A 134-page eManual and its 1004-item estimation spreadsheet provide an exhaustive analysis platform for the costs, risks and opportunities of precast segmental bridges.
Safer work conditions, stationary logistics, one learning curve for main span and approaches, and an inexpensive casting facility are the main advantages of deck launching over arches.
Published on ACI Concrete International, this paper explores segmentation criteria for incrementally launched bridges and the criteria that guide the choice of the most cost-effective solution.
Self-launching gantries and movable scaffolding systems (MSS) are heavy and flexible and interact with bridge piers and superstructure during bridge construction.
Tall piers, steep slopes, ground obstructions, crossings of rivers and wetlands, and marine operations suggest the use of self-launching gantries for precast beam bridges.
The Accident Report NTSB/HAR-19/02 PB2019-101363 of the National Transportation Safety Board (NTSB) identifies multiple reasons for the collapse of the FIU Bridge.
Investigating bridge failures requires long-term practice of structural engineering, deep knowledge of mechanized bridge construction, the ability to conduct an investigation, and familiarity with working with legal counsels.
Full-span precasting offers rapid high-quality construction with minimized labor demand, and the spans are fabricated and erected all year long in almost any weather conditions.
Incremental launching is a versatile construction method with a wide range of applications. A competitive method for rectilinear bridges only? Not at all…!
