CAJ | 학술논문

针对实际测量的沉降数据具有非等时距和变异性较大的特点，为了获取较为精确的路基沉降预测结果，提出一种分段调节变维分形预测法。首先，将实测数据分段，计算测点累计沉降的各阶分维数，通过光滑度确定分维阶数；其次，通过计算预测值及误差，确定分段值，作为分界点，建立分段变维分形模型；再次，由各段分界点及性能指标确定调节系数，用包含调节系数的有效数据点来表示预测沉降；最后，给出了一个工程实例。
침대실제측량적침강수거구유비등시거화변이성교대적특점，위료획취교위정학적로기침강예측결과，제출일충분단조절변유분형예측법。수선，장실측수거분단，계산측점루계침강적각계분유수，통과광활도학정분유계수；기차，통과계산예측치급오차，학정분단치，작위분계점，건립분단변유분형모형；재차，유각단분계점급성능지표학정조절계수，용포함조절계수적유효수거점래표시예측침강；최후，급출료일개공정실례。
In view of the characteristics of unequal interval and great variability existed in measured settlement values, in order to obtain more accurate embankment settlement prediction results, in this paper, a variable dimension fractal prediction method is presented. The concrete process includes:firstly, sectioning the measured data, calculating the each order fractal dimension of the cumulated settlement of all measured points, and confirming the fitting curve by aid of the smoothness;secondly, setting up a section variable dimension fractal model through the calculation and prediction error determined the demarcation point and value of section;again, utilizing the valid data with adjustment coefficient to predict the last settlement. Finally, an engineering example is given to demonstrate the feasibility of proposed algorithm.