倒拱底板是近年来在软基建闸上推广应用的一种新型结构,它具有拱型结构的受力特点,使底板主要承受轴向压力,减小底板弯矩,充分利用圬工砌体抗压性能的特点,使底板做得较薄,可少用或不用钢筋以达到减少截面尺寸、节约建筑材料、降低工程造价之目的。乐清县地处浙南沿海,海岸线长达140余公里,历年来随着农田排涝和海涂围垦工程的需要,已陆续兴建、移建和拆建了数量可观的中小型出海排涝水闸,其中多数建筑在软粘土 Inverted arch base plate is a new type of structure popularized and applied in soft foundation gate in recent years. It has the characteristic of arch structure, which makes the base plate bear the axial pressure, reduce the bending moment of the base plate, make full use of masonry masonry The characteristics of pressure performance, so that the floor made thinner, less or no reinforcement in order to reduce cross-sectional size, save building materials, reduce project cost purposes. Yueqing County is located along the coast of southern Zhejiang with a coastline of over 140 kilometers. Over the years, with the needs of farmland drainage and reclamation projects, a large number of small and medium-sized flood control sluices have been built, relocated and demolished. Most of the buildings In soft clay