高桩码头结构安全监测预警模型及工程应用  

High-pile wharf structure safety monitoring and forewarning model and its engineering application

作　　者：王承强[1,2] 王臣 贾宇 梁桂兰[2,3] WANG Chengqiang;WANG Chen;JIA Yu;LIANG Guilan(Nanjing Hydraulic Research Institute,Nanjing 210029,China;The National Key Laboratory of Water Disaster Prevention,Nanjing 210029,China;Hohai University,College of Harbor,Coastal and Offshore Engineering,Nanjing 210024,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]水灾害防御全国重点实验室,江苏南京210029 [3]河海大学港口海岸与近海工程学院,江苏南京210024

出　　处：《水运工程》2024年第4期15-21,共7页Port & Waterway Engineering

基　　金：国家自然科学基金项目(52109162);国家重点研发计划项目(2023YFC3206103);江苏省基础研究计划自然科学基金项目(BK20221192)。

摘　　要：高桩码头结构在服役期内会出现不同程度的损伤,导致码头结构安全性降低。为保证码头长期安全运行,可通过实时监测确定码头运行状态并及时预警。提出一种高桩码头结构安全监测预警模型,采用不同结构状态的设计控制值作为不同级别的预警阈值,每级预警阈值对应不同的风险程度,针对不同级别的预警提出相应处置措施。将该预警模型应用于南京港某高桩码头的安全监测,对可变荷载作用下码头结构位移和桩基应变进行实时监测,并计算设置码头结构位移和桩基应变三级安全预警阈值。结果表明,码头安全预警阈值的设置及安全告警的应对措施科学有效,实现了码头结构全工况整体技术状态评估和安全预警。The high-pile wharf structure is damaged to various degrees during the service life and the safety of structure is degenerated.To ensure the long-term safe operation of wharves,it is necessary to monitor their operating state and timely forewarn the risks through real-time monitoring.In this paper,a forewarning model of high-pile wharf structure safety monitoring is proposed,and design control values of different structural states are used as the forewarning thresholds of different levels.Each level forewarning value corresponds to different risk levels,and the disposal measures are proposed for different-level forewarning.The forewarning model is applied to monitor safety of a high-pile wharf in Nanjing Port,including displacement of the wharf structure and strain of the piles under variable load in real time,and the three-level safety forewarning thresholds of the displacement of the wharf structure and the strain of the piles are calculated and set.The results show that the setting of wharf safety forewarning threshold and the countermeasures of safety alarm are scientific and effective,which can realize the purposes of overall technical state assessment and safety forewarning of all the operating condition of the wharf structure.

关 键 词：高桩码头 可变荷载 动位移 动应变 安全监测 阈值 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]