Inertial mass controllers, including passive, semi-active and active strategies, have been extensively used for canceling human-induced vibrations in lightweight pedestrian structures. Codes to check the vibration serviceability current controller design approaches assume that both excitation forces are same on a flexible structure rigid structure. However, this fact may not be assumable since interaction phenomena arise even moderately Analyzing two case studies paper, involved...

Load models that account for Human-Structure Interaction (HSI) may be preferable to accurately predict the dynamic response of lightweight footbridges subjected pedestrian actions. Representing each person within a crowd not practical in engineering design calculations as time-variant with large number degrees freedom have managed. In addition, high computational time required achieve steady-state response. this sense, paper proposes novel approach calculate vertical from time-invariant...

The use of advanced low-density high-strength materials, such as Fibre Reinforced Polymers (FRPs) or aluminium alloys, has enabled to construct lightweight and slender footbridges, which structural design may be governed by the Vibration Serviceability Limit State (VSLS) under human-induced loads. These structures excited in resonance higher less energetic harmonics human actions contrast footbridges built with traditional construction materials. Additionally, Human–Structure Interaction...

Due to current architectural trends, contemporary public buildings are becoming open-plan spaces with much less weight and damping. Consequently, Vibration Serviceability Limit State (VSLS) due human-induced vibrations has become an increasing concern for structural engineers, especially when designing offices, hospitals, or gymnasiums. When dealing resonant vibrations, a slight increase in the floor-damping enables decreasing considerably vibration level. The damping strategy studied this...

The increasing use of lightweight materials in construction, such as fiber reinforced polymer (FRP) composites or aluminum, together with rising architectural tendencies towards slender and stunning layouts are enabling to dramatically decrease the weight contemporary structures.This fact involves a positive reduction structural carbon footprint, but it poses challenge complying vibration serviceability limit state (VSLS) under human-induced loading.Indeed, ultra-lightweight structures (with...

Human–Structure Interaction (HSI) can significantly influence the dynamic characteristics of pedestrian footbridges, particularly those distinguished by their lightness and slenderness. This study examines performance Tuned Mass Dampers (TMD) Semi-Active (STMD) on footbridges when modal parameters change due to HSI. For this purpose, a 30 m long simply-supported footbridge with linear mass values ranging from 200[Formula: see text]kg/m 2[Formula: text]000[Formula: fundamental frequency...

Cables and tendons are crucial elements in bridge engineering but also vulnerable structural because they usually subjected to fatigue corrosion problems. Thus, vibration-based non-destructive techniques have been used for external post-tensioning tendon assessment. Regarding continuous monitoring systems, assessment is carried out through the tracking of its natural frequencies subsequent estimation tension force, as this parameter essential bridge’s overall performance, thus providing...

ResumenEl avance continuo de la tecnología en los teléfonos móviles ha facilitado el desarrollo aplicaciones más complejas y especializadas. En actualidad se pueden encontrar sencillas para cálculo estructuras. este trabajo, da un paso con una nueva aplicación análisis dinámico. Más concretamente, desarrollado móvil que permite valorar estado servicio vibraciones estructuras puede ser utilizada tanto por profesionales como impartición cursos master artículo muestran resultados obtenidos...

Two key aspect must be considered for the design of modern footbridges: (i) their sensitivity to human-induced vibrations; and (ii) influence variation operational environmental conditions on modal properties.One possible option, guarantee an adequate behavior these structures under both conditioning factors, is installation a control system.Among different systems, active damping devices have shown great effectiveness when they are used dynamic response civil engineering uncertainty...

AbstractDynamic and experimental analysis of structures are two the most abstract complex disciplines in structural engineering, because its awkward mathematical physical background due to multidisciplinary knowledge needed go over whole (from acquisition measures up final interpretation results). In particular, Fourier (frequency domain analysis) discrete time, which is routinely used dynamic analysis, not usually well-understood even well computed time. Frequently, students lose motivation...

<p>The design of footbridges is usually strongly conditioned by the dynamic response structure. Thus, clear and accurate recommendations are needed designers to assess vibration serviceability limit state. The previous versions Eurocodes addressed this issue in a very cursory manner. Nevertheless, several practical guidelines shed light on absence technical guidance. For reason, current include detail procedure account for human-induced vibrations, proposing load models factors which...