公路工程
公路工程
공로공정
JOURNAL OF HIGHWAY ENGINEERING
2014年
2期
135-138
,共4页
桥梁%高墩%稳定性%合理截面%位移判断条件
橋樑%高墩%穩定性%閤理截麵%位移判斷條件
교량%고돈%은정성%합리절면%위이판단조건
bridge%high pier%stability%reasonable cross-section%determination conditions of displacement
探讨通过位移条件判断高墩的稳定性,以此丰富现有的判断条件。基于理论推导求得矩形截面(包括双薄壁)桥墩在风荷载及自重作用下的位移函数,发现双薄壁墩合理截面的内在关系,并通过有限元计算及与实际双薄壁墩截面的对比验证其正确性。通过理论推导提出了高墩稳定性的位移判断条件,此方法简单,方便,准确度较高。
探討通過位移條件判斷高墩的穩定性,以此豐富現有的判斷條件。基于理論推導求得矩形截麵(包括雙薄壁)橋墩在風荷載及自重作用下的位移函數,髮現雙薄壁墩閤理截麵的內在關繫,併通過有限元計算及與實際雙薄壁墩截麵的對比驗證其正確性。通過理論推導提齣瞭高墩穩定性的位移判斷條件,此方法簡單,方便,準確度較高。
탐토통과위이조건판단고돈적은정성,이차봉부현유적판단조건。기우이론추도구득구형절면(포괄쌍박벽)교돈재풍하재급자중작용하적위이함수,발현쌍박벽돈합리절면적내재관계,병통과유한원계산급여실제쌍박벽돈절면적대비험증기정학성。통과이론추도제출료고돈은정성적위이판단조건,차방법간단,방편,준학도교고。
Currently stability of tall piers primarily be judged through eigenvalue analysis,and the stability judged by the displacement conditions will be explored through the article,enriching existing judgment conditions.Displacement function of the pier is obtained which based on the theoretical deriva-tion of rectangular cross section (including dual thin-walled)under its own weight and wind loads,and found the intrinsic relationship of a reasonable cross-section of the double thin pier,and the finite ele-ment calculation and the actual Double Thin-walled pier contrast verifies its correctness.A displacement-determined condition of high pier stability is put forward through theoretical derivation,and the method is simple,convenient and high accuracy.