Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Near-Real-Time Embankment Settlement Monitoring for Construction Control
A proposed multi-span bridge was efficiently reduced to a single span in the design phase of a rural Minnesota project. Geotechnical analysis found it possible and significantly more cost effective to construct and monitor longer approach embankment fills over compressible clays as they deflected 300-450 mm (12-18 in) prior to roadway construction. The revised plan involved: removal of 3 m (10 ft) of compressible surface soils; construction of a reinforced load distribution platform; installation of earth pressure cells, piezometers, and ShapeAccelArray deformation sensors; soil preloading and surcharging; a near-real-time monitoring program to control construction sequencing, and a post-construction waiting period. Five cross sections were instrumented and the performance monitored through the construction period. The monitoring program was successfully able to evaluate increases in load, associated pore water pressure, and resulting deformation responses. High frequency data collection and reporting allowed project engineers to make informed decisions to restrict or accelerate construction. The program, while expensive, was highly cost effective considering reduced bridge construction and long-term maintenance costs.
Near-Real-Time Embankment Settlement Monitoring for Construction Control
A proposed multi-span bridge was efficiently reduced to a single span in the design phase of a rural Minnesota project. Geotechnical analysis found it possible and significantly more cost effective to construct and monitor longer approach embankment fills over compressible clays as they deflected 300-450 mm (12-18 in) prior to roadway construction. The revised plan involved: removal of 3 m (10 ft) of compressible surface soils; construction of a reinforced load distribution platform; installation of earth pressure cells, piezometers, and ShapeAccelArray deformation sensors; soil preloading and surcharging; a near-real-time monitoring program to control construction sequencing, and a post-construction waiting period. Five cross sections were instrumented and the performance monitored through the construction period. The monitoring program was successfully able to evaluate increases in load, associated pore water pressure, and resulting deformation responses. High frequency data collection and reporting allowed project engineers to make informed decisions to restrict or accelerate construction. The program, while expensive, was highly cost effective considering reduced bridge construction and long-term maintenance costs.
Near-Real-Time Embankment Settlement Monitoring for Construction Control
Budge, Aaron S. (Autor:in) / Dasenbrock, Derrick D. (Autor:in) / Mattison, Dan J. (Autor:in)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 1439-1442
25.02.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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