确定固结系数的固结速率半对数法

基于太沙基一维固结理论，推导了固结速率与固结时间的解析关系，为固结系数的求解开辟了新方法。该方法避免了图解法的缺陷，消除了初始沉降和次固结的影响。求解中采用最小二乘法原理，便于计算机数据处理。通过与现有方法比较，发现该方法准确、可靠和简便，可以在实际工程中推广应用。

A new method for evaluating coefficient of consolidation

According to the one-dimensional Terzaghi’s consolidation theory, the relationship between the consolidation velocity and time is deduced, which could be used to propose a new method for evaluating the analytical solution of the coefficient of consolidation. This new method avoids the disadvantages of the graphical methods, and eliminates the influences of the initial settlement and the secondary consolidation. Some statistic software can be used to deal with the original data based on the least square principle. Compared with the other traditional methods by two practical examples, the new method can determine the coefficient of consolidation in practice, with good accuracy, reliability and convenience. Especially, it does not need the test data from the initial and the secondary consolidation; so it can accelerate the course of the consolidation test.