基于灰色理论的大跨度钢管混凝土拱桥承载能力检测方法

doi:10.13229/j.cnki.jdxbgxb20210907

摘要/Abstract

摘要：

为避免因承载力而引起的桥梁安全性能事故发生，提出了基于灰色理论的大跨度钢管混凝土拱桥承载能力检测方法。将传感器作为承载力检测的主要工具，确定检测系统架构，设计了控制中心、数据传输、采集等功能模块，添加通信协议，结合传感器运动方程，设置灵敏度，保障数据实时传输。使用均值法生成检测数据灰色序列，将裂缝程度当作影响承载力的主要因子，利用灰色关联分析和变换初始矩阵获得关联系数。规范标准差、标准化处理检测序列，经过累加与均值处理得出待检测参量，完成承载力检测。仿真实验证明，本文检测方法具有很好的动态响应性能，在静态与动态测试环境下检测结果均表明桥梁没有出现严重裂缝，承载能力与理论承载力接近。

关键词: 灰色理论, 钢管混凝土拱桥, 承载力, 灰色关联分析, 传感器

Abstract:

In order to avoid bridge safety accidents caused by bearing capacity， a bearing capacity detection method of long-span concrete-filled steel tube arch bridge is proposed based on gray theory. The sensor is used as the main tool for bearing capacity detection， the detection system architecture is determined， and the control center， data transmission， acquisition and other functional modules are designed. Communication protocols are added， and sensitivity is set in combination with the sensor motion equation to ensure real-time data transmission. The mean value method is used to generate the grey sequence of the test data， the degree of cracks is taken as the main factor affecting the bearing capacity， and the grey correlation analysis and the transformation of the initial matrix are used to obtain the correlation coefficient. Standardize the standard deviation， standardize the test sequence， and obtain the parameters to be tested through accumulation and mean value processing to complete the bearing capacity test. The simulation experiment shows that the proposed detection method has good dynamic response performance. The detection results in both static and dynamic test environments show that there are no serious cracks in the bridge， and the bearing capacity is close to the theoretical bearing capacity.

Key words: grey theory, concrete filled steel tubular arch bridge, bearing capacity, grey correlation analysis, sensor

中图分类号:

TU74

许博,李传习. 基于灰色理论的大跨度钢管混凝土拱桥承载能力检测方法[J]. 吉林大学学报(工学版), 2022, 52(10): 2360-2366.

Bo XU,Chuan-xi LI. Detection method of bearing capacity of long-span concrete-filled steel tubular arch bridge based on grey theory[J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(10): 2360-2366.

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