NEESWood: Full-Scale 3-D Testing, Numerical Modeling, and Other Progress “NEESWood: Development of a Performance-Based Seismic Design Philosophy for Mid-Rise Woodframe Construction” www.engr.colostate.edu/NEESWood/ John van de Lindt Andre Filiatrault Rachel Davidson David Rosowsky Michael Symans.
Download ReportTranscript NEESWood: Full-Scale 3-D Testing, Numerical Modeling, and Other Progress “NEESWood: Development of a Performance-Based Seismic Design Philosophy for Mid-Rise Woodframe Construction” www.engr.colostate.edu/NEESWood/ John van de Lindt Andre Filiatrault Rachel Davidson David Rosowsky Michael Symans.
NEESWood: Full-Scale 3-D Testing, Numerical Modeling, and Other Progress “NEESWood: Development of a Performance-Based Seismic Design Philosophy for Mid-Rise Woodframe Construction” www.engr.colostate.edu/NEESWood/ John van de Lindt Andre Filiatrault Rachel Davidson David Rosowsky Michael Symans Background & Objective PBD for woodframe construction has roots in HUD’s “Operation Breakthrough” Woodframe PBD is in a position to fuel product innovation – the original intent of 1970’s work Performance criteria resource document for innovative construction, Report NBSIR 771316 National Institute of Standards and Technology, Washington, DC. 17 industry sponsors… 7 member practitioner advisory com. The objective of the NEESWood project is the development of a new logical performancebased seismic design philosophy for mid-rise woodframe construction, thus enabling such construction to be an economic option in seismic regions in the U.S. and around the world Project Components • Full-scale 3-D testing – years 1 and 4 – UB - Benchmark – E-Defense - Capstone • Numerical model development/refinement - ongoing • PBSD development – years 2 and 3 • Inclusion of response modification devices – Testing and analysis • Societal risk/decision making/impact • Outreach and education – REU’s – 2 NEESInc & 2 – CC (ECC) • International collaboration – E-Defense Testing Benchmark Tests University at Buffalo Pre-fabricated walls with dampers Assembly Level Tests RPI CSU Capstone Tests Miki City, JAPAN Benchmark Tests •Evaluate seismic response of full-scale woodframe building •Evaluate effects of interior and exterior wall finish materials – incorporate in design ? •Evaluate effects of passive seismic protection systems •Generate landmark experimental data to be used by project participants and broader earthquake engineering community •2-story townhouse building with an integrated two-car garage •“Production house” in either the 80’s or 90’s, located in either Northern or Southern California •Engineered construction designed according to UBC-1988 Erie Community College •During the test phases requiring drywall installation –30 students from Erie Community College (Construction Management Engineering Technology, Civil Engineering Technology, and Building Management/Building Trades Programs) –Responsibilities will include: •Installation of GWB (drywall) on the interior of the structure for two test phases •Shifts are 4.5 hrs with a 30 minute overlap for continuity – 12 hour work day •Prepare project schedule using Microsoft Project including procurement of materials and supplies based on a given budget •On-site training and safety sessions •Students include male and female students from U.S. and international backgrounds. Minority groups, non-traditional students, traditional students. •Thanks to Tom Albrechcinski Andrei Reinhorn at UB • Gregory Gillis and Shawn Hall at ECC Floor Plans Elevations Woodframe construction 101… Five Test Phases •OSB only with seismic mass equivalent to completed structure •OSB only with pre-fabricated damper walls •Drywall (GWB) on structural walls •Drywall added on partition walls •Stucco – finished structure Completed In-progress Testing on Monday! Test Phase 1, Level 2, 53% Canoga Park Record, 1994 Northridge Earthquake Global Base Shear - Y dir - NWP1S06 40 20 10 0 -3 -2 -1 -10 0 1 2 3 -20 -30 -40 2nd Level Central Displacement (in) Garage Wall - Line 6, 1st floor - NWP1S17 2 Interstory Drift (%) Base Shear (kips) 30 1 0 0 10 20 -1 -2 time (sec) 30 40 Shaking Table Test of Wood Shear Wall with Seismic Damper Seismic Mass Chevron Bracing Displ. & Veloc. Sensor Accelerometer Load Cell Seismic Damper Pre-Fabricated Damper Walls within Wood Framing of NEESWood Test Structure Damper Locations Typical Installation of Pre-Fabricated Damper Wall within Existing Wall Section Analysis of NEESWood Benchmark Test Structure with Dampers Force (kip) Hysteretic Response of Wall Subjected to 120% Canoga Park Bi-Axial Excitation 11 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 No Dampers with Dampers Wall Force + Damper Force -6 -4.5 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Interstory Drift (in) Hysteretic Response of Selected Shear Wall within Test Structure Pre-Fabricated Damper Wall Test structure report from Buffalo less than 24 hours ago Just beginning… • Proposed payload project under review – inclusion of visco-elastic adhesive to reduce damage to drywall (Dinehart and Shenton III) • Seismic Analysis software Package for Woodframe Structures – Based on CASHEW/SAWS platform – GUI to provide outreach to and enable practitioners – Research tools such as IDA included • Societal Risk / Decision Making • PBSD – Displacement-based – Damage-based Dissemination Project Webpage Quarterly Project Newsletter Practitioner Advisory Committee: Kelly Cobeen, Cobeen & Associates J. Daniel Dolan, Washington State University Kevin Cheung, Western Wood Products Association Steven Pryor, Simpson Strong Tie Company Borjen Yeh, APA-The Engineered Wood Association Philip Line, American Forest and paper Association Chikahiro Minowa, NIED-Japan Research Associates: Ioannis P. Christovasilis, UB Hongyan Liu, CSU Shiling Pei, CSU Jayesh Shinde, RPI Weichang Pang, TAMU Assawin Wanitkorkul, UB Damon Reigles, RPI James Foreman, CSU James Lucas, RPI Charles Ekiert, UB David Keller, UB Thank you to the following NEES@UB personnel for their technical assistance: Andrei Reinhorn Thomas Albrechcinski Mark Pitman Christopher Budden Duane Kozlowski Robert Staniszewski Scot Weinreber Jason Hanley Goran Josipovic Thank you! Thank you to the following companies for their material and in-kind donations to The NEESWood Project: APA-The Engineered Wood Association B&L Wholesale Supply Buffalo Plastering Erie Community College Gambale USA DCI Engineers Hartland Builders of New York, Inc. Georgia Pacific MiTek Industries, Inc. National Gypsum NGC Testing Services Niagara Truss & Pallet LLC National Overhead Door, Inc. Stanley Bostitch Simpson Strong-Tie Co. Ridg-U-Rak Taylor Devices Inc. This material is based upon work supported by the National Science Foundation under Grant No. CMS0529903 (NEES Research) and CMS-0402490 (NEES Operations). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the investigators and do not necessarily reflect the views of the National Science Foundation.