Location
San Diego, California
Presentation Date
30 Mar 2001, 10:30 am - 12:30 pm
Abstract
Newmark method is a commonly accepted practice in geotechnical earthquake engineering to estimate seismically induced displacement of earth structures. The method currently requires performing a series of analyses using multiple computer programs to 1) identify a potential sliding mass, 2) compute a factor of safety, 3) calculate a yield acceleration, and 4) perform a double integration of that portion of a given horizontal acceleration history that exceeds the yield acceleration. The Newmark method provides satisfactory results for a horizontal sliding surface. However, for an inclined sliding surface the result is unconservative and for a nonplanar one is not clear. To avoid the problems and to facilitate the Newmark method a numerical technique was developed and a computer program was written to carry out the analysis. A single analysis determines a two-dimensional pattern of seismically induced displacement due to given earthquake motions. Results of analyses for three examples are given to demonstrate the comparison between the new method and the Newmark method.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Beikae, Mohsen, "Is Newmark Method Conservative?" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 12.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session05/12
Included in
Is Newmark Method Conservative?
San Diego, California
Newmark method is a commonly accepted practice in geotechnical earthquake engineering to estimate seismically induced displacement of earth structures. The method currently requires performing a series of analyses using multiple computer programs to 1) identify a potential sliding mass, 2) compute a factor of safety, 3) calculate a yield acceleration, and 4) perform a double integration of that portion of a given horizontal acceleration history that exceeds the yield acceleration. The Newmark method provides satisfactory results for a horizontal sliding surface. However, for an inclined sliding surface the result is unconservative and for a nonplanar one is not clear. To avoid the problems and to facilitate the Newmark method a numerical technique was developed and a computer program was written to carry out the analysis. A single analysis determines a two-dimensional pattern of seismically induced displacement due to given earthquake motions. Results of analyses for three examples are given to demonstrate the comparison between the new method and the Newmark method.
