Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).

View the beta site
NIST logo

Publications Portal

You searched on: Author: hai lew

Displaying records 1 to 10 of 54 records.
Resort by: Date / Title


1. An Experimental and Computational Study of Precast Concrete Moment Frames under a Column Removal Scenario
Series: Technical Note (NIST TN)
Report Number: 1886
Published: 9/22/2015
Authors: Joseph A Main, Yihai Bao, Hai Sang Lew, Fahim Sadek, Vincent P Chiarito, Stephen D. Robert
Abstract: This report presents an experimental and computational study of two precast concrete moment-frame assemblies, each comprising three columns and two beams. The two moment-frame assemblies represent portions of the perimeter moment frames of two 10-sto ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917403

2. EXPERIMENTAL STUDY OF RC ASSEMBLIES UNDER A COLUMN REMOVAL SCENARIO
Published: 7/1/2014
Authors: Hai Sang Lew, Yihai Bao, Santiago Pujol, Mete Sozen
Abstract: This paper presents an experimental study of two full-scale reinforced concrete (R/C) beam-column assemblies under a column removal scenario. The assemblies represent portions of the exterior moment-resisting frames of two ten-story R/C frame buildin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912863

3. Robustness Assessment of RC Frame Buildings under Column Loss Scenarios
Published: 4/3/2014
Authors: Yihai Bao, Joseph A Main, Hai Sang Lew, Fahim Sadek
Abstract: A computational assessment of the robustness of reinforced concrete (RC) building structures under column loss scenarios is presented. A reduced-order modeling approach is presented for three-dimensional RC framing systems, including the floor slab, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915189

4. Robustness of Precast Concrete Frames: Experimental and Computational Studies
Published: 4/3/2014
Authors: Joseph A Main, Yihai Bao, Hai Sang Lew, Fahim Sadek
Abstract: This paper describes both full-scale testing and detailed finite-element modeling of a precast concrete moment-frame assembly extracted from the perimeter moment frame of a 10-story prototype building. The assembly comprises two beam spans and three ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915219

5. A Simple Means for Reducing the Risk of Progressive Collapse
Published: 12/1/2013
Authors: Yihai Bao, Hai Sang Lew, Fahim Sadek, Joseph A Main
Abstract: A simple debonding technique is proposed to reduce or eliminate strain localization in reinforcing bars in the region of wide flexural cracks in RC beams, and as a result enhance the resistance of RC buildings to disproportionate collapse. In this st ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914051

6. Alkali-Silica Reaction Degradation of Nuclear Power Plant Concrete Structures: A Scoping Study
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7937
Published: 3/11/2013
Authors: Kenneth Alan Snyder, Hai Sang Lew
Abstract: Alkali-silica reaction (ASR) is a concrete degradation phenomenon in which the alkalis that are typically found in concrete react with certain amorphous or micro-crystalline siliceous phases in the aggregate and, in the presence of moisture, form ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913633

7. Modeling of Reinforced Concrete Assemblies under a Column Removal Scenario
Published: 11/8/2012
Authors: Yihai Bao, Hai Sang Lew, Sashi K. Kunnath
Abstract: This paper presents a computational investigation of two reinforced concrete beam-column assemblies, each comprising three columns and two beams, subjected to monotonically increasing vertical displacement of the unsupported center column simulating ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910525

8. Performance of Steel Moment Connections under a Column Removal Scenario. I: Experiments
Published: 4/3/2012
Authors: Hai Sang Lew, Joseph A Main, Stephen D Robert, Fahim Sadek, Vincent Chiarito
Abstract: This paper presents an experimental study of two full-scale steel beam-column assemblies, each comprising three columns and two beams, to (1) define their response characteristics under a column removal scenario, including the capacity of the beams a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909210

9. Performance of Steel Moment Connections under a Column Removal Scenario. II: Analysis
Published: 4/3/2012
Authors: Fahim Sadek, Joseph A Main, Hai Sang Lew, Sherif El-Tawil
Abstract: This paper presents a computational investigation of the response of steel beam-column assemblies with moment connections under monotonic loading conditions simulating a column removal scenario. Two beam-column assemblies are analyzed, which incorpo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909213

10. Computational Model for Nonlinear Behavior of R/C Beam-Column Assemblies and Full-Scale Experimental Validation under a Column Removal Scenario
Published: 10/31/2011
Authors: Yihai Bao, Hai Sang Lew
Abstract: A number of computational tools have been developed in recent years to simulate the disproportionate (progressive) collapse behavior of multi-story reinforced concrete buildings. Under disproportionate collapse scenarios, beam-column connections of m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909260



Search NIST-wide:


(Search abstract and keywords)


Last Name:
First Name:







Special Publications:

Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series