A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Load Transfer Mechanism of Micropiles in Weathered Rock
The load transfer mechanism of micropiles was examined for a bridge during construction in the Foothills Parkway of the Great Smoky Mountains in Tennessee. The bridge is supported on four piers and each rests on a circular pile cap with 20 micropiles socketed into rock with varying depths. The ground is characterized by 4 to 50-ft of sand and gravel overlying metaconglomerate and metasandstone rock. The load transfer of the piers was monitored using strain gages installed along the micropiles cased and bond zones, as well as in the pile cap. In addition, a 3D numerical model was developed using ABAQUS to understand the behavior. Using the collected data from the instrumentation and the numerical simulations, it was found that the weathered rock in the cased zone of the micropiles transfers a significant load (>70% of the total load) despite the small friction at the interface.
Load Transfer Mechanism of Micropiles in Weathered Rock
The load transfer mechanism of micropiles was examined for a bridge during construction in the Foothills Parkway of the Great Smoky Mountains in Tennessee. The bridge is supported on four piers and each rests on a circular pile cap with 20 micropiles socketed into rock with varying depths. The ground is characterized by 4 to 50-ft of sand and gravel overlying metaconglomerate and metasandstone rock. The load transfer of the piers was monitored using strain gages installed along the micropiles cased and bond zones, as well as in the pile cap. In addition, a 3D numerical model was developed using ABAQUS to understand the behavior. Using the collected data from the instrumentation and the numerical simulations, it was found that the weathered rock in the cased zone of the micropiles transfers a significant load (>70% of the total load) despite the small friction at the interface.
Load Transfer Mechanism of Micropiles in Weathered Rock
Theinat, Audai K. (author) / Luna, Ronaldo (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 55-62
2019-03-21
Conference paper
Electronic Resource
English
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