江西理工大学学报
江西理工大學學報
강서리공대학학보
Journal of Jiangxi University of Science and Technology
2015年
5期
49-54
,共6页
桥梁工程%隔震%反应谱法%非线性动力时程分析法%变形%橡胶隔震支座
橋樑工程%隔震%反應譜法%非線性動力時程分析法%變形%橡膠隔震支座
교량공정%격진%반응보법%비선성동력시정분석법%변형%상효격진지좌
bridge engineering%isolation%response spectrum method%the nonlinear dynamic time history analysis method%deformation%the rubber isolation bearing
通过对欧洲、美国和日本三国隔震设计方法的总结与归纳,选用两阶段水准反应谱分析方法,并采用非线性动力时程分析法进行结果校核,对实例公路桥梁进行了隔震设计与校核. 计算结果表明:在低水准地震作用下,桥墩截面按最小配筋率设计即可;在高水准地震作用下,桥墩已进入屈服阶段,屈服后采用非线性动力时程分析法校核,桥梁隔震能力满足设计要求,桥台、桥墩处的变形能力、结构周期、隔震能力显著提高,是地震频发地区桥梁设计的重要保障措施.
通過對歐洲、美國和日本三國隔震設計方法的總結與歸納,選用兩階段水準反應譜分析方法,併採用非線性動力時程分析法進行結果校覈,對實例公路橋樑進行瞭隔震設計與校覈. 計算結果錶明:在低水準地震作用下,橋墩截麵按最小配觔率設計即可;在高水準地震作用下,橋墩已進入屈服階段,屈服後採用非線性動力時程分析法校覈,橋樑隔震能力滿足設計要求,橋檯、橋墩處的變形能力、結構週期、隔震能力顯著提高,是地震頻髮地區橋樑設計的重要保障措施.
통과대구주、미국화일본삼국격진설계방법적총결여귀납,선용량계단수준반응보분석방법,병채용비선성동력시정분석법진행결과교핵,대실례공로교량진행료격진설계여교핵. 계산결과표명:재저수준지진작용하,교돈절면안최소배근솔설계즉가;재고수준지진작용하,교돈이진입굴복계단,굴복후채용비선성동력시정분석법교핵,교량격진능력만족설계요구,교태、교돈처적변형능력、결구주기、격진능력현저제고,시지진빈발지구교량설계적중요보장조시.
Through the summary of the isolation design methods in Europe, America and Japan, this study chooses two-stage standard response spectrum analysis method, uses the nonlinear dynamic time history to check the results, and designs and checks the actual highway bridge isolation. The results show that: in the low level of seismic action, the pier cross-section can be designed according to the minimum reinforcement ratio;In the high level of seismic action, the pier has entered a stage of yield, and after yield, with the method of nonlinear dynamic time history analysis, the bridge isolation ability can be checked to meet the design requirements. The deformation ability of abutment and pier, the periodic of structure, and capacity for isolation are greatly enhanced. The proposed method is an important safeguard of seismically active area of bridge design.
