径向固结系数计算方法与试验验证研究

Research and Experimental Verification of Radial Consolidation Coefficient Calculation Method

基于Terzaghi-Rendulic的轴对称固结理论,提出了一种径向固结系数计算公式,采用GDS固结试验验证该公式的有效性。首先,利用径向固结度和时间因子的关系,推导出径向固结系数的计算公式。然后,采用GDS固结试验系统,开展了不同固结压力下的径向排水固结试验,得到位移~时间曲线。最后,利用提出的公式计算出各级固结压力下的径向固结系数,并将理论解答与试验数据进行了对比。结果表明,提出的计算方法是可行的,能够实现对径向排水固结的试样位移随时间变化关系进行较为准确的预测。

Based on Terzaghi-Rendulic's axisymmetric consolidation theory,a radial consolidation coefficient calculation method is proposed,and a calculation formula is provided,followed by experimental verification.Firstly,the calculation formula of the radial consolidation coefficient was derived based on the relationship between radial consolidation degree and time factor.Then,using the GDS consolidation test system,radial drainage consolidation tests under different consolidation pressures were conducted,and displacement-time curves were obtained.Finally,the calculation method proposed in this paper was used to calculate the radial consolidation coefficient under various consolidation pressures,and the theoretical solutions were compared with experimental data.The results indicate that the computational method proposed in this paper is feasible and can accurately predict the time-dependent displacement of samples undergoing radial drainage consolidation.