基于泊松穿越率解析法的梁桥变形可靠度模型研究  

Research on Deformation Reliability Model of Beam Bridge Based on Poisson Crossing Rate Analytical Method

作　　者：郑辉 

机构地区：[1]福州市市政工程中心,福建福州350004

出　　处：《福建建设科技》2024年第5期105-108,共4页Fujian Construction Science & Technology

摘　　要：挠度作为桥梁健康监测系统(HMS)采集的重要结构响应之一,特别是对于梁桥,可在很大程度上反映结构的刚度状况,是评估结构健康状态的重要指标。为了充分利用海量的挠度监测数据,本文基于非平稳过程的泊松穿越率理论,建立梁式桥变形可靠度显式模型,评估桥梁变形可靠度,并进行Monte Carlo模拟验证。结果表明:该方法的计算值和Monte Carlo模拟结果吻合较好,能够充分利用挠度监测数据较准确地评估梁式桥的变形可靠度。As one of the important structural responses collected by the bridge health monitoring system(HMS),deflection can reflect the stiffness of the structure to a large extent,especially for beam bridges,and is an important indicator for evaluating the health of the structure.In order to make full use of the massive deflection monitoring data,this paper establishes an explicit model of the deformation reliability of the beam bridge based on the Poisson crossing rate theory of the non-stationary process,evaluates the reliability of the bridge deformation,and conducts Monte Carlo simulation verification.The results show that the calculated values of this method are in good agreement with the Monte Carlo simulation results,and can make full use of the deflection monitoring data to more accurately assess the reliability of the beam bridge's deformation.

关 键 词：梁式桥 挠度监测 泊松穿越率 变形可靠度 Monte Carlo模拟 

分 类 号：U441[建筑科学—桥梁与隧道工程]