지진격리 강재 케이블 교량의 다지점 진동대 실험
(주)코리아스칼라
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- 2016.04.02
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- 2015.06
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서지정보
ㆍ발행기관 : 한국지진공학회
ㆍ수록지정보 : Jorunal of the Earthquake Engineering Society of Korea / 19권 / 4호
ㆍ저자명 : 김성도, 안진희, 공영이, 최형석, 정진환
목차
1. Introduction
2. Seismic test conditions
2.1 Multiple-support shaking table system
2.2 Cable-stayed bridge model
2.2 Cable-stayed bridge model
2.3 Seismic test program
2.4 Instrumentation of a test cable-stayed bridge
3. Seismic test results
3.1 Multiple shaking table responses
3.2 Natural frequency of the cable-stayed bridge
3.3 Dynamic responses of the bridge
4. Conclusions
/ ACKNOWLEDGMENT /
/ REFERENCES /
영어 초록
A series of tests was conducted for full-scale single-pylon asymmetric cable-stayed bridges using a system of multiple shaking tables. The 2-span bridge length was 28 m, and the pylon height was 10.2 m. 4 different base conditions were considered: the fixed condition, RB (rubber bearings), LRB (lead rubber bearings), and HDRB (high damping rubber bearings). Based on investigation of the seismic response, the accelerations and displacements in the axial direction of the isolated bridge were increased compared to non-isolated case. However, the strain of the pylon was decreased, because the major mode of the structure was changed to translation for the axial direction due to the dynamic mass. The response of the cable bridge could differ from the desired response according to the locations and characteristics of the seismic isolator. Therefore, caution is required in the design and prediction in regard to the location and behavior of the seismic isolator.
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