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  1. REU Archive Temp

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    http://nees.org/reu-archive

  2. NEES Outstanding Contributor Awards, 2014

     NEES Outstanding Contributor Awards, 2014 These annual OC awards recognize exceptional contributions to the earthquake engineering community. This year, the awards cover activities that...

    http://nees.org/announcements/nees-outstanding-contributor-awards-2014

  3. August 2014 Newsletter

    NEES Community Update - August 2014    Research News In The Network Outreach News   Upcoming Events & Deadlines September 12 1st Workshop on Geotechnical Earthquake...

    http://nees.org/august-2014-newsletter

  4. July 2014 Newsletter

    NEES Community Update - July 2014    Research News In The Network Outreach News   Upcoming Events & Deadlines September 12 1st Workshop on Geotechnical Earthquake...

    http://nees.org/announcements/july-2014-newsletter

  5. Foremost Purdue earthquake engineer urges Congress to fund research for securing seismically vulnerable aging infrastructure

    Foremost Purdue earthquake engineer urges Congress to fund research for securing seismically vulnerable aging infrastructure  Purdue civil engineering professor Julio Ramirez, at left,...

    http://nees.org/announcements/foremost-purdue-earthquake-engineer-urges-congress-to-fund-research-for-securing-seismically-vulnerable-aging-infrastructure

  6. Cold-formed steel construction performs better than expected in seismic tests

    Cold-formed steel construction performs better than expected in seismic tests  The CFS-NEES Phase 2 building was ultimately framed with nonstructural elements including exterior OSB,...

    http://nees.org/announcements/cold-formed-steel-construction-performs-better-than-expected-in-seismic-tests

Top 6 shown

Resources feed

  1. Proceedings of 10th NEES/E-Defense Planning Meeting, December 2013

    18 Aug 2014 | Active Documents | Contributor(s): Marti LaChance

    Report of the Tenth Planning Meeting of NEES/E-Defense Collaborative Research on Earthquake EngineeringDisaster Prevention Research InstituteDecember 11-13, 2013Kyoto UniversityConvened...

    http://nees.org/resources/12889

  2. School Hazard Identification & Risk Management in Alaska

    11 Aug 2014 | Active Documents | Contributor(s): Laura Kelly

    This presentation outlines Alaska’s progress in identifying seismic hazards in Alaska’s schools from the perspective of Laura Kelly who lived in Kodiak, Alaska for 14 years, works for...

    http://nees.org/resources/12884

  3. Ground Improvement Trials Canterbury: Next Steps

    08 Aug 2014 | Multimedia | Contributor(s): Earthquake Commission (EQC)

    Hugh Cowan, Director Research, Earthquake Commission, Tom O'Rourke, Professor of Geotechnical Engineering, Cornell University, Sjoerd van Ballegooy, Senior Geotechnical Engineering, Tonkin...

    http://nees.org/resources/12882

  4. Ground Improvement Trials Canterbury: Techniques

    08 Aug 2014 | Multimedia | Contributor(s): Earthquake Commission (EQC)

    Hugh Cowan, Director Research, Earthquake Commission, Tom O'Rourke, Professor of Geotechnical Engineering, Cornell University, and Sjoerd van Ballegooy, Senior Geotechnical Engineering, Tonkin...

    http://nees.org/resources/12881

  5. Ground Improvement Trials Canterbury: Overview

    08 Aug 2014 | Multimedia | Contributor(s): Earthquake Commission (EQC)

    Hugh Cowan, Director Research, Earthquake Commission, Tom O'Rourke, Professor of Geotechnical Engineering, Cornell University, and Sjoerd van Ballegooy, Senior Geotechnical Engineering, Tonkin...

    http://nees.org/resources/12879

  6. Robust Integrated Actuator Control: Experimental Verification and Real Time Hybrid Simulation Implementation

    06 Aug 2014 | Publications | Contributor(s): Gaby Ou, Ali Irmak Ozdagli, Shirley Dyke, Bin Wu

    In this paper we purpose a new actuator control algorithm achieves the design flexibility, robustness and tracking accuracy to give RTHS users the power to achieve highly accurate and...

    http://nees.org/resources/12860

  7. A PRE-TENSIONED, ROCKING BRIDGE BENT FOR ABC IN SEISMIC REGIONS.

    05 Aug 2014 | Publications | Contributor(s): John Stanton, Marc Eberhard, David Sanders, Travis Thonstad, Jeffrey Schaefer, Bryan Kennedy, Olafur Haraldsson, Islam Mantawy

    A PRE-TENSIONED, ROCKING BRIDGE BENT FOR ABC IN SEISMIC REGIONS. A new, rocking, pre-tensioned concrete bridge bent system has been developed that reduces on-site construction time by precasting...

    http://nees.org/resources/12797

  8. test_uploading4

    29 Jul 2014 | Publications | Contributor(s): Lily Dong

    http://nees.org/resources/7738

  9. Seismic Response of Structural Walls with Geometric and Reinforcement Discontinuities

    29 Jul 2014 | Publications | Contributor(s): Enrique Villalobos

    Villalobos Fernandez, Enrique J., Ph.D., Purdue University, August 2014. Seismic Response of Structural Walls with Reinforcement and Geometric Discontinuities. Major Professor: Santiago...

    http://nees.org/resources/12801

  10. Direct In - Situ Evaluation of Liquefaction Susceptibility

    29 Jul 2014 | Publications | Contributor(s): Julia Roberts

    M.S. Thesis describing in great detail the work completed at WLA in March 2012. Includes background information, testing procedures, analysis procedures, results, and recommendations for future work.

    http://nees.org/resources/12620

  11. Seismic Responses and Protection of Building Systems Using PBEE Methodology

    29 Jul 2014 | Publications | Contributor(s): Zhan Shu

    Buildings are vulnerable to earthquake ground motions. To help reduce the loss from earthquake events, seismic protective devices emerged in recent decades to improve the performance of building...

    http://nees.org/resources/12684

  12. Simulated Bilinear-Elastic Behavior in a SDOF Elastic Structure using Negative Stiffness Device: Experimental and Analytical Study

    29 Jul 2014 | Publications | Contributor(s): Dharma Theja Reddy Pasala, Apostolos Aristotelis Sarlis, Andrei M Reinhorn, Satish Nagarajaiah, Michael Constantinou, Douglas Taylor

    The acceleration and base shear of structures during strong ground motion can be attenuated by achieving bilinear-elastic behavior without any permanent displacement—also referred to as “apparent...

    http://nees.org/resources/12656

  13. Optimal Design of Isolation Devices for Buildings Using Performance Based Methodology

    29 Jul 2014 | Publications | Contributor(s): Jian Zhang, Zhan Shu

    Seismic isolation is a viable method to reduce seismic damages to buildings under moderate and severe earthquake events. In order to systematically evaluate and optimize the building responses,...

    http://nees.org/resources/12704

  14. Optimal nonlinear damping for MDOF inelastic structures

    29 Jul 2014 | Publications | Contributor(s): Jian Zhang, Wang Xi

    Supplemental energy dissipation in the form of nonlinear viscous dampers is often used to improve the performance of new structures or to retrofit the existing ones. The role of the nonlinear...

    http://nees.org/resources/12706

  15. Dimensional Analysis of Inelastic Structures with Negative Stiffness and Supplemental Damping Devices

    29 Jul 2014 | Publications | Contributor(s): Zhan Shu, Jian Zhang, Satish Nagarajaiah

    Negative stiffness device (NSD) has been proposed as an innovative devices for seismic protection of structures. It has been shown numerically and experimentally that they can improve the...

    http://nees.org/resources/12702

  16. Performance Evaluation of Negative Stiffness Devices for Seismic Response Control of Bridge Structures via Experimental Shake Table Tests

    29 Jul 2014 | Publications | Contributor(s): Navid Attary, Michael Symans, Satish Nagarajaiah, Andrei M Reinhorn, Michael Constantinou, Apostolos Aristotelis Sarlis, Dharma Theja Reddy Pasala, Douglas Taylor

    A newly developed passive device that provides negative stiffness has been implemented within a quarter-scale highway bridge model and subjected to seismic loading via shake table testing. Details...

    http://nees.org/resources/12708

  17. Adaptive Stiffness Shaping using Negative Stiffness Device and Apparent Weakening for Seismic Response Control of Multi-story Buildings: Novel Distributed Isolation

    29 Jul 2014 | Publications | Contributor(s): Satish Nagarajaiah, Dharma Theja Reddy Pasala

    “Apparent weakening” of structures using the negative stiffness device (NSD) is a new passive structural control approach developed by the authors to mitigate the response of structures during...

    http://nees.org/resources/12674

  18. Enhanced Smooth Hysteretic Model with Degrading Properties

    29 Jul 2014 | Publications | Contributor(s): Tathagata Ray, Andrei M Reinhorn

    The elastic and inelastic nonlinear behavior of structural members use constitutive relations in which restoring forces and deformations are not proportional, and often follow different paths in...

    http://nees.org/resources/12676

  19. Dynamic Lateral Stability of Elastomeric Seismic Isolation Bearings

    29 Jul 2014 | Publications | Contributor(s): Venkata Vemuru, Satish Nagarajaiah, Armin Masroor, Gilberto Mosqueda

    Predicting the response of elastomeric seismic isolation bearings when subjected to severe ground motions is challenging due to the highly nonlinear behavior associated with the bearings under a...

    http://nees.org/resources/12680

  20. Seismic Protection of Highway Bridges with Negative Stiffness Devices

    29 Jul 2014 | Publications | Contributor(s): Navid Attary, Michael Symans, Satish Nagarajaiah, Andrei M Reinhorn, Michael Constantinou, Apostolos Aristotelis Sarlis, Dharma Theja Reddy Pasala, Douglas Taylor

    Technical Report MCEER-13-0013:A new control device has been developed and implemented for seismic response control of highway bridges. The device produces negative stiffness in a completely...

    http://nees.org/resources/12682

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Wiki Pages feed

  1. PEN Release Notes

    Contents1 PEN 2.41.1 UPDATE 2.4.41.2 UPDATE 2.4.31.3 BETA 2.4.21.4 RELEASE 2.4.11.5 RELEASE CANDIDATE 2.4.02 PEN 2.32.1 END OF LIFE2.2 UPDATE 2.3.72.3 UPDATE 2.3.52.4 UPDATE 2.3.42.5 UPDATE...

    http://nees.org/wiki/NEESPENReleaseNotes

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