00621798

Component

http://onlinepubs.trb.org...trr/1991/1309/1309-012.pdf

https://scholar.google.co....+Ho&publication_year=1991

A base spectrum and soil amplification spectra are developed and are intended to replace the seismic response spectrum and site coefficients presented in the AASHTO guidelines for highway bridge design in Washington State. The base spectrum is constructed using available data on ground motion from subduction zone earthquakes similar to those that occur in Washington State. These earthquakes generally have larger high-frequency components than shallow-focus earthquakes. Because the existing codes are based primarily on data from shallow-focus earthquakes, the base spectrum developed has a larger high-frequency content than the existing base spectrum. The soil amplification spectra are derived using 123 boring logs from actual bridge sites in Washington. Data from the boring logs are correlated to dynamic soil properties, which are used in the computer program SHAKE to find the frequency-dependent amplification properties of the soil profiles. The profiles are grouped by depth and type of soils. Nine groups are identified, and mean amplification spectra are developed for each group. The design spectra are compared with results from other site-dependent studies as well as to the responses of the 1949 and 1965 Puget Sound earthquakes.

This paper appears in Transportation Research Record No. 1309, Geotechnical Engineering 1991. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01407154

p. 84-91

1991

Transportation Research Record

0309051185

Figures (15) ; References (28) ; Tables (1)

Boring; Earthquake resistant design; Earthquakes; Highway bridges; Properties of materials; Soils

Data; Soil properties

Washington (State)

Bridges and other structures; Design; Geotechnology; Highways; Materials; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics

TRIS, TRB

Apr 30 1992 12:00AM

• APPLICATION OF CONTINUOUS DYNAMIC COMPACTION CONTROL FOR EARTHWORKS IN RAILROAD CONSTRUCTION
• BROADENING THE SPECIFICATION OF GRANULAR FILLS
• CORRELATING RESILIENT MODULI FROM PRESSUREMETER TESTS TO LABORATORY CALIFORNIA BEARING RATIO TESTS
• DECISION SUPPORT SYSTEM FOR EVALUATION AND TREATMENT OF EARTH SLOPE INSTABILITY
• FINITE ELEMENT ANALYSIS OF PARTIALLY SATURATED SEEPAGE THROUGH COMPACTED FILLS
• INEXPENSIVE AUTOMATIC CONTROL SYSTEM FOR SOILS TESTING
• INNOVATIONS IN HYDRAULIC-CONDUCTIVITY MEASUREMENTS
• LABORATORY CORRELATION STUDY OF NEAR-SURFACE RESPONSE PARAMETERS
• MEASUREMENT OF SHEAR AND COMPRESSION WAVES DURING TRIAXIAL TESTING
• PROTOTYPE GEOTECHNICAL INFORMATION SYSTEM
• USE OF VOICE-RECOGNITION SYSTEMS FOR ATTERBERG LIMIT TESTS