An Introduction to the NEES Equipment Site Scheduling Protocol webinar

19 Oct 2011 | Contributor(s): NEES EOT

On Monday Oct. 17th, 2:00-3:00 pm (EST), NEEScomm Site Operations is going to hold a public webinar to introduce the NEES Equipment Site Scheduling Protocol (protocol for short). All members of the NEES community are welcome. To ensure that the scheduling of ongoing and new research projects...

AN INVESTIGATION OF BOND-SLIP BEHAVIOR OF REINFORCING STEEL SUBJECTED TO INELASTIC STRAINS

15 May 2014 | Contributor(s): Xiao Liang, Sri Sritharan

AN INVESTIGATION OF BOND-SLIP BEHAVIOR OF REINFORCING STEEL SUBJECTED TO INELASTIC STRAINSLongitudinal bar slip resulting from strain penetration at the end of flexural concrete members will result in a member end rotation and additional lateral deformations in members such as walls, columns and...

An Investigation of the Unit Shear Strength of Geometrically Scaled Reinforced Concrete Beams

09 Feb 2011 | Publications | Contributor(s): Matthew Murray

 This study examines the influence of beam size on the shear capacity of geometrically scaled reinforced concrete beams without web reinforcement.  The experimental program included six 12-in. deep beams and two 30-in. deep beams.  All components of the large beams were...

ANALYSIS OF AMBIENT VIBRATION DATA COLLECTED FROM TWO BUILDINGS

12 Jul 2011 | Poster | Contributor(s): Caitlin Collins, NEES EOT

 In the summer of 2010, NEES@UCLA, Center for Embedded Network Sensing (CENS), and High School Summer Research Program (HSSRP) interns conducted ambient vibration testing on the Engineering 1 building at University of California at Los Angeles. During the same summer, NEES@UCLA staff...

Analysis of Bridge Performance subjected to Lateral Spreading in the 2010 Chile Earthquake

15 May 2014 | Publications | Contributor(s): Christian Ledezma, Scott Ashford, Kengo Kato, Daniel Gonzalez Paiz

Analysis of Bridge Performance subjected to Lateral Spreading in the 2010 Chile EarthquakeSeveral bridge structures were damaged as a result of liquefaction-induced lateral spreading in the 2010 Chile earthquake. This damage greatly impacts mobility in the region and impedes the recovery,...

Analysis of Dynamical Systems With Path-Dependent Nonlinearities Using MATLAB ODE Solvers

15 May 2014 | Publications | Contributor(s): Farzad Nikfar, Dimitrios Konstantinidis

Solving Nonlinear Dynamical Systems with MATLAB ODE SolversUsing MATLAB’s Ordinary Differential Equation (ODE) Solvers to solve initial value problems (IVP) is very common among researches and students alike. This is mainly because of the wide availability of MATLAB software, practical...

Analytical and Experimental Assessment of Seismic Vulnerability of Beam-Column Joints without Transverse Reinforcement in Concrete Buildings

30 Jul 2011 | Publications | Contributor(s): Wael Mohammed Hassan, Jack Moehle, Bozidar Stojadinovic, Douglas Dreger

Beam-column joints in concrete buildings are key components to ensure structural integrity ofbuilding performance under seismic loading. Earthquake reconnaissance has reported thesubstantial damage that can result from inadequate beam-column joints. In some cases, failure ofolder-type corner...

Analytical and Experimental Study of Concentrically Braced Frames With Zipper Struts

29 Jul 2006 | Publications | Contributor(s): Chuang-Sheng Yang

A dissertation by Chuang-Sheng Yang for the School of Civil and Environmental Engineering - Georgia Institute of Technology (December 2006).

Analytical and Experimental Study of Seismic Performance of Reinforced Concrete Frames Infilled with Masonry Walls

29 Jul 2009 | Publications | Contributor(s): Andreas Stavridis

This dissertation describes the experiment conducted on the first shake-table specimen at UCSD, and also the experiments conducted at the University of Colorado.

Analytical and Experimental Study of Seismic Performance of Reinforced Concrete Frames Infilled with Masonry Walls

29 Sep 2011 | Publications | Contributor(s): Andreas Stavridis

Unreinforced masonry panels are often used as interior or exterior partitions in reinforced concrete frames. How infills affect the seismic performance of an RC building is an intricate issue since their exact role in the seismic load resistance is not yet clearly understood due to the...

Analytical Assesment of the Effect of VErtical Earthquake Motion on RC Bridge Piers

30 Jul 2011 | Publications | Contributor(s): Sung Jig Kim, Curtis Holub, Amr Elnashai

This paper presents analytical assessment of the effect of vertical earthquake ground motion on RC bridge piers. A bridgestructure damaged during the Northridge Earthquake and a Federal Highway concept bridge design are examined. The effects of a suiteof earthquake ground motion records with...

Analytical Evaluation of In-Ground Plastic-Hinge Length and Depth for Piles in Marine Oil Terminals

15 May 2014 | Publications | Contributor(s): Rakesh Goel

Analytical Evaluation of In-Ground Plastic-Hinge Length and Depth for Piles in Marine Oil TerminalsRakesh GoelThis investigation evaluated the current recommendations for plastic-hinge length and depth for pre-stressed concrete and hollow-steel piles for different soil conditions typical of those...

Analytical Investigation on Seismic Performance of a High-Strength Self-Compacting Concrete Beam-Column Joint

15 May 2014 | Publications | Contributor(s): Mohammad Soleymani Ashtiani, Rajesh P. Dhakal, Allan N. Scott

Experimental and Analytical Investigations on Seismic Performance of High-Strength Self-Compacting Concrete Beam-Column JointsDue to its potentially beneficial properties, there has been an increased interest in recent years on performance of self-compacting concrete (SCC) in structural members....

Analytical Modeling Framework for Seismic Risk Assessment of Unreinforced Masonry Structures

15 May 2014 | Publications | Contributor(s): Andrew O'Donnell, Yahya Kurama, Alexandros Taflanidis

Seismic Vulnerability of Unreinforced Masonry BuildingsPast earthquakes have demonstrated that unreinforced masonry (URM) structures are much more susceptible to failure than any other type of construction. As a result, current building codes do not allow the use of unreinforced masonry in new...

Analytical Seismic Fragility Analyses of Fire Sprinkler Piping Systems with Threaded Joints

29 Jul 2013 | Publications | Contributor(s): Siavash Soroushian, Arash E. Zaghi, Manos Maragakis, Alicia Echevarria, Yuan Tian, Andre Filiatrault

Analytical simulation of shake-table responses of a 1:5 scale 9-story RC piloti-type residential building model

15 May 2014 | Publications | Contributor(s): Han Seon Lee, Kyung Ran Hwang, Hye In Lee

Analytical simulation of shake-table responses of a 1:5 scale 9-story RC piloti-type residential building modelThis paper presents the results of analytical simulation of shake-table responses of a 1:5 scale 9-story RC piloti-type residential building model having a torsional eccentricity at the...

Analytical Study of Shear Slotted Bolted Connection in Moment Resisting Frames

15 May 2014 | Publications | Contributor(s): Mohammad Taghi Nikoukalam, Kiarash Mohtasham Dolatshahi, Seyed Rasoul Mirghaderi

Analytical Modeling of Shear Slotted Bolted Connection (SSBC) in Moment Resisting FramesSlotted Bolted Connections (SBCs) and Rotational Slotted Bolted Connections (RSBCs) are two types of friction dampers that have been employed over the years in braced frames and moment resisting frames,...

Analytical Study on the Seismic Performance of A RC Building with Structural Wall during the May 19, 2011 Simav, Turkey Earthquake

15 May 2014 | Publications | Contributor(s): Onur TUNABOYU, Ozgur AVSAR

Influence of Structural Walls on the Seismic Response of RC Buildings during Kütahya-Simav Earthquake in TurkeyRC buildings having adequate amount of structural walls with a proper layout, are proven to have a satisfactory seismic performance during previous earthquakes. Properly constructed...

Anchorage Detailing Effects on Lateral Deformation Components of R/C Shear Walls

26 May 2010 | Publications | Contributor(s): Benton Johnson

Structural walls, or shear walls, are elements used to resist lateral loads, such as those generated by wind and earthquakes. Structural walls are considerably deeper than typical beams or columns. This attribute gives structural walls considerable in-plane stiffness which makes structural walls...

Antibacterial Silica Nanoparticles Impact on Water Quality: Experiments Involving MF254A, Ralstonia pickettii species, in Ultrapure Water (UPW)

02 Jan 2011 | Poster | Contributor(s): Lisa Jones

According to the Center for Disease Control and Prevention, the public is being bombarded with ads for cleansers, soaps, toothbrushes, dishwashing detergents, and hand lotions, all containing antibacterial agents. Nanoparticles, which are materials at length scales less than 100 nanometers, have...