Pounding Effects on Bridges during Extreme Earthquakes
Current time: 05-22-2018, 07:14 AM
Users browsing this thread: 1 Guest(s)
Author: TAFATNEB
Last Post: TAFATNEB
Replies 0
Views 925

Pounding Effects on Bridges during Extreme Earthquakes
#1
Pounding Effects on Bridge s during Extreme Earthquakes

Author: Tzu-Ying Lee 1, Kai-Tien Chen 1, Chun-Chuan Su 1 1Department of Civil Engineering, National Central University, No.300, Jhongda Road, Jhongli, Taiwan | Size: 486 KB | Format: PDF | Quality: Unspecified | Publisher: Proceedings of the 8th International Conference on Structural Dynamics, EURODYN 2011 Leuven, Belgium, 4-6 July 2011 G. De Roeck, G. Degrande, G. Lombaert, G. M¨uller (eds.) | Year: 2011 | pages: 06 | ISBN: 978-90-760-1931-4

[Image: 55571802517378257533.jpg]


[Image: info.png]

In the past extreme earthquakes, a number of bridges suffered damage with unseating of superstructures.
Whenever unseating failure occurs, local cracking or crushing due to pounding between superstructures can be observed in the
sites. Therefore, this paper is aimed to study pounding effect on isolated bridges in ultimate situation through numerical analysis.
The Vector Form Intrinsic Finite Element (VFIFE) is superior in managing the engineering problems with material nonlinearity,
discontinuity, large deformation, large displacement and arbitrary rigid body motions of deformable bodies. The VFIFE is thus
selected to be the analysis method in this study. Since the VFIFE is in its infant stage of development, there are still a number of
elements to be developed. Three types of impact models are developed for VFIFE to simulate the pounding effect. The
developed impact elements are verified to be accurate by a model comprising two SDOF systems. Two adjacent single-span
isolated bridges are then analyzed to study the pounding effect under extreme earthquakes. The results show insignificant
difference of the pounding effect by any impact model with or without energy dissipation. It is interesting to observe that the
column ductility demand remains identical regardless of the strength of unseating prevention device. The larger the mass ratio of
the two adjacent decks, the larger the intensity of the ground motion the column reaches its ultimate ductility.

[Image: download.png]
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************



[-] The following 8 users say Thank You to TAFATNEB for this post:
  • slowet, vardan, PinkPant, amindoxiti, gulilero, zrilek, malc, cace-01
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
Development of pounding model for adjacent structures in earthquakes TAFATNEB 0 921 08-14-2014, 09:18 AM
Last Post: TAFATNEB
Pounding between base-isolated and fixed-base RC buildings during earthquakes TAFATNEB 0 795 08-14-2014, 08:52 AM
Last Post: TAFATNEB
Effects of earthquakes on dams and embankments hrezaei 3 2,417 04-16-2012, 11:02 AM
Last Post: mybest



Users browsing this thread: 1 Guest(s)