Seismic Investigation of Steel Pile Bents: II. Retrofit and Vulnerability Analysis

2002 ◽  
Vol 18 (1) ◽  
pp. 143-160 ◽  
Author(s):  
Ayman A. Shama ◽  
John B. Mander ◽  
Stuart S. Chen
Keyword(s):  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Vulnerability Analysis ◽  
Experimental Results ◽  
Experimental Program ◽  
Seismic Investigation ◽  
Seismic Vulnerability Analysis ◽  
Plastic Steel

This paper is the second of a two-part study on the seismic vulnerability of deck bridges supported on steel pile bents. A conceptual elastic cap/elasto-plastic steel pile retrofit strategy is proposed in this part with the aim of strengthening the connection and ensuring plastification takes place only in the steel pile. An experimental program was carried out to assess the retrofit strategy. On the basis of the experimental results for existing as well as retrofitted connections, a seismic vulnerability analysis for bridges supported by steel pile bents was performed. Fragility curves for such structures were developed using a simplified fundamental mechanics-based approach. The study showed that the retrofitted connections exhibited superior energy absorptions with respect to the existing connections. Fragility curves also demonstrated the effectiveness of the retrofit strategy proposed.

scholarly journals Seismic vulnerability analysis in Poso Distric

2021 ◽  
Vol 1763 (1) ◽  
pp. 012015
Author(s):  
M Rusydi ◽  
M B Cyio ◽  
Rahmawati ◽  
Ramlan
Keyword(s):  
Seismic Vulnerability ◽  
Vulnerability Analysis ◽  
Seismic Vulnerability Analysis

Seismic Investigation of Steel Pile Bents: I. Evaluation of Performance

2002 ◽  
Vol 18 (1) ◽  
pp. 121-142 ◽  
Author(s):  
Ayman A. Shama ◽  
John B. Mander ◽  
Blaise A. Blabac ◽  
Stuart S. Chen
Keyword(s):  
Seismic Behavior ◽  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Ground Motions ◽  
Highway Bridges ◽  
Companion Paper ◽  
Experimental Program ◽  
Evaluation Of Performance ◽  
The Subject ◽  
Overall Performance

The main objective of this study is to assess the seismic vulnerability of a class of highway bridges existing in certain regions of the eastern and central states, where steel H-piles extends out of the soil to support the pier cap. During severe ground motions, the overall performance of the bridge will be governed by the local performance of the pile-to-cap beam connection. The scope of work was divided into several tasks as follows: (1) a theory was developed to predict the performance of the connection under lateral loading; (2) an initial experimental program was conducted to investigate the seismic behavior of the steel bents; (3) a retrofit strategy is proposed; (4) a second experimental study was carried out to validate the proposed retrofit method; and (5) fragility curves for such structures were developed. This paper deals with the first two tasks of the study. The other three tasks are the subject of a second companion paper (Shama 2002).

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