Long-span bridge computer modelling
Citation
Asian Architect & Contractor, v.13, no.8, 1983, pp. 78-83
Abstract
Abstract: The Queensboro Bridge in New York City is presently undergoing major rehabilitation to its road surfaces and wind bracing system. A three dimensional computer model of this bridge was developed since significant cost savings were feasible if accurate analyses of the structure could be provided during the 15-yr rehabilitation period. The size of the model was reduced considerably by simplifying ornate portal frames and neglecting the contribution of the floor systems (upper and lower) to the torsional rigidity of the entire structure. The accuracy of the model was verified by comparison to previously computed geometry and member stresses. The first use of the three dimensional model resulted in providing the contractor maximum flexibility in conducting his work and thus should reduce his costs.
(1) Introduction
(2) General description of bridge
(3) Erection of the bridge
(4) Background of model development
(5) Verification of the computer model
(a) Original Dead Load Geometry Verification
(b) Dead Load Stress Verification
(6) Use of the model for rehabilitation contract no.2
(7) Conclusion
(8) Appendix - references
Mr. Thomas A. Fisher is the Assistant Department Manager, Structures Department, Steinman Boynton Gronquist and Birdsall, Mr, Ramesh B.K. Rao is Senior Engineer with the same company. This paper was first presented at the September 12-16, 1982, ASCE Annual Fall Convention held at New Orleans, Louisianna and is reprinted courtesy of ASCE.
Description
Subject
Type
Article
Format
Date
1983
Language
en