A parametric study of seismic behavior of roller seismic isolation bearings for highway bridges

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
Yu-Chen Ou ◽  
Jianwei Song ◽  
George C. Lee
Keyword(s):  
Parametric Study ◽  
Seismic Behavior ◽  
Seismic Isolation ◽  
Highway Bridges

Parametric study of medium span bridges retrofitted with reinforced concrete jacketing

2019 ◽  
Vol 46 (7) ◽  
pp. 567-580
Author(s):  
J.M. Jara ◽  
O. Montes ◽  
B.A. Olmos ◽  
G. Martínez
Keyword(s):  
Reinforced Concrete ◽  
Parametric Study ◽  
Seismic Behavior ◽  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Limit State ◽  
Highway Bridges ◽  
Main Emphasis ◽  
Seismic Forces ◽  
Bridge Models

Most reinforced concrete (RC) bridges in many countries are medium-span length structures built in the last decades and designed for very low seismic forces. The evolution of seismic codes and the average age of the bridges require the evaluation of their seismic vulnerability. This study assesses the expected capacity, demand and damage of seismically deficient medium-length highway bridges, supported in frame-type piers using dynamic nonlinear methodologies. A parametric study of reinforced concrete retrofitted bridges with RC jacketing was conducted. The non-retrofitted structures are 30 m span simple supported bridges with pier heights in the range of 5–25 m. The main emphasis of the study is the assessment of the jacket parameters’ contribution to the seismic vulnerability of bridges. Particularly, it is quantified how jacket thickness and reinforcement ratio affect the probability of reaching a particular damage limit state. The retrofitted scheme includes three jacket thicknesses and three different longitudinal steel ratios. The results evaluate bridge demands and fragility curves to quantify the influence of RC jacketing on the seismic response of structures and allow to select the best jacket parameters that improve the expected seismic behavior of the bridge models. Additionally, the influence of model hysteresis degradation on the expected damage of retrofitted bridges was also determined.

Seismic behavior of reinforced concrete sacrificial exterior shear keys of highway bridges

2017 ◽  
Vol 139 ◽  
pp. 59-70 ◽  
Author(s):  
Qiang Han ◽  
Yulong Zhou ◽  
Yuchen Ou ◽  
Xiuli Du
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Highway Bridges ◽  
Shear Keys

Parametric study of the ductility capacity in common highway bridges

2016 ◽  
pp. 389-389
Author(s):  
M.C. Gómez-Soberón ◽  
A. Ayala-Contreras ◽  
G. Mendoza-García ◽  
L. Gómez-Soberón
Keyword(s):  
Parametric Study ◽  
Highway Bridges ◽  
Ductility Capacity

Modeling and Parametric Study of Cover Plate Strengthen-Beam Flange Weaken Beam-to-Column Connection for Steel Moment Frame

2011 ◽  
Vol 368-373 ◽  
pp. 1217-1221
Author(s):  
Yan Xia Zhang ◽  
Yun Peng Li ◽  
Lu Yao Wang ◽  
Fan Yang
Keyword(s):  
Finite Element ◽  
Parametric Study ◽  
Seismic Behavior ◽  
Steel Structures ◽  
Cover Plate ◽  
Finite Element Analyses ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Theoretical Analyses

Based on the previous experiments and theoretical analyses, finite element analyses (FEA) and parametric study on seismic behavior of Cover Plate Strengthen-Beam Flange Weaken Beam-to-Column (CPSBFW) connection are executed by using ABAQUS. Suggestions on design conceptions and details of the cover plate strengthen-beam flange weaken beam-to-column connection are presented in this paper, and that provide valuable reference for design of beam-to-column connections in steel structures.

Seismic Isolation Design Code for Highway Bridges

2002 ◽  
Author(s):  
Kazuhiko Kawashima ◽  
Shigeki Unjoh
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Seismic Isolation ◽  
Highway Bridges ◽  
Design Code ◽  
Basic Principles ◽  
Design Specifications

This paper presents the seismic isolation design code for highway bridges. This is based on the 1996 Design Specifications for Highway Bridges, Part. V: Seismic Design, issued by the Japan Road Association in December 1996. This paper focuses on the outlines of the seismic isolation design code including the seismic design basic principles, design ground motion, and seismic isolation design.

Parametric study on the Multangular-Pyramid Concave Friction System (MPCFS) for seismic isolation

2020 ◽  
Vol 14 (5) ◽  
pp. 1152-1165
Author(s):  
Wei Xiong ◽  
Shan-Jun Zhang ◽  
Li-Zhong Jiang ◽  
Yao-Zhuang Li
Keyword(s):  
Parametric Study ◽  
Seismic Isolation

Seismic Investigation of Steel Pile Bents: I. Evaluation of Performance

2002 ◽  
Vol 18 (1) ◽  
pp. 121-142 ◽  
Author(s):  
Ayman A. Shama ◽  
John B. Mander ◽  
Blaise A. Blabac ◽  
Stuart S. Chen
Keyword(s):  
Seismic Behavior ◽  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Ground Motions ◽  
Highway Bridges ◽  
Companion Paper ◽  
Experimental Program ◽  
Evaluation Of Performance ◽  
The Subject ◽  
Overall Performance

The main objective of this study is to assess the seismic vulnerability of a class of highway bridges existing in certain regions of the eastern and central states, where steel H-piles extends out of the soil to support the pier cap. During severe ground motions, the overall performance of the bridge will be governed by the local performance of the pile-to-cap beam connection. The scope of work was divided into several tasks as follows: (1) a theory was developed to predict the performance of the connection under lateral loading; (2) an initial experimental program was conducted to investigate the seismic behavior of the steel bents; (3) a retrofit strategy is proposed; (4) a second experimental study was carried out to validate the proposed retrofit method; and (5) fragility curves for such structures were developed. This paper deals with the first two tasks of the study. The other three tasks are the subject of a second companion paper (Shama 2002).

Influence of the use of external shear keys on the seismic behavior of Chilean highway bridges

2017 ◽  
Vol 147 ◽  
pp. 613-624 ◽  
Author(s):  
José de Jesús Wilches Están ◽  
Hernán Santa María ◽  
Rafael Riddell ◽  
Carlos Arrate
Keyword(s):  
Seismic Behavior ◽  
Highway Bridges ◽  
Shear Keys

Characterization of a Roller Seismic Isolation Bearing with Supplemental Energy Dissipation for Highway Bridges

2010 ◽  
Vol 136 (5) ◽  
pp. 502-510 ◽  
Author(s):  
George C. Lee ◽  
Yu-Chen Ou ◽  
Tiecheng Niu ◽  
Jianwei Song ◽  
Zach Liang
Keyword(s):  
Energy Dissipation ◽  
Seismic Isolation ◽  
Highway Bridges
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