一、桩基开敞式水闸在黄河上的兴建和发展山东黄河两岸多为粉质壤土和粘性土,地基土壤摩阻系数小,承载能力低。在五十年代和六十年代初,修建水闸大多采用浮筏式闸型,依靠闸体自重维持稳定。特别是当水平推力较大时,闸体自重需要很大,因此,不得不采取减少地基荷载或增强地基的承载能力 First, the construction of open sluice piles on the Yellow River and the development of the Yellow River in Shandong Province mostly silty loam and clayey soil, the foundation soil friction coefficient is small, carrying capacity is low. In the 1950s and early 1960s, most of the sluice gates were constructed using floating raft brakes, which remained stable by their weight. In particular, when the horizontal thrust is large, the weight of the gate body needs to be large, so that it has to be taken to reduce the load on the foundation or to enhance the carrying capacity of the foundation