大面积堆载下桩基的计算

The calculation of earth piling load under column foundation on piles of large area

桩基负摩阻力是工程实践的一个热点问题，如在设计中未考虑，结构安全则不能得到保证。结合电厂干煤棚桩基设计，论述软土地区在大面积堆载情况下，如何计算单桩中性点，以及考虑负摩阻力后，桩基承载力、沉降的计算方法，并对计算结果加以分析，为相似工程提供参考。

The negative friction is a hotspot of engineering operation, if it is not be calculated, the saJTety of the structure will not be ensured. Combining with the pile foundation designed of a dry coal shed in the power plant, the paper presents how to calculate the middle point of the pile when the pile foundation is under the cumulate load of large area in the soft soil and the calculation of the carrying capacity and the settlement of the pile foundation is also discussed when the negative friction is considered . The re,~ult is analyzed for providing the reference of the resemble engineering.