基于多元回归分析的连续压实监控技术  

Continuous compaction monitoring technology based on multiple regression analysis

作　　者：吴龙梁 江辉煌[1,2] 唐建伟[3] 高明显[2] 范少峰[4] 闫晓夏 WU Long-liang;JIANG Hui-huang;TANG Jian-wei;GAO Ming-xian;FAN Shao-feng;YAN Xiao-xia(China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Shenzhen Research and Design Institute,China Academy of Railway Sciences Corporation Limited,Shenzhen,Guangdong 518000,China;Bureau Public Work of Shenzhen Municipality,Shenzhen,Guangdong 518031,China;Shenzhen Construction Testing Center,Shenzhen,Guangdong 518052,China)

机构地区：[1]中国铁道科学研究院,北京100081 [2]中国铁道科学研究院深圳研究设计院,广东深圳518000 [3]深圳市建筑工务署,广东深圳518031 [4]深圳市建设工程质量检测中心,广东深圳518052

出　　处：《岩土力学》2020年第6期2081-2090,共10页Rock and Soil Mechanics

基　　金：中国铁路总公司科技研究开发计划重点课题(No.2016G006-C);深圳市建筑工务署技术研究课题(No.THZQ-033-2018)。

摘　　要：现实中的碾压参数难以得到严格控制以满足连续压实控制技术的应用要求,限制了该技术的适用范围和应用效果。为使碾压参数动态变化与工程实际相适应,对碾压参数进行了多元回归分析,并采用克里金插值法对连续压实控制指标的目标值/实测值进行全仓面化估计,提出了以压实合格率作为质量评价指标的连续压实监测模型。开展了现场碾压试验,建立了压实指标与碾压参数的多元回归关系,结合克里金插值法对常规质量检测指标进行了反向预测分析,验证了模型的有效性。工程实例分析表明,针对我国南方地区广泛分布的花岗岩残积土填料,遵循基于碾压参数多元回归的连续压实控制方法,深圳机场T4扩建工程2-1区的常规质量检测均满足设计要求。基于碾压参数多元回归分析的连续压实质量监测能够有效控制工程碾压质量,从而为连续压实控制技术的实际应用提供有益参考。In reality, the rolling parameters are often difficult to be strictly controlled to meet the application requirements of continuous compaction control technology, which greatly limits the scope of application and application effects of the technology. In order to adapt the dynamic variation of rolling parameters to the engineering practice, this paper performs multiple regression analysis for the rolling parameters, and uses Kriging interpolation method to estimate the target value/measured value of the continuous compaction control index. A continuous compaction monitoring model with the qualification rate of compaction as the quality evaluation index is proposed. The on-site rolling test is designed and carried out, and the multivariate regression relationship between compaction index and rolling parameters is established. The backward prediction analysis of conventional quality inspection index is conducted by combining Kriging interpolation method, which verifies the validity of the model. The continuous compaction control method based on the multivariate regression of rolling parameters is applied to the control of rolling construction quality of granite residual soil of District 2-1 of Shenzhen Airport T4 expansion project. The construction quality is verified to meet the design requirements by the conventional quality inspection method, demonstrating the effectiveness of the proposed method.

关 键 词：连续压实控制 碾压参数 多元回归分析 克里金插值法 

分 类 号：TU41[建筑科学—岩土工程]