【摘要】 由实测沉降曲线推算沉降的几种双曲线法和指数曲线法存在某些不足。沉降反馈计算法是在理论计算沉降曲线与实测沉降曲线不断拟合中,通过调整e～p压缩曲线和固结系数,使计算沉降更趋近于实测沉降,并以调整后的指标进行沉降计算与预测的方法。拟合中可进一步对各层土的计算曲线与实测分层沉降曲线拟合一致。不同固结时段可以采用不同的固结系数。在微机中可方便而快捷地实现反复拟合。经过澳门机场和上海浦东国际机场二期试验工程应用的检验,采用沉降反馈计算法取得了令人满意的效果。更多还原

【Abstract】 There are still shortcomings in the hyperbola and exponential curve methods for calculating the settlement by means of measured settlement curves. The feedback calculation method for settlement is a method in which, the theoretically calculated settlement curves are being constantly fitted in with the measured settlement curves and, during the fitting process, the e-p compressive curves and the coefficient of consolidation are adjusted to make the theoretically calculated settlement closer to the measured settlement. The modified indices are then incorporated in the calculations and prediction of soil settlement. During the fitting, the calculated curves of soils in various layers are further fitted in with the curves of the measured layer-wise settlement. Different coefficients of consolidation may be used in different stages of consolidation. With computers, repeated fitting can be made easily and rapidly. The feedback calculation method has produced satisfactory results in the works for Macao International Airport and the trial works for the second phase of Pudong Airport in Shanghai.更多还原