基于规划算法的多层地基一维固结超孔隙水压力估算

采用最小势能原理的规划算法,尝试将太沙基一维固结解析解中参数离散,求解多层地基的固结问题。本文在弹性地基及孔隙比与有效应力增量线性关系的假设下,以分层土总势能公式作为规划算法求解的目标函数,并将固结离散为n个部分进行,通过离散的太沙基解析式进行时间约束,建立了数学规划模型。该模型可依据平均固结度求解多层地基各单元超孔隙水压力分布。通过2个算例对规划算法进行了验证,文章所提出的模型计算得到的超孔隙水压力分布与引证文献中解基本一致,同时讨论分析了规划算法在压缩模量变化较大的地基中的误差问题。     

Methodology for Quantitative Estimation of One-Dimensional Consolidation Settlement Based on Hybrid Simulation Method

A hybrid simulation system, HyCoS, was developed involving the control, measurement, and analysis process in order to realize the basic algorithm of hybrid consolidation simulation. The system was fully automated by the development of the program HyCoS. Furthermore, a computer program, CONPERM, was also developed to obtain soil constitutive relationships in compression and hydraulic conductivity from inputting the data from the HyCoS simulation. Two laboratory simulations were conducted in order to verify the system involving the basic algorithm of the system and two major components, the software and hardware operation. The objectives of this process are divided into two major aspects. The first was to confirm whether the experimental equipment, such as the consolidometer and control and data acquisition device, maintained a stable operation status during the whole period of the consolidation test. In addition, verification was also carried out to determine whether the target control can actually be maintained on the specimen. The second objective was to confirm the reliability of the data obtained from the system HyCoS.