Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)
- Volume 1 Issue 2
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- Pages.115-122
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- 1997
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- 2234-6937(pISSN)
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- 2287-6979(eISSN)
An Impact Test for investigating the Dynamic Characteristics of Actual Bridge Foundation
교량기초의 동적특성 파악을 위한 충격실험
- Received : 1997.08.26
- Published : 1997.09.30
Abstract
Although most bridge foundations are usually constructed by Caisson, terrain difficulties sometimes bring about constructing bridge foundations by Jacket piles. This study investigated the dynamic characteristics of Caisson and Jacket by testing the impact applied to actual bridge foundations. The test result showed that the damping ratio of the foundation constructed by Jacket and Caisson were measured 1-2% and 3-6%, respectively. Considering the lateral deflection measured by the impact test, the rigidity of foundations constructed by Jacket was assessed about 1/5 - 1/6 of those constructed by Caisson. It implies that designing bridge foundations should include and reflect the dynamic analysis of bridge foundation.