Journal ArticleDOI
Seismic damage of highway bridges during the 2008 Wenchuan earthquake
TLDR
In this paper, a field investigation was carried out in the strongly affected areas and over 320 bridges were examined, and the most common damage included shear-flexural failure of the pier columns, expansion joint failure, shear key failure, and girder sliding in the transversal or longitudinal directions.Abstract:
Many highway bridges were severely damaged or completely collapsed during the 2008 Wenchuan earthquake. A field investigation was carried out in the strongly affected areas and over 320 bridges were examined. Damage to some representative highway bridges is briefly described and a preliminary analysis of the probable causes of the damage is presented in this paper. The most common damage included shear-flexural 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 retrofitting techniques for bridges in moderate to severe earthquake areas are also proposed.read more
Citations
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Review of ultra-high performance concrete and its application in bridge engineering
TL;DR: In this paper, a comprehensive review of the properties of UHPC and its application in bridge engineering is provided, including jointed and jointless bridge components, such as piers, girders, decks, and link slabs.
Journal ArticleDOI
Optimal design of superelastic‐friction base isolators for seismic protection of highway bridges against near‐field earthquakes
TL;DR: In this article, the seismic response of a multi-span continuous bridge with a novel superelastic-friction base isolator (S-FBI) is investigated under near-field earthquakes.
Journal ArticleDOI
Seismic assessment of bridge structures isolated by a shape memory alloy/rubber-based isolation system
TL;DR: In this article, the effectiveness of shape memory alloy (SMA)/rubber-based isolation systems for seismic protection of bridges against near-field earthquakes by performing a sensitivity analysis was explored.
Journal ArticleDOI
Hysteretic behavior investigation of self-centering double-column rocking piers for seismic resilience
TL;DR: In this paper, an improved analytical model was proposed for predicting the force-displacement relationship of the post-tensioned rocking bridge bent systems considering the neutral axis depth.
Journal ArticleDOI
Performance of an innovative self-centering buckling restrained brace for mitigating seismic responses of bridge structures with double-column piers
TL;DR: In this article, a self-centering buckling restrained brace (SC-BRB) consisting of a selfcentering system and a traditional BRB system is developed to minimize the residual deformations of the structures with traditional BRBs, which exhibits flag-shaped hysteresis response with a small residual deformation and a moderate energy dissipation capability.
References
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Book
Seismic Design and Retrofit of Bridges
TL;DR: In this article, the authors focus on designing adequate displacement and ductility capacity into new bridges, with less significance placed on strength, where a strength hierarchy is established in a bridge to ensure that damage is controllable and occurs only where the designer intends.
Journal ArticleDOI
Strong motion observations and recordings from the great Wenchuan Earthquake
TL;DR: The National Strong Motion Observation Network System (NSMONS) as discussed by the authors consists of permanent free-field stations, special observation arrays, mobile observatories and a network management system.
Journal ArticleDOI
Seismic Effect on Highway Bridges in Chi Chi Earthquake
Yao T. Hsu,Chung C. Fu +1 more
TL;DR: In this paper, the authors reported the bridge damage in the Chi Chi earthquake and illustrated typical types of damage, which may occur in the superstructure, the substructure, or the approaches.
Journal ArticleDOI
The Damage of Highway Bridges in the 1995 Hyogo-Ken Nanbu Earthquake and its Impact on Japanese Seismic Design
Kazuhiko Kawashima,Shigeki Unjoh +1 more
TL;DR: The Hyogo-ken Nanbu Earthquake of 17 January 1995, caused destructive damage to highway bridges as discussed by the authors, which was the first experience of such destructive damage since the Great Kanto Earthquake of 1923.
Journal ArticleDOI
Seismic assessment and retrofit of bridge column footings
TL;DR: In this paper, theoretical and experimental studies related to seismic evaluation and retrofit of bridge column footings were described and tested under simulated seismic actions, showing that column/footing joint shear failure is a potential danger to existing bridge structures.