| Autor: |
Tin-Mei Lin, Ting-Ling Tseng, Hsii-Sheng Hsieh, Kun-Ruey Wang |
| Předmět: |
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| Zdroj: |
Journal of GeoEngineering; Mar2022, Vol. 17 Issue 1, p47-57, 11p |
| Abstrakt: |
Hand-dug caissons are often used in Taichung City to serve as a structural element to counter the buoyance induced by ground water for high-rise buildings with multi-level basement. The subsurface of Taichung City consists predominately of very dense sandy gravel that cannot be sampled for routine laboratory tests, thus impeding the use of empirical equations to estimate the capacities of caissons for lack of strength or index parameters of gravels. This paper presented the pile loading test result of a well-instrumented hand-dug caisson to shed a light on the uplift behavior of caisson within Taichung gravel. It is found that ultimate side friction of this caisson is about 25% higher than the maximum values stipulated in local design code, and the mobilized side friction is likely a function of the overburden pressure. Using the β-method as a basis, the ratio of ultimate skin friction to the overburden pressure of this test is calibrated against the published average curve. The calibrated curve was found shifting to the right of the original curve, indicating that Taichung gravel is perhaps more capable of providing a higher uplift capacity than average gravels. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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