China
Africa
Explore chapters and articles related to this topic
Field Testing of Pedestrian Bridges
Published in Eva O.L. Lantsoght, Load Testing of Bridges, 2019
Darius Bačinskas, Ronaldas Jakubovskis, Arturas Kilikevičius
After testing of the bridge, the gathered experimental data should be sufficient to evaluate the structural condition and make a decision on further operation. Generally, the following data should be presented (Lithuanian Road Administration, 2005; Sétra, 2006): Structural drawings and technical parameters of the bridge, notation and dimensions of the main structural elements;Material characteristics, determined from laboratory or field tests;Deterioration or damage of the load-bearing elements;Theoretical model of the bridge, describing the assumed simplifications, modeling techniques, and material properties;Test loads on the bridge: type, duration, and distribution of loads;Details on testing and measurement of bridge response: test procedure, types and distribution of measurement devices, and weather conditions;Analysis of the experimental data, comparison with the theoretically obtained results, and evaluation of footbridge condition based on test results.
Evaluation of dynamic response of a footbridge to human movement and traffic-induced vibrations
Published in Alphose Zingoni, Insights and Innovations in Structural Engineering, Mechanics and Computation, 2016
J.M. Dulinska, I.J. Murzyn, K. Pluta
The primary function of footbridges is to carry pedestrians over an obstacle and their movement are usually taken into consideration during the designing process. However, having regard to dynamic susceptibility of footbridges, not only users are a source of dynamic loading of these structures. Footbridges that carry pedestrians over roads may also be subjected to traffic-induced vibration transmitted onto the structures via the ground. It must be emphasized that the effect of this type of vibrations on footbridges, are still poorly recognized. Hence, the assessment of dynamic performance of footbridges under kinematic excitation seems to be essential in the light of increasing number of means of transport that are sources of considerable vibration.
Statistical interpretations about the use of footbridges by diverse groups of pedestrians in Malaysia
Published in Noor Amila Wan Abdullah Zawawi, Engineering Challenges for Sustainable Future, 2016
Road safety is one of the important issues that concerns transport developers all around the world. This issue is due to the increased vehicular units combined with the increased traveling demand, which resulted in a higher number of traffic accidents in many cities in the world, and have led to a horrible global number of 1.24 million road deaths per year (Organization, 2013). Out of this number, pedestrians formed 22% of annual fatalities, which called for responsible authorities to take the necessary actions in order to secure safety. These actions demonstrated by building friendly and suitable infrastructure for pedestrians, and by applying appropriate procedures to enhance their compliance with safe walking. One of the built structures is the footbridge, which has remarkable characteristics that secure absolute safety for people when crossing the street. Yet, this structure suffers from non-optimal performance resulting from non-compliance with pedestrians to use it. This risky traversing of the street will increase the proportion of accidents and the rate of road deaths, thus it will affect badly the free traffic flow. In this context, Abojaradeh (2013) discussed the importance of safety, where traffic accidents are considered as the second major cause of death in Amman, Jordan. The drawn results from this study stated that footbridges can increase the safety when the awareness of its benefits is available, especially for some pedestrians who do not obey the traffic law, where the severe congested streets lead to a tragically higher rate of danger. To find out the explanation of pedestrians’ behavior who dangerously crossed the street, the study of Sabet (2013) tried to test their fear of risk as a motive in preventing them to follow-up to do this behavior in the future. The study explained that the perception of risk was taken into account only when the respondent was not in a rush, where there is a comfort situation to decide which type of crossing he will perform. Therefore, the existence of risk is insufficient reason to urge people to more use of the footbridge when this risk is placed versus the pedestrian’s desire of saving time by crossing the street. In some countries, absence of safety culture is the main reason for performing such a risky behavior by pedestrians. This irresponsible behavior did not come from nowhere, but it stemmed from the cultural concepts which rule the house education for raising children before they become independent pedestrians (Arias Gallegos, 2012). This paper endeavors to identify the relation between pedestrians with different socioeconomic characteristics and different purpose of mobility, and their use of the footbridge. This was investigated by carrying out a field data collection from two footbridges in Ipoh city, Malaysia, and by distributing a questionnaire among pedestrians in the same area.
Adopting Robotic Systems to Enhance Vibration Control of Footbridges
Published in Structural Engineering International, 2018
Kevin Goorts, Sriram Narasimhan
Footbridges play a vital role in connecting one point to another for pedestrians in both dense urban areas and remote rural communities. For many years, function dominated form as the design of footbridges centered on achieving this goal. Recently however, an altered perception of footbridges has emerged wherein they are seen as focal points or landmark structures in the local community. This shift has placed considerable attention on the aesthetic aspects of footbridges, leading to innovative designs that often feature cable systems and lightweight materials such as aluminum. By nature, footbridges tend to be slender structures with low inherent damping and as such are governed by serviceability.1,2 The frequent use of lightweight materials—motivated by this push toward innovative design—has further increased the dynamic sensitivity of footbridges, thus presenting new challenges in attaining acceptable serviceability and user comfort levels.
A Stylised Footbridge Leading to Japanese Garden in Gryfice
Published in Structural Engineering International, 2018
Alicja Sołowczuk, Stanisław Kamiński, Jolanta Borucka-Lipska
The designer put forward a cheaper alternative – three-span structure, with steel girders, wood surface of the deck and timber guardrail,1 stylised to look similar to the railing used in the already existing Japanese bridges in the Japanese Garden (Fig. 2). Recently designed pedestrian footbridges often use steel load-bearing structures and timber decks. The footbridge used in Rzeszów (Poland) is an example of this type of structure.2 At the design stage, its designer analysed old, traditional Japanese bridges built in China, as that discussed in a paper.3