，这样支墩承受的水平分力不平衡，两个抗剪面间出现在不同高程上，? In the hilly areas, whether it is a traffic bridge or a water conservancy aqueduct, in the longitudinal layout of the chess map, in order to save the excavation of pier foundation, there are often the following two situations: one is near the side of the branch Field, to withstand the axial thrust from the left and right arch ring, the role of the point is not the same elevation, so that the horizontal component of the pier imbalance is imbalance between the two shear planes appear in different elevation?