Neal Simon Kwong, PhD (Former Employee)
Science and Products
Filter Total Items: 13
Assessing direct and indirect long-term economic impacts from earthquakes to the U.S. National Bridge Inventory Assessing direct and indirect long-term economic impacts from earthquakes to the U.S. National Bridge Inventory
Using the 2018 National Seismic Hazard Model and the 2018 National Bridge Inventory, an annualized earthquake loss (AEL) study was conducted for approximately 610,000 bridges in the conterminous United States, quantifying both direct and indirect economic losses. The typical AEL framework has been augmented with new replacement unit cost data and bridge-specific parameters for modifying...
Authors
Kishor S. Jaiswal, N. Simon Kwong, Doug Bausch, David J. Wald, Kuo-wan Lin, Sharon Yen, Jerry Shen, Jeffrey Ger
A theoretical framework for integrating ground failure models into regional seismic performance assessments of buried pipelines A theoretical framework for integrating ground failure models into regional seismic performance assessments of buried pipelines
A variety of models exist for characterizing earthquake-induced ground failures, but application of these models towards regional seismic performance assessments of buried pipelines remains challenging. One challenge is that ground failures often occur at localized geospatial scales while buried pipelines are spatially distributed over long distances. In this study, we propose a...
Authors
N. Simon Kwong, Kishor S. Jaiswal
Open-source resources help navigate new IM regulations Open-source resources help navigate new IM regulations
The revision of federal safety regulations for integrity management of gas transmission pipelines to require explicit consideration of seismicity increases the importance for operators to be actively identifying high-consequence areas (HCAs), evaluating seismic-related threats, and choosing a risk model to support risk management decisions. To ensure equal access to information by both...
Authors
N. Simon Kwong, Kishor S. Jaiswal, J. W. Baker, Nico Luco, K. A. Ludwig, Vasey J. Stephens
Earthquake risk of gas pipelines in the conterminous United States and its sources of uncertainty Earthquake risk of gas pipelines in the conterminous United States and its sources of uncertainty
Relatively little research has been conducted to systematically quantify the nationwide earthquake risk of gas pipelines in the US; simultaneously, national guidance is limited for operators across the country to consistently evaluate the earthquake risk of their assets. Furthermore, many challenges and uncertainties exist in a comprehensive seismic risk assessment of gas pipelines. As a...
Authors
N. Simon Kwong, Kishor S. Jaiswal, Jack W. Baker, Nico Luco, K. A. Ludwig, Vasey J. Stephens
Selecting three components of ground motions from Conditional Spectra for multiple stripe analyses Selecting three components of ground motions from Conditional Spectra for multiple stripe analyses
For complex structures where the seismic response depends appreciably on the vertical (V) component of ground motion (GM) (e.g., base-isolated buildings, long-span bridges, dams, nuclear power plants), incremental dynamic analysis (IDA) is commonly utilized to estimate seismic risk, where the V components of GM are selected and scaled based on the corresponding horizontal (H) components...
Authors
N. Simon Kwong, Kishor S. Jaiswal, Nico Luco, J. W. Baker
Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI) Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI)
We estimate annualized earthquake loss associated with over 600,000 bridges located throughout the contiguous United States. Each year, the Federal Highway Administration, in partnership with State Departments of Transportation, undertake a massive exercise to update the National Bridge Inventory (NBI) by combining data from states, federal agencies, local jurisdictions, and tribal...
Authors
Kishor S. Jaiswal, N. Simon Kwong, S. S. Yen, D. Bausch, Kuo-wan Lin, Nico Luco, David J. Wald, J. Rozelle
Non-USGS Publications**
Kwong NS and Chopra AK. (2019). “Selecting, scaling, and orienting three components of ground motions for intensity-based assessments at far-field sites.” Earthquake Spectra, DOI: 10.1177/8755293019899954.
Kwong NS and Chopra AK. The CMS-UHS Composite Spectrum for intensity-based assessments of tall buildings. Proceedings of the 11th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Los Angeles, CA, 2018.
Kwong NS. A method for selecting hazard-consistent ground motions and estimating seismic demand hazard curves. Proceedings of the 16th World Conference on Earthquake Engineering, Chilean Association of Seismology and Earthquake Engineering, Santiago, Chile, 2017.
Kwong NS and Chopra AK. (2016). “A Generalized Conditional Mean Spectrum and its application for intensity-based assessments of seismic demands.” Earthquake Spectra, 33(1), 123–143; DOI: 10.1193/040416EQS050M
Kwong NS and Chopra AK. (2015). “Evaluation of the Exact Conditional Spectrum and Generalized Conditional Intensity Measure methods for ground motion selection.” Earthquake Engineering and Structural Dynamics, 45(5), 757-777; DOI: 10.1002/eqe.2683.
Kwong NS, Chopra AK, McGuire RK. (2015). “Evaluation of ground motion selection and modification procedures using synthetic ground motions.” Earthquake Engineering and Structural Dynamics, 44(11), 1841–1861; DOI: 10.1002/eqe.2558.
Kwong NS, Chopra AK, McGuire RK. (2014). “A framework for the evaluation of ground motion selection and modification procedures.” Earthquake Engineering and Structural Dynamics, 44(5), 795–815; DOI: 10.1002/eqe.2502.
Kalkan E, and Kwong NS, (2013). “Pros and cons of rotating ground motion records to fault-normal/parallel directions for response history analysis of buildings.” ASCE Journal of Structural Engineering, 140(3), 04013062.
Kalkan E, and Kwong NS, (2012). “Assessment of Modal Pushover-based Scaling procedure for nonlinear response history analysis of ordinary standard bridges.” ASCE Journal of Bridge Engineering, 17(2), 272–288.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 13
Assessing direct and indirect long-term economic impacts from earthquakes to the U.S. National Bridge Inventory Assessing direct and indirect long-term economic impacts from earthquakes to the U.S. National Bridge Inventory
Using the 2018 National Seismic Hazard Model and the 2018 National Bridge Inventory, an annualized earthquake loss (AEL) study was conducted for approximately 610,000 bridges in the conterminous United States, quantifying both direct and indirect economic losses. The typical AEL framework has been augmented with new replacement unit cost data and bridge-specific parameters for modifying...
Authors
Kishor S. Jaiswal, N. Simon Kwong, Doug Bausch, David J. Wald, Kuo-wan Lin, Sharon Yen, Jerry Shen, Jeffrey Ger
A theoretical framework for integrating ground failure models into regional seismic performance assessments of buried pipelines A theoretical framework for integrating ground failure models into regional seismic performance assessments of buried pipelines
A variety of models exist for characterizing earthquake-induced ground failures, but application of these models towards regional seismic performance assessments of buried pipelines remains challenging. One challenge is that ground failures often occur at localized geospatial scales while buried pipelines are spatially distributed over long distances. In this study, we propose a...
Authors
N. Simon Kwong, Kishor S. Jaiswal
Open-source resources help navigate new IM regulations Open-source resources help navigate new IM regulations
The revision of federal safety regulations for integrity management of gas transmission pipelines to require explicit consideration of seismicity increases the importance for operators to be actively identifying high-consequence areas (HCAs), evaluating seismic-related threats, and choosing a risk model to support risk management decisions. To ensure equal access to information by both...
Authors
N. Simon Kwong, Kishor S. Jaiswal, J. W. Baker, Nico Luco, K. A. Ludwig, Vasey J. Stephens
Earthquake risk of gas pipelines in the conterminous United States and its sources of uncertainty Earthquake risk of gas pipelines in the conterminous United States and its sources of uncertainty
Relatively little research has been conducted to systematically quantify the nationwide earthquake risk of gas pipelines in the US; simultaneously, national guidance is limited for operators across the country to consistently evaluate the earthquake risk of their assets. Furthermore, many challenges and uncertainties exist in a comprehensive seismic risk assessment of gas pipelines. As a...
Authors
N. Simon Kwong, Kishor S. Jaiswal, Jack W. Baker, Nico Luco, K. A. Ludwig, Vasey J. Stephens
Selecting three components of ground motions from Conditional Spectra for multiple stripe analyses Selecting three components of ground motions from Conditional Spectra for multiple stripe analyses
For complex structures where the seismic response depends appreciably on the vertical (V) component of ground motion (GM) (e.g., base-isolated buildings, long-span bridges, dams, nuclear power plants), incremental dynamic analysis (IDA) is commonly utilized to estimate seismic risk, where the V components of GM are selected and scaled based on the corresponding horizontal (H) components...
Authors
N. Simon Kwong, Kishor S. Jaiswal, Nico Luco, J. W. Baker
Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI) Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI)
We estimate annualized earthquake loss associated with over 600,000 bridges located throughout the contiguous United States. Each year, the Federal Highway Administration, in partnership with State Departments of Transportation, undertake a massive exercise to update the National Bridge Inventory (NBI) by combining data from states, federal agencies, local jurisdictions, and tribal...
Authors
Kishor S. Jaiswal, N. Simon Kwong, S. S. Yen, D. Bausch, Kuo-wan Lin, Nico Luco, David J. Wald, J. Rozelle
Non-USGS Publications**
Kwong NS and Chopra AK. (2019). “Selecting, scaling, and orienting three components of ground motions for intensity-based assessments at far-field sites.” Earthquake Spectra, DOI: 10.1177/8755293019899954.
Kwong NS and Chopra AK. The CMS-UHS Composite Spectrum for intensity-based assessments of tall buildings. Proceedings of the 11th National Conference in Earthquake Engineering, Earthquake Engineering Research Institute, Los Angeles, CA, 2018.
Kwong NS. A method for selecting hazard-consistent ground motions and estimating seismic demand hazard curves. Proceedings of the 16th World Conference on Earthquake Engineering, Chilean Association of Seismology and Earthquake Engineering, Santiago, Chile, 2017.
Kwong NS and Chopra AK. (2016). “A Generalized Conditional Mean Spectrum and its application for intensity-based assessments of seismic demands.” Earthquake Spectra, 33(1), 123–143; DOI: 10.1193/040416EQS050M
Kwong NS and Chopra AK. (2015). “Evaluation of the Exact Conditional Spectrum and Generalized Conditional Intensity Measure methods for ground motion selection.” Earthquake Engineering and Structural Dynamics, 45(5), 757-777; DOI: 10.1002/eqe.2683.
Kwong NS, Chopra AK, McGuire RK. (2015). “Evaluation of ground motion selection and modification procedures using synthetic ground motions.” Earthquake Engineering and Structural Dynamics, 44(11), 1841–1861; DOI: 10.1002/eqe.2558.
Kwong NS, Chopra AK, McGuire RK. (2014). “A framework for the evaluation of ground motion selection and modification procedures.” Earthquake Engineering and Structural Dynamics, 44(5), 795–815; DOI: 10.1002/eqe.2502.
Kalkan E, and Kwong NS, (2013). “Pros and cons of rotating ground motion records to fault-normal/parallel directions for response history analysis of buildings.” ASCE Journal of Structural Engineering, 140(3), 04013062.
Kalkan E, and Kwong NS, (2012). “Assessment of Modal Pushover-based Scaling procedure for nonlinear response history analysis of ordinary standard bridges.” ASCE Journal of Bridge Engineering, 17(2), 272–288.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.