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Traveling wave effect on the seismic response of a steel arch bridge subjected to near fault ground motions

Earthquake Engineering and Engineering Vibration 2007年第3期6卷 245-257页

作者：徐艳 George C Lee MCEER University at BuffaloNY 14260 USA Department of Bridge EngineeringTongji UniversityShanghai 200092China MCEER University at BuffaloNY 14260USA

In the 1990s, several major earthquakes occurred throughout the world, with a common observation that near fault ground motion （NFGM） characteristics had a distinct impact on causing damage to civil engineering structures that could not be predicted by using far field ground motions. Since then, seismic responses of structures under NFGMs have been extensively examined, with most of the studies focusing on structures with relatively short fundamental periods, where the traveling wave effect does not need to be considered. However, for long span bridges, especially arch bridges, the traveling wave （only time delay considered） effect may be very distinct and is therefore important. In this paper, the results from a case study on the seismic response of a steel arch bridge under selected NFGMs is presented by considering the traveling wave effect with variable apparent velocities. The effects of fling step and long period pulses of NFGMs on the seismic responses of the arch bridge are also discussed.

关键词： traveling wave effect arch bridge near fault ground motion fling step long period pulses

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Reinforcement Effect Evaluation on Dynamic Characteristics of an arch bridge Based on Vehicle-bridge Coupled Vibration Analysis

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Computer Modeling in Engineering & Sciences 2022年第5期131卷 1041-1061页

作者： Yanbin Tan Xingwen He Lei Shi Shi Zheng Zhe Zhang Xinshan Wang National&Local Joint Engineering Laboratory of bridge and Tunnel Technology Dalian University of TechnologyDalian116023China Design Institute of Civil Engineering&architecture of Dalian University of Technology Co. Ltd.Dalian116023China Faculty of Infrastructure Engineering Dalian University of TechnologyDalian116023China

To numerically evaluate the reinforcement effect on dynamic characteristics of a concrete-filled steel tube arch bridge with vibration problems,a 12-degree-of-freedom sprung-mass dynamic vehicle model and a 3D finite element bridge model were ***,the coupled equations of vehicle-bridge interaction were derived and a computer program was developed using the FORTRAN *** program can accurately simulate vehicle-bridge coupled vibration considering the bumping effect and road surface irregularity during motion of the *** simulated results were compared with those of relevant literatures to verify the correctness of the self-developed ***,three reinforcement schemes for the bridge(Addition of longitudinal beams,Reinforcement of bridge decks,and Replacement of suspenders)were proposed and numerically simulated,and the vibration reduction effects of the three schemes were evaluated based on the numerical results to find effective *** is confirmed that the reinforcement scheme of Addition of longitudinal beams shows the most significant vibration reduction *** is recommended in the engineering practice that the combination of the reinforcement schemes of Addition of longitudinal beams and Replacement of bridge deck can be used to solve the excessive vibration problem.

关键词： arch bridge vehicle-bridge coupled vibration reinforcement numerical evaluation

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Finite element model for arch bridge vibration dynamics considering effect of suspender length adjustment on geometry stiffness matrix

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Journal of Chongqing University 2006年第4期5卷 218-222页

作者：钟轶峰 College of Civil Engineering Chongqing University

In this paper, we established a finite element (FEM) model to analyze the dynamic characteristics of arch bridges. In this model, the effects of adjustment to the length of a suspender on its geometry stiffness matrix are stressed. The FEM equations of mechanics characteristics, natural frequency and main mode are set up based on the first order matrix perturbation theory. Applicantion of the proposed model to analyze a real arch bridge proved the improvement in the simulation precision of dynamical characteristics of the arch bridge by considering the effects of suspender length variation.

关键词： finite element model suspender geometry stiffness matrix dynamic characteristic arch bridge

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STUDY ON DYNAMIC PROPERTIES OF A CONCRETE-FILLED STEEL TUBULAR arch bridge

STUDY ON DYNAMIC PROPERTIES OF A CONCRETE-FILLED STEEL TUBUL...

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The Third International Conference on Dynamics, Vibration and Control

作者： D.Jiang~1 Q.G.Fei~(1 2 *) and X.L.Han~1 1 Department of Engineering Mechanics School of Civil Engineering Southeast University Nanjing 210096 China 2 Ministery Education Key Laboratory of Concrete and Pre-stressed Concreter Structures Nanjing 210096 China

＜正＞Rapid progresses have been made in design and erection technologies of concrete-filled steel tubular arch bridge in recent ***,the research on dynamic properties of this type of bridge is far from mature. With the increasing span of concrete-filled steel tubular arch bridge,dynamic properties are becoming essentially important for the analysis of seismic and wind ***,dynamic properties could be valuable information for structural health monitoring.

关键词： arch bridge concrete-filled steel tubular dynamic testing sensitivity analysis model updating

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A steel suspended deck arch bridge over “Torrente Gravina” 6th

A steel suspended deck arch bridge over “Torrente Gravina”

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arch’10-the 6th International Conference on arch bridges

作者： A.De Luca A.De Martino F.Leccisi G.Lucibello F.Ricciardelli G.Mautone C.Briatico V.Caputo A.Medici G.Napoli Faculty of Engineering University Federico Ⅱ

ISBN: (纸本)9789537621100

The steel bridge over Torrente Gravina is part of the new road S.S.655 "Bradanica",in the province of *** choice of a steel tied arch was made to couple an efficient static behaviour,with a simple shape which well harmonises with the surrounding *** paper describes the main features of the bridge,its static behaviour and its erection *** analyses performed on the FEM model of the bridge indicated a satisfactory behaviour,both in terms of deflection and torsion of the deck and in terms of stability of the *** proved the correct torsional deck behaviour provided by "boxed-reticular-open section" guaranteed by triangulated trusses realized every 300 cm with hangers spacing equal to 600 cm.

关键词： static characteristics HANGERS bridges bridge (game) arch Deflection Steels tied arch arch bridge Suspended

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Research on Vibration Characteristics of Through arch bridge Influenced by Temperature

Research on Vibration Characteristics of Through Arch Bridge...

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第十一届南方计算力学学术会议（SCCM-11）

作者： Rong He Jianguo Xu Wei He School of Water Conservancy&Environment Zhengzhou University School of Civil Engineering and Communication North China University of Water Resource and Electric Power

Concrete filled steel tubular arch bridge is one of the complex multiply redundant structures including the nonlinear properties of material and state extremely influenced by temperature. And the vibration property is complicated. Based on the theory of perturbation and FEM a new calculation method is researched in order to get the vibration frequency and mode of bridge influenced by temperature more convenient and efficient. The relationship expressions between vibration frequency and mode with temperature are given and simplified. The Duzhuang through arch bridge is used as an example to study and analyze the vibration properties. The results show that under different temperature conditions the vibration frequencies of the bridge are considerably influenced, but the mode shape sequences change little. The relative error increase with the increasing of vibration order, but the maximum error is no more than 3.26% and the calculation accuracy of the method is high.

关键词： arch bridge perturbation finite element method temperature frequency vibration mode

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Mechanical performance evaluation of a new type of cable-stayed beam-arch combination bridge based on field tests

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Journal of Southeast University(English Edition) 2012年第1期28卷 64-72页

作者：马文刚黄侨陈晓强任远东南大学交通学院南京210096

In order to study the mechanical performance of a new type of cable-stayed beam-arch combination bridge, the results of field static and dynamic load tests are comparatively analyzed with numerical results based on the Jingyi bridge straddling the Daxi River in Yixing. First, the test scheme, tasks, the corresponding measure method, as well as the relevant codes are described. Secondly, two sets of three- dimensional finite element models are established. One is Ansys which uses the solid element and the other is Midas which adopts the beam element. Finally, the experimental and analytical results are comparatively analyzed, and they show an agreement with each other. The results show that the bridge possesses adequate load-carrying capacity under all static load cases, but the capacity of dissipating external input energy is insufficient due to the relatively smaller damping ratio. The study results can provide a reference for further study and optimization of this type of bridge. Calibrated finite-element models that reflect the real conditions can be used as a baseline for future maintenance of the bridge.

关键词： arch bridge cable-stayed bridge vertical load field test three-dimensional model

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Shed Light on the Geometrical Configuration and Structural Principle of an Ancient Wooden bridge in Qingming Shanghe Tu

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Journal of Civil Engineering and architecture 2012年第6期6卷 665-672页

作者： Pei-Shan Chen Department of Civil Engineering and architecture & Graduate School Hachinohe Institute of Technology Aomori 031-8501 Japan

In the centre of the famous Chinese painting, Qingrning Shanghe Tu, an arch-shaped timber bridge, Hongqiao, stands like a rainbow over the river Bianhe. Unfortunately, Hongqiao was damaged during floods from the Yellow River, and we can only see her beautiful form in Qingming Shanghe Tu. While, the geometrical dimensions, structural principle, as well as the construction methods of the bridge are still an interesting mystery. In the present paper, the author uncovers the structural principle and the geometric dimensions of the bridge as well as its history background. Furthermore, the author introduces two new structural systems, Lap-Beam and 1.5-Layer space frame, which are inspired by the structural principle of the Hongqiao.

关键词： Lap-beam 1.5-layer space frame arch bridge Hongqiao Qingming Shanghe Tu wooden bridge.

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