双曲线配合法在某路基沉降反分析中的应用

The hyperbolic matching method in settlement back-analysis of a road foundation

本文根据哈尔滨某公路路基实测沉降资料,应用双曲线配合法推算了地基土的最终沉降量,并用太沙基渗透固结理论反分析出地基中粘土层的平均固结系数和渗透系数。应用太沙基方法,将反算出的渗透系数计算路基沉降,结果比选用实验室测得的渗透系数计算的沉降更接近实际沉降值。

The final settlement of the road foundation in Harbin was deduced by hyperbolic matching method according to the measured settlement, and the mean consolidation and the permeability coefficients of the clay blankets of foundation were obtained by back-analysis with Terzaghi permeability and consolidation method. This mean consolidation was as 1\^12～1\^31 times as that of the test result. When the permeability coefficients obtained in these two ways were both used in the Terzaghi method, the result of the back-analysis is closer to the fact settlement than the result of the labortary test.