钢结构施工过程静力监测数据分段线性化表示方法  

A Method of Piecewise Linearization Representation for the Static Monitoring Data of Steel Structures During Construction

作　　者：高喜欣 罗永峰[1] 冯俊华 王磊 GAO Xixin;LUO Yongfeng;FENG Junhua;WANG Lei(College of Civil Engineering,Tongji University,Shanghai 200092,China;Shenzhen High Speed Engineering Consulting Co.,Ltd.,Shenzhen 518049,China;Tongen(Shanghai)Engineering Technology Co.,Ltd.,Shanghai 200433,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]深圳高速工程顾问有限公司,广东深圳518049 [3]同恩(上海)工程技术有限公司,上海200433

出　　处：《建筑钢结构进展》2020年第3期114-120,共7页Progress in Steel Building Structures

基　　金：国家自然科学基金(51078289、51678431)。

摘　　要：施工过程监测数据链的实质是自变量为时间的数据序列,分段线性化表示方法是表述时间序列数据特征的有效方法之一,但其在施工过程监测数据处理领域的应用较少。从获取施工过程静力监测时间序列数据的极值点入手,将获取的二次极值点序列作为监测时间序列的趋势转折点序列;采用转折点到区域距离的判断方法遴选出重要趋势转折点,并将其作为时间序列的分段点,从而实现静力监测时间序列的分段线性化表示。以浙江路桥新桥的整体移运施工过程监测为例,采用所提出的方法对其典型应力数据链进行分段线性化处理,验证了该方法的有效性。A data link to structural monitoring during construction is a time series.Piecewise linearization representation is one of the effective methods for presenting the data feature of the time series.However,less application of this method is shown in the field of the data processing for data monitoring during construction.In this paper,the piecewise linearization is applied to process the structural monitoring data during construction.Firstly,the extreme points in the time series of the monitoring data are obtained,and the secondary extreme point series if treated as the trend transition point series.Secondly,the distance between a trend transition point and the area of the other two transition points is used to select the important trend transition point as the segmenting points for piecewise linearization representation of time series.The proposed method is used to process the time series of data monitoring during the moving process of Zhejiang Road Bridge in Shanghai.The results show that the proposed method is effective and practical.

关 键 词：时间序列 施工过程监测 分段线性化表示 极值点 趋势转折点 

分 类 号：TU758.11[建筑科学—建筑技术科学] X830.3[环境科学与工程—环境工程]