PEER Reports

PEER Reports

Scaling Relations between Seismic Moment and Rupture Area of Earthquakes in Stable Continental Regions, PEER Report 2014-14

Paul Somerville
2014

This report describes the development of scaling relations between seismic moment and rupture area of earthquakes in stable continental regions (SCR). The report reviews existing relations, develops new relations, and compares the new relations with the existing relations. It also compares the scaling relations of SCR earthquakes with those in tectonically active continental regions (TCR). Three different methods of estimating rupture area—based on aftershocks, slip models, and duration—were used to analyze the relation between seismic moment and rupture area, using earthquake source...

Single Series Solution for the Rectangular Fiber-Reinforced Elastomeric Isolator Compression Modulus, PEER Report 2015-03

James M. Kelly
Niel C. Van Engelen
2015

Fiber-reinforced elastomeric bearings were originally proposed as an alternative to conventional steel-reinforced elastomeric bearings for seismic isolation applications. The flexible fiber reinforcement is a light-weight and potentially cost-saving alternative to steel reinforcement, which is assumed rigid in the design process. The variety of fiber materials available also serves as an additional parameter for designers to tailor the vertical stiffness of the bearing. In this report, a further cost reduction is visualized by manufacturing the bearing in a large sheet that can be cut to...

NGA-East: Median Ground-Motion Models for the Central and Eastern North America Region, PEER Report 2015-04

2015

This report documents recent ground motion models (GMMs) developed as part of the Next Generation Attenuation for Central and Eastern North America (CENA) project (NGA-East). NGA-East is a multi-disciplinary research project coordinated by the Pacific Earthquake Engineering Research Center (PEER) that involves a large number of participating junior and senior researchers, practitioners, and end-users. Various organizations have provided technical input to the project from academia, industry, and government agencies. The objective of NGA- East is to develop a new ground motion...

Adjusting Ground-Motion Intensity Measures to a Reference Site for which V(S30) = 3000 m/sec, PEER Report 2015-06

David M. Boore
2015

Adjustment factors that can used to convert ground-motion intensity measures at sites with VS30=760 m/sec and VS30=2000 m/sec to a reference rock site, defined as one with VS30=3000 m/sec, are provided as tables: (1) for moment magnitudes from 2 to 8; (2) rupture distances from 2 km to 1200 km; (3) response spectra at periods from 0.01 sec to 10.0 sec; and (4) peak acceleration and peak velocity. Ten velocity models used in ground-motion studies in central and eastern North America with VS30 values very close to 760 m/sec were considered,...

NGA-East: Ground-Motion Standard Deviation Models for Central and Eastern North America, PEER Reports 2015-07

Linda Al Atik
2015

Empirical ground-motion data from Central and Eastern North America (CENA) are used to analyze the components of ground-motion variability in CENA. Trends of ground-motion variability with parameters such as magnitude, distance, and VS30 are analyzed and compared to trends of ground-motion variability in other regions, particularly the Western United States (WUS) using the NGA-West2 dataset.

The CENA dataset is limited in magnitude range to small-to-moderate magnitudes and in frequency content to frequencies between 1 and 10 Hz due to the bandwidth limitations of the recordings....

New PEER Report 2018/08: "Central and Eastern North America Ground-Motion Characterization - NGA-East Final Report"

January 25, 2019

PEER has just published Report No. 2018/08: "Central and Eastern North America Ground-Motion Characterization - NGA-East Final Report." It was authored by Christine Goulet, Yousef Bozorgnia, Norman Abrahamson, Nicolas Kuehn, Linda Al Atik, Robert Youngs, and Robert Graves

Visit the PEER publications page to download a free color pdf of the document.

Abstract

This document is the final project report of the Next Generation Attenuation for Central and Eastern North America (CENA)...

Test Reports Listing

New PEER Report 2021/08: "Seismic Design and Detailing of Bridge Columns to Account for Ground-Motion Duration"

October 8, 2021

PEER has just published Report No. 2021/08 "Seismic Design and Detailing of Bridge Columns to Account for Ground-Motion Duration." It was authored by S. Mojtaba Alian Amiri, Mohamed A. Moustafa and David H. Sanders, Department of Civil and Environmental Engineering, University of Nevada, Reno.

PDF available at: PEER Report 2021/08 or click here for full list: PEER Reports

Abstract:

Devastating,...

New PEER Report 2021/07: "Shake Table Tests on a Shallow Foundation on Liquefiable Soils Supported on Helical Piles"

September 29, 2021

PEER has just published Report No. 2021/07 "Shake Table Tests on a Shallow Foundation on Liquefiable Soils Supported on Helical Piles." It was authored by Milad Jahed Orang and Ramin Motamed, Department of Civil and Environmental Engineering, University of Nevada, Reno.

PDF available at: PEER Report 2021/07 or click here for full list: PEER Reports

Abstract:

Extensive damage to buildings and...

New PEER Report 2021/06: "F-Rec Framework: Novel Framework for Probabilistic Evaluation of Functional Recovery of Building Systems"

September 29, 2021

PEER has just published Report No. 2021/06 "F-Rec Framework: Novel Framework for Probabilistic Evaluation of Functional Recovery of Building Systems." It was authored by Vesna Terzic, Peny K. Villanueva, Daniel Saldana, Dong Y. Yoo, Department of Civil Engineering and Construction Engineering
Management, California State University Long Beach.

Visit the PEER publications page to download a free color pdf of the document.

Abstract:

Earthquakes are one of...