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为了研究壳体基础在水工建筑物中的应用,我们于1979年冬,在睢宁县凌城公社三座预应力空心铰接板农桥圆柱墩的下部,采用了正圆锥壳体基础。设计荷载标准为旧汽—6级,跨径6.5米、净跨6.0米,桥面净宽5.0米。建成后,经过三年通车运行,情况良好。壳体基础用于一般工业与民用房屋柱基和筒形建筑物基础,设计方法已经成熟。在“工业与民用建筑地基基础设计规范”第三节,介绍了壳体基础设计方法及有关规定。我们的设计是按照此规范进行的。由于地基条件不同和基础受力情况的差异,且是刚开始应用,有些数值当规范规定有一定幅度的地方,采用偏于安全的数值。
In order to study the application of shell foundation in hydraulic structures, in the winter of 1979, a conical shell foundation was used in the lower part of three prestressed hollow hinged Bannong Bridge cylindrical piers in Lingcheng Commune, Suining County. Design load standards for the old steam -6, span 6.5 meters, 6.0 meters net span, net width of 5.0 meters bridge deck. After completion, after three years of operation, it is in good condition. The foundation of the shell is used as a foundation for general industrial and civil housing pillars and tubular buildings, and the design method has matured. In the third chapter of “Design Code for Foundation of Industrial and Civil Buildings”, the basic design method of shell and related regulations are introduced. Our design is in accordance with this specification. Due to the different foundation conditions and the basis of the force difference, and is just the beginning of the application, some values when the provisions of the regulations have a certain range, the use of biased to safety values.