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沿海地区软土处理一直以来是土木工程领域亟需克服的技术难题之一。由于软土渗透系数小,传统的处理方法效率十分低下,而电化学加固法不受渗透系数影响,排水固结速度快,加固效果显著。现阶段电化学加固机理仍未完善,限制了该法在实际工程中的推广应用,因此,有必要进一步开展对电化学加固法的研究。文章研究了氯化钙溶液的浓度和注浆量等因素对软土排水加固的影响。研究表明,在同等条件下,加入氯化钙溶液的排水速率优于直接电渗加固的排水速率;浓度小于20%时,随着浓度的升高排水速率不断提高;浓度大于30%时,随着浓度的升高,排水速率不断降低;最佳浓度范围为20%~30%;最佳浓度下的注入量对土中水的排出无影响。
Soft soil treatment in coastal areas has always been an urgent need to overcome one of the technical problems in the field of civil engineering. Due to the low permeability coefficient of soft soil, the traditional treatment method is very inefficient, while the electrochemical strengthening method is not affected by the permeability coefficient, the drainage consolidation speed is fast, and the reinforcement effect is remarkable. At this stage, the electrochemical reinforcement mechanism is still not perfect, which limits the popularization and application of this method in practical engineering. Therefore, it is necessary to further carry out the research on electrochemical strengthening method. The article studied the influence of the concentration of calcium chloride solution and the amount of grouting on the drainage consolidation of soft soil. The results showed that under the same conditions, the drainage rate of calcium chloride solution was better than that of direct electroosmosis. When the concentration was less than 20%, the drainage rate increased with the increase of concentration. When the concentration was more than 30% With the increase of concentration, the drainage rate decreased continuously. The optimum concentration range was 20% ~ 30%. The injection at optimum concentration had no effect on the discharge of soil water.