基于统计过程控制的建筑沉降监测分析方法  

Settlement Monitoring and Analysis Method for Building Based on Statistical Process Control

作　　者：王熠琛 张明聚[1] 李立云[1] 卢鑫月 WANG Yichen;ZHANG Mingju;LI Liyun;LU Xinyue(Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《北京工业大学学报》2022年第9期952-960,共9页Journal of Beijing University of Technology

基　　金：国家自然科学基金重点资助项目(51538001)。

摘　　要：为了改进传统基于双控指标建筑沉降监测分析思路存在的不足,引入统计过程控制技术对其优化,提出一种新的分析方法.该方法分别利用■统计控制图识别沉降变化是否稳定受控,R统计控制图识别差异沉降变化,■统计控制图识别总体沉降变化,并利用过程能力指数判断相对于阈值沉降控制能力是否满足要求,据此明确工程措施.结合北京地铁8号线盾构施工邻近古建筑工程项目,验证该方法的合理性.结果表明:引入统计过程控制(statistical process control,SPC)技术,可科学分析沉降演化过程的动态随机性;该分析方法不仅可以提出合理的工程措施,而且可以科学验证已执行措施的有效性.To improve the deficiencies for the current analysis based on the double-control indices, an optimized analysis method for the settlement monitoring of a building was proposed in this study by introducing statistical process control. Whether the settlement variation is controlled stably by employing ■ statistical control chart was identified by the method.■ control chart contains R chart was employed to identify the variation of the differential settlement and the ■ chart was employed to identify the total settlement. Moreover, whether the capacity of settlement control satisfies the corresponding threshold was evaluated by employing process capacity index. On the basis of these, the necessary engineering measures were ascertained. The practical case study of an ancient building adjacent to Beijing Metro Line 8 was introduced to verify the rationality of the method. It demonstrates that introducing SPC can analyze the dynamic randomness of the settlement evolution, and the method can define the reasonable engineering measures as well as verify the efficiency of the measures implemented.

关 键 词：建筑沉降 双控指标 监测分析 统计过程控制 ■统计控制图 过程能力指数 

分 类 号：U231[交通运输工程—道路与铁道工程] X830.2[环境科学与工程—环境工程]