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Settlement Behind Bridge Abutments. The Performance of a Uniformly-Graded Sand Fill in an Approach Embankment on the M4 Motorway
The Report describes an investigation which is one of a series to determine whether it is necessary to place restrictions on the types of fill material to be used in constructing approach embankments behind bridge abutments. In this investigation the use of a uniformly-graded fine to medium sand was examined and compared with the performance of a well-graded sandy gravel. Measurements were made of the state of compaction of the fill materials and records obtained of the settlements of the road surface and the subsoil. After four years the settlements within both the 7 m high sand and gravel fills were negligible (of the same order as the accuracy of measurement). However settlements of up to 40 mm were recorded in the subsoil beneath the fill materials due to consolidation of the underlying clay. (Author)
Settlement Behind Bridge Abutments. The Performance of a Uniformly-Graded Sand Fill in an Approach Embankment on the M4 Motorway
The Report describes an investigation which is one of a series to determine whether it is necessary to place restrictions on the types of fill material to be used in constructing approach embankments behind bridge abutments. In this investigation the use of a uniformly-graded fine to medium sand was examined and compared with the performance of a well-graded sandy gravel. Measurements were made of the state of compaction of the fill materials and records obtained of the settlements of the road surface and the subsoil. After four years the settlements within both the 7 m high sand and gravel fills were negligible (of the same order as the accuracy of measurement). However settlements of up to 40 mm were recorded in the subsoil beneath the fill materials due to consolidation of the underlying clay. (Author)
Settlement Behind Bridge Abutments. The Performance of a Uniformly-Graded Sand Fill in an Approach Embankment on the M4 Motorway
J. E. Cross (Autor:in)
1970
20 pages
Report
Keine Angabe
Englisch