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Projects

Collaborative Research: Using NEES as a Testbed for Studying Soil-Foundation-Structure-Interaction

Principal Investigator: Sharon L. Wood, University of Texas at Austin

This collaborative project addresses one of the most critical needs in earthquake engineering today: improved knowledge of soil-foundation-structure-interaction (SFSI). It also provides an ideal opportunity for demonstrating and challenging the new NEES model for conducting research.

The prototype structure selected for investigation is a continuous bridge structure. The dynamic response of this structure is influenced by the ground motion and the nonlinear characteristics of the soil, foundation, and superstructure. It is impossible to determine which will control the system response a priori. It is also impossible to test a single physical model of the prototype structure and reproduce all key aspects of the system. Therefore, a series of four, complementary physical models will be tested at four different sites:

Note that some tests will be conducted at Purdue University, thereby demonstrating that NEES experimental research is not limited to the fifteen NSF-funded equipment sites. Computational simulation also has a central role in the project for relating the individual component and system experiments. Simulation is needed to design and interpret the individual experimental tests. An important deliverable of the project is improved computational models for SFSI, calibrated from the experiments, in a form available for community use. Finally, the computational simulation component will use and extend NEES system capabilities and resources, such as high-end computing, network distributed computing, databases, and visualization.

Additional Information


Images

Pre-Installation

WOOD SFSI 002
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Filling with Concrete

WOOD SFSI 071
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Installation Team

WOOD SFSI 106
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Videos


Videos are in MPEG format and can be downloaded to your hard drive for viewing with a standalone media player. To download, right-click on a link and select Save Link As... (Firefox) or Save Target As... (IE).

Project Introduction

WOOD SFSI Project Introduction
(Download: small[40MB] large[221MB])

Drilled Shafts Installation

Drilled Shafts Installation
(Download: small[78MB] large[319MB])

Test Setup

Test Setup
(Download: small[17MB] large[78MB])

Shaking with Thumper

Shaking with Thumper
(Download: small[5MB] large[17MB])

Testing with T-Rex

Testing with T-Rex
(Download: small[7MB] large[29MB])

Image Archives

Shaft Installation (2005-02-25)

WOOD SFSI 074
(Click to download archive [66MB])

For additional technical information on this project, please visit the external project page.