Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Structural Behavior of a Box Girder Bridge
The report presents the results of a moving load field test of an 80 foot, simple span, reinforced concrete box girder structure. The bridge was instrumented with strain and deflection gages and tested with a dump truck (gross weight of 57 kips) at various speeds and lateral positions. The primary objective of the study was to obtain information on the transverse distribution of live loads; secondary objectives involved the determination of dead load distribution, influence of intermediate diaphragms and influence of barrier curbs. Experimental results were compared with three analytical methods of calculating load distribution. Some of the conclusions stated were: (1) Dead load deflections measured in the field checked closely those compiled theoretically; (2) live load distribution without a diaphragm indicated about 15 percent greater transverse distribution than allowed in the 1961 AASHO Bridge Specifications; (3) addition of a midspan diaphragm resulted in very small changes; (4) addition of curbs and railings resulted in a large increase of total section stiffness; (5) only one of the analytical methods agreed closely with experimental results. A separate volume of the report contains appendices which detail the data reduction, materials control tests, and the analytical methods. (Author)
Structural Behavior of a Box Girder Bridge
The report presents the results of a moving load field test of an 80 foot, simple span, reinforced concrete box girder structure. The bridge was instrumented with strain and deflection gages and tested with a dump truck (gross weight of 57 kips) at various speeds and lateral positions. The primary objective of the study was to obtain information on the transverse distribution of live loads; secondary objectives involved the determination of dead load distribution, influence of intermediate diaphragms and influence of barrier curbs. Experimental results were compared with three analytical methods of calculating load distribution. Some of the conclusions stated were: (1) Dead load deflections measured in the field checked closely those compiled theoretically; (2) live load distribution without a diaphragm indicated about 15 percent greater transverse distribution than allowed in the 1961 AASHO Bridge Specifications; (3) addition of a midspan diaphragm resulted in very small changes; (4) addition of curbs and railings resulted in a large increase of total section stiffness; (5) only one of the analytical methods agreed closely with experimental results. A separate volume of the report contains appendices which detail the data reduction, materials control tests, and the analytical methods. (Author)
Structural Behavior of a Box Girder Bridge
R. E. Davis (Autor:in) / J. J. Kozak (Autor:in) / C. F. Scheffey (Autor:in)
1965
169 pages
Report
Keine Angabe
Englisch
Structural behavior of concrete box girder bridge
| Engineering Index Backfile | 1965
Structural Behavior of a Box Girder Bridge (Appendices)
| NTIS | 1965