坝体所承受的主要荷载是上游面的巨大水压力。坝体分析的目的主要也在于研究水荷载所产生的应力及变形。在早期,人们把混凝土当作绝对不透水的材料;也不考虑地基的约束作用。因此,应力问题就简化为在表面上承受三角形分布的边界压力的无限楔体,并利用材料力学的公式解算。其后,人们察觉到地基刚 The main load on the dam body is the huge water pressure on the upstream face. The main purpose of dam analysis is also to study the stress and deformation caused by water load. In the early days, concrete was treated as absolutely impermeable material; nor did it consider the restraining effect of the foundation. Therefore, the problem of stress is reduced to an infinite wedge that withstands the triangular pressure distribution on the surface and is solved using the formula of material mechanics. Since then, people have noticed just the foundation