Title:
BRIDGE SCOURING POWER IDENTIFICATION METHOD BASED ON HEALTH MONITORING DATA
Document Type and Number:
WIPO Patent Application WO/2023/060672
Kind Code:
A1
Abstract:
A bridge scouring power identification method based on health monitoring data. The method comprises: collecting an acceleration-time curve when a bridge foundation structure vibrates; collecting, by using a health monitoring system, an acceleration-time curve of each bridge foundation structure in a scouring state when the bridge foundation structure vibrates; obtaining, by means of calculation, warning control limits of time-frequency change abnormity warnings of a first-time bridge scouring evaluation reference mode; identifying abnormal segments in frequency segments of a bridge to be subjected to scouring identification; identifying an abnormal time-frequency sequence in time-frequency abnormal segments; and after a scouring early warning is completed on the abnormal sequence, updating the warning control limits of a time-frequency feature itself of a bridge scouring reference mode that fluctuates randomly, so as to prepare for the next abnormal change identification and scouring early warning. By means of the present method, structural system dynamic characteristic analysis is performed, such that a foundation scouring depth is dynamically identified, and long-term dynamic underwater foundation scouring monitoring and early warning can be realized.
Inventors:
XIONG WEN (CN)
ZHANG RONGZHAO (CN)
ZHANG RONGZHAO (CN)
Application Number:
PCT/CN2021/128853
Publication Date:
April 20, 2023
Filing Date:
November 05, 2021
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
G01H17/00
Foreign References:
| CN105241660A | 2016-01-13 | |||
| CN109002673A | 2018-12-14 | |||
| CN112085354A | 2020-12-15 | |||
| US20180224352A1 | 2018-08-09 | |||
| US20200375480A1 | 2020-12-03 |
Other References:
YI TING-HUA, QING GUO, LI HONG-NAN: "THE RESEARCH ON DETECTION METHODS OF GPS ABNORMAL MONITORING DATA BASED ON CONTROL CHART", GONGCHENG LIXUE
= ENGINEERING MECHANICS / ZHONGGUO LIXUE XUEHUI, CN, vol. 30, no. 8, 31 August 2012 (2012-08-31), CN , pages 133 - 141, XP093058056, ISSN: 1000-4750, DOI: 10.6052/j.issn.1000-4750.2012.04.0280
XIONG WEN, XUEFENG ZHANG, PINGBO TANG, BING WANG, JIANSHU YE: "Scour condition analysis on pylons of Hangzhou Bay Bridge by tracing dynamic behaviors of superstructures", JOURNAL OF SOUTHEAST UNIVERSITY (NATURAL SCIENCE EDITION ), DONGNAN DAXUE, NANJING, CN, vol. 48, no. 5, 30 September 2018 (2018-09-30), CN , pages 871 - 877, XP093058057, ISSN: 1001-0505, DOI: 10.3969/j.issn.1001-0505.2018.05.014
XIONG WEN, XUEFENG ZHANG, PINGBO TANG, BING WANG, JIANSHU YE: "Scour condition analysis on pylons of Hangzhou Bay Bridge by tracing dynamic behaviors of superstructures", JOURNAL OF SOUTHEAST UNIVERSITY (NATURAL SCIENCE EDITION ), DONGNAN DAXUE, NANJING, CN, vol. 48, no. 5, 30 September 2018 (2018-09-30), CN , pages 871 - 877, XP093058057, ISSN: 1001-0505, DOI: 10.3969/j.issn.1001-0505.2018.05.014
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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