Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Development of Economical Low-Volume Road Bridges
Low-volume bridges are currently designed according to the same specifications as urban highway bridges. Thus, many of the low-volume bridge designs are overly conservative and uneconomical. The report addresses the issue and proposes modifications of the existing specifications in the areas of fatigue, deflection, allowable stress, composite action of timber decks, bridge width, lane loading and the use of guardrails. Value engineering principles have been used to develop and select economical bridge systems. All of the systems selected were combinations of prefabricated components. Jointless bridges received very high rankings and are strongly recommended for the 60-ft and 100-ft span ranges. A precast voided slab system and a timber deck and steel stringer system received the highest ranking on the 30-ft span range. The study also proposes a method of selecting the type of bridge system to be built in a particular area and a priority scheme to select which bridges must be replaced first.
Development of Economical Low-Volume Road Bridges
Low-volume bridges are currently designed according to the same specifications as urban highway bridges. Thus, many of the low-volume bridge designs are overly conservative and uneconomical. The report addresses the issue and proposes modifications of the existing specifications in the areas of fatigue, deflection, allowable stress, composite action of timber decks, bridge width, lane loading and the use of guardrails. Value engineering principles have been used to develop and select economical bridge systems. All of the systems selected were combinations of prefabricated components. Jointless bridges received very high rankings and are strongly recommended for the 60-ft and 100-ft span ranges. A precast voided slab system and a timber deck and steel stringer system received the highest ranking on the 30-ft span range. The study also proposes a method of selecting the type of bridge system to be built in a particular area and a priority scheme to select which bridges must be replaced first.
Development of Economical Low-Volume Road Bridges
H. V. S. GangaRao (Autor:in) / T. R. Zelina (Autor:in) / R. Ward (Autor:in) / V. Howser (Autor:in)
1987
167 pages
Report
Keine Angabe
Englisch
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