An Investigation of the Effectiveness of Existing Bridge Design Methodology
Author: United States. Federal Highway Administration. Offices of Research and Development
Publisher:
Published: 1972
Total Pages:
ISBN-13:
DOWNLOAD EBOOK →Author: United States. Federal Highway Administration. Offices of Research and Development
Publisher:
Published: 1972
Total Pages:
ISBN-13:
DOWNLOAD EBOOK →Author: United States. Federal Highway Administration. Structures and Applied Mechanics Division
Publisher:
Published: 1978
Total Pages: 120
ISBN-13:
DOWNLOAD EBOOK →Author: United States. Federal Highway Administration. Structures and Applied Mechanics Division
Publisher:
Published: 1978
Total Pages: 236
ISBN-13:
DOWNLOAD EBOOK →Author: United States. Federal Highway Administration. Structures and Applied Mechanics Division
Publisher:
Published: 1978
Total Pages: 196
ISBN-13:
DOWNLOAD EBOOK →Author: Ma-chi Chen
Publisher:
Published: 1977
Total Pages: 120
ISBN-13:
DOWNLOAD EBOOK →Four different mathematical model elements are incorporated into the three dimensional computer program which possess the capability of performing linear or nonlinear-time-history dynamic response analysis. Solid finite element modelling is used for the backfill soils and the abutment walls. The bridge deck, pier columns and pier caps are modelled using prismatic beam elements. A frictional element is used to model the discontinuous behavior at the interfaces of the backfill soils and abutments. Boundary elements provide foundation flexibility at the base of columns supported on either piles or spread footings. In the nonlinear mathematical model the effects of separation, impact and slippage at the interfaces between the abutment walls and the backfill soils are taken into consideration. Computational efficiency is achieved through the use of mathematical techniques including matrix reduction procedures, interaction procedures and variable time steps. A number of analytical solutions are carried out considering a skewed three-span bridge with backfill soils. Different mathematical models are used to study the parameters which may influence the seismic response of the bridge.
Author: United States. Federal Highway Administration. Offices of Research and Development
Publisher:
Published: 1979
Total Pages: 72
ISBN-13:
DOWNLOAD EBOOK →Author: William G. Godden
Publisher:
Published: 1978
Total Pages: 48
ISBN-13:
DOWNLOAD EBOOK →This summary report is the last in a series. It presents brief summaries of the other six reports. It also presents general design and research recommendations for highway bridges based on the knowledge and experiences gained during this seven-year investigation.
Author: Roy A. Imbsen
Publisher:
Published: 1978
Total Pages: 186
ISBN-13:
DOWNLOAD EBOOK →Presented are the results of six case studies conducted on each of three bridges (the Route 80 Onramp Undercrossing, the Northwest Connector Overcrossing, and the Southwest Connector Overcrossing designed by the California Department of Transportation) when subjected to strong seismic excitation. The dynamic responses of each bridge for separate excitations in the longitudinal and transverse directions were determined using the response spectral, linear time-history, and nonlinear time-history approaches. Maximum response values are interpreted in terms of current design procedures and code provision.