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Design loads and partial safety factors for geogrids in soil reinforcement
In this paper, various considerations in the determination of design loads and partial safety factors for geogrids in soil reinforcement are described. Factors considered include the phenomena of stress rupture, creep, hydrolysis, weathering, mechanical damage, chemical and microbiological attack which would lead to degradation of the reinforcement in the long term. These are affected by environmental conditions, of which temperature, humidity, pH and mechanical aggressiveness of the fill used are key factors. The situations particular to Hong Kong are highlighted in these considerations. A brief account of the control system for the use of these products in Hong Kong is then presented. Requirements for design conditions in Hong Kong include a service life of 120 years and a service temperature of 35 degrees C. Manufacturers of proprietary products to be used in permanent reinforced fill structures in Hong Kong are required to submit data on their products to the Geotechnical Engineering Office of the Hong Kong government for certification. Furthermore, the manufacture of the reinforcement products must include a quality assurance system equivalent to ISO 9002.
Design loads and partial safety factors for geogrids in soil reinforcement
In this paper, various considerations in the determination of design loads and partial safety factors for geogrids in soil reinforcement are described. Factors considered include the phenomena of stress rupture, creep, hydrolysis, weathering, mechanical damage, chemical and microbiological attack which would lead to degradation of the reinforcement in the long term. These are affected by environmental conditions, of which temperature, humidity, pH and mechanical aggressiveness of the fill used are key factors. The situations particular to Hong Kong are highlighted in these considerations. A brief account of the control system for the use of these products in Hong Kong is then presented. Requirements for design conditions in Hong Kong include a service life of 120 years and a service temperature of 35 degrees C. Manufacturers of proprietary products to be used in permanent reinforced fill structures in Hong Kong are required to submit data on their products to the Geotechnical Engineering Office of the Hong Kong government for certification. Furthermore, the manufacture of the reinforcement products must include a quality assurance system equivalent to ISO 9002.
Design loads and partial safety factors for geogrids in soil reinforcement
Berechnungsgrundlagen und partielle Sicherheitsfaktoren für Geogitter zur Bodenverstärkung
Greenwood, J.H. (author) / Shen, J.M. (author)
1994
6 Seiten, 1 Bild, 14 Quellen
Conference paper
English
Geotextil , Bodenverfestigung , Sicherheitsfaktor , mechanische Verstärkung , Hongkong , chemische Beständigkeit , mikrobiologischer Abbau , mechanische Beschädigung , Hydrolyse , Bewetterung (Bewetterungsprüfung) , Zugbeanspruchung , Norm , Kriechen (Werkstoff) , Extrapolation , Polyethylen hoher Dichte , Polyester , Polyolefin , Geogitter
Design Loads and Partial Safety Factors for Geogrids in Soil Reinforcement
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