钢混加强圈对钢波纹板裸拱涵动力特性的影响研究  

Influence of Steel-concrete Reinforcing Ring on Dynamic Characteristics of Exposed Steel Corrugated Arch Culvert

作　　者：毛军喜 欧立新 孔德睿 陈韬 张迅[2] MAO Junxi;OU Lixin;KONG Derui;CHEN Tao;ZHANG Xun(CCCC Third Harbor Engineering Co.,Ltd.,Shanghai 200032,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]中交第三航务工程局有限公司,上海200032 [2]西南交通大学土木工程学院,四川成都610031

出　　处：《施工技术（中英文）》2024年第18期32-37,共6页Construction Technology

基　　金：中交第三航务工程局有限公司科技研发项目(青年创新项目)(2023-18)。

摘　　要：基于现场试验和数值仿真手段研究了设置钢混加强圈的钢波纹板拱涵的动力特性。首先,采用锤击试验原理,测试了某实际钢波纹板裸拱的轴向、环向及局部振动传递特性。然后,采用有限元法计算了结构振动响应,并与试验结果对比验证其可靠性。在此基础上,分析了有无加强圈、加强圈间距、加强圈填充混凝土的影响规律。结果表明:钢混加强圈能有效提高钢波纹板拱涵结构的整体刚度,并起到显著阻振隔振效果;与不设加强圈相比,设加强圈时相同距离测点的加速度频响衰减量增大约30dB;空心钢板加强圈和钢混加强圈均能对振动衰减起积极作用,但钢混加强圈的隔振效果远好于空心钢板加强圈。The dynamic characteristics of steel corrugated arch culvert with steel-concrete reinforcing rings are analyzed by hammering test and numerical simulation.Firstly,the longitudinal,transverse and local vibration transmission characteristics are tested based on hammering test.Then,a finite element model is used to calculate structural vibration response and its reliability is verified.The influence of the structure with or without reinforcing ribs,the spacing of reinforcing ribs,and the filling of concrete with reinforcing ribs is then numerically analyzed.Results show that the particle damping method is effective in controlling vibration and noise within a wide frequency range.The integrity and overall stiffness of the structure are significantly improved by the reinforcing rings.The vibration isolation capability is significantly improved.Compared with the cases with or without the reinforcing rings,the acceleration frequency response attenuation at the same distance from the measuring point is increased by about 30dB.Both the hollow steel reinforcing ring and the steel-concrete reinforcing ring play a positive role in vibration attenuation,the vibration isolation effect of the steel-concrete reinforcing ring is significantly better than that of the hollow steel reinforcing ring.

关 键 词：拱涵 钢波纹板拱涵 加强圈 动力特性 锤击 试验 

分 类 号：U449.5[建筑科学—桥梁与隧道工程]