Seismic spatial effects on dynamic response of long-span bridges in stationary inhomogeneous random fields

2004 ◽  
Vol 3 (2) ◽  
pp. 171-180 ◽  
Author(s):  
Lin Jiahao ◽  
Zhang Yahui ◽  
Zhao Yan
Keyword(s):  
Dynamic Response ◽  
Random Fields ◽  
Spatial Effects ◽  
Long Span Bridges ◽  
Long Span

Aeroelastic forces and dynamic response of long-span bridges

2004 ◽  
Vol 60 (6) ◽  
pp. 1011-1048 ◽  
Author(s):  
Massimiliano Lazzari ◽  
Renato V. Vitaliani ◽  
Anna V. Saetta
Keyword(s):  
Dynamic Response ◽  
Long Span Bridges ◽  
Long Span

Vehicle-Induced Dynamic Response of Expansion Joints in Long Span Bridges

2014 ◽  
Vol 584-586 ◽  
pp. 2117-2120
Author(s):  
Zhen Sun ◽  
Yu Feng Zhang
Keyword(s):  
Dynamic Response ◽  
Newmark Method ◽  
Expansion Joint ◽  
Expansion Joints ◽  
Long Span Bridges ◽  
Finite Element Software ◽  
Long Span ◽  
Vehicle Impact ◽  
Vehicle Loading ◽  
Analysis Scheme

Due to increasing traffic on long span bridges, behavior of expansion joints is believed to be largely influenced by pounding impact from passing vehicles. In order to precisely understand behavior of expansion joint under vehicle impact loading, a new analysis scheme is proposed which incorporates interaction between vehicle and expansion joint. Mathematical model of vehicle is established and solved with Newmark method. Expansion joint is modeled with refined solid element in Finite element software ABAQUS. The analysis indicates that vehicle loading can induce large dynamic response of expansion joint in long span bridges.

scholarly journals Dynamic response of long-span bridges subjected to nonuniform excitation: a state-of-the-art review

2019 ◽  
Vol 258 ◽  
pp. 05017
Author(s):  
Seplika Yadi ◽  
Bambang Suhendro ◽  
Henricus Priyosulistyo ◽  
Akhmad Aminullah
Keyword(s):  
Dynamic Response ◽  
State Of The Art ◽  
Ground Motions ◽  
Experimental Studies ◽  
Suspension Bridges ◽  
Long Span Bridges ◽  
Long Span ◽  
Numerical Studies ◽  
Multiple Support ◽  
Support Excitation

In recent years, considerable attention has been paid to the research of dynamic response of long-span bridges with particular emphasis on seismic behavior. Cable-stayed and suspension bridges are the most popular types. Since long-span bridges have multi-supports and extreme lengths, due to the spatial variation effects, the ground motions at different supports might be non-uniform. A state-of-the-art update review of the response of long-span bridges subjected to non-uniform excitation is presented. The review mainly focuses on the theoretical aspects of non-uniform excitation, numerical studies, and experimental studies to verify some of the theoretical findings. In this paper, a review of the use of shake-table in experimental studies of long-span bridges is also presented. The non-uniform cases considered include a time delay with the same support excitations, multiple support excitations, and the combination of the first and the later. The results are discussed and summarized in comparison to the cases of uniform support excitation.

scholarly journals Analysis of the dynamic response of long span bridges with GNSS under typhoon loading

2021 ◽  
Vol 4 (3) ◽  
pp. Manuscript
Author(s):  
Hongbo Wang ◽  
Xiaolin Meng ◽  
Chaohe Chen
Keyword(s):  
Dynamic Response ◽  
Real Time ◽  
Deformation Monitoring ◽  
Bridge Management ◽  
Time Data ◽  
Engineering Structures ◽  
Long Span Bridges ◽  
Long Span ◽  
Long Span Bridge ◽  
Cross Correlation Analysis

Nowadays, real-time bridge deformation monitoring has attracted more attention due to the development of bridge management system and land transportation safety. Huge civil engineering structures, such as long-span bridge, is susceptible to dynamic deflection caused by various loadings. Hence, precise dynamic response measurement becomes necessary to make structure more reliable and integrated. Currently, Global Navigation Satellite System (GNSS) positioning technology has been commonly used in this field to detect the dynamic displacement of long-span bridges. According to this, real-time data were collected from the Forth Road Bridge to observe the dynamic response of lang span bridges under extreme wind load conditions and this report has also verified the data processing technique of the real-time bridge deformation monitoring system. Compared with other monitoring methods, the method used in this report which combines GNSS and anemometer together has features of high frequency with low lag. Moreover, it also shows the superiority of post-processing and synchronization, background noises could be reduced by embedded software. Finally, according to the cross-correlation analysis, it was found that wind speed and bridge displacement in y-axis have the highest correlation. Also, the reliability of combining method to monitor the dynamic response of long-span bridge and noise reducing method proposed in this report has also been verified.

Non Linear Dynamic Response of Long-Span Bridges

2002 ◽  
Vol 86 (16) ◽  
pp. 166-177
Author(s):  
Massimiliano Lazzari ◽  
Anna Saetta ◽  
Renato Vitaliani
Keyword(s):  
Dynamic Response ◽  
Long Span Bridges ◽  
Linear Dynamic ◽  
Long Span ◽  
Non Linear
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