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A platform for research: civil engineering, architecture and urbanism
Application of Shaft Grouting Technique in Deep Foundations - Hong Kong Experience
Post-construction shaft grouting is a relatively new construction technique to enhance the capacity of the replacement piles generated from alluvial deposits as well as completely decomposed soils in Hong Kong. Its application in small replacement piles was recorded in early 90s whilst its application in large diameter replacement piles had only started in late 1990s. Through instrumented full-scale trial pile tests with a maximum test load of 45 MN, it has been demonstrated that the frictional capacity of the piles using shaft grouting technique can be enhanced by 2 to 3 times of the values attained by the plain replacement piles. This Paper gives an overview of the development of such technique in deep foundations and recent project experiences in Hong Kong. The common correlation factors of design parameters will be discussed. Quality control during the construction process which is essential to the successful application of such technique will also be highlighted. Selected case histories will be presented to illustrate the enhanced friction capacity of piles comparing to the historical data of the plain friction piles recorded in the local industry.
Application of Shaft Grouting Technique in Deep Foundations - Hong Kong Experience
Post-construction shaft grouting is a relatively new construction technique to enhance the capacity of the replacement piles generated from alluvial deposits as well as completely decomposed soils in Hong Kong. Its application in small replacement piles was recorded in early 90s whilst its application in large diameter replacement piles had only started in late 1990s. Through instrumented full-scale trial pile tests with a maximum test load of 45 MN, it has been demonstrated that the frictional capacity of the piles using shaft grouting technique can be enhanced by 2 to 3 times of the values attained by the plain replacement piles. This Paper gives an overview of the development of such technique in deep foundations and recent project experiences in Hong Kong. The common correlation factors of design parameters will be discussed. Quality control during the construction process which is essential to the successful application of such technique will also be highlighted. Selected case histories will be presented to illustrate the enhanced friction capacity of piles comparing to the historical data of the plain friction piles recorded in the local industry.
Application of Shaft Grouting Technique in Deep Foundations - Hong Kong Experience
Sze, James W. C. (author) / Chan, K. M. (author)
Proceedings of the Fourth International Conference on Grouting and Deep Mixing ; 2012 ; New Orleans, Louisiana, United States
Grouting and Deep Mixing 2012 ; 1085-1094
2012-08-17
Conference paper
Electronic Resource
English
Grouting , Highways and roads , Chemical grouting , Anchors , Cement , Deep foundations , Cutoffs , Piles , Mixing , Shafts , Hong Kong , Friction , Foundations , Hydraulic structures
Application of Shaft Grouting Technique in Deep Foundations-Hong Kong Experience
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