Results 11 to 20 of about 449 (247)
Shear Lag Effects on Pedestrian-Induced Vibration and TMD-Based Vibration Control of Footbridges [PDF]
Structural Engineering International, 2022 The shear lag effect (SLE) is one of the vital mechanical characteristics of structures with thin-walled box sections. While most existing studies of the SLE focus on the static response of footbridges, pedestrian-induced vibration deserves more attention since it represents the actual response of footbridges during their practical service process.
Fu, Bo +3 more
openaire +3 more sources
Parameter Calibration of a Social Force Model for the Crowd-Induced Vibrations of Footbridges
Frontiers in Built Environment, 2021 A reliable prediction of the human-induced vibrations of footbridges relies on an accurate representation of the pedestrian excitation for different loading scenario. Particularly, the modeling of crowd-induced dynamic loading is a critical issue for the
Elisa Bassoli, Loris Vincenzi
doaj +1 more source
Sensitivity Analysis for Pedestrian-Induced Vibration in Footbridges
Buildings, 2022 This paper aims to provide a novel insight into the influence of uncertainties in system- and pedestrian-induced load parameters on the vibration response of footbridges. The study begins with a sensitivity analysis for the vertical vibration response of a representative footbridge to two loading cases: a single pedestrian and a crowd.
Xiaojun Wei +3 more
openaire +3 more sources
Applied Sciences, 2021 As human occupancy has an enormous effect on the dynamics of light, flexible, large-span, low-damping structures, which are sensitive to human-induced vibrations, it is essential to investigate the effects of pedestrian–structure interaction.
Huiqi Liang +4 more
doaj +1 more source
Infrastructures, 2023 Vibrations are an issue of increasing importance in current footbridge design practice. More sophisticated footbridges with increasing spans and more effective construction materials result in lightweight structures and a high ratio of live load to dead ...
Vanni Nicoletti +4 more
doaj +1 more source
Optimal actuator placement for control of vibrations induced by pedestrian-bridge interactions
Mathematics in Applied Sciences and Engineering, 2023 In this paper, an optimal actuator placement problem, with a linear wave equation as the constraint, is considered. In particular, this work presents the framework for finding the best location of actuators depending upon the given initial conditions ...
Martin Arop +3 more
doaj +1 more source
Vibration Analysis of Low Height-to-Span Ratio Pedestrian Bridge under Human-Induced Excitation
Advances in Civil Engineering, 2023 Driven by the aesthetic pursuit of the urban landscape, pedestrian bridges become longer, lighter, and slender, which may be susceptible to unacceptable vibrations induced by human activities.
Wei Wang +8 more
doaj +1 more source
A theory of pedestrian-induced footbridge vibration comfortability based on sensitivity model [PDF]
Advances in Bridge Engineering, 2021 AbstractPedestrian-induced footbridge vibration comfort level is a complex problem that has been studied for a long time. However, no consensus has been reached on a quantitative calculation index for assessing vibration comfort level. Only simple comfort limits, rather than specific relationships between comfort level and the vibration endurance ...
Deyi Chen, Shiping Huang, Zhenyu Wang
openaire +1 more source
PEDESTRIAN-INDUCED VIBRATION IN FRP TRUSS FOOTBRIDGES
Doboku Gakkai Ronbunshu, 2003 本論文では, スパン30mクラスのFRP歩道橋の振動特性を明らかにすることを目的として, まず, ガラス繊維補強FRP形材を用いて断面算定を行い, その自由振動解析から, 1次の非減衰自由振動モードは水平横方向変形の卓越するモードで, その振動数が歩行との共振周波数と近接していることを論じている. 次に, 単独歩行者モデルを用いた時刻歴応答解析を実施し, 水平横方向の固有振動数に近い歩行振動数の歩行外力を入力した場合, 水平横方向に大きな応答を生ずることを明らかにした. 対応する振動モードでの軸歪エネルギーが卓越する部材のみをカーボン繊維形材にすることで, 歩行による振動を小さく抑えることができることも示している.
Seishi YAMADA, Sumio CHIKADA
openaire +2 more sources
Air Waves Induced by Truck Passage in a Slender Motorway
Shock and Vibration, 2022 The interaction between a pedestrian bridge for a motorway crossing and air pressure waves induced by the truck passage is discussed with reference to a slender footbridge in Pregnana (Italy).
Fabio Rizzo +3 more
doaj +1 more source