Highway bridge seismic design: Summary of FHWA/MCEER project on seismic vulnerability of new highway construction

2002 ◽  
Vol 1 (1) ◽  
pp. 10-19
Author(s):  
Ian M. Friedland ◽  
Ian G. Buckle ◽  
George C. Lee
Keyword(s):  
Seismic Design ◽  
Seismic Vulnerability ◽  
Highway Construction ◽  
Highway Bridge

Highway Bridge Seismic Design: How Current Research May Affect Future Design Practice

2000 ◽  
Vol 1696 (1) ◽  
pp. 209-215
Author(s):  
Ian M. Friedland ◽  
Ronald L. Mayes ◽  
W. Phillip Yen ◽  
John O’Fallon
Keyword(s):  
Seismic Design ◽  
Earthquake Engineering ◽  
Seismic Vulnerability ◽  
Highway Bridges ◽  
Highway Bridge ◽  
Design Practice ◽  
Engineering Research ◽  
Future Design ◽  
Design Specifications ◽  
The Impact

Under several contracts sponsored by FHWA, the Multidisciplinary Center for Earthquake Engineering Research has been conducting a research program on highway structure seismic design and construction. Among its objectives, the program studies the seismic vulnerability of highway bridges, tunnels, and retaining structures and develops information that could be used, in the case of bridges, to revise current national design specifications. A specific requirement of the program is to have research results independently reviewed and assessed to determine the impact they may have on future seismic design specifications for highway structures. Some of the important results of the research that has been conducted under the program are summarized, and issues that resulted from this impact assessment about expected changes in future seismic design practice of highway bridges are discussed.

Seismic Safety Evaluation for Mountainous Highway Bridge Based on Risk Matrix

2011 ◽  
Vol 255-260 ◽  
pp. 4212-4216
Author(s):  
Gong Yuan Xie ◽  
Zhang Yue
Keyword(s):  
Seismic Design ◽  
Seismic Risk ◽  
Control Method ◽  
Safety Evaluation ◽  
Technical Support ◽  
Highway Bridge ◽  
Risk Matrix ◽  
Seismic Safety ◽  
Seismic Safety Evaluation

Risk matrix is applied to evaluate seismic risk on mountainous bridge. In this article, a continuous bridge is used as example to analyze the seismic risk of key position under a usual earthquake. Related control method is proposed to provide technical support for bridge seismic design and operation maintenance.

scholarly journals Research on Seismic Vulnerability of Continuous Beam Bridges Based on Incremental Dynamic Analysis Method

2020 ◽  
Vol 198 ◽  
pp. 02026
Author(s):  
Peizhi Wang
Keyword(s):  
Seismic Performance ◽  
Seismic Design ◽  
Seismic Vulnerability ◽  
Analysis Method ◽  
Limit States ◽  
Limit Values ◽  
Vulnerability Curve ◽  
Displacement Ductility ◽  
Girder Bridges ◽  
Multi Stage

The seismic vulnerability of highway continuous girder bridges is analyzed to provide theoretical basis for the study of multi-stage fortification and seismic design of such bridges. Based on the concept of performance seismic design, five performance levels of structures are determined, and the displacement ductility ratio of piers is taken as the performance quantitative index to calculate the damage limit values of bridges in different limit states. On this basis, IDA analysis method is used to calculate 20 subjects. Based on the reliability theory, logarithmic regression fitting analysis is carried out to obtain the seismic vulnerability curve. The theoretical vulnerability curve is indicated that the bridge has good comprehensive seismic performance. Under 0.3 g ground motion, the probability of minor damage, moderate damage and serious damage are 57.9%, 44.7% and 3.6% respectively. The comprehensive seismic performance of bridges and the probability of exceeding the damage status at all levels are reflected in the results, the guiding significance to analysis of the seismic performance of the entire traffic and the formulation of emergency rescue plans.

Problems and Suggestions of Chinese Highway Bridge Seismic Design

2013 ◽  
Vol 574 ◽  
pp. 127-134
Author(s):  
Xiu Yun Gao ◽  
Shao Yi Zhang
Keyword(s):  
Seismic Design ◽  
Response Spectrum ◽  
Highway Bridges ◽  
Developed Countries ◽  
The United States ◽  
Highway Bridge ◽  
Design Codes ◽  
New Codes ◽  
Single Standard ◽  
The Developed Countries

The seismic design of Chinese Highway Bridge changed from single standard of fortification and one-step design performed nearly two decades to two-level fortification and two-stage design with the introduction of the new codes in 2008 and 2011. However, there are some shortcomings of the new codes such as the choice of response spectrum type, the determination of reinforced concrete constitutive relation, the discrimination of site-type and the bearing checking items, which leave a large room for improvement. Combined with the design codes of the developed countries like Japan and the United States, some useful suggestions are put forward in this paper for Chinese existing design codes. It is believed that Chinese seismic levels can be significantly increased so long as highway bridges are designed in accordance with the improved codes.

Effect of Pile-Soil Action on Seismic Resistance of Prestressed Continuous Box-Girder Bridge with Changed Sections

2012 ◽  
Vol 238 ◽  
pp. 743-747 ◽  
Author(s):  
Feng Lan Li ◽  
Shi Min Zhang ◽  
Shi Ming Liu
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Prestressed Concrete ◽  
Numerical Models ◽  
Response Spectrum ◽  
Seismic Resistance ◽  
Highway Bridge ◽  
Box Girder ◽  
Internal Forces ◽  
Girder Bridge

Combined with the design of a bridge with prestressed concrete continuous box-girder, and in accordance with the Chinese guidelines of seismic design for highway bridge, the numerical models with and without considering the pile-soil action were built using Midas Civil software. The response spectrum method was used to analyze the seismic response of the bridge under E1 and E2 seismic actions. The vibration characteristics such as frequency, period and mode as well as the internal forces and displacements of piers are discussed in view of the effect of the pile-soil action.

STUDY ON THE SEISMIC VULNERABILITY OF A VIADUCT SUBJECTED TO NEAR-FAULT GROUND MOTIONS

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Yong Li ◽  
Mengfei Xie ◽  
Lijun Meng
Keyword(s):  
Seismic Design ◽  
Seismic Vulnerability ◽  
Shear Failure ◽  
Ground Motions ◽  
Plastic Hinge ◽  
Design Guidelines ◽  
Severe Damage ◽  
Seismic Excitations ◽  
Near Fault ◽  
Bridge System

Piers, abutments and bearings of viaducts may suffer severe damage during earthquakes, so it's not insufficient to evaluate the seismic vulnerability of a bridge system only by plastic hinge curvature, which is adopted in seismic design guidelines. In this paper, the seismic vulnerability evaluation of a viaduct is conducted by incremental dynamic analysis under 30 near-fault ground motions, which are selected from PEER database. Then several damage measures are recommended to make an overall estimation for the seismic vulnerability of the viaduct, including plastic hinge curvature, shear failure and sliding displacement failure of bearings and pounding force between abutments and the girder. The analysis results show that the transversal seismic excitations may lead to more severe damage than the longitudinal ground motions. No matter in which direction the ground motions are inputted, the bearings' seismic vulnerability resulted by shear force or sliding displacement is higher than the plastic hinge of piers, which indicates that the seismic vulnerability of the bridge system is determined by the bearings to an extent. As a result, bearings should be designed according to both static and seismic analyses to guarantee the safety during earthquakes.

Seismic Vulnerability of Highway Bridge Embankments

2006 ◽  
Vol 1976 (1) ◽  
pp. 126-137
Author(s):  
Wael A. Zatar ◽  
Issam E. Harik ◽  
Kevin G. Sutterer
Keyword(s):  
Seismic Vulnerability ◽  
Highway Bridge
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