Seismic Effect on Highway Bridges in Chi Chi Earthquake

Hsu, Yao T.; Fu, Chung C.

doi:10.1061/(asce)0887-3828(2004)18:1(47)

Cited by 95 publications

(29 citation statements)

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Section: Instructionmentioning

confidence: 99%

“…Recent post-earthquake investigations indicate that a large number of bridge piers and structure columns with insufficient and poor seismic details are prone to shear failure, which may result in the overall collapse of bridges and structures under strong seismic attack [1][2][3][4].Studies of engineering practice demonstrate that RC columns under axial force, shear force and bending moment, usually exhibit three failure modes: flexural failure, shear failure and flexural-shear failure [5,6].Recently, considerable efforts have been made to investigate the seismic performance of RC columns, such as Lehman etc. [7], Xiao and Zhang [8], Si etc.…”

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Seismic Failure Modes and Deformation Capacity of Reinforced Concrete Columns under Cyclic Loads

Gong

2017

Period. Polytech. Civil Eng.

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InstructionReinforced concrete (RC) columns are one of the most critical load-bearing components in building structures, highway bridges and subsurface structures. Recent post-earthquake investigations indicate that a large number of bridge piers and structure columns with insufficient and poor seismic details are prone to shear failure, which may result in the overall collapse of bridges and structures under strong seismic attack [1][2][3][4].Studies of engineering practice demonstrate that RC columns under axial force, shear force and bending moment, usually exhibit three failure modes: flexural failure, shear failure and flexural-shear failure [5,6].Recently, considerable efforts have been made to investigate the seismic performance of RC columns, such as Lehman etc. [7], Xiao and Zhang [8], Si etc. [9]. The previous researches have primarily focused on the mechanism of flexural failure, and the fibre model can be used to simulate the flexural characteristic of columns. Brittle shear failure, which occurs before flexural yielding of the longitudinal reinforcement, can be easily identified for RC columns. However, the study of flexuralshear failure ("shear failure after yielding") is still inadequate due to flexure shear interaction. Lynn etc.[10] carried out reversed cyclic loading tests on eight full-scale RC columns, and found that predominant failure modes included flexuralshear failure, shear failure, lap-splice failure, and gravity load collapse, increasing axial load or longitudinal reinforcement ratio could lead to shear failure and lower ductility. Xiao and Martirossyan [11] found that the RC columns with insufficient confining reinforcement ratios could be dominated by flexural-shear failure in the plastic-hinge zones. Sezen [12] tested four full-scale lightly RC building columns to investigate the behaviour of columns with significant stiffness and strength degradation due to shear failure after the flexural strength (i.e. flexural-shear failure), and observed that under the same flexural demand and very high axial load, the specimen had a sudden shear and axial load failure. Si etc.[13] conducted quasi-static tests to study the seismic flexural-shear damage mechanisms and rapid repair techniques for earthquake damaged bridge piers. The failure pattern, strength, ductility and

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Section: Instructionmentioning

confidence: 99%

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confidence: 99%

Seismic Failure Modes and Deformation Capacity of Reinforced Concrete Columns under Cyclic Loads

Gong

2017

Period. Polytech. Civil Eng.

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“…Bridge pier column failure is also a common type of structural failure of bridges in earthquakes (Kawashima and Unjoh, 1997;Hsu and Fu, 2004). Single pier column is more vulnerable to failure than other components of bridge.…”

Section: Damage To Pier Columnsmentioning

confidence: 99%

Seismic damage of highway bridges during the 2008 Wenchuan earthquake

Han

Liu

et al. 2009

Earthq. Eng. Eng. Vib.

313

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Many highway bridges were severely damaged or completely collapsed during the 2008 Wenchuan earthquake.A fi eld investigation was carried out in the strongly affected areas and over 320 bridges were examined. Damage to some representative highway bridges is briefl y described and a preliminary analysis of the probable causes of the damage is presented in this paper. The most common damage included shear-fl exural failure of the pier columns, expansion joint failure, shear key failure, and girder sliding in the transversal or longitudinal directions due to weak connections between girder and bearings. Lessons learned from this earthquake are described and recommendations related to the design of curved and skewed bridges, design of bearings and devices to prevent girder collapse, and ductility of bridge piers are presented. Suggestions for future seismic design and retrofi tting techniques for bridges in moderate to severe earthquake areas are also proposed.

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“…Column damages, foundation collapses, settlement and rotation of abutments and fall of deck elements are, among others, frequent damage in bridges due to earthquakes. Descriptions of damage in bridges and their causes can be found in Astaneh-Asl et al (1994), Uang et al (1999), Kawashima (2002), Mohele and Eberhard (2003), Hsu and Fu (2004), Hashimoto et al (2005), Eshghi and Ahari (2005) and Jara et al (2006a). This paper presents the main results of the numerical analysis of two steel bridges: the Pinha˜o Bridge located in Portugal and the Infiernillo II Bridge located in Mexico.…”

Section: Introductionmentioning

confidence: 99%

Comparative structural response of two steel bridges constructed 100 years apart

Varum

Sousa

Delgado

et al. 2011

Structure and Infrastructure Engineering

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This paper presents a comparative numerical analysis of the structural behaviour and seismic performance of two existing steel bridges, the Infiernillo II Bridge and the Pinha˜o Bridge, one located in Mexico and the other in Portugal. The two bridges have similar general geometrical characteristics, but were constructed 100 years apart. Three-dimensional structural models of both bridges are developed and analysed for various load cases and several seismic conditions. The results of the comparative analysis between the two bridges are presented in terms of natural frequencies and corresponding vibration modes, maximum stresses in the structural elements and maximum displacements. The study is aimed at determining the influence of a 1 century period in material properties, transverse sections and expected behaviour of two quite similar bridges. In addition, the influence of the bearing conditions in the global response of the Pinha˜o Bridge was evaluated.

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Seismic Effect on Highway Bridges in Chi Chi Earthquake

Cited by 95 publications

References 1 publication

Seismic Failure Modes and Deformation Capacity of Reinforced Concrete Columns under Cyclic Loads

Seismic Failure Modes and Deformation Capacity of Reinforced Concrete Columns under Cyclic Loads

Seismic damage of highway bridges during the 2008 Wenchuan earthquake

Comparative structural response of two steel bridges constructed 100 years apart

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