scholarly journals Nonlinear seismic response reconstruction and performance assessment of instrumented wood‐frame buildings—Validation using NEESWood Capstone full‐scale tests

2019 ◽  
Vol 26 (9) ◽  
Author(s):  
Milad Roohi ◽  
Eric M. Hernandez ◽  
David Rosowsky
Keyword(s):  
Performance Assessment ◽  
Seismic Response ◽  
Full Scale ◽  
Nonlinear Seismic Response ◽  
Frame Buildings ◽  
Response Reconstruction ◽  
Wood Frame ◽  
And Performance ◽  
Full Scale Tests

An experimental investigation of retrofitted cripple walls

1991 ◽  
Vol 81 (5) ◽  
pp. 2111-2126
Author(s):  
R. Shepherd ◽  
E. O. Delos-Santos
Keyword(s):  
Experimental Investigation ◽  
Full Scale ◽  
Contributory Factor ◽  
Cyclic Loads ◽  
Loma Prieta Earthquake ◽  
Damping Characteristics ◽  
Frame Buildings ◽  
Loma Prieta ◽  
Wood Frame ◽  
Extensive Damage

Abstract Extensive damage was experienced by wood-frame buildings during the Loma Prieta earthquake. A significant contributory factor was the collapse of cripple walls. This prompted the examination of the behavior of a group of full-scale retrofitted cripple walls subjected to in-plane cyclic loads. The results of investigating seven cripple walls, each 2 ft (0.61 m) high and 16 ft (5 m) long, are presented. Two are control panels, without retrofits. Two are strengthened with 1 by 6 inch (25.4 by 153 mm) braces. Two are retrofitted with 0.5 inch (12.7 mm) plywood and one with a steel strap tie. Stiffness, strength, and damping characteristics are summarized, together with cost aspects. It is shown that relatively cheap and straightforward modifications can substantially eliminate the vulnerability of many existing cripple walls to earthquake shaking.

Full-Scale Experimental Verification of Soft-Story-Only Retrofits of Wood-Frame Buildings using Hybrid Testing

2014 ◽  
Vol 19 (3) ◽  
pp. 410-430 ◽  
Author(s):  
Elaina Jennings ◽  
John W. van de Lindt ◽  
Ershad Ziaei ◽  
Pouria Bahmani ◽  
Sangki Park ◽  
...  
Keyword(s):  
Experimental Verification ◽  
Full Scale ◽  
Hybrid Testing ◽  
Soft Story ◽  
Frame Buildings ◽  
Wood Frame

Fatigue Resistant Threaded and Coupled Connectors for Deepwater Riser Systems: Design and Performance Evaluation by Analysis and Full Scale Tests

2008 ◽  
Author(s):  
Celine Sches ◽  
Emmanuel Desdoit ◽  
Jacky Massaglia
Keyword(s):  
Performance Evaluation ◽  
Fatigue Cracks ◽  
Systems Design ◽  
High Strength Steels ◽  
Full Scale ◽  
Post Treatment ◽  
Mechanism Analysis ◽  
Element Analysis ◽  
And Performance ◽  
Full Scale Tests

Threaded and Coupled (T&C) riser connectors with High Strength Steels have been developed for deepwater top tensioned riser (TTR) applications up to 10,000ft Water Depth. These developments have been ongoing for a decade, and the resulting solutions are now becoming the standard in the industry. Due to the stringent fatigue requirements involved, new design and performance evaluation methods were needed and have been built over time. In this article, we will demonstrate how these methods were implemented into the standard development process of T&C connectors, with a focus on finite element analysis (FEA) techniques. This process includes full scale tests programs on resonant fatigue frames, statistical post treatment of the resulting data, and fatigue cracks expertise for failure mechanism analysis. These elements are a key for the evaluation of T&C connectors’ fatigue performance and for the determination of influencing parameters, leading to the proper design optimization possibilities. The application of these methods will be illustrated with actual examples on T&C connectors’ recent developments. Namely, we will describe FEA methodologies, testing methods and results post-treatment techniques. We will show how the connectors’ performance is eventually derived after such analysis and test data accumulation. The reader will see that innovative and effective fatigue enhancement techniques have resulted, along with premium fatigue compliant sealing devices. The experience and expertise gained, together with a continuous improvement process of our methods have made T&C riser connectors a viable solution to meet emerging needs within deepwater industry, including xHP-HT, SCR and flow lines.

Seismic Response of Midrise Light Wood-Frame Buildings with Portal Frames

2014 ◽  
Vol 140 (8) ◽  
Author(s):  
Zhiyong Chen ◽  
Ying H. Chui ◽  
Chun Ni ◽  
Jian Xu
Keyword(s):  
Seismic Response ◽  
Frame Buildings ◽  
Wood Frame
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