A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of High Geosynthetic-reinforced Embankments
An expressway section was constructed between two tunnels crossing a valley in a mountainous area in China. The original design was a bridge founded on cast-in-place piles and was replaced by a high and steep geosynthetic-reinforced embankment with heights varying from 5 to 49 m. The construction of this embankment was challenging. A series of stability analyses including numerical modeling were carried out and led to a combined design, which consisted of a wrapped-around geogrid face, concrete masonry supporting piers as stable foundation bases, anchor bolts to enhance anchoring force, and a drainage system to discharge upstream water. Typical cross-sections of the embankment were monitored and the results proved the effectiveness of the adopted design solution. The measured deformation of the reinforced embankment was relatively small; however obvious differential settlement was observed between the backfill and the rock mass, especially at the excavation terrace edge. This differential settlement caused the abrupt change of the tension in the geogrid.
Performance of High Geosynthetic-reinforced Embankments
An expressway section was constructed between two tunnels crossing a valley in a mountainous area in China. The original design was a bridge founded on cast-in-place piles and was replaced by a high and steep geosynthetic-reinforced embankment with heights varying from 5 to 49 m. The construction of this embankment was challenging. A series of stability analyses including numerical modeling were carried out and led to a combined design, which consisted of a wrapped-around geogrid face, concrete masonry supporting piers as stable foundation bases, anchor bolts to enhance anchoring force, and a drainage system to discharge upstream water. Typical cross-sections of the embankment were monitored and the results proved the effectiveness of the adopted design solution. The measured deformation of the reinforced embankment was relatively small; however obvious differential settlement was observed between the backfill and the rock mass, especially at the excavation terrace edge. This differential settlement caused the abrupt change of the tension in the geogrid.
Performance of High Geosynthetic-reinforced Embankments
Xu, Chao (author) / Lou, Yu-Shan (author) / Zhu, Hong (author) / Wang, Jin (author) / Yang, Fan (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 515-518
2013-02-25
Conference paper
Electronic Resource
English
Performance of High Geosynthetic-Reinforced Embankments
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