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bridges were used, the maximum horizontal displacement of the faceplate was
4.3mm and the settlement strain of reinforced earth was about 0.5%.
4.3.3 Effectiveness
The 16 abutments were constructed by geotextile reinforced earth, and in all
about 0.2 million Chinese yuan was saved compared with the gravity retaining
wall. The reinforced earth abutment has the following advantages:
1. Convenient construction and time savings
2. Adequacy to subsoil with low bearing capacity
3. No need for a road concert plate spanned on the concrete block and
road embankment, because their settlements are same (Yang Canwen
et al., 1990; Luo Baochen and Yu Xijian, 1992)
4.4 A Highway Bridge with Reinforced Earth Pier and
Abutment
The bridge is on an arterial highway of Guilingyang Economy Developing zone
in Hainan Province. The width of the pavement is 36 m, and the width of
canal under the bridge is 22m (Fig. 15). From geological prospecting, above
7
2
3.0m is silt clay and sludge, and under 7
2
3.0 m until 7
2
9.0 m is silt
Figure 15
Transverse section of the highway bridge. 1. Nonwoven geotextile-bag sand
drains; 2. coarse sand; 3. nonwoven geotextile; 4. crushed stones; 5. reinforced earth
mattress (vertical space of woven geotextile: 300mm); 6. reinforced-earth pier (space:
220mm); 7. reinforced earth abutment (space: 220mm); 8. cap of pier or abutments; 9.
beams; 10. slabs.
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