International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 03 | Mar 2024
p-ISSN: 2395-0072
www.irjet.net
A Review on To Evaluate Behavior of Bridge for Varying Pier Height and Span Using Dynamic and Analytic Techniques. Mr. Gurgule Raviraj Uttam 1, Mr. Pawar Yashwant Prabhakar2, Mr. Lakade Ganesh Dhareshwar3 PG Student at Dept. of Civil Engineering, SKN Sinhgad College of Engineering, Korti, Pandharpur, Maharashtra, India .2Assistant Professor, Dept. of Civil Engineering, SKN Sinhgad College of Engineering, Korti, Pandharpur, Maharashtra, India. 3Assistant Professor, Dept. of Civil Engineering, SKN Sinhgad College of Engineering, Korti, Pandharpur, Maharashtra, India. ---------------------------------------------------------------------------***---------------------------------------------------------------------Abstract— One of the most crucial components of an sustain. The kind of support, relative stiffness, and stability 1
integrated transportation system is a bridge, and having one in the case of an earthquake is crucial to everyone's safety. The management group started investigating various techniques for constructing bridges under seismic stresses in order to prevent bridge collapse. They are vital to a city or region's economy because they make it possible for first responders to get to them in the event of a seismic catastrophe. Because of its affordability, ease of use, and durability, reinforced concrete (RC) bridges are the most often utilised kind of bridges globally. In fact, a lot of research focuses on how they behave while under seismic stress. This study looks at how various structural characteristics, such as height and kind of continuous rock, affect the seismic reaction. As a result, several models of continuous girder multi-span bridges with various geometric characteristics are considered.
Keyword: Bridges, SAP2000, Time History, Response Spectrum, Unequal Pier.
1. INTRODUCTION Consideration for seismic stresses is sometimes lacking in the design and construction of bridges. Furthermore, as long as the models function within the elastic limit, linear elastic models employed for bridge measurements are still valid. The elastic system is insufficient to assess the model if it responds in excess of the elastic limit. This causes an overestimation of how much seismic force the building can absorb. As of right now, engineers are not able to assess the current bridges or their strengthening using any kind of generic guidelines.
1.1. Bridge Pier The purpose of the bridge's piers is to sustain the loads on the superstructure and move them to the foundation. Wind loads, water pressure, and impacts from vehicles are just a few examples of the vertical and horizontal loads they can
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Impact Factor value: 8.226
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and expansion of the support arrangement of each pier will all depend on the superstructure loads applied to it.
Uneven footed bridges are those that are supported by piers that vary in height. Such bridges supported by uneven piers require complicated and challenging earthquake design. There are two types of special piers: long piers and short piers, like bridges. A column is considered short when its length to minimum length ratio is less than 12, while a line is considered long when its length to minimum length ratio is greater than 12. This example demonstrates that small struts typically lead to brittle shear failure, hence reducing their ductility, whereas long struts typically break in the ductile bending mode.
2. STATE OF DEVELOPMENT Camilo Perdomo, et. al. (2017) The study investigated four iterations of the algorithm and changed the original GPA used in buildings for the bridge model. By comparing the irregular outcomes with the "winning" result, two straight lines with various horizontal and vertical irregularities are utilized as research data to validate the procedure and assess the GPA algorithm's correctness. Approximation from NTHA. The target spectrum's reflection time, which varies according to seismic danger, will be considered when assessing the method's accuracy for both low and high seismic demand. Furthermore, the GPA outcomes were contrasted with the commonly utilized NSP (volumetric spectroscopy). The case study's findings demonstrate that the bridge GPA algorithm is a more accurate predictor of NSP alternatives and is appropriate as the NSP technique for seismic evaluation of bridge structures. It also shows high agreement with NTHA results. Themelina S. Paraskeva and Andreas J. Kappos, et.al. (2009) The fundamental concept is to substitute a suitable deformation model that provides an elastic response during
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