南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2009年
6期
59-61,72
,共4页
夏富洲%宋一乐%李静%姚雄
夏富洲%宋一樂%李靜%姚雄
하부주%송일악%리정%요웅
大型渡槽%减震支座%自振周期
大型渡槽%減震支座%自振週期
대형도조%감진지좌%자진주기
large-scale aqueduct%vibration absorption bearing%natural period of vibration
为解决南水北调大型渡槽工程中的抗震问题,进行了模拟地震振动台试验研究,分析了减震支座水平刚度、槽内水体及场地对渡槽结构动力特性的影响.研究结果表明,减震支座的水平刚度越小、槽内水体质量越大,渡槽结构自振周期越长,从而达到减震效果,提高渡槽的抗震能力.此外,场地对减震效果影响显著.
為解決南水北調大型渡槽工程中的抗震問題,進行瞭模擬地震振動檯試驗研究,分析瞭減震支座水平剛度、槽內水體及場地對渡槽結構動力特性的影響.研究結果錶明,減震支座的水平剛度越小、槽內水體質量越大,渡槽結構自振週期越長,從而達到減震效果,提高渡槽的抗震能力.此外,場地對減震效果影響顯著.
위해결남수북조대형도조공정중적항진문제,진행료모의지진진동태시험연구,분석료감진지좌수평강도、조내수체급장지대도조결구동력특성적영향.연구결과표명,감진지좌적수평강도월소、조내수체질량월대,도조결구자진주기월장,종이체도감진효과,제고도조적항진능력.차외,장지대감진효과영향현저.
In order to resolve the vibration problems of large-scale aqueduct in South-to-North Water Transfer Project, shaking table model tests of simulating earthquake action have been done, and the effects of horizon rigidity of vibration absorption bearing; waters in the flumes and field on aqueduct dynamic characteristics have been analyzed. The results indicate that the smaller horizon rigidity of vibration absorption bearing is; the bigger mass of waters in the flumes is, the longer natural period of vibration of aqueduct is. And so the effect of vibration absorption is got, and the vibration-resistant performance of aqueduct can be improved. In addition, the field has remarkable influence on the effect of vibration ab-sorption.
