CAJ | 학술논문

由于缺少动力特性资料及实际运用经验,我国渡槽抗震设计无可遵循,因此,研究大型渡槽的减隔震问题,具有十分重要的现实意义.针对南水北调工程中某渡槽结构,利用双线性模型对铅芯橡胶隔震支座的非线性滞回恢复力曲线进行模拟,以有限域内附加质量法考虑水体对渡槽槽身的动力作用,进行了不同支座结构地震反应的比较分析.结果表明隔震支座可以有效降低结构的地震响应,提高结构的抗震能力,成果可为渡槽的隔震设计提供参考.
유우결소동력특성자료급실제운용경험,아국도조항진설계무가준순,인차,연구대형도조적감격진문제,구유십분중요적현실의의.침대남수북조공정중모도조결구,이용쌍선성모형대연심상효격진지좌적비선성체회회복력곡선진행모의,이유한역내부가질량법고필수체대도조조신적동력작용,진행료불동지좌결구지진반응적비교분석.결과표명격진지좌가이유효강저결구적지진향응,제고결구적항진능력,성과가위도조적격진설계제공삼고.
Owing to the lack of dynamic property information and experience in practical application, seismic design of aqueduct has no standard to follow in our country. Study on the seismic mitigation and isolation of large aqueduct is of great practical significance. In accordance with some aqueduct in South to North Water Transfer Project, this paper simulates nonlinear hysteretic restoring force curve of isolation bearing of the lead core rubber aqueduct by bilinear model, compares and analyzes the earthquake response considering the interaction of the aqueduct bridge and the water-body in the aqueduct. The results show that the isolation bearing can reduce the structure' s response to the earthquake and improve the ability of anti-seismic structure.