A simplified normalized multi-mode nonlinear static procedure (NMP) for seismic performance evaluation of building structures

2021 ◽  
Author(s):  
Mohamad Zarrin ◽  
Aydin Daei ◽  
Tooraj Heydary
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Building Structures ◽  
Seismic Performance Evaluation ◽  
Nonlinear Static Procedure ◽  
Nonlinear Static ◽  
Multi Mode

scholarly journals Special Issue on Advanced Methods for Seismic Performance Evaluation of Building Structures

2020 ◽  
Vol 10 (20) ◽  
pp. 7353
Author(s):  
Sang Whan Han
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Building Structures ◽  
Special Issue ◽  
Large Area ◽  
Seismic Performance Evaluation ◽  
Seismic Engineering ◽  
Seismic Regions ◽  
Moderate Seismic Regions ◽  
Great Damage

When an earthquake occurs, it causes great damage to a large area. Although seismic engineering continues to develop, it is reported that recently occurred earthquakes inflicted major damage to various structures and loss of human lives. Such earthquake damage occurs in high seismic regions as well as low to moderate seismic regions. This special issue contains topics on newly developed technologies and methods for seismic performance evaluation and seismic design of building structures.

Seismic Performance Evaluation of Fixed Steel Jacket Platforms Retrofitted With Buckling Restrained Braces

2011 ◽  
Author(s):  
Mohamed Nour El-Din ◽  
JinKoo Kim
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Seismic Retrofit ◽  
Gulf Of Thailand ◽  
Offshore Platforms ◽  
Building Structures ◽  
Seismic Performance Evaluation ◽  
Buckling Restrained Braces ◽  
Jacket Structures ◽  
Potential Failure

In recent years there have been significant developments in seismic retrofit of building structures. For steel off-shore jacket structures, however, researches on the seismic performance evaluation and retrofit are relatively rare. In this study, the advantages of using Buckling-Restrained Braces (BRBs) in offshore jacket structures and its effect on the seismic performance of the platform are highlighted. The potential failure mechanisms of the structures using both normal braces and BRBs under seismic loads were investigated first. Pushover analyses of fixed jacket offshore platforms comprising the most common types of the platforms in practice were conducted. In those model structures, two different schemes of BRB retrofitting were utilized and compared with the normal bracing case. After that, an example for the seismic assessment of an existing 8 legged service platform located in the Gulf of Thailand was investigated. The model was designed based on loads according to the environmental conditions in Gulf of Thailand. Different retrofitting schemes using normal braces were investigated to improve the seismic performance of the structure and the results were compared with the results of the seismic retrofit using BRBs. The analysis results showed that the seismic performances of the jacket structures were greatly improved when bracing members were replaced with BRBs compared to the case with using normal bracing. Numerical results revealed that the plastic hinges were more uniformly distributed over the structures in case of retrofit using BRB, while they were concentrated at the top of the structures when normal bracings were used.

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