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A platform for research: civil engineering, architecture and urbanism
Field performance and pullout tests of geosynthetics reinforced soil slope using residual soil in Singapore
A geosynthetics reinforced soil slope was built for the repairing of a failed slope at Bukit Batok district in Singapore. This slope is adjacent to a proposed high-rise housing development. The implication of further slope failure, if any, is very serious in this case. Efforts were also made to maintain the environmental friendliness of the slope such that it will then blend well with the natural park nearby as well as providing a 'green' environment for the residents. Thus, the proposed solution consists of a series of 3-tier slope of IV:3H with geotextile reinforcement. The maximum height of the slope is about 21.5 m and in-situ poorly draining residual soil is used as the backfill material as free draining importing sand as fill material is too costly. Layers of high strength composite geotextile with high in-plane permeability are then needed as not only reinforcement function but also drainage function has to be provided in such a poorly draining soil. Extensive instruments were installed to monitor not only the construction stage but also the long term performance of the repaired slope. In addition, the actual in-situ interface properties between the geosynthetics and the backfill soil were evaluated by performing field pullout tests. This paper will focus on the field performance of the slope during the 2 years after construction. The soil-geosynthetics interaction of geotextile and geogrid in residual backfill soil was investigated using a series of field pullout tests.
Field performance and pullout tests of geosynthetics reinforced soil slope using residual soil in Singapore
A geosynthetics reinforced soil slope was built for the repairing of a failed slope at Bukit Batok district in Singapore. This slope is adjacent to a proposed high-rise housing development. The implication of further slope failure, if any, is very serious in this case. Efforts were also made to maintain the environmental friendliness of the slope such that it will then blend well with the natural park nearby as well as providing a 'green' environment for the residents. Thus, the proposed solution consists of a series of 3-tier slope of IV:3H with geotextile reinforcement. The maximum height of the slope is about 21.5 m and in-situ poorly draining residual soil is used as the backfill material as free draining importing sand as fill material is too costly. Layers of high strength composite geotextile with high in-plane permeability are then needed as not only reinforcement function but also drainage function has to be provided in such a poorly draining soil. Extensive instruments were installed to monitor not only the construction stage but also the long term performance of the repaired slope. In addition, the actual in-situ interface properties between the geosynthetics and the backfill soil were evaluated by performing field pullout tests. This paper will focus on the field performance of the slope during the 2 years after construction. The soil-geosynthetics interaction of geotextile and geogrid in residual backfill soil was investigated using a series of field pullout tests.
Field performance and pullout tests of geosynthetics reinforced soil slope using residual soil in Singapore
Stabilitätsuntersuchungen und Ausziehversuche an einer mit geosynthetischen Werkstoffen verstärkten Erdböschung unter Verwendung von restlichem Erdboden in Singapur
Lim, H.T. (author) / Chew, S.H. (author) / Karunaratne, G.P. (author) / He, Z.W. (author) / Ho, C.T. (author) / Toh, C.K. (author) / Koh, H.L. (author) / Khoo, T.K. (author) / Chua, K.C. (author)
2006
4 Seiten, 6 Bilder, 1 Tabelle, 3 Quellen
Conference paper
Storage medium
English
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