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Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)

Baosong Ma
Baosong Ma
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Segmental retaining wall (SRWs) (primarily with precast concrete blocks facing) reinforced by geogrids or geotextiles were in a period of enormous growth. A vertical model retaining wall, 3m high and 5m long, was constructed by reinforcing the backfill with two sides' vertical anchored blocks. The cohesionless earth backfill, available at the site of construction, was reinforced by metallic bars reinforcement that were attached to the wall face blocks. The reinforcing layers were instrumented with strain gauges, tensile geogrid load transducers and horizontal displacement sensors. In addition, total soil pressure transducers were installed inside the structure to monitor the internal state of stress of the reinforced wall. The aim of the research was to better understand the behavior of reinforced structures of two sides' vertical anchored block backfill reinforced retaining wall. In particular, the development of slip surfaces and the tensile forces acting in the reinforcements were investigated. By this analysis it was possible to assess current design approaches and related safety factors in terms of long-term tensile failure, pull out, direct sliding or compound failures. And then use this theory to design and construct a real high road dyke for national defenses highway from Yuanan to Dangyang in China.

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