某刚架拱桥的仿真模拟与静载试验研究  

Simulation and Static Load Test of a Rigid Frame Arch Bridge

作　　者：毛福超 MAO Fuchao(Shandong Beiqi Engineering Construction Co.,Ltd.,Jinan 250000,China)

机构地区：[1]山东北起工程建设有限公司,山东济南250000

出　　处：《河南科技》2025年第5期80-83,共4页Henan Science and Technology

摘　　要：【目的】以某刚架拱桥为研究对象,测试其静力和动力特性,以评估其工作状态和安全性能。【方法】结合静动载试验,进行桥梁结构在荷载作用下的振动频率、变形、应变的实际响应研究,并与有限元分析结果进行比较。【结果】根据实测与模型的前六阶频率,求得前六阶频率比在0.913~1.005之间,各控制截面测点应变校验系数在0.24~1.56之间,变形校验系数在0.48~1.14之间。【结论】从频率看,桥梁整体结构的动力性能较弱,整体刚度不足;从挠度测试结果看,基本能满足承载力要求,横向联系较弱;从应变结果看,桥梁承载能力不满足要求。因此该桥安全性能不满足要求,应立即采取措施限制重车通行。[Purposes]Taking a rigid frame arch bridge as the research object,its static and dynamic characteristics were tested,and its working state and safety performance were evaluated.[Methods]Combined with static and dynamic load tests,the actual response of the vibration frequency,deformation and strain of the bridge structure under load was studied and compared with the results of finite element analysis.[Findings]The ratio of the first six frequencies measured and the first six frequencies obtained by the model was between 0.913 and 1.005.The strain calibration coefficient of each control section was between 0.24 and 1.56,and the deformation calibration coefficient was between 0.48 and 1.14.[Conclusions]From the frequency point of view,the dynamic performance of the overall structure of the bridge is weak,and the overall stiffness is insufficient.From the deflection test results,the bearing capacity requirements can basically be met,and the lateral contact is weak.From the strain results,the bearing capacity of the bridge does not meet the requirements.Therefore,the safety performance of the bridge does not meet the requirements,and measures should be taken immediately to limit the passage of heavy vehicles.

关 键 词：刚架拱桥 荷载试验 仿真模拟 承载能力 评价 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]