1 NEES-Pile: Experimental and Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading Topic for Wrap-up Discussion.

Slides:



Advertisements
Similar presentations
GUI familiarity level required: Higher
Advertisements

Structural Engineering and Earthquake Simulation Laboratory Task 1 (1g Tests) Experimental and Micromechanical Computational Study of Pile Foundations.
Shake Tables Derek Jacobs & Julia Johnson. What is a shake table? Used to replicate earthquakes Can also used for noise & vibration tests Their most basic.
Flood Profile Modeling with Split Flows and Weirs
Prepared by J. P. Singh & Associates in association with Mohamed Ashour, Ph.D., PE West Virginia University Tech and Gary Norris Ph.D., PE University of.
Liangcai He Committee in Charge: Professor Ahmed Elgamal, Chair
3-D Dynamic Base Shaking Model 2-D Static BNWF Pushover Model
NEES-Pile: Experimental and Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading COMPARISON BETWEEN CENTRIFUGE.
GLE/CEE 330: Soil Mechanics Infinite Slope Analysis
Work, Power, and Machines
Physics Review - answers Accelerated motion, free-fall, and the Law of Inertia.
Direct Evaluation of Effectiveness of Prefabricated Vertical Drains in Liquefiable Sand Wen-Jong Chang, National Chi Nan University Ellen M. Rathje, University.
Advanced Site Monitoring and Characterization of Site Dynamic Properties Mourad Zeghal, Tarek Abdoun and Vicente Mercado Department of Civil and Envir.
Caltrans Guidelines on Foundation Loading Due to Liquefaction Induced Lateral Spreading Tom Shantz, Caltrans 2010 PEER Annual Meeting.
Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) – Part A Experimental and Micromechanical Computational Study of Pile Foundations.
PEER 2002 PEER Annual Meeting Performance of Improved Ground u Elizabeth A. Hausler and Nicholas Sitar.
Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) Experimental and Micromechanical Computational Study of Pile Foundations.
Keck Telescope Seismic Upgrade Design Support - Progress Report Frank Kan Andrew Sarawit 4 May 2011 (Revised 5 May 2011)
Ballistic Cart Demo Discuss law of cosines for planeinwindb problem Other HW problems?
Physics 151 Week 5 Day 1 Topics Area under a velocity graph
S1-1 SECTION 1 REVIEW OF FUNDAMENTALS. S1-2 n This section will introduce the basics of Dynamic Analysis by considering a Single Degree of Freedom (SDOF)
WinTR-20 Project Formulation Hydrology Computer Program Basic Input and Output Presented by: WinTR-20 Development Team.
Reference Book is. NEWTON’S LAW OF UNIVERSAL GRAVITATION Before 1687, clear under- standing of the forces causing plants and moon motions was not available.
Liquefaction Analysis For a Single Piled Foundation By Dr. Lu Chihwei Moh and Associates, Inc. Date: 11/3/2003.
Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) Experimental and Micromechanical Computational Study of Pile Foundations.
Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) Experimental and Micromechanical Computational Study of Pile Foundations.
1 Interpretation and Visualization of Model Test Data for Slope Failure in Liquefying Soil Bruce L. Kutter Erik J. Malvick R. Kulasingam Ross Boulanger.
Structural Engineering and Earthquake Simulation Laboratory Experimental and Micromechanical Computational Study of Pile Foundations Subjected to Liquefaction-Induced.
1 NEES-Pile: Experimental and Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading Topic for Wrap-up Discussion.
Frontiers in Modeling Magnetic Flux Emergence and the Development of Solar Eruptive Activities Organizers: Mark Linton and Yuhong Fan SHINE Liaison: KD.
LIQUEFACTION FAILURE OF FOUNDATION - STRUCTURE COLLAPSE.
Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) Experimental and Micromechanical Computational Study of Pile Foundations.
Questions: Do heavier objects fall faster than lighter ones when starting from the same position? Does air resistance matter? If the free fall motion has.
1 SG-1: Lateral Spreading – Observations and Analysis Raghudeep B., and S. Thevanayagam, UB Aug. 07, 2007, 2-4 pm; UB-VTC SG-1: Lateral Spreading – Observations.
Physics I Honors 1 Happy New Quarter day I sent an arrow into the air and it landed I know not where. But, It was launched at 30 degrees with a velocity.
ME451:Kinematics and Dynamics of Machine Systems (Spring 09)
Chapter 4 The Laws of Motion. Classes of Forces Contact forces involve physical contact between two objects Field forces act through empty space No physical.
Class A Centrifuge Prediction of future SG1 of Full Scale Test with Pile Foundation by Marcelo Gonzalez Tarek Abdoun Ricardo Dobry Rensselaer Polytechnic.
Dynamics: Newton’s Laws of Motion
Structural Engineering and Earthquake Simulation Laboratory SG-1: Lateral Spreading – Observations & Analysis Raghudeep B. & Thevanayagam S. 20 Aug 2007:
Investigating Patterns Cornell Notes & Additional Activities.
Structural Engineering and Earthquake Simulation Laboratory 1-g Pile Tests – Brief Plans 1-g Pile Tests – Brief Plans R. Bethapudi, S. Thevanayagam, UB.
PRACTICE AND RESEARCH ON MICROPILE GROUPS AND NETWORKS Prof. François SCHLOSSER ENPC - CERMES 2 nd LIZZI lecture Tokyo IWM August 2004.
Use Flowchart modeling to design and create an interactive quiz to be run on Powerpoint. Start Question Click to start the quiz Correct Incorrect, try.
Work and Machines Simple Machines. Work and Machines Machines make work easier to do –They change the size of a force needed, the direction of a force,
ADAMS Assignment 6 ME451:Kinematics and Dynamics of Machine Systems (Fall 2013) Assigned: November 13, 2013 Due: November 20, 2013.
Site Specific Response Analyses and Design Spectra for Soft Soil Sites Steven F. Bartlett, Ph.D., P.E. I-15 NATIONAL TEST BED TECHNOLOGY TRANSFER SYMPOSIUM.
1 Quake Summit 2010 October 9, 2010 Centrifuge Testing and Parallel Numerical Simulations of Lateral Pressures Measured Against a Rigid Caisson PI: Scott.
U.S. – Taiwan Workshop on Soil Liquefaction November 4, 2003 Physical and Numerical Modeling Breakout Session.
Chapter 5 The Laws of Motion.
NEES-Pile: Experimental and Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading NEESPile 2-day-Workshop Aug. 20.
Kristina Schneider Kristi Shaw
PROJECT OVERVIEW AND UPDATE: NEESR-SG RESEARCH ON PILES SUBJECTED TO LATERAL SPREADING Ricardo Dobry Kickoff Meeting RPI, Nov. 19, 2005.
CP Physics Chapter 4 Newton’s Laws Force Force (F) is a push or a pull Measured in Newtons (N) for SI, pounds (lb) in US. (4.45 N = 1 lb) It has magnitude.
Chapter 4 Dynamics: Aim: How can we describe Newton’s Laws of Motion? © 2014 Pearson Education, Inc.
IB Physics 11 Mechanics 2.1 Projectiles 1 Mr. Jean.
BASICS OF DYNAMICS AND ASEISMIC DESIGN
1 Chapter 4 The Laws of Motion Classes of Forces Contact forces involve physical contact between two objects Field forces act through empty.
Bridge Hydraulics and Geotechnical. BRIDGE HYDRAULICS AND GEOTECHNICAL TECHNICAL STANDARDS BRANCH INTRODUCTION TO BRIDGES TRANSPORTATION Slide 2 The Hydrological.
Microzonation Study of Soil Liquefaction Potential and Damage Wei F. Lee Taiwan Construction Research Institute Ming-Hung Chen National Center for Research.
1 Chapter 5 The Laws of Motion. 2 Force Forces are what cause any change in the velocity of an object A force is that which causes an acceleration The.
Task 4: DEM Modeling of Soil-Pile System Status Report Claudia Medina Mourad Zeghal RPI, February 15, 2005.
General Formulation for Surface and Embedded Foundations (Gazetas,1991) FIGURE XXX (MIWA, 20XX) A number of investigations have been done after earthquakes.
U.S.-Taiwan Workshop on Soil Liquefaction
Plate movement Earthquake = sudden release of energy in the Earth’s crust that creates seismic waves. They are measured by the Richter Scale,
Christopher R. McGann, Ph.D. Student University of Washington
Types of boundaries Destructive Boundaries – AKA Subduction Zones
SEISMIC BEHAVIOR OF MICROPILE SYSTEMS
Chapter 12 : Kinematics Of A Particle
Questions: Do heavier objects fall faster than lighter ones when starting from the same position? Does air resistance matter? If the free fall motion has.
Presentation transcript:

1 NEES-Pile: Experimental and Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading Topic for Wrap-up Discussion Day 1: Free field tests LG-0 and SG-1 Rensselaer Polytechnic Institute August 20 th, 2007

2 Wrap-up discussion Submission of internal reports for analysis of test SG1 (Nov 1 st, 2007) and 3D Viewer (Nov 1 st, 2007). 4 reports (Co’PIs) + 1 report mechanics lateral spreading (Raghu, Medina, Bennett). DEM, FEM + Centrifuge group: combine report on LG-0 and SG1 If we are going to publish different papers and refer them between each other. Shouldn’t we go with the same units and time scale? International system and t = 0 to 8.5 sec Which kind of sand are we dealing with? Contractive? Dilative? Get Theva’s PDF’s with results of triaxial tests and steady-state properties of sand (it will be sent to the whole group). New triaxial tests at Buffalo using wet pluviation (Theva). Take advantage of tests to be done by Vucetic? (Dobry)

3 Wrap-up discussion Data suggest lateral spreading begins when soil is not yet fully liquefied. New way to describe liquefaction and lateral spreading in terms of micromechanics approach? Coordination number? Relation to dilative response? (include in DEM and lateral mechanism reports) From displacement data there are “2 CLEAR” events of sliding when driving force is minimum (max positive acceleration). Can we predict at which specific depth(s) will sliding happen? Is it related to the time of sliding initiation and hence to type of shaking input? Why does sliding start at time  is minimum? (to be included in lateral mechanism report)

4 Wrap-up discussion Issue of  flow /  ’ vo = 0.08 depending to the slope of the box and not on soil properties? Different if we change the inclination of the box? Compute plots of  f = Sr vs time at different elevations or sliding planes (include in lateral mechanism reports) Include appropriate target in each ring for future tests at Buffalo. Install potentiometers in each ring if possible Different Vs profile for Centrifuge and 1g test. Also, large amplification NDS in Buffalo (frequency close to resonance?). Therefore more acceleration input has been needed in centrifuge tests. We need: –Study dynamic amplification effects in both SG-1 and centrifuge in NDS. Shake, FEM? To predict output (Gonzalez and Raghu in reports) –Repeat centrifuge simulation of SG-1 with wet pluviated sand? To be decided after seeing results of new triaxial tests at Buffalo

5 Wrap-up discussion Repeat SI of centrifuge and SG-1 for Vs, making sure we are consistent, including inertia of rings above ground surface (Gonzalez) Repeat DEM run of SG-1 with 2 degrees and seepage parallel to slope. Objective: try to get a “working DEM model” of SG-1 (El Shamy) Repeat FEM runs of SG-1 and LG-0 until we have “working FEM model” of SG-1 and LG-0 (Medina and Elgamal)