Post-Earthquake Investigation of Several Geosynthetic Reinforced Soil Retaining Walls and Slopes During Ji-Ji Earthquake of Taiwan - Reinforced Soil Engineering: Advances in Research and Practice - page 302

A close view of the slope is shown in Fig. 11d, where the reinforcements are seen
to pull out of the slope. Note that the concrete pavement around the site, at the
foot and crest of the slope, deformed excessively (Fig. 11e).
It is, however, not certain if the failure of this reinforced structure was
attributed to the seismic excitation alone. Excessive deformation of this
reinforced slope was reported previously following an excavation at the foot of
the slope in 1994 (Chou, 2000). The original configuration of this reinforced
slope and the configuration after failure in 1994 are shown in Fig. 12 (Huang,
2000).
5.2 Nai Lu Housing Development Site, Chung Hsin New
Village
A 35-m-high reinforced structure, located near Chung Hsin New Village,
remained stable after the earthquake. The structure was composed of six multiple
reinforced slopes, facing south-west. The slope has a wraparound facing and was
fully vegetated (Fig. 13a) . The details of this reinforced slope were given by
Chou et al. (1994). It was the tallest reinforced soil structure at the time of
completion of construction. Note that the road pavement along the slope suffered
significant damage (Fig. 13b).
Figure 14 shows the configuration of this structure. The slope was
constructed on a V-shaped valley having an inclination of 2(V):1(H) backfilled
Figure 12 Configuration of Chi-Nan University before and failure of 1994. (After
Huang 2000.)