基于响应面法的杭州海相软土固化强度模型

发布时间：2018-02-04 10:43

本文关键词： 初始含水量有机质含量量化模型旋转中心组合设计响应面法　出处：《浙江大学学报(工学版)》2014年11期 　论文类型：期刊论文

【摘要】：为了综合考察土初始含水量、土有机质含量、水泥掺量比及固化剂CX-13掺量对固化效果的影响,对不同土体提出固化方案,以有机质含量、初始含水量、水泥掺量、CX-13掺量作为4个自变量,以固化土28d无侧限抗压强度作为响应值,采用旋转中心组合设计安排试验.利用响应面法对试验结果进行回归分析,建立各自变量与强度响应间的量化模型.考察各自变量间的交互作用关系,并从机理上对各交互关系进行探讨.结果表明:固定初始含水量与CX-13掺量,强度响应峰值对应的有机质含量随水泥掺量的增大而减小;固定有机质含量与CX-13掺量,强度响应峰值对应的初始含水量随水泥掺量的增大而增大;固定有机质含量与初始含水量,水泥的最佳掺量与CX-13掺量呈正相关关系.
[Abstract]:In order to investigate the effect of soil initial moisture content, soil organic matter content, cement content ratio and curing agent CX-13 content on the solidification effect, the solidification scheme was put forward for different soils, with organic matter content and initial water content. The cement content (CX-13) is taken as four independent variables and the unconfined compressive strength of the solidified soil for 28 days is taken as the response value. The experiment was arranged by rotating center combination design. The regression analysis of the test results was carried out by using response surface method, and the quantitative model between each variable and the intensity response was established, and the interaction relationship between each variable was investigated. The results show that the content of organic matter corresponding to the peak strength response of fixed initial water content and CX-13 content decreases with the increase of cement content. The content of fixed organic matter and the content of CX-13, the initial water content corresponding to the peak value of strength response increased with the increase of cement content. There is a positive correlation between the content of fixed organic matter and the initial water content, the optimum content of cement and the content of CX-13.
【作者单位】：浙江大学滨海和城市岩土工程研究中心;浙江围海建设集团股份有限公司;
【基金】：国家自然科学基金资助项目(51178420)
【分类号】：TU447;TU472
【正文快照】： 杭州地区分布有大片海相软土[1],具有高含水量与高有机质含量的特点.若要对这些土体加以工程利用,常常涉及土体的固化处理过程.目前,国内已有一些涉及土体含水量或有机质含量的软土固化研究成果,如刘顺妮等[2]采用水泥、单一外加剂和复合外加剂对高含水黏土进行固化试验,探究

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