Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Load Capacity of Foundations on Rock
This paper brings together the results of nearly 20 full-scale load tests on large diameter bored piles and barrettes carried out in Hong Kong over the last 10 years. The paper primarily draws on the results of a US$12million program of 14 full-scale pile tests carried out for the Kowloon-Canton Railway Corporation for the 30km West Rail Project Phase I. The solid geology included eight rock types ranging from igneous and volcanic to metasedimentary in varying degrees of weathering. The piles were tested to confirm that both rock socket and end bearing could be combined and where possible to demonstrate the ultimate capacity of each component. Test loads were applied using combinations of 30MN of kentledge and single 30MN Osterberg Load Cells. The results confirmed that, when compared with the Presumptive Allowable Bearing values given in the Hong Kong Building Regulations of 3 to 7.5MPa, a two to three fold increase could be achieved as well a concomitant increase in socket friction. The results have been used in conjunction with the other tests in Hong Kong as well as published elsewhere to provide design relationships based on unconfined compressive strength and point load test data. Some contractors have used the results in successful design and construct foundation schemes for the project.
Load Capacity of Foundations on Rock
This paper brings together the results of nearly 20 full-scale load tests on large diameter bored piles and barrettes carried out in Hong Kong over the last 10 years. The paper primarily draws on the results of a US$12million program of 14 full-scale pile tests carried out for the Kowloon-Canton Railway Corporation for the 30km West Rail Project Phase I. The solid geology included eight rock types ranging from igneous and volcanic to metasedimentary in varying degrees of weathering. The piles were tested to confirm that both rock socket and end bearing could be combined and where possible to demonstrate the ultimate capacity of each component. Test loads were applied using combinations of 30MN of kentledge and single 30MN Osterberg Load Cells. The results confirmed that, when compared with the Presumptive Allowable Bearing values given in the Hong Kong Building Regulations of 3 to 7.5MPa, a two to three fold increase could be achieved as well a concomitant increase in socket friction. The results have been used in conjunction with the other tests in Hong Kong as well as published elsewhere to provide design relationships based on unconfined compressive strength and point load test data. Some contractors have used the results in successful design and construct foundation schemes for the project.
Load Capacity of Foundations on Rock
Littlechild, Brian D. (Autor:in) / Hill, Stephen J. (Autor:in) / Plumbridge, Glen D. (Autor:in) / Lee, Soon C. (Autor:in)
Geo-Denver 2000 ; 2000 ; Denver, Colorado, United States
17.07.2000
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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