内河框架直立式码头结构受荷敏感区域研究  

Structural load sensitive area for inland river frame-structure vertical wharf

作　　者：刘明维[1,2] 张斯琪 吴林键[1,2] 李惠酒原 狄宇涛 代川 LIU Mingwei;ZHANG Siqi;WU Linjian;LI Huijiuyuan;DI Yutao;DAI Chuan(National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing 400074,China;Key Laboratory of the Ministry of Education on Hydraulic&Water Engineering,Chongqing Jiaotong University,Chongqing 400074,China;China Railway Changjiang Transport Design Group Co.,Ltd.,Chongqing 401121,China)

机构地区：[1]重庆交通大学,国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学,水利水运工程教育部重点实验室,重庆400074 [3]中铁长江交通设计集团有限公司,重庆401121

出　　处：《水运工程》2025年第2期51-62,71,共13页Port & Waterway Engineering

基　　金：国家自然科学基金项目(52279124);重庆市技术创新与应用发展专项(CSTB2022TIAD-KPX0097);中国中铁股份有限公司科技研究开发计划课题(2022-重点-41);2024年重庆交通大学研究生科研创新项目(2024S0059)。

摘　　要：为保证内河框架直立式码头长期运营安全,开展针对该结构服役性能的监测检测工作尤为重要。传感器的布设位置及方案将会直接影响码头监测结果的精度与可靠性,故应考虑将监测传感器布设在结构的受荷敏感区域内。然而,由于内河框架直立式码头结构形式复杂、荷载工况组合数量庞大,在最不利荷载组合下码头结构受荷敏感区的位置及分布目前尚不清楚。依托某内河大型枢纽港,建立框架直立式码头结构段三维数值仿真模型,通过编译码头结构重要构件最不利荷载工况组合算法,获得各构件的最不利荷载组合情况。在此基础上,结合有限元数值仿真计算方法,探明最不利荷载组合下码头各构件的受荷响应点分布规律与敏感区范围。结果表明,复杂组合荷载作用下,框架直立式码头钢构件的受荷敏感性较混凝土构件更大;钢构件受荷敏感区主要分布在前排钢靠船构件高、低水位的衔接处与悬臂端。研究成果在一定程度上解决了框架直立式码头结构监测测点冗杂、无效等问题,为内河枢纽港码头结构的监测传感器布设提供了理论依据。To ensure the long-term operational safety of frame-structure vertical wharfs in inland waterways,it is crucial to conduct monitoring and inspection of their service performance.The placement and scheme of monitoring sensors directly affect the accuracy and reliability of monitoring results.Therefore,sensors should ideally be positioned within the structural load sensitive areas.However,due to the complexity of frame-structure vertical wharfs and the large number of load combinations,the locations and distributions of structural load sensitive areas under the most adverse load combinations remain unclear.To address this issue,this study,based on a large inland hub port,establishes a three-dimensional numerical simulation model of a frame-structure vertical wharf segment.By developing an algorithm to identify the most adverse load combinations for critical structural components,the most adverse load combinations for each component are determined.On this basis,the distribution patterns of load response points and the ranges of sensitive areas under the most adverse load combinations are identified by using finite element numerical simulation.The results indicate that under complex load combinations,steel components of frame-structure vertical wharfs exhibit greater load sensitivity compared to concrete components.The sensitive areas of steel components are primarily located at the junctions of high and low water levels and the cantilever ends of the front-row steel mooring structures.This study addresses issues such as redundancy and ineffectiveness in monitoring point placement,providing a theoretical basis for the deployment of monitoring sensors in inland hub port wharfs.

关 键 词：框架直立码头 荷载组合 结构受荷敏感区 数值仿真 

分 类 号：U656.124[交通运输工程—港口、海岸及近海工程]